Foldable portable detection instrument for automobile circuit short circuit troubleshooting

Abstract

The application discloses a foldable automobile circuit short-circuit troubleshooting portable detector and belongs to the field of short-circuit detectors. The detector comprises a detector body, the bottom of the detector body is fixedly connected with a concave part, the inside of the concave part is rotationally connected with a folding probe rod one through a rotating shaft, the left end of the folding probe rod one is rotationally connected with a folding probe rod two through a rotating shaft, the inside of the folding probe rod two is slidably connected with a retractable probe rod, the top end of the retractable probe rod is fixedly connected with a concave box, the inside of the concave box is rotationally connected with a bidirectional screw rod through a rotating shaft, and the outer side wall of the bidirectional screw rod is threadedly connected with two detection clamps. In view of the problem that the existing detector probe rods in the prior art are mostly fixed-length rigid structures or only support limited telescopic extension and cannot be folded and stored in multiple sections, the device is designed with multiple-section folding probe rods, cooperates with a positioning disc, a pushing piece, a positioning rod and a spring linkage structure, and realizes flexible folding and angle fixing of the probe rod.

Description

Technical Field

[0001] This invention relates to short circuit detectors, and more particularly to a foldable portable detector for troubleshooting short circuits in automotive circuits. Background Technology

[0002] In the field of automotive repair and maintenance, the electrical system, as the "nerve center" of a car, directly determines the overall performance and driving safety of the vehicle through its operational stability. With the continuous improvement of automotive electronics, electrical networks are becoming increasingly complex, with more wiring harnesses and denser layouts, significantly increasing the difficulty of troubleshooting short circuits. Against this backdrop, automotive short circuit diagnostic tools have become indispensable core tools for repair personnel, as their portability, operational flexibility, and testing efficiency directly affect the timeliness and accuracy of fault diagnosis.

[0003] Currently available automotive circuit short-circuit troubleshooting devices generally suffer from two major design flaws that severely restrict the convenience and efficiency of repair work. Firstly, the testing probe is not easily foldable. Existing devices typically use rigid, fixed-length probes or only support limited extension / retraction, making multi-section folding for storage impossible.

[0004] Secondly, the test clips are not convenient for remote control. Most existing testers use a manual clamping design, meaning technicians must hold the clip close to the test point and fix it to the wiring harness by pressing with their fingers or adjusting with a knob. However, in automotive electrical systems, some short-circuit faults are often located in deep cavities, hidden gaps, or obscured by other components, making it difficult for technicians to directly reach in. In such cases, auxiliary tools (such as tweezers or extension rods) are needed to indirectly operate the test clips.

[0005] To address the above issues, we propose a foldable portable tester for troubleshooting short circuits in automotive circuits. Summary of the Invention

[0006] Purpose of the Invention: The purpose of this invention is to provide a portable automotive circuit short-circuit troubleshooting device with a foldable probe, solving the problem that existing detectors often have fixed-length rigid probes or only support limited travel extension and adjustment, making multi-segment folding and storage impossible. This reduces the overall size of the detector, improves portability, and allows the probe to be flexibly adjusted in angle and length to adapt to the testing needs of confined and complex spaces such as the engine compartment and under the chassis, reducing operational difficulty. Another purpose of this invention is to provide a portable automotive circuit short-circuit troubleshooting device equipped with a remotely controlled testing clip, solving the problem that existing detectors require manual operation of the testing clip, making it difficult for repair personnel to reach deep cavities, hidden gaps, or locations obscured by parts. This device allows for remote clamping and fixation of the testing clip without the need for tweezers, extension rods, or other auxiliary tools, avoiding the problem of uncontrolled clamping force caused by auxiliary tools, and improving the detection efficiency and operational safety of hidden fault points.

[0007] Technical Solution: A foldable portable automotive circuit short circuit troubleshooting tester includes a tester body. A concave component is fixedly connected to the bottom of the tester body. A folding probe one is rotatably connected inside the concave component via a rotating shaft. A folding probe two is rotatably connected to the left end of the folding probe one via a rotating shaft. A retractable probe is slidably connected inside the folding probe two. A concave box is fixedly connected to the top end of the retractable probe. A bidirectional lead screw is rotatably connected inside the concave box via a rotating shaft. Two test clips are threaded to the outer side wall of the bidirectional lead screw.

