A testing fixture for automotive door lock sensors

Abstract

This utility model relates to the field of door lock sensor technology and discloses a testing fixture for automotive door lock sensors, including a worktable. Hydraulic push rods are fixedly connected to the four corners of the top of the worktable. After the testing mechanism rises to a certain height, the lifting assembly releases the testing mechanism, allowing the impact frame to test the impact on the product placed on the platform. To improve the impact effect, a counterweight needs to be added inside the impact frame. When the testing mechanism rises to a certain height under the drive of the lifting assembly, the telescopic end of the second electric push rod will drive the counterweight frame to rise and fall. Since the other end of the counterweight frame is limited by the rotating bracket, the counterweight frame moves in an arc shape. Then, the telescopic end of the second bidirectional electric push rod drives the two blocking bars to move away from each other, and the tilted counterweight frame can discharge the counterweight block from the inside and enter the interior of the impact frame to complete the counterweighting.

Description

Technical Field

[0001] This utility model relates to the field of door lock sensor technology, specifically to a testing fixture for automotive door lock sensors. Background Technology

[0002] With the rapid development of the automotive industry, the safety of automobiles has become increasingly important. As a key component for ensuring the safety of people and property inside the vehicle, the reliability of the car door lock is of paramount importance. As an important part of the door lock system, the car door lock sensor can monitor the status of the door lock in real time, such as whether it is closed properly or whether it has been subjected to abnormal impact, and feed this information back to the vehicle's control system so that appropriate safety measures can be taken in a timely manner.

[0003] In actual vehicle use, car door lock sensors are subjected to various impacts, such as collisions and forceful door slamming. Therefore, impact testing is a crucial step in ensuring product quality. Currently, impact testing technology for car door lock sensors has certain shortcomings. The impact testing intensity for most door lock sensors is relatively fixed, lacking the ability to adjust the impact intensity counterweight in real time. During the testing process, different models and specifications of door lock sensors have different impact tolerance capabilities, and a fixed impact intensity cannot meet diverse testing needs. This results in a lack of comprehensiveness and specificity in the test results, making it difficult to accurately assess the ability of various sensors to cope with different impact scenarios in actual use. Therefore, those skilled in the art provide a testing fixture for car door lock sensors to solve the problems mentioned in the background. Utility Model Content

[0004] The purpose of this invention is to provide a testing fixture for automotive door lock sensors, thereby solving the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a testing fixture for an automotive door lock sensor, including a workbench, with hydraulic push rods fixedly connected to the four corners of the top of the workbench, and the telescopic ends of the four hydraulic push rods being fixedly connected to a top plate. A testing mechanism for impact testing of the product is provided below the top plate, a lifting assembly for driving the testing mechanism to move up and down is provided at the top of the top plate, a counterweight assembly for increasing the counterweight of the testing mechanism is provided at the bottom of the top plate, a placement platform for placing the product to be impacted is fixedly connected at the center of the top of the workbench, and protective mechanisms for preventing product debris from splashing are provided on both sides of the placement platform at the top of the workbench.

[0006] Preferably, the testing mechanism includes an impact frame, a sleeve is fixedly connected to the upper top end of the impact frame, and sleeves are fixedly connected to both sides of the upper top end of the impact frame located on the sleeve. Two guide blocks are symmetrically fixedly connected to the upper top end of the impact frame, and two guide frames are symmetrically fixedly connected to the lower bottom end of the top plate. The impact frame is slidably sleeved with the guide frames through the guide blocks.

[0007] Preferably, the lifting assembly includes a drive motor fixedly connected to the top of the top plate, a drive rod fixedly connected to the output end of the drive motor, two sets of guide grooves symmetrically arranged in a ring on the outer wall of the drive rod, a bearing bracket fixedly connected to the top of the top plate, the drive rod being rotatably sleeved with the bearing bracket via a bearing, two cable brackets rotatably sleeved on the outer wall of the drive rod, cable bodies being wound around the outer walls of both cable brackets, and hooks fixedly connected to the extension ends of the cable bodies, the hooks being sleeved inside the brackets.

