Anti-impact structure for electronic insulation resistance meter and electronic insulation resistance meter

Abstract

The invention discloses an anti-impact structure for an electronic insulation resistance meter and the electronic insulation resistance meter, the anti-impact structure comprises a box body and a protection plate, a buffer member, a fixing member and a mounting member are arranged in the box body, and the buffer member is arranged in the box body; the buffer piece comprises a lifting plate, a rotating assembly, a guide rod, a sliding assembly, a first spring and a sliding block, the protection plates are symmetrically arranged at the upper end and the lower end of the box body, the fixing piece and the mounting piece are arranged at the upper end and the lower end of the box body respectively, and the fixing piece is matched with the mounting piece to fix the resistance meter. According to the invention, the box body can protect the insulation resistance meter, the protection plate and the buffer member are arranged to buffer the box body, the box body is prevented from rigidly contacting with the ground to generate large vibration to damage the insulation resistance meter, and when the dial plate falls downwards, the buffer member can buffer the insulation resistance meter, so that the insulation resistance meter is protected. And the safety of the insulation resistance meter and the measurement accuracy of the insulation resistance meter are ensured.

Description

Technical Field

[0001] This invention belongs to the technical field of insulation resistance meters, and specifically relates to an impact-resistant structure for an electronic insulation resistance meter and the electronic insulation resistance meter itself. Background Technology

[0002] An insulation resistance meter, also known as a megohmmeter, is mainly composed of three parts: first, a DC high-voltage generator to produce DC high voltage; second, a measuring circuit; and third, a display. An insulation resistance meter is a specialized instrument used to measure maximum resistance, insulation resistance, absorption ratio, and polarization index. Its unit of measurement is megohms. It has its own high-voltage power supply. The insulation performance of electrical products is one of the important indicators for evaluating the quality of their insulation, which is reflected by insulation resistance.

[0003] Most shock-resistant DC electronic insulation resistance meters on the market are carried by workers because they are used to test various electrical products. Since resistance meters measure values, they have a measuring needle installed on the instrument panel. If a resistance meter is accidentally dropped to the ground, it will affect the accuracy of the measurement.

[0004] A search revealed that patent application number 202222376626.5 discloses a DC electronic insulation resistance meter with shock resistance, comprising a meter housing and a buffer structure. A handle is bolted to the top of the meter housing, and the buffer structure is bolted to the left and right sides of the meter housing. The buffer structure includes a buffer cylinder, which is bolted to the meter housing on the side facing the handle. A telescopic rod is inserted into the upper part of the buffer cylinder, a rubber pad is fitted on the top of the telescopic rod, and a first buffer spring is fitted on the outside of the telescopic rod. A connecting block is welded to the bottom of the telescopic rod, and the connecting block slides movably against the inner wall of the buffer cylinder. The bottom of the connecting block is bolted to the buffer rod. This shock-resistant DC electronic insulation resistance meter features buffer structures on both sides of the meter, which protect it from accidental drops and ensure the accuracy of measurements. However, while the buffer structures can cushion the fall, they are ineffective when the meter is dropped face down, potentially damaging the dial and affecting the measurement results. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an anti-shock structure for an electronic insulation resistance meter and an electronic insulation resistance meter. In this device, the housing can protect the insulation resistance meter, and the protective plate and buffer can cushion the housing to prevent large shocks caused by rigid contact between the housing and the ground from damaging the insulation resistance meter. When the meter is dropped face down, the buffer can cushion the insulation resistance meter, ensuring the safety of the insulation resistance meter and the accuracy of the insulation resistance measurement.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An impact-resistant structure for an electronic insulation resistance meter includes a housing and a protective plate. Inside the housing, there are buffer components, fixing components, and mounting components, with the buffer components located inside the housing. The buffer includes a lifting plate, a rotating assembly, a guide rod, a sliding assembly, a first spring, and a sliding block. The lifting plate, rotating assembly, guide rod, first spring, and sliding block are symmetrically arranged on both sides of the center line of the box. The rotating assembly is rotatably mounted on the inner wall of the box. The lifting plate is symmetrically arranged on both sides of the rotating assembly. The guide rod is fixedly mounted on the inner wall of the box. A rotating arm is also provided on the rotating assembly. The sliding assembly cooperates with the rotating arm. The first spring is sleeved on the guide rod. The sliding block is slidably mounted on the guide rod and cooperates with the rotating assembly. The protective plates are symmetrically arranged at the upper and lower ends of the box, and the fixing parts and mounting parts are respectively arranged at the upper and lower ends of the box, with the fixing parts cooperating with the mounting parts to fix the resistance meter.