[0008] A gear is fixedly connected to the left end of the bidirectional lead screw;

[0009] A fixed ring is fixedly connected to the outer wall of the retractable probe, and a movable ring is slidably connected above the fixed ring. An elastic airbag is fixedly connected between the fixed ring and the movable ring. A rack is fixedly connected to the top of the movable ring, and the rack meshes with the gear.

[0010] Furthermore, both the front surface of the concave component and the front surface of the folded probe are fixed with positioning discs, and positioning opening one and positioning opening two are respectively opened below the outer side wall and at the opposite position of the outer side wall of the two positioning discs.

[0011] Furthermore, a shrink box is fixedly connected to the front surface of the folding probe, and two actuating plates are slidably connected inside the shrink box. A spring is fixedly connected between the two actuating plates. Positioning rods are fixedly connected to the opposite sides of the two actuating plates, and the opposite ends of the two positioning rods are respectively inserted into the interior of the two positioning ports.

[0012] Furthermore, an L-shaped plate is fixedly connected to the front surface of the second folding probe, and a plug rod is provided in front of the L-shaped plate. The rear end of the plug rod extends into the interior of the second folding probe, and a spring is fixedly connected between the outer wall of the plug rod and the L-shaped plate.

[0013] Furthermore, the outer side wall of the retractable probe is provided with multiple insertion holes, which are adapted to the insertion rod.

[0014] Furthermore, a storage tray is fixedly connected to the left side of the second folding probe. An air cylinder is rotatably connected inside the storage tray via a rotating shaft. A piston block is slidably connected inside the air cylinder. A compression rod is fixedly connected to the left side of the piston block. The left end of the compression rod extends through to the left side of the storage tray and is slidably connected to the storage tray.

[0015] Furthermore, a vent pipe is fixedly connected to the outer wall of the air cylinder, and one end of the vent pipe away from the air cylinder extends to the outside of the storage tray and is fixedly connected to the bottom of the elastic airbag.

[0016] Furthermore, a gear two is fixedly connected to the right side of the air cylinder inside the folding probe two.

[0017] Furthermore, a vertical groove is provided on the left side of the outer wall of the retractable probe, and a toothed groove is integrally formed inside the vertical groove, which meshes with the gear.

[0018] Beneficial effects: In view of the problem that existing detector probes in the background technology are mostly rigid structures with fixed lengths or only support limited extension and cannot be folded and stored in multiple sections, this device achieves flexible folding and angle fixation of the probe by using a multi-section folding probe design, combined with the linkage structure of positioning disc, toggle plate, positioning rod and spring.

[0019] On the one hand, when storing, the folding probe can be adjusted to be vertical or perpendicular to the main body of the detector, greatly reducing the overall size of the device and making it easier for maintenance personnel to carry to different maintenance scenarios. On the other hand, when in use, the probe angle and folding state can be freely adjusted according to the testing needs of small and complex spaces such as engine compartments and under chassis, without the need for additional disassembly or assembly of parts, reducing operation preparation time and improving both portability and on-site operation convenience, perfectly matching the invention's purpose of "reducing the overall size of the detector and improving portability".

[0020] Considering the practical need for automotive circuit faults to be located at varying depths, this device adds a sliding retractable probe to the existing folding probe. Through a combination of a connecting rod, spring, and multiple sets of connecting holes, the probe length can be precisely adjusted and stably fixed. Maintenance personnel simply pull the connecting rod to release the length lock, slide the probe to the desired length, and release it to complete the fixation – a simple and efficient operation. Compared to existing probes that only support limited travel, this device can adapt to multi-depth testing needs, from shallow surfaces to deep cavities, without the need for extension rods or other auxiliary tools. This avoids the cumbersome operation associated with auxiliary tools and further reduces the difficulty of operation in confined spaces, achieving the invention's goal of "allowing the probe to flexibly adjust its length to adapt to complex spatial testing needs."

[0021] Addressing the shortcomings of existing detectors where the clamps require manual operation and are difficult to insert into deep cavities or hidden gaps, this device innovatively designs a gas-driven remote-controlled detector clamp structure. Through the linkage of a squeezing rod, inflation cylinder, air tube, and elastic air bladder, manual thrust is converted into gas pressure, driving the moving ring and rack. Then, through the meshing of gears and a bidirectional lead screw, the detector clamp can be remotely clamped and released. This design allows maintenance personnel to precisely fix the detector clamp without extending their arms or auxiliary tools into confined spaces. It not only avoids the problem of uncontrolled clamping force caused by tweezers, extension rods, and other auxiliary tools, but also significantly reduces the risk of component collisions due to limited operating space. This significantly improves the detection efficiency and operational safety of hidden fault points, fully meeting the core requirements of the invention: "solving the problem of manual operation and improving detection efficiency and safety."

