Portable fault diagnosis electrical instrument

Abstract

The application relates to the technical field of electrical instruments and discloses a portable fault diagnosis electrical instrument, which comprises a box body, an instrument main body fixedly connected in the box body, a box cover rotatably connected to the outer surface of the box body, a top rib plate fixedly connected to the outer surface of the box cover, a bottom rib plate fixedly connected to the outer surface of the box body, a buckle rotatably connected to the outer surface of the box body, a portable mechanism and a plane mechanism fixedly connected to the outer surface of the box cover, and a lock catch mechanism fixedly connected to the lower surface of the bottom rib plate. The portable mechanism can flexibly adjust the position of a rotating handrail, and the closed box body is prevented from shaking. The portable mechanism can accurately adjust the position and height of the handrail, and the stability and controllability are improved. The plane mechanism makes the box cover into an additional working surface, and adjusts the supporting position following the portable mechanism. The lock catch mechanism locks the box cover, adapts to different supporting surfaces, and guarantees the stable operation of the instrument.

Description

Technical Field

[0001] This invention relates to the field of electrical instruments and meters technology, specifically to portable fault diagnosis electrical instruments and meters. Background Technology

[0002] As the scale of modern power systems continues to expand, their coverage extends from dense urban power grids to transmission lines in remote areas, and the number and complexity of electrical equipment are also constantly increasing. Portable fault diagnosis electrical instruments and meters, as powerful assistants for power operation and maintenance personnel, can quickly and accurately detect the operating status of electrical equipment on-site and promptly identify potential fault hazards. Therefore, they play an irreplaceable role in the fields of power system operation and maintenance, and electrical equipment repair.

[0003] Patent application CN202221679907.1 discloses a portable electrical instrument, including an instrument body, an instrument panel and a display panel fixedly installed on the top of the instrument body, two connecting plates fixedly connected to one outer wall of the instrument body, a lifting handle fixedly connected between the outer walls of one side of the two connecting plates, and a storage chamber opened inside the instrument body, with a storage mechanism slidably connected between the inner walls of the two sides of the storage chamber.

[0004] However, this patent also has the following shortcomings: traditional portable fault diagnosis electrical instruments and meters have a single carrying method, with only a fixed handle. In narrow spaces or long-distance transportation, it is difficult to adjust the grip position, making operation inconvenient and tiring; on-site operation lacks an additional working surface, and the support structure cannot adapt to complex terrain, which limits the scope of use and efficiency. In view of this situation, a portable fault diagnosis electrical instrument and meter is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide portable electrical fault diagnosis instruments to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a portable fault diagnosis electrical instrument, comprising a housing, an instrument body fixedly connected inside the housing, a housing cover rotatably connected to the outer surface of the housing, a top rib fixedly connected to the outer surface of the housing cover, a bottom rib fixedly connected to the outer surface of the housing, a buckle rotatably connected to the outer surface of the housing, a portable mechanism and a planar mechanism fixedly connected to the outer surface of the housing cover, and a locking mechanism fixedly connected to the lower surface of the bottom rib. The portable mechanism includes:

[0007] The inclined roller has a grooved column fixedly connected to its outer surface, a first spring fixedly connected to the inner surface of the grooved column, a top plate retaining post fixedly connected to the outer surface of the first spring, and a slotted sliding rod engaged on the outer surface of the top plate retaining post. The outer surface of the box cover has a retaining rib plate one fixedly connected to it, and the outer surface of the box body has a retaining rib plate two fixedly connected to it. The retaining rib plate one has a through hole inside, and the top plate retaining post is used to fix the slotted sliding rod.

[0008] According to the above technical solution, the portable mechanism further includes a first rotating bend plate, which is rotatably connected to a slotted sliding rod. A first rotating rod is rotatably connected inside the first rotating bend plate, and a second rotating bend plate is rotatably connected to the outer surface of the first rotating rod. A rotating handle is rotatably connected to the outer surface of the first rotating rod, and the rotating handle is used to pull the instrument body.

