Shell assembly for mounting magnetic core and Hall current sensor

Abstract

The utility model brings forward a housing assembly used for installing magnetic cores and a Hall current sensor, the housing assembly comprises a housing and two symmetrically arranged magnetic cores, at least three positioning parts are arranged in the housing at intervals, when the two magnetic cores respectively abut against any two positioning parts, an interval for forming an air gap is arranged between the two magnetic cores, and the two positioning parts are arranged at intervals. The magnetic core abuts against different positioning parts, so that the air gaps are different in size. By adopting the magnetic core mounting structure, the size of an air gap between the magnetic cores can be accurately controlled, so that the Hall element is positioned in a stable and optimized magnetic field environment, the change of a magnetic field can be induced more accurately, and the measurement accuracy of the current sensor is improved; the magnetic field can be guided to be more uniformly distributed in the air gap, the magnetic field can be sensed more comprehensively, the measurement error is reduced, and the measurement precision is further improved; stable supporting and fixing are provided for the Hall element and the magnetic core, and displacement and deformation caused by external factors such as vibration and impact are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensors, and in particular relates to a shell component for installing a magnetic core and a Hall current sensor. Background Art

[0002] The operating principle of a Hall effect current sensor is based on the Hall effect, in which the size of the core air gap directly affects the sensor's sensitivity to changes in the magnetic field, and thus its current measurement range. Specifically, the size of the core air gap determines the magnetic field strength that the Hall element can sense. The larger the air gap, the weaker the magnetic field strength that the Hall element can sense, and vice versa. Therefore, when the core air gap is large, the current range that the Hall effect current sensor can detect is relatively small; when the core air gap is small, the current range that the sensor can detect is relatively large. This is because a smaller air gap allows a stronger magnetic field to be concentrated near the Hall effect element, allowing the sensor to more accurately measure smaller current changes.

[0003] In practical applications, selecting the appropriate core air gap size is crucial to ensuring the performance of Hall effect current sensors. If the air gap is too large, the sensor may not be able to accurately measure small current changes, while if the air gap is too small, the sensor may overload and be unable to handle larger currents. Therefore, properly selecting the core air gap size based on the specific application scenario and the current range to be measured is key to ensuring the performance of Hall effect current sensors.

[0004] In related art, the air gap between two symmetrically arranged magnetic cores is typically controlled by the width of the air gap member. Specifically, the air gap member is clamped between the two cores. To manufacture Hall current sensors with different measurement ranges, air gap members of varying widths must be produced, increasing manufacturing costs. Furthermore, installing the air gap member increases the number of assembly steps. Utility Model Content

[0005] Aiming at the technical problem that the air gap between two symmetrically arranged magnetic cores is controlled by the width of the air gap in the prior art, and the air gap increases the manufacturing cost and assembly process, the utility model proposes a shell assembly for mounting the magnetic core and a Hall current sensor.

[0006] In the first aspect, the utility model proposes a shell assembly for installing a magnetic core, comprising a shell and two symmetrically arranged magnetic cores, wherein at least three positioning parts are arranged at intervals in the shell, and when the two magnetic cores are respectively abutted against any two of the positioning parts, an air gap is formed between the two magnetic cores, and the size of the air gap is different when the magnetic cores abut against different positioning parts.

[0007] By adopting the above technical solution, the shell assembly for mounting the magnetic core does not require additional air gap components, which has the following advantages: First, the size of the air gap can be precisely controlled. The setting of the positioning portion makes it possible to precisely adjust the distance between the two magnetic cores according to different application requirements to obtain air gaps of different sizes. This is very critical for applications that require precise control of magnetic field characteristics or the realization of specific electromagnetic properties. Secondly, the stability of the mounting structure is improved. The symmetrically arranged magnetic cores and multi-directional positioning portions can reduce changes in the position of the magnetic cores caused by external forces or other factors, thereby improving the reliability of the entire mounting structure. Finally, it is easy to install. No additional air gap components are required, which reduces the production cost and assembly process of producing air gap components.