[0022] While fulfilling its various functions, this device emphasizes the coordinated operation of its structures. For example, when adjusting the length of the sliding retractable probe, the meshing of the toothed groove and gear drives the air cylinder to rotate synchronously, causing the vent pipe to retract and extend in sync with the probe movement, effectively preventing damage caused by entanglement or pulling of the vent pipe. Simultaneously, the multiple positioning ports on the positioning disc ensure stable locking of the probe at different folding angles, while the spring structure's reset function ensures convenient resetting of each operating component. These detailed design features enhance the overall structural stability and service life of the device, reduce testing interruptions due to component failures during maintenance, and further strengthen the device's practical value. Attached Figure Description

[0023] Figure 1 This is a front view structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the connection structure of the concave component, folded probe one, and folded probe two of the present invention.

[0025] Figure 3This is a side view schematic diagram of the connection structure between the folding probe rod II and the retractable probe rod of the present invention;

[0026] Figure 4 This is a side view of the retractable probe of the present invention;

[0027] Figure 5 This is a schematic diagram of the connection structure between the concave box and the detection clip of the present invention;

[0028] Figure 6 This is a side view schematic diagram of the connection structure of the rack, vent pipe and storage tray of the present invention;

[0029] Figure 7 This is a schematic diagram of the internal structure of the storage tray of the present invention.

[0030] In the diagram: 1. Detector body; 2. Concave part; 3. Folding probe rod one; 4. Folding probe rod two; 5. Retractable probe rod; 6. Concave box; 7. Bidirectional lead screw; 8. Detection clamp; 9. Gear one; 10. Fixed ring; 11. Moving ring; 12. Elastic airbag; 13. Rack; 14. Positioning disc; 15. Positioning port one; 16. Positioning port two; 17. Retractable box; 18. Actuating piece; 19. Spring one; 20. Positioning rod; 21. Insertion rod; 22. Spring two; 23. Insertion hole; 24. Storage tray; 25. Inflation cylinder; 26. Piston block; 27. Extrusion rod; 28. Vent pipe; 29. ​​Gear two; 30. Vertical groove; 31. Gear groove; 32. L-shaped plate. Detailed Implementation

[0031] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example

[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a foldable portable automotive circuit short circuit troubleshooting tester is provided, including a tester body 1. A concave part 2 is fixedly connected to the bottom of the tester body 1. A folding probe 3 is rotatably connected inside the concave part 2 via a rotating shaft. A folding probe 4 is rotatably connected to the left end of the folding probe 3 via a rotating shaft. A retractable probe 5 is slidably connected inside the folding probe 4. A concave box 6 is fixedly connected to the top end of the retractable probe 5. A bidirectional lead screw 7 is rotatably connected inside the concave box 6 via a rotating shaft. Two test clips 8 are threadedly connected to the outer side wall of the bidirectional lead screw 7.

[0034] Positioning discs 14 are fixed on the front surface of the concave part 2 and the front surface of the folding probe 2 4. Positioning openings 15 and 16 are respectively opened on the lower side of the outer side wall and at the opposite side of the outer side wall of the two positioning discs 14.

[0035] A shrink box 17 is fixedly connected to the front surface of the folding probe 3. Two actuating pieces 18 are slidably connected inside the shrink box 17. A spring 19 is fixedly connected between the two actuating pieces 18. Positioning rods 20 are fixedly connected to the opposite sides of the two actuating pieces 18. The opposite ends of the two positioning rods 20 are respectively inserted into the inside of the two positioning ports 16.

[0036] An L-shaped plate 32 is fixedly connected to the front surface of the folding probe 4. A plug-in rod 21 is provided in front of the L-shaped plate 32. The rear end of the plug-in rod 21 extends into the interior of the folding probe 4. A spring 22 is fixedly connected between the outer wall of the plug-in rod 21 and the L-shaped plate 32.

