Anti-static grounding instrument
By designing storage slots and frames on the outer casing of the grounding instrument, combined with winding and adjustment components, the problem of damage caused by irregular grounding wire storage is solved, thus achieving convenient use of the grounding instrument and improved testing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 国家粮食和物资储备局广东局七三三处
- Filing Date
- 2025-03-31
- Publication Date
- 2026-04-21
AI Technical Summary
In the use of existing assembled grounding resistance testers, the irregular winding and coiling of the grounding wire can easily lead to component damage, and there is a lack of effective protection measures.
An anti-static grounding device was designed, which connects the grounding device body and the grounding wire with alligator clamps. The grounding device shell is equipped with a storage slot and a storage frame, and has a built-in winding assembly and adjustment assembly, including a bidirectional screw, a rotating rod, a sliding rod and a sliding bar. The stable winding and adjustment of the grounding wire is achieved through a clamping slot, a clamping block and a return spring.
It improves the protective effect of the grounding wire, enhances the ease of use and testing effect of the grounding instrument, adapts to grounding wires of different lengths, and ensures stable winding and quick disassembly of the grounding wire.
Smart Images

Figure CN224152565U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grounding instrument technology, and in particular to an anti-static grounding instrument. Background Technology
[0002] An antistatic grounding device is a device used to monitor and ensure the safe discharge of static electricity. It is based on the basic principles of electrostatics and electricity. When an object is charged, the charge can be introduced into the ground through proper grounding, thereby eliminating static electricity. The device evaluates the effectiveness of static grounding by measuring the grounding resistance. During operation, the device sends a small current through the grounding system and then measures the grounding resistance value. This value reflects the conductivity of the grounding system, thus allowing the determination of the effectiveness of static grounding.
[0003] In the prior art, there is a prefabricated grounding resistance tester (publication number: CN220691018U), which includes a grounding resistance tester body. A base is provided at the bottom of the grounding resistance tester body, and limit rings are provided on the left and right sides of the base. A lifting slide plate is installed inside the limit rings, and a lower support plate is provided at the bottom of the lifting slide plate. An anti-slip pad is provided at the bottom of the lower support plate. A limit bolt is provided at the middle of the outer side of the limit rings. The lifting slide plate is slidably connected to the limit rings, thereby facilitating the adjustment of the distance between the base and the support plate. Furthermore, the limit bolt and threaded groove facilitate the connection between the lifting slide plate and the limit rings. The lower support plate and anti-slip pad provide support for the lifting slide plate and the grounding resistance tester body from below, thus allowing for convenient adjustment of the height of the grounding resistance tester body during use, facilitating testing by inspection workers.
[0004] During the use of this assembled grounding resistance tester, the protection of the grounding wire connecting the tester to the outside world is insufficient. When storing the grounding wire, the winding of the grounding wire is irregular, which can easily cause damage to the internal components of the grounding wire. Utility Model Content
[0005] To address the problems existing in the background technology, an anti-static grounding device is proposed.
[0006] This utility model proposes an anti-static grounding device, including a grounding device body, which is set inside a grounding device shell. The grounding device body is connected to the outside via a grounding wire and alligator clamps for measuring the grounding resistance value and inferring the effect of static grounding. A storage groove is provided on the grounding device shell, and a storage frame is slidably installed in the storage groove. The grounding wire connected to the grounding device body can be stored by the storage frame and the storage groove. A winding assembly is provided in the storage frame for winding the grounding wire. An adjustment assembly is provided on the storage frame, which uses a bidirectional screw as the adjustment element for adjusting the winding assembly to accommodate grounding wires of different lengths.
[0007] Preferably, the storage slot has a retaining groove, the storage frame has an adjustment groove, a retaining block is slidably installed in the adjustment groove, one side of the retaining block extends into the retaining groove and fits into the retaining groove, the storage frame is provided with a push button, the push button is connected to the retaining block, and a return spring is provided in the adjustment groove, the return spring is connected to the retaining block, which is used to ensure the stable connection between the retaining block and the retaining groove.
[0008] Preferably, one side of the outer wall of the retaining block is set as a slope, so that the retaining block can be easily retracted into the adjustment groove during the process of pushing the storage frame into the storage groove.