[0008] Preferably, a first chuck is fixedly connected to each of the two cable trays on opposite sides. A second chuck is slidably sleeved on the outer wall of the drive rod at the position of the two sets of guide grooves. Each second chuck engages with the first chuck for transmission. Side ears are symmetrically fixedly connected to the outer wall of the second chuck. Two fixed brackets are symmetrically fixedly connected to the top of the top plate on both sides of the drive rod. A first bidirectional electric push rod is fixedly sleeved inside each pair of fixed brackets. The two telescopic ends of the first bidirectional electric push rod are fixedly connected to the opposite side of the two side ears.

[0009] Preferably, the counterweight assembly includes a counterweight frame, with two rotating brackets symmetrically rotatably sleeved on the outer side wall of the counterweight frame. The ends of the two rotating brackets are fixedly connected to the outer side wall of the top plate. The counterweight frame contains a plurality of counterweight blocks for increasing the counterweight.

[0010] Preferably, two connecting brackets are symmetrically fixedly connected to the bottom end of the top plate. An auxiliary bracket is rotatably sleeved inside each of the two connecting brackets. A second electric push rod is fixedly connected to the bottom end of each of the two auxiliary brackets. The telescopic ends of the two second electric push rods are rotatably sleeved with the outer wall of the counterweight frame. A second bidirectional electric push rod is fixedly connected to the bottom top end of the counterweight frame. A fixing plate is fixedly connected to the two telescopic ends of the second bidirectional electric push rod. A blocking strip is fixedly connected to the top end of each of the two fixing plates, and the blocking strip is slidably sleeved inside the counterweight frame. The end of the blocking strip abuts against the outer wall of the nearest counterweight block.

[0011] Preferably, the protective mechanism includes support frames symmetrically and fixedly connected to the top of the workbench. Each of the two support frames has a first electric push rod fixedly connected inside. The telescopic ends of the two first electric push rods are fixedly connected to arc-shaped protective plates, and the two arc-shaped protective plates are sleeved on the outer wall of the placement table.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention features a lifting assembly that drives a detection mechanism to move up and down. Once the detection mechanism reaches a certain height, the lifting assembly releases it, allowing the impact frame to test the impact strength of a product placed on the platform. To improve the impact effect, a counterweight is added inside the impact frame. When the detection mechanism rises to a certain height under the influence of the lifting assembly, the telescopic end of the second electric push rod drives the counterweight frame to move up and down. Since the other end of the counterweight frame is limited by the rotating bracket, the counterweight frame moves in an arc shape and tilts at an angle. Then, the telescopic end of the second bidirectional electric push rod drives the two blocking bars to move away from each other. The tilted counterweight frame can discharge the counterweight from the inside and enter the impact frame to complete the counterweighting. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a detection fixture for an automotive door lock sensor;

[0015] Figure 2 This is a top view schematic diagram of the overall structure of a detection fixture for an automotive door lock sensor;

[0016] Figure 3 This is a schematic diagram of the worktable structure in a detection fixture for an automotive door lock sensor;

[0017] Figure 4 This is a schematic diagram of the lifting assembly in a detection fixture for an automotive door lock sensor.

[0018] Figure 5 This is a schematic diagram of the counterweight component in a detection fixture for an automotive door lock sensor.