[0009] According to the above technical solution, the buckle is engaged with the outer surface of the box cover, the inclined roller is slidably connected to the top rib plate, the first slot column is slidably connected to the top plate buckle column, the slot sliding rod is slidably connected to the first slot rib plate, the outer surface of the first slot rib plate is in contact with the outer surface of the second slot rib plate, the slot sliding rod is slidably connected to the second slot rib plate, and the first and second slot rib plates are used to adjust the slot sliding rod.

[0010] According to the above technical solution, the outer surface of the first rotating bending plate is in contact with the outer surface of the first slot rib plate, the outer surface of the second rotating bending plate is in contact with the outer surface of the first rotating bending plate, the outer surface of the rotating handrail is in contact with the outer surface of the second rotating bending plate, and the slot sliding rod is used to drive the rotating handrail.

[0011] According to the above technical solution, the planar mechanism includes a slotted column, the outer surface of which is fixedly connected to the upper surface of the box cover. A first locking block is engaged inside the slotted column, and a second slotted column is fixedly connected to the upper surface of the first locking block. A threaded column is threaded inside the second slotted column, a rotating plate is fixedly connected to the outer surface of the threaded column, and an arc-shaped frame is rotatably connected to the outer surface of the threaded column. A first sliding rod is fixedly connected to the outer surface of the second slotted column, a through-hole connecting block is fixedly connected to the outer surface of the first rotating rod, and a telescopic baffle is fixedly connected to the outer surface of the first locking block. The first sliding rod is used to push the arc-shaped frame.

[0012] According to the above technical solution, the outer surface of the slot column is in contact with the outer surfaces of the top rib plate and the bottom rib plate, the through hole connecting block is slidably connected to the first sliding rod, the outer surface of the telescopic baffle is fixedly connected to the outer surface of the slot column, and the telescopic baffle is used to protect the slot column.

[0013] According to the above technical solution, the locking mechanism includes a second sliding rod, a push plate and a locking plate are fixedly connected to the outer surface of the second sliding rod, the locking plate is engaged with the outer surface of the bottom rib plate, a second spring is fixedly connected to the outer surface of the locking plate, a through-hole locking block is fixedly connected to the outer surface of the second spring, a sliding plate is engaged inside the bottom rib plate, a rubber spring is fixedly connected to the outer surface of the sliding plate, and a grooved column three is fixedly connected to the outer surface of the arc-shaped frame, the grooved column three being used to fix the second sliding rod.

[0014] According to the above technical solution, the through hole block is slidably connected to the second sliding rod, the groove column three is engaged with the second sliding rod, the outer surface of the rubber spring is fixedly connected to the outer surface of the bottom rib plate, and the rubber spring is used to pull the sliding plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This portable electrical fault diagnosis instrument features a portable mechanism that allows for flexible adjustment of the rotating handle. Whether pulled horizontally or vertically or at an angle in special scenarios, it can easily adapt to different portability needs. It also has a unique function that acts on the opening and closing points of the housing during the pulling process, ensuring a tight seal and effectively preventing damage to the instrument due to shaking. This comprehensively guarantees the safety and ease of use of the instrument.

[0017] 2. This portable electrical fault diagnosis instrument features a convenient mechanism that allows for precise adjustment of the position of the rotating handle. It can easily adjust the horizontal position (forward / backward, left / right) and also flexibly adjust the height of the handle. Lowering the handle lowers the instrument's center of gravity, significantly improving stability and operability when carried, providing users with a smoother and safer operating experience.

[0018] 3. This portable fault diagnosis electrical instrument features a planar mechanism. When the workspace needs to be expanded, the cover can be positioned in a parallel position using this mechanism, providing an additional and practical working surface for the instrument. In conjunction with the portable mechanism, the cover can move with the portable mechanism, allowing for easy and flexible adjustment of the support position in different indoor workstations or complex outdoor locations, greatly improving the convenience and adaptability of the instrument.