[0009] Preferably, the adjustment assembly consists of a bidirectional screw, a rotating rod, a sliding rod, and two sliding bars. The bidirectional screw is rotatably mounted inside the storage frame, the rotating rod is rotatably mounted on the storage frame, the sliding rod is mounted on the storage frame, and both sliding bars are located inside the storage frame. Both sliding bars are threadedly connected to the bidirectional screw and slidably connected to the sliding rod. The two sliding bars are symmetrically arranged, and the rotating rod and the bidirectional screw are connected by gear meshing.
[0010] Preferably, the winding assembly consists of two winding units, which are respectively disposed on two sliding bars, and the winding units are in the shape of I-shaped turntables.
[0011] Preferably, the winding unit is provided with a rubber arc plate to provide protection for the grounding wire when it is wound.
[0012] Preferably, a plug is installed on the sliding bar, and the plug is provided with a socket for storing and protecting the grounding wire end.
[0013] Compared with the prior art, the present invention has the following beneficial technical effects:
[0014] When in use, this antistatic grounding device can be equipped with a storage slot and a storage frame to wind and store the grounding wire that connects the grounding device body to the outside world, thereby improving the protection effect of the grounding wire and ensuring the detection effect of the grounding device body.
[0015] The distance between the two winding units can be adjusted by rotating the rod and using the double screw. This allows the distance between the winding units to be adjusted according to different grounding wire lengths, thus improving the applicability of the entire winding assembly.
[0016] The installation and removal of the storage frame can be completed quickly by using the retaining slot, retaining block, reset spring and push button, which improves the ease of use of the entire anti-static grounding device. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the grounding device housing in this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the storage frame in this utility model;
[0020] Figure 4 This is a cross-sectional view of the storage frame in this utility model.
[0021] Reference numerals in the attached diagram: 1. Grounding instrument housing; 2. Storage slot; 3. Holding slot; 4. Storage frame; 6. Adjustment slot; 7. Holding block; 8. Push button; 9. Return spring; 10. Bidirectional screw; 11. Rotating rod; 12. Sliding rod; 13. Sliding bar; 14. Winding assembly; 15. Rubber arc plate; 16. Insert block. Detailed Implementation
[0022] like Figures 1-4 As shown, this utility model proposes an anti-static grounding device, including a grounding device body, which is housed inside a grounding device housing 1. The grounding device body is connected to the outside via a grounding wire and alligator clamps for measuring the grounding resistance value and inferring the effectiveness of static grounding. A storage groove 2 is provided on the grounding device housing 1, and a storage frame 4 is slidably installed inside the storage groove 2. The grounding wire connecting the grounding device body to the outside can be stored through the storage frame 4 and the storage groove 2. A winding assembly 14 is provided inside the storage frame 4 for winding the wire. Component 14 is used for winding the grounding wire. The storage frame 4 is equipped with an adjustment component. The adjustment component uses a bidirectional screw 10 as the adjustment element to adjust the winding component 14 to accommodate grounding wires of different lengths. The winding component 14 consists of two winding units, which are respectively set on two sliding bars 13. The winding units are in the shape of I-shaped turntables and are connected to the sliding bars 13 by bolts. The winding units are equipped with rubber arc plates 15 to provide protection for the grounding wire when winding it.
[0023] The storage slot 2 has a retaining slot 3, and the storage frame 4 has an adjustment slot 6. A retaining block 7 is slidably installed in the adjustment slot 6. One side of the retaining block 7 extends into the retaining slot 3 and is adapted to the retaining slot 3. A push button 8 is provided on the storage frame 4 and is connected to the retaining block 7. A return spring 9 is provided in the adjustment slot 6 and is connected to the retaining block 7 to ensure the stable connection between the retaining block 7 and the retaining slot 3. One side of the outer wall of the retaining block 7 is beveled to facilitate the retraction of the retaining block 7 into the adjustment slot 6 when the storage frame 4 is pushed into the storage slot 2.
[0024] The adjustment assembly consists of a bidirectional screw 10, a rotating rod 11, a sliding rod 12, and two sliding bars 13. The bidirectional screw 10 is rotatably mounted inside the storage frame 4. A limiting ring is fixedly sleeved on the bidirectional screw 10 to limit the movement of the sliding bars 13. The rotating rod 11 is rotatably mounted on the storage frame 4, and the sliding rod 12 is mounted on the storage frame 4. Both sliding bars 13 are set inside the storage frame 4 and are threadedly connected to the bidirectional screw 10. Both sliding bars 13 are slidably connected to the sliding rod 12 and are symmetrically arranged. The rotating rod 11 is connected to the bidirectional screw 10 through gear meshing. A bevel gear one is wound around the bottom end of the rotating rod 11, and a bevel gear two is sleeved on the bidirectional screw 10. The bevel gear one and the bevel gear two are meshed together. A rotating wheel is provided on the rotating rod 11.
