An electronic automobile instrument detector and a detection method thereof

Abstract

The application relates to the technical field of automobile instrument detection, in particular to an electronic automobile instrument detector and a detection method thereof. The application comprises a bottom plate, a wire harness limiting mechanism fixedly installed on the top surface of the bottom plate, a lifting mechanism fixedly installed on the top surface of the bottom plate, and a fixing mechanism installed on the lifting mechanism. The fixing mechanism comprises a primary clamping assembly, one end of the primary clamping assembly away from the lifting mechanism is provided with a secondary clamping assembly, and the secondary clamping assembly is rotationally connected with the primary clamping assembly. The wire harness limiting mechanism is used for orderly limiting and fixing the connecting wire harness of the automobile instrument. The clamping and fixing of the automobile instrument are realized through the setting of the fixing mechanism, the detection angle of the automobile instrument can be self-adjusted, the detection of the wire harness and the detection of the connecting head by the maintenance and detection personnel are facilitated through the setting of the wire harness limiting mechanism, and the problems of wire harness entanglement and confusion of the maintenance and detection personnel in processing complex wire harnesses are solved.

Description

Technical Field

[0001] This invention relates to the field of automotive instrument testing technology, specifically an electronic automotive instrument testing instrument and its testing method. Background Technology

[0002] Conventional automotive instruments typically include speedometers, tachometers, oil pressure gauges, coolant temperature gauges, fuel gauges, and charging gauges. With the rapid development of electronic technology, the electronic and intelligent transformation of automotive instrument panels has become an inevitable trend. Multifunctional, high-precision, high-sensitivity, and intuitively readable electronic digital and graphical displays are increasingly used in automobiles, and electronic instruments will gradually replace conventional electromechanical instruments. Currently, automotive electronic instrument panels are controlled by microcomputers and have self-diagnostic functions. Upon receiving a command, the electronic controller of the instrument panel will perform a system check on its main display device. If a fault is found, it will display the system malfunction and store the fault code for the affected area, which can be retrieved during repairs to pinpoint the location of the fault.

[0003] When a fault is confirmed in the dashboard, it may be necessary to disassemble it for inspection. Common faults in automotive electronic instruments may occur in sensors and wiring harness connectors. To facilitate further inspection of automotive electronic instruments by repair personnel, the prior art, such as the workbench for automotive dashboard inspection disclosed in application number (201920884038.8), includes an operating table for placing the dashboard. The operating table is equipped with a clamping mechanism that can clamp various types of automotive dashboards and firmly fix the dashboard between the clamping arms for easy inspection.

[0004] However, the following problems still exist in the use of existing technologies:

[0005] First, complex wire harnesses often need to be inspected during the testing process. However, existing testing devices lack the function of orderly limiting complex wire harnesses, which makes it easy for maintenance and testing personnel to encounter problems such as wire harness tangling and confusion when handling complex wire harnesses.

[0006] Second, when testing sensors, it is necessary to disassemble the sensor to test the resistor, or to test the resistor directly. However, the existing technology does not make it convenient to adjust the instrument's testing angle, which increases the difficulty of testing for maintenance and testing personnel and reduces the efficiency of testing work. Summary of the Invention

[0007] The purpose of this invention is to provide an electronic vehicle instrument testing instrument and its testing method to solve the problems mentioned in the background art.

[0008] The objective of this invention can be achieved through the following technical solutions:

[0009] An electronic vehicle instrument testing instrument includes a base plate, a wiring harness limiting mechanism fixedly installed on the top surface of the base plate, a lifting mechanism fixedly installed on the top surface of the base plate, and a fixing mechanism installed on the lifting mechanism. The lifting mechanism is used to drive the fixing mechanism to perform lifting and lowering movements.

[0010] The fixing mechanism is used to fix the car instrument panel. The fixing mechanism includes a primary clamping component fixedly connected to the lifting mechanism. A secondary clamping component is provided at the end of the primary clamping component away from the lifting mechanism. The secondary clamping component is rotatably connected to the primary clamping component. The secondary clamping component is used to directly contact the car instrument panel and to adjust the installation angle of the car instrument panel.

[0011] The wiring harness limiting mechanism is used to orderly limit and fix the connecting wiring harness of the automotive instrument panel. The wiring harness limiting mechanism is located below the fixing mechanism. The wiring harness limiting mechanism includes a primary limiting component and a secondary limiting component fixedly connected to the primary limiting component.

[0012] A light is installed on one end of the top surface of the base plate, and a mounting bracket is fixedly installed on the top surface of the base plate at one end of the light, and a multimeter is placed in the mounting bracket.

[0013] Furthermore, the first-level limiting component includes a mounting plate, a column, and a fourth sliding rod. Two mounting plates arranged parallel to each other are fixedly installed on the top surface of the base plate. The column is fixedly connected to one end of the top surface of the mounting plate. A first ring is damped and slidably installed on the periphery of the column. The fourth sliding rod is fixedly connected between the two first rings. Multiple third sliders are damped and slidably installed on the periphery of the fourth sliding rod. A limiting ring is fixedly connected to one side of the third slider.

[0014] The top surface of the third slider is provided with a recording plate for recording wire harness information.

[0015] Furthermore, the secondary limiting component includes a fixed seat, a second sliding rod, and a second slider. Two fixed seats are fixedly installed on the top surface of the mounting plate. The second sliding rod is fixedly connected between two fixed seats on different mounting plates and located on the same side. Multiple second rings are damped and slidably installed on the periphery of the second sliding rod. The multiple second rings on the two second sliding rods correspond one-to-one, and a third sliding rod is fixedly connected between the corresponding two second rings.