[0019] 4. This portable fault diagnosis electrical instrument features a locking mechanism. When the cover is smoothly rotated to a parallel position using the relevant planar mechanism, becoming an additional working surface, the locking mechanism quickly takes effect, firmly locking the cover to ensure the working surface is stable and preventing shaking from interfering with the instrument's operation. The locking mechanism also boasts excellent flexibility, automatically adapting to different support positions, whether on a flat table or a slightly sloping outdoor surface, firmly securing the cover and ensuring stable instrument operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0021] Figure 2 This is a cross-sectional view of the main structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the portable mechanism of the present invention;

[0023] Figure 4 This is a partial cross-sectional view of the portable mechanism of the present invention;

[0024] Figure 5 for Figure 4 Enlarged cross-sectional view of the structure at point A in the middle;

[0025] Figure 6 This is a cross-sectional view of the planar mechanism of the present invention;

[0026] Figure 7 for Figure 6 Enlarged cross-sectional view of the structure at point B in the middle;

[0027] Figure 8 This is a cross-sectional view of the locking mechanism of the present invention;

[0028] Figure 9 for Figure 8 Enlarged cross-sectional view of the structure at point C.

[0029] In the diagram: 1. Housing; 2. Instrument body;

[0030] 3. Portable mechanism;

[0031] 301. Inclined roller; 302. Groove column one; 303. First spring; 304. Top plate retaining column; 305. Groove sliding rod; 306. Retaining groove rib plate one; 307. Retaining groove rib plate two; 308. Through hole one; 309. Rotating bent plate one; 310. Rotating bent plate two; 311. First rotating rod; 312. Rotating handrail;

[0032] 4. Box lid; 5. Top rib plate;

[0033] 6. Planar mechanisms;

[0034] 601. Slotted column; 602. First slotted block; 603. Second slotted column; 604. Threaded column; 605. Rotating plate; 606. Arc-shaped frame; 607. First sliding rod; 608. Through-hole connecting block; 609. Telescopic baffle;

[0035] 7. Bottom rib plate; 8. Clips;

[0036] 9. Locking mechanism;

[0037] 901. Second sliding rod; 902. Push plate; 903. Clamping plate; 904. Second spring; 905. Through hole clamping block; 906. Sliding plate; 907. Rubber spring; 908. Groove column three. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] Example 1: See Figures 1-5 This invention provides a technical solution: a portable fault diagnosis electrical instrument, comprising a housing 1, an instrument body 2 fixedly connected inside the housing 1, a cover 4 rotatably connected to the outer surface of the housing 1, a top rib plate 5 fixedly connected to the outer surface of the cover 4, a bottom rib plate 7 fixedly connected to the outer surface of the housing 1, a buckle 8 rotatably connected to the outer surface of the housing 1, a portable mechanism 3 and a planar mechanism 6 fixedly connected to the outer surface of the cover 4, and a locking mechanism 9 fixedly connected to the lower surface of the bottom rib plate 7. The portable mechanism 3 includes:

[0042] The inclined roller 301 has a groove post 302 fixedly connected to its outer surface. A first spring 303 is fixedly connected to the inner surface of the groove post 302. A top plate locking post 304 is fixedly connected to the outer surface of the first spring 303. A slotted sliding rod 305 is locked onto the outer surface of the top plate locking post 304. A slotted rib 306 is fixedly connected to the outer surface of the box cover 4. A slotted rib 307 is fixedly connected to the outer surface of the box body 1. A through hole 308 is opened inside the slotted rib 306. The top plate locking post 304 is used to fix the slotted sliding rod 305.

[0043] The portable mechanism 3 also includes a first rotating bend plate 309, which is rotatably connected to a slotted sliding rod 305. A first rotating rod 311 is rotatably connected inside the first rotating bend plate 309, and a second rotating bend plate 310 is rotatably connected to the outer surface of the first rotating rod 311. A rotating handle 312 is rotatably connected to the outer surface of the first rotating rod 311, and the rotating handle 312 is used to pull the instrument body 2.