[0019] 1. Workbench; 2. Hydraulic push rod; 3. Top plate; 4. Placement platform; 5. Lifting assembly; 51. Drive motor; 52. Drive rod; 521. Guide groove; 522. Bearing bracket; 53. Cable rack; 54. Cable body; 541. Hook; 55. First chuck; 56. Second chuck; 561. Side lug; 57. Fixed bracket; 58. First bidirectional electric push rod; 6. Protective mechanism; 61. Support frame; 62. First electric push rod; 63. Arc-shaped protective plate; 7. Detection mechanism; 71. Impact frame; 72. Sleeve; 73. Guide block; 74. Guide frame; 75. Sleeve frame; 8. Counterweight assembly; 81. Counterweight frame; 82. Rotating bracket; 83. Counterweight block; 84. Connecting bracket; 85. Second electric push rod; 86. Auxiliary bracket; 87. Second bidirectional electric push rod; 88. Fixed plate; 89. Barrier strip. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please see Figures 1-5 As shown, this utility model provides a technical solution: a testing fixture for an automotive door lock sensor, including a workbench 1. Hydraulic push rods 2 are fixedly connected to the four corners of the top of the workbench 1. The telescopic ends of the four hydraulic push rods 2 are fixedly connected to a top plate 3. A testing mechanism 7 for impact force testing of the product is provided below the top plate 3. A lifting assembly 5 for driving the testing mechanism 7 to move up and down is provided at the top of the top of the top plate 3. A counterweight assembly 8 for increasing the counterweight of the testing mechanism 7 is provided at the bottom of the top of the top of the top of the top of the top of the workbench 1. A placement platform 4 for placing the product to be impacted is fixedly connected to the center of the top of the top of the workbench 1. Protective mechanisms 6 for preventing product debris from splashing are provided on both sides of the placement platform 4 at the top of the top of the workbench 1.

[0022] It should be noted that the testing mechanism 7 is driven by the lifting component 5, which can precisely control the descent speed and force to perform impact force testing on the car door lock sensor, ensuring accurate and reliable test results and providing a strong basis for product quality control. The counterweight component 8 can flexibly increase the counterweight of the testing mechanism 7 according to actual testing requirements, simulating impact conditions under different working conditions, making the testing more realistic and comprehensive, and helping to discover potential product problems. The placement platform 4 is located at the top center of the workbench 1, which is reasonable and facilitates accurate placement of the product to be impacted, improving testing efficiency. The protective mechanisms 6 located on both sides of the placement platform 4 at the top of the workbench 1 can effectively prevent product debris from flying, ensure the safety of operators, and create a safe testing environment.

[0023] As one implementation method in this embodiment, please refer to Figures 1-4As shown, the testing mechanism 7 includes an impact frame 71, a sleeve 72 is fixedly connected to the upper top of the impact frame 71, and sleeves 75 are fixedly connected to both sides of the upper top of the impact frame 71 located on the sleeve 72. Two guide blocks 73 are symmetrically fixedly connected to the upper top of the impact frame 71, and two guide frames 74 are symmetrically fixedly connected to the lower bottom of the top plate 3. The impact frame 71 is slidably sleeved with the guide blocks 73 and the guide frames 74.

[0024] It should be noted that the impact frame 71, as a core component, achieves stable lifting and lowering through sliding connection with the guide frame 74 at the bottom of the top plate 3 and with the help of the guide block 73. This ensures the accuracy and stability of the impact action, effectively reduces shaking and deviation during the testing process, and improves the accuracy of the test results. The sleeves 75 on both sides provide stable support for the installation of other related components or counterweight components 8, and facilitate flexible adjustment of the counterweight according to the testing requirements to simulate impact conditions under different working conditions, making the testing more comprehensive.

[0025] As one implementation method in this embodiment, please refer to Figures 1-4 As shown, the lifting assembly 5 includes a drive motor 51 fixedly connected to the top of the top plate 3. The output end of the drive motor 51 is fixedly connected to a drive rod 52. The outer wall of the drive rod 52 is symmetrically arranged with two sets of guide grooves 521. The top of the top plate 3 is fixedly connected to a bearing bracket 522. The drive rod 52 is rotatably sleeved with the bearing bracket 522 through the bearing. The outer wall of the drive rod 52 is rotatably sleeved with two cable brackets 53. The outer walls of the two cable brackets 53 are wound with cable bodies 54. The extension end of the cable body 54 is fixedly connected with a hook 541. The hook 541 is sleeved inside the sleeve 75.