[0016] A second slider is damped and slidably mounted on the periphery of the third slider. An extension plate is fixedly connected to one side of the second slider. Side plates are obliquely placed at both ends of the top surface of the extension plate. The ends of the two side plates away from the extension plate converge, and a movable baffle is hinged to the ends of the side plates away from the extension plate. The two movable baffles are located between the two side plates. A third spring is fixedly installed between the movable baffles and the corresponding side plates. The ends of the two movable baffles away from the side plates are pressed and contacted with each other.

[0017] Furthermore, a first protrusion is fixedly connected to the middle position of one side of the base plate. The lifting mechanism includes a threaded column, a lifting mechanism, a threaded sleeve, and a sliding sleeve. The threaded column is fixedly installed on the top surface of the first protrusion. The lifting mechanism is threadedly installed on the outer periphery of the threaded column. The bottom surface of the lifting mechanism is rotatably connected to a sliding sleeve that is slidably sleeved on the outer periphery of the threaded column. The first-level clamping assembly is fixedly connected to the outer periphery of the sliding sleeve.

[0018] The threaded column has two sliding grooves on its outer periphery, which are parallel to the axis of the threaded column. The inner wall of the sliding sleeve has two second protrusions fixedly connected, and the ends of the two second protrusions away from the inner wall of the sliding sleeve are slidably installed in the two sliding grooves respectively.

[0019] Furthermore, the primary clamping assembly includes an L-shaped rod, a hollow rod, a rack, a gear, and a first spring. A connecting rod is fixedly connected to the outer side of the hollow rod, and the end of the connecting rod away from the hollow rod is fixedly connected to the periphery of the sliding sleeve.

[0020] Both ends of the hollow rod are slidably inserted with an L-shaped rod. A first connecting seat is fixedly installed at one end of the L-shaped rod inside the hollow rod. A rack that is slidably connected to the inner top surface of the hollow rod is fixedly connected to the side of the first connecting seat away from the L-shaped rod near its top. A rack that is slidably connected to the inner bottom surface of the hollow rod is fixedly connected to the side of the other first connecting seat away from the L-shaped rod near its bottom. The first spring is fixedly connected between the end of the rack away from the first connecting seat and the inner end face of the hollow rod in the corresponding direction.

[0021] The hollow rod is rotatably connected to a first rotating shaft at the middle position on the inner side near the sliding sleeve. The gear located inside the hollow rod is fixedly installed on the periphery of the first rotating shaft. The gear meshes with two racks simultaneously.

[0022] The end of the first rotating shaft away from the sliding sleeve rotates through the hollow rod and is fixedly installed with the first rotating shaft.

[0023] Furthermore, the secondary clamping assembly includes a U-shaped mounting base, and two U-shaped mounting bases are provided. The two U-shaped mounting bases are arranged opposite each other and are located between the two L-shaped rods. A second connecting base is fixedly installed on the side of the U-shaped mounting base near the L-shaped rod. A second rotating shaft is fixedly connected in the second connecting base. The end of the second rotating shaft away from the second connecting base is fixedly connected to the L-shaped rod at the corresponding position. A knob for rotating the second rotating shaft is fixedly installed on the periphery of the second rotating shaft.

[0024] A double-ended lead screw is rotatably connected between the two inner sides of the U-shaped mounting base, and a first slide rod is fixedly connected to it, which is parallel to the double-ended lead screw. The first slide rod is located on the side of the double-ended lead screw near the opening of the U-shaped mounting base. An adjusting wheel is fixedly installed at the middle position of the outer periphery of the double-ended lead screw. Two first sliders are also threaded on the outer periphery of the double-ended lead screw, which are symmetrically arranged with respect to the adjusting wheel. The first sliders are also slidably connected to the first slide rod. A first clamping block is fixedly installed at the end of the first slider away from the double-ended lead screw.

[0025] A second clamping block is fixedly installed at the middle position of the outer periphery of the first sliding rod.

[0026] Furthermore, one of the knobs has multiple positioning holes on the side away from the U-shaped mounting base, and the multiple positioning holes are circumferentially arrayed about the axis of the second rotating shaft.

[0027] Furthermore, one of the L-shaped rods is provided with a positioning component that cooperates with the positioning hole, the positioning component being used to limit the rotation of the second rotating shaft.

[0028] Furthermore, the positioning component includes a positioning pin, one end of which slides through the L-shaped rod and extends into the interior of one of the positioning holes. The other end of the positioning pin is located on the side of the L-shaped rod away from the positioning hole and is fixedly mounted with a baffle. A second spring located around the positioning pin is fixedly connected between the baffle and the L-shaped rod. A pull ring for pulling the positioning pin is fixedly mounted on the side of the baffle away from the baffle.

[0029] Another object of the present invention is to provide a testing method for the aforementioned electronic vehicle instrument tester, comprising the following steps:

[0030] S1: Fault Confirmation

[0031] Using the self-test function of the car's instrument panel, an instruction is given, and the electronic controller of the electronic instrument panel will perform a system check on its main display device. If a fault is found, it will display that the system has failed and store the fault code of the faulty part. During maintenance and testing, the fault code can be retrieved to find the faulty part.

[0032] S2: Installation of car dashboard

[0033] S201: Fixing the vehicle instrument panel using a fixing mechanism

[0034] In the initial state of the fixing mechanism, the two first clamping blocks in the secondary clamping assembly are at the limit position of the maximum distance. When clamping the car instrument, the handwheel is turned to rotate the gear, which drives the two racks at the same time. This causes the two racks to drive the two L-shaped rods to slide away from each other, thus increasing the distance between the two secondary clamping assemblies. Then, the car instrument is placed between the two secondary clamping assemblies. Then, the handwheel is slowly released. Under the elastic force of the first spring, the two racks return to their original position, which drives the two secondary clamping assemblies to clamp the car instrument, thus completing the clamping and fixing of the car instrument.

[0035] The two second clamping blocks in the secondary clamping assembly press against the car instrument at both ends. Then, by rotating the two adjusting wheels, the two first sliders in the same U-shaped mounting base slide closer to each other on the first slide rod, thereby driving the two first clamping blocks to move closer to each other and clamp and fix the two sides of the car instrument, thus realizing the secondary clamping and fixing of the car instrument.

