A protective case for a loop detector

Abstract

This invention proposes a protective shell for a loop detector, comprising a detector body and an outer shell; a grounding current-conducting assembly for discharging static electricity and interference current from the detector body; the grounding current-conducting assembly includes: a supporting platform and an opening slot at the lower end of the supporting platform, the supporting platform being disposed at the bottom of the outer shell; a current-conducting column and a grounding pin electrically connected to the current-conducting column, the current-conducting column being disposed at the upper end of the supporting platform, the grounding pin being telescopically disposed inside the opening slot, the grounding pin being used to contact the ground; a telescopic assembly for driving the grounding pin to telescopically extend and retract for positioning; the telescopic assembly includes: a connecting rod and a first push plate disposed at the outer end of the connecting rod. This invention not only enables the discharge of static electricity and interference current from the detector body, but also facilitates the retraction and concealment of the grounding pin, improving the practicality and convenience of the protective shell.

Description

Technical Field

[0001] This utility model relates to the field of power testing equipment technology, and in particular to a protective shell for a loop detector. Background Technology

[0002] A loop detector is a core device in a power system used to measure the resistance of conductive loops. It is applied to the contact resistance testing of equipment such as high-voltage switches and circuit breakers. When performing live-line testing on busbars, strong electromagnetic fields may cause fluctuations or misinterpretations in the instrument's data.

[0003] Existing loop detectors typically use ordinary plastic housings, which offer no attenuation for electromagnetic waves. This allows interference signals to penetrate the housing directly and couple to the internal signal acquisition circuitry, resulting in measurement errors. While metal housings provide effective shielding, they are significantly heavier (50%-100% heavier than plastic housings) and require additional insulation to prevent electric shock. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a protective shell for a loop detector.

[0005] To address the aforementioned issues with existing loop detectors, whose conventional housings are typically made of ordinary plastic, offering no attenuation of electromagnetic waves and allowing interference signals to directly penetrate the housing and couple to the internal signal acquisition circuitry, resulting in measurement errors, and while metal housings provide effective shielding, they are heavy and require additional insulation to prevent electric shock, the technical solution adopted in this invention is: A protective housing for a loop detector, comprising the detector body and an outer shell; Grounding current-conducting component is used to conduct current discharge to the main body of the detector; The grounding current-conducting component includes: A support platform and an opening slot at the lower end of the support platform, wherein the support platform is disposed at the bottom of the outer shell; A flow guide column and a ground pin electrically connected to the flow guide column, wherein the flow guide column is disposed at the upper end of the support platform, and the ground pin is telescopically disposed inside the opening groove, and the ground pin is used to contact the ground; A telescopic component is used to drive the ground pin to extend and retract for positioning; The telescopic component includes: A connecting rod and a first push plate disposed at the outer end of the connecting rod, wherein the connecting rod is fixedly connected to the ground pin and is used to drive the ground pin to extend and retract; A first slide groove and a spring pin disposed inside the first slide groove, the first slide groove being located on the outer side of the outer casing, the spring pin being used to limit and position the first push piece.

[0006] Preferably, the upper end of the outer shell is hinged to a cover.

[0007] Preferably, the guide columns are fixedly connected to the four corners of the upper part of the support platform, and the guide columns extend to the four corners of the lower part of the detector body.

[0008] Preferably, the ground pin is movably connected to both sides of the inner wall of the opening groove, the upper end of the ground pin is electrically connected to the guide column through a wire, and the connecting rod is movably connected to the inner wall of the upper end of the opening groove.

[0009] Preferably, connecting springs are fixed on both sides of the upper end of the connecting rod, the upper end of the connecting spring is fixed to the top of the opening groove, and telescopic holes are opened through the four corners of the lower end of the outer shell, and the telescopic holes are on the same vertical line as the ground pin.

[0010] Preferably, the first slide groove is formed on the outer side of the middle of the opening groove, and the first slide groove is vertical and extends outward through the outer shell, and the first push piece is movably connected to the inner wall of the upper end of the first slide groove.

[0011] Preferably, a horizontal second slide groove is provided on the outer side of the lower end of the first slide groove, and a second push plate is movably connected to the inner wall of the second slide groove. The inner side of the second push plate is fixed to the pin rod of the spring pin.

