Terminal with overload protection device

Abstract

The utility model relates to the field of electric power fittings, and discloses a terminal with an overload protection device, which comprises a terminal body, the overload protection device is arranged in the terminal body, the front side of the exterior of the terminal body is detachably connected with a protective shell I, the rear side of the exterior of the terminal body is detachably connected with a protective shell II, and the protective shell II is detachably connected with the overload protection device. Fixing plates are fixedly connected to the left side and the right side of the first protective shell and the left side and the right side of the second protective shell, adjusting plates are rotatably connected to the interiors of the fixing plates, second adjusting grooves are formed in the interiors of the fixing plates, adjusting columns are fixedly connected to the tops of the adjusting plates, and adjusting assemblies are arranged outside the adjusting columns. According to the utility model, the whole installation process is simple and convenient to operate, complex tools and tedious steps are not needed, rapid installation is realized, the installation time and the labor cost are greatly saved, omnibearing protection is provided for the terminal body, and insulation and dust prevention effects can be achieved to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of power accessories, and in particular to a terminal with an overload protection device. Background Technology

[0002] A terminal is an electronic component used to achieve electrical connections. It is typically made of conductive material and has a specific shape and structure. It can be divided into various types, such as connection terminals and termination terminals. Terminals reliably connect wires, cables, or other electrical equipment, enabling the transmission of current or signals. They play a fundamental role in connection and transmission in circuit systems across many fields, including power and electronics. They are often used in conjunction with other electrical components to ensure stable circuit operation and functionality. To prevent current from exceeding the rated carrying capacity and causing various safety and equipment damage problems, overload protection devices, such as thermal overload relays and fuses, are usually installed on terminals. When an overload occurs, these devices utilize principles such as thermal and electromagnetic effects to promptly cut off the circuit or take current-limiting measures, preventing the terminal and its connected electrical equipment from burning out due to overheating or overcurrent. This prevents serious accidents such as electrical fires, thereby ensuring the safe and stable operation of the circuit system, extending equipment lifespan, and improving the reliability and safety of the entire system.

[0003] In existing technologies, some terminals need to be installed on a substrate before use, usually by soldering. While this method ensures a firm connection between the terminal and the substrate, it has significant drawbacks. If a terminal is damaged due to overcurrent, aging from long-term use, or other reasons, the irreversible nature of soldering makes it impossible to disassemble and replace the damaged terminal separately. Instead, the entire substrate and terminal must be discarded and replaced together, which not only wastes resources and increases maintenance costs but also greatly extends the downtime for equipment maintenance. Therefore, to address these issues, a terminal with an overload protection device is proposed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a terminal with an overload protection device, which aims to improve the existing technology where damaged terminals cannot be disassembled and replaced separately, and the entire substrate and terminals must be discarded and replaced together, which not only wastes resources but also increases maintenance costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A terminal with an overload protection device includes a terminal body, an overload protection device disposed inside the terminal body, a protective shell detachably connected to the front of the terminal body, a protective shell detachably connected to the rear of the terminal body, a fixing plate fixedly connected to the left and right sides of the protective shell 1 and the left and right sides of the protective shell 2, an adjusting plate rotatably connected inside the fixing plate, an adjusting groove 2 opened inside the fixing plate, an adjusting column fixedly connected to the top of the adjusting plate, an adjusting assembly disposed outside the adjusting column, and multiple mounting assemblies disposed outside the protective shell 1.

[0007] As a further description of the above technical solution:

[0008] The adjusting assembly includes a screw block, the screw block being internally threaded to the outside of the adjusting column, the adjusting plate having an adjusting groove inside, and the adjusting column having a spring sleeved on the outside.

[0009] As a further description of the above technical solution:

[0010] The fixed plate is externally slidably connected to the inner wall of the first adjusting groove, and the adjusting column is externally slidably connected to the inner wall of the second adjusting groove.

[0011] As a further description of the above technical solution:

[0012] One end of the spring is fixedly connected to the bottom of the fixed plate, and the other end of the spring is fixedly connected to the top of the adjusting plate.

[0013] As a further description of the above technical solution:

[0014] The mounting assembly includes a mounting plate, one outer side of which is fixedly connected to the outer rear side of the protective housing, and two springs are fixedly connected to the other side of the mounting plate, with a retaining plate fixedly connected to the other end of each spring.