[0007] Preferably, a fixing groove is formed on the inner wall of the housing, and a strip groove is formed on the inner wall of the fixing groove. The guide rod is symmetrically arranged on the two inner walls of the strip groove. The sliding block is slidably installed on the guide rod. The fixing groove facilitates the installation of the rotating component and ensures the normal operation of the rotating component. The strip groove is used to install and guide the sliding block, and also serves to protect the sliding block and ensure its normal operation.

[0008] Preferably, the rotating assembly includes a first rotating rod, a second rotating rod, and a rotating shaft. One end of the first rotating rod and the second rotating rod are fixedly connected, and there is an included angle between the first rotating rod and the second rotating rod. The lifting plate is rotatably mounted on the other end of the first rotating rod. The rotating shaft is fixedly mounted at the connection between the first rotating rod and the second rotating rod, and is rotatably mounted on the inner wall of the housing. The rotating assembly can support and settle the insulation resistance meter, ensuring the safety of the insulation resistance meter. The rotating shaft can drive the first rotating rod and the second rotating rod to rotate, thereby ensuring that the cooperation between the first rotating rod and the second rotating rod can drive the insulation resistance meter to be properly installed in the housing.

[0009] Preferably, a mounting groove is formed on the outer wall of the housing, and the rotating arm is disposed in the mounting groove. One end of the rotating arm is fixedly mounted on the rotating shaft, and a slotted hole is formed at the other end of the second rotating rod. A fixing post is fixedly mounted on the sliding block, and the fixing post slides in cooperation with the slotted hole. The mounting groove facilitates the installation of the rotating arm and the sliding assembly, ensuring the normal operation of the rotating arm and the sliding assembly. The slotted hole on the second rotating rod cooperates with the fixing post on the sliding block, which can drive the first rotating rod and the second rotating rod to rotate around the rotating shaft, thereby fixing the insulation resistance meter in the housing and ensuring the safety of the insulation resistance meter.

[0010] Preferably, the sliding assembly includes a lifting rod, a guide plate, a push rod, and a sliding sleeve. The sliding sleeve is fixedly installed on one side of the middle portion of the lifting rod. Both ends of the guide plate are fixedly installed on the two inner walls of the mounting groove. The sliding sleeve slidably engages with the guide plate. A slotted hole is formed on both sides of the centerline of the lifting rod. A sliding post is provided on the other end of the rotating arm, slidingly positioned within the slotted hole. The push rod is fixedly installed on one side of the lifting rod, with one end extending through the side wall of the mounting groove to the outside of the groove. The sliding assembly enables the rotating arm to rotate around the rotation axis. The purpose is that when the meter falls face down, the first part to contact the ground is the push rod. The movement of the push rod causes the lifting rod to move, which in turn causes the sliding column at the end of the rotating arm to move along the oblong hole. The rotation of the rotating arm causes the rotating shaft to rotate, which in turn causes the first rotating rod and the second rotating rod to rotate. The rotation of the first rotating rod and the second rotating rod causes the lifting plate to move towards the bottom of the box. Under the action of the fixing parts and the mounting parts, the insulation resistance meter is pushed to the lifting plate, so as to sink the insulation resistance meter into the box and prevent the meter dial from being damaged by protrusions or stones on the ground.

[0011] Preferably, the protective plate adopts an arc-shaped structure and has a wear-resistant layer. The arc-shaped protective plate can serve as a buffer to prevent the box from directly contacting the ground, thus ensuring the safety of both the box and the insulation resistance meter. The wear-resistant layer also ensures the safety of the protective plate.

[0012] Preferably, the fixing component includes a threaded rod, movable blocks symmetrically arranged on both sides of the center line of the threaded rod, a connecting rod, and a push plate. A groove is formed on the inner wall of the top of the housing. The threaded rod is rotatably mounted on the inner wall of the groove, and one end of the threaded rod extends through the housing to the outside of the housing. The threads on both sides of the center line of the threaded rod have opposite directions. The movable blocks are threadedly connected to the threaded rod. The connecting rods are symmetrically arranged on the upper and lower sides of the movable blocks, and both ends of the connecting rods are rotatably connected to the movable blocks and the push plate, respectively. The fixing component can fix the insulation resistance meter in the housing, prevent the insulation resistance meter from falling out of the housing, and ensure the safety of the insulation resistance meter. Rotating the threaded rod drives the movable blocks to move towards the center. The movement of the movable blocks will drive one end of the connecting rod to move. The other end of the connecting rod will push the push plate to move outward. Under the action of the push plate and the housing, the insulation resistance meter is fixed.

