Grounding structure of current sensor
Through the combined structure of the plug plate, sleeve, spring and cross-insert block, the problem of the nut and bolt releasing in the vibration state of the traditional current sensor is solved, and the stability and safety of the ground connection of the current sensor is achieved.
Patent Information
- Application Number
- CN202422261558.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-14
AI Technical Summary
In the vibration state, the nuts and bolts of the traditional current sensor are easily retiring, resulting in separation between the ground wire and the mounting base, posing a safety hazard.
The combined structure of plug plate, sleeve, spring and cross insert block is adopted. Through the tension of the spring and the limit of the cross insert block, the bolts are prevented from being re-wired and ensures the connection is stable.
Effectively prevent bolts from being re-wired, ensure the stability and safety of the ground connection of the current sensor, and the operation is simple and convenient.
Smart Images
Figure CN223123088U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic component installation, and particularly relates to a grounding structure of a current sensor. Background Art
[0002] The grounding installation of a current sensor is an important link to ensure its accurate measurement and stable operation. The following is a brief description of the key points of its grounding installation:
[0003] Correct grounding: The current sensor should be correctly grounded to avoid interference and errors. This usually means that the sensor should be connected to the grounding system of the measured circuit to ensure electrical safety and signal stability;
[0004] Follow standards: The grounding installation should follow relevant electrical standards and specifications to ensure safety and reliability. This may include using appropriate grounding materials and connection methods, and ensuring that the grounding resistance meets the specified requirements;
[0005] Reduce interference: Grounding also helps to reduce the influence of external electromagnetic interference on the measurement accuracy of the sensor. Therefore, special attention should be paid to avoiding placing the sensor near strong magnetic fields during installation, such as around equipment such as motors and transformers;
[0006] Regular inspection: The grounding connection should be regularly inspected to ensure its integrity and effectiveness. Any loose or damaged grounding connection should be repaired in time to avoid potential safety risks and measurement errors.
[0007] In the process of implementing this solution, the inventor found that the following problems in the prior art have not been well solved: The grounding coil of the traditional current sensor is connected to the seat body by a bolt passing through it and a gasket and then through the mounting seat body and threaded connection with a nut, which is a connection method of extrusion and limitation to achieve the grounding effect. However, in some working states with a large amount of frequent vibration, the extrusion between the nut and the bolt is very likely to cause the thread to retreat, and then the grounding wire and the mounting seat are separated, resulting in unnecessary safety hazards. Summary of the Utility Model
[0008] The main purpose of the utility model is to provide a grounding structure of a current sensor, which can effectively solve the problems in the background art.
[0009] To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0010] A grounding structure for a current sensor, comprising a mounting base, a bolt, a gasket, and a ground wire connecting piece. The gasket is located above the ground wire connecting piece, the ground wire connecting piece is located at the top of the mounting base, the bolt penetrates through the gasket, the ground wire connecting piece, and the mounting base, and a nut is threadedly connected to the outer wall of one end of the bolt at the bottom of the mounting base. Backplates are fixed on the bottom side walls of the mounting base on both sides of the nut. End plates are fixed at the four corners of the side of the backplates close to each other. Limiting shafts are fixed between two perpendicular end plates. Sleeves are sleeved and slid on the outer walls of the tops of the limiting shafts. Springs are sleeved on the outer walls of the bottoms of the limiting shafts. Plug plates are fixed between two parallel sleeves. L-shaped seats are fixed at the bottoms of the plug plates. A bottom cover is fixed at the bottom between the L-shaped seats. A cross-shaped insertion block is fixed inside the bottom cover. A cross-shaped bottom groove is drilled at the bottom of one end of the bolt passing through the nut.
[0011] Preferably, the plug plates are respectively embedded between the bottom side wall of the mounting base and the nut.
[0012] Preferably, the bottoms of the sleeves are respectively in contact with the tops of the springs.
[0013] Preferably, the outer dimensions of the cross-shaped insertion block match the inner dimensions of the cross-shaped bottom groove, and the cross-shaped insertion block is inserted into the cross-shaped bottom groove.
