High-precision current sensor

Abstract

The utility model relates to the technical field of current sensor devices, and discloses a high-precision current sensor, which comprises a shell I, a connecting wire end and a mounting plate, the exterior of the shell I is rotatably connected with a shell II, the exterior of the shell II is provided with a fixing assembly, and the bottom of the shell II is provided with a connecting assembly; the fixing assembly comprises a clamping block, the clamping block is fixedly connected to the outer portion of the connecting line end, a clamping groove is formed in the middle of the second shell, the clamping groove is connected with the clamping block in a clamped mode, and a first spring is fixedly connected to the interior of the clamping groove. According to the utility model, the clamping block outside the connecting wire end is clamped with the clamping groove of the shell II, the spring I pushes the connecting plate to press the clamping block to form elastic locking, the clamping block is aligned with the clamping groove to be inserted, and the elastic force of the spring automatically completes fixation; during dismounting, the spring is compressed by pressing the connecting plate, clamping can be released, and the replacement and installation efficiency of the connecting wire end is improved.

Description

Technical Field

[0001] This utility model relates to the field of current sensor device technology, and in particular to a high-precision current sensor. Background Technology

[0002] A sensor is a detection device that can sense the information being measured and transform the sensed information into an electrical signal or other required form of information output according to certain rules, so as to meet the requirements of information transmission, processing, storage, display, recording and control.

[0003] The connection wires are usually fixed to the mounting plate by welding or screws. When replacing the connection wires, it is necessary to use tools such as soldering irons to remove the solder joints and screws. The operation is cumbersome, and high-temperature welding can easily damage the internal circuit of the sensor, which can lead to poor contact and affect the signal transmission accuracy. This makes it difficult to meet the needs of rapid installation and flexible maintenance under complex working conditions. Therefore, a high-precision current sensor is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-precision current sensor, which aims to improve the problems of cumbersome operation of replacing the connection terminal and inconvenience of disassembly and assembly under complex working conditions in the prior art.

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

[0006] A high-precision current sensor includes a housing, a connecting wire terminal, and a mounting plate. A second housing is rotatably connected to the outside of the first housing. A fixing component is mounted on the outside of the second housing, and a connecting component is mounted on the bottom of the second housing.

[0007] The fixing component includes a locking block, which is fixedly connected to the outside of the connecting wire end. A locking groove is provided in the middle of the outer shell, which engages with the locking block. A spring is fixedly connected inside the locking groove, and a connecting plate is fixedly connected to the outside of the spring.

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

[0009] The connecting assembly includes a housing, which is fixedly connected to the outside of the outer shell 2. A circular locking post is slidably connected inside the housing. A slot is provided in the middle of the mounting plate, and the slot engages with the circular locking post.

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

[0011] The connecting plate is slidably connected inside the slot, and the connecting plate is in contact with the card block;

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

[0013] A second spring is sleeved on the outside of the circular locking post, and a pull ring is provided in the middle of the circular locking post;

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

[0015] A fixing plate is fixedly connected to the outside of the first outer shell and the second outer shell, and a bolt is threadedly connected to the middle of the fixing plate;

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

[0017] The fixing plate has a slot in the middle, and the bolt is threaded into the inside of the slot.

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

[0019] A through hole is provided in the middle of the outer shell;

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

[0021] The connecting wire end is slidably connected to the outside of the second outer casing.

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

[0023] 1. In this utility model, the external locking block of the connecting wire end is engaged with the slot of the outer shell 2. The spring 1 pushes the connecting plate to press the locking block, forming an elastic lock. When the locking block is aligned with the slot and inserted, the spring force automatically completes the fixation. When disassembling, pressing the connecting plate to compress the spring can release the engagement and improve the efficiency of replacing and installing the connecting wire end.

[0024] 2. In this utility model, the circular locking pin is inserted into the hole groove of the mounting plate under the action of the second spring. The locking pin can be manually pulled out of the hole groove by the pull ring, realizing the quick installation and removal of the sensor and the mounting plate, and improving the applicability of the device. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a high-precision current sensor proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the connection wire end of a high-precision current sensor proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the slot structure of a high-precision current sensor proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the circular locking post of a high-precision current sensor proposed in this utility model.

[0029] Legend:

[0030] 1. Outer shell one; 2. Outer shell two; 3. Housing; 4. Connecting wire end; 5. Mounting plate; 6. Bolt; 7. Fixing plate; 8. Hole groove; 9. Slot; 10. Spring one; 11. Connecting plate; 12. Locking block; 13. Round locking post; 14. Spring two; 15. Pull ring; 16. Hole groove; 17. Through hole. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1-3 This utility model provides an embodiment of a high-precision current sensor, comprising a housing 1, a connecting wire end 4, and a mounting plate 5. A second housing 2 is rotatably connected to the outside of the first housing 1. A fixing component is mounted on the outside of the second housing 2, and a connecting component is mounted on the bottom of the second housing 2. The fixing component includes a locking block 12, which is fixedly connected to the outside of the connecting wire end 4. A slot 9 is formed in the middle of the second housing 2, and the slot 9 engages with the locking block 12. A spring 10 is fixedly connected inside the slot 9, and a connecting plate 11 is fixedly connected to the outside of the spring 10. The connecting plate 11 is slidably connected inside the slot 9 and contacts the locking block 12. The locking block 12 engages with the slot 9. Under the action of the spring 10, the connecting plate 11 is pushed tightly against the locking block 12, fixing the connecting wire end 4 inside the second housing 2. During disassembly, the locking block 12 is disengaged from the slot 9 under external force, and the connecting wire end 4 can be fixed manually by pushing and pulling, simplifying the installation and maintenance process. A fixing plate 7 is fixedly connected to the exterior of outer casing 1 and outer casing 2. A bolt 6 is threaded into the center of the fixing plate 7. A slot 8 is formed in the center of the fixing plate 7, and the bolt 6 is threaded into the inside of the slot 8. Outer casing 1 and outer casing 2 form an electromagnetic shielding layer, which is fastened into a closed structure with the bolt 6 to reduce the influence of external electromagnetic interference on the sensing element and ensure high-precision measurement. A through hole 17 is formed in the center of outer casing 1. The connecting wire end 4 is slidably connected to the outside of outer casing 2. The through hole 17 is a channel through which the current conductor passes. When the measured current passes through the conductor, an alternating magnetic field is generated around the through hole 17.

[0033] Reference Figure 1 , Figure 2 and Figure 4The connecting assembly includes a housing 3, which is fixedly connected to the outside of the outer casing 2. A circular locking post 13 is slidably connected inside the housing 3. A slot 16 is formed in the middle of the mounting plate 5, and the slot 16 engages with the circular locking post 13. A spring 14 is sleeved on the outside of the circular locking post 13, and a pull ring 15 is provided in the middle of the circular locking post 13. Under the elastic force of the spring 14, the circular locking post 13 engages with the slot 16 of the mounting plate 5, fixing the sensor to the mounting plate 5. For disassembly, simply pull the pull ring 15, causing the circular locking post 13 to slide upwards against the elastic force of the spring 14, disengaging the circular locking post 13 from the slot 16, facilitating sensor removal. The pull ring 15 and spring structure enable quick installation and separation of the sensor from the mounting plate 5, improving installation and maintenance efficiency.

[0034] Working principle: When installing the connector terminal 4, align the locking block 12 on the outside of the connector terminal 4 with the slot 9 of the outer casing 2 and insert it. Push the connecting plate 11 to compress the spring 10 until the locking block 12 is fully embedded in the slot 9. The elastic force of the spring 10 keeps the connecting plate 11 tightly against the locking block 12, fixing the locking block 12 and preventing loose wiring from affecting signal transmission. This adapts to different wiring requirements. When replacing the connector terminal 4, press the connecting plate 11 towards the outer casing 2 to compress the spring, and then pull the connector terminal 4 outwards to make it contact and fix with the slot 9, making it easy to remove and replace the connector terminal 4.

[0035] Pulling the pull ring 15 causes the circular locking post 13 to slide upwards inside the housing 3, simultaneously compressing the second spring 14. When the circular locking post 13 aligns with the slot 16 of the mounting plate 5, releasing the pull ring 15 allows the circular locking post 13 to insert into the slot 16 of the mounting plate 5 under the elastic force of the second spring 14, thus fixing the sensor to the mounting plate 5. For disassembly, pulling the pull ring 15 lifts the circular locking post 13, compressing the second spring 14 and disengaging it from the slot 16 to remove the sensor, enabling quick assembly and disassembly and improving maintenance efficiency.

[0036] 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 high-precision current sensor, comprising a housing (1), a connecting wire terminal (4), and a mounting plate (5), characterized in that: The outer shell 1 (1) is rotatably connected to the outer shell 2 (2), the outer shell 2 (2) is equipped with a fixing component, and the bottom of the outer shell 2 (2) is equipped with a connecting component; The fixing component includes a locking block (12), which is fixedly connected to the outside of the connecting wire end (4). The second outer shell (2) has a slot (9) in the middle, which engages with the locking block (12). A spring (10) is fixedly connected inside the slot (9), and a connecting plate (11) is fixedly connected to the outside of the spring (10).

2. The high-precision current sensor according to claim 1, characterized in that: The connecting assembly includes a housing (3), which is fixedly connected to the outside of the outer shell (2). A circular locking post (13) is slidably connected inside the housing (3). A slot (16) is provided in the middle of the mounting plate (5), and the slot (16) is engaged with the circular locking post (13).

3. A high-precision current sensor according to claim 1, characterized in that: The connecting plate (11) is slidably connected inside the slot (9), and the connecting plate (11) is in contact with the card block (12).

4. A high-precision current sensor according to claim 2, characterized in that: The circular locking post (13) is fitted with a spring (14) on its outside, and a pull ring (15) is provided in the middle of the circular locking post (13).

5. A high-precision current sensor according to claim 1, characterized in that: The outer shell 1 (1) and the outer shell 2 (2) are fixedly connected by a fixing plate (7), and the middle part of the fixing plate (7) is threaded with a bolt (6).

6. A high-precision current sensor according to claim 5, characterized in that: The fixing plate (7) has a slot (8) in the middle, and the bolt (6) is threaded into the inside of the slot (8).

7. A high-precision current sensor according to claim 1, characterized in that: The outer shell (1) has a through hole (17) in the middle.

8. A high-precision current sensor according to claim 1, characterized in that: The connecting wire end (4) is slidably connected to the outside of the outer shell (2).

Images