[0013] Preferably, the fixing component further includes a sliding plate, a second spring, guide rods symmetrically arranged on both sides of the center line of the push plate, and a fixing rod arranged on the bottom center line of the push plate. A side ear and a protrusion are installed on one side of the sliding plate. The side ears are symmetrically arranged on both sides of the center line of the sliding plate, and the side ears on the same side are arranged one above the other on the upper and lower sides of the push plate. The side ears are slidably connected to the guide rods. The protrusion is fixedly installed in the middle of one side of the sliding plate and is slidably connected to the fixing rod. The second spring is sleeved on the fixing rod and is located between the push plate and the protrusion. When the insulation resistance meter installed in the housing falls along with the housing, the sliding plate, the second spring, the side ear, and the protrusion work together to buffer the insulation resistance meter and ensure its safety.

[0014] Preferably, a baffle is provided on the top of the sliding plate, and an internal hex bolt is provided at the end of the threaded rod. The baffle can limit the insulation resistance meter and prevent it from falling out of the box during operation, thus ensuring the safety of the insulation resistance meter. The internal hex bolt makes it easy for the operator to rotate the threaded rod.

[0015] Preferably, the mounting component includes a fixed plate, a lifting plate, a fixed block installed in the middle of one side of the lifting plate, and sliders arranged on both sides of the fixed block. Mounting rods that slide with the sliders are provided on both sides of the center line of the fixed plate. A vertical rod that slides with the fixed block is also provided at the bottom center of the fixed plate. A third spring is sleeved on the vertical rod, located between the fixed block and the fixed plate. A bend is provided at the top of the lifting plate. The mounting component is used to fix and install the insulation resistance meter. The lifting plate, vertical rod, and third spring provide cushioning to prevent damage to the meter dial when it falls face down, greatly ensuring the safety of the insulation resistance meter.

[0016] An electronic insulation resistance meter includes the shock-resistant structure for electronic insulation resistance meters described above.

[0017] The beneficial effects of this invention are: 1) The enclosure in this device can protect the insulation resistance meter, and the protective plate and buffer can cushion the enclosure to prevent large shocks caused by the rigid contact between the enclosure and the ground from damaging the insulation resistance meter. When the meter falls face down, the buffer can cushion the insulation resistance meter, ensuring the safety of the insulation resistance meter and the accuracy of the insulation resistance measurement.

[0018] 2) The fixed groove of this device facilitates the installation of the rotating component and ensures the normal operation of the rotating component. The strip groove is used to install and guide the sliding block, which also serves to protect the sliding block and ensure its normal operation.

[0019] 3) The rotating component of this device can support and settle the insulation resistance meter, ensuring its safety. The rotating shaft can drive the first rotating rod and the second rotating rod to rotate, thereby ensuring that the cooperation between the first rotating rod and the second rotating rod can drive the insulation resistance meter to be installed normally in the box.

[0020] 4) The mounting slot of this device facilitates the installation of the rotating arm and sliding assembly, ensuring the normal operation of the rotating arm and sliding assembly. The strip hole on the second rotating rod cooperates with the fixed post on the sliding block, which can drive the first rotating rod and the second rotating rod to rotate around the rotating shaft, thereby fixing the insulation resistance meter in the box and ensuring the safety of the insulation resistance meter.

[0021] 5) The sliding component of this device enables the rotating arm to rotate around the rotating shaft. When the dial falls face down, the push rod is the first to contact the ground. The movement of the push rod moves the lifting rod, which in turn moves the sliding column at the end of the rotating arm along the oblong hole. The rotation of the rotating arm then drives the rotating shaft to rotate, which in turn causes the first and second rotating rods to rotate. The rotation of the first and second rotating rods causes the lifting plate to move towards the bottom of the housing. With the help of the fixing and mounting components, the insulation resistance meter is pushed to the lifting plate, thus sinking the insulation resistance meter into the housing and preventing damage to the dial from protrusions or stones on the ground.

[0022] 6) The arc-shaped protective plate of this device can serve as a buffer to prevent the box from directly contacting the ground, which not only ensures the safety of the box but also the safety of the insulation resistance meter. The wear-resistant layer can also ensure the safety of the protective plate.

