Plug-in magnetic core multifunctional sensor protection structure

Abstract

This invention belongs to the field of sensor technology, specifically a protective structure for a plug-in magnetic core multifunctional sensor. It includes two housings, with a fixing sleeve fixedly connected to the bottom of one of the housings. The invention uses a movable clamping plate to move a T-shaped rod, which is then compressed by a second spring. This compresses the two housings between the cable, releasing the force on the clamping plate. The second spring, in its compressed state, returns to its original position, causing the clamping plate to fix the cable. When not in use, the plug is inserted through a limiting groove and into a limiting rod. The plug causes a trapezoidal block to contact and press against a ball bearing. The ball bearing causes a connecting rod to slide on a positioning rod, compressing a first spring. When the connecting rod aligns with the slot, the first spring, in its compressed state, returns to its original position, causing the connecting rod to engage with the slot, thus fixing the plug. The fixing sleeve and sealing ring seal the plug's interface, preventing dust from entering and protecting the plug.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, specifically to a protective structure for a plug-in magnetic core multifunctional sensor. Background Technology

[0002] Transient and transient processes in the power grid are important indicators of its operational status. Currently, overvoltage protection and data monitoring of primary power lines are given high priority. With the promotion and construction of smart and digital substations and the grid connection of various new energy sources, the electromagnetic environment of secondary systems is becoming increasingly complex. The following problems are common in power grids: 1. Difficulty in detecting grounding hazards: Equipment grounding reliability is a crucial measure to ensure equipment operation and personal safety. Grounding is a concealed project, and due to its numerous and widespread locations, it is difficult to detect hidden problems such as rust, loosening, breakage, and missing connections in the grounding wires of power equipment during actual operation. Equipment insulation aging can also lead to... The increased leakage current poses a risk that cannot be detected in time. Multiple grounding points in AC systems lack monitoring methods, posing safety hazards to equipment and personnel. Furthermore, there are no monitoring methods for the impact of transient potential rise in the primary grounding grid on secondary systems. 2. Overvoltage accident analysis lacks data support: Microelectronic devices in power systems are prone to malfunctions, reduced equipment lifespan, and data loss due to transient overvoltages and currents. Currently, overvoltage protection engineering in power secondary systems relies entirely on experience; there are no methods to evaluate the effectiveness of overvoltage protection; transient data cannot be reproduced; fault analysis lacks data support; and similar accidents repeatedly occur and cannot be eradicated.

[0003] Chinese patented invention CN222259420U discloses a non-contact plug-in magnetic core multifunctional sensor, belonging to the field of sensor technology. It includes an upper housing and a first rotating shaft. There are two upper housings, each rotatably connected via the first rotating shaft. A leakage current plug-in magnetic core is fixedly connected to the inner wall of each of the two upper housings. Two lower housings are fixedly connected to the lower surfaces of the two upper housings, each rotatably connected via the first rotating shaft. A PCBA board assembly is provided on the inner wall of each of the two lower housings. The first rotating shaft facilitates the rotation of the upper and lower housings, allowing the leakage current plug-in magnetic core and PCBA board assembly to be clamped onto the cable surface. The inclusion of locking blocks and plates facilitates the fixation of the upper and lower housings, enabling installation without interruption of power or wiring, making installation convenient and quick.

[0004] However, this device still has some problems. In actual use, the sensor is usually equipped with a plug for data transmission and power connection with external devices. However, when the sensor is not in use, the plug is often exposed to the external environment and lacks an effective protective structure. Dust, moisture, oil, and other impurities can easily enter the plug, leading to poor contact, oxidation, and corrosion, which in turn affects the normal operation of the sensor. Moreover, the device cannot quickly secure the cable. Therefore, we propose a plug-in magnetic core multifunctional sensor protection structure to solve the above problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a protective structure for a plug-in magnetic core multifunctional sensor, solving the problems mentioned in the background section.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] A protective structure for a plug-in magnetic core multifunctional sensor includes two housings. A fixing sleeve is fixedly connected to the bottom of one of the housings. A data cable is located at the bottom of one of the housings, and a plug is electrically connected to the end of the data cable. Limiting rods are fixedly connected to the inner walls of both sides of the fixing sleeve. A groove with one open side is formed on the left and right inner walls of the fixing sleeve. A positioning rod is fixedly connected to one inner wall of each groove, and a connecting rod is slidably connected to the positioning rod. A ball bearing is embedded at the end of the connecting rod, and a first spring is fixedly connected between the other end of the connecting rod and the corresponding inner wall of the groove. L-shaped rods are provided on both sides of the fixing sleeve. The end of the rod extends into the corresponding groove and is fixedly connected to one side of the connecting rod. A sealing ring is fixedly connected to the plug, and one side of the sealing ring is in movable contact with the end of the fixing sleeve. Two limiting grooves with one side open are opened on the plug, and the limiting grooves are engaged with the corresponding limiting rods. Trapezoidal blocks are fixedly connected to both sides of the plug. The trapezoidal blocks have slots that are engaged with the corresponding connecting rods. Support blocks are fixedly connected to the top and bottom of the housing. Two T-shaped rods are provided on the support blocks. The ends of the two T-shaped rods on the same support block are fixedly connected to the same clamping plate. A second spring is fixedly connected between one side of the clamping plate and one side of the corresponding support block.

