Test lamp for automobile maintenance and detection

Abstract

The utility model relates to the technical field of automobile maintenance, and discloses a test lamp for automobile maintenance and detection, which comprises a probe pen, a connecting block is fixedly connected inside the probe pen, two LED lamps are fixedly connected to the outer side of the connecting block, glass is fixedly connected to one end of the outer side of the connecting block, and a loading and unloading assembly is arranged at the bottom end of the probe pen. A first clamping block is arranged at the bottom end of the loading and unloading assembly, second clamping blocks are fixedly connected to the front end and the rear end of the first clamping block correspondingly, extrusion grooves are formed in the left end and the right end of the first clamping block correspondingly, second springs are fixedly connected to the opposite sides of the two extrusion grooves correspondingly, and third clamping blocks are fixedly connected to the ends, away from each other, of the second springs correspondingly. According to the utility model, the main probe can be rapidly replaced through the assembly and disassembly assembly to adapt to detection of different electrical components, and the length of the anti-freezing flexible wire connecting probe and the clip can be adjusted through the arrangement assembly as required to prevent the anti-freezing flexible wire from being too long to be inconvenient to arrange and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile maintenance, in particular to a test lamp for automobile maintenance and detection. Background Art

[0002] A test light for car maintenance and inspection is a tool that plays an important role in car maintenance. It usually consists of a bulb, wires, a test probe, and a handle. Its main function is to help maintenance personnel quickly determine the working status of the car's circuit.

[0003] When in use, connect one end of the test light to the grounding point of the vehicle (the metal part of the vehicle body), and the other end to the circuit wire or connector to be tested. If the green light is on, it means that the circuit is energized. If the red light is on, there may be a circuit breaker or other faults in the circuit, thereby achieving the purpose of detecting whether the circuit is energized; gradually move the contact point of the test light along the circuit. If the green light suddenly goes out at a certain position, then this may be the circuit breaker point, thereby achieving the purpose of finding the circuit breaker fault.

[0004] However, the antifreeze cords of some existing test lights for automobile maintenance and inspection are long, which are easily entangled and messy when arranged, making it inconvenient to organize and maintain, and also increase the risk of interference with other components. In addition, when inspecting components of different types or specifications, it is usually necessary to replace them with more suitable models. The main probes of some test lights are usually fixed with screwdrivers and screws, which is inconvenient when replacing the main probes, affecting the inspection efficiency. Therefore, a test light for automobile maintenance and inspection is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a test light for automobile maintenance and inspection, aiming to improve the problems in the prior art such as the long antifreeze cord being unfavorable for arrangement and maintenance, and the inconvenience in replacing the main probe affecting the inspection efficiency.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a test light for automobile maintenance inspection, including a probe pen, the interior of the probe pen is fixedly connected to a connecting block, the outer side of the connecting block is fixedly connected to two LED lights, one end of the outer side of the connecting block is fixedly connected to glass, the bottom end of the probe pen is provided with a loading and unloading assembly, the bottom end of the loading and unloading assembly is provided with a card block 1, the front and rear ends of the card block 1 are fixedly connected to the card block 2, the left and right ends of the card block 1 are provided with an extrusion groove, the opposite sides of the two extrusion grooves are fixedly connected to the spring 2, the spring The two ends away from each other are fixedly connected with a card block three, the bottom end of the card block one is fixedly connected with the main probe, the card block one is engaged with the loading and unloading assembly, the loading and unloading assembly is used to fix the card block one and the main probe to the bottom end of the probe pen, the right end of the probe pen is provided with a fixing plate, the left end of the fixing plate is fixedly connected with a vertical plate, the top of the fixing plate is provided with a tidying assembly, the top right side of the probe pen is fixedly connected with an antifreeze cord, the end of the antifreeze cord is fixedly connected with a clip, the bottom right part of the clip is fixedly connected with an auxiliary probe, and the tidying assembly is used to arrange the antifreeze cord.

