Sensing device

Abstract

The utility model relates to a sensing device. The sensing device comprises a sensor body, the sensor body is provided with a central channel, the central channel is used for penetrating through at least two conductive pieces, the surfaces of the two sides of the sensor body are each provided with at least two fixing parts in the axial direction of the central channel, and the fixing parts are used for fixing the conductive pieces. The protection piece comprises two protection single bodies, the two protection single bodies are assembled in a matched mode in the axial direction of the center channel so as to be assembled and fixed to the sensor body, at least two containing grooves are formed in the side, facing the sensor body, of each protection single body, every two adjacent containing grooves are formed in a spaced mode, and each containing groove is used for containing one conductive piece. Therefore, when the sensor device, the protection piece and the sensor body are in the matched assembly state, the protection piece wraps the conductive pieces, so that the protection piece more effectively protects the conductive pieces, and meanwhile, part of the structure of the protection piece is located between the two adjacent conductive pieces, so that the creepage distance between the two adjacent conductive pieces is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sensors, in particular to a sensor device. BACKGROUND

[0002] With the improvement of the integration of electronic devices, the sensor device is increasingly widely used in the fields of industrial control, automobile electronics, etc. For example, a fluxgate sensor is a device for accurately measuring a magnetic field by means of electromagnetic induction and magnetic saturation effect, and is mainly used for detecting weak direct current or low-frequency magnetic field. The working principle of the fluxgate sensor is to use a soft magnetic material (such as permalloy) with high magnetic permeability to make a core, and to pass an alternating current to the excitation coil to make the core enter a periodic saturation state. At this time, if there is an external magnetic field, the symmetry of the magnetization of the core will be broken, and the induction coil will output a signal with a second harmonic. By demodulating the signal, the strength and direction of the magnetic field can be calculated. The center channel of the sensor body is used to pass through the conductive part, so that when the fluxgate sensor is used for current measurement, the conductive part of the measured current passes through the center channel. According to Ampere's law, the current in the conductive part will generate a magnetic field around it, and the fluxgate sensor can indirectly calculate the current in the conductive part by detecting this magnetic field.

[0003] However, the conductive part is usually designed in an exposed manner. This structural design has significant safety hazards: the air gap between adjacent conductive parts lacks effective isolation structure, so that the actual creepage distance only depends on the physical distance between adjacent conductive parts. This easily leads to unintended arcing effect between adjacent conductive parts. And because the exposed area of the conductive part is too large, it increases the risk of instantaneous contact discharge with surrounding metal parts. These problems seriously restrict the use reliability of the sensor and bring potential safety accident risks. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a sensor device in view of the above problems.

[0005] A sensor device comprises:

[0006] A sensor body, the sensor body is provided with a center channel, the center channel is used to pass through at least two conductive parts, along the axial direction of the center channel, the surfaces on both sides of the sensor body are provided with at least two fixing parts, the fixing parts are used to fix the conductive parts;

[0007] A protective part, the protective part comprises two protective monomers, the two protective monomers are assembled along the axial direction of the center channel to be assembled and fixed to the sensor body, each protective monomer is provided with at least two accommodating grooves on the side facing the sensor body, the two adjacent accommodating grooves are arranged at intervals, and each accommodating groove is used to accommodate one conductive part.

[0008] In one embodiment, at least a portion of the receiving groove is configured as a first snap-fit ​​area for snapping and fixing the conductive element.

[0009] In one embodiment, a portion of the receiving groove is configured as a second snap-fit ​​area, which is adapted to snap-fit ​​with the fixing part, so that the fixing part snaps into the second snap-fit ​​area.

[0010] In one embodiment, the protective monomer is further provided with at least one spacer groove, which is disposed between two adjacent receiving grooves.

[0011] In one embodiment, the groove surface of the spacer groove is provided with at least one spacing structure, which is constructed as a groove or a protrusion.

[0012] In one embodiment, the protective unit includes a protective body and a plug-in portion. The plug-in portion is fixedly connected to the protective body. The protective body is provided with a receiving groove, and the outer contour of the plug-in portion is adapted to the central channel so that when the plug-in portion extends into the central channel, the plug-in portion abuts against the inner peripheral wall of the central channel.

[0013] Furthermore, along the arrangement direction of two adjacent receiving grooves, part of the plug portion is located between two adjacent receiving grooves, so that the plug portion is used to block between two adjacent conductive parts.

[0014] In one embodiment, the protective unit is provided with heat dissipation holes.