[0008] Preferably, a retaining rib serving as the positioning portion is provided in the shell, and the retaining rib is a raised structure in the shell.

[0009] This technical solution provides a clear reference for the installation position of the magnetic core and other components. This allows for quick and accurate placement of components during Hall effect current sensor assembly, improving production efficiency and assembly precision. This ensures the stability of the air gap and, in conjunction with the housing, enhances the overall structural strength, reducing the risk of deformation and damage due to external forces.

[0010] Further preferably, there are at least four retaining ribs; the retaining ribs are arranged in pairs to form at least two pairs of retaining ribs, and each pair of retaining ribs includes two symmetrically arranged retaining ribs.

[0011] By adopting the above technical solution, by setting at least four ribs and arranging them symmetrically in pairs, significant advantages are achieved in terms of positioning accuracy, structural strength, assembly process and adaptability, providing a strong guarantee for the performance improvement and reliable operation of the Hall current sensor.

[0012] Further preferably, two inner walls of the shell in the arrangement direction of at least three positioning portions are symmetrically arranged relative to a symmetry plane; and the two ribs in each pair of ribs are symmetrically arranged relative to the symmetry plane.

[0013] By adopting the above technical solution, the symmetrical design of the housing and the ribs brings many advantages to the Hall current sensor, including enhanced symmetry and stability, optimized magnetic field distribution, easier manufacturing and assembly, and improved product reliability and maintainability.

[0014] Further preferably, the side facing each other of the two magnetic cores is the inner side, and the two sides opposite to each other of the two magnetic cores are the two outer sides; in at least two pairs of the ribs, there is at least one pair of the ribs in which both ribs are located on the inner side, and there is at least one pair of the ribs in which both ribs are located on the two outer sides respectively.

[0015] By adopting the above technical solution and setting the inner and outer ribs, the Hall current sensor is provided with all-round positioning and support, thereby enhancing the structural stability, optimizing the assembly process, and improving the adaptability and reliability of the product.

[0016] Preferably, some of the at least three positioning parts are first positioning parts, and the remaining positioning parts are second positioning parts; the inner wall of the shell serves as the first positioning part; a retaining rib serving as the second positioning part is provided in the shell; and the retaining rib is a raised structure in the shell.

[0017] By adopting the above technical solution, by using the inner wall of the shell as the first positioning part and the retaining ribs inside the shell as the second positioning part, the Hall current sensor is provided with comprehensive positioning advantages, enhanced structural stability, optimized assembly process and improved product adaptability.

[0018] Preferably, the positioning portion includes a first air gap component and a second air gap component. When the two magnetic cores abut against the first air gap component, the distance between the two magnetic cores is the first air gap; when the two magnetic cores abut against the second air gap component, the distance between the magnetic cores is the second air gap, and the width of the first air gap is smaller than that of the second air gap.

[0019] By adopting the above technical solution, by setting the first air gap component and the second air gap component, two different options are provided for the spacing between the magnetic cores. This enables the installation structure to adapt to more different application scenarios and needs. Different air gap sizes will affect the distribution and intensity of the magnetic field. By providing two air gap components, the magnetic field performance can be optimized according to specific application requirements, thereby improving the overall performance of the installation structure. The design in which the first air gap is smaller than the second air gap means that when different air gaps are used, the distribution of the magnetic field will change, which can meet the different requirements of different application scenarios for magnetic field characteristics. The choice of different air gap sizes increases the application range of the magnetic core installation structure and the Hall current sensor. It can be applied to more different types of equipment and systems, improving the versatility and market competitiveness of the product.

[0020] Further preferably, the width of the first air gap and the second air gap ranges from 2 to 10 mm.

[0021] By adopting the above technical solution, by setting the width range of the first air gap and the second air gap to 2 to 10 mm, it has significant advantages in accurately controlling magnetic field characteristics, improving sensor performance, facilitating manufacturing and installation, and adapting to different application scenarios.

[0022] Further preferably, the first air gap assembly includes a first convex plate and a second convex plate protruding from the bottom wall of the shell, and a gap is formed between the first convex plate and the second convex plate.

