Sensor

Abstract

The utility model relates to a sensor. The sensor comprises a sensor shell, a shielding cover, a magnetic induction assembly and a circuit connecting piece. Wherein the sensor shell is internally provided with an accommodating space, and the accommodating space is internally provided with a limiting part. A shielding space is arranged in the shielding cover, a communicating hole is further formed in the outer ring wall of the shielding cover and communicates with the shielding space, and when the shielding cover is assembled in the containing space, the limiting part is located in the communicating hole. The magnetic induction assembly is assembled in the shielding space, and an enameled wire of the magnetic induction assembly penetrates through the limiting part to extend out of the shielding space; the hardness of the limiting part is smaller than that of the shielding case. The circuit connecting piece is assembled in the containing space, and the wiring sections of the enameled wires are all connected with the circuit connecting piece. According to the sensor provided by the invention, the limiting part is arranged on the sensor shell, so that the protection layer of the enameled wire is prevented from being damaged to a certain extent, the rotation of the shielding cover can be limited, and the assembly stability of the shielding cover is improved.

Description

TECHNICAL FIELD

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

[0002] With the improvement of the integration of electronic devices, sensor devices are increasingly widely used in industrial control, automotive electronics and other fields. For example, a fluxgate sensor is a device that precisely measures 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 fields. The working principle of the fluxgate sensor is to use a soft magnetic material (such as a 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] The shielding cover of the sensor is usually made of silicon steel material, which realizes excellent anti-interference performance by using its high magnetic permeability. However, the silicon steel material has high hardness, so the shielding cover is easy to scratch and damage the protective layer of the enameled wire, affecting the use reliability of the sensor. CONTENT OF THE INVENTION

[0004] Therefore, it is necessary for the present application to provide a sensor in view of the above-mentioned technical problems.

[0005] A sensor comprises:

[0006] A sensor housing is provided with an accommodation space inside, and a limiting part is arranged in the accommodation space;

[0007] A shielding cover is provided with a shielding space inside, and a communication hole is further arranged on the outer ring wall of the shielding cover, which is in communication with the shielding space. When the shielding cover is assembled in the accommodation space, the limiting part is located in the communication hole;

[0008] A magnetic sensing assembly is assembled in the shielding space, and the enameled wire of the magnetic sensing assembly passes through the limiting part to extend out of the shielding space. The hardness of the limiting part is less than that of the shielding cover;

[0009] A circuit connecting piece is assembled in the accommodation space, and the wiring segments of the enameled wire are connected with the circuit connecting piece.

[0010] In one embodiment, the outer contour of the limiting part is adapted to abut against the hole wall of the communication hole.

[0011] In one of the embodiments, the limiting part comprises two limiting stoppers which are arranged at intervals to form a through gap.

[0012] In one of the embodiments, the circuit connecting piece comprises a circuit board and a pin piece, wherein the pin piece comprises a fixing plate and at least two pins, the pins are fixed to the fixing plate, and the fixing plate is fixedly connected to the circuit board.

[0013] The side of the circuit board away from the pin piece is provided with a avoiding gap for avoiding the shielding cover, and the edge of the avoiding gap is adapted to abut against the limiting part.

[0014] In one of the embodiments, the circuit connecting piece comprises a circuit board and a pin piece, wherein the pin piece comprises a fixing plate and at least two pins, the pins are fixed to the fixing plate, and the fixing plate is fixedly connected to the circuit board.

[0015] The sensor shell is further provided with a positioning support part in the accommodating space, wherein the positioning support part comprises a positioning body and at least one support body, the positioning body is positioned and matched with the positioning groove arranged on the fixing plate, and the support body is used for supporting the circuit board in the first direction.

[0016] In one of the embodiments, the sensor shell is further provided with at least one set of clamping and fixing assembly, the clamping and fixing assembly comprises a support pad and a buckle piece, the support pad and the buckle piece are arranged at intervals along the first direction to form a clamping space, and the clamping space is used for clamping the circuit connecting piece.

[0017] In one of the embodiments, the surface of the buckle piece away from the support pad extends obliquely towards the support pad along the first direction.