[0015] In one embodiment, the sensor body includes a housing and a detection body;

[0016] An assembly space is formed inside the housing, and the detection body is assembled in the assembly space;

[0017] The detection body includes a magnetic sensor, which includes a mounting bracket, a sensing component, and an electrical connection post. The mounting bracket is provided with an annular groove for accommodating the sensing component. The electrical connection post is mounted on the mounting bracket, wherein the coil of the sensing component is connected to the electrical connection post.

[0018] The testing body also includes a circuit board with soldering holes for accommodating electrical connection posts. The electrical connection posts are soldered and fixed in the soldering holes, so that the electrical connection posts are electrically connected to the circuit board.

[0019] In one embodiment, the mounting bracket includes a bracket body and an abutment portion. The bracket body has an annular groove, and an electrical connection post is mounted on the bracket body. The abutment portion protrudes from one end of the bracket body, and the extension direction of the abutment portion is parallel to the extension direction of the electrical connection post. The abutment portion is adapted to abut and limit contact with the circuit board.

[0020] In one embodiment, the sensor body further includes two shielding plates, both of which are disposed within the assembly space and along the axial direction of the central channel, with the sensor body sandwiched between the two shielding plates.

[0021] The mounting bracket is also provided with a support part. The support part and the abutment part are both located at the same end of the bracket body, and the extension direction of the support part is parallel to the extension direction of the abutment part. The circuit board is provided with clearance holes so that the support part is suitable for abutting and limiting the shielding sheet away from the circuit board.

[0022] The aforementioned sensor is equipped with a protective component. Each protective unit in the protective component has at least two receiving grooves, each of which is configured to accommodate a conductive component. When the protective component and the sensor body are in a mating assembly state, the protective component covers the conductive component, thereby providing more effective protection for the conductive component. At the same time, part of the structure of the protective component is located between two adjacent conductive components to increase the creepage distance between the two adjacent conductive components. Attached Figure Description

[0023] Figure 1 This is a perspective view of a sensor device according to an embodiment of this application.

[0024] Figure 2 This is an exploded view of a sensor device according to an embodiment of this application.

[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0026] Figure 4 This is a schematic diagram of the assembly of the protective unit and the conductive component according to an embodiment of this application.

[0027] Figure 5 for Figure 4 Enlarged view of section B in the middle.

[0028] Figure 6 This is an exploded view of a sensor body according to an embodiment of this application.

[0029] Figure 7 This is a perspective view of a detection body according to an embodiment of this application.

[0030] Figure 8 This is a perspective view of a magnetic sensing element according to an embodiment of this application.

[0031] Figure label:

[0032] 100. Sensor component; 1. Sensor body; 10. Central channel; 11. Housing; 110. Fixing part; 111. Protrusion; 11a. First housing; 11b. Second housing; 12. Detection body; 121. Magnetic component; 1211. Mounting bracket; 12110. Annular groove; 1211a. Bracket body; 1211b. Abutment part; 1211c. Support part; 1212. Sensing assembly; 1213. Electrical connection post; 122. Circuit board; 122a. Welding hole; 122b. Clearance hole; 13. Shielding sheet; 2. Protective component; 20. Protective unit; 21. Protective main body; 22. Plug-in part; 22a. First plug-in body; 22b. Second plug-in body; 23. Heat dissipation hole; 20a. Receiving groove; 20b. Spacing groove; 20c. Spacing extension structure; 200. Conductive component. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0039] According to some embodiments of this application, a sensor 100 includes a sensor body 1 and a protective element 2. The sensor body 1 has a central channel 10 for at least two conductive elements 200 to pass through. Along the axial direction of the central channel 10, at least two fixing portions 110 are provided on both sides of the sensor body 1 for fixing the conductive elements 200. The protective element 2 includes two protective units 20, which are fitted and fixed to the sensor body 1 along the axial direction of the central channel 10. Each protective unit 20 has at least two receiving grooves 20a on the side facing the sensor body 1, with adjacent receiving grooves 20a spaced apart. Each receiving groove 20a is used to receive one conductive element 200. Each protective unit 20 in the protective component 2 is provided with at least two receiving grooves 20a, wherein each receiving groove 20a is configured to receive a conductive component 200, so that when the protective component 2 and the sensor body 1 are in a mating assembly state, the protective component 2 covers the part of the conductive component 200 that is not used to connect with other components, so that the protective component 2 provides more effective protection for the conductive component 200. At the same time, part of the structure of the protective component 2 is located between two adjacent conductive components 200 to increase the creepage distance between the two adjacent conductive components 200.