[0026] It should be noted that the drive motor 51 provides stable power, ensuring that the drive rod 52 can rotate smoothly, laying the foundation for subsequent lifting operations. The bearing bracket 522 supports and positions the drive rod 52 during rotation, ensuring that the drive rod 52 will not deviate during rotation, reducing safety hazards caused by shaking, and extending the service life of the equipment. The two cable brackets 53, together with the cable body 54, achieve the lifting and lowering of the impact frame 71 through the winding and unwinding of the cable. This design is simple in structure, easy to operate, and can quickly respond to lifting needs, improving detection efficiency. The sleeve hook 541 and the sleeve bracket 75 are connected in a way that makes the connection firm and easy to disassemble, facilitating the maintenance and replacement of the detection mechanism 7.

[0027] As one implementation method in this embodiment, please refer to Figure 1 and Figure 4As shown, a first chuck 55 is fixedly connected to the side of each of the two cable trays 53 that are far apart from each other. A second chuck 56 is slidably sleeved on the outer wall of the drive rod 52 at the position of the two sets of guide grooves 521. Each second chuck 56 engages with the first chuck 55 for transmission. Side ears 561 are symmetrically fixedly connected to the outer wall of the second chuck 56. Two fixed brackets 57 are symmetrically fixedly connected to the top of the top plate 3 on both sides of the drive rod 52. A first bidirectional electric push rod 58 is fixedly sleeved inside each pair of fixed brackets 57. The two telescopic ends of the first bidirectional electric push rod 58 are fixedly connected to the opposite side of the two side ears 561 respectively.

[0028] It should be noted that the meshing transmission between the first chuck 55 and the second chuck 56 can precisely control the speed and force of cable retraction and extension, ensuring the smooth lifting and lowering of the impact frame 71, effectively reducing shaking during the testing process, and improving the accuracy of the test results. When it is necessary to adjust the position of the cable frame 53 to adapt to different testing requirements, the first bidirectional electric push rod 58 comes into play. Its telescopic end drives the second chuck 56 to slide along the drive rod 52 through the side lug 561, thereby changing the meshing position with the first chuck 55 and realizing flexible adjustment of the position of the cable frame 53. The design of the side lug 561 facilitates the connection between the first bidirectional electric push rod 58 and the second chuck 56, with a simple structure and a stable connection.

[0029] As one implementation method in this embodiment, please refer to Figure 4 and Figure 5 As shown, the counterweight assembly 8 includes a counterweight frame 81. Two rotating brackets 82 are symmetrically rotatably sleeved on the outer side wall of the counterweight frame 81. The ends of the two rotating brackets 82 are fixedly connected to the outer side wall of the top plate 3. Several counterweight blocks 83 for increasing the counterweight are placed inside the counterweight frame 81. Two connecting brackets 84 are symmetrically fixedly connected to the bottom end of the top plate 3. Auxiliary brackets 86 are rotatably sleeved inside each of the two connecting brackets 84. Second electric push rods 85 are fixedly connected to the bottom end of each of the two auxiliary brackets 86. The telescopic ends of the two second electric push rods 85 are rotatably sleeved on the outer side wall of the counterweight frame 81. A second bidirectional electric push rod 87 is fixedly connected to the top end of the counterweight frame 81. Fixed plates 88 are fixedly connected to the two telescopic ends of the second bidirectional electric push rod 87. A barrier strip 89 is fixedly connected to the top end of each of the two fixed plates 88. The barrier strip 89 is slidably sleeved inside the counterweight frame 81. The end of the barrier strip 89 abuts against the outer wall of the nearest counterweight block 83.

[0030] It should be noted that the counterweight frame 81 is connected to the top plate 3 via the rotating bracket 82 and its angle is adjusted by means of the second electric push rod 85. This allows it to flexibly adapt to the requirements of the counterweight position and angle under different testing scenarios, ensuring that the counterweight is stable and effective during the testing process. Multiple counterweight blocks 83 can be placed inside the counterweight frame 81, which can be used to flexibly increase or decrease the counterweight according to the actual testing requirements, simulating the impact conditions under different working conditions, making the test results more realistic and comprehensive. The second bidirectional electric push rod 87 drives the fixed plate 88 and the barrier strip 89 to move. The barrier strip 89 can limit the counterweight block 83 to prevent it from shifting due to shaking during the testing process, ensuring the stability of the counterweight and thus improving the testing accuracy. The auxiliary bracket 86 provides support for the second electric push rod 85, making the structure of the entire counterweight assembly 8 more stable.

