A pressure plate for measuring current, voltage drop and resistance
By designing a pressure plate for measuring current, voltage drop, and resistance, and adopting a large substrate and soft copper strip structure, the problems of cumbersome operation and poor contact in the traditional four-wire measurement method are solved, and efficient and reliable current, voltage drop, and resistance measurement is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional four-wire measurement methods are cumbersome to operate when measuring current, voltage drop and resistance. Poor contact leads to increased contact resistance, affecting measurement accuracy. Furthermore, repeated disassembly and reassembly of the wires can cause terminal wear, increasing maintenance costs.
Design a pressure plate for measuring current, voltage drop, and resistance. It adopts a structure of a large base plate, a wide soft copper strip, and a large pressure plate. The tester is connected through current and voltage bolts. The wide and narrow soft copper strips are pressed into contact with the current and voltage ends of the workpiece, respectively. The distance of the sliding small base plate can be adjusted to accommodate different spacings. The handle bolts fix the position.
It improves measurement efficiency, ensures good contact, reduces operating steps, lowers the risk of terminal wear, and reduces maintenance costs.
Smart Images
Figure CN224436383U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical measurement component technology, specifically a pressure plate for measuring current, voltage drop and resistance. Background Technology
[0002] When measuring the current, voltage drop, and resistance of some workpieces, it is necessary to connect the terminals of the workpiece to the tester with wires and use the four-wire measurement method. However, the current four-wire measurement method still has certain defects in its implementation, such as:
[0003] Traditional wiring methods require separate connections to the current and voltage terminals, which is cumbersome and time-consuming. Poor contact at high-current terminals can easily lead to increased contact resistance, affecting measurement accuracy. Repeated disassembly and reassembly of wires during field testing can cause terminal wear, increasing maintenance costs. Therefore, a pressure plate for measuring current, voltage drop, and resistance is proposed to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a pressure plate for measuring current, voltage drop, and resistance, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a pressure plate for measuring current, voltage drop and resistance, comprising: a large substrate, a large pad, a wide soft copper strip and a large pressure plate;
[0006] A large pad is fixedly connected to the front of the large substrate. A wide soft copper strip abuts against the outer side of the large pad. The wide soft copper strip abuts against the large substrate, and a large pressure plate abuts against the front of the wide soft copper strip. A small substrate abuts against the upper surface of the large substrate. A small pad is fixedly connected to the front of the small substrate, and the small pad abuts against the top of the large pad.
[0007] Preferably, the front of the small pad abuts against a narrow soft copper strip, and the narrow soft copper strip abuts against the front of the small substrate.
[0008] Preferably, the front part of the narrow soft copper strip abuts against a small pressure plate.
[0009] Preferably, a fixing bolt a is connected through the small substrate, the narrow soft copper strip and the small pressure plate, and a voltage bolt is connected through the small substrate, the narrow soft copper strip and the small pressure plate near the fixing bolt a.
[0010] Preferably, a fixing bolt b is connected through the large substrate, the wide soft copper strip, and the large pressure plate, and a current bolt is connected through the large substrate, the wide soft copper strip, and the large pressure plate near the fixing bolt b.
[0011] Preferably, a sliding plate is slidably inserted through the small substrate, and the sliding plate is connected to the upper surface of the large substrate by screws.
[0012] Preferably, a limiting groove is formed in the sliding plate, and a limiting rod is slidably connected in the limiting groove. The limiting rod is connected to the inner wall of the small base plate by screws.
[0013] Preferably, the back of the skateboard abuts against a handle bolt, which is threaded onto the rear inner wall of the small substrate.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. The pressure plate for measuring current, voltage drop, and resistance connects the current terminal of the tester to the current pin and the voltage terminal to the voltage pin. Then, a wide soft copper strip is pressed onto the current terminal of the workpiece, and a narrow soft copper strip is pressed onto the voltage terminal of the workpiece, which quickly connects to the workpiece and improves the detection efficiency.
[0016] 2. The pressure plate for measuring current, voltage drop, and resistance is designed to increase adaptability by loosening the handle bolt and sliding the small base plate according to the distance between the current terminal and voltage terminal on the workpiece, allowing the wide soft copper strip to abut against the current terminal and the narrow soft copper strip to abut against the voltage terminal, and then tightening the handle bolt to fix the position of the small base plate. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the large substrate of this utility model;
[0019] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the small substrate of this utility model;
[0020] Figure 4 This is a three-dimensional exploded structural diagram of the present invention.