[0015] As a further description of the above technical solution:

[0016] The protective outer shell 2 has two sliding grooves on its left and right sides, and a locking block is fixedly connected inside the sliding groove;

[0017] As a further description of the above technical solution:

[0018] The outer side of the card block engages with the inner walls of the two card plates, and the outer side of the card plates is slidably connected to the inner wall of the groove.

[0019] This utility model has the following beneficial effects:

[0020] 1. In this utility model, the screw block is threadedly connected to the adjusting column. By rotating the screw block, the position of the adjusting plate and the fixed plate can be easily adjusted so that they fit tightly against the base plate. The entire installation process is simple to operate, without complicated tools and cumbersome steps, and achieves rapid installation, which greatly saves installation time and labor costs.

[0021] 2. In this utility model, the first protective shell and the second protective shell provide all-round protection for the terminal body. They can not only effectively prevent external objects from colliding and rubbing against the terminal body and avoid physical damage, but also play a certain role in insulation and dust prevention. The first protective shell and the second protective shell work together to completely wrap the terminal body, forming a closed protective space to prevent dust, moisture and other impurities from entering the interior of the terminal. This avoids these impurities from causing corrosion or short circuits to the overload protection device and other precision components inside the terminal, ensuring that the terminal can operate stably in various complex environments, extending the service life of the terminal and ensuring the reliability of the circuit system. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of a terminal with an overload protection device proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of a terminal fixing plate with an overload protection device proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of a terminal protective housing with an overload protection device proposed in this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of a terminal protective housing with an overload protection device proposed in this utility model;

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0027] Legend:

[0028] 1. Terminal body; 2. Protective housing one; 3. Protective housing two; 4. Fixing plate; 5. Adjusting plate; 6. Adjusting groove one; 7. Adjusting groove two; 8. Adjusting column; 9. Tightening block; 10. Spring one; 11. Mounting plate; 12. Spring two; 13. Clamping plate; 14. Slide groove; 15. Clamping block. Detailed Implementation

[0029] 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.

[0030] Reference Figures 1 to 2 This utility model provides an embodiment of a terminal with an overload protection device, comprising a terminal body 1. The terminal body 1 is the core of the entire terminal with overload protection device. An overload protection device is installed inside the terminal body 1. The overload protection device in this application is prior art. Its function is to respond quickly when an overload occurs in the circuit, i.e., the current exceeds a preset safety threshold, and to cut off the circuit through a specific action mechanism, thereby preventing damage to the terminal and connected electrical equipment due to excessive current, and ensuring the safe and stable operation of the entire circuit system. The structure of the overload protection device is not the direction of improvement in this application. Without going into detail, the specific overload protection device structure can be selected from the PT secondary circuit overload protection device disclosed in CN206225990U. Installed in the PT terminal box, the protection device includes a miniature circuit breaker, a resettable fuse, a measurement circuit connection indicator light, and a test interface. The input terminal of the miniature circuit breaker is used to connect to the PT secondary circuit terminal, and the output terminal of the miniature circuit breaker is connected to the input terminal of the resettable fuse. The output terminal of the resettable fuse is connected to the input terminal of the measurement circuit connection indicator light, and the output terminal of the resettable fuse is also connected to the test interface, which is used to connect testing instruments. Compared with the prior art, this utility model has the advantages of good protection effect, low cost, small size, and easy installation.

[0031] A protective shell 1 2 is detachably connected to the front side of the terminal body 1, and a protective shell 2 3 is detachably connected to the rear side of the terminal body 1. The protective shell 1 2 and the protective shell 2 3 not only provide physical protection for the front part of the terminal body 1 to prevent damage to the terminal from collisions and friction of external objects, but also play a certain role in insulation and dust prevention, preventing dust, moisture and other impurities from entering the interior of the terminal and affecting its performance. The protective shell 2 3 and the protective shell 1 2 work together to wrap the terminal body 1, forming a complete protective space.