[0044] The buckle 8 engages with the outer surface of the box cover 4; the inclined roller 301 is slidably connected to the top rib plate 5; the first groove post 302 is slidably connected to the top plate clamp post 304; the groove sliding rod 305 is slidably connected to the first groove rib plate 306; the outer surface of the first groove rib plate 306 contacts the outer surface of the second groove rib plate 307; the groove sliding rod 305 is slidably connected to the second groove rib plate 307; the first groove rib plate 306 and the second groove rib plate 307 are used to adjust the groove sliding rod 305; the outer surface of the first rotating bend plate 309 contacts the outer surface of the first groove rib plate 306; the outer surface of the second rotating bend plate 310 contacts the outer surface of the first rotating bend plate 309; and the rotating handle 3... The outer surface of 12 contacts the outer surface of the rotating bending plate 310. The slotted sliding rod 305 is used to drive the rotating handrail 312. Through holes 308 are provided inside the slotted rib plate 306 and the slotted rib plate 307, so that the position where the box body 1 and the box cover 4 are engaged can be pulled, and the box cover 4 in the horizontal position can be pulled. Multiple through holes are symmetrically arranged in the horizontal position of the through hole 308, so that the height and fixation of the first rotating rod 311 can be adjusted. After the two slotted sliding rods 305 are fixed, they cooperate with the rotating bending plate 309 and the rotating bending plate 310 to achieve triangular fixation and ensure the stability of the structure.

[0045] The working principle of this embodiment is as follows: When using this portable fault diagnosis electrical instrument, during the movement of the instrument, the buckle 8 engages the housing 1 and the cover 4, thereby fixing the instrument body 2. Simultaneously, the top plate locking post 304 pushes the inclined roller 301 to slide inside the top rib plate 5, aligning it with the axis of the through hole 308. At this time, the first spring 303 pushes the top plate locking post 304 to engage with the slot sliding rod 305, and the slot sliding rod 305 is fixed through the through hole 308. The other end of the slot sliding rod 305 is fixed by the symmetrically arranged top plate locking posts 304, and the other slot sliding rod 305 is fixed by the symmetrically arranged portable mechanism 3. This achieves the connection between the rotating curved plate 309 and the rotating... The curved plate 310 is fixed in position, which drives the rotating handle 312 to rotate around the first rotating rod 311 and pulls the instrument body 2. If the position of the rotating handle 312 needs to be adjusted, the top plate locking pin 304 can be pushed outward in the opposite direction to disengage it from the slot sliding rod 305. The position of the slot sliding rod 305 is then adjusted, and the inclined roller 301 slides on the top rib plate 5 and the bottom rib plate 7. Through the above movement process, the slot sliding rod 305 is engaged, thereby adjusting the position of the rotating handle 312. If the height of the first rotating rod 311 needs to be adjusted, the slot sliding rod 305 is moved inward and engaged through multiple sets of through holes 308 to adjust the height of the first rotating rod 311.

[0046] Example 2: Please refer to Figures 6-9 Based on Embodiment 1, the present invention provides a technical solution: the planar mechanism 6 includes a slot column 601, the outer surface of the slot column 601 is fixedly connected to the upper surface of the box cover 4, a first locking block 602 is locked inside the slot column 601, a second slot column 603 is fixedly connected to the upper surface of the first locking block 602, a threaded column 604 is threaded inside the second slot column 603, a rotating plate 605 is fixedly connected to the outer surface of the threaded column 604, an arc frame 606 is rotatably connected to the outer surface of the threaded column 604, a first sliding rod 607 is fixedly connected to the outer surface of the second slot column 603, a through hole connecting block 608 is fixedly connected to the outer surface of the first rotating rod 311, a telescopic baffle 609 is fixedly connected to the outer surface of the first locking block 602, and the first sliding rod 607 is used to push the arc frame 606.

[0047] The outer surface of the slot column 601 is in contact with the outer surfaces of the top rib plate 5 and the bottom rib plate 7. The through hole connecting block 608 is slidably connected to the first sliding rod 607. The outer surface of the telescopic baffle 609 is fixedly connected to the outer surface of the slot column 601. The telescopic baffle 609 is used to protect the slot column 601. When the through hole connecting block 608 is slidably connected to the first sliding rod 607, and the position of the rotating handle 312 needs to be adjusted, the slot sliding rod 305 is released from the engagement with the top plate slot column 304, so that the slot sliding rod 305 slides inside the slot rib plate 1 306 and the slot rib plate 2 307, while the symmetrically arranged slot sliding rods 305 remain fixed, so that the first rotating rod 311 rises, thereby driving the through hole connecting block 608 to rise, releasing the sliding connection with the first sliding rod 607, so that the portable mechanism 3 can move.