[0037] Multiple insertion holes 23 are provided on the front of the outer side wall of the retractable probe 5, and the insertion holes 23 are adapted to the insertion rod 21;

[0038] When it is necessary to fold and store the detector or adjust the probe angle to fit into narrow spaces such as the engine compartment or under the chassis, first press the two actuating pieces 18 inwards. The actuating pieces 18 slide in the shrink box 17 and compress the spring 19. At the same time, the positioning rod 20 is disengaged from the positioning port 16 of the positioning disc 14, releasing the angle lock between the folding probe 3 and the concave part 2, and between the folding probe 3 and the folding probe 4. Then rotate the folding probe 3 or the folding probe 4 around the corresponding pivot, or rotate the folding probe 3 and the folding probe 4 at the same time, so that one or both of the two positioning rods 20 are inserted into one or both positioning ports 15, completing the angle adjustment of the folding probe 3 and the folding probe 4, adjusting them so that the detector body 1 is vertical or perpendicular.

[0039] When the overall length of the probe needs to be adjusted, pull the plug rod 21 outward. The plug rod 21 stretches the second spring 22 and is pulled out from the plug hole 23 of the retractable probe 5, releasing the length lock between the retractable probe 5 and the second foldable probe 4. Slide the retractable probe 5 along the axial direction of the second foldable probe 4 until the total length of the probe meets the detection distance requirement. Release the plug rod 21, and the second spring 22 returns to its original position, pulling the plug rod 21 into the corresponding plug hole 23, thus fixing the length of the retractable probe 5 to adapt to detection points of different depths.

[0040] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a gear 9 is fixedly connected to the left end of the bidirectional lead screw 7;

[0041] A fixed ring 10 is fixedly connected to the outer wall of the retractable probe 5. A movable ring 11 is slidably connected above the fixed ring 10. An elastic airbag 12 is fixedly connected between the fixed ring 10 and the movable ring 11. A rack 13 is fixedly connected to the top of the movable ring 11. The rack 13 is meshed with a gear 9.

[0042] A storage tray 24 is fixedly connected to the left side of the folding probe 24. An air cylinder 25 is rotatably connected inside the storage tray 24 via a rotating shaft. A piston block 26 is slidably connected inside the air cylinder 25. A compression rod 27 is fixedly connected to the left side of the piston block 26. The left end of the compression rod 27 extends through to the left side of the storage tray 24 and is slidably connected to the storage tray 24.

[0043] An air pipe 28 is fixedly connected to the outer wall of the air cylinder 25. The end of the air pipe 28 away from the air cylinder 25 extends to the outside of the storage tray 24 and is fixedly connected to the bottom of the elastic airbag 12.

[0044] Gear 29 is fixedly connected to the right side of the air cylinder 25 inside the folding probe 2 4;

[0045] A vertical groove 30 is provided on the left side of the outer wall of the retractable probe 5. The interior of the vertical groove 30 is integrally formed with a toothed groove 31, which meshes with the gear 29.

[0046] When it is necessary to remotely clamp the wire harness in a deep cavity or concealed location, push the squeezing rod 27 to the right. The squeezing rod 27 drives the piston block 26 to slide inside the air cylinder 25, and the gas in the air cylinder 25 is forced into the elastic airbag 12 through the vent pipe 28. After the elastic airbag 12 is inflated, it pushes the movable ring 11 to slide upward along the fixed ring 10. The movable ring 11 drives the rack 13 to move upward synchronously. Since the rack 13 meshes with the gear 9, the movement of the rack 13 drives the gear 9 to rotate, which in turn drives the bidirectional lead screw 7 to rotate inside the concave box 6. The bidirectional lead screw 7 drives the two detection clamps 8 on the outer wall to move closer to each other through the threaded transmission, so as to clamp and fix the wire harness at the detection point without the need for manual operation in a narrow space.

[0047] When the length of the sliding retractable probe 5 is adjusted, the toothed groove 31 of the retractable probe 5 moves synchronously. Since the toothed groove 31 meshes with the gear 29, the toothed groove 31 drives the gear 29 to rotate. The gear 29 then drives the air cylinder 25 to rotate around its axis with the storage tray 24, so that the vent pipe 28 moves synchronously with the movement of the retractable probe 5, avoiding the vent pipe 28 from getting tangled or pulled. When the test is completed and the wire harness needs to be loosened, the squeezing rod 27 is pulled to the left, and the piston block 26 slides in the opposite direction to generate negative pressure in the air cylinder 25. The gas in the elastic airbag 12 flows back through the vent pipe 28. The movable ring 11 and the rack 13 reset and drive the gear 9 and the bidirectional lead screw 7 to rotate in the opposite direction. The two test clamps 8 move away from each other to complete the loosening of the wire harness.