[0023] By adopting this technical solution, the first and second protruding plates protrude from the bottom wall of the housing, and the gap between them precisely controls the size of the first air gap. This design makes the air gap size more stable and predictable, improving the measurement accuracy of the current sensor. During installation, the first and second protruding plates serve as positioning and support components, making installation of the magnetic core more convenient and quick. Their presence ensures that the magnetic core is correctly placed in the desired position, improving installation efficiency and accuracy.

[0024] In the second aspect, the utility model also proposes a Hall current sensor, including a circuit board and a Hall element, and also includes a shell assembly for installing a magnetic core as described in the first aspect, the Hall element is arranged in the air gap, and the circuit board is electrically connected to the Hall element and the magnetic core.

[0025] By adopting the above technical solution and the magnetic core mounting structure as described in the first aspect, the size of the air gap between the magnetic cores can be precisely controlled. This places the Hall element in a stable and optimized magnetic field environment, enabling it to sense magnetic field changes more accurately, thereby improving the measurement accuracy of the current sensor. The design of the magnetic core mounting structure can guide the magnetic field to be more evenly distributed within the air gap, allowing the Hall element to sense the magnetic field more comprehensively, reducing measurement errors and further improving measurement accuracy. The magnetic core mounting structure provides stable support and fixation for the Hall element and the magnetic core, reducing displacement and deformation caused by external factors such as vibration and impact. This enables the Hall current sensor to maintain stable performance in various working environments and improves reliability. Since the air gap size can be adjusted and different air gap components can be selected according to specific needs, the sensor can meet the diverse needs of different users in terms of measurement accuracy, response speed, anti-interference ability, etc., and has a broader market application prospect.

[0026] Compared with the prior art, the beneficial results of the present invention are:

[0027] The shell assembly for mounting the magnetic core does not require additional air gap components and has the following advantages: First, the size of the air gap can be precisely controlled. The positioning portion allows the distance between the two magnetic cores to be precisely adjusted according to different application requirements to obtain air gaps of different sizes. This is critical for applications that require precise control of magnetic field characteristics or the realization of specific electromagnetic properties. Secondly, the stability of the mounting structure is improved. The symmetrically arranged magnetic cores and multi-directional positioning portions can reduce changes in the position of the magnetic cores due to external forces or other factors, thereby improving the reliability of the entire mounting structure. Finally, it is easy to install. No additional air gap components are required, which reduces the production cost and assembly process of producing air gap components. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate the embodiments and, together with the description, serve to explain the principles of the present invention. Other embodiments and many of the expected advantages of the embodiments will be readily apparent as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale with respect to each other. Like reference numerals designate corresponding similar parts.

[0029] Figure 1 FIG2 shows a schematic structural diagram of a housing assembly for mounting a magnetic core according to Example 1 of the present utility model;

[0030] Figure 2 Shows a schematic diagram of the overall structure of Example 1 according to the present utility model;

[0031] Figure 3 for Figure 2 A schematic cross-sectional view of section AA, wherein the two magnetic cores are adjusted to the first air gap state;

[0032] Figure 4 for Figure 2 A schematic cross-sectional view of section AA, wherein the two magnetic cores are adjusted to the second air gap state;

[0033] Figure 5 FIG2 shows a schematic structural diagram of a housing assembly for mounting a magnetic core according to Example 3 of the present utility model;

[0034] Figure 6 FIG2 shows a schematic diagram of the overall structure of a Hall current sensor according to Example 5 of the present utility model;

[0035] Figure 7 A schematic structural diagram of a magnetic core in a Hall current sensor according to embodiment 5 of the present utility model is shown.

[0036] The meaning of each number in the figure is: 1. Shell; 2. Magnetic core; 3. Positioning part; 31. First air gap component; 311. First protrusion plate; 312. Second protrusion plate; 313. Third protrusion plate; 32. Second air gap component; 4. Circuit board; 5. Hall element. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended only to illustrate the relevant utility model and are not intended to limit the scope of the utility model. It should also be noted that, for ease of description, only portions relevant to the relevant utility model are shown in the accompanying drawings.

