Moisture-proof electrical instrument

Abstract

The utility model relates to the field of electrical instruments, and discloses a moisture-proof electrical instrument, which comprises a machine body, a terminal plug is detachably mounted on the inner wall of the machine body through a shielding assembly, a connecting wire is fixedly connected to the surface of the terminal plug, and a test pen is fixedly connected to one end, far away from the terminal plug, of the connecting wire. A winding assembly is arranged on the surface of the connecting wire, the shielding plate is elastically connected to the side wall of the inner side of the machine body through a reset spring, and a guide rod is fixedly connected to the inner wall of the machine body. According to the utility model, when a terminal plug is inserted, under the action of the reset spring, the trapezoidal block and the baffle plate can not only facilitate the insertion of the plug, but also elastically press the plug after the plug is installed, thereby effectively preventing moist air from entering the interior of a machine body from a connection part, greatly improving the moistureproof performance of instruments and meters, and prolonging the service life of the instruments and meters. Circuit faults caused by moisture are reduced, and the reliability and stability of instruments and meters are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of electrical instruments, and in particular to a moisture-proof electrical instrument. Background Technology

[0002] In the fields of modern power systems and electronic engineering, electrical instruments play a vital role. They are used to measure, monitor, and control various electrical parameters, providing crucial data support for the stable operation of power systems, the safety and reliability of equipment, and the precise implementation of engineering projects.

[0003] However, in actual use, electrical instruments and meters often face complex and ever-changing environmental conditions. Among them, a humid environment is a common and extremely challenging factor. Humid air may penetrate into the instrument and meter, causing problems such as short circuits and component corrosion, which seriously affect the performance and lifespan of the instrument and meter.

[0004] Currently, existing electrical instruments and meters have some problems in terms of moisture-proof performance and functional design: On the one hand, traditional designs often lack effective moisture-proof measures for the connection points of terminal plugs, allowing moisture to easily enter from the connection between the plug and the body, causing damage to the internal circuitry. On the other hand, existing instruments and meters usually cannot flexibly adjust the length of the connecting wires, making it inconvenient to operate during the extension and rewinding of the connecting wires. This may affect work efficiency and safety due to the messy connecting wires. Therefore, a moisture-proof electrical instrument and meter is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a moisture-proof electrical instrument, which aims to improve the problem that moisture can easily enter from the connection between the plug and the body in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a moisture-proof electrical instrument, comprising a body, wherein a terminal plug is detachably installed on the inner wall of the body via a shielding component, a connecting wire is fixedly connected to the surface of the terminal plug, a test pen is fixedly connected to the end of the connecting wire away from the terminal plug, a winding component is provided on the surface of the connecting wire, and the shielding component includes a shielding plate.

[0007] A trapezoidal block is fixedly connected to the surface of the shielding plate, and the shielding plate is elastically connected to the inner side wall of the machine body by a return spring. A guide rod is fixedly connected to the inner wall of the machine body.

[0008] As a further description of the above technical solution:

[0009] The winding assembly includes a fixed disc, the inner sidewall of which is elastically connected to a winding disc via a spiral spring, and the inner wall at the top of the fixed disc is elastically connected to a wedge via a limiting spring.

[0010] As a further description of the above technical solution:

[0011] The trapezoidal block is slidably connected to the inner wall of the machine body, the baffle is slidably connected to the inner wall of the machine body, and the baffle passes through and is slidably connected to the surface of the guide rod.

[0012] As a further description of the above technical solution:

[0013] The outer wall of the terminal plug is provided with two sets of protrusions, and the outer wall of the trapezoidal block is in contact with the outer wall of the terminal plug protrusions.

[0014] As a further description of the above technical solution:

[0015] One end of the reset spring is fixedly connected to the outer wall of the baffle plate, and the other end of the reset spring is fixedly connected to the inner wall of the machine body.

[0016] As a further description of the above technical solution:

[0017] A mounting bracket is provided on the left outer wall of the machine body, and the outer wall of the test pen is in contact with the inner side wall of the mounting bracket.

