High-frequency ampere meter

Abstract

The utility model discloses a high-frequency ampere meter, which comprises a high-frequency ampere meter body, the high-frequency ampere meter body comprises an outer shell and a rear shell, the surface of the outer shell is provided with a scale indicating dial, a pointer return-to-zero screw is arranged below the scale indicating dial, and four corners of the outer shell are provided with mounting holes. The surface of the rear shell is provided with two binding posts connected with a wire, each binding post comprises a base, and the binding posts fasten the wire to be tested in the base; the high-frequency ampere meter can be quickly connected with the lead during use, the lead is not easy to loosen after being connected, the lead connecting part is hidden and is not easy to touch by foreign objects, the detection precision can be improved, and the high-frequency ampere meter is suitable for popularization and use.

Description

Technical Field

[0001] The utility model relates to the technical field of instruments and meters, in particular to a high-frequency ammeter. Background Art

[0002] In the detection of electronic circuit equipment, high-frequency ammeter is a commonly used detection instrument. Traditional ammeters are mainly used in teaching and electrical circuit detection, and the real value of the current in the circuit is obtained through detection.

[0003] The utility model patent with announcement number CN215449396U discloses an ammeter, including an ammeter body and an ammeter housing body, the ammeter body is fixedly installed and embedded in the interior of the ammeter housing body, the ammeter housing body includes a bottom plate, a shell and a top plate, the bottom plate is integrally connected and fixed to the shell, and the shell is hinged to one side of the top plate; an anti-fall layer is provided between the ammeter body and the shell, a shock-absorbing pad is provided between the ammeter body and the bottom plate, and a reading window is fixedly installed on the upper end of the top plate corresponding to the ammeter body; a terminal is fixedly provided on the ammeter body, and an inlet is provided on the top plate at a position corresponding to the terminal, and a zero adjustment button is also fixedly provided on the top plate, the zero adjustment button corresponds to the position of the zero adjustment button on the ammeter body, and is connected by a spring; the technical problem that the ammeter is easily damaged by bumps is solved.

[0004] However, in actual use, when the above-mentioned ammeter is connected to the wire, its connection method is relatively cumbersome, and the connection part is exposed, which is easily affected by foreign objects and affects the measurement accuracy, resulting in unsatisfactory use effect. Utility Model Content

[0005] The utility model aims to solve the above problems and provide a high-frequency ammeter which can quickly connect a wire and is not easy to loosen after the wire is connected. In addition, the wire connection part is concealed and not easily touched by foreign objects, thereby improving the detection accuracy.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: a high-frequency ammeter, including a high-frequency ammeter body, the high-frequency ammeter body including an outer shell and a rear shell, the surface of the outer shell is provided with a scale indicator disk, a pointer zeroing screw is provided below the scale indicator disk, mounting holes are provided at the four corners of the outer shell, and two terminals for connecting wires are provided on the surface of the rear shell, the terminals include a base, and the terminals fasten the wire to be measured in the base.

[0007] Preferably, the terminal also includes an insulating tube above the base, a slot hole is provided in the base, a conductor is provided on the bottom surface of the slot hole, the bottom of the conductor extends into the rear shell, a fastening rod is provided in the insulating tube, the fastening rod is fixed in the insulating tube and extends into the slot hole, and the fastening rod is located directly above the conductor.

[0008] Preferably, the circumference of the insulating cylinder is provided with an external thread 1, and the insulating cylinder is detachably connected to the base via the external thread 1. After the insulating cylinder is rotated, the fastening rod moves downward to press the wire onto the surface of the conductor.

[0009] Preferably, the circumference of the fastening rod is provided with a second external thread, the fastening rod is movably connected to the insulating tube via the second external thread, and the fastening rod can move downward via the second external thread.

[0010] Preferably, the bottom surface of the fastening rod and the surface of the conductor are both provided with corrugated serrations, and the fastening rod and the conductor clamp the conductor to be tested via the corrugated serrations.

[0011] Preferably, the fastening rod is an insulating rod.