[0038] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] Example 1:

[0040] In a first aspect, the present invention discloses a housing assembly for mounting a magnetic core, such as Figure 1 and Figure 2 As shown, the installation structure of the magnetic core includes a shell 1 and two symmetrically arranged magnetic cores 2. At least three positioning parts 3 are arranged at intervals in the shell 1. When the two magnetic cores 2 are respectively against any two positioning parts 3, there is a gap between the two magnetic cores 2 to form an air gap. The size of the air gap is different when the magnetic cores 2 are against different positioning parts 3.

[0041] The shell assembly for mounting the magnetic core does not require additional air gap components and has the following advantages: First, the size of the air gap can be precisely controlled. The setting of the positioning portion 3 makes it possible to precisely adjust the distance between the two magnetic cores 2 according to different application requirements to obtain air gaps of different sizes. This is critical for applications that require precise control of magnetic field characteristics or the realization of specific electromagnetic properties. Secondly, the stability of the mounting structure is improved. The symmetrically arranged magnetic cores 2 and the multi-directional positioning portions 3 can reduce the position changes of the magnetic cores 2 caused by external forces or other factors, thereby improving the reliability of the entire mounting structure. Finally, it is easy to install. No additional air gap components are required, which reduces the production cost and assembly process of producing air gap components.

[0042] Specifically, a retaining rib serving as the positioning portion 3 is provided in the housing 1. The retaining rib is a raised structure in the housing 1. There are at least four retaining ribs, which are arranged in pairs to form at least two pairs of retaining ribs, each pair of retaining ribs including two symmetrically arranged retaining ribs.

[0043] The rib design provides a clear reference for the installation position of the magnetic core 2 and other components. This allows for quick and accurate placement of components in the correct position during assembly of the Hall current sensor, improving production efficiency and assembly precision. This ensures the stability of the air gap and, in conjunction with the housing 1, enhances the strength of the entire structure and reduces the risk of deformation and damage due to external forces. By providing at least four ribs, arranged symmetrically in pairs, significant advantages are achieved in terms of positioning accuracy, structural strength, assembly process, and adaptability, providing a strong guarantee for the performance improvement and reliable operation of the Hall current sensor.

[0044] Furthermore, the two inner walls of the housing 1 in the arrangement direction of the at least three positioning portions 3 are symmetrically arranged relative to a symmetry plane; the two ribs in each pair of ribs are symmetrically arranged relative to the symmetry plane. The sides of the two magnetic cores 2 facing each other are referred to as the inner side, and the sides of the two magnetic cores 2 facing each other are referred to as the outer sides. Thus, in the at least two pairs of ribs, both ribs in at least one pair are located on the inner side, and both ribs in at least one pair are located on the outer sides.

[0045] The symmetrical design of the housing 1 and the ribs provides numerous advantages for the Hall effect current sensor, including enhanced symmetry and stability, optimized magnetic field distribution, ease of manufacturing and assembly, and improved product reliability and maintainability. The presence of internal and external ribs provides comprehensive positioning and support for the Hall effect current sensor, enhancing structural stability, streamlining the assembly process, and improving product adaptability and reliability.

[0046] In this embodiment, some of the at least three positioning portions 3 are first positioning portions, and the remaining positioning portions 3 are second positioning portions; the inner wall of the shell 1 serves as the first positioning portion; a retaining rib serving as the second positioning portion is provided inside the shell 1; the retaining rib is a raised structure inside the shell 1.

[0047] By using the inner wall of the shell 1 as the first positioning portion 3 and the retaining ribs inside the shell 1 as the second positioning portion, the Hall current sensor is provided with multiple benefits, including comprehensive positioning advantages, enhanced structural stability, optimized assembly process, and improved product adaptability.