[0040] For example, see Figure 1 and Figure 2 As shown, in one embodiment of this application, the central channel 10 of the sensor 100 is used to pass through two conductive elements 200, thus enabling the sensor 100 to be used as a fluxgate sensor. It should be understood that a fluxgate sensor is a device that accurately measures magnetic fields using electromagnetic induction and magnetic saturation effects, primarily used to detect weak DC or low-frequency magnetic fields. The working principle of a fluxgate sensor is as follows: a core is made of a soft magnetic material with high permeability (e.g., permalloy), and an alternating current is passed through the excitation coil, causing the core to enter a periodic saturation state. At this time, if an external magnetic field exists, the magnetization symmetry of the core will be broken, and the induction coil will output a signal with a second harmonic. By demodulating this signal, the strength and direction of the magnetic field can be calculated. The central channel 10 of the sensor body 1 is used to pass through the conductive elements 200, so that when the fluxgate sensor is used for current measurement, the conductive element 200 of the current being measured will pass through the central channel 10. According to Ampere's law, the current in the conductive element 200 will generate a magnetic field around it. By detecting this magnetic field, the fluxgate sensor can indirectly calculate the magnitude of the current in the conductive element 200.

[0041] like Figure 2 As shown, along the axial direction of the central channel 10, two fixing parts 110 are provided on both sides of the sensor body 1. Each fixing part 110 on one side of the sensor body 1 is used to fix a conductive element 200. Figure 2As shown, the conductive element 200 is elongated and passes through the central channel 10, so that both sides of the sensor body 1 have a portion of the conductive element 200 structure along the axial direction of the central channel 10. Furthermore, the portion of the conductive element 200 exposed outside the central channel 10 is bent, giving the conductive element 200 an overall "U-shaped" form. Figure 2 As shown, two fixing parts 110 are provided on one side surface of the sensor body 1. The two fixing parts 110 are used to fix the two conductive parts 200 respectively, so as to achieve the effect of assembling and fixing the conductive parts 200 to the sensor body 1.

[0042] And refer to Figure 2 As shown, two fixing parts 110 are arranged at intervals on the same side of the sensor body 1. This makes the two conductive parts 200 fixed by the two fixing parts 110 in an intermittent state, which not only avoids contact between the two conductive parts 200, but also makes a certain creepage distance between the two adjacent conductive parts 200.

[0043] like Figure 2 As shown, in this embodiment, each fixing part 110 may include two protrusions 111, which are spaced apart to form a slot. The slot is used to engage the conductive element 200, thereby achieving the effect of engaging and fixing the conductive element 200 to the sensor body 1. It should be noted that in this embodiment, the fixing part 110 is composed of two protrusions 111, and the two protrusions 111 are spaced apart to form a slot. However, this application is not limited to this. The fixing part 110 may also have other configurations. For example, the fixing part 110 may be a slot directly formed on the surface of the sensor body 1. That is, when the conductive element 200 is assembled with the sensor body 1, part of the structure of the conductive element 200 is embedded in the slot of the sensor body 1, thereby achieving the effect of assembling and fixing the conductive element 200 with the sensor body 1.

[0044] Combination Figure 1 and Figure 2 As shown, the protective component 2 is detachably assembled to the sensor body 1. The protective component 2 may include two protective units 20. During the assembly and disassembly of the two protective units 20 to the sensor body 1, the two protective units 20 engage axially along the central channel 10, allowing for a mating assembly. Simultaneously, the sensor body 1 is clamped and fixed between the two protective units 20, thus achieving the effect of assembly and mating between the sensor body 1 and the protective component 2. Furthermore, when the two protective units 20 separate axially along the central channel 10, the protective component 2 is detached from the sensor body 1.

[0045] For example Figure 2As shown, the two protective units 20 are fixedly connected by snap-fit, and when the two protective units 20 are fixedly connected, they together clamp the sensor body 1. However, this application is not limited to the fixed connection between the protective units 20 by snap-fit; for example, the two protective units 20 can also be glued to the sensor body 1, so that the protective units 20 can at least meet the requirement of protecting the conductive component 200.

[0046] Combination Figures 1 to 3 As shown, each protective unit 20 has two receiving grooves 20a on the side facing the sensor body 1. Because the protective unit 20 has receiving grooves 20a on the side facing the sensor body 1, when the protective component 2 is assembled with the sensor body 1, the protective unit 20 covers the portion of the conductive component 200 exposed in the central channel 10. This provides more effective protection for the portion of the conductive component 200 exposed in the central channel 10, preventing it from being exposed. This not only avoids the risk of damage to this part from external factors but also prevents the conductive component 200 from being affected by electrical influences from other electrical components due to exposed areas, such as electrostatic discharge between the conductive component 200 and other electrical components. Furthermore, since two adjacent receiving grooves 20a are spaced apart, each receiving groove 20a is used to accommodate one conductive element 200, that is, the conductive element 200 is located inside the protective unit 20, so that the two conductive elements 200 located in the two receiving grooves 20a are spaced apart, thereby increasing the creepage distance between the two conductive elements 200.