[0014] Preferably, a pull ring is fixed at the bottom of the bottom cover.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] 1. When the bolt penetrates through the gasket, the ground wire connecting piece, and the mounting base and is threadedly connected to the nut, the basic limiting connection is completed. At this time, the sleeves at both ends of the plug plate will be pushed up by the tension of the spring, so that the plug plate can be inserted between the inner side wall of the bottom of the mounting base and the outer wall of the nut. When the nut rotates and loosens, it can touch the plug plate, so that it cannot rotate and loosen, playing an effective protection role.
[0017] 2. The rising of the plug plate will drive the bottom cover to rise through the L-shaped seat, and the rising of the bottom cover will drive the cross-shaped insertion block to be inserted into the cross-shaped bottom groove. When the bolt rotates and loosens, it can be limited by the cross-shaped insertion block, so that it cannot rotate and loosen, playing an effective protection role.
[0018] 3. When it is necessary to disassemble the bolt and the nut, by pulling down the pull ring, the bottom cover, the plug plate, and the sleeve will descend. The sleeve can compress the spring. At this time, the plug plate will move away from between the mounting base and the nut, and the cross-shaped insertion block will be withdrawn from the cross-shaped bottom groove, so that the bolt or the nut can be disassembled by rotation, and the ground wire connecting piece can be removed. The operation is simple and convenient. Description of the Drawings
[0019] Figure 1 It is a top - view structural schematic diagram of a grounding structure of a current sensor of the present utility model;
[0020] Figure 2 It is a bottom - view structural schematic diagram of a grounding structure of a current sensor of the present utility model;
[0021] Figure 3 It is a structural schematic diagram of a grounding structure of a current sensor of the present utility model except for the mounting base and the nut;
[0022] Figure 4 It is an enlarged structural schematic diagram at position A of a grounding structure of a current sensor of the present utility model.
[0023] In the figure: 1. Mounting base; 2. Bolt; 21. Cross - shaped bottom groove; 3. Gasket; 4. Ground wire connecting piece; 5. Nut; 6. Back plate; 7. End plate; 8. Limiting shaft; 9. Spring; 10. Plug plate; 11. Sleeve; 12. Bottom cover; 13. Cross - shaped insert block; 14. L - shaped seat; 15. Pull ring. Specific embodiments
[0024] To make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further elaborated below in conjunction with specific embodiments.
[0025] As Figures 1-4 shown, a grounding structure of a current sensor includes a mounting base 1, a bolt 2, a gasket 3, and a ground wire connecting piece 4. The gasket 3 is located above the ground wire connecting piece 4, the ground wire connecting piece 4 is located at the top of the mounting base 1. The bolt 2 penetrates through the gasket 3, the ground wire connecting piece 4, and the mounting base 1, and a nut 5 is threadedly connected to the outer wall of one end of the bolt 2 at the bottom of the mounting base 1. Back plates 6 are fixedly arranged on the bottom side walls of the mounting base 1 on both sides of the nut 5. End plates 7 are fixedly arranged at the four corners of the side of the back plates 6 close to each other. Limiting shafts 8 are fixedly arranged between two mutually perpendicular end plates 7. Sleeves 11 are sleeved and slidably arranged on the outer walls of the tops of the limiting shafts 8. Springs 9 are sleeved on the outer walls of the bottoms of the limiting shafts 8. Plug plates 10 are fixedly arranged between two mutually parallel sleeves 11. L - shaped seats 14 are fixedly arranged at the bottoms of the plug plates 10. A bottom cover 12 is fixedly arranged at the bottom between the L - shaped seats 14. A cross - shaped insert block 13 is fixedly arranged inside the bottom cover 12. A cross - shaped bottom groove 21 is dug at the bottom of one end of the bolt 2 passing through the nut 5.
[0026] Specifically, the plug plates 10 are respectively embedded between the bottom side wall of the mounting base 1 and the nut 5, which can play a role in restricting the rotation of the nut 5.
[0027] Specifically, the bottoms of the sleeves 11 are respectively in contact with the tops of the springs 9, which can play a role in pushing the sleeves 11 upwards.