[0036] S202: Adjust the detection height and angle of the car's instrument panel.

[0037] S2021: Height Adjustment

[0038] The rotating threaded sleeve in the lifting mechanism causes the threaded sleeve to slide up and down on the outer periphery of the threaded column. The sliding sleeve drives the fixed mechanism to move up and down, thereby causing the car instrument panel to move up and down. The lifting mechanism adjusts the car instrument panel to a suitable detection height.

[0039] S2022: Angle Adjustment

[0040] When the angle of the car's instrument panel needs to be adjusted, the repair technician pulls the locating pin through the pull ring, causing the end of the locating pin away from the pull ring to slide out of the locating hole and into a separated state. At this time, the limiting effect of the locating pin on the knob disappears. Then, by rotating the knob, the second shaft rotates, which in turn rotates the U-shaped mounting base, thereby adjusting the detection angle of the car's instrument panel. After the car's instrument panel is adjusted to the appropriate detection angle, the pull ring is released. Under the elastic force of the second spring, the locating pin resets, that is, the end of the locating pin away from the pull ring slides back into the corresponding locating hole, limiting the knob again.

[0041] S3: Cable Management

[0042] After the car instrument panel is installed, the wiring harness is systematically limited by a wiring harness limiting mechanism. One end of the wiring harness with the connector passes through the limiting ring, and then the wiring harness is inserted between the two side plates at the corresponding positions. By adjusting the height of the fourth slide rod on the two pillars, combined with the sliding adjustment of the third slide rod in the direction of the second slide rod axis and the sliding adjustment of the second slider on the third slide rod, the wiring harness is adjusted to a state that tends to be taut. Then, the corresponding position of the wiring harness is marked on the corresponding recording board. Then, the above actions are repeated for different wiring harnesses to complete the systematic limiting of the car instrument panel wiring harness.

[0043] S4: Routine testing

[0044] S401: Sensor Detection

[0045] For the inspection of various resistive sensors, the resistance value is measured with a multimeter. The measured resistance value is compared with its specified standard resistance value to determine whether the sensor is faulty. If the measured value is less than the specified value, it indicates that the sensor has an internal short circuit; otherwise, the sensor has an internal short circuit or poor contact.

[0046] S402: Inspection of wire harnesses and connectors

[0047] Electronic instruments require many connectors to connect the wiring harness to the dashboard. The wiring harness limiting mechanism limits multiple connectors in an orderly manner. Then, based on the fault information, check the wiring harness and connectors connected to the corresponding parts. When checking the connectors, use visual inspection or touch. The connector device should be complete and intact, and the plugs and sockets should have reliable contact and be free of rust. Then, visually inspect whether the wiring harness is damaged.

[0048] The beneficial effects of this invention are:

[0049] 1. This invention achieves clamping and fixing of automotive instruments through the setting of a fixing mechanism. The fixing mechanism, with its secondary and primary clamping components, facilitates clamping and fixing automotive instruments of different sizes. Furthermore, the rotatable connection between the L-shaped rod and the secondary clamping component, along with the positioning component between them, allows the invention to self-adjust the inspection angle of the automotive instrument, facilitating inspection work for maintenance personnel and improving work efficiency. The lifting mechanism in this invention allows for the adjustment of the fixing mechanism, thereby raising and lowering the automotive instrument. This enables the invention to adjust the automotive instrument to a suitable inspection height according to the work habits of maintenance personnel, further enhancing the convenience of inspection when using this invention.

[0050] 2. This invention also includes a wiring harness limiting mechanism. Through the arrangement of a recording plate, a primary limiting component, and a secondary limiting component, the wiring harness limiting mechanism achieves the orderly limiting of various wiring harnesses in the automotive instrument panel, and can also mark the connection points of each wiring harness. The wiring harness limiting mechanism facilitates the inspection of wiring harnesses and connectors by maintenance and testing personnel, solving the problem of wiring harness tangling and confusion that easily occurs when handling complex wiring harnesses, thus improving the practicality of this invention. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the invention. Figure 1 ;

[0053] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the invention. Figure 2 ;

[0054] Figure 3 This is a three-dimensional structural diagram of the fixing mechanism in this invention. Figure 1 ;

[0055] Figure 4 This is a three-dimensional structural diagram of the fixing mechanism in this invention. Figure 2 ;

[0056] Figure 5 This is a three-dimensional structural diagram of the interior of the hollow rod in this invention;

[0057] Figure 6 yes Figure 5 Enlarged view of section A;

[0058] Figure 7 This is a three-dimensional structural schematic diagram of the clamping component in this invention;

[0059] Figure 8 yes Figure 7 Enlarged view of section B;

[0060] Figure 9 This is a three-dimensional structural diagram of the wire harness limiting mechanism in this invention. Figure 1 ;

[0061] Figure 10 yes Figure 9 Enlarged view of section C;

[0062] Figure 11This is a three-dimensional structural diagram of the wire harness limiting mechanism in this invention. Figure 2 ;

[0063] Figure 12 yes Figure 11 Enlarged view of section D;

[0064] The attached figures are labeled as follows:

[0065] 1-Base plate, 2-Wire harness limiting mechanism, 3-Fixing mechanism, 4-Lifting mechanism, 5-Slide groove, 6-Threaded column, 7-Secondary clamping assembly, 8-L-shaped rod, 9-Hollow rod, 10-Threaded sleeve, 11-Slide sleeve, 12-Handwheel, 13-Second protrusion, 14-Connecting rod, 15-First rotating shaft, 16-First connecting seat, 17-Rack, 18-Gear, 19-First spring, 20-U-shaped mounting seat, 21-Double-ended lead screw, 22-First slide rod, 23-First slider, 24-First clamping block, 25-Adjusting wheel, 26-Second clamping block, 27-Knob, 28-The 29-Positioning hole, 30-Second rotating shaft, 31-Positioning pin, 32-Second spring, 33-First protrusion, 34-Baffle, 35-Pull ring, 36-Second slide rod, 37-Fixed seat, 38-Mounting plate, 39-Third slide rod, 40-Column, 41-First collar, 42-Fourth slide rod, 43-Second slider, 44-Second collar, 45-Third slider, 46-Recording plate, 47-Limiting ring, 48-Side plate, 49-Third spring, 50-Modible baffle, 51-Extending plate, 52-Lighting lamp, 53-Mounting bracket, 54-Multimeter. Detailed Implementation

[0066] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0067] Example 1:

[0068] Please see Figures 1-8 In this embodiment of the invention, an electronic vehicle instrument tester and its test method include 1, and further include a wire harness limiting mechanism 2 fixedly installed on the top surface of the base plate 1, a lifting mechanism 4 fixedly installed on the top surface of the base plate 1, and a fixing mechanism 3 installed on the lifting mechanism 4. The lifting mechanism 4 is used to drive the fixing mechanism 3 to perform lifting and lowering movements.

[0069] The fixing mechanism 3 is used to fix the car instrument panel. The fixing mechanism 3 includes a primary clamping component fixedly connected to the lifting mechanism 4. A secondary clamping component 7 is provided at the end of the primary clamping component away from the lifting mechanism 4. The secondary clamping component 7 is rotatably connected to the primary clamping component. The secondary clamping component 7 is used to directly contact the car instrument panel and to adjust the installation angle of the car instrument panel.

[0070] The wiring harness limiting mechanism 2 is used to orderly limit and fix the connecting wiring harness of the automotive instrument panel. The wiring harness limiting mechanism 2 is located below the fixing mechanism 3. The wiring harness limiting mechanism 2 includes a primary limiting component and a secondary limiting component fixedly connected to the primary limiting component.

[0071] like Figures 1-4 As shown, a first protrusion 33 is fixedly connected to the middle position of one side of the base plate 1. The lifting mechanism includes a threaded column 6, a lifting mechanism 4, a threaded sleeve 10 and a sliding sleeve 11. The threaded column 6 is fixedly installed on the top surface of the first protrusion 33. The lifting mechanism 4 is threadedly installed on the outer periphery of the threaded column 6. The bottom surface of the lifting mechanism 4 is rotatably connected to the sliding sleeve 11 which is slidably sleeved on the outer periphery of the threaded column 6. A primary clamping assembly is fixedly connected to the outer periphery of the sliding sleeve 11.

[0072] Two grooves 5 are provided on the outer periphery of the threaded column 6. The two grooves 5 are arranged parallel to the axis of the threaded column 6. Two second protrusions 13 are fixedly connected to the inner wall of the sleeve 11. The ends of the two second protrusions 13 away from the inner wall of the sleeve 11 are slidably installed in the two grooves 5 respectively.

[0073] like Figures 3-6 As shown, the primary clamping assembly includes an L-shaped rod 8, a hollow rod 9, a rack 17, a gear 18, and a first spring 19. A connecting rod 14 is fixedly connected to the outer side of the hollow rod 9, and the end of the connecting rod 14 away from the hollow rod 9 is fixedly connected to the periphery of the sliding sleeve 11.

[0074] Both ends of the hollow rod 9 are slidably inserted with an L-shaped rod 8. The end of the L-shaped rod 8 located inside the hollow rod 9 is fixedly installed with a first connecting seat 16. On the side of one first connecting seat 16 away from the L-shaped rod 8, near its top, a rack 17 is fixedly connected to the inner top surface of the hollow rod 9. On the side of the other first connecting seat 16 away from the L-shaped rod 8, near its bottom, a rack 17 is fixedly connected to the inner bottom surface of the hollow rod 9. The end of the rack 17 away from the first connecting seat 16 is fixedly connected to the inner end face of the hollow rod 9 in the corresponding direction with a first spring 19.

[0075] A first rotating shaft 15 is rotatably connected to the inner side of the hollow rod 9 near the sliding sleeve 11 at the middle position. A gear 18 located inside the hollow rod 9 is fixedly installed on the outer periphery of the first rotating shaft 15. The gear 18 is simultaneously meshed with two racks 17.

[0076] The end of the first rotating shaft 15 away from the sliding sleeve 11 rotates through the hollow rod 9 and is fixedly installed thereon.

[0077] like Figure 3 , Figure 4 and Figure 7 As shown, the secondary clamping assembly 7 includes a U-shaped mounting base 20. Two U-shaped mounting bases 20 are provided, which are arranged opposite each other and located between two L-shaped rods 8. A second connecting base 28 is fixedly installed on the side of the U-shaped mounting base 20 near the L-shaped rod 8. A second rotating shaft 30 is fixedly connected in the second connecting base 28. The end of the second rotating shaft 30 away from the second connecting base 28 is fixedly connected to the L-shaped rod 8 at the corresponding position. A knob 27 for rotating the second rotating shaft 30 is fixedly installed on the periphery of the second rotating shaft 30.

[0078] A double-ended lead screw 21 is rotatably connected between the two inner sides of the U-shaped mounting base 20, and a first slide rod 22 is fixedly connected to it, which is parallel to the double-ended lead screw 21. The first slide rod 22 is located on the side of the double-ended lead screw 21 near the opening of the U-shaped mounting base 20. An adjusting wheel 25 is fixedly installed in the middle of the outer periphery of the double-ended lead screw 21. Two first sliders 23 are also threaded on the outer periphery of the double-ended lead screw 21, which are symmetrically arranged with respect to the adjusting wheel 25. The first sliders 23 are also slidably connected to the first slide rod 22. A first clamping block 24 is fixedly installed at the end of the first slider 23 away from the double-ended lead screw 21.