[0047] Therefore, the sensor 100 according to this application is provided with a protective member 2. Each protective unit 20 in the protective member 2 is provided with at least two receiving grooves 20a, wherein each receiving groove 20a is configured to receive a conductive member 200. When the protective member 2 and the sensor body 1 are in a mating assembly state, the protective member 2 covers the part of the conductive member 200 that is not used to connect with other components, so that the protective member 2 provides more effective protection for the conductive member 200. At the same time, part of the structure of the protective member 2 is located between two adjacent conductive members 200 to increase the creepage distance between the two adjacent conductive members 200.

[0048] It should be added that, such as Figure 2As shown, in one embodiment of this application, the sensor 100 is equipped with two conductive elements 200, and these two conductive elements 200 pass through the central channel 10 of the sensor body 1, so that the sensor 100 can be used as a fluxgate sensor. However, this application is not limited to this. In other embodiments of this application, for example, the sensor 100 is equipped with three or four conductive elements 200, so that the sensor 100 can be used as a zero-sequence current transformer. Based on this, the number of receiving grooves 20a provided in the protection unit 20 can be specifically set according to the number of conductive elements 200 provided in the sensor 100.

[0049] In some embodiments of this application, at least a portion of the receiving groove 20a is configured as a first snap-fit ​​area. This first snap-fit ​​area is used to snap-fit ​​and fix the conductive element 200, allowing the conductive element 200 to be snap-fitted and fixed within the receiving groove 20a. This establishes a snap-fit ​​and fixed assembly relationship between the conductive element 200 and the protective unit 20. Thus, the conductive element 200 can be fixedly engaged with the fixing part 110 disposed on the sensor body 1, achieving the effect of assembling and fixing the conductive element 200 to the sensor body 1. Alternatively, the conductive element 200 can snap-fit ​​with the first snap-fit ​​area of ​​the receiving groove 20a, achieving the effect of assembling and fixing the conductive element 200 to the protective unit 2. Alternatively, the conductive element 200 can be fixedly engaged with both the fixing part 110 disposed on the sensor body 1 and the first snap-fit ​​area of ​​the receiving groove 20a, achieving a fixed connection between the conductive element 200, the sensor body 1, and the protective unit 2, thereby giving the conductive element 200 high assembly stability.

[0050] It is also worth noting that, in one embodiment of this application, the fixing part 110 provided on the surface of the sensor body 1 is used to assemble and fix a conductive element 200 of one size, and the first snap-fit ​​area of ​​the protective unit 20 is used to assemble and fix a conductive element 200 of another size. This makes the sensor 100 applicable to assembling conductive elements 200 of different sizes, improving the versatility of the sensor 100. Furthermore, when the conductive element 200 is assembled with the sensor 100, the protective member 2 provides more effective protection for the conductive element 200, and also increases the creepage distance between two adjacent conductive elements 200.

[0051] For example, such as Figure 2 and Figure 3As shown, taking a circular cross-sectional shape for the conductive element 200 as an example, the fixing part 110 provided on the surface of the sensor body 1 is suitable for assembling and fixing a conductive element 200 with a diameter of 5 mm, and the first snap-fit ​​area of ​​the protective unit 20 is suitable for snap-fitting and fixing a conductive element 200 with a diameter of 10 mm. When the sensor element 100 needs to be equipped with a conductive element 200 with a diameter of 5 mm, the conductive element 200 is assembled with the fixing part 110 provided on the surface of the sensor body 1; when the sensor element 100 needs to be equipped with a conductive element 200 with a diameter of 10 mm, the conductive element 200 is assembled with the first snap-fit ​​area provided on the protective unit 20. This allows the sensor element 100 to be used for assembling conductive elements 200 of different sizes, improving the versatility of the sensor element 100. It should be understood that the first snap-fit ​​area is a part of the receiving groove 20a, that is, the configuration of the first snap-fit ​​area is a slot structure located in the receiving groove 20a, so that the first snap-fit ​​area is suitable for snap-fit ​​with the conductive element 200, so as to achieve the effect of snap-fit ​​fixing the conductive element 200 in the receiving groove 20a.

[0052] It should be further noted that in the above embodiments, the example given is that both the fixing part 110 and the first snap-fit ​​area are adapted to the conductive element 200 with a circular cross-section, the only difference being the size of the conductive element 200. However, this application is not limited to this. In other embodiments of this application, for example, the fixing part 110 and the first snap-fit ​​area can also be used to snap-fit ​​and fix conductive elements 200 with different cross-sectional shapes. For example, the fixing part 110 is suitable for assembling with the conductive element 200 with a polygonal cross-sectional shape, and the first snap-fit ​​area is suitable for assembling with the conductive element 200 with a circular cross-sectional shape, and vice versa.