[0048] Example 2:

[0049] like Figure 1 and Figure 2 As shown, the installation structure of the magnetic core 2 includes a shell 1 and two symmetrically arranged magnetic cores 2. At least two groups of positioning parts 3 are provided in the shell 1. The positioning parts 3 are respectively provided between the two magnetic cores 2 and at both ends. When the magnetic core 2 abuts against the positioning parts 3, at least an air gap of a required size is obtained between the two magnetic cores 2.

[0050] In this embodiment, the installation structure of the magnetic core 2 has the following advantages:

[0051] First, the air gap size can be precisely controlled. The positioning portion 3 allows for precise adjustment of the distance between the two cores 2 to achieve the desired air gap size, depending on the application requirements. This is crucial for applications requiring precise control of magnetic field characteristics or achieving specific electromagnetic performance.

[0052] Secondly, the stability of the mounting structure is improved. The symmetrically arranged magnetic core 2 and the multi-directional positioning parts 3 can reduce the position change of the magnetic core 2 caused by external forces or other factors, thereby improving the reliability of the entire mounting structure.

[0053] Finally, it is easy to install. No additional air gap parts are needed, which reduces the production cost and assembly process of the air gap parts.

[0054] Specific, combined Figure 3 and Figure 4 The positioning portion 3 is provided in two groups. The positioning portion 3 includes a first air gap component 31 and a second air gap component 32. When the two magnetic cores 2 abut against the first air gap component 31, the distance between the two magnetic cores 2 is the first air gap; when the two magnetic cores 2 abut against the second air gap component 32, the distance between the two magnetic cores 2 is the second air gap. The width of the first air gap is smaller than the second air gap.

[0055] By providing the first air gap component 31 and the second air gap component 32, two different spacing options are provided for the magnetic cores 2. This allows the mounting structure to adapt to a wider range of application scenarios and requirements. Different air gap sizes affect the distribution and intensity of the magnetic field. By providing two air gap components, the magnetic field performance can be optimized according to specific application requirements, improving the overall performance of the mounting structure.

[0056] Furthermore, the design of a smaller first air gap than the second air gap allows for variations in the magnetic field distribution when using different air gaps, meeting the varying magnetic field characteristics required in various application scenarios. The choice of different air gap sizes expands the application range of the core mounting structure and Hall effect current sensor, enabling its application in a wider range of devices and systems, enhancing the product's versatility and market competitiveness.

[0057] It should be noted that the magnetic core 2 and the housing 1 should be relatively fixed after installation, and an interference fit or other matching relationship between the magnetic core 2 and the housing 1 can be used for optimization design.

[0058] In this embodiment, the width of the first air gap and the second air gap ranges from 2 mm to 10 mm.

[0059] By setting the width range of the first air gap and the second air gap to 2 to 10 mm, significant advantages are achieved in terms of precise control of magnetic field characteristics, improved sensor performance, ease of manufacturing and installation, and adaptability to different application scenarios.

[0060] It should be noted that when one of the magnetic cores 2 abuts the first air gap component 31 and the other magnetic core 2 abuts the second air gap component 32, the distance between the two magnetic cores 2 is the third air gap. The magnetic cores 2 are typically arranged symmetrically, so this special arrangement of the positional relationship between the two magnetic cores 2 is generally not used. However, this does not rule out the need for this special arrangement in certain special circumstances.

[0061] Further, refer to Figure 1As a preferred embodiment, two groups of first air gap components 31 are provided. Both groups of first air gap components 31 are located in the middle of the longitudinal direction of the housing 1 and are symmetrically arranged along the transverse axis of the housing 1. Correspondingly, two groups of second air gap components 32 are provided. Both groups of second air gap components 32 are symmetrically arranged along the longitudinal axis of the housing 1. That is, the first air gap components 31 are provided between the two magnetic cores 2, and are located in the middle of the housing 1; the second air gap components 32 are provided at both ends of the two magnetic cores 2, and are located on both sides of the housing 1.