[0012] Preferably, the first push plate has a pin hole in the middle that matches the spring pin rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are: During the process of the first pusher being pushed, the connecting rod moves downwards linearly along the inner wall of the opening groove. As the connecting rod moves downwards, it stretches the connecting spring downwards, causing the ground pin to move downwards linearly, allowing it to pass through the telescopic hole and contact the ground. Once the ground pin contacts the ground, through the cooperation of the flexible wire and the guide column, the ground pin can sequentially conduct the static electricity and interference current generated by the main body of the detector to the ground, thereby effectively preventing static electricity and interference current from affecting the detection accuracy of the main body of the detector. This invention also releases the limiting fixation on the first push plate after the main body of the detector has completed the detection work. At this time, the elastic potential energy generated by the stretching deformation of the connecting spring will come into play, driving the ground pin to retract upwards. In this way, not only can the static electricity and interference current of the main body of the detector be discharged, but the ground pin can also be easily retracted and hidden, improving the practicality and convenience of the protective shell. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is a partial structural cross-sectional view of the present invention; Figure 4 This is a partial structural schematic diagram of the present invention.

[0015] Reference numerals in the attached drawings: 1. Main body of the detector; 2. Outer shell; 3. Cover; 4. Support platform; 5. Guide column; 6. Opening groove; 7. Ground pin; 8. Connecting rod; 9. Connecting spring; 10. Telescopic hole; 11. First slide groove; 12. First push plate; 13. Spring pin; 14. Second slide groove; 15. Second push plate; 16. Pin hole. Detailed Implementation

[0016] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0017] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0018] Please see Figure 1 - Figure 4 This embodiment proposes a protective shell for a loop detector, including a detector body 1 and an outer shell 2, wherein a cover 3 is hinged to the upper end of the outer shell 2, and the cover 3 and the outer shell 2 cooperate with each other to form a comprehensive protective enclosure for the detector body 1.

[0019] The inner bottom of the outer shell 2 is glued and fixed with a support platform 4. The main function of the support platform 4 is to support the main body 1 of the detector. At the same time, it can also leave sufficient heat dissipation space at the bottom of the main body 1 of the detector to ensure that the detector can effectively dissipate heat during operation.

[0020] At the four corners of the supporting platform 4, guide columns 5 are fixedly installed. The guide columns 5 are not only tightly bonded to the supporting platform 4, but also extend to the four lower corners of the detector body 1. Through this design, the guide columns 5 can effectively guide the static electricity and interference current generated by the detector body 1 downward, ensuring the stable operation of the detector.

[0021] The lower end of the support platform 4 has openings 6 on both sides, and ground pins 7 are movably connected to both sides of the openings 6, allowing the ground pins 7 to contact the ground and discharge. The upper end of the ground pins 7 is electrically connected to the guide column 5 via a flexible wire (not shown in detail in the figure) to ensure smooth current conduction. A connecting rod 8 is movably connected to the upper inner wall of the opening 6, and both sides of the connecting rod 8 are firmly bonded to the ground pins 7. Connecting springs 9 are also fixedly installed on both sides of the upper end of the connecting rod 8, and the upper end of the connecting springs 9 is fixedly installed at the inner top of the opening 6. Through this elastic connection, the connecting springs 9 provide flexible elastic support for the connecting rod 8. Telescopic holes 10 are provided through the four corners of the lower end of the outer casing 2, and the telescopic holes 10 are on the same vertical line as the ground pins 7, allowing the ground pins 7 to extend downward smoothly through the telescopic holes 10.

[0022] A first sliding groove 11 is formed on the outer side of the middle part of the opening groove 6. The first sliding groove 11 is vertical and extends outward through the outer shell 2. A first push plate 12 is movably connected to the upper inner wall of the first sliding groove 11. The inner side of the first push plate 12 is bonded and fixed to the outer side of the connecting rod 8. By pushing the first push plate 12, the connecting rod 8 can be moved vertically along the inner wall of the opening groove 6. A spring pin 13 is embedded in the inner side wall of the lower end of the first sliding groove 11. A second sliding groove 14 is formed on the outer side of the lower end of the first sliding groove 11. A second push plate 15 is movably connected to the inner wall of the second sliding groove 14. The inner side of the second push plate 15 is bonded and fixed to the pin portion of the spring pin 13. By pushing the second push plate 15, the pin portion of the spring pin 13 can be horizontally extended or retracted. The first push plate 12 has a pin hole 16 in the middle that matches the pin rod of the spring pin 13. When the pin rod of the spring pin 13 is inserted into the pin hole 16, it can limit and fix the first push plate 12.