[0028] Specifically, the outer dimensions of the cross-shaped insert block 13 match the inner dimensions of the cross-shaped bottom groove 21, and the cross-shaped insert block 13 is inserted into the interior of the cross-shaped bottom groove 21, which can limit the rotation of the bolt 2.
[0029] Specifically, a pull ring 15 is fixed to the bottom of the bottom cover 12, which facilitates pulling down the bottom cover 12.
[0030] Working principle: When the bolt 2 passes through the gasket 3, the ground wire connecting piece 4, and the mounting seat 1 and is threadedly connected to the nut 5, the basic limit connection is completed. At this time, the sleeves 11 at both ends of the plug plate 10 will be pushed upward by the tension of the spring 9, so that the plug plate 10 can be inserted between the inner side wall of the bottom of the mounting seat 1 and the outer wall of the nut 5. When the nut 5 rotates backward, it can touch the plug plate 10, so that it cannot rotate backward, playing an effective protection role. The upward movement of the plug plate 10 will drive the bottom cover 12 to rise through the L-shaped seat 14, and the upward movement of the bottom cover 12 will drive the cross-shaped insert block 13 to be inserted into the interior of the cross-shaped bottom groove 21. When the bolt 2 rotates backward, it can be limited by the cross-shaped insert block 13 so that it cannot rotate backward, playing an effective protection role. When it is necessary to disassemble the bolt 2 and the nut 5, by pulling down the pull ring 15, the bottom cover 12, the plug plate 10, and the sleeve 11 will descend. The sleeve 11 can compress the spring 9. At this time, the plug plate 10 will move away from between the mounting seat 1 and the nut 5, and the cross-shaped insert block 13 will be withdrawn from the cross-shaped bottom groove 21, so that the bolt 2 or the nut 5 can be disassembled by rotation, and the ground wire connecting piece 4 can be removed. The operation is simple and convenient.
[0031] The circuits, electronic components, and control modules involved are all prior arts, which can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve improvements to software and methods either.
[0032] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A grounding structure for a current sensor, comprising a mounting base (1), a bolt (2), a gasket (3), and a ground wire connecting piece (4), characterized in that: The gasket (3) is located above the ground wire connecting piece (4), the ground wire connecting piece (4) is located at the top of the mounting base (1), the bolt (2) penetrates through the gasket (3), the ground wire connecting piece (4), and the mounting base (1), and a nut (5) is threadedly connected to the outer wall of one end of the bolt (2) at the bottom of the mounting base (1). Back plates (6) are fixed to the bottom side walls of the mounting base (1) on both sides of the nut (5). End plates (7) are fixed to the four corners of the side of the back plates (6) close to each other. Limiting shafts (8) are fixed between two perpendicular end plates (7). Sleeves (11) are sleeved and slid on the outer walls of the tops of the limiting shafts (8). Springs (9) are sleeved on the outer walls of the bottoms of the limiting shafts (8). Plug plates (10) are fixed between two parallel sleeves (11). L-shaped seats (14) are fixed to the bottoms of the plug plates (10). A bottom cover (12) is fixed to the bottom between the L-shaped seats (14). A cross-shaped insert block (13) is fixed inside the bottom cover (12). A cross-shaped bottom groove (21) is drilled at the bottom of one end of the bolt (2) passing through the nut (5).
2. The grounding structure of a current sensor according to claim 1, characterized in that: The plug plates (10) are respectively embedded between the bottom side wall of the mounting base (1) and the nut (5).
3. The grounding structure of a current sensor according to claim 1, characterized in that: The bottoms of the sleeves (11) are respectively in contact with the tops of the springs (9).
4. A grounding structure of a current sensor according to claim 1, characterized in that: The outer dimension of the cross-shaped insert block (13) matches the inner dimension of the cross-shaped bottom groove (21), and the cross-shaped insert block (13) is inserted into the inside of the cross-shaped bottom groove (21).
5. A grounding structure of a current sensor according to claim 1, characterized in that: A pull ring (15) is fixed to the bottom of the bottom cover (12).