[0032] Fixing plates 4 are fixedly connected to both sides of the protective outer shell 1 2 and the protective outer shell 2 3. The fixing plates 4 play a crucial connecting and supporting role in the entire device. An adjusting plate 5 is rotatably connected inside the fixing plate 4. The main function of the adjusting plate 5 is to achieve a tight fit with the substrate to be installed through rotation and position adjustment. An adjusting groove 2 7 is formed inside the fixing plate 4, and an adjusting column 8 is fixedly connected to the top of the adjusting plate 5. When the adjusting plate 5 needs position adjustment, the adjusting column 8 slides within the adjusting groove 2 7 as the adjusting plate 5 moves, serving a guiding and positioning function.

[0033] The external sliding connection of the adjusting column 8 is to the inner wall of the adjusting groove 7. The function of the adjusting groove 7 is to provide guidance and constraint for the sliding of the adjusting column 8, ensuring that the adjusting column 8 remains stable and accurate during movement, thereby ensuring the stability and reliability of the adjusting plate 5 during the adjustment process. An adjusting component is provided on the outside of the adjusting column 8. The adjusting component includes a screw block 9. By rotating the screw block 9, the screw block 9 can move up and down on the outside of the adjusting column 8 using the principle of thread transmission.

[0034] The screw block 9 is internally threaded to the outside of the adjusting column 8. The adjusting plate 5 has an adjusting groove 6 inside. The fixed plate 4 is externally slidably connected to the inner wall of the adjusting groove 6. The adjusting groove 6 provides a channel and space for the fixed plate 4 to slide within the adjusting plate 5, allowing the adjusting plate 5 to move horizontally along the fixed plate 4, thereby achieving precise adjustment of the position of the adjusting plate 5 to meet the requirements of terminal installation position in different installation scenarios. The adjusting column 8 is externally fitted with a spring 10. One end of the spring 10 is fixedly connected to the bottom of the fixed plate 4. When the screw block 9 presses down on the fixed plate 4, the spring 10 is compressed.

[0035] The function of spring 10 is mainly twofold. On the one hand, spring 10 can absorb the external force generated during installation, playing a role in buffering and shock absorption, and preventing damage to the fixing plate 4, adjusting plate 5 and base plate due to excessive pressure. On the other hand, spring 10 will generate a reaction force after being compressed, which can make the fixing plate 4 and adjusting plate 5 fit more tightly on the base plate, enhancing the stability and reliability of the installation.

[0036] The other end of spring 10 is fixedly connected to the top of adjusting plate 5. When protective housing 12 and protective housing 23 need to be installed on the base plate, the screw block 9 is rotated downwards. The screw block 9 will press down on the fixing plate 4, and the fixing plate 4 will press down on spring 10 after being subjected to force. Spring 10 is compressed and absorbs external force, and generates a reaction force on the fixing plate 4 and adjusting plate 5, so that the fixing plate 4 and adjusting plate 5 can be tightly attached to the base plate, thereby achieving a stable installation of the terminal.

[0037] Reference Figures 3 to 5The protective housing 1 2 has multiple mounting components on its exterior. The mounting components include a mounting plate 11. One side of the mounting plate 11 is fixedly connected to the rear side of the protective housing 1 2. The other side of the mounting plate 11 is fixedly connected to two springs 2 12. The mounting plate 11 provides a base for the installation and fixation of the springs 2 12, so that the springs 2 12 can function stably.

[0038] The other end of the second spring 12 is fixedly connected to a retaining plate 13. Two sliding grooves 14 are opened on both the left and right sides of the interior of the second protective shell 3. A retaining block 15 is fixedly connected inside the sliding groove 14. The outside of the retaining block 15 engages with the inner wall of the two retaining plates 13. The function of the retaining plate 13 is to cooperate with the retaining block 15 to achieve the connection and fixation of the first protective shell 2 and the second protective shell 3 by engaging, so as to ensure that the connection between the two is tight and stable.

[0039] When the locking block 15 is pushed into the interior of the two locking plates 13, the locking plates 13 are forced to press the springs 12 to both sides, and the springs 12 are compressed. When the outside of the locking block 15 contacts the inner wall of the two locking plates 13, the springs 12 are no longer compressed and will return to their original position due to their elastic properties, thereby pushing the two locking plates 13 to fully engage with the locking block 15. The outside of the locking plates 13 is slidably connected to the inner wall of the slide groove 14. The slide groove 14 ensures the accurate movement direction of the locking plates 13 during installation, thereby ensuring that the locking plates 13 and the locking blocks 15 can accurately engage, improving the accuracy and reliability of the installation of the protective shell 1 2 and the protective shell 2 3.