[0018] In one of the embodiments, the sensor shell comprises a shell base and a shell cover, the shell base is provided with an inner recessed accommodating groove, and the shell cover covers the opening of the accommodating groove to define the accommodating space.

[0019] The peripheral wall of the accommodating groove is provided with a clamping groove and / or a clamping protrusion, the shell cover is provided with a clamping protrusion and / or a clamping groove, and the clamping protrusion is clamped and matched with the clamping groove.

[0020] When the shell cover is assembled to the shell base, the shielding cover and / or the circuit connecting piece are clamped and fixed between the shell cover and the shell base along the first direction.

[0021] In one of the embodiments, the inner annular wall of the shielding cover is provided with a flow guide opening which is communicated with the shielding space.

[0022] The shell base is provided with a first stop ring, the first stop ring comprises a first stop ring layer and a second stop ring layer, along the first direction, the second stop ring layer is arranged at the end of the first stop ring layer close to the shell cover, and the outer contour size of the first stop ring layer is greater than the outer contour size of the second stop ring layer.

[0023] The first stop ring layer is adapted to abut against the inner annular wall of the shielding cover, and the second stop ring layer is spaced apart from the inner annular wall of the shielding cover, so that the flow guide opening is in communication with the accommodating space.

[0024] In one of the embodiments, an abutting portion of the first stop ring layer and the second stop ring layer is formed with a support platform;

[0025] The shell cover is provided with a second stop ring, which is adapted to abut against the support platform in the first direction.

[0026] The sensor described above, by providing a limiting portion in the sensor shell, can to some extent avoid damage to the protective layer of the enameled wire, while limiting the rotation of the shielding cover and improving the assembly stability of the shielding cover. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 FIG. 6 is a sectional view of a sensor according to an embodiment of the present application.

[0028] Figure 2 FIG. 7 is an assembly view of a shielding cover and a shell seat according to an embodiment of the present application.

[0029] Figure 3 FIG. 8 is a perspective view of a shell seat according to an embodiment of the present application.

[0030] Figure 4 FIG. 9 is an exploded view of a shielding cover and a magnetic sensing assembly (the enameled wire is not shown) according to an embodiment of the present application.

[0031] Figure 5 FIG. 10 is a perspective view of a pin according to an embodiment of the present application.

[0032] Figure 6 FIG. 11 is a perspective view of a shell cover according to an embodiment of the present application.

[0033] REFERENCE NUMERALS:

[0034] 100, sensor; 1, sensor housing; 1a, housing base; 1b, housing cover; 10, containing space; 11, limiting part; 111, limiting stop column; 110, through gap; 12, positioning support part; 121, positioning body; 122, support body; 13, clamping fixing assembly; 131, support pad block; 132, clamping piece; 141, clamping groove; 142, clamping protrusion; 15, first stop ring; 151, first stop ring layer; 152, second stop ring layer; 153, support table; 16, second stop ring; 2, shielding cover; 2a, first cover body; 2b, second cover body; 20a, shielding space; 20b, communication hole; 20c, flow guide opening; 3, magnetic sensing assembly; 31, magnetic piece; 32, magnetic piece protection shell; 32a, first shell; 32b, second shell; 4, circuit connecting piece; 41, circuit board; 410, avoidance gap; 42, pin piece; 421, fixed plate; 4210, positioning groove; 422, pin. DETAILED DESCRIPTION

[0035] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways other than those described herein without departing from the spirit of the present application, and those skilled in the art can make similar improvements without departing from the scope of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0036] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0037] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] See Figures 1 to 6 As shown, a sensor 100 according to some embodiments of this application includes a sensor housing 1, a shielding cover 2, a magnetic sensing component 3, and a circuit connector 4. The sensor housing 1 has a receiving space 10 and a limiting part 11, with the limiting part 11 located within the receiving space 10. The shielding cover 2 has a shielding space 20a, and its outer ring wall has a communicating hole 20b communicating with the shielding space 20a. When the shielding cover 2 is assembled within the receiving space 10, the limiting part 11 is located within the communicating hole 20b, and the limiting part 11 abuts against the wall of the communicating hole 20b for limitation. The magnetic sensing component 3 is assembled within the shielding space 20a, and the enameled wire of the magnetic sensing component 3 passes through the limiting part 11 to extend out of the shielding space 20a. The hardness of the limiting part 11 is less than the hardness of the shielding cover 2. The circuit connector 4 is assembled within the receiving space 10, and all the connecting segments of the enameled wire are connected to the circuit connector 4.

