Conductive clamp for measuring loop resistance
By designing a conductive clip with a clamping device, the existing conductive clips have poor stability and confusing wire arrangements have been solved, and higher stability and operational convenience are achieved, which is suitable for high-current testing.
Patent Information
- Application Number
- CN202421776365.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The existing conductive clips are fixed by spring hinges, which have poor stability and are difficult to meet the needs of high current testing. The confusing wire arrangement affects the testing and clamping effects.
A conductive clip including a first clamp, a second clamp and a hinge is designed, and clamping and loosening is achieved by clamping means (including threaded holes, push rods and top press heads), and an anti-slip texture is provided on the clamp to prevent slippage.
It improves the stability and operation convenience of the conductive clip, can adapt to the test needs of large currents, and prevents the clamp from slipping through the limit design, ensuring operation stability and safety.
Smart Images
Figure CN223022182U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit breaker conductive clips, in particular to a conductive clip for loop resistance measurement. Background Technique
[0002] In the power system, measuring the loop resistance of electrical equipment such as generator circuit breakers is an important test item. When measuring the loop resistance, a loop resistance measuring instrument is required to send a large excitation current to the device under test to accurately measure the loop resistance. This requires that the wiring terminals at both ends of the DC generator and the generator circuit breaker have a high current-carrying capacity.
[0003] At present, the commonly used wiring terminals are mainly connected to the DC generator by a conductive clip structure with a spring hinge. However, this structure relies on the elastic force of the spring for clamping, with poor stability and difficult to meet the requirements of large-current tests. With the development of the power system, the capacity and performance of electrical equipment are constantly improving, and the demand for loop resistance measurement is also increasing; the chaotic arrangement of wires is also likely to affect the test and clamping effects. Therefore, it is necessary to seek a new type of conductive clip structure to improve the stability of loop resistance measurement. Content of the Utility Model
[0004] The utility model provides a conductive clip for loop resistance measurement, aiming to solve the problems that the existing conductive clip is simply fixed by a spring hinge and is not suitable for the requirements of large-current tests, and the chaotic arrangement of wires affects the test and clamping effects.
[0005] To solve the above technical problems, the technical solution adopted by the utility model is:
[0006] A conductive clip for loop resistance measurement includes a first clamping plate, a second clamping plate and a hinge. The first clamping plate and the second clamping plate cooperate through the hinge to form a clip structure. A threaded hole is provided on the handle part of the first clamping plate, and a clamping device is detachably and limitably installed in the threaded hole. One end of the clamping device passes through the first clamping plate and forms a limit fit with the second clamping plate;
[0007] A wire connection hole is provided on the handle part of the second clamping plate, and a wire groove is provided on the side of the handle part of the second clamping plate away from the clamping device. One end of the wire groove is communicated with the wire connection hole, and the other end of the wire groove penetrates out from the end of the handle part of the second clamping plate.
[0008] Preferably, the clamping device includes a push rod. The push rod is coaxially embedded in the threaded hole, and an external thread is provided on the side wall of the push rod and forms a threaded fit with the threaded hole. The bottom of the push rod forms a limit fit with the second clamping plate, and a clamping handle is provided at the top of the push rod.
[0009] More preferably, a pressing head is provided at the bottom of the push rod, and a groove is provided in the handle portion of the second clamping plate. The pressing head is movably embedded in the groove, and the pressing head and the groove form a limiting fit.
[0010] Further, the pressing head is hemispherical, and the groove is hemispherical.
[0011] Preferably, the first clamping plate is symmetrical with the second clamping plate about the hinge.
[0012] Even more preferably, the heads of the first clamping plate and the second clamping plate are made of conductive materials, and anti-slip patterns are provided on the sides of the heads of the first clamping plate and the second clamping plate that are in contact with the wiring terminals.
[0013] Further, insulating layers are provided on the handle portions of the first clamping plate and the second clamping plate. Anti-slip patterns are provided on the insulating layers, and the insulating layers do not cover the wire connection holes.