[0048] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A foldable portable automotive circuit short-circuit troubleshooting tester, comprising a tester body (1), characterized in that: The bottom of the detector body (1) is fixedly connected to a concave part (2). The inside of the concave part (2) is rotatably connected to a folding probe rod one (3) via a rotating shaft. The left end of the folding probe rod one (3) is rotatably connected to a folding probe rod two (4) via a rotating shaft. The inside of the folding probe rod two (4) is slidably connected to a shrinking probe rod (5). The top end of the shrinking probe rod (5) is fixedly connected to a concave box (6). The inside of the concave box (6) is rotatably connected to a bidirectional lead screw (7) via a rotating shaft. The outer side wall of the bidirectional lead screw (7) is threaded with two detection clips (8). The left end of the bidirectional lead screw (7) is fixedly connected to a gear (9); A fixed ring (10) is fixedly connected to the outer wall of the retractable probe (5), and a movable ring (11) is slidably connected above the fixed ring (10). An elastic airbag (12) is fixedly connected between the fixed ring (10) and the movable ring (11). A rack (13) is fixedly connected to the top of the movable ring (11), and the rack (13) meshes with the gear (9).

2. The foldable portable automotive circuit short-circuit troubleshooting device according to claim 1, characterized in that: The front surface of the concave part (2) and the front surface of the folded probe (4) are both fixed with positioning discs (14). Positioning openings one (15) and two (16) are respectively opened below the outer side wall and at the opposite position of the outer side wall of the two positioning discs (14).

3. The foldable portable automotive circuit short-circuit troubleshooting device according to claim 2, characterized in that: The front surface of the folding probe (3) is fixedly connected to a shrink box (17). The shrink box (17) has two sliding actuating pieces (18) inside. A spring (19) is fixedly connected between the two actuating pieces (18). Positioning rods (20) are fixedly connected to the opposite sides of the two actuating pieces (18). The opposite ends of the two positioning rods (20) are respectively inserted into the interior of the two positioning ports (16).

4. The foldable portable automotive circuit short-circuit troubleshooting tester according to claim 1, characterized in that: An L-shaped plate (32) is fixedly connected to the front surface of the second folding probe (4). A plug-in rod (21) is provided in front of the L-shaped plate (32). The rear end of the plug-in rod (21) extends into the interior of the second folding probe (4). A spring (22) is fixedly connected between the outer wall of the plug-in rod (21) and the L-shaped plate (32).

5. A foldable portable automotive circuit short-circuit troubleshooting device according to claim 4, characterized in that: The outer side wall of the retractable probe (5) is provided with a plurality of insertion holes (23), which are adapted to the insertion rod (21).

6. A foldable portable automotive circuit short-circuit troubleshooting device according to claim 1, characterized in that: A storage tray (24) is fixedly connected to the left side of the folding probe (4). An air cylinder (25) is rotatably connected inside the storage tray (24) via a rotating shaft. A piston block (26) is slidably connected inside the air cylinder (25). A compression rod (27) is fixedly connected to the left side of the piston block (26). The left end of the compression rod (27) extends through to the left side of the storage tray (24) and is slidably connected to the storage tray (24).

7. A foldable portable automotive circuit short-circuit troubleshooting device according to claim 6, characterized in that: The outer wall of the inflator (25) is fixedly connected to a vent pipe (28), and one end of the vent pipe (28) away from the inflator (25) extends to the outside of the storage tray (24) and is fixedly connected to the bottom of the elastic airbag (12).

8. A foldable portable automotive circuit short-circuit troubleshooting device according to claim 6, characterized in that: Gear 2 (29) is fixedly connected to the right side of the air cylinder (25) inside the folding probe 2 (4).

9. A foldable portable automotive circuit short-circuit troubleshooting device according to claim 8, characterized in that: The outer side wall of the retractable probe (5) has a vertical groove (30) on the left side. The vertical groove (30) has an integrally formed toothed groove (31) inside. The toothed groove (31) meshes with the gear (29).

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