[0042] For example, in combinationFigures 1 to 3 As shown, in one embodiment of this application, the sensor housing 1 may include a housing base 1a and a housing cover 1b, wherein along the thickness direction of the housing base 1a (which can also be understood as the thickness direction of the sensor housing 1, such as...) Figures 1 to 3 As shown in the Z direction, a recessed receiving groove is formed in the housing 1a from top to bottom, and the housing cover 1b is adapted to be assembled to the housing 1a along the thickness direction of the housing 1a, so that the housing cover 1b covers the opening of the receiving groove. Thus, when the housing cover 1b and the housing 1a are assembled to form the sensor housing 1, a receiving space 10 is formed inside the sensor housing 1. The receiving space 10 can be used to accommodate the shielding cover 2 and the circuit connector 4, so that the shielding cover 2 is assembled in the receiving space 10, and part of the structure of the circuit connector 4 is assembled in the receiving space 10.

[0043] Combination Figure 2 and Figure 4 As shown, the shielding cover 2 may include a first cover 2a and a second cover 2b. The first cover 2a has a groove inside, and the second cover 2b also has a groove inside. When the first cover 2a and the second cover 2b are assembled facing each other, the grooves formed in the first cover 2a and the second cover 2b together constitute a shielding space 20a. Furthermore, both the first cover 2a and the second cover 2b are provided with two notches. When the first cover 2a and the second cover 2b are assembled facing each other, one notch in the first cover 2a corresponds to one notch in the second cover 2b to form a connecting hole 20b, and the other notch in the first cover 2a corresponds to another notch in the second cover 2b to form another connecting hole 20b. Thus, the shielding cover 2 forms two connecting holes 20b that communicate with the shielding space 20a.

[0044] For example, the shielding cover 2 is composed of a first cover 2a and a second cover 2b. This allows the shielding space 20a to be opened when the first cover 2a and the second cover 2b are separated. The operator can first assemble the magnetic sensing component 3 into one of the first cover 2a and the second cover 2b, and then assemble the other cover 2a and the other cover 2b, thereby achieving the effect of assembling the magnetic sensing component 3 within the shielding space 20a.

[0045] The magnetic induction assembly 3 includes a magnetic element 31 and two enameled wires (not shown in the figure), which can be a first enameled wire and a second enameled wire, respectively. The magnetic element 31 is ring-shaped, and both the first and second enameled wires are wound around it. When the magnetic induction assembly 3 is assembled within the shielding space 20a, the magnetic element 31 is completely located within the shielding space 20a. Along the length direction of the first enameled wire, the connecting segments at both ends of the first enameled wire extend out of the shielding space 20a through the connecting holes 20b; and along the length direction of the second enameled wire, the connecting segments at both ends of the second enameled wire extend out of the shielding space 20a through the connecting holes 20b.

[0046] For example, the magnetic sensing component 3 may also include a magnetic component protective shell 32. The magnetic component protective shell 32 may include a first shell 32a and a second shell 32b, with grooves formed inside the first shell 32a and the second shell 32b. When the first shell 32a and the second shell 32b are assembled facing each other, the grooves formed in the first shell 32a and the second shell 32b together constitute a protective space. The magnetic component 31 is assembled within this protective space, so that the magnetic component protective shell 32 protects the magnetic component 31 assembled inside. The first enameled wire and the second enameled wire are wound around the outside of the magnetic component protective shell 32, which is equivalent to the first enameled wire and the second enameled wire being wound around the outside of the magnetic component 31. It should also be noted that when the sensor 100 is in operation, the magnetic component 31 generates heat. Since the magnetic component protective shell 32 is located between the enameled wires of the magnetic component 31, it acts as a heat insulator, thereby reducing the risk of the enameled wires aging due to excessive temperature.