[0053] In summary, according to the sensor 100 of this application, the sensor body 1 is provided with a fixing part 110 and a receiving groove 20a is provided with a first snap-fit ​​area, so that the sensor 100 can be adapted to a variety of conductive parts 200, thereby improving the versatility of the sensor 100.

[0054] In some embodiments of this application, a portion of the receiving groove 20a is configured as a second snap-fit ​​area, which is adapted to snap-fit ​​with the fixing part 110, so that the fixing part 110 is snapped into the second snap-fit ​​area, thereby enhancing the connection stability between the protective member 2 and the sensor body 1.

[0055] For example, such as Figure 2As shown, in one embodiment of this application, each fixing part 110 consists of two protrusions 111, which are disposed on the surface of the sensor body 1, i.e., the fixing part 110 protrudes from the surface of the sensor body 1. The second snap-fit ​​area is a portion of the receiving groove 20a, i.e., the configuration of the second snap-fit ​​area is a slot structure located within the receiving groove 20a, so that the second snap-fit ​​area is suitable for snap-fitting with the fixing part 110. Thus, when the protective member 2 and the sensor body 1 are in the assembled state, the fixing part 110 snaps into the second snap-fit ​​area of ​​the receiving groove 20a, achieving the effect of snap-fitting between the protective member 20 and the sensor body 1.

[0056] In one embodiment of this application, the receiving groove 20a is provided with both a first engaging region and a second engaging region. When the first engaging region engages with the conductive element 200, the fixing part 110 engages with the second engaging region. This not only avoids redundant fixing of the fixing part 110 when the conductive element 200 is fixedly assembled to the protective element 2, but also enhances the assembly stability between the protective element 2 and the sensor body 1 by engaging the fixing part 110 with the second engaging region, reducing the risk of separation between the protective element 2 and the sensor body 1. This ensures that the protective element 2 can provide long-term and effective protection for the conductive element 200 during the long-term use of the sensor element 100.

[0057] In some embodiments of this application, the protective unit 20 is further provided with at least one spacer groove 20b, which is disposed between two adjacent receiving grooves 20a, so as to further increase the creepage distance between two adjacent conductive elements 200.

[0058] For example, see Figure 2 and Figure 3 As shown, in one embodiment of this application, a spacer groove 20b is provided between two adjacent receiving grooves 20a to increase the surface distance between two adjacent spacer grooves 20b, thereby increasing the creepage distance between two adjacent conductive elements 200. It should be further explained that, while this embodiment uses one spacer groove 20b between two adjacent receiving grooves 20a as an example, this application is not limited to this. Two or three equal numbers of spacer grooves 20b can also be provided between two adjacent receiving grooves 20a to achieve the effect of increasing the creepage distance between two adjacent conductive elements 200.

[0059] In some embodiments of this application, the groove surface of the spacer groove 20b is provided with at least one spacing-increasing structure 20c. The spacing-increasing structure 20c is constructed as a groove or a protrusion, thereby further increasing the creepage distance between two adjacent conductive elements 200. For example, see [reference needed]. Figure 2 and Figure 3As shown, in one embodiment of this application, the groove surface of the spacer groove 20b is provided with a plurality of spacing structures 20c, wherein each spacing structure 20c is constructed as a groove. However, this application is not limited thereto; in other embodiments of this application, the spacing structure 20c may also be constructed as a protrusion.

[0060] In some embodiments of this application, the protective unit 20 includes a protective body portion 21 and a plug portion 22. The plug portion 22 is fixedly connected to the protective body portion 21. The protective body portion 21 is provided with a receiving groove 20a, and the outer contour of the plug portion 22 is adapted to the central channel 10 so that when the plug portion 22 extends into the central channel 10, the plug portion 22 abuts against the inner peripheral wall of the central channel 10. Furthermore, along the arrangement direction of two adjacent receiving grooves 20a, a portion of the structure of the plug portion 22 is located between two adjacent receiving grooves 20a, so that the plug portion 22 is used to block between two adjacent conductive elements 200.