[0079] A second clamping block 26 is fixedly installed at the middle position of the outer periphery of the first slide bar 22.

[0080] like Figure 8 and Figure 7 As shown, a knob 27 has multiple positioning holes 29 on the side away from the U-shaped mounting base 20, and the multiple positioning holes 29 are arranged in a circumferential array about the axis of the second rotating shaft 30; an L-shaped rod 8 is provided with a positioning component that cooperates with the positioning holes 29. The positioning component includes a positioning pin 31. One end of the positioning pin 31 slides through the L-shaped rod 8 and extends into the interior of a positioning hole 29. The other end of the positioning pin 31 is located on the side of the L-shaped rod 8 away from the positioning hole 29, and a baffle 34 is fixedly installed thereon. A second spring 32 located on the periphery of the positioning pin 31 is fixedly connected between the baffle 34 and the L-shaped rod 8. A pull ring 35 for pulling the positioning pin 31 is fixedly installed on the side of the baffle 34 away from the baffle 34.

[0081] Currently, automotive electronic instrument panels are controlled by microcomputers and have self-diagnostic functions. Upon receiving a command, the electronic controller of the instrument panel performs a system check on its main display device. If a fault is found, it will display the system malfunction and store the fault code for the affected area. This code can be retrieved during repair to pinpoint the faulty component. When a fault is confirmed in the instrument panel, it may be necessary to disassemble it for testing. Common faults in automotive electronic instruments often occur in sensors and wiring harness connectors. To facilitate further testing of automotive electronic instruments by repair personnel, existing technologies already exist for testing disassembled automotive instruments. However, the testing of electronic automotive instruments often requires the inspection of complex wiring harnesses. Current testing devices lack the function of orderly limiting complex wiring harnesses, leading to problems such as wire tangling and confusion when handling complex wiring harnesses. Furthermore, when testing sensors, it is necessary to remove the sensor to test the resistor, or to directly test the resistor. Current technologies do not conveniently adjust the instrument panel's testing angle, increasing the difficulty of testing and reducing the efficiency of the testing work.

[0082] In this invention, the fixing mechanism 3 achieves clamping and fixing of the automotive instrument panel. The fixing mechanism 3, with its secondary clamping component 7 and primary clamping component, facilitates clamping and fixing automotive instruments of different sizes. Furthermore, the rotatable connection between the L-shaped rod 8 and the secondary clamping component 7, along with the positioning component between them, allows for self-adjustment of the inspection angle of the automotive instrument panel, facilitating inspection work for maintenance personnel and improving work efficiency. The lifting mechanism 4 allows for the raising and lowering of the fixing mechanism 3, thereby raising and lowering the automotive instrument panel. This enables the invention to adjust the automotive instrument panel to a suitable inspection height according to the work habits of maintenance personnel, further enhancing the convenience of inspection when using this invention.

[0083] The present invention also includes a wiring harness limiting mechanism 2. Through the setting of a recording plate 46, a primary limiting component, and a secondary limiting component, the wiring harness limiting mechanism 2 achieves the purpose of orderly limiting various wiring harnesses of the automotive instrument panel, and can also mark the connection points of each wiring harness. The wiring harness limiting mechanism 2 facilitates the inspection of wiring harnesses and connectors by maintenance and testing personnel, solving the problem of wiring harness tangling and confusion that easily occurs when handling complex wiring harnesses, thus improving the practicality of the present invention.

[0084] Example 2:

[0085] Please see Figures 9-12Based on Embodiment 1, the first-level limiting component includes a mounting plate 38, a column 40, and a fourth sliding rod 42. Two parallel mounting plates 38 are fixedly installed on the top surface of the base plate 1. A column 40 is fixedly connected to one end of the top surface of the mounting plate 38. A first ring 41 is damped and slidably installed on the periphery of the column 40. A fourth sliding rod 42 is fixedly connected between the two first rings 41. Multiple third sliders 45 are damped and slidably installed on the periphery of the fourth sliding rod 42. A limiting ring 47 is fixedly connected to one side of the third slider 45. A recording plate 46 for recording wire harness information is provided on the top surface of the third slider 45.

[0086] The secondary limiting component includes a fixed seat 37, a second slide rod 36, and a second slider 43. Two fixed seats 37 are fixedly mounted on the top surface of the mounting plate 38. A second slide rod 36 is fixedly connected between two fixed seats 37 on different mounting plates 38 and located on the same side. Multiple second collars 44 are damped and slidably mounted on the periphery of the second slide rod 36. The multiple second collars 44 on the two second slide rods 36 correspond one-to-one, and a third slide rod 39 is fixedly connected between corresponding two second collars 44. The third slide rod 39... A second slider 43 is mounted on the outer periphery with damping. An extension plate 51 is fixedly connected to one side of the second slider 43. Side plates 48 are obliquely placed at both ends of the top surface of the extension plate 51. The ends of the two side plates 48 away from the extension plate 51 converge, and the ends of the side plates 48 away from the extension plate 51 are hinged to movable baffles 50. The two movable baffles 50 are located between the two side plates 48. A third spring 49 is fixedly installed between the movable baffles 50 and the corresponding side plates 48. The ends of the two movable baffles 50 away from the side plates 48 are pressed and contacted with each other.

[0087] Example 3:

[0088] Please see Figure 1 Based on Embodiment 2, a lighting lamp 52 is installed at one end of the top surface of the base plate 1, and a mounting bracket 53 is fixedly installed on the top surface of the base plate 1 at the end of the lighting lamp 52. A multimeter 54 is placed in the mounting bracket 53. The lighting lamp 52 provides illumination during the testing process, which helps to improve the quality of the testing work; the mounting bracket 53 and the multimeter 54 facilitate resistance measurement during the testing work, thus improving the ease of use of the present invention.