[0047] The connecting sections of the first and second enameled wires extend out of the shield 2 to connect with the circuit connector 4, thereby enabling both the first and second enameled wires to be electrically connected to the circuit connector 4. The circuit connector 4 can be used to connect to the external circuitry of the sensor 100, allowing the sensor 100 to be used in operation.

[0048] The shielding cover 2 has two connecting holes 20b, and the sensor housing 1 can also be provided with two corresponding limiting parts 11. When the shielding cover 2 is assembled in the receiving space 10, each limiting part 11 is respectively disposed in one connecting hole 20b. In this way, along the circumference of the shielding cover 2, since the limiting part 11 is located in the connecting hole 20b, when the shielding cover 2 has a tendency to rotate around its own central axis, the hole wall of the connecting hole 20b can abut against the limiting part 11, so that the limiting part 11 can restrict the shielding cover 2 from rotating around its own central axis. This effectively reduces the risk of the shielding cover 2 rotating when assembled in the receiving space 10, thereby improving the assembly stability of the shielding cover 2.

[0049] Each limiting part 11 may include two limiting posts 111, with the two limiting posts 111 forming a through-hole 110 at an interval. When the limiting part 11 is positioned within a connecting hole 20b, the enameled wire can pass through the through-hole 110 to pass through the limiting posts 111. The enameled wire is sandwiched between the two limiting posts 111. Furthermore, since the limiting part 11 includes two limiting posts 111, and these two limiting posts 111 form a through-hole 110 at an interval, the enameled wire extending from the connecting hole 20b is directly moved into the through-hole 110 through the notch. This makes the entire assembly process more convenient and avoids the need for operators to adjust the position of the enameled wire.

[0050] Because the enameled wire passes through the notch 110 to the limiting part 11, it passes through the connecting hole 20b and extends out of the shield 2. This creates a limiting part 11 between the enameled wire and the shield 2 (i.e., the wall of the connecting hole 20b) in the circumference of the shield 2. Since the hardness of the limiting part 11 is less than that of the shield 2, it can mitigate scratch damage to the protective layers of the first and second enameled wires to a certain extent. For example, in one embodiment of this application, the shield 2 is made of silicon steel, and the limiting part 11 is made of plastic. Preferably, the hardness of the limiting part 11 is less than the hardness of the protective layers of the first and second enameled wires, preventing damage to the protective layers of the first and second enameled wires and protecting their integrity.

[0051] It is also important to understand that, to ensure good electromagnetic interference resistance, the shield 2 is typically made of silicon steel. However, silicon steel is prone to damaging the protective layers of the first and second enameled wires. For example, the connection between the connecting hole 20b and the inner surface of the shielding space 20a forms a right-angled sharp corner. Due to the high hardness of silicon steel, the shield 2, made of high-hardness materials such as silicon steel, is highly susceptible to damaging the protective layers of the first and second enameled wires. Grinding this right-angled sharp corner would complicate the manufacturing process of the shield 2 and increase production costs.

[0052] It should also be noted that in the above embodiments, the shielding cover 2 having two connecting holes 20b represents the case where the shielding cover 2 has multiple connecting holes 20b. When there are multiple connecting holes 20b, the connecting segments of multiple enameled wires can extend from the multiple connecting holes 20b respectively. However, this application is not limited to this. In some other embodiments of this application, the shielding cover 2 may have only one connecting hole 20b, and the sensor housing 1 may also be provided with a limiting part 11.

[0053] Furthermore, this application uses the example of a limiting part 11 including two limiting posts 111, with the two limiting posts 111 spaced apart to form a through-hole 110. In other embodiments of this application, the limiting part 11 may also be a single integral part, and the limiting part 11 may be provided with through holes, notches, or other spatial structures suitable for the enameled wire to pass through the limiting part 11.

[0054] In summary, according to the sensor 100 of this application, by providing a limiting part 11 in the sensor housing 1, not only can damage to the protective layer of the enameled wire be avoided, but the rotation of the shield 2 can also be restricted, thereby improving the assembly stability of the shield 2.