[0062] By providing two sets of first air gap components 31, symmetrically positioned along the longitudinal axis of housing 1, air gap stability is enhanced, magnetic field distribution is optimized, installation and commissioning are facilitated, and product reliability is improved. By providing two sets of second air gap components 32, symmetrically positioned along the longitudinal axis of housing 1, structural stability is enhanced, magnetic field distribution is optimized, installation and commissioning are facilitated, and product reliability and maintainability are improved.

[0063] It should be noted that the specific setting position, length and height of the first air gap component 31 and the second air gap component 32 can be designed according to actual needs. As long as the air gap adjustment effect can be achieved, no specific limitation is made here.

[0064] Preferably, refer to Figure 3 and Figure 4 The first air gap component 31 includes a first protruding plate 311 and a second protruding plate 312 protruding from the bottom wall of the housing 1 , with a gap between the first protruding plate 311 and the second protruding plate 312 . The second air gap component 32 includes protruding plates protruding from both sides of the housing 1 .

[0065] In this embodiment, the first protrusion 311 and the second protrusion 312 are protruding from the bottom wall of the housing 1, and the gap between them can accurately control the size of the first air gap. This design makes the size of the air gap more stable and predictable, improving the measurement accuracy of the current sensor. If the size of the first air gap needs to be adjusted, it can be achieved by changing the spacing between the first protrusion 311 and the second protrusion 312. This provides flexibility for different application scenarios and can meet different magnetic field characteristics requirements. During the installation process, the first protrusion 311 and the second protrusion 312 can serve as positioning and support components, making the installation of the magnetic core 2 more convenient and quick. Their presence can ensure that the magnetic core 2 is correctly placed in the desired position, improving installation efficiency and accuracy.

[0066] It should be noted that the specific location, protruding height, thickness, etc. of the first and second protruding plates 311 and 312 can be designed according to actual needs. As long as the size of the air gap can be controlled and adjusted, no specific limitation is made here.

[0067] Example 3:

[0068] Different from Example 2, in this embodiment, Figure 5 As shown, the first air gap component 31 includes a third protruding plate 313 protruding from the bottom wall of the housing 1 , and the thickness of the third protruding plate 313 is consistent with the size of the air gap of the required size.

[0069] In this embodiment, the thickness of the third protrusion 313 is consistent with the desired air gap size, enabling very precise determination of the air gap size. This eliminates the need for complex adjustments during installation and use, ensuring an accurate air gap. This improves production efficiency and product consistency while simplifying the installation structure. If the third protrusion 313 becomes damaged during use or the air gap size needs to be adjusted, its simple structure allows for easy replacement. This improves product maintainability and reduces maintenance costs.

[0070] Likewise, the specific location and protruding height of the third protruding plate 313 can be designed based on actual needs and are not specifically limited here.

[0071] Example 4:

[0072] Preferably, in this embodiment, referring to Figure 1 and Figure 3 Two first and two second limiting ribs protrude from the bottom surface of the housing 1. The two first limiting ribs are located near the center of the housing 1, while the two second limiting ribs are located near the sides of the housing 1. When the two cores approach each other, they can respectively abut against the two first limiting ribs, resulting in a first air gap between the two cores. When the two cores move away from each other, they can respectively abut against the two second limiting ribs, resulting in a second air gap between the two cores. The first air gap is smaller than the second air gap. By abutting the magnetic core 2 against the two first limiting ribs or the two second limiting ribs, the distance between the two cores can be adjusted without the need for an air gap member.

[0073] Example 5:

[0074] In the second aspect, the present invention also discloses a Hall current sensor, such as Figure 5 and Figure 6 As shown, it includes a circuit board 4 and a Hall element 5, and also includes a housing assembly for mounting a magnetic core as in the first aspect. The Hall element 5 is arranged in the air gap, and the circuit board 4 is electrically connected to the Hall element 5 and the magnetic core 2.

[0075] In this embodiment, by adopting the magnetic core mounting structure of the first aspect, the size of the air gap between the magnetic cores 2 can be precisely controlled. This places the Hall element 5 in a stable and optimized magnetic field environment, enabling it to more accurately sense magnetic field changes, thereby improving the measurement accuracy of the current sensor.