[0007] As a further description of the above technical solution: the loading and unloading assembly includes a mounting block, the top of the mounting block is fixedly connected to the bottom of the probe pen, the middle of the mounting block is provided with a card slot 1, the interior of the mounting block is provided with a card slot 2 on the front and rear sides of the card slot 1, the left and right ends of the mounting block are provided with a card slot 3 on the left and right sides of the card slot 1, the middle and upper parts of the left and right sides of the mounting block are fixedly connected to the fixing blocks, the bottom ends of the two fixing blocks are provided with a slide slot 1, the top of the fixing block is provided with a slide slot 2 at the top of the slide slot 1, the top of the fixing block is provided with a T-shaped block, the bottom of the T-shaped block is fixedly connected to a slider, the middle and lower parts of the opposite ends of the slider are fixedly connected to an extrusion block, the tops of the opposite ends of the slider are fixedly connected to a spring 1, and the opposite ends of the two springs 1 are respectively fixedly connected to the opposite ends of the slide slot 1.

[0008] As a further description of the above technical solution: the card block 1 is connected to the card slot 1, the two card blocks 2 are connected to the card slots 2 on the same side, and the two card blocks 3 are connected to the card slots 3 on the same side.

[0009] As a further description of the above technical solution: the bottom ends of the T-shaped blocks are slidably connected to the second slide groove on the same side, the top ends of the sliders are slidably connected to the first slide groove on the same side, and the middle of the extrusion block and the middle of the slot three are located on the same horizontal line.

[0010] As a further description of the above technical solution: the sorting assembly includes a shaft sleeve, the left end of the shaft sleeve is fixedly connected to two connecting plates, the left ends of the two connecting plates are fixedly connected to the right end of the vertical plate, the middle of the connecting plate is rotatably connected to the rotating shaft 2 and the rotating shaft 1, the bottom end of the rotating shaft 1 is rotatably connected to the top of the fixed plate, the top of the rotating shaft 2 is rotatably connected to the protective sleeve, the inner bottom end of the rotating shaft 1 is fixedly connected to the fixing rod, the inner bottom end of the rotating shaft 2 is fixedly connected to the outside of the fixing rod, the top ends of the fixing rod and the fixing tube are both located inside the protective sleeve, the top ends of the fixing rod and the fixing tube are fixedly connected to bevel gear 1 and bevel gear 2 respectively, the right end of the protective sleeve is rotatably connected to the knob, the left end of the knob is fixedly connected to the rotating shaft, and the left end of the rotating shaft is fixedly connected to bevel gear 3 inside the protective sleeve.

[0011] As a further description of the above technical solution: the left end of the bevel gear three is respectively meshed with the bottom right part of the bevel gear one and the top right part of the bevel gear two, and the fixed rod is rotatably connected to the rotating shaft two.

[0012] As a further description of the above technical solution: the middle part of the antifreeze cord is fixedly connected to the middle part of the sleeve, and the two ends of the antifreeze cord are respectively wrapped around the upper and lower ends of the outer side of the sleeve and the outer sides of the rotating shaft 2 and the rotating shaft 1.

[0013] As a further description of the above technical solution: a top light is fixedly connected to the middle part of the top end of the probe.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the present invention, the knob is rotated as needed to drive the bevel gear three to rotate, thereby causing the bevel gear one and the bevel gear two to drive the fixed rod and the fixed tube to rotate in opposite directions, thereby driving the rotating shaft one and the rotating shaft two to rotate in opposite directions in the middle of the sleeve, so that both ends of the antifreeze cord are unwound or reeled in at the same time, thereby adjusting the length of the antifreeze cord connecting the probe and the clip, preventing the antifreeze cord from being too long and inconvenient to organize and maintain, and reducing the risk of interference between the antifreeze cord and other components.