[0023] 7) The fixing parts of this device can fix the insulation resistance meter in the box, prevent the insulation resistance meter from falling out of the box, and ensure the safety of the insulation resistance meter. Rotating the threaded rod drives the moving block to move towards the center. The movement of the moving block will drive one end of the connecting rod to move. The other end of the connecting rod will push the push plate to move outward. Under the action of the push plate and the box, the insulation resistance meter is fixed.

[0024] 8) When the insulation resistance meter installed inside the box falls along with the box, the sliding plate, the second spring, the side lug, and the protrusion work together to cushion the insulation resistance meter and ensure its safety.

[0025] 9) The baffle of this device can limit the insulation resistance meter and prevent it from falling out of the box during operation, thus ensuring the safety of the insulation resistance meter. The internal hex bolts make it easy for the operator to rotate the threaded rod.

[0026] 10) The mounting components of this device are used to fix and install the insulation resistance meter. The lifting plate, upright, and third spring serve as a buffer to prevent damage to the meter dial when it falls face down, thus greatly ensuring the safety of the insulation resistance meter. Attached Figure Description

[0027] Appendix Figure 1 This is a schematic diagram of the structure of the present invention.

[0028] Appendix Figure 2 This is a schematic diagram of the internal structure of the box in this invention.

[0029] Appendix Figure 3 This is a schematic diagram of the groove and mounting slot in this invention.

[0030] Appendix Figure 4 This is a schematic diagram of the installation structure of the fastener in this invention.

[0031] Appendix Figure 5 This is a schematic diagram of the installation structure of the buffer component in this invention.

[0032] Appendix Figure 6 This is a schematic diagram of the buffer component in this invention.

[0033] Appendix Figure 7 This is the present invention. Figure 6 Enlarged view of point A in the middle.

[0034] Appendix Figure 8 This is a schematic diagram of the mounting component in this invention.

[0035] Appendix Figure 9 This is a schematic diagram of the fastener structure in this invention. Figure 1 .

[0036] Appendix Figure 10 This is a schematic diagram of the fastener structure in this invention. Figure 2 .

[0037] In the picture: 1. Box body; 101. Groove; 102. Fixing groove; 103. Strip groove; 104. Mounting groove; 2. Protective panels; 3. Buffer component; 301. Lifting plate; 302. First spring; 303. Guide rod; 304. Rotating assembly; 305. Fixed column; 306. Sliding block; 307. Rotating arm; 308. Sliding column; 309. First rotating rod; 3010. Rotating shaft; 3011. Second rotating rod; 3012. Strip hole; 3013, Sliding assembly; 3014, Guide plate; 3015, Lifting rod; 3016, Sliding sleeve; 3017, Push rod; 3018, Waist-shaped hole; 4. Mounting components; 401. Fixing plate; 402. Lifting plate; 403. Bending; 404. Mounting rod; 405. Sliding block; 406. Third spring; 407. Fixing block; 408. Upright pole; 5. Fixing component; 501. Threaded rod; 502. Sliding plate; 503. Socket head cap screw; 504. Moving block; 505. Push plate; 506. Baffle; 507. Fixing rod; 508. Protrusion; 509. Second spring; 5010. Side lug; 5011. Guide rod; 5012. Connecting rod. Detailed Implementation

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0040] like Figure 1As shown, an anti-shock structure for an electronic insulation resistance meter includes a housing 1 and a protective plate 2. Inside the housing 1, there are buffer components 3, fixing components 5, and mounting components 4. The buffer components 3 are located inside the housing 1. The protective plate 2 can protect the upper and lower ends of the housing 1, ensuring the safety of the housing 1.

[0041] In this embodiment, as Figure 5 , Figure 6 As shown, the buffer component 3 includes a lifting plate 301, a rotating assembly 304, a guide rod 303, a sliding assembly 3013, a first spring 302, and a sliding block 306. The lifting plate 301, rotating assembly 304, guide rod 303, first spring 302, and sliding block 306 are symmetrically arranged on both sides of the center line of the housing 1. The rotating assembly 304 is rotatably mounted on the inner wall of the housing 1. The lifting plate 301 is symmetrically arranged on both sides of the rotating assembly 304. The guide rod 303 is fixedly mounted on the inner wall of the housing 1. The guide rod 303 is used to install and restrict the sliding block 306, guide the sliding block 306, prevent the sliding block 306 from falling off during operation, and ensure the normal operation of the guide block.

[0042] A rotating arm 307 is also provided on the rotating assembly 304. The sliding assembly 3013 cooperates with the rotating arm 307. The first spring 302 is sleeved on the guide rod 303. The first spring 302 is used to provide power for the movement of the sliding block 306, thereby driving the rotating assembly 304 to reset and ensuring the normal operation of the rotating assembly 304. The sliding block 306 is slidably mounted on the guide rod 303 and cooperates with the rotating assembly 304.