[0014] Advantages of the present utility model:
[0015] 1. Strong stability: By rotating the clamping device, the head spacing of the clip structure can be adjusted, thereby ensuring the clamping strength and stability. The clamping device is provided on the clamping plate. Due to the threaded connection and hemispherical groove design, the friction is small and it can effectively prevent the clamping plate from slipping during the clamping process, ensuring the stability and safety of the operation process;
[0016] 2. Convenient operation: The clamping and loosening operations can be achieved by rotating the clamping handle, and the operation is simple, reducing the working intensity of the operator;
[0017] 3. Simple structure: The device adopts two clamping plates symmetrically arranged up and down and is rotationally connected by a hinge, making the structure simpler and more compact, and easy to operate and maintain. Description of the drawings
[0018] Figure 1 is a sectional view of the conductive clip provided by the present utility model;
[0019] Figure 2 is a three-dimensional view of the conductive clip provided by the present utility model Figure 1 ;
[0020] Figure 3 is a three-dimensional view of the conductive clip provided by the present utility model Figure 2 ;
[0021] In the figure: 1. First clamping plate; 2. Second clamping plate; 3. Hinge;
[0022] 4. Clamping device; 41. Clamping handle; 42. Push rod; 43. Pressing head; 44. External thread;
[0023] 5. Wire connection hole; 6. Wire groove; 7. Groove; 8. Threaded hole. DETAILED DESCRIPTION
[0024] As follows, embodiments are further described with reference to the accompanying drawings.
[0025] like Figures 1 to 3 As shown, as a preferred embodiment 1, a conductive clamp for measuring loop resistance includes a first clamping plate 1, a second clamping plate 2 and a hinge 3, wherein the first clamping plate 1 cooperates with the second clamping plate 2 through the hinge 3 to form a clamp structure, a threaded hole 8 is provided on the handle of the first clamping plate 1, a clamping device 4 is detachably installed in the threaded hole 8, and one end of the clamping device 4 passes through the first clamping plate 1 and then forms a limited fit with the second clamping plate 2;
[0026] A wire connection hole 5 is provided on the handle of the second clamping plate 2, and a wire groove 6 is provided on the side of the handle of the second clamping plate 2 away from the clamping device 4. One end of the wire groove 6 is connected to the wire connection hole 5, and the other end of the wire groove 6 passes through the end of the handle of the second clamping plate 2. The wire connection hole 5 is a through hole, which is used to connect the wire to the second clamping plate 2, and the wire is used to connect the power supply and the conductive clamp.
[0027] Embodiment 1 provides a conductive clamp for measuring loop resistance. When in use, the circuit breaker terminal is inserted into the gap formed by the heads of the first clamping plate 1 and the second clamping plate 2, the position of the clamping device 4 is adjusted, and the clamping handle 41 is rotated so that the pressing head 43 on the clamping device 4 is pushed into the groove 7 on the second clamping plate 2, so that the handles of the first clamping plate 1 and the second clamping plate 2 are spread apart, and the heads of the first clamping plate 1 and the second clamping plate 2 are tightened to obtain better electrical contact. Since the clamping device 4 and the first clamping plate 1 are threadedly connected, the clamping device 4 can keep the heads of the first clamping plate 1 and the second clamping plate 2 in a tightened state at all times, has good stability, and can pass a large current. The wire connection hole 5 and the wire groove 6 facilitate the installation and arrangement of the wires, and are easy to use.
[0028] As a preferred embodiment 2, the clamping device 4 includes a push rod 42, which is coaxially embedded in the threaded hole 8, and an external thread 44 is provided on the side wall of the push rod 42 to form a threaded fit with the threaded hole 8, the bottom of the push rod 42 forms a limiting fit with the second clamping plate 2, and a clamping handle 41 is provided on the top of the push rod 42.
[0029] The clamping handle 41 cooperates with the push rod 42 to form a T-shaped structure.
[0030] As a preferred embodiment 3, a pressing head 43 is provided at the bottom of the push rod 42, and a groove 7 is provided at the handle of the second clamping plate 2. The pressing head 43 can be movably embedded in the groove 7, and the pressing head 43 and the groove 7 form a limiting fit.
[0031] As a preferred Embodiment 4, the pressing head 43 is hemispherical, and the groove 7 is hemispherical.
[0032] In the working state, the push rod 42 is threadedly connected to the threaded hole 8; the clamping handle 41 is used to rotate and adjust the relative position of the clamping device and the first clamping plate 1; a pressing head 43 is fixedly connected to the lower end of the push rod 42, and the lower end of the pressing head 43 is hemispherical and can be inserted into the hemispherical groove 7 on the second clamping plate 2.
[0033] As a preferred Embodiment 5, the external thread 44 is a saturated thread structure.
[0034] As a preferred Embodiment 6, the first clamping plate 1 is symmetric with respect to the hinge 3 and the second clamping plate 2. It is convenient to use and ensures clamping stability.
[0035] As a preferred Embodiment 7, the first clamping plate 1 includes a head horizontal plate, a connecting inclined plate and a handle horizontal plate which are integrally formed, the second clamping plate 2 includes a head horizontal plate, a connecting inclined plate and a handle horizontal plate which are integrally formed, the connecting inclined plates of the first clamping plate 1 and the second clamping plate 2 form a hinge fit through the hinge 3, while the head horizontal plates form the head of the clip, and the handle horizontal plates form the handle of the clip, and the distance between the heads is less than the distance between the handles.