[0012] Preferably, a wire buckle for stacking the wires to be tested is also provided below the terminal, and the wire buckle is in the shape of a 3 / 4 ring.

[0013] The utility model discloses a high-frequency ammeter, comprising a high-frequency ammeter body, the high-frequency ammeter body comprising an outer shell and a rear shell, a scale indicator disk is arranged on the surface of the outer shell, a pointer zeroing screw is arranged below the scale indicator disk, mounting holes are arranged at four corners of the outer shell, two terminals for connecting wires are arranged on the surface of the rear shell, the terminals comprise a base, and the terminals fasten the wires to be measured in the base; compared with the prior art, the high-frequency ammeter has the advantages of being able to quickly connect the wires when in use, and the wires are not easy to loosen after being connected, and the wire connection parts are concealed and not easy to be touched by foreign objects, so as to improve the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The overall structure of the high-frequency ammeter of the utility model is shown in FIG. Figure 1 .

[0015] Figure 2 The overall structure of the high-frequency ammeter of the utility model is shown in FIG. Figure 2 .

[0016] Figure 3 The overall structure of the high-frequency ammeter of the utility model is shown in FIG. Figure 3 .

[0017] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0018] Figure 5 For this utility model Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0019] Figure 6It is a schematic diagram of the internal structure of the terminal in the utility model.

[0020] In the figure: 1. high-frequency ammeter body; 2. outer shell; 21. scale indicator plate; 22. mounting hole; 23. pointer zeroing screw; 3. back shell; 31. conductor; 4. wire buckle; 5. terminal; 51. base; 511. slot; 52. insulating tube; 521. external thread 1; 53. fastening rod; 531. external thread 2. DETAILED DESCRIPTION

[0021] The utility model is now described in further detail in conjunction with the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0022] Please refer to Figure 1-6 A high-frequency ammeter comprises a high-frequency ammeter body 1, wherein the high-frequency ammeter body 1 comprises an outer shell 2 and a rear shell 3, wherein the surface of the outer shell 2 is provided with a scale indicator disk 21, and a pointer zeroing screw 23 is provided below the scale indicator disk 21. When the pointer is used for a long time, it will affect the detection accuracy. At this time, the pointer can be reset to zero by turning the pointer zeroing screw 23, which can improve the detection accuracy. The four corners of the outer shell 2 are provided with mounting holes 22, which are convenient for the overall installation and fixing. The rear shell 3 is provided with a coil, an iron core, an aluminum frame, and a spring. , pole shoes and other detection components, turn on the power and the pointer swings under the action of the magnetic field, so as to measure the current (this structure is the basic principle structure of the ammeter, belongs to the prior art, and will not be described in detail here). The surface of the rear shell 3 is provided with two terminals 5 for connecting the wires, and the terminals 5 include a base 51. The terminals 5 fasten the wire to be tested in the base 51; when used for detection, the end of the wire to be tested can be quickly connected to the terminal 5 (base 51), and the connection part is not exposed, which can avoid being touched by foreign objects, thereby improving the detection accuracy and facilitating use.

[0023] In this embodiment, the terminal 5 also includes an insulating tube 52 above the base 51, and the base 51 is provided with a through slot 511, and the bottom surface of the slot 511 is provided with a conductor 31, and the bottom of the conductor 31 extends into the rear shell 3, and the insulating tube 52 is provided with a fastening rod 53, and the fastening rod 53 is fixed in the insulating tube 52 and extends into the slot 511, and the fastening rod 53 is located directly above the conductor 31.

[0024] Furthermore, the circumference of the insulating cylinder 52 is provided with an external thread 521, and the insulating cylinder 52 is detachably connected to the base 51 through the external thread 521. After the insulating cylinder 52 is rotated, the fastening rod 53 moves downward to press the wire onto the surface of the conductor 31.

[0025] Under normal circumstances, the tightening rod 53 is not in contact with the conductor 31; when used for detection, the end of the wire to be tested is first placed on the surface of the conductor 31, and then the insulating cylinder 52 is twisted. Since the insulating cylinder 52 is rotatably connected to the base 51 and the tightening rod 53 is fixed in the insulating cylinder 52, the tightening rod 53 can move downward after the insulating cylinder 52 is twisted until the tightening rod 53 presses the wire to be tested onto the conductor 31; at this time, the wire to be tested is electrically connected to the conductor 31, and the current in the circuit where the wire is located can be detected.

[0026] Embodiment 2: The insulating tube 52 can also be fixed on the surface of the base 51 , and then the circumference of the fastening rod 53 is provided with a second external thread 531 , and the fastening rod 53 is movably connected to the insulating tube 52 through the second external thread 531 , so that the fastening rod 53 can move downward through the second external thread 531 .

[0027] That is to say, the base 51 and the insulating tube 52 form a whole, and the fastening rod 53 can move up and down in the insulating tube 52 through the external thread 531. When clamping the wire, it is only necessary to rotate the fastening rod 53, so that the wire can be clamped between the fastening rod 53 and the conductor 31; the operation is simple, and the wire electrical connection can be quickly achieved.

[0028] Based on the above embodiment, the bottom surface of the fastening rod 53 and the surface of the conductor 31 are both provided with corrugated serrations, and the fastening rod 53 and the conductor 31 clamp the wire to be tested through the corrugated serrations to prevent the wire end from loosening; in addition, the wire connection parts are all arranged in the groove hole 511, and the base 51 can play a protective role through the groove hole 511 to prevent external touch from affecting the detection accuracy.

[0029] Based on the above embodiment, the fastening rod 53 is an insulating rod, and after the wire is clamped between the fastening rod 53 and the conductor 31, the current can directly pass through the conductor 31 into the rear shell for detection.

[0030] As a preferred solution, a wire buckle 4 for stacking the wires to be tested is provided below the terminal 5. The wire buckle 4 is in a 3 / 4 ring shape. After the end of the wire is connected to the slot 511, the wire itself can be directly buckled into the wire buckle 4 to avoid line disorder and improve practicality.

[0031] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A high-frequency ammeter, comprising a high-frequency ammeter body, the high-frequency ammeter body comprising an outer shell and a rear shell, a scale indicator disk is provided on the surface of the outer shell, a pointer zeroing screw is provided below the scale indicator disk, and mounting holes are provided at the four corners of the outer shell, characterized in that: The surface of the rear shell is provided with two terminals for connecting the wires, and the terminals include a base, and the terminals fasten the wires to be tested in the base.

2. The high-frequency ammeter according to claim 1, characterized in that: The terminal also includes an insulating tube above the base, a slot hole is provided in the base, a conductor is provided on the bottom surface of the slot hole, the bottom of the conductor extends into the rear shell, a fastening rod is provided in the insulating tube, the fastening rod is fixed in the insulating tube and extends into the slot hole, and the fastening rod is located directly above the conductor.

3. The high-frequency ammeter according to claim 2, characterized in that: The circumference of the insulating cylinder is provided with an external thread 1, and the insulating cylinder is detachably connected to the base through the external thread 1. After the insulating cylinder is rotated, the fastening rod moves downward to press the wire onto the surface of the conductor.

4. The high-frequency ammeter according to claim 2, characterized in that: The circumference of the fastening rod is provided with a second external thread, the fastening rod is movably connected to the insulating tube through the second external thread, and the fastening rod can move downward through the second external thread.

5. The high-frequency ammeter according to claim 4, characterized in that: The bottom surface of the fastening rod and the surface of the conductor are both provided with corrugated serrations, and the fastening rod and the conductor clamp the conductor to be tested through the corrugated serrations.

6. The high-frequency ammeter according to any one of claims 2 to 4, characterized in that: The fastening rod is an insulating rod.

7. The high-frequency ammeter according to any one of claims 1 to 4, characterized in that: A wire buckle for stacking the wires to be tested is also provided below the terminal, and the wire buckle is in a 3 / 4 ring shape.

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