[0089] Example 4:

[0090] Please see Figures 1-12 Based on Example 3, this example provides a detailed method for using an electronic vehicle instrument testing instrument and its testing method, including the following steps:

[0091] S1: Fault Confirmation

[0092] Using the self-test function of the car's instrument panel, an instruction is given, and the electronic controller of the electronic instrument panel will perform a system check on its main display device. If a fault is found, it will display that the system has failed and store the fault code of the faulty part. During maintenance and testing, the fault code can be retrieved to find the faulty part.

[0093] S2: Installation of car dashboard

[0094] S201: The car instrument panel is fixed by the fixing mechanism 3.

[0095] In the initial state of the fixing mechanism 3, the two first clamping blocks 24 in the secondary clamping assembly 7 are at the maximum distance limit position. When clamping the car instrument, the handwheel 12 rotates the gear 18, and the gear 18 drives the two racks 17 at the same time, so that the two racks 17 drive the two L-shaped rods 8 to slide away from each other. Then the distance between the two secondary clamping assemblies 7 increases. Then the car instrument is placed between the two secondary clamping assemblies 7. Then the handwheel 12 is slowly released. Under the elastic force of the first spring 19, the two racks 17 are reset, and the two secondary clamping assemblies 7 clamp the car instrument, thus completing the clamping and fixing of the car instrument.

[0096] The two second clamping blocks 26 in the secondary clamping assembly 7 press against the car instrument at both ends. Then, by rotating the two adjusting wheels 25, the two first sliders 23 in the same U-shaped mounting base 20 slide closer to each other on the first slide rod 22, thereby driving the two first clamping blocks 24 to move closer to each other and clamp and fix the two sides of the car instrument, thus realizing the secondary clamping and fixing of the car instrument.

[0097] S202: Adjust the detection height and angle of the car's instrument panel.

[0098] S2021: Height Adjustment

[0099] The threaded sleeve 10 in the lifting mechanism 4 rotates, causing the threaded sleeve 10 to drive the sliding sleeve 11 to slide up and down on the outer periphery of the threaded column 6. The sliding sleeve 11 drives the fixing mechanism 3 to move up and down, thereby driving the car instrument to move up and down. The lifting mechanism 4 adjusts the car instrument to a suitable detection height.

[0100] S2022: Angle Adjustment

[0101] When the angle of the car instrument panel needs to be adjusted, the maintenance and inspection personnel pull the positioning pin 31 through the pull ring 35, causing the end of the positioning pin 31 away from the pull ring 35 to slide out of the positioning hole 29 and into a separated state. At this time, the limiting effect of the positioning pin 31 on the knob 27 disappears. Then, by rotating the knob 27, the second rotating shaft 30 is rotated, which in turn drives the U-shaped mounting base 20 to rotate, thereby adjusting the detection angle of the car instrument panel. After the car instrument panel is adjusted to the appropriate detection angle, the pull ring 35 is released. Under the elastic force of the second spring 32, the positioning pin 31 is reset, that is, the end of the positioning pin 31 away from the pull ring 35 slides back into the corresponding positioning hole 29, limiting the knob 27 again.

[0102] S3: Cable Management

[0103] After the car instrument panel is installed, the wiring harness of the car instrument panel is orderly limited by the wiring harness limiting mechanism 2. One end of the wiring harness with the connector passes through the limiting ring 47, and then the wiring harness is inserted between the two side plates 48 at the corresponding positions. By adjusting the height of the fourth slide bar 42 on the two columns 40, and coordinating the sliding adjustment of the third slide bar 39 in the axial direction of the second slide bar 36 and the sliding adjustment of the second slider 43 on the third slide bar 39, the wiring harness is adjusted to a state that tends to be taut. Then, the corresponding part of the wiring harness is marked on the corresponding recording plate 46. Then, the above actions are repeated for different wiring harnesses to complete the orderly limiting of the car instrument panel wiring harness.

[0104] S4: Routine testing

[0105] S401: Sensor Detection

[0106] For the inspection of various resistive sensors, the resistance value is measured with a multimeter 54. The measured resistance value is compared with its specified standard resistance value to determine whether the sensor is faulty. If the measured value is less than the specified value, it indicates that the sensor has an internal short circuit; otherwise, the sensor has an internal short circuit or poor contact.

[0107] S402: Inspection of wire harnesses and connectors

[0108] Electronic instruments require many connectors to connect the wiring harness to the dashboard. The wiring harness limiting mechanism 2 limits multiple connectors in an orderly manner. Then, based on the fault information, check the wiring harness and connectors connected to the corresponding parts. When checking the connectors, use visual inspection or touch. The connector device should be complete and intact, and the plugs and sockets should have reliable contact and be free of rust. Then, visually inspect whether the wiring harness is damaged.

