Structure of combined onboard Hall current sensor

Abstract

The utility model relates to the field of Hall current sensors, and discloses a structure of a combined onboard Hall current sensor, which comprises a shell, a sensing assembly arranged in the shell, a PCB (printed circuit board) arranged at the top of the shell, a winding arranged at the bottom of the PCB, and a dustproof assembly arranged on the outer side of the winding. The sensing assembly comprises a mounting groove, the mounting groove is formed in the shell, a magnetic ring is mounted on the inner wall of the mounting groove, a rubber ring is arranged on the outer side of the magnetic ring, and a placement shell is fixedly connected to the inner wall of the rubber ring. According to the on-board structure, the magnetic ring and the winding are integrated on the PCB, so that the sensor is directly installed on the PCB, the requirement for an external lead is reduced, the wiring distance is shortened, the size is reduced, meanwhile, the anti-interference capability is enhanced, the installation process is simplified, the overall performance of a product is improved, and the on-board structure has remarkable advantages.

Description

Technical Field

[0001] This utility model relates to the field of Hall current sensors, and in particular to the structure of a combined onboard Hall current sensor. Background Technology

[0002] Hall effect current sensors are based on the Hall effect principle and are used to measure current. They indirectly measure the magnitude of the current flowing through a conductor by detecting changes in the magnetic field. When in operation, current flows through the conductor inside the sensor, generating a magnetic field. The Hall element generates an electromotive force (EMF) under the influence of this magnetic field, and this EMF is proportional to the current.

[0003] Traditional current sensors require the primary current to pass through a center hole and then be led to the PCB board via secondary terminals. This mounting method typically requires separate leads on the outside of the board, taking up a lot of space and making installation complex.

[0004] To address the above problems, a combined onboard Hall current sensor structure is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a structure for a combined onboard Hall current sensor, which aims to improve the problem that in the prior art, current sensors need to pass through a central hole to allow primary current to pass through, and then lead the current to the PCB board through secondary terminals. This installation method usually requires independent leads outside the board, which occupies a lot of space and is complicated to install.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a structure of a combined onboard Hall current sensor, including a housing, a sensing component disposed inside the housing, a PCB board disposed on the top of the housing, a winding wire disposed on the bottom of the PCB board, and a dustproof component disposed on the outside of the winding wire.

[0007] The sensing component includes a mounting slot, which is formed inside the housing. A magnetic ring is installed on the inner wall of the mounting slot, and a rubber ring is provided on the outer side of the magnetic ring. A placement shell is fixedly connected to the inner wall of the rubber ring.

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

[0009] The dustproof component includes a cover plate, the inner wall of which is disposed on the outer side of the winding, the cover plate having a limiting groove, and a tail flap fixedly connected to the outer side of the cover plate.

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

[0011] The outer side of the tail flap is fixedly connected to the outer side of the placement shell, and the outer side of the cover plate is disposed on the top of the placement shell.

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

[0013] The outer side of the winding is located inside the placement shell.

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

[0015] The housing is made of a transparent material.

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

[0017] The magnetic ring is circular.

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

[0019] The rubber ring is circular.

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

[0021] The cover plate has a certain degree of elasticity.

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

[0023] 1. In this utility model, by integrating the magnetic ring and winding wire on the PCB board, the sensor is directly mounted on the PCB, reducing the need for external leads, shortening the wiring distance, reducing the volume, and enhancing the anti-interference capability. This onboard structure not only simplifies the installation process but also improves the overall performance of the product, and has significant advantages.

[0024] 2. In this utility model, the wire is wound through the limiting groove in the cover plate to enter the placement shell, which reduces the entry of dust, enhances the dustproof effect, and improves the stability and reliability of the sensor. Attached Figure Description

[0025] Figure 1 This is a perspective view of the structure of a combined onboard Hall current sensor proposed in this utility model.

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a schematic diagram of the placement shell of a combined onboard Hall current sensor proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the limiting groove in the structure of a combined onboard Hall current sensor proposed in this utility model.

[0029] Legend:

[0030] 1. Outer shell; 2. PCB board; 3. Mounting slot; 4. Magnetic ring; 5. Rubber ring; 6. Placement shell; 7. Cover plate; 8. Limiting slot; 9. Tail flap; 10. Winding wire. 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 Figure 1 - Figure 4 The present invention provides an embodiment of a combined onboard Hall current sensor, comprising a housing 1, a sensing component disposed inside the housing 1, a PCB board 2 disposed on the top of the housing 1, a winding 10 disposed on the bottom of the PCB board 2, and a dustproof component disposed on the outside of the winding 10.

[0033] The sensing component includes a mounting groove 3, which is located inside the housing 1. A magnetic ring 4 is installed on the inner wall of the mounting groove 3, and a rubber ring 5 is provided on the outer side of the magnetic ring 4. A housing 6 is fixedly connected to the inner wall of the rubber ring 5.