[0043] When the meter falls face down, the sliding component 3013 is the first to come into contact with the ground. Under the weight of the housing 1 and the insulation resistance meter, the sliding component 3013 will slide. The sliding component 3013 will then rotate the rotating component 304. The rotation of the rotating component 304 will cause the lifting plate 301 to move away from the insulation resistance meter. With the help of the mounting part 4 and the fixing part 5, the insulation resistance meter can be driven to sink into the interior of the housing 1, thereby protecting the insulation resistance meter.

[0044] In this embodiment, as Figure 1 As shown, the protective plates 2 are symmetrically arranged at the upper and lower ends of the box body 1. In order to ensure the protective quality of the protective plates 2, the protective plates 2 can also be made of elastic materials, such as rubber.

[0045] like Figure 2 , Figure 4 As shown, the fixing component 5 and the mounting component 4 are respectively set at the upper and lower ends of the housing 1, and the fixing component 5 cooperates with the mounting component 4 to fix the resistance meter.

[0046] In this embodiment, as Figure 3 As shown, a fixing groove 102 is formed on the inner wall of the housing 1, and a strip groove 103 is formed on the inner wall of the fixing groove 102. The strip groove 103 is set to install and guide the sliding block 306, and also to protect the sliding block 306, ensuring the normal operation of the sliding block 306. The guide rod 303 is symmetrically arranged on the two inner walls of the strip groove 103. The sliding block 306 is slidably installed on the guide rod 303. The fixing groove 102 facilitates the installation of the rotating component 304, ensuring the normal operation of the rotating component 304.

[0047] In this embodiment, as Figure 6 As shown, the rotating assembly 304 includes a first rotating rod 309, a second rotating rod 3011, and a rotating shaft 3010. One end of the first rotating rod 309 and the second rotating rod 3011 are fixedly connected, and there is an included angle between the first rotating rod 309 and the second rotating rod 3011. The arrangement of the first rotating rod 309 and the second rotating rod 3011 can serve to support the lifting plate 301 and the insulation resistance meter, ensuring that the insulation resistance meter can be sunk into the housing 1 and ensuring the safety of the insulation resistance meter.

[0048] like Figure 5 As shown, the lifting plate 301 is designed to support the insulation resistance meter and increases the contact area between the rotating assembly 304 and the insulation resistance meter, ensuring the safety of the insulation resistance meter. The lifting plate 301 is rotatably mounted on the other end of the first rotating rod 309, ensuring that the lifting plate 301 is always in contact with the bottom of the insulation resistance meter, thereby achieving the purpose of supporting and installing the insulation resistance meter.

[0049] like Figure 6 As shown, the rotating shaft 3010 is fixedly installed at the connection between the first rotating rod 309 and the second rotating rod 3011, and the rotating shaft 3010 is rotatably installed on the inner wall of the housing 1. The arrangement of the rotating shaft 3010 facilitates the rotation of the first rotating rod 309 and the second rotating rod 3011, ensuring the normal operation of the rotating assembly 304.

[0050] The rotating assembly 304 serves to support and settle the insulation resistance meter, ensuring its safety. The rotating shaft 3010 can drive the first rotating rod 309 and the second rotating rod 3011 to rotate, thereby ensuring that the cooperation between the first rotating rod 309 and the second rotating rod 3011 can drive the insulation resistance meter to be installed normally in the housing 1.

[0051] In this embodiment, as Figure 5As shown, an installation groove 104 is provided on the outer wall of the housing 1. The rotating arm 307 is disposed in the installation groove 104. One end of the rotating arm 307 is fixedly installed on the rotating shaft 3010. The installation groove 104 facilitates the installation of the rotating arm 307 and the sliding assembly 3013, ensuring the normal operation of the rotating arm 307 and the sliding assembly 3013.

[0052] like Figure 5 , Figure 6 As shown, a slotted hole 3012 is opened at the other end of the second rotating rod 3011, and a fixing post 305 is fixedly installed on the sliding block 306. The fixing post 305 is slidably engaged with the slotted hole 3012. The slotted hole 3012 on the second rotating rod 3011 and the fixing post 305 on the sliding block 306 cooperate with each other, which can drive the first rotating rod 309 and the second rotating rod 3011 to rotate around the rotating shaft 3010, thereby achieving the purpose of fixing the insulation resistance meter inside the housing 1 and ensuring the safety of the insulation resistance meter.