[0016] 2. In the present invention, the slider is moved toward the center of the mounting block at the same time. When the opposite side of the slider is in contact with the opposite side of the slide groove 1, the extrusion block drives the side of the clamping block 3 that is away from the side of the extrusion groove to be on the same horizontal line. Then the main probe is moved downward to facilitate the separation of the clamping block 1 from the clamping groove 1. By making the clamping block 1 engage with the clamping groove 1, the clamping block 2 engages with the clamping groove 2 on the same side, and the spring 2 drives the clamping block 3 to engage with the clamping groove 3 on the same side, the main probe and the probe pen are connected together, which facilitates the replacement of the main probe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a three-dimensional schematic diagram of the test light for automobile maintenance and inspection proposed by the present utility model;

[0018] Figure 2 This is a front cross-sectional exploded view of the mounting block and the first clamping block of the test light for automobile maintenance and inspection proposed in the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0020] Figure 4 This is a front plan view of the card block 1 and the main probe of the test light for automobile maintenance and inspection proposed by the utility model;

[0021] Figure 5 This is a front cross-sectional view of the shaft sleeve, rotating shaft 1 and rotating shaft 2 of the test light for automobile maintenance and inspection proposed in the utility model;

[0022] Figure 6 for Figure 5 Enlarged view of part B in the middle.

[0023] Legend:

[0024] 1. Probe; 2. Glass; 3. Connecting block; 4. LED light; 5. Ceiling light; 6. Mounting block; 7. Slot 1; 8. Slot 2; 9. Slot 3; 10. Fixed block; 11. Slide 1; 12. Slide 2; 13. T-shaped block; 14. Slider; 15. Spring 1; 16. Extrusion block; 17. Block 1; 18. Block 2; 19. Extrusion slot; 20. Spring 2; 21. Block 3; 22. Main probe; 23. Fixed plate; 24. Vertical plate; 25. Connecting plate; 26. Bushing; 27. Rotating shaft 1; 28. Rotating shaft 2; 29. ​​Fixed rod; 30. Fixed tube; 31. Bevel gear 1; 32. Bevel gear 2; 33. Protective cover; 34. Knob; 35. Rotating shaft; 36. Bevel gear 3; 37. Antifreeze cord; 38. Clip; 39. Auxiliary probe. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Reference Figure 1 、 Figure 2 and Figure 4The utility model provides an embodiment of a test light for automobile maintenance inspection, including a probe pen 1, a connecting block 3 is fixedly connected to the inside of the probe pen 1, two LED lights 4 are fixedly connected to the outside of the connecting block 3, one end of the outside of the connecting block 3 is fixedly connected to the glass 2, the bottom end of the probe pen 1 is provided with a loading and unloading assembly, the bottom end of the loading and unloading assembly is provided with a clamping block 17, the front and rear ends of the clamping block 17 are fixedly connected to the clamping block 2 18, the left and right ends of the clamping block 17 are provided with an extrusion groove 19, the opposite sides of the two extrusion grooves 19 are fixedly connected to the spring 20, and the farthest end of the spring 20 is fixed It is fixedly connected with a card block three 21, and the bottom end of the card block 17 is fixedly connected with the main probe 22. The card block 17 is engaged with the loading and unloading assembly. The loading and unloading assembly is used to fix the card block 17 and the main probe 22 to the bottom end of the probe pen 1. The right end of the probe pen 1 is provided with a fixing plate 23, and the left end of the fixing plate 23 is fixedly connected with a vertical plate 24. The top of the fixing plate 23 is provided with a sorting assembly. The top right side of the probe pen 1 is fixedly connected with an antifreeze cord 37, and the end of the antifreeze cord 37 is fixedly connected with a clip 38. The right bottom end of the clip 38 is fixedly connected with an auxiliary probe 39. The sorting assembly is used to sort the antifreeze cord 37.

[0027] The two connection blocks 3 are red and green lights respectively. When the green light is on, it means the circuit is through. When the red light is on, it means that the circuit is faulty. Insert the main probe 22 into the connection plug of the main electrical component, and then connect the auxiliary probe 39 to the metal part of the car body to form a complete circuit loop. The main probe 22 can be quickly replaced by loading and unloading components to adapt to the detection of different electrical components. The length of the antifreeze cord 37 connecting the probe pen 1 and the clip 38 can be adjusted as needed through the sorting component to prevent the antifreeze cord 37 from being too long and inconvenient to sort and maintain.