[0034] Specifically, the outer casing 1 protects the internal sensing components and PCB board 2. PCB board 2 connects and fixes the winding 10, and processes and transmits the electrical signals sensed by the winding 10. The dustproof component prevents dust and moisture from entering the area of ​​the winding 10, keeping the winding 10 clean and stable. The winding 10 converts the magnetic field changes sensed by the magnetic ring 4 into electrical signals. The mounting slot 3 is located inside the outer casing 1 to install the magnetic ring 4. The magnetic ring 4 is installed in the mounting slot 3 to sense external magnetic field changes. The rubber ring 5 seals and fixes the placement shell 6 to prevent external dust and moisture from entering. The placement shell 6 contains and protects the winding 10 to ensure its stability and safety.

[0035] Reference Figure 3 and Figure 4 The dustproof component includes a cover plate 7, the inner wall of which is located on the outside of the winding 10. The cover plate 7 has a limiting groove 8, and two tail lobes 9 are fixedly connected to the outside of the cover plate 7.

[0036] Specifically, the cover plate 7 is to prevent dust from entering, the limiting groove 8 is used to position and fix the winding 10, and the tail petal 9 further fixes and places the shell 6.

[0037] Reference Figure 1 - Figure 4The tail lobe 9 is fixedly connected to the outside of the placement shell 6. The outer side of the winding 10 is set inside the placement shell 6. The outer side of the cover plate 7 is set on the top of the placement shell 6. The placement shell 6 is made of transparent material. The magnetic ring 4 is circular. The rubber ring 5 is circular. The cover plate 7 has a certain elasticity.

[0038] Specifically, the tail flap 9 serves to fix the housing 6, which protects the winding 10 and ensures its stability within the sensor. The cover plate 7 seals the housing 6 and the area of ​​the winding 10 to prevent dust and moisture from entering. It has a certain elasticity to better fit the housing 6 and form an effective seal. The housing 6 is made of transparent material to facilitate inspection and maintenance of the winding 10. The winding 10 is placed inside and fixed externally by the tail flap 9. The top is sealed by the cover plate 7. The rubber ring 5 is used to seal and fix the housing 6 to prevent external dust and moisture from entering. The magnetic ring 4 has a circular structure and is installed in the mounting groove 3 to sense changes in the external magnetic field. The mounting groove 3 is opened inside the housing 1 to install the magnetic ring 4 and ensure its stability and correct position.

[0039] Working principle: In use, the magnetic ring 4 is installed into the mounting slot 3 and sealed with a rubber ring 5. The housing 6 is then fixed on the magnetic ring 4. The PCB board 2 is installed on top of the housing 1. The winding wire 10 enters the housing 6 through the limiting groove 8 in the cover plate 7 to reduce dust entry. When a changing magnetic field passes through the magnetic ring 4, the magnetic ring 4 senses the change in magnetic field. These changes are converted into electrical signals by the winding wire 10 and output through the PCB board 2. By integrating the magnetic ring 4 and the winding wire 10 on the PCB board 2, the need for external leads is reduced, the trace distance is shortened, the volume is reduced, and the anti-interference capability is enhanced.

[0040] 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 structure of a combined onboard Hall current sensor, comprising a housing (1), characterized in that: The housing (1) is provided with a sensing component inside, a PCB board (2) is provided on the top of the housing (1), a winding (10) is provided on the bottom of the PCB board (2), and a dustproof component is provided on the outside of the winding (10). The sensing component includes a mounting groove (3), which is opened inside the housing (1). A magnetic ring (4) is installed on the inner wall of the mounting groove (3), and a rubber ring (5) is provided on the outer side of the magnetic ring (4). A placement shell (6) is fixedly connected to the inner wall of the rubber ring (5).

2. The structure of a combined onboard Hall current sensor according to claim 1, characterized in that: The dustproof component includes a cover plate (7), the inner wall of the cover plate (7) is disposed on the outer side of the winding (10), the cover plate (7) has a limiting groove (8), and a tail flap (9) is fixedly connected to the outer side of the cover plate (7).

3. The structure of a combined onboard Hall current sensor according to claim 2, characterized in that: The tail lobe (9) is fixedly connected to the outside of the placement shell (6), and the cover plate (7) is disposed on the top of the placement shell (6).

4. The structure of a combined onboard Hall current sensor according to claim 1, characterized in that: The outer side of the winding (10) is located inside the placement shell (6).

5. The structure of a combined onboard Hall current sensor according to claim 1, characterized in that: The placement shell (6) is made of transparent material.

6. The structure of a combined onboard Hall current sensor according to claim 1, characterized in that: The magnetic ring (4) is circular.

7. The structure of a combined onboard Hall current sensor according to claim 1, characterized in that: The rubber ring (5) is circular.

8. The structure of a combined onboard Hall current sensor according to claim 2, characterized in that: The cover plate (7) has a certain elasticity.

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