Circuit detector of power supply

Abstract

The utility model discloses a circuit detector for a power supply, which comprises a universal meter body, a rectangular groove is arranged on the front surface of the universal meter body, a display screen is embedded in the inner wall of the rectangular groove, a mounting groove communicated with the rectangular groove is arranged on one side surface of the universal meter body in a penetrating manner, and a transparent plastic plate is detachably arranged in the rectangular groove. By arranging a rectangular groove, a mounting groove, a mounting hole, a short shaft and a limiting plate, when the surface of the transparent plastic plate is seriously scratched and abraded or cracks occur, the limiting plate can be rotated to relieve the limiting effect on one end of the transparent plastic plate, and then the transparent plastic plate can be poked towards one end of the mounting groove; compared with the installation mode of the transparent plastic plate in the traditional universal meter, the transparent plastic plate can be replaced more conveniently and quickly, and the time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit detectors, in particular to a circuit detector for a power supply. Background Art

[0002] In a linear power supply circuit, the DC voltage output by the rectifier filter circuit is a key detection point. When there is no voltage or abnormal voltage at the output end, a multimeter can be used to detect whether the DC voltage output by the rectifier filter circuit is normal. The normal voltage at this point is a key condition for the normal output voltage of the subsequent stage. Therefore, a circuit detector, that is, a multimeter, is required for power supply circuit detection. The front of a traditional digital multimeter is provided with a display screen for displaying readings, and at the same time, a transparent plastic plate is provided to protect the display screen. The transparent plastic plate is usually fixedly installed on the housing of the multimeter.

[0003] There are still some deficiencies in the use of traditional multimeters: The transparent plastic cover for protecting the multimeter display screen is prone to scratching and cracking. This is mainly because during daily use, the multimeter will inevitably come into contact with other tools or objects, resulting in the transparent plastic cover being collided or scratched, which is likely to cause certain interference to the readings. In addition, since the multimeter needs to be carried and moved frequently, its transparent plastic cover is also easily squeezed and impacted, resulting in cracking and damage, which will ultimately affect the use of the display screen. For this reason, a circuit detector for a power supply is proposed to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the defect that the transparent plastic cover for protecting the multimeter display screen in the prior art is prone to scratching and cracking, and to propose a circuit detector for a power supply.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A circuit detector for a power supply includes a multimeter body. A rectangular groove is opened on the front surface of the multimeter body, and a display screen is embedded and installed on the inner wall of the rectangular groove. An installation groove communicating with the rectangular groove is penetrated through one side surface of the multimeter body. A transparent plastic plate is detachably installed inside the rectangular groove. One end of the transparent plastic plate penetrates through the installation groove and extends outside the installation groove to be flush with one side surface of the multimeter body. Limiting mechanisms are respectively arranged at the top and bottom of the multimeter body near the installation groove, and one end of the limiting mechanism contacts the transparent plastic plate.

[0007] Preferably, a "C"-shaped sealing groove is opened on the inner wall of the rectangular groove, and a "C"-shaped convex block is fixedly installed on the outer wall of the transparent plastic plate. The transparent plastic plate is installed inside the rectangular groove and the convex block is located inside the sealing groove.

[0008] Preferably, the outer surfaces of the protrusions are provided with rubber sealing pads.

[0009] Preferably, the limiting mechanism includes a mounting hole, a short shaft and a limiting plate. A side surface of the multimeter body is provided with mounting holes near the top and bottom of the mounting groove, and short shafts are transitionally fitted inside the two mounting holes. One end of the two short shafts is fixedly connected to the limiting plate, and one side surface of the limiting plate touches one side surface of the transparent plastic plate.

[0010] Preferably, fixed blocks are respectively fixedly installed at both ends of the top of the front side of the multimeter body, and protective plates are rotatably installed on the side surfaces corresponding to the two fixed blocks.

[0011] Preferably, a silicone pad is provided on one side of the protective plate, and a handle is provided on the silicone pad.

[0012] The utility model has the following beneficial effects:

[0013] 1. By setting the rectangular groove, the mounting groove, the mounting hole, the short shaft and the limit plate, when the surface of the transparent plastic plate is severely scratched, worn or cracked, the limit plate can be rotated to release the limit effect of the limit plate on one end of the transparent plastic plate, and then the transparent plastic plate can be pushed toward one end of the mounting groove, so that the transparent plastic plate can be quickly removed from the rectangular groove for replacement. Compared with the traditional installation method of the transparent plastic plate in the multimeter, the device is more convenient and quick when replacing the transparent plastic plate, saving time.

[0014] 2. By setting up the coordinated use of the fixed block and the protective plate, during the transportation and carrying process of the device, the protective plate can be rotated so that the protective plate can shield the transparent plastic plate, thereby further reducing the accidental scratches and wear on the surface of the transparent plastic plate during transportation and carrying, and extending the service life of the transparent plastic plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure proposed by the utility model;

[0016] Figure 2 It is a schematic diagram of the assembly structure proposed by the utility model;

[0017] Figure 3 The utility model proposed Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0018] Figure 4 This is a schematic diagram of the internal structure of the rectangular groove proposed by the utility model;

[0019] Figure 5 The utility model proposed Figure 4 Schematic diagram of the structure at point B in the middle.

[0020] In the figure: 1. Multimeter body; 2. Rectangular groove; 3. Display screen; 4. Transparent plastic plate; 401. Protrusion; 5. Sealing groove; 6. Installation groove; 7. Installation hole; 8. Short shaft; 9. Limiting plate; 10. Fixed block; 11. Protective plate. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] Refer to Figure 1-5 , A circuit detector for a power supply, including a multimeter body 1. Fixing blocks 10 are respectively fixedly installed at both ends of the top of the front surface of the multimeter body 1, and a protective plate 11 is rotatably installed on the common side surface of the two fixing blocks 10. Further, short rods are respectively transitionally fitted on the side surfaces of the two fixing blocks 10 corresponding to each other, and the two short rods are fixedly connected to the protective plate 11 together. A silica gel pad is provided on one side surface of the protective plate 11, and a handle is provided on the silica gel pad. A rectangular groove 2 is opened on the front surface of the multimeter body 1, and a display screen 3 is embedded in the inner wall of the rectangular groove 2. An installation groove 6 communicating with the rectangular groove 2 is penetrated through one side surface of the multimeter body 1. A transparent plastic plate 4 is detachably installed inside the rectangular groove 2. A "C"-shaped sealing groove 5 is opened on the inner wall of the rectangular groove 2. A "C"-shaped protrusion 401 is fixedly installed on the outer wall of the transparent plastic plate 4. The transparent plastic plate 4 is installed inside the rectangular groove 2 and the protrusion 401 is located inside the sealing groove 5. Rubber sealing pads are provided on the outer surfaces of the protrusions 401. One end of the transparent plastic plate 4 penetrates through the installation groove 6 and extends outside the installation groove 6 to be flush with one side surface of the multimeter body 1. Limiting mechanisms are respectively provided at the top and bottom of the side surface of the multimeter body 1 near the installation groove 6. One end of the limiting mechanism contacts the transparent plastic plate 4. The limiting mechanism includes an installation hole 7, a short shaft 8, and a limiting plate 9. Installation holes 7 are respectively opened at the top and bottom of the side surface of the multimeter body 1 near the installation groove 6, and short shafts 8 are respectively transitionally fitted inside the two installation holes 7. One ends of the two short shafts 8 are respectively fixedly connected to the limiting plates 9. One side surface of the limiting plate 9 contacts one side surface of the transparent plastic plate 4.

[0023] Further, when using this device to detect the circuit of the power supply, first connect the meter pen to the multimeter body 1, and then lap the contact of the meter pen on the circuit to be measured. This is the prior art and will not be elaborated here.

[0024] The usage method and advantages of the present invention: When using this circuit detector for the power supply, the working process is as follows:

[0025] Such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, when using the present device, if the surface of the transparent plastic plate 4 is severely scratched, worn or cracked during use, the limit plate 9 can be rotated so that the limit plate 9 drives the short shaft 8 to rotate, thereby releasing the limiting effect on one end of the transparent plastic plate 4, and then the transparent plastic plate 4 can be pushed toward one end of the installation groove 6, so that the transparent plastic plate 4 can be quickly removed from the rectangular groove 2 for replacement. Compared with the traditional installation method of the transparent plastic plate 4 in the multimeter, the present device is more convenient and quick when replacing the transparent plastic plate 4, saving time.

[0026] During the process of transporting and carrying the device, the protective plate 11 can be rotated so that the protective plate 11 can shield the transparent plastic plate 4. Accidental collisions and scratches will act on the silicone pad of the protective plate 11, thereby further reducing the accidental scratches and wear on the surface of the transparent plastic plate 4 during transportation and carrying, and extending the service life of the transparent plastic plate 4.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A power circuit tester, comprising a multimeter body (1), characterized in that: A rectangular groove (2) is formed on the front surface of the multimeter body (1). A display screen (3) is embedded and installed on the inner wall of the rectangular groove (2). An installation groove (6) communicating with the rectangular groove (2) is formed through one side surface of the multimeter body (1). A transparent plastic plate (4) is detachably installed inside the rectangular groove (2). One end of the transparent plastic plate (4) passes through the installation groove (6) and extends outside the installation groove (6) to be flush with one side surface of the multimeter body (1). Limiting mechanisms are respectively arranged at the top and bottom of the multimeter body (1) near the installation groove (6), and one end of each limiting mechanism contacts the transparent plastic plate (4).

2. A power supply circuit detector according to claim 1, characterized in that: A "C"-shaped sealing groove (5) is formed on the inner wall of the rectangular groove (2). A "C"-shaped convex block (401) is fixedly installed on the outer wall of the transparent plastic plate (4). The transparent plastic plate (4) is installed inside the rectangular groove (2) and the convex block (401) is located inside the sealing groove (5).

3. A power supply circuit tester according to claim 2, characterized in that: Rubber sealing gaskets are arranged on the outer surfaces of the convex blocks (401).

4. A power supply circuit tester according to claim 1, characterized in that: The limiting mechanism includes installation holes (7), short shafts (8) and limiting plates (9). Installation holes (7) are respectively formed at the top and bottom of the multimeter body (1) near the installation groove (6). Short shafts (8) are respectively installed in the two installation holes (7) with interference fit. One end of each of the two short shafts (8) is fixedly connected with a limiting plate (9). One side surface of the limiting plate (9) contacts one side surface of the transparent plastic plate (4).

5. The circuit detector of a power supply according to claim 1, characterized in that: Fixing blocks (10) are respectively fixedly installed at both ends of the top of the front surface of the multimeter body (1). A protection plate (11) is rotatably installed on the corresponding side surfaces of the two fixing blocks (10).

6. A power supply circuit tester according to claim 5, characterized in that: A silica gel pad is arranged on one side surface of the protection plate (11), and a handle is arranged on the silica gel pad.

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