[0018] As a further description of the above technical solution:

[0019] The connecting wire passes through and is fixedly connected to the inner side wall of the take-up reel. The connecting wire passes through and is slidably connected to the inner wall of the fixed plate. One end of the spiral spring is fixedly connected to the inner side wall of the fixed plate, and the other end of the spiral spring is fixedly connected to the inner side wall of the take-up reel.

[0020] As a further description of the above technical solution:

[0021] One end of the limiting spring is fixedly connected to the outer wall of the wedge, and the other end of the limiting spring is fixedly connected to the inner wall of the top of the fixed disk. The take-up reel is rotatably connected to the inner wall of the fixed disk. Multiple sets of slots are opened on the outer arc surface of the inner side of the take-up reel, and the wedge engages with the inner wall of the slot.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, when the terminal plug is inserted, the trapezoidal block and the baffle plate, under the action of the return spring, can not only facilitate the insertion of the plug, but also elastically press the plug after installation, effectively preventing humid air from entering the machine body from the connection part. This greatly improves the moisture-proof performance of the instrument, reduces circuit failures caused by moisture, and enhances the reliability and stability of the instrument.

[0024] 2. In this utility model, when it is necessary to extend the connecting line, the test pen can be pulled directly to rotate the winding reel and release the connecting line. The wedge block and the limiting spring can fix the position of the winding reel. When it is necessary to wind up the connecting line, the wedge block can be pulled outward to achieve rapid winding through the spiral spring. This design facilitates the use of instruments in different scenarios, improves work efficiency, avoids the mess of connecting lines, and enhances the practicality of instruments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a moisture-proof electrical instrument proposed in this utility model.

[0026] Figure 2 This is a partial cross-sectional view of the bottom of the body of a moisture-proof electrical instrument proposed in this utility model.

[0027] Figure 3 This utility model proposes a moisture-proof electrical instrument. Figure 2 Enlarged structural diagram of section A;

[0028] Figure 4 This is a partial cross-sectional view of the fixing plate of a moisture-proof electrical instrument proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of a moisture-proof electrical instrument with its fixed disc and winding disc separated.

[0030] Legend:

[0031] 1. Body; 2. Shielding assembly; 21. Shielding plate; 22. Return spring; 23. Trapezoidal block; 24. Guide rod; 3. Terminal plug; 4. Rewinding assembly; 41. Fixing disc; 42. Spiral spring; 43. Rewinding disc; 44. Limit spring; 45. Wedge block; 5. Test pen; 6. Connecting wire. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a moisture-proof electrical instrument, comprising a body 1. The surface of the body 1 is provided with a display panel and a gear switch, so that the test pen 5 can be made in contact with the electrical equipment by opening the gear switch, thereby transmitting an electrical signal to the display panel. The inner wall of the body 1 is detachably mounted with a terminal plug 3 through a shielding component 2. The terminal plug 3 is prior art, and the plug of the multimeter test pen is prior art. A connecting wire 6 is fixedly connected to the surface of the terminal plug 3. The end of the connecting wire 6 away from the terminal plug 3 is fixedly connected to the test pen 5. A mounting bracket is provided on the left outer wall of the body 1. The outer wall of the test pen 5 is in contact with the inner side wall of the mounting bracket. The contact between the two allows the test pen 5 to be placed.

[0034] Reference Figure 2 and Figure 3 The surface of the connecting wire 6 is provided with a winding assembly 4. The shielding assembly 2 includes a shielding plate 21 and a trapezoidal block 23 slidably connected to the inner wall of the body 1. The shielding plate 21 is slidably connected to the inner wall of the body 1. Through the cooperation between the two sets of shielding plates 21, the mounting hole of the terminal plug 3 can be shielded and closed, thereby preventing rainwater from entering the interior of the body 1 through the mounting hole when used outdoors, thus preventing damage to the internal components. The shielding plate 21 passes through and is slidably connected to the surface of the guide rod 24. The trapezoidal block 23 is fixedly connected to the surface of the shielding plate 21. Through the fixed connection between the trapezoidal block 23 and the shielding plate 21, when the inclined surface of the trapezoidal block 23 is contacted by the outer protrusion of the terminal plug 3, the two sets of trapezoidal blocks 23 will cause the shielding plate 21 to move away from each other, thereby facilitating the overall insertion and installation of the terminal plug 3.