[0055] In some embodiments of this application, the outer contour of the limiting part 11 is adapted to abut against the wall of the connecting hole 20b for limiting. Thus, during the assembly of the shielding cover 2 onto the sensor housing 1, the operator aligns the connecting hole 20b with the limiting part 11. Because the outer contour of the limiting part 11 is adapted to abut against the wall of the connecting hole 20b, the limiting part 11 plays a positioning role for the shielding cover 2 during assembly, allowing for more precise control of the assembly position of the shielding cover 2. Furthermore, after the shielding cover 2 is assembled, since the outer contour of the limiting part 11 always abuts against the wall of the connecting hole 20b, the limiting part 11 more effectively restricts the shielding cover 2 from rotating around its own central axis, further improving the assembly stability of the shielding cover 2.

[0056] Combination Figure 2 and Figure 5 As shown, in some embodiments of this application, the circuit connector 4 includes a circuit board 41 and a pin connector 42. The pin connector 42 includes a fixing plate 421 and at least two pins 422. The pins 422 are fixed to the fixing plate 421, and the fixing plate 421 is fixedly connected to the circuit board 41. This achieves the effect of fixed connection between the pins 422 and the circuit board 41, and the pins 422 and the circuit board 41 can also be electrically connected. The pins 422 are used to connect to an external circuit to achieve the effect of electrical connection between the sensor 100 and the external circuit, thereby enabling the sensor 100 to be used in operation. Additionally, the connecting segment of the enameled wire is electrically connected to the circuit board 41, thus enabling the circuit connector 4 to connect between the enameled wire and the external circuit.

[0057] like Figure 2 As shown, a clearance notch 410 is provided on the side of the circuit board 41 opposite to the pin 42. The clearance notch 410 is used to avoid the shielding cover 2, and the edge of the clearance notch 410 is defined by the circuit board 41 to be adapted to abut against the limiting part 11 for limiting. This also allows the shielding cover 2 and the circuit connector 4 to mutually limit each other, improving the assembly stability of the shielding cover 2 and the circuit connector 4. For example, in some embodiments, the shielding cover 2 is assembled and positioned by being provided on the limiting part 11, thus giving the shielding cover 2 good assembly stability. Furthermore, since the edge of the clearance notch 410 abuts against the limiting part 11, the shielding cover 2 plays a limiting role on the circuit connector 4, thereby improving the assembly stability of the circuit connector 4.

[0058] Combination Figure 2 , Figure 3 and Figure 6 As shown, in some embodiments of this application, the sensor housing 1 is further provided with a positioning support 12, which is located within the accommodating space 10. The positioning support 12 includes a positioning body 121 and at least one support body 122. The positioning body 121 is positioned and engaged with a positioning groove 4210 disposed on the fixing plate 421, and the support body 122 is used to support the circuit board 41 in a first direction. It should be understood that the first direction can be understood as the thickness direction of the sensor 100, such as... Figure 2 and Figure 3 The Z-direction is shown in the figure.

[0059] For example, when the circuit connector 4 is assembled into the sensor housing 1, the positioning body 121 moves into the positioning groove 4210 provided in the fixing plate 421, thereby achieving the effect of positioning and assembling the circuit connector 4 and the sensor housing 1. Furthermore, the positioning body 121 abuts against the groove surface of the positioning groove 4210, which also restricts the movement of the circuit connector 4 and improves the assembly stability of the circuit connector 4. And combined with... Figures 1 to 3 As shown, along the length direction of sensor 100 (e.g.) Figures 1 to 3 As shown in the X direction, the positioning body 121 and the sensor housing 1 are spaced apart. When the circuit connector 4 is assembled into the sensor housing 1, the fixing plate 421 is sandwiched between the positioning body 121 and the sensor housing 1 in the length direction of the sensor 100, thereby restricting the movement of the circuit connector 4 in the length direction of the sensor 100 and further improving the assembly stability of the circuit connector 4.