[0025] A plug 16 is installed on the sliding bar 13. The plug 16 has a socket for storing and protecting the grounding wire end.
[0026] In this embodiment, under normal conditions, the grounding wire on the grounding device body used for connecting to the outside is placed in the storage slot 2. Specifically, the grounding wire is wound on the winding assembly 14. In this way, the grounding wire can be protected by the storage slot 2 and the storage frame 4, and the connector on the grounding wire is inserted into the socket to protect the grounding wire head.
[0027] When in use, pull the two push buttons 8 to move them closer to each other, causing the two retaining blocks 7 to disengage from the two retaining slots 3 respectively. Then, pull the storage frame 4 to extend out of the storage slot 2. After that, the grounding wire can be removed from the winding assembly 14 and it can be used.
[0028] When winding the grounding wire, the winding assembly 14 can be adjusted according to the length of the grounding wire. Specifically, rotating the rotating rod 11 drives the bidirectional screw 10 to rotate through the gear, thereby adjusting the distance between the two corresponding winding units. This increases the distance between the two winding units, allowing for the winding of a longer grounding wire and improving the applicability of the entire winding assembly 14.
[0029] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.
Claims
1. An anti-static grounding device, comprising a grounding device body, the grounding device body being disposed inside a grounding device housing (1), the grounding device body being connected to the outside via a grounding wire and alligator clamps, for measuring the value of grounding resistance and inferring the effect of electrostatic grounding, characterized in that, The outer casing (1) of the grounding instrument is provided with a storage groove (2), and a storage frame (4) is slidably installed in the storage groove (2). The grounding wire connecting the grounding instrument body to the outside can be stored by the storage frame (4) and the storage groove (2). The storage box (4) is equipped with a winding assembly (14), which is used for winding the grounding wire. The storage box (4) is equipped with an adjustment assembly, which uses a bidirectional screw (10) as the adjustment element to adjust the winding assembly (14) to adapt to different lengths of grounding wire.
2. The anti-static grounding device of claim 1, wherein, The storage slot (2) has a retaining slot (3) and the storage frame (4) has an adjustment slot (6). A retaining block (7) is slidably installed in the adjustment slot (6). One side of the retaining block (7) extends into the retaining slot (3) and is adapted to the retaining slot (3). A push button (8) is provided on the storage frame (4). The push button (8) is connected to the retaining block (7). A reset spring (9) is provided in the adjustment slot (6). The reset spring (9) is connected to the retaining block (7) to ensure the stable connection between the retaining block (7) and the retaining slot (3).
3. The anti-static grounding device of claim 2, wherein, The outer wall of one side of the retaining block (7) is set as a slope, so that the retaining block (7) can be easily retracted into the adjustment groove (6) during the process of pushing the storage frame (4) into the storage groove (2).
4. The anti-static grounding device of claim 1, wherein, The adjustment assembly consists of a bidirectional screw (10), a rotating rod (11), a sliding rod (12), and two sliding bars (13). The bidirectional screw (10) is rotatably installed inside the storage frame (4), the rotating rod (11) is rotatably installed on the storage frame (4), the sliding rod (12) is installed on the storage frame (4), and the two sliding bars (13) are both set inside the storage frame (4). The two sliding bars (13) are threadedly connected to the bidirectional screw (10), and the two sliding bars (13) are slidably connected to the sliding rod (12). The two sliding bars (13) are symmetrically arranged, and the rotating rod (11) is connected to the bidirectional screw (10) through gear meshing.
5. The anti-static grounding device of claim 4, wherein, The winding assembly (14) consists of two winding units, which are respectively set on two sliding bars (13). The winding units are in the shape of I-shaped turntables.
6. The anti-static grounding device of claim 5, wherein, The winding unit is equipped with a rubber arc plate (15) to provide protection for the grounding wire when winding the grounding wire.
7. The anti-static grounding device of claim 4, wherein, A plug (16) is installed on the sliding bar (13), and the plug (16) is provided with a socket for storing and protecting the grounding wire end.
Citation Information
Patent Citations
Assembly type grounding resistance tester
CN220691018U