[0021] In the diagram: 1. Large substrate; 2. Large pad; 3. Wide soft copper strip; 4. Large pressure plate; 5. Small substrate; 6. Small pad; 7. Narrow soft copper strip; 8. Small pressure plate; 9. Fixing bolt a; 10. Voltage bolt; 11. Fixing bolt b; 12. Current bolt; 13. Slide plate; 14. Limiting groove; 15. Limiting rod; 16. Handle bolt. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figures 1-4 This utility model provides a technical solution: a pressure plate for measuring current, voltage drop and resistance, comprising: a large substrate 1, a large pad 2, a wide soft copper strip 3 and a large pressure plate 4; the large pad 2 is fixedly connected to the front of the large substrate 1, the wide soft copper strip 3 abuts against the outer side of the large pad 2, the wide soft copper strip 3 abuts against the large substrate 1, and the front of the wide soft copper strip 3 abuts against the large pressure plate 4; the upper surface of the large substrate 1 abuts against the small substrate 5, the front of the small substrate 5 is fixedly connected to the small pad 6, and the small pad 6 abuts above the large pad 2.
[0024] The pressure plate for measuring current, voltage drop, and resistance, including the large base plate 1, large pad plate 2, small base plate 5, and small pad plate 6, can be made of plastic for insulation. The large pressure plate 4 can be made of conductive materials such as aluminum and is used to press the wide soft copper strip 3 onto the large base plate 1. Pressure is applied manually or by a pressure device to press the wide soft copper strip 3 onto the workpiece. Because the wide soft copper strip 3 has a certain degree of flexibility, good contact can be ensured even when the workpiece surface is uneven when pressure is applied.
[0025] exist Figure 1 and Figure 4 In the middle, the front part of the small pad 6 abuts against the narrow soft copper strip 7, and the narrow soft copper strip 7 abuts against the front part of the small substrate 5.
[0026] The pressure plate for measuring current, voltage drop, and resistance has a certain degree of flexibility. When the narrow soft copper strip 7 is pressed onto the workpiece, good contact can be ensured even when the workpiece surface is uneven.
[0027] exist Figure 1 and Figure 4 In the middle, the front part of the narrow soft copper strip 7 abuts against a small pressure plate 8.
[0028] The pressure plate for measuring current, voltage drop, and resistance, the small pressure plate 8 can be made of conductive materials such as aluminum, and is used to press the narrow soft copper strip 7 onto the small substrate 5.
[0029] exist Figure 1 and Figure 4 In the middle, a fixing bolt a9 is connected through the small substrate 5, the narrow soft copper strip 7 and the small pressure plate 8, and a voltage bolt 10 is connected through the small substrate 5, the narrow soft copper strip 7 and the small pressure plate 8 near the fixing bolt a9.
[0030] The pressure plate for measuring current, voltage drop, and resistance, with bolts for fixing pin a9 and voltage pin 10 passing through the small substrate 5, narrow soft copper strip 7, and small pressure plate 8, has nuts pressing against the back of the small substrate 5, squeezing the small substrate 5, narrow soft copper strip 7, and small pressure plate 8 together for conductivity. The voltage pin 10 has two sets of nuts, one set used to squeeze the small substrate 5, narrow soft copper strip 7, and small pressure plate 8 together with the bolts, and the other set of bolts used to squeeze external wires.
[0031] exist Figure 1 and Figure 4 In the middle, a fixing bolt b11 is connected through the large substrate 1, the wide soft copper strip 3 and the large pressure plate 4, and a current bolt 12 is connected through the large substrate 1, the wide soft copper strip 3 and the large pressure plate 4 near the fixing bolt b11.
[0032] The pressure plate for measuring current, voltage drop, and resistance, with bolts for fixing pins b11 and current pin 12 passing through the large base plate 1, wide soft copper strip 3, and large pressure plate 4, has nuts pressing against the back of the large base plate 1, squeezing the large base plate 1, wide soft copper strip 3, and large pressure plate 4 together for conductivity. The current pin 12 has two sets of nuts; one set is used to squeeze the large base plate 1, wide soft copper strip 3, and large pressure plate 4 together with the bolts, while the other set of bolts is used to squeeze external wires. The current pin 12 is used to connect the current terminal, and the voltage pin 10 is used to connect the voltage terminal. The current pin 12 is larger than the voltage pin 10 to distinguish between the current terminal and the voltage terminal, preventing wiring errors.
[0033] exist Figures 1-4 In the middle, a sliding plate 13 slides through the small substrate 5, and the sliding plate 13 is connected to the upper surface of the large substrate 1 by screws.