[0035] Reference Figure 3The outer wall of the terminal plug 3 is provided with two sets of protrusions. The outer wall of the trapezoidal block 23 contacts the outer wall of the protrusion of the terminal plug 3. The contact between the two causes the protrusion of the outer wall of the terminal plug 3 to move at the inclined surface of the trapezoidal block 23 when the terminal plug 3 is inserted. This pushes the two sets of trapezoidal blocks 23 to move the baffles 21 away from each other synchronously until the terminal plug 3 is fully installed inside the body 1. The two sets of baffles 21 will be automatically reset by the elastic action of the return spring 22, so that the plane at the end of the inclined surface of the trapezoidal block 23 contacts the outer wall of the protrusion of the terminal plug 3, thereby applying elastic pressure to the installation position of the terminal plug 3. The baffles 21 are elastically connected to the inner side wall of the body 1 through the return spring 22. One end of the return spring 22 is fixedly connected to the outer wall of the baffle 21, and the other end of the return spring 22 is fixedly connected to the inner wall of the body 1. The function of the return spring 22 is to automatically reset the position of the baffles 21 after it has moved. The inner wall of the body 1 is fixedly connected to the guide rod 24.

[0036] Reference Figure 4 - Figure 5 The winding assembly 4 includes a fixed disk 41, with a connecting wire 6 passing through and fixedly connected to the inner sidewall of the winding disk 43. When the winding disk 43 rotates, it synchronously drives the connecting wire 6 to wind around or stretch and unfold on its surface. The connecting wire 6 passes through and is slidably connected to the inner wall of the fixed disk 41. Guide grooves that fit the connecting wire 6 are provided on both sides of the fixed disk 41, so that the connecting wire 6 can only extend on the inner wall of the fixed disk 41. One end of the spiral spring 42 is fixedly connected to the inner sidewall of the fixed disk 41, and the other end of the spiral spring 42 is fixedly connected to the inner sidewall of the winding disk 43. The function of the spiral spring 42 is to rotate the winding disk 43 and automatically wind the connecting wire 6 after it has unfolded, thereby facilitating the overall winding. The inner sidewall of the fixed disk 41 is elastically connected to the winding disk 43 through the spiral spring 42. The inner wall at the top of the fixed disk 41 is connected to the winding disk 43 through... A limiting spring 44 is elastically connected to a wedge 45. One end of the limiting spring 44 is fixedly connected to the outer wall of the wedge 45, and the other end is fixedly connected to the inner wall of the top of the fixed disk 41. The function of the limiting spring 44 is to allow the wedge 45 to move on the inner wall of the fixed disk 41 when the winding reel 43 rotates and presses the inclined surface of the wedge 45. When the wedge 45 reaches the next set of slots, it will automatically reset due to the elasticity of the limiting spring 44. The winding reel 43 is rotatably connected to the inner wall of the fixed disk 41. Multiple sets of slots are opened on the outer arc surface of the inner side of the winding reel 43. The wedge 45 engages with the inner wall of the slot. The engagement between the two allows the winding reel 43 to rotate in one direction only to unwind the connecting wire 6. When the engagement between the two is released, the winding reel 43 will be elastically engaged by the spiral spring 42, which will allow the connecting wire 6 to be wound up quickly.

[0037] Working principle: When the terminal plug 3 is inserted, the protrusion on its outer wall will move at the inclined surface of the trapezoidal block 23, pushing the two sets of trapezoidal blocks 23 to move the baffles 21 away from each other, so as to facilitate the overall insertion and installation of the terminal plug 3. When the terminal plug 3 is fully installed inside the body 1, the two sets of baffles 21 will be automatically reset by the elastic action of the return spring 22. At this time, the plane at the end of the inclined surface of the trapezoidal block 23 contacts the outer wall of the protrusion of the terminal plug 3, and applies elastic pressure to the installation position of the terminal plug 3. One end of the return spring 22 is fixedly connected to the outer wall of the baffle 21, and the other end is fixedly connected to the inner wall of the body 1. Its function is to automatically reset the position of the baffle 21 after it has moved.