[0061] For example, see Figures 2 to 5 As shown, in one embodiment of this application, the protective body 21 is provided with two receiving grooves 20a, and the plug-in part 22 is provided on the side of the protective body 21 where the receiving grooves 20a are provided. During the assembly process of the protective unit 20 and the sensor body 1, when the plug-in part 22 extends into the central channel 10, the open area of ​​the receiving groove 20a faces the sensor body 1, so that the conductive member 200 passing through the central channel 10 is assembled in the receiving groove 20a, so that the protective member 2 covers part of the conductive member 200, so that the protective member 2 provides more effective protection for the conductive member 200. At the same time, part of the structure of the protective member 2 is located between two adjacent conductive members 200 to increase the creepage distance between the two adjacent conductive members 200.

[0062] Since the outer contour of the plug-in part 22 is suitable for abutting against the inner peripheral wall of the central channel 10, the central channel 10 limits the plug-in part 22 in the radial direction of the central channel 10. That is, the sensor body 1 limits the protective unit 20 in the radial direction of the central channel 10. Not only does it limit the relative positional relationship between the protective unit 20 and the sensor body 1 when they are assembled, but the central channel 10 also guides the protective unit 20 during the assembly process, reducing the assembly difficulty.

[0063] Referring to Figure 5, in this embodiment, the plug-in portion 22 includes a first plug-in body 22a and a second plug-in body 22b. The first plug-in body 22a and the second plug-in body 22b are combined to form a plug-in portion 22 with a circular outer contour, so that the outer contour of the plug-in portion 22 is adapted to the central channel 10. Along the arrangement direction of the two receiving grooves 20a, a portion of the structure of the second plug-in body 22b is located between the two receiving grooves 20a. Thus, when the two conductive elements 200 are respectively located in the two receiving grooves 20a, the second plug-in body 22b acts as a barrier between the two conductive elements 200 located in the two receiving grooves 20a, preventing direct contact between the two conductive elements 200.

[0064] In some embodiments of this application, the protective unit 20 is provided with heat dissipation holes 23. For example, see [link to relevant documentation]. Figure 1 and Figure 2 As shown, the protective body 21 is provided with heat dissipation holes 23. These holes 23 are through-holes penetrating the protective body 21. When the protective unit 20 and the sensor body 1 are assembled, one end of the heat dissipation hole 23 communicates with the outer surface of the sensor body 1, allowing the heat dissipation hole 23 to transfer the heat generated by the sensor body 1 to the environment, thus achieving heat dissipation for the sensor body 1. Furthermore, one end of another heat dissipation hole 23 communicates with a receiving groove 20a provided in the protective body 21, allowing the heat generated by the conductive component 200 located in the receiving groove 20a to be transferred to the environment through the heat dissipation hole 23, thereby achieving heat dissipation for the conductive component 200.

[0065] In some embodiments of this application, the sensor body 1 includes a housing 11 and a detection body 12. An assembly space is formed within the housing 11 to accommodate the detection body 12, allowing the detection body 12 to be assembled within the assembly space. The detection body 12 includes a magnetic sensing element 121, which includes a mounting bracket 1211, a sensing component 1212, and an electrical connection post 1213. The mounting bracket 1211 is provided with an annular groove 12110 to accommodate the sensing component 1212, allowing the sensing component 1212 to be assembled and fixed to the mounting bracket 1211. The electrical connection post 1213 is assembled and fixed to the mounting bracket 1211, and the coil of the sensing component 1212 is connected to the electrical connection post 1213 to achieve an electrical connection between the sensing component 1212 and the electrical connection post 1213. The detection body 12 also includes a circuit board 122. The circuit board 122 is provided with a soldering hole 122a. The soldering hole 122a is used to accommodate an electrical connection post 1213. The electrical connection post 1213 is soldered and fixed in the soldering hole 122a, so that the electrical connection post 1213 is electrically connected to the circuit board 122.

[0066] For example, see Figures 6 to 8As shown, in one embodiment of this application, the housing 11 includes a first housing 11a and a second housing 11b. A groove structure is formed in the first housing 11a and a groove structure is formed in the second housing 11b. The first housing 11a and the second housing 11b are fastened together to form the housing 11, so that an assembly space is formed in the housing 11. The assembly space can be used to accommodate the detection body 12.

[0067] The detection body 12 includes a magnetic sensor 121 and a circuit board 122. During the assembly of the magnetic sensor 121 and the circuit board 122 to form the detection body 12, an electrical connection post 1213, fixedly mounted on a mounting bracket 1211, is aligned with a solder hole 122a on the circuit board 122. The electrical connection post 1213 is then moved into the solder hole 122a, for example, by soldering. This soldering method fixes the electrical connection post 1213 to the solder hole 122a, thus achieving an electrical connection between the electrical connection post 1213 and the circuit board 122. Since one end of the electrical connection post 1213 is fixedly connected to the mounting bracket 1211 along its extension direction (which can also be understood as the length direction of the electrical connection post 1213), and the other end is fixedly connected to the circuit board 122, this achieves a fixed assembly between the magnetic sensor 121 and the circuit board 122. It should be further explained that by providing soldering holes 122a on the circuit board 122 to accommodate the electrical connection posts 1213 of the magnetic sensor 121, the position of the magnetic sensor 121 and the circuit board 122 is facilitated during the fixed assembly process (ensuring that the electrical connection posts 1213 are inserted into the appropriate soldering holes 122a), thus reducing the assembly difficulty of the magnetic sensor 121 and the circuit board 122.