[0053] In this embodiment, as Figure 7 As shown, the sliding assembly 3013 includes a lifting rod 3015, a guide plate 3014, a push rod 3017, and a sliding sleeve 3016. The sliding sleeve 3016 is fixedly installed on one side of the middle part of the lifting rod 3015. There are waist-shaped holes 3018 on both sides of the center line of the lifting rod 3015. A sliding column 308 is provided on the other end of the rotating arm 307. The sliding column 308 is slidably disposed in the waist-shaped hole 3018. The push rod 3017 is fixedly installed on one side of the lifting rod 3015. One end of the push rod 3017 extends through the side wall of the mounting groove 104 to the outside of the mounting groove 104. The sliding assembly 3013 can achieve the purpose of rotating the rotating arm 307 around the rotating shaft 3010.

[0054] When the dial falls face down, the first part to contact the ground is the push rod 3017. The movement of the push rod 3017 causes the lifting rod 3015 to move. The movement of the lifting rod 3015 causes the sliding column 308 at the end of the rotating arm 307 to move along the waist-shaped hole 3018. The rotation of the rotating arm 307 causes the rotating shaft 3010 to rotate. The rotation of the rotating shaft 3010 causes the first rotating rod 309 and the second rotating rod 3011 to rotate. The rotation of the first rotating rod 309 and the second rotating rod 3011 causes the lifting plate 301 to move towards the side closer to the bottom of the box 1. Under the action of the fixing part 5 and the mounting part 4, the insulation resistance meter is pushed to the lifting plate 301, so as to sink the insulation resistance meter into the box 1 and prevent the dial from being damaged by protrusions or stones on the ground.

[0055] The guide plate 3014 is fixedly installed on the two inner walls of the mounting groove 104 at both ends. The sliding sleeve 3016 is slidably engaged with the guide plate 3014. The guide plate 3014 and the sliding sleeve 3016 can guide and limit the lifting rod 3015, preventing the lifting rod 3015 from tilting during the lifting process. This allows the first rotating rod 309 and the second rotating rod 3011 on both sides of the center line of the lifting rod 3015 to rotate simultaneously during the lifting process, thereby ensuring that the insulation resistance meter inside the housing 1 is in a stable state.

[0056] In this embodiment, as Figure 1 As shown, the protective plate 2 adopts an arc-shaped structure and has a wear-resistant layer. The arc-shaped protective plate 2 can serve as a buffer to prevent the box 1 from directly contacting the ground, which not only ensures the safety of the box 1, but also ensures the safety of the insulation resistance meter. The wear-resistant layer can ensure the safety of the protective plate 2.

[0057] In this embodiment, as Figure 9 , Figure 10 As shown, the fixing component 5 includes a threaded rod 501, movable blocks 504 symmetrically arranged on both sides of the center line of the threaded rod 501, a connecting rod 5012, and a push plate 505. A groove 101 is opened on the inner wall of the top of the housing 1. The threaded rod 501 is rotatably installed on the inner wall of the groove 101, and one end of the threaded rod 501 extends through the housing 1 to the outside of the housing 1. The threads on both sides of the center line of the threaded rod 501 have opposite directions. The movable blocks 504 are threadedly connected to the threaded rod 501. The connecting rod 5012 is symmetrically arranged on the upper and lower sides of the movable blocks 504, and both ends of the connecting rod 5012 are rotatably connected to the movable blocks 504 and the push plate 505, respectively. The fixing component 5 can fix the insulation resistance meter inside the housing 1, prevent the insulation resistance meter from falling out of the housing 1, and ensure the safety of the insulation resistance meter.

[0058] Rotating the threaded rod 501 causes the moving block 504 to move towards the center. The movement of the moving block 504 causes one end of the connecting rod 5012 to move, and the other end of the connecting rod 5012 pushes the push plate 505 to move outward. Under the action of the push plate 505 and the housing 1, the insulation resistance meter is fixed.

[0059] In this embodiment, as Figure 9 , Figure 10As shown, the fixing component 5 also includes a sliding plate 502, a second spring 509, guide rods 5011 symmetrically arranged on both sides of the center line of the push plate 505, and a fixing rod 507 arranged on the bottom center line of the push plate 505. A side ear 5010 and a protrusion 508 are installed on one side of the sliding plate 502. The side ear 5010 is symmetrically arranged on both sides of the center line of the sliding plate 502, and the side ear 5010 on the same side is arranged one above the other on the upper and lower sides of the push plate 505. The side ear 5010 is slidably connected to the guide rod 5011. The protrusion 508 is fixedly installed in the middle of one side of the sliding plate 502, and the protrusion 508 is slidably connected to the fixing rod 507. The second spring 509 is sleeved on the fixing rod 507, and the second spring 509 is located between the push plate 505 and the protrusion 508.