[0028] Reference Figure 2 、 Figure 3 and Figure 4The loading and unloading assembly includes a mounting block 6, the top of the mounting block 6 is fixedly connected to the bottom end of the probe 1, a card slot 7 is opened in the middle of the mounting block 6, and a card slot 2 8 is opened on both sides of the front and rear of the card slot 1 7 inside the mounting block 6, and a card slot 3 9 is opened on both sides of the left and right ends of the mounting block 6 on the left and right sides of the card slot 1 7. The middle and upper parts of the left and right sides of the mounting block 6 are fixedly connected with a fixed block 10, and the bottom ends of the two fixed blocks 10 are provided with a slide groove 11, and the top of the fixed block 10 is provided with a slide groove 2 12 on the top of the slide groove 11. The top of the fixed block 10 is provided with a T-shaped block 13, and the bottom of the T-shaped block 13 is fixedly connected with a slide Block 14, the middle and lower parts of the opposite ends of the slider 14 are fixedly connected with the extrusion block 16, the top of the opposite end of the slider 14 is fixedly connected with a spring 15, the opposite ends of the two springs 15 are respectively fixedly connected to the opposite ends of the slide 11, the clamping block 17 is engaged with the clamping slot 17, the two clamping blocks 2 18 are respectively engaged with the clamping slot 2 8 on the same side, and the two clamping blocks 3 21 are respectively engaged with the clamping slot 3 9 on the same side. The bottom ends of the T-shaped blocks 13 are slidably connected to the slide 2 12 on the same side, and the top ends of the sliders 14 are slidably connected to the slide 11 on the same side. The middle part of the extrusion block 16 and the middle part of the clamping slot 3 9 are located on the same horizontal line.

[0029] By aligning the card block 17 and the card block 2 18 with the card slot 1 7 and the card slot 2 8 on the same side respectively, and then moving the main probe 22 upward, the card block 17 is engaged with the card slot 1 7, and the card block 2 18 is engaged with the card slot 2 8 on the same side. At this time, the extrusion groove 19 is aligned with the card slot 3 9 on the same side, and the spring 20 drives the card block 3 21 to engage with the card slot 3 9 on the same side, thereby fixing the card block 17 inside the mounting block 6, so that the main probe 22 is connected to the probe pen 1. When the main probe 22 needs to be adjusted During replacement, the slider 14 is moved toward the center of the mounting block 6 at the same time, so that the extrusion block 16 squeezes the card slot three 9 on the same side toward the inner direction of the extrusion groove 19 on the same side. When the opposite side of the slider 14 is in contact with the opposite side of the slide groove 11, the extrusion block 16 makes the side away from the card block three 21 and the side away from the extrusion groove 19 be on the same horizontal line, and then the main probe 22 is moved downward to facilitate the separation of the card block 17 from the card slot 17, thereby completing the disassembly of the main probe 22.

[0030] Reference Figure 1 、 Figure 5 and Figure 6The finishing component includes a sleeve 26, the left end of the sleeve 26 is fixedly connected to two connecting plates 25, the left ends of the two connecting plates 25 are fixedly connected to the right end of the vertical plate 24, the middle part of the connecting plate 25 is rotatably connected to a rotating shaft 28 and a rotating shaft 1 27, the bottom end of the rotating shaft 1 27 is rotatably connected to the top of the fixed plate 23, the top of the rotating shaft 28 is rotatably connected to a protective sleeve 33, the inner bottom end of the rotating shaft 1 27 is fixedly connected to a fixing rod 29, the inner bottom end of the rotating shaft 28 is fixedly connected to a fixing tube 30 on the outside of the fixing rod 29, the top ends of the fixing rod 29 and the fixing tube 30 are both located inside the protective sleeve 33, and the top ends of the fixing rod 29 and the fixing tube 30 are respectively fixed It is fixedly connected with bevel gear 1 31 and bevel gear 2 32, the right end of the protective cover 33 is rotatably connected with the knob 34, the left end of the knob 34 is fixedly connected with the rotating shaft 35, the left end of the rotating shaft 35 is fixedly connected with bevel gear 36 inside the protective cover 33, the left ends of bevel gear 36 are respectively meshed with the right bottom end of bevel gear 1 31 and the right top end of bevel gear 2 32, the fixed rod 29 is rotatably connected with the rotating shaft 2 28, the middle part of the antifreeze wire 37 is fixedly connected with the middle part of the sleeve 26, the two ends of the antifreeze wire 37 are respectively wrapped around the upper and lower ends of the outer side of the sleeve 26 and the outer sides of the rotating shaft 2 28 and the rotating shaft 1 27, and the top middle part of the probe pen 1 is fixedly connected with the ceiling light 5.