[0068] In some embodiments of this application, the mounting bracket 1211 includes a bracket body 1211a and an abutment portion 1211b. The bracket body 1211a forms an annular groove 12110, and an electrical connection post 1213 is assembled on the bracket body 1211a. The abutment portion 1211b protrudes from one end of the bracket body 1211a, and the extending direction of the abutment portion 1211b is parallel to the extending direction of the electrical connection post 1213. The abutment portion 1211b is adapted to abut and limit the circuit board 122.

[0069] For example, in combination Figure 7 and Figure 8 As shown, in one embodiment of this application, along the thickness direction of the support body 1211a (e.g.) Figure 7 and Figure 8As shown in the Z-direction, the abutment portion 1211b is disposed at the open end of the bracket body 1211a where the annular groove 12110 is formed, that is, in the thickness direction of the bracket body 1211a, the abutment portion 1211b protrudes from the open end of the bracket body 1211a where the annular groove 12110 is formed. Furthermore, when the electrical connection post 1213 is assembled with the bracket body 1211a, the extension direction of the electrical connection post 1213 is parallel to the extension direction of the abutment portion 1211b. Thus, during the assembly of the magnetic induction element 121 and the circuit board 122 (which can also be understood as: the process of the electrical connection post 1213 extending into the corresponding solder hole 122a), the abutment portion 1211b abuts and limits its contact with the circuit board 122. Therefore, in the thickness direction of the support body 1211a, the abutment portion 1211b restricts the relative positional relationship between the support body 1211a and the circuit board 122, so that a gap is formed between the support body 1211a and the circuit board 122. In this way, the heat generated by the sensing component 1212 disposed in the annular groove 12110 can be dissipated through this gap.

[0070] Furthermore, in this embodiment, the welding hole 122a is a through hole. Because the welding hole 122a is a through hole, the electrical connection post 1213 can completely pass through it. This makes it difficult to control the relative position of the electrical connection post 1213 and the circuit board 122 in the thickness direction of the support body 1211a. Since the abutment portion 1211b and the electrical connection post 1213 are both located on the same side of the support body 1211a, the abutment portion 1211b can restrict further movement of the circuit board 122 toward the support body 1211a during the assembly of the magnetic induction element 121 and the circuit board 122. This makes it easier to control the relative position of the electrical connection post 1213 and the circuit board 122 in the thickness direction of the support body 1211a, thereby improving the welding effect between the electrical connection post 1213 and the circuit board 122.

[0071] Furthermore, it should be noted that because the solder hole 122a is a through hole, during the process of soldering the magnetic component 121 and the circuit board 122 together, the operator can solder from the side of the circuit board 122 away from the magnetic component 121. Therefore, during the soldering process, the magnetic component 121 avoids obstructing the soldering equipment, facilitating the operator's soldering operation and improving soldering efficiency. Moreover, since there is no obstruction from the magnetic component 121, the size of the solder hole 122a can be set relatively small (just enough for the electrical connection post 1213 to extend into the solder hole 122a). Because the gap between the inner peripheral wall of the solder hole 122a and the outer peripheral wall of the electrical connection post 1213 is small, the amount of soldering consumables (such as the solder used for soldering) can be effectively reduced, lowering production costs.

[0072] In some embodiments of this application, the sensor body 1 further includes two shielding plates 13, both of which are disposed within the assembly space and along the axial direction of the central channel 10, with the detection body 12 sandwiched between the two shielding plates 13. The mounting bracket 1211 is also provided with a support portion 1211c, and the support portion 1211c and the abutment portion 1211b are both disposed at the same end of the bracket body 1211a, with the extension direction of the support portion 1211c being parallel to the extension direction of the abutment portion 1211b. The circuit board 122 is provided with a clearance hole 122b, so that the support portion 1211c is adapted to abut and limit the shielding plate 13 facing away from the circuit board 122, thereby improving the assembly stability of the magnetic sensing element 121.