[0031] As one implementation method in this embodiment, please refer to Figures 1-3 As shown, the protective mechanism 6 includes support frames 61 symmetrically fixedly connected to the top of the workbench 1. The interior of each of the two support frames 61 is fixedly connected to a first electric push rod 62. The telescopic ends of the two first electric push rods 62 are fixedly connected to arc-shaped protective plates 63, and the two arc-shaped protective plates 63 are sleeved on the outer wall of the placement platform 4.

[0032] It should be noted that the two support frames 61 provide a stable mounting base for the first electric push rod 62, ensuring that it will not shake during operation and improving the reliability of the entire protective mechanism 6. The setting of the first electric push rod 62 allows the arc-shaped protective plate 63 to move flexibly. Before testing, the arc-shaped protective plate 63 can be quickly fitted onto the outer wall of the placement table 4 through the first electric push rod 62 to form an effective protective barrier, effectively preventing product debris from splashing during testing, ensuring the safety of operators, and reducing the risk of injury caused by debris splashing. After testing, the arc-shaped protective plate 63 can be removed through the first electric push rod 62, making it convenient for operators to pick up and put down products and improving testing efficiency. The design of the arc-shaped protective plate 63 fits the shape of the placement table 4, which can better cover the area around the placement table 4, enhance the protective effect, and reduce blind spots.

[0033] Working principle: When the detection fixture of the car door lock sensor is working, the hydraulic push rod 2 can adjust the height of the top plate 3 to adapt to different detection scenarios. When the detection starts, the lifting component 5 plays a role. The drive motor 51 drives the drive rod 52 to rotate on the bearing frame 522. The cable body 54 is wrapped on the cable frame 53 and connected to the frame 75 of the detection mechanism 7 through the hook 541. The impact frame 71 is driven to rise smoothly to a certain height under the guidance of the guide block 73 and the guide frame 74.

[0034] At this time, the telescopic end of the first bidirectional electric push rod 58 pushes the side ear 561, causing the second chuck 56 to slide along the guide groove 521 of the drive rod 52, changing the engagement state with the first chuck 55, thereby releasing the cable body 54, and the impact frame 71 falls freely to perform impact testing on the car door lock sensor product placed on the placement platform 4. In order to improve the impact effect, it is necessary to add counterweight to the impact frame 71.

[0035] When the testing mechanism 7 rises to a certain height, the telescopic end of the second electric push rod 85 of the counterweight assembly 8 drives the counterweight frame 81 to rise and fall. Because the other end of the counterweight frame 81 is limited by the rotating bracket 82, it moves in an arc shape and tilts at an angle. Subsequently, the telescopic end of the second bidirectional electric push rod 87 drives the blocking strips 89 on the two fixed plates 88 to move away from each other. The tilted counterweight frame 81 discharges the internal counterweight block 83, and the counterweight block 83 enters the impact frame 71 to complete the counterweighting. At the same time, before the test, the protective mechanism 6 pushes the arc-shaped protective plate 63 to fit onto the outer wall of the placement platform 4 through the first electric push rod 62 on the support frame 61 to prevent product debris from flying and ensure the safety of the operators.

[0036] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A detection tool for a door lock sensor of a vehicle, comprising a worktable (1), characterized in that: Hydraulic push rods (2) are fixedly connected to the four corners of the top of the workbench (1). The telescopic ends of the four hydraulic push rods (2) are fixedly connected to the top plate (3). A testing mechanism (7) for impact testing of the product is provided below the top plate (3). A lifting component (5) for driving the testing mechanism (7) to move up and down is provided at the top of the top of the top plate (3). A counterweight component (8) for increasing the counterweight of the testing mechanism (7) is provided at the bottom of the top plate (3). A placement platform (4) for placing the product to be impacted is fixedly connected at the center of the top of the workbench (1). A protective mechanism (6) for preventing product debris from splashing is provided on both sides of the placement platform (4) at the top of the workbench (1).