[0034] The pressure plate for measuring current, voltage drop, and resistance, with the small substrate 5 sliding on the slide plate 13, allows for adjustment of the distance between the narrow soft copper strip 7 and the wide soft copper strip 3, accommodating workpieces with different spacing between current and voltage terminals.
[0035] exist Figure 3 In the middle, a limiting groove 14 is formed in the sliding plate 13, and a limiting rod 15 is slidably connected in the limiting groove 14. The limiting rod 15 is connected to the inner wall of the small base plate 5 by screws.
[0036] When the small substrate 5 slides along the slide plate 13, the limiting rod 15 on the inner wall of the small substrate 5 slides in the limiting groove 14 to prevent the small substrate 5 from sliding off the slide plate 13.
[0037] exist Figure 2 and Figure 3 In the middle, the back of the slide plate 13 abuts against the handle bolt 16, which is threaded to the rear of the inner wall of the small base plate 5.
[0038] The pressure plate for measuring current, voltage drop, and resistance is adjusted by sliding the small substrate 5 to adjust the distance between the small substrate 5 and the large substrate 1, and then the handle bolt 16 is tightened to press it onto the slide plate 13 to fix the position of the small substrate 5.
[0039] In summary: When using this pressure plate for measuring current, voltage drop, and resistance, first, take two sets of the device, loosen the handle bolt 16, and check the position of the current and voltage terminals of the workpiece as needed. Loosen the handle bolt 16 and slide the small base plate 5 so that the wide soft copper strip 3 can abut against the current terminal and the narrow soft copper strip 7 can abut against the voltage terminal. Then tighten the handle bolt 16 and connect the positive and negative terminals of the current terminal of the tester to the current pins 12 of the two sets of devices, and the positive and negative terminals of the voltage terminal to the voltage pins 10 of the two sets of devices, respectively. If the current and voltage of the workpiece to be measured are small, after wearing insulating gloves, press the wide soft copper strip 3 onto the current terminal of the workpiece and the narrow soft copper strip 7 onto the voltage terminal of the workpiece. If the current and voltage of the workpiece to be measured are large, install the large base plate 1 on a pressing device such as a cylinder, and use the pressing device to press the wide soft copper strip 3 onto the current terminal of the workpiece and the narrow soft copper strip 7 onto the voltage terminal of the workpiece. The tester automatically detects the current and voltage of the workpiece and calculates the resistance. The contents not described in detail in this description belong to the prior art known to those skilled in the art.
[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A pressure plate for measuring current, pressure drop, and resistance, comprising: The large substrate (1), the large pad (2), the wide soft copper strip (3), and the large pressure plate (4) are characterized in that; A large pad (2) is fixedly connected to the front of the large substrate (1). A wide soft copper strip (3) abuts against the outer side of the large pad (2). The wide soft copper strip (3) abuts against the large substrate (1), and a large pressure plate (4) abuts against the front of the wide soft copper strip (3). A small substrate (5) abuts against the upper surface of the large substrate (1). A small pad (6) is fixedly connected to the front of the small substrate (5). The small pad (6) abuts against the top of the large pad (2).
2. The pressure plate of claim 1, wherein: The front of the small pad (6) abuts against a narrow soft copper strip (7), which abuts against the front of the small substrate (5).
3. The pressure plate of claim 2, wherein: The front part of the narrow soft copper strip (7) abuts against a small pressure plate (8).
4. The pressure plate of claim 3, wherein: A fixing bolt a (9) is connected through the small substrate (5), the narrow soft copper strip (7) and the small pressure plate (8), and a voltage bolt (10) is connected through the small substrate (5), the narrow soft copper strip (7) and the small pressure plate (8) near the fixing bolt a (9).
5. The pressure plate of claim 1, wherein: A fixing bolt b (11) is connected through the large substrate (1), the wide soft copper strip (3) and the large pressure plate (4), and a current bolt (12) is connected through the large substrate (1), the wide soft copper strip (3) and the large pressure plate (4) near the fixing bolt b (11).
6. The pressure plate of claim 1, wherein: A sliding plate (13) slides through the small substrate (5), and the sliding plate (13) is connected to the upper surface of the large substrate (1) by screws.
7. The pressure plate of claim 6, wherein: A limiting groove (14) is provided in the sliding plate (13), and a limiting rod (15) is slidably connected in the limiting groove (14). The limiting rod (15) is connected to the inner wall of the small base plate (5) by screws.
8. The pressure plate of claim 6, wherein: The back of the slide plate (13) is abutted against a handle bolt (16), which is threaded onto the rear of the inner wall of the small base plate (5).