[0060] When the insulation resistance meter installed inside the housing 1 falls down along with the housing 1, the sliding plate 502, the second spring 509, the side lug 5010, and the protrusion 508 work together to cushion the insulation resistance meter and ensure its safety.

[0061] In this embodiment, as Figure 9 As shown, a baffle 506 is also provided on the top of the sliding plate 502, and an internal hex bolt 503 is provided at the end of the threaded rod 501. The baffle 506 can limit the insulation resistance meter and prevent the insulation resistance meter from falling out of the housing 1 during operation, thus ensuring the safety of the insulation resistance meter. The internal hex bolt 503 makes it easy for the operator to rotate the threaded rod 501.

[0062] In this embodiment, as Figure 8 As shown, the mounting component 4 includes a fixed plate 401, a lifting plate 402, a mounting rod 404, a fixed block 407 installed in the middle of one side of the lifting plate 402, and sliders 405 arranged on both sides of the fixed block 407. Mounting rods 404 that slide in cooperation with sliders 405 are provided on both sides of the center line of the fixed plate 401. The mounting rods 404 facilitate the sliding of the lifting plate 402 and ensure the normal operation of the lifting plate 402.

[0063] In this embodiment, as Figure 8 As shown, a vertical rod 408 that slides with the fixing block 407 is also provided at the bottom center of the fixing plate 401. The vertical rod 408 is provided for installing the third spring 406.

[0064] In this embodiment, as Figure 8 As shown, a third spring 406 is sleeved on the upright 408. The third spring 406 is located between the fixed block 407 and the fixed plate 401, ensuring that the third spring 406 can provide power for the movement of the lifting plate 402.

[0065] The mounting component 4 is used to fix and install the insulation resistance meter. The lifting plate 402, the upright rod 408 and the third spring 406 can serve as a buffer to prevent damage to the meter dial when it falls face down, thus greatly ensuring the safety of the insulation resistance meter.

[0066] In this embodiment, as Figure 8 As shown, a bend 403 is provided at the top of the lifting plate 402 to restrict the insulation resistance meter, prevent the insulation resistance meter from falling out of the box 1, and ensure the safety of the insulation resistance meter.

[0067] An electronic insulation resistance meter includes the shock-resistant structure for electronic insulation resistance meters described above.

[0068] Its working process is as follows: When the dial falls face down, the first thing to come into contact with the ground is the push rod 3017. The movement of the push rod 3017 causes the lifting rod 3015 to move. The movement of the lifting rod 3015 causes the sliding column 308 at the end of the rotating arm 307 to move along the waist-shaped hole 3018. The rotation of the rotating arm 307 causes the rotating shaft 3010 to rotate. The rotation of the rotating shaft 3010 causes the first rotating rod 309 and the second rotating rod 3011 to rotate. The rotation of the first rotating rod 309 and the second rotating rod 3011 causes the lifting plate 301 to move towards the side closer to the bottom of the box 1. The second spring 509 on the fixing part 5 and the third spring 406 on the mounting part 4 can drive the insulation resistance meter to move towards the side closer to the lifting plate 301 until the bottom of the insulation resistance meter contacts the lifting plate 301, thereby achieving the purpose of sinking the insulation resistance meter towards the bottom of the box 1.

[0069] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the scope defined by the structure of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. An impact-resistant structure for an electronic insulation resistance meter, comprising a housing and a protective plate, characterized in that, The box is equipped with cushioning components, fixing components, and mounting components, with the cushioning components located inside the box. The buffer includes a lifting plate, a rotating assembly, a guide rod, a sliding assembly, a first spring, and a sliding block. The lifting plate, rotating assembly, guide rod, first spring, and sliding block are symmetrically arranged on both sides of the center line of the box. The rotating assembly is rotatably mounted on the inner wall of the box. The lifting plate is symmetrically arranged on both sides of the rotating assembly. The guide rod is fixedly mounted on the inner wall of the box. A rotating arm is also provided on the rotating assembly. The sliding assembly cooperates with the rotating arm. The first spring is sleeved on the guide rod. The sliding block is slidably mounted on the guide rod and cooperates with the rotating assembly. The protective plates are symmetrically arranged at the upper and lower ends of the box, and the fixing parts and mounting parts are respectively arranged at the upper and lower ends of the box, with the fixing parts cooperating with the mounting parts to fix the resistance meter.