[0031] When in use, the back side of the protective cover 33 is attached to the front side of an object to prevent the protective cover 33 from rotating when the rotating shaft 28 rotates. By rotating the knob 34, the rotating shaft 35 and the bevel gear 36 are rotated, so that the bevel gear 1 31 and the bevel gear 2 32 rotate in opposite directions. Since the bevel gear 1 31 and the bevel gear 2 32 are fixedly connected to the fixing rod 29 and the fixing tube 30 respectively, the fixing rod 29 and the fixing tube 30 rotate in opposite directions, thereby driving the rotating shaft 1 27 and the rotating shaft 2 28 to rotate in opposite directions, so that the two ends of the antifreeze cord 37 around the outside of the rotating shaft 1 27 and the rotating shaft 2 28 are synchronously unwound or reeled, making it easy to adjust the length of the antifreeze cord 37 connecting the probe pen 1 and the clip 38, preventing the antifreeze cord 37 from being too long and inconvenient to organize and maintain, and at the same time reducing the risk of interference between the antifreeze cord 37 and other components. The top light 5 can illuminate the detection range of the main probe 22 to prevent dark light from affecting the detection.

[0032] Working principle: Insert the main probe 22 into the connection plug of the main electrical component, then rotate the knob 34 as needed to make the rotating shaft 1 27 and the rotating shaft 2 28 rotate in opposite directions in the middle of the shaft sleeve 26, driving the two ends of the antifreeze soft wire 37 to unwind or rewind at the same time, thereby adjusting the maximum distance between the main probe 22 and the auxiliary probe 39, and then connect the auxiliary probe 39 to the metal part of the car body to form a complete circuit loop. When it is necessary to detect electrical components on different sides, by moving the sliders 14 on both sides toward the center of the mounting block 6 at the same time, the two extrusion blocks 16 will drive the same-side block 3 21 to the block 1 17 The main probe 22 is then moved downward, and the main probe 22 can be removed from the mounting block 6. The block 17 of the appropriate sleeve 26 is then inserted into the card slot 7. The spring 20 drives the block 3 21 to engage with the card slot 3 9 on the same side, thereby completing the installation of the main probe 22. When the antifreeze cord 37 is too long, the knob 34 is rotated to reel in the two ends of the antifreeze cord 37 by rotating the rotating shaft 28 and the rotating shaft 1 27.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A test light for automobile maintenance and inspection, comprising a probe pen (1), characterized in that: The interior of the probe (1) is fixedly connected with a connecting block (3), the outer side of the connecting block (3) is fixedly connected with two LED lights (4), one end of the outer side of the connecting block (3) is fixedly connected with a glass (2), the bottom end of the probe (1) is provided with a loading and unloading assembly, the bottom end of the loading and unloading assembly is provided with a card block 1 (17), the front and rear ends of the card block 1 (17) are fixedly connected with a card block 2 (18), the left and right ends of the card block 1 (17) are provided with an extrusion groove (19), the opposite side of the two extrusion grooves (19) are fixedly connected with a spring 2 (20), the far end of the spring 2 (20) is fixedly connected with a card block 3 (21), the card block 1 (17) is fixedly connected with a card block 2 (21), and the left and right ends of the card block 1 (17) are fixedly connected with a card block 2 (21). ) is fixedly connected to the bottom end of the probe (1) with a main probe (22), the card block (17) is engaged with the assembly and disassembly assembly, the assembly and disassembly assembly is used to fix the card block (17) and the main probe (22) to the bottom end of the probe (1), the right end of the probe (1) is provided with a fixing plate (23), the left end of the fixing plate (23) is fixedly connected to a vertical plate (24), the top of the fixing plate (23) is provided with a tidying assembly, the top right side of the probe (1) is fixedly connected to an antifreeze cord (37), the end of the antifreeze cord (37) is fixedly connected to a clip (38), the bottom right part of the clip (38) is fixedly connected to an auxiliary probe (39), and the tidying assembly is used to tidy the antifreeze cord (37).