[0010] Furthermore, the first spring is movably sleeved on the corresponding positioning rod.

[0011] Furthermore, the second spring is movably sleeved on the corresponding T-shaped rod.

[0012] Furthermore, the support block has two guide holes, and the support block is slidably connected to the outer side of the corresponding T-shaped rod through the guide holes.

[0013] Furthermore, both of the two housings are provided with connecting blocks at the top and bottom, and the connecting blocks are threadedly connected to the housings by two bolts.

[0014] Furthermore, a circular groove is provided on the connecting rod, and the connecting rod is slidably connected to the corresponding positioning rod through the circular groove.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a protective structure for a multifunctional sensor with a plug-in magnetic core, which has the following advantages:

[0017] This invention utilizes a movable clamp to move a T-shaped rod and compress a second spring, securing the two housings between the cable and releasing the force on the clamp. The compressed second spring then returns to its original position, causing the clamp to fix the cable. This allows for quick fixing of cables of different sizes. Pulling the L-shaped rods on both sides causes the connecting rod to slide on the positioning rod, compressing the first spring. The connecting rod causes the ball bearing to separate from the slot, allowing the plug to be removed for use. When not in use, the plug is inserted through the limiting slot and the limiting rod. The plug causes the trapezoidal block to contact and press against the ball bearing, which in turn causes the connecting rod to slide on the positioning rod, compressing the first spring. When the connecting rod aligns with the slot, the compressed first spring returns to its original position, causing the connecting rod to engage with the slot, thus fixing the plug. A fixing sleeve and a sealing ring seal the plug interface to prevent dust from entering. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the inclined three-dimensional structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the cut-open three-dimensional structure of the shell of this utility model;

[0021] Figure 4 This is a partial three-dimensional structural diagram of the present invention.

[0022] In the diagram: 1. Housing; 2. Fixing sleeve; 3. Data cable; 4. Plug; 5. Limiting rod; 6. Groove; 7. Positioning rod; 8. Connecting rod; 9. Ball bearing; 10. First spring; 11. L-shaped rod; 12. Sealing ring; 13. Limiting groove; 14. Trapezoidal block; 15. Slot; 16. Support block; 17. T-shaped rod; 18. Clamping plate; 19. Second spring; 20. Connecting block; 21. Bolt. Detailed Implementation

[0023] 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.

[0024] Example

[0025] like Figure 1-4 As shown in the figure, an embodiment of the present invention provides a protective structure for a plug-in magnetic core multifunctional sensor, comprising two housings 1. A fixing sleeve 2 is fixedly connected to the bottom of one of the housings 1. A data cable 3 is provided at the bottom of one of the housings 1, and a plug 4 is electrically connected to the end of the data cable 3. Limiting rods 5 are fixedly connected to the inner walls of both sides of the fixing sleeve 2. A groove 6 with one side open is provided on both the left and right inner walls of the fixing sleeve 2. A positioning rod 7 is fixedly connected to one side of the inner wall of the groove 6. A connecting rod 8 is slidably connected to the positioning rod 7. A ball bearing 9 is embedded at the end of the connecting rod 8. A first spring 10 is fixedly connected between the other end of the connecting rod 8 and the corresponding inner wall of the groove 6. L-shaped rods 11 are provided on both sides of the fixing sleeve 2. The end of 11 extends into the corresponding groove 6 and is fixedly connected to one side of the connecting rod 8. A sealing ring 12 is fixedly connected to the plug 4. One side of the sealing ring 12 is in movable contact with the end of the fixing sleeve 2. Two limiting grooves 13 with one side open are opened on the plug 4. The limiting grooves 13 are engaged with the corresponding limiting rods 5. Trapezoidal blocks 14 are fixedly connected to the other two sides of the plug 4. The trapezoidal blocks 14 have slots 15. The slots 15 are engaged with the corresponding connecting rods 8. Support blocks 16 are fixedly connected to the top and bottom of the housing 1. Two T-shaped rods 17 are provided on the support blocks 16. The ends of the two T-shaped rods 17 on the same support block 16 are fixedly connected to the same clamping plate 18. A second spring 19 is fixedly connected between one side of the clamping plate 18 and one side of the corresponding support block 16.

[0026] During use, the second spring 19 drives the clamp 18 to fix the cable, thereby quickly fixing cables of different sizes. At the same time, the fixing sleeve 2 and the sealing ring 12 seal the interface of the plug 4 to prevent dust from entering the interface of the plug 4.