[0036] As a preferred Embodiment 8, the heads of the first clamping plate 1 and the second clamping plate 2 are both made of conductive materials, and anti-slip patterns are provided on the sides of the heads of the first clamping plate 1 and the second clamping plate 2 that are in contact with the wiring terminals.
[0037] As a preferred Embodiment 9, insulating layers are provided on the handles of the first clamping plate 1 and the second clamping plate 2, anti-slip patterns are provided on the insulating layers, and the insulating layers do not cover the wire connection holes 5.
[0038] As a preferred Embodiment 10, the anti-slip pattern can be any one of a wavy shape or a serrated shape.
[0039] As a preferred Embodiment 11, the hinge 3 can be a spring hinge, which further improves stability, and the clamping stability is ensured by the combined action of the spring hinge and the clamping device.
[0040] As a preferred Embodiment 12, the wire groove 6 is arranged in a straight line, and the wire groove 6 is parallel to the handle of the second clamping plate 2.
[0041] The working principle of the present utility model:
[0042] The utility model provides a conductive clamp for loop resistance measurement. During use, the wiring terminal of the circuit breaker is inserted into the gap formed by the heads of the first clamping plate 1 and the second clamping plate 2. After adjusting the position of the clamping device 4, the pressing head 43 on the clamping device 4 is pushed into the groove 7 on the second clamping plate 2 by rotating the clamping handle 41, so that the handles of the first clamping plate 1 and the second clamping plate 2 are expanded, and the heads of the first clamping plate 1 and the second clamping plate 2 are tightened to obtain better electrical contact. Since the clamping device 4 is threadedly connected to the first clamping plate 1, the clamping device 4 can keep the heads of the first clamping plate 1 and the second clamping plate 2 in a tightened state all the time, with good stability and the ability to pass a large current. The wire installation and arrangement are convenient through the wire connection hole 5 and the wire groove 6, which is convenient for use.
Claims
1. A conductive clamp for measuring loop resistance, comprising a first clamping plate (1), a second clamping plate (2) and a hinge (3), wherein the first clamping plate (1) cooperates with the second clamping plate (2) via the hinge (3) to form a clamp structure, characterized in that: A threaded hole (8) is provided on the handle of the first clamping plate (1), a clamping device (4) is detachably mounted in the threaded hole (8) in a limited position, one end of the clamping device (4) passing through the first clamping plate (1) to form a limited position fit with the second clamping plate (2); A wire connection hole (5) is provided on the handle of the second clamping plate (2), and a wire groove (6) is provided on the side of the handle of the second clamping plate (2) away from the clamping device (4), one end of the wire groove (6) is connected to the wire connection hole (5), and the other end of the wire groove (6) passes through the end of the handle of the second clamping plate (2).
2. A conductive clip for measuring loop resistance according to claim 1, characterized in that: The clamping device (4) comprises a push rod (42) which is coaxially and concentrically embedded in the threaded hole (8), and a side wall of the push rod (42) is provided with an external thread (44) which is threadedly matched with the threaded hole (8), the bottom of the push rod (42) is limitedly matched with the second clamping plate (2), and the top of the push rod (42) is provided with a clamping handle (41).
3. A conductive clip for measuring loop resistance according to claim 2, characterized in that: A pressing head (43) is provided at the bottom of the push rod (42), a groove (7) is provided at the handle of the second clamping plate (2), the pressing head (43) is movably embedded in the groove (7), and the pressing head (43) and the groove (7) form a limiting fit.
4. A conductive clip for measuring loop resistance according to claim 3, characterized in that: The pressing head (43) is hemispherical, and the groove (7) is hemispherical.
5. A conductive clip for measuring loop resistance according to any one of claims 1 to 4, characterized in that: The first clamping plate (1) is symmetrical to the second clamping plate (2) about the hinge (3).
6. A conductive clip for measuring loop resistance according to claim 5, characterized in that: The heads of the first clamping plate (1) and the second clamping plate (2) are both made of conductive material, and the heads of the first clamping plate (1) and the second clamping plate (2) are both provided with anti-slip patterns on the sides in contact with the connection terminals.
7. A conductive clip for measuring loop resistance according to claim 6, characterized in that: An insulating layer is provided on the handle of the first clamping plate (1) and the second clamping plate (2), the insulating layer is provided with anti-slip patterns, and the insulating layer does not cover the wire connection hole (5).