[0073] For example, in combination Figure 7 and Figure 8 As shown, in one embodiment of this application, both the support portion 1211c and the abutment portion 1211b are disposed at the open end of the bracket body 1211a where the annular groove 12110 is formed, and the extending direction of the support portion 1211c is parallel to the extending direction of the abutment portion 1211b. The circuit board 122 is provided with a clearance hole 122b for avoiding the abutment portion 1211b, so that during the assembly process of the magnetic sensor 121 and the circuit board 122, the support portion 1211c can pass through the circuit board 122 to abut and limit the shielding sheet 13 facing away from the circuit board 122. Since the end face of the support portion 1211c that contacts the shielding sheet 13 is flat, the assembly stability of the magnetic sensor 121 can be improved. In addition, in the thickness direction of the bracket body 1211a (e.g., ... Figure 7 and Figure 8 In the Z-direction shown, the distance between the end of the support portion 1211c away from the bracket body 1211a and the end of the abutment portion 1211b away from the bracket body 1211a is D1, and the thickness of the circuit board 122 is D2, satisfying the relationship: D1≥D2. This avoids the problem that the support portion 1211c cannot abut against the shielding sheet 13 away from the circuit board 122 due to the excessive thickness of the circuit board 122. In one embodiment, D1>D2, thus preventing the surface of the circuit board 122 away from the bracket body 1211a from contacting the shielding sheet 13 abutted by the support portion 1211c, preventing the circuit board 122 from colliding with the shielding sheet 13, and protecting the circuit board 122.

[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A sensor device, characterized by The sensor body is provided with a central channel for passing at least two conductive pieces, and the surfaces on both sides of the sensor body along the axial direction of the central channel are provided with at least two fixing parts for fixing the conductive pieces. The protection member includes two protection units which are assembled along the axial direction of the central channel and are assembled and fixed to the sensor body, and each protection unit is provided with at least two accommodating grooves on one side of the sensor body, and adjacent two accommodating grooves are arranged at intervals, and each accommodating groove is used for accommodating one conductive piece. At least part of the accommodating grooves is arranged as a first clamping area for clamping and fixing the conductive pieces.

2. The sensor device according to claim 1, characterized in that Part of the accommodating grooves is arranged as a second clamping area which is suitable for clamping and matching with the fixing parts so that the fixing parts are clamped in the second clamping area.

3. The sensing device of claim 1, wherein, The protection unit is also provided with at least one spacing groove which is arranged between adjacent two accommodating grooves.

4. The sensing device of claim 1, wherein, The groove surface of the spacing groove is provided with at least one distance increasing structure which is configured as a groove or a protrusion.

5. The sensor device according to claim 4, characterized in that The protection unit includes a protection main part and a plug-in part which is fixedly connected with the protection main part, the protection main part is provided with the accommodating grooves, and the outer contour of the plug-in part is matched with the central channel so that the plug-in part is in abutting contact with the inner circumferential wall of the central channel when the plug-in part extends into the central channel.

6. The sensing device of claim 1, wherein, And along the arrangement direction of adjacent two accommodating grooves, part of the structure of the plug-in part is located between adjacent two accommodating grooves, so that the plug-in part is used for blocking between adjacent two conductive pieces. The protection unit is provided with heat dissipation holes.

7. The sensing device of claim 1, wherein, The sensor body includes a shell and a detection body; 8. The sensor device according to any one of claims 1 to 7, characterized in that The detection body is assembled in the assembly space; The detection body includes a magnetic sensing member which includes a mounting bracket, a sensing assembly and an electric connecting column, the mounting bracket is provided with an annular groove for accommodating the sensing assembly, and the electric connecting column is assembled in the mounting bracket, wherein the coil of the sensing assembly is connected with the electric connecting column; The detection body also includes a circuit board which is provided with a welding hole for accommodating the electric connecting column, and the electric connecting column is welded and fixed in the welding hole so that the electric connecting column is electrically connected with the circuit board. The mounting bracket includes a bracket body and an abutting part, the bracket body is formed with the annular groove, and the electric connecting column is assembled in the bracket body, the abutting part is protruded from one end of the bracket body, the extension direction of the abutting part is parallel to the extension direction of the electric connecting column, and the abutting part is suitable for abutting and limiting with the circuit board.

9. The sensor device according to claim 8, characterized in that The sensor body also includes two shielding sheets which are arranged in the assembly space and are clamped between the two shielding sheets along the axial direction of the central channel.

10. The sensor device according to claim 9, characterized in that ​ The mounting support is further provided with a supporting part, the supporting part and the abutting part are both arranged at the same end of the support body, the extending direction of the supporting part is parallel to the extending direction of the abutting part, the circuit board is provided with a avoiding hole, and the supporting part is adapted to abut against and limit the shielding sheet away from the circuit board.

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