[0027] In use, moving the clamping plate 18 causes the corresponding T-shaped rod 17 to move. During this movement, the clamping plate 18 compresses the corresponding second spring 19, securing the two housings 1 between the cable. Then, releasing the force on the clamping plate 18 returns the compressed second spring 19 to its original position. The second spring 19 then moves the clamping plate 18 to secure the cable, allowing for quick securing of cables of different sizes. Pulling the L-shaped rods 11 on both sides causes the corresponding connecting rod 8 to move. The connecting rod 8 slides on the positioning rod 7, compressing the corresponding first spring 10 during its movement. Simultaneously, the connecting rod 8 causes the ball bearing 9 to separate from the corresponding slot 15. Next, pull the plug 4 to remove it for use. When not in use, insert the plug 4 into the corresponding limiting rod 5 through the limiting groove 13. The plug 4 drives the trapezoidal block 14 to contact and squeeze the corresponding ball 9. Under the action of the squeezing force, the ball 9 moves and rotates. The ball 9 drives the connecting rod 8 to slide on the corresponding positioning rod 7 and compress the first spring 10. When the connecting rod 8 is aligned with the corresponding slot 15, the first spring 10, which is in a compressed state, returns to its original state. The first spring 10 drives the connecting rod 8 to engage with the slot 15, thereby fixing the plug 4. The interface of the plug 4 is sealed by the fixing sleeve 2 and the sealing ring 12 to prevent dust from entering the interface of the plug 4.

[0028] In some embodiments, the first spring 10 is movably sleeved on the corresponding positioning rod 7.

[0029] The positioning rod 7 is set to limit the connecting rod 8. When the connecting rod 8 moves, it can only slide on the positioning rod 7 to prevent deviation.

[0030] In some embodiments, the second spring 19 is movably sleeved on the corresponding T-shaped rod 17.

[0031] The second spring 19 serves to reset the device.

[0032] In some embodiments, the support block 16 has two guide holes, and the support block 16 is slidably connected to the outer side of the corresponding T-shaped rod 17 through the guide holes.

[0033] In some embodiments, the top and bottom of the two housings 1 are provided with connecting blocks 20, and the connecting blocks 20 are threadedly connected to the housings 1 by two bolts 21.

[0034] The two housings 1 are quickly secured using connecting block 20 and bolt 21.

[0035] In some embodiments, a circular groove is provided on the connecting rod 8, and the connecting rod 8 is slidably connected to the corresponding positioning rod 7 through the circular groove.

[0036] The connecting rod 8 serves to lock the connection in place.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A protection structure for a plug-in magnetic core multifunctional sensor, comprising two housings (1), characterized in that: A fixed sleeve (2) is fixedly connected to the bottom of one of the two housings (1). A data cable (3) is provided at the bottom of one of the two housings (1). A plug (4) is electrically connected to the end of the data cable (3). Limiting rods (5) are fixedly connected to the inner walls on both sides of the fixed sleeve (2). A groove (6) with one side open is provided on the inner wall of the left side and the inner wall of the fixed sleeve (2). A positioning rod (7) is fixedly connected to the inner wall of one side of the groove (6). A connecting rod (8) is slidably connected to the positioning rod (7). A ball bearing (9) is embedded at the end of the connecting rod (8). A first spring (10) is fixedly connected between the other end of the connecting rod (8) and the inner wall of the corresponding groove (6). An L-shaped rod (11) is provided on both sides of the fixed sleeve (2). The end of the L-shaped rod (11) extends into the corresponding groove (6) and connects with the connecting rod (9). 8) is fixedly connected to one side of the plug (4), and a sealing ring (12) is fixedly connected to the plug (4). One side of the sealing ring (12) is in contact with the end of the fixed sleeve (2). Two limiting grooves (13) with one side open are opened on the plug (4). The limiting grooves (13) are engaged with the corresponding limiting rods (5). Trapezoidal blocks (14) are fixedly connected to the other two sides of the plug (4). The trapezoidal blocks (14) are provided with slots (15). The slots (15) are engaged with the corresponding connecting rods (8). Support blocks (16) are fixedly connected to the top and bottom of the housing (1). Two T-shaped rods (17) are provided on the support blocks (16). The ends of the two T-shaped rods (17) on the same support block (16) are fixedly connected to the same clamping plate (18). A second spring (19) is fixedly connected between one side of the clamping plate (18) and one side of the corresponding support block (16).

2. The protective structure for a plug-in magnetic core multifunctional sensor according to claim 1, characterized in that: The first spring (10) is movably sleeved on the corresponding positioning rod (7).

3. The protective structure for a plug-in magnetic core multifunctional sensor according to claim 2, characterized in that: The second spring (19) is movably sleeved on the corresponding T-shaped rod (17).

4. The protective structure for a plug-in magnetic core multifunctional sensor according to claim 3, characterized in that: The support block (16) has two guide holes, and the support block (16) is slidably connected to the outer side of the corresponding T-shaped rod (17) through the guide holes.

5. The protective structure for a plug-in magnetic core multifunctional sensor according to claim 4, characterized in that: Both of the housings (1) are provided with connecting blocks (20) at the top and bottom, and the connecting blocks (20) are threadedly connected to the housings (1) by two bolts (21).

6. The protective structure for a plug-in magnetic core multifunctional sensor according to claim 5, characterized in that: The connecting rod (8) has a circular groove, and the connecting rod (8) is slidably connected to the corresponding positioning rod (7) through the circular groove.

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