[0109] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An electronic vehicle instrument testing instrument, comprising a base plate (1), characterized in that, It also includes a wire harness limiting mechanism (2) fixedly installed on the top surface of the base plate (1), a lifting mechanism (4) fixedly installed on the top surface of the base plate (1), and a fixing mechanism (3) installed on the lifting mechanism (4). The lifting mechanism (4) is used to drive the fixing mechanism (3) to perform lifting and lowering movements. The fixing mechanism (3) is used to fix the car instrument. The fixing mechanism (3) includes a primary clamping component fixedly connected to the lifting mechanism (4). A secondary clamping component (7) is provided at the end of the primary clamping component away from the lifting mechanism (4). The secondary clamping component (7) is rotatably connected to the primary clamping component. The secondary clamping component (7) is used to directly contact the car instrument and to adjust the installation angle of the car instrument. The wiring harness limiting mechanism (2) is used to orderly limit and fix the connecting wiring harness of the vehicle instrument. The wiring harness limiting mechanism (2) is located below the fixing mechanism (3). The wiring harness limiting mechanism (2) includes a primary limiting component and a secondary limiting component fixedly connected to the primary limiting component. A lighting lamp (52) is installed on one end of the top surface of the base plate (1), and a mounting bracket (53) is fixedly installed on the top surface of the base plate (1) at one end of the lighting lamp (52). A multimeter (54) is placed in the mounting bracket (53). The secondary limiting component includes a fixed seat (37), a second slide rod (36), and a second slider (43). Two fixed seats (37) are fixedly installed on the top surface of the mounting plate (38). The second slide rod (36) is fixedly connected between the two fixed seats (37) on different mounting plates (38) and located on the same side. Multiple second collars (44) are damped and slidably installed on the periphery of the second slide rod (36). The multiple second collars (44) on the two second slide rods (36) correspond one-to-one, and a third slide rod (39) is fixedly connected between the corresponding two second collars (44). A second slider (43) is damped and slidably mounted on the periphery of the third slider (39). An extension plate (51) is fixedly connected to one side of the second slider (43). Side plates (48) are obliquely placed at both ends of the top surface of the extension plate (51). The ends of the two side plates (48) away from the extension plate (51) converge, and a movable baffle (50) is hinged to the end of the side plate (48) away from the extension plate (51). The two movable baffles (50) are located between the two side plates (48). A third spring (49) is fixedly installed between the movable baffle (50) and the corresponding side plate (48). The ends of the two movable baffles (50) away from the side plate (48) press against each other.

2. The electronic vehicle instrument testing instrument according to claim 1, characterized in that, The first-level limiting component includes a mounting plate (38), a column (40), and a fourth sliding rod (42). Two mounting plates (38) are fixedly installed on the top surface of the base plate (1) and are arranged parallel to each other. The column (40) is fixedly connected to one end of the top surface of the mounting plate (38). A first collar (41) is damped and slidably installed on the periphery of the column (40). The fourth sliding rod (42) is fixedly connected between the two first collars (41). A plurality of third sliders (45) are damped and slidably installed on the periphery of the fourth sliding rod (42). A limiting ring (47) is fixedly connected to one side of the third slider (45). The top surface of the third slider (45) is provided with a recording plate (46) for recording wire harness information.

3. The electronic vehicle instrument testing instrument according to claim 1, characterized in that, A first protrusion (33) is fixedly connected to the middle position of one side of the base plate (1). The lifting mechanism includes a threaded column (6), a lifting mechanism (4), a threaded sleeve (10), and a sliding sleeve (11). The threaded column (6) is fixedly installed on the top surface of the first protrusion (33). The lifting mechanism (4) is threadedly installed on the outer periphery of the threaded column (6). The bottom surface of the lifting mechanism (4) is rotatably connected to a sliding sleeve (11) that is slidably sleeved on the outer periphery of the threaded column (6). The first-level clamping assembly is fixedly connected to the outer periphery of the sliding sleeve (11). Two grooves (5) are provided on the periphery of the threaded column (6). The two grooves (5) are arranged parallel to the axis of the threaded column (6). Two second protrusions (13) are fixedly connected to the inner wall of the sleeve (11). The ends of the two second protrusions (13) away from the inner wall of the sleeve (11) are respectively slidably installed in the two grooves (5).

4. The electronic vehicle instrument testing instrument according to claim 3, characterized in that, The first-level clamping assembly includes an L-shaped rod (8), a hollow rod (9), a rack (17), a gear (18), and a first spring (19). A connecting rod (14) is fixedly connected to the outside of the hollow rod (9), and the end of the connecting rod (14) away from the hollow rod (9) is fixedly connected to the periphery of the sliding sleeve (11). Both ends of the hollow rod (9) are slidably inserted with an L-shaped rod (8). The L-shaped rod (8) is fixedly installed with a first connecting seat (16) at one end inside the hollow rod (9). A rack (17) that is slidably connected to the inner top surface of the hollow rod (9) is fixedly connected to the side of the first connecting seat (16) away from the L-shaped rod (8) near its top. A rack (17) that is slidably connected to the inner bottom surface of the hollow rod (9) is fixedly connected to the side of the other first connecting seat (16) away from the L-shaped rod (8) near its bottom. The first spring (19) is fixedly connected between the end of the rack (17) away from the first connecting seat (16) and the inner end face of the hollow rod (9) in the corresponding direction. The hollow rod (9) is rotatably connected to the first rotating shaft (15) at the middle position on the inner side near the sliding sleeve (11). The gear (18) located inside the hollow rod (9) is fixedly installed on the outer periphery of the first rotating shaft (15). The gear (18) meshes with two racks (17) at the same time. The first rotating shaft (15) is rotated through the hollow rod (9) at the end away from the sliding sleeve (11) and is fixedly installed with the first rotating shaft (15).

5. The electronic vehicle instrument testing instrument according to claim 4, characterized in that, The secondary clamping assembly (7) includes a U-shaped mounting base (20), and there are two U-shaped mounting bases (20) arranged opposite each other and located between the two L-shaped rods (8). A second connecting base (28) is fixedly installed on the side of the U-shaped mounting base (20) close to the L-shaped rod (8). A second rotating shaft (30) is fixedly connected in the second connecting base (28). The end of the second rotating shaft (30) away from the second connecting base (28) is fixedly connected to the L-shaped rod (8) at the corresponding position. A knob (27) for rotating the second rotating shaft (30) is fixedly installed on the periphery of the second rotating shaft (30). A double-ended lead screw (21) is rotatably connected between the two inner sides of the U-shaped mounting base (20), and a first slide rod (22) is fixedly connected to the double-ended lead screw (21) and arranged parallel to the double-ended lead screw (21). The first slide rod (22) is located on the side of the double-ended lead screw (21) close to the opening of the U-shaped mounting base (20). An adjusting wheel (25) is fixedly installed at the middle position of the outer periphery of the double-ended lead screw (21). Two first sliders (23) are also threaded on the outer periphery of the double-ended lead screw (21) and arranged symmetrically with respect to the adjusting wheel (25). The first sliders (23) are also slidably connected to the first slide rod (22). A first clamping block (24) is fixedly installed at the end of the first slider (23) away from the double-ended lead screw (21). A second clamping block (26) is fixedly installed at the middle position of the outer periphery of the first slide bar (22).