2. The detection tool of a door lock sensor of an automobile according to claim 1, characterized in that: The testing mechanism (7) includes an impact frame (71), a sleeve (72) is fixedly connected to the upper top of the impact frame (71), and sleeves (75) are fixedly connected to both sides of the upper top of the impact frame (71) located on the sleeve (72). Two guide blocks (73) are symmetrically fixedly connected to the upper top of the impact frame (71), and two guide frames (74) are symmetrically fixedly connected to the lower bottom of the top plate (3). The impact frame (71) is slidably sleeved with the guide frames (74) through the guide blocks (73).

3. The detection tool of a door lock sensor of an automobile according to claim 1, characterized in that: The lifting assembly (5) includes a drive motor (51) fixedly connected to the top of the top plate (3). The output end of the drive motor (51) is fixedly connected to a drive rod (52). The outer wall of the drive rod (52) is symmetrically arranged with two sets of guide grooves (521). The top end of the top plate (3) is fixedly connected to a bearing frame (522). The drive rod (52) is rotatably connected to the bearing frame (522) through a bearing. The outer wall of the drive rod (52) is rotatably connected to two cable frames (53). The outer walls of the two cable frames (53) are all wrapped with cable bodies (54). The extension end of the cable body (54) is fixedly connected to a hook (541). The hook (541) is sleeved inside the sleeve frame (75).

4. The detection tooling for a door lock sensor of a vehicle according to claim 3, characterized in that: Two cable trays (53) are fixedly connected to each other on opposite sides. The outer wall of the drive rod (52) is slidably fitted with a second chuck (56) at the position of the two sets of guide grooves (521). Each second chuck (56) engages with the first chuck (55) for transmission. The outer wall of the second chuck (56) is symmetrically fixedly connected with a side ear (561). The top of the top plate (3) is symmetrically fixedly connected to two fixed brackets (57) on both sides of the drive rod (52). A first bidirectional electric push rod (58) is fixedly fitted inside each pair of fixed brackets (57). The two telescopic ends of the first bidirectional electric push rod (58) are fixedly connected to the opposite side of the two side ears (561).

5. The detection tooling for a door lock sensor of a vehicle according to claim 4, characterized in that: The counterweight assembly (8) includes a counterweight frame (81), and two rotating brackets (82) are symmetrically rotated on the outer side wall of the counterweight frame (81). The ends of the two rotating brackets (82) are fixedly connected to the outer side wall of the top plate (3). Several counterweight blocks (83) for increasing the counterweight are placed inside the counterweight frame (81).

6. The detection fixture for an automotive door lock sensor according to claim 5, characterized in that: Two connecting brackets (84) are symmetrically fixedly connected to the bottom end of the top plate (3). An auxiliary bracket (86) is rotatably sleeved inside each of the two connecting brackets (84). A second electric push rod (85) is fixedly connected to the bottom end of each of the two auxiliary brackets (86). The telescopic ends of the two second electric push rods (85) are rotatably sleeved with the outer wall of the counterweight frame (81). A second bidirectional electric push rod (87) is fixedly connected to the top end of the counterweight frame (81). A fixing plate (88) is fixedly connected to the two telescopic ends of the second bidirectional electric push rod (87). A barrier strip (89) is fixedly connected to the top end of each of the two fixing plates (88). The barrier strip (89) is slidably sleeved inside the counterweight frame (81). The end of the barrier strip (89) abuts against the outer wall of the nearest counterweight block (83).

7. The detection fixture for an automotive door lock sensor according to claim 1, characterized in that: The protective mechanism (6) includes a support frame (61) symmetrically fixedly connected to the top of the workbench (1). The two support frames (61) are each fixedly connected to a first electric push rod (62). The telescopic ends of the two first electric push rods (62) are each fixedly connected to an arc-shaped protective plate (63). The two arc-shaped protective plates (63) are sleeved on the outer wall of the placement platform (4).

Images