[0023] Please continue reading. Figure 1 - Figure 4 In actual use, the cover 3 and the outer shell 2 cooperate to provide reliable enclosure and protection for the main body 1 of the detector. When the main body 1 of the detector needs to be used, simply push the first push plate 12 downward. During the pushing process of the first push plate 12, it will drive the connecting rod 8 to move downward in a straight line along the inner wall of the opening groove 6. While the connecting rod 8 moves downward, it will stretch the connecting spring 9 downward and drive the ground needle 7 to move downward in a straight line, so that the ground needle 7 passes through the telescopic hole 10 and contacts the ground. After the ground needle 7 contacts the ground, through the cooperation of the flexible wire and the guide column 5, the ground needle 7 can conduct the static electricity and interference current generated by the main body of the detector to the ground in sequence, thereby effectively avoiding the impact of static electricity and interference current on the detection accuracy of the main body 1 of the detector.

[0024] Simultaneously, as the first pusher 12 is pushed downwards, the second pusher 15 is pushed inwards. When the second pusher 15 is pushed, it causes the spring pin 13 to retract inwards. When the first pusher 12 moves downwards to the bottom of the first slide groove 11, it is released. At this time, the pin rod of the spring pin 13, under the elastic potential energy generated by its own contraction, inserts into the inner wall of the pin hole 16. Through the cooperation between the pin rod of the spring pin 13 and the pin hole 16, the first pusher 12 is limited and fixed. After the first pusher 12 is limited and fixed, the ground pin 7 will also synchronously maintain a fixed extended state.

[0025] After the detector body 1 completes the detection work, the limiting fixation of the first push plate 12 is released. At this time, the elastic potential energy generated by the stretching deformation of the connecting spring 9 will come into play, driving the ground pin 7 to retract upwards. In this way, not only can the static electricity and interference current of the detector body 1 be discharged, but the ground pin 7 can also be easily retracted and hidden, improving the practicality and convenience of the protective shell.

[0026] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A protective housing for a loop detector, comprising the detector body, characterized in that, include: shell; Grounding current-conducting component is used to conduct current discharge to the main body of the detector; The grounding current-conducting component includes: A support platform and an opening slot at the lower end of the support platform, wherein the support platform is disposed at the bottom of the outer shell; A flow guide column and a ground pin electrically connected to the flow guide column, wherein the flow guide column is disposed at the upper end of the support platform, and the ground pin is telescopically disposed inside the opening groove, and the ground pin is used to contact the ground; A telescopic component is used to drive the ground pin to extend and retract for positioning; The telescopic component includes: A connecting rod and a first push plate disposed at the outer end of the connecting rod, wherein the connecting rod is fixedly connected to the ground pin and is used to drive the ground pin to extend and retract; A first slide groove and a spring pin disposed inside the first slide groove, the first slide groove being located on the outer side of the outer casing, the spring pin being used to limit and position the first push piece.

2. The protective housing of the loop detector according to claim 1, characterized in that, The upper end of the outer shell is hinged to a cover.

3. The protective housing of the loop detector according to claim 1, characterized in that, The guide columns are fixedly connected to the four corners of the upper part of the support platform, and extend to the four corners of the lower part of the detector body.

4. The protective housing of the loop detector according to claim 3, characterized in that, The ground pin is movably connected to both sides of the inner wall of the opening groove. The upper end of the ground pin is electrically connected to the guide column through a wire. The connecting rod is movably connected to the inner wall of the upper end of the opening groove.

5. The protective housing of the loop detector according to claim 4, characterized in that, Connecting springs are fixed on both sides of the upper end of the connecting rod. The upper end of the connecting spring is fixed to the top of the opening groove. Telescopic holes are opened through the four corners of the lower end of the outer shell, and the telescopic holes are on the same vertical line as the ground pin.

6. The protective housing of the loop detector according to claim 5, characterized in that, The first slide groove is located on the outer side of the middle of the opening groove, and the first slide groove is vertical and extends outward through the outer shell. The first pusher piece is attached to and movably connected to the inner wall of the upper end of the first slide groove.

7. The protective housing of the loop detector according to claim 6, characterized in that, A horizontal second slide is provided on the outer side of the lower end of the first slide. A second pusher is movably connected to the inner wall of the second slide. The inner side of the second pusher is fixed to the pin of the spring pin.

8. The protective housing of the loop detector according to claim 7, characterized in that, The first push plate has a pin hole in the middle that matches the spring pin rod.

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