2. The shock-resistant structure for an electronic insulation resistance meter according to claim 1, characterized in that, A fixing groove is formed on the inner wall of the box, and a strip groove is formed on the inner wall of the fixing groove. The guide rod is symmetrically arranged on the two inner walls of the strip groove, and the sliding block is slidably mounted on the guide rod.

3. The shock-resistant structure for an electronic insulation resistance meter according to claim 1, characterized in that, The rotating assembly includes a first rotating rod, a second rotating rod, and a rotating shaft. One end of the first rotating rod and the second rotating rod are fixedly connected, and there is an included angle between the first rotating rod and the second rotating rod. The lifting plate is rotatably mounted on the other end of the first rotating rod. The rotating shaft is fixedly mounted at the connection between the first rotating rod and the second rotating rod, and the rotating shaft is rotatably mounted on the inner wall of the box.

4. The shock-resistant structure for an electronic insulation resistance meter according to claim 3, characterized in that, An installation groove is provided on the outer wall of the housing. The rotating arm is set in the installation groove. One end of the rotating arm is fixedly installed on the rotating shaft. A strip hole is provided at the other end of the second rotating rod. A fixing post is fixedly installed on the sliding block. The fixing post slides in conjunction with the strip hole.

5. The shock-resistant structure for an electronic insulation resistance meter according to claim 4, characterized in that, The sliding assembly includes a lifting rod, a guide plate, a push rod, and a sliding sleeve. The sliding sleeve is fixedly installed on one side of the middle part of the lifting rod. The two ends of the guide plate are fixedly installed on the two inner walls of the mounting groove. The sliding sleeve slides in cooperation with the guide plate. There are waist-shaped holes on both sides of the center line of the lifting rod. A sliding post is provided on the other end of the rotating arm. The sliding post is slidably installed in the waist-shaped hole. The push rod is fixedly installed on one side of the lifting rod. One end of the push rod passes through the side wall of the mounting groove and extends to the outside of the mounting groove.

6. The shock-resistant structure for an electronic insulation resistance meter according to claim 1, characterized in that, The protective plate has an arc-shaped structure and a wear-resistant layer.

7. The shock-resistant structure for an electronic insulation resistance meter according to claim 1, characterized in that, The fixing component includes a threaded rod, movable blocks symmetrically arranged on both sides of the center line of the threaded rod, a connecting rod, and a push plate. A groove is opened on the inner wall of the top of the box. The threaded rod is rotatably installed on the inner wall of the groove, and one end of the threaded rod extends through the box to the outside of the box. The threads on both sides of the center line of the threaded rod have opposite directions. The movable blocks are threadedly connected to the threaded rod. The connecting rod is symmetrically arranged on the upper and lower sides of the movable blocks, and both ends of the connecting rod are rotatably connected to the movable blocks and the push plate, respectively.

8. The shock-resistant structure for an electronic insulation resistance meter according to claim 7, characterized in that, The fixing component also includes a sliding plate, a second spring, guide rods symmetrically arranged on both sides of the center line of the push plate, and a fixing rod arranged on the bottom center line of the push plate. A side ear and a protrusion are installed on one side of the sliding plate. The side ears are symmetrically arranged on both sides of the center line of the sliding plate, and the side ears on the same side are arranged one above the other on the upper and lower sides of the push plate. The side ears are slidably connected to the guide rods. The protrusion is fixedly installed in the middle of one side of the sliding plate and is slidably connected to the fixing rod. The second spring is sleeved on the fixing rod and is located between the push plate and the protrusion. A baffle is also provided on the top of the sliding plate, and an internal hex bolt is provided at the end of the threaded rod.

9. The shock-resistant structure for an electronic insulation resistance meter according to claim 8, characterized in that, The mounting components include a fixed plate, a lifting plate, a fixed block installed in the middle of one side of the lifting plate, and sliders on both sides of the fixed block. Mounting rods that slide with the sliders are provided on both sides of the center line of the fixed plate. A vertical rod that slides with the fixed block is also provided at the bottom middle of the fixed plate. A third spring is sleeved on the vertical rod. The third spring is located between the fixed block and the fixed plate. A bend is provided at the top of the lifting plate.

10. An electronic insulation resistance meter, characterized in that, This includes the shock-resistant structure for an electronic insulation resistance meter as described in claims 1-9.

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