[0060] The support 122 rests beneath the circuit board 41, ensuring its flatness. This also creates a gap between the circuit board 41 and the groove surface of the sensor housing 1. It's important to understand that the sensor 100 typically requires encapsulation with adhesive. The support 122 creates this gap, allowing the adhesive to penetrate between the circuit board 41 and the groove surface during encapsulation, resulting in a larger contact area and further improving the assembly stability of the circuit connector 4.

[0061] Combination Figure 2 and Figure 3 As shown, in some embodiments of this application, the sensor housing 1 is further provided with at least one set of snap-fit ​​fixing components 13. The snap-fit ​​fixing components 13 include support pads 131 and snap fasteners 132. The support pads 131 and snap fasteners 132 are arranged at intervals along a first direction to form a snap-fit ​​space, which is used to snap the circuit connector 4. It should be understood that the first direction can be understood as the thickness direction of the sensor 100, such as... Figure 2 and Figure 3 The Z-direction is shown in the figure.

[0062] During the assembly of the circuit connector 4 into the sensor housing 1, the operator places the circuit connector 4 on top along the thickness direction of the sensor 100, and then drives the circuit connector 4 toward the latching member 132, so that the circuit connector 4 is locked in the locking space, thereby achieving the effect of fixed assembly of the circuit connector 4 in the thickness direction of the sensor 100. Furthermore, since the support pad 131 is located below the circuit connector 4 (specifically, the circuit board 41), a gap is provided between the circuit connector 4 and the sensor housing 1. This allows the adhesive to penetrate between the circuit connector 4 and the groove surface of the sensor housing 1 during the encapsulation process of the sensor 100, resulting in a larger contact area between the adhesive and the circuit connector 4, further improving the assembly stability of the circuit connector 4.

[0063] In some embodiments of this application, the surface of the support pad 131 used to support the circuit connector 4 and the surface of the support body 122 used to support the circuit connector 4 are on the same plane in the first direction, which ensures the horizontal state of the circuit connector 4 and improves the assembly stability of the circuit connector 4.

[0064] See Figure 2 and Figure 3As shown, in some embodiments of this application, the surface of the latching member 132 facing away from the support pad 131 is constructed as an inclined surface, which extends inclinedly toward the support pad 131 along a first direction. This reduces the resistance generated by the latching member 132 on the circuit connector 4 during the process of the operator snapping the circuit connector 4 into the locking space. Therefore, by extending inclinedly toward the support pad 131 along the first direction of the surface of the latching member 132 facing away from the support pad 131, it is possible to effectively limit the circuit connector 4 with the latching member 132 and reduce the assembly difficulty.

[0065] Combination Figure 1 , Figure 3 and Figure 6 As shown, in some embodiments of this application, the sensor housing 1 includes a housing base 1a and a housing cover 1b. The housing base 1a is provided with a recessed receiving groove, and the housing cover 1b covers the opening of the receiving groove to define the receiving space 10.

[0066] The peripheral wall of the accommodating groove is provided with a snap-fit ​​groove 141 and / or a snap-fit ​​protrusion 142, and the cover 1b is provided with a snap-fit ​​protrusion 142 and / or a snap-fit ​​groove 141. The snap-fit ​​protrusion 142 engages with the snap-fit ​​groove 141, thereby achieving the snap-fit ​​assembly effect between the cover 1b and the base 1a. This eliminates the need for connecting parts to achieve a fixed assembly of the cover 1b and the base 1a. For example, as shown... Figure 3 and Figure 6 As shown, in one embodiment of this application, the peripheral wall of the receiving groove is provided with a snap-fit ​​groove 141, and the cover 1b is provided with a snap-fit ​​protrusion 142 as an example. However, this application is not limited to this. In other embodiments, the peripheral wall of the receiving groove may be provided with a snap-fit ​​protrusion 142, and the peripheral wall of the cover 1b may be provided with a snap-fit ​​groove 141; or, the peripheral wall of the receiving groove may be provided with both a snap-fit ​​groove 141 and a snap-fit ​​protrusion 142, and the peripheral wall of the cover 1b may be provided with both a snap-fit ​​groove 141 and a snap-fit ​​protrusion 142. When the cover 1b and the base 1a are fixedly assembled, the snap-fit ​​protrusion 142 and the snap-fit ​​groove 141 are engaged in a one-to-one snap-fit ​​fit.