[0040] Working principle: First, place the terminal body 1 in a suitable position. Then, put the protective shell 1 2 and the protective shell 2 3 on the outside of the terminal body 1. Next, align the two sides of the protective shell 1 2 and the protective shell 2 3. Place the locking plate 13 into the inner wall of the corresponding slide groove 14. At this time, the locking block 15 contacts the two locking plates 13. Then, forcefully push the locking block 15 into the interior of the two locking plates 13. As the locking block 15 moves, the locking plates 13 are forced to squeeze the spring 2 12 to both sides. The spring 2 12 is compressed. When the outside of the locking block 15 contacts the inner wall of the two locking plates 13, the spring 2 12 is no longer compressed and returns to its original position due to its elastic properties. At the same time, it can push the two locking plates 13 and the locking block 15 to fully engage, thereby installing the protective shell 1 2 and the protective shell 2 3 together.

[0041] Next, place the bottom of the fixing plate 4 on top of the substrate to be installed. Then, adjust the position of the adjusting plate 5 through the adjusting groove 6. At the same time, the adjusting column 8 will slide on the inner wall of the adjusting groove 7, so that the adjusting plate 5 is in contact with the substrate. Then, rotate the screw block 9 downward. The screw block 9 rotates outside the adjusting column 8 and presses the fixing plate 4 downward. The fixing plate 4 is forced to press the spring 10 downward. At this time, the spring 10 is compressed and absorbs the external force, and generates a reaction force on the fixing plate 4 and the adjusting plate 5. When the fixing plate 4 and the adjusting plate 5 are completely in contact with the outside of the substrate, stop rotating the screw block 9. In this way, the protective shell 2 and the protective shell 3 can be installed on the substrate.

[0042] 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 terminal with an overload protection device, comprising a terminal body (1), wherein the terminal body (1) is provided with an overload protection device inside, characterized in that: The terminal body (1) is detachably connected to a protective shell one (2) on its outer front side, and a protective shell two (3) is detachably connected to the outer rear side of the terminal body (1). The left and right sides of the protective shell one (2) and the left and right sides of the protective shell two (3) are fixedly connected to a fixing plate (4). An adjusting plate (5) is rotatably connected inside the fixing plate (4). An adjusting groove two (7) is opened inside the fixing plate (4). An adjusting column (8) is fixedly connected to the top of the adjusting plate (5). An adjusting component is provided on the outside of the adjusting column (8). Multiple mounting components are provided on the outside of the protective shell one (2).

2. A terminal with overload protection device according to claim 1, characterized in that: The adjustment assembly includes a screw block (9), the screw block (9) is internally threaded to the outside of the adjustment column (8), the adjustment plate (5) has an adjustment groove (6) inside, and a spring (10) is sleeved on the outside of the adjustment column (8).

3. A terminal with overload protection device according to claim 2, characterized in that: The fixed plate (4) is externally slidably connected to the inner wall of the first adjustment groove (6), and the adjustment column (8) is externally slidably connected to the inner wall of the second adjustment groove (7).

4. A terminal with overload protection device according to claim 2, characterized in that: One end of the spring (10) is fixedly connected to the bottom of the fixing plate (4), and the other end of the spring (10) is fixedly connected to the top of the adjusting plate (5).

5. A terminal with overload protection device according to claim 1, characterized in that: The mounting assembly includes a mounting plate (11), one side of which is fixedly connected to the rear side of the outer side of the protective shell (2), and the other side of the mounting plate (11) is fixedly connected to two springs (12), and the other end of the springs (12) is fixedly connected to a retaining plate (13).

6. A terminal with overload protection device according to claim 5, characterized in that: The protective outer shell 2 (3) has two sliding grooves (14) on both the left and right sides inside, and a locking block (15) is fixedly connected inside the sliding groove (14).

7. A terminal with overload protection device according to claim 6, characterized in that: The outer side of the card block (15) engages with the inner walls of the two card plates (13), and the outer side of the card plates (13) is slidably connected to the inner wall of the groove (14).

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