[0076] The design of the magnetic core mounting structure can guide the magnetic field to be more evenly distributed in the air gap, so that the Hall element 5 can sense the magnetic field more comprehensively, reduce measurement errors, and further improve measurement accuracy.

[0077] The core mounting structure provides stable support and fixation for the Hall element 5 and the magnetic core 2, reducing displacement and deformation caused by external factors such as vibration and impact. This ensures that the Hall current sensor maintains stable performance in various operating environments, improving reliability.

[0078] In addition, since the air gap size can be adjusted and different air gap components can be selected according to specific needs, the sensor can meet the diverse needs of different users in terms of measurement accuracy, response speed, anti-interference ability, etc., and has a broader market application prospect.

[0079] While the above describes specific embodiments of the present invention, the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be readily conceived by a person skilled in the art within the technical scope disclosed herein are intended to be encompassed within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

[0080] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The word 'comprising' does not exclude the presence of elements or steps not listed in the claims. The word 'one' or 'an' preceding an element does not exclude the presence of multiple such elements. The simple fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used for improvement. Any reference symbols in the claims should not be interpreted as limiting the scope.

Claims

1. A housing assembly for mounting a magnetic core, comprising a housing and two symmetrically arranged magnetic cores, characterized in that: At least three positioning parts are arranged at intervals in the shell. When the two magnetic cores respectively abut against any two of the positioning parts, an air gap is formed between the two magnetic cores. The sizes of the air gaps are different when the magnetic cores abut against different positioning parts.

2. The housing assembly for mounting a magnetic core according to claim 1, wherein: A retaining rib serving as the positioning portion is provided in the shell, and the retaining rib is a raised structure in the shell.

3. The housing assembly for mounting a magnetic core according to claim 2, wherein: There are at least four retaining ribs; The retaining ribs are arranged in pairs to form at least two pairs of retaining ribs, and each pair of retaining ribs includes two symmetrically arranged retaining ribs.

4. The housing assembly for mounting a magnetic core according to claim 3, wherein: Two inner walls of the housing in the arrangement direction of at least three positioning portions are symmetrically arranged relative to a symmetry plane; The two retaining ribs in each pair of the retaining ribs are symmetrically arranged relative to the symmetry plane.

5. The housing assembly for mounting a magnetic core according to claim 3, wherein: The sides of the two magnetic cores facing each other are called inner sides, and the two sides of the two magnetic cores facing each other are called outer sides; In at least two pairs of the retaining ribs, both retaining ribs in at least one pair are located on the inner side, and in at least one pair of the retaining ribs, both retaining ribs are located on the outer sides, respectively.

6. The housing assembly for mounting a magnetic core according to claim 1, wherein: Some of the at least three positioning portions are first positioning portions, and the remaining positioning portions are second positioning portions; The inner wall of the housing serves as the first positioning portion; A retaining rib serving as the second positioning portion is provided in the shell; the retaining rib is a raised structure in the shell.

7. The housing assembly for mounting a magnetic core according to claim 1, wherein: The positioning portion includes a first air gap component and a second air gap component; When the two magnetic cores are in contact with the first air gap component, the distance between the two magnetic cores is the first air gap; When the two magnetic cores are in contact with the second air gap component, the distance between the magnetic cores is the second air gap, and the width of the first air gap is smaller than the second air gap.

8. The housing assembly for mounting a magnetic core according to claim 7, wherein: The width of the first air gap and the second air gap ranges from 2 mm to 10 mm.

9. The housing assembly for mounting a magnetic core according to claim 7, wherein: The first air gap component includes a first convex plate and a second convex plate protruding from the bottom wall of the housing, with a gap between the first convex plate and the second convex plate.

10. A Hall current sensor, comprising a circuit board and a Hall element, characterized in that: It also includes a housing assembly for mounting a magnetic core as described in any one of claims 1 to 9, wherein the Hall element is disposed in the air gap, and the circuit board is electrically connected to the Hall element and the magnetic core.

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