6. The electronic vehicle instrument testing instrument according to claim 5, characterized in that, A plurality of positioning holes (29) are provided on the side of one of the knobs (27) away from the U-shaped mounting base (20), and the plurality of positioning holes (29) are arranged in a circumferential array about the axis of the second rotating shaft (30).

7. The electronic vehicle instrument testing instrument according to claim 6, characterized in that, A positioning component is provided on one of the L-shaped rods (8) for use with the positioning hole (29), the positioning component being used to limit the rotation of the second rotating shaft (30).

8. The electronic vehicle instrument testing instrument according to claim 7, characterized in that, The positioning component includes a positioning pin (31), one end of which slides through the L-shaped rod (8) and extends into the interior of a positioning hole (29). The other end of the positioning pin (31) is located on the side of the L-shaped rod (8) away from the positioning hole (29) and is fixedly mounted with a baffle (34). A second spring (32) located on the periphery of the positioning pin (31) is fixedly connected between the baffle (34) and the L-shaped rod (8). A pull ring (35) for pulling the positioning pin (31) is fixedly mounted on the side of the baffle (34) away from the baffle (34).

9. A testing method for an electronic automotive instrument testing instrument, characterized in that, The detection method includes the following steps: S1: Fault Confirmation Using the self-test function of the car's instrument panel, an instruction is given, and the electronic controller of the electronic instrument panel will perform a system check on its main display device. If a fault is found, it will display that the system has failed and store the fault code of the faulty part. During maintenance and testing, the fault code can be retrieved to find the faulty part. S2: Installation of car dashboard S201: Fix the car instrument panel by fixing mechanism (3) In the initial state of the fixing mechanism (3), the two first clamping blocks (24) in the secondary clamping assembly (7) are at the limit position of the maximum distance. When clamping the car instrument, the gear (18) is rotated by the handwheel (12), and the gear (18) drives the two racks (17) at the same time, so that the two racks (17) drive the two L-shaped rods (8) to slide away from each other. Then the distance between the two secondary clamping assemblies (7) increases. Then the car instrument is placed between the two secondary clamping assemblies (7), and then the handwheel (12) is slowly released. Under the elastic force of the first spring (19), the two racks (17) are reset, and the two secondary clamping assemblies (7) clamp the car instrument, thus completing the clamping and fixing of the car instrument. The two second clamping blocks (26) in the secondary clamping assembly (7) press against the car instrument at both ends. Then, by rotating the two adjusting wheels (25), the two first sliders (23) in the same U-shaped mounting base (20) slide closer to each other on the first slide rod (22), thereby driving the two first clamping blocks (24) to move closer to each other, clamping and fixing the two sides of the car instrument, thus realizing the secondary clamping and fixing of the car instrument. S202: Adjust the detection height and angle of the car's instrument panel. S2021: Height Adjustment The threaded sleeve (10) in the lifting mechanism (4) rotates, causing the threaded sleeve (10) to drive the sliding sleeve (11) to slide up and down on the periphery of the threaded column (6). The sliding sleeve (11) drives the fixing mechanism (3) to move up and down, thereby driving the car instrument to move up and down. The lifting mechanism (4) adjusts the car instrument to a suitable detection height. S2022: Angle Adjustment When the angle of the car instrument needs to be adjusted, the maintenance and inspection personnel pull the positioning pin (31) through the pull ring (35), so that the end of the positioning pin (31) away from the pull ring (35) slides out of the positioning hole (29) to the separated state; then the limiting effect of the positioning pin (31) on the knob (27) disappears. At this time, by rotating the knob (27), the second rotating shaft (30) is driven to rotate, thereby driving the U-shaped mounting base (20) to rotate, thereby realizing the adjustment of the detection angle of the car instrument. After the car instrument is adjusted to the appropriate detection angle, the pull ring (35) is released. Under the elastic force of the second spring (32), the positioning pin (31) is reset, that is, the end of the positioning pin (31) away from the pull ring (35) is slid and inserted into the corresponding positioning hole (29) again, limiting the knob (27) again. S3: Cable Management After the car instrument panel is installed, the wiring harness of the car instrument panel is orderly limited by the wiring harness limiting mechanism (2). The end of the wiring harness with the connector passes through the limiting ring (47), and then the wiring harness is inserted between the two side plates (48) at the corresponding position. By adjusting the height of the fourth slide bar (42) on the two columns (40), and cooperating with the sliding adjustment of the third slide bar (39) in the axial direction of the second slide bar (36) and the sliding adjustment of the second slider (43) on the third slide bar (39), the wiring harness is adjusted to a state of tension. Then the corresponding part of the wiring harness is marked on the corresponding recording plate (46). Then the above actions are repeated for different wiring harnesses to complete the orderly limiting of the car instrument panel wiring harness. S4: Routine testing S401: Sensor Detection For the inspection of various resistive sensors, the resistance value is measured by a multimeter (54). The measured resistance value is compared with the standard resistance value specified by the multimeter to determine whether the sensor is faulty. If the measured value is less than the specified value, it indicates that the sensor is short-circuited internally; otherwise, the sensor is short-circuited internally or has poor contact. S402: Inspection of wire harnesses and connectors Electronic instruments require many connectors to connect the wire harness to the instrument panel. The wire harness limiting mechanism (2) limits multiple connectors in an orderly manner. Then, check the wire harness and connectors connected to the corresponding parts according to the fault information. When checking the connectors, use visual inspection or touch. The connector device should be complete and intact. The plug and socket should have reliable contact and no rust. Then, observe the wire harness for damage with the naked eye.

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