2. The test light for automobile maintenance and inspection according to claim 1, characterized in that: The assembly and disassembly assembly comprises a mounting block (6), the top of the mounting block (6) is fixedly connected to the bottom of the probe (1), a first card slot (7) is provided in the middle of the mounting block (6), a second card slot (8) is provided inside the mounting block (6) on both the front and rear sides of the first card slot (7), a third card slot (9) is provided on both the left and right ends of the mounting block (6) on both the left and right sides of the first card slot (7), a fixed block (10) is fixedly connected to the middle and upper parts of the left and right sides of the mounting block (6), and a slide groove (1) is provided at the bottom ends of the two fixed blocks (10). 11), the top of the fixed block (10) is provided with a slide groove 2 (12) at the top of the slide groove 1 (11), the top of the fixed block (10) is provided with a T-shaped block (13), the bottom of the T-shaped block (13) is fixedly connected with a slider (14), the middle and lower parts of the opposite ends of the slider (14) are fixedly connected with an extrusion block (16), the top of the opposite end of the slider (14) is fixedly connected with a spring 1 (15), and the opposite ends of the two springs 1 (15) are fixedly connected to the opposite ends of the slide groove 1 (11) respectively.

3. The test light for automobile maintenance and inspection according to claim 2, characterized in that: The card block 1 (17) is connected to the card slot 1 (7) by snapping, the two card blocks 2 (18) are connected to the card slot 2 (8) on the same side respectively, and the two card blocks 3 (21) are connected to the card slot 3 (9) on the same side respectively.

4. The test light for automobile maintenance and inspection according to claim 2, characterized in that: The bottom ends of the T-shaped blocks (13) are slidably connected to the second slide groove (12) on the same side, the top ends of the sliders (14) are slidably connected to the first slide groove (11) on the same side, and the middle of the extrusion block (16) and the middle of the third slot (9) are located on the same horizontal line.

5. The test light for automobile maintenance and inspection according to claim 1, characterized in that: The arranging assembly includes a shaft sleeve (26), the left end of the shaft sleeve (26) is fixedly connected to two connecting plates (25), the left ends of the two connecting plates (25) are fixedly connected to the right end of the vertical plate (24), the middle part of the connecting plate (25) is rotatably connected to a second rotating shaft (28) and a first rotating shaft (27), the bottom end of the first rotating shaft (27) is rotatably connected to the top end of the fixed plate (23), the top end of the second rotating shaft (28) is rotatably connected to a protective sleeve (33), the inner bottom end of the first rotating shaft (27) is fixedly connected to a fixed rod (29), the rotating shaft The inner bottom end of the second gear (28) is fixedly connected to a fixed tube (30) on the outer side of the fixed rod (29); the top ends of the fixed rod (29) and the fixed tube (30) are both located inside the protective sleeve (33); the top ends of the fixed rod (29) and the fixed tube (30) are fixedly connected to a bevel gear 1 (31) and a bevel gear 2 (32), respectively; the right end of the protective sleeve (33) is rotatably connected to a knob (34); the left end of the knob (34) is fixedly connected to a rotating shaft (35); the left end of the rotating shaft (35) is fixedly connected to a bevel gear 3 (36) inside the protective sleeve (33).

6. The test light for automobile maintenance and inspection according to claim 5, characterized in that: The left end of the bevel gear three (36) is meshed with the right bottom portion of the bevel gear one (31) and the right top portion of the bevel gear two (32) respectively, and the fixed rod (29) is rotationally connected to the rotating shaft two (28).

7. The test light for automobile maintenance and inspection according to claim 2, characterized in that: The middle part of the antifreeze cord (37) is fixedly connected to the middle part of the shaft sleeve (26), and the two ends of the antifreeze cord (37) are respectively wound around the upper and lower ends of the outer side of the shaft sleeve (26) and the outer sides of the second rotating shaft (28) and the first rotating shaft (27).

8. The test light for automobile maintenance and inspection according to claim 1, characterized in that: A top light (5) is fixedly connected to the middle portion of the top end of the probe (1).

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