[0067] When the cover 1b is assembled onto the base 1a, the shield 2 and / or the circuit connector 4 are clamped and fixed between the cover 1b and the base 1a along the first direction (the thickness direction of the sensor 100). In this way, the sensor housing 1 acts as a limiter for the shield 2 and / or the circuit connector 4 in the first direction, thereby further improving the assembly stability of the shield 2 and / or the circuit connector 4 along the first direction.

[0068] See Figure 2As shown, in some embodiments of this application, the inner ring wall of the shielding cover 2 is provided with a flow guide 20c, which communicates with the shielding space 20a. The housing 1a is provided with a first retaining ring 15, which includes a first retaining ring layer 151 and a second retaining ring layer 152. Along the first direction, the second retaining ring layer 152 is disposed at the end of the first retaining ring layer 151 near the housing cover 1b, and the outer contour dimension of the first retaining ring layer 151 is larger than the outer contour dimension of the second retaining ring layer 152. The first retaining ring layer 151 is adapted to abut against the inner ring wall of the shielding cover 2, and the second retaining ring layer 152 is spaced apart from the inner ring wall of the shielding cover 2, so that the flow guide 20c communicates with the receiving space 10.

[0069] When the shielding cover 2 is assembled onto the housing 1a, the first retaining ring layer 151 abuts against and limits the inner ring wall of the shielding cover 2, effectively restricting the movement of the shielding cover 2 in its radial direction. Furthermore, the second retaining ring layer 152 is spaced apart from the inner ring wall of the shielding cover 2, thus preventing the second retaining ring layer 152 from blocking the flow port 20c, allowing the flow port 20c to connect the shielding space 20a with the receiving space 10. During the encapsulation process of the sensor 100, the adhesive flowing through the receiving space 10 flows into the gap formed between the second retaining ring layer 152 and the inner ring wall of the shielding cover 2, and then flows into the shielding space 20a through the flow port 20c for encapsulation.

[0070] Combination Figure 1 , Figure 3 and Figure 6 As shown, in some embodiments of this application, a support platform 153 is formed at the adjacent junction of the first retaining ring layer 151 and the second retaining ring layer 152. The cover 1b is provided with a second retaining ring 16. When the cover 1b is assembled onto the housing base 1a, the second retaining ring 16 is adapted to abut against the support platform 153 along the first direction. This allows the support platform 153 to limit the position of the cover 1b, while the support platform 153 also provides good support to the cover 1b through the second retaining ring 16, preventing excessive compression of the cover 1b towards the shielding cover 2 along the first direction and ensuring the integrity of the shielding cover 2.

[0071] 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.

[0072] 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, characterized in that, include: A sensor housing, wherein an accommodating space is provided inside the sensor housing, and a limiting part is provided within the accommodating space; A shielding cover, wherein a shielding space is provided inside the shielding cover, and a connecting hole is provided on the outer ring wall of the shielding cover, the connecting hole communicating with the shielding space; when the shielding cover is assembled in the receiving space, the limiting part is located in the connecting hole. A magnetic sensing component is assembled within the shielding space, and the enameled wire of the magnetic sensing component passes through the limiting portion to extend out of the shielding space; the hardness of the limiting portion is less than the hardness of the shielding cover. A circuit connector is assembled within the receiving space, and all the terminals of the enameled wire are connected to the circuit connector.

2. The sensor according to claim 1, characterized in that, The outer contour of the limiting part is adapted to abut against the wall of the communicating hole.

3. The sensor according to claim 1, characterized in that, The limiting part includes two limiting posts, which are spaced apart to form a through-hole.

4. The sensor according to claim 1, characterized in that, The circuit connector includes a circuit board and a pin connector, wherein the pin connector includes a fixing plate and at least two pins, the pins are fixed to the fixing plate, and the fixing plate is fixedly connected to the circuit board; The circuit board has a clearance notch on the side opposite to the pin member. The clearance notch is used to avoid the shielding cover, and the edge of the clearance notch is defined by the circuit board to abut against the limiting