[0048] The locking mechanism 9 includes a second sliding rod 901. A push plate 902 and a locking plate 903 are fixedly connected to the outer surface of the second sliding rod 901. The locking plate 903 is engaged with the outer surface of the bottom rib plate 7. A second spring 904 is fixedly connected to the outer surface of the locking plate 903. A through-hole locking block 905 is fixedly connected to the outer surface of the second spring 904. A sliding plate 906 is engaged inside the bottom rib plate 7. A rubber spring sheet 907 is fixedly connected to the outer surface of the sliding plate 906. A groove column 908 is fixedly connected to the outer surface of the arc frame 606. The groove column 908 is used to fix the second sliding rod 901.

[0049] The through-hole locking block 905 is slidably connected to the second sliding rod 901, the groove column 908 is engaged with the second sliding rod 901, the outer surface of the rubber spring 907 is fixedly connected to the outer surface of the bottom rib plate 7, and the rubber spring 907 is used to pull the sliding plate 906. A telescopic plate is provided on the outer surface of the through-hole locking block 905 and is fixedly connected to the outer surface of the locking plate 903, so that it can protect the second spring 904 and the second sliding rod 901. At the same time, when it is necessary to release the parallel fixation of the box cover 4, the second sliding rod 901 can be moved by the push plate 902 to release the parallel fixation of the box cover 4.

[0050] The working principle of this embodiment is as follows: When using this portable fault diagnosis electrical instrument, the first rotating rod 311 drives the second slot column 603 to move, and the first locking block 602 slides inside the slot column 601, thereby adjusting the position of the arc frame 606. The rotation of the rotating plate 605 drives the threaded column 604 to rotate inside the second slot column 603, causing the arc frame 606 to move upward. The symmetrically arranged threaded columns 604 support the arc frame 606. When the axis of the third slot column 908 coincides with the axis of the second sliding rod 901, the rotation of the rotating plate 605 stops. After the cover 4 rotates, the lower surface of the arc frame 606 is flush with the lower surface of the box body 1. The surface is flush, providing horizontal support for the lid 4. The movement of the first rotating rod 311 drives the through-hole connecting block 608 to move, thereby moving the second slot column 603. At the same time, the telescopic baffle 609 protects the slot column 601 and pulls outward the sliding plate 906. The second spring 904 drives the second sliding rod 901 to slide inside the through-hole locking block 905, so that the second sliding rod 901 engages with the third slot column 908, thus fixing the lid 4 in a horizontal position. The length of the second sliding rod 901 adapts the arc frame 606 to the movement of the third slot column 908, thereby fixing the arc frame 606 in different positions and adapting to different environments.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A portable electrical instrument for fault diagnosis, comprising a housing (1), wherein an instrument body (2) is fixedly connected inside the housing (1), a cover (4) is rotatably connected to the outer surface of the housing (1), a top rib plate (5) is fixedly connected to the outer surface of the cover (4), a bottom rib plate (7) is fixedly connected to the outer surface of the housing (1), a buckle (8) is rotatably connected to the outer surface of the housing (1), a portable mechanism (3) and a planar mechanism (6) are fixedly connected to the outer surface of the cover (4), and a locking mechanism (9) is fixedly connected to the lower surface of the bottom rib plate (7), characterized in that, The portable mechanism (3) includes: An inclined roller (301) is fixedly connected to a groove post (302) on its outer surface. A first spring (303) is fixedly connected to the inner surface of the groove post (302). A top plate locking post (304) is fixedly connected to the outer surface of the first spring (303). A slotted sliding rod (305) is locked to the outer surface of the top plate locking post (304). A slotted rib plate (306) is fixedly connected to the outer surface of the box cover (4). A slotted rib plate (307) is fixedly connected to the outer surface of the box body (1). A through hole (308) is opened inside the slotted rib plate (306). The top plate locking post (304) is used to fix the slotted sliding rod (305). The portable mechanism (3) further includes a first rotating bend plate (309), which is rotatably connected to a slotted sliding rod (305). The interior of the first rotating bend plate (309) is rotatably connected to a first rotating rod (311), and the outer surface of the first rotating rod (311) is rotatably connected to a second rotating bend plate (310). The outer surface of the first rotating rod (311) is rotatably connected to a rotating handle (312), which is used to pull the instrument body (2). The inclined roller (301) is slidably connected to the top rib plate (5), and the first groove column (302) is slidably connected to the top plate retaining column (304); The planar mechanism (6) includes a slot post (601), the outer surface of which is fixedly connected to the upper surface of the cover (4). A first locking block (602) is engaged inside the slot post (601). A second slot post (603) is fixedly connected to the upper surface of the first locking block (602). A threaded post (604) is threaded inside the second slot post (603). A rotating plate (605) is fixedly connected to the outer surface of the threaded post (604). The outer surface of the 04) is rotatably connected to an arc-shaped frame (606), the outer surface of the second groove column (603) is fixedly connected to a first sliding rod (607), the outer surface of the first rotating rod (311) is fixedly connected to a through-hole connecting block (608), the outer surface of the first locking block (602) is fixedly connected to a telescopic baffle (609), the first sliding rod (607) is used to push the arc-shaped frame (606); the through-hole connecting block (608) is slidably connected to the first sliding rod (607); The slot sliding rod (305) is slidably connected to the first slot rib plate (306), the outer surface of the first slot rib plate (306) is in contact with the outer surface of the second slot rib plate (307), the slot sliding rod (305) is slidably connected to the second slot rib plate (307), and the first slot rib plate (306) and the second slot rib plate (307) are used to adjust the slot sliding rod (305).

2. The portable fault diagnosis electrical instrument according to claim 1, characterized in that: The buckle (8) engages with the outer surface of the box cover (4).

3. The portable fault diagnosis electrical instrument according to claim 2, characterized in that: The outer surface of the first rotating bending plate (309) is in contact with the outer surface of the first slot rib plate (306), the outer surface of the second rotating bending plate (310) is in contact with the outer surface of the first rotating bending plate (309), the outer surface of the rotating handrail (312) is in contact with the outer surface of the second rotating bending plate (310), and the slot sliding rod (305) is used to drive the rotating handrail (312).

4. The portable fault diagnosis electrical instrument according to claim 3, characterized in that: The outer surface of the slot column (601) is in contact with the outer surfaces of the top rib plate (5) and the bottom rib plate (7). The outer surface of the telescopic baffle (609) is fixedly connected to the outer surface of the slot column (601). The telescopic baffle (609) is used to protect the slot column (601).

5. The portable fault diagnosis electrical instrument according to claim 4, characterized in that: The locking mechanism (9) includes a second sliding rod (901), a push plate (902) and a locking plate (903) are fixedly connected to the outer surface of the second sliding rod (901), the locking plate (903) is engaged with the outer surface of the bottom rib plate (7), a second spring (904) is fixedly connected to the outer surface of the locking plate (903), a through hole locking block (905) is fixedly connected to the outer surface of the second spring (904), a sliding plate (906) is engaged inside the bottom rib plate (7), a rubber spring sheet (907) is fixedly connected to the outer surface of the sliding plate (906), and a grooved column three (908) is fixedly connected to the outer surface of the arc frame (606). The grooved column three (908) is used to fix the second sliding rod (901).

6. The portable fault diagnosis electrical instrument according to claim 5, characterized in that: The through-hole block (905) is slidably connected to the second sliding rod (901), the groove column three (908) is engaged with the second sliding rod (901), the outer surface of the rubber spring (907) is fixedly connected to the outer surface of the bottom rib plate (7), and the rubber spring (907) is used to pull the sliding plate (906).

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