[0038] When it is necessary to extend the connecting cable 6, the test pen 5 can be pulled to make the connecting cable 6 rotate inside the fixed plate 41, thereby driving the take-up reel 43 to rotate. When the take-up reel 43 rotates and presses the inclined surface of the wedge block 45, the wedge block 45 will move on the inner wall of the fixed plate 41 until it reaches the next set of slots of the take-up reel 43. At this time, the wedge block 45 will be automatically reset by the elastic action of the limit spring 44, thereby engaging the slot of the take-up reel 43 at the current position. At the same time, when the take-up reel 43 rotates, the spiral spring 42 will also be elastically compressed. When it is necessary to quickly rewind the connecting cable 6, pull the wedge block 45 outward to disengage it from the slot of the take-up reel 43 at the current position, so that the take-up reel 43 will drive the connecting cable 6 to rotate quickly, thereby quickly rewinding the connecting cable 6.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A moisture-proof electrical instrument, comprising a body (1), characterized in that: The inner wall of the machine body (1) is detachably provided with a terminal plug (3) through a shielding assembly (2), the surface of the terminal plug (3) is fixedly connected with a connecting line (6), one end of the connecting line (6) away from the terminal plug (3) is fixedly connected with a test pen (5), and the surface of the connecting line (6) is provided with a winding assembly (4). The surface of the shielding plate (21) is fixedly connected with a trapezoidal block (23), and the shielding plate (21) is elastically connected to the inner side wall of the machine body (1) through a reset spring (22).

2. A moisture-proof electrical instrument according to claim 1, characterized in that: The inner side wall of the fixed disc (41) is elastically connected with a winding disc (43) through a spiral spring (42), and the inner wall of the top end of the fixed disc (41) is elastically connected with a wedge block (45) through a limiting spring (44).

3. The moisture-proof electrical instrument according to claim 1, characterized in that: The trapezoidal block (23) is slidingly connected to the inner wall of the machine body (1), the shielding plate (21) is slidingly connected to the inner wall of the machine body (1), and the shielding plate (21) penetrates and slidingly connects to the surface of the guide rod (24).

4. The moisture-proof electrical instrument according to claim 1, characterized in that: The outer wall of the terminal plug (3) is provided with two groups of protrusions, and the outer wall of the trapezoidal block (23) is in contact with the outer wall of the terminal plug (3) protrusions.

5. The moisture-proof electrical instrument according to claim 1, wherein: One end of the reset spring (22) is fixedly connected to the outer wall of the shielding plate (21), and the other end of the reset spring (22) is fixedly connected to the inner wall of the machine body (1).

6. The moisture-proof electrical instrument according to claim 1, wherein: The left outer wall of the machine body (1) is provided with a mounting bracket, and the outer wall of the test pen (5) is in contact with the inner side wall of the mounting bracket.

7. The moisture-proof electrical instrument according to claim 2, wherein: The connecting line (6) penetrates and is fixedly connected to the inner side wall of the winding disc (43), the connecting line (6) penetrates and slidingly connects to the inner wall of the fixed disc (41), one end of the spiral spring (42) is fixedly connected to the inner side wall of the fixed disc (41), and the other end of the spiral spring (42) is fixedly connected to the inner side wall of the winding disc (43).

8. The moisture-proof electrical instrument according to claim 2, wherein: One end of the limiting spring (44) is fixedly connected to the outer wall of the wedge block (45), the other end of the limiting spring (44) is fixedly connected to the inner wall of the top end of the fixed disc (41), the winding disc (43) is rotationally connected to the inner wall of the fixed disc (41), a plurality of clamping grooves are formed in the inner side outer arc surface of the winding disc (43), and the wedge block (45) is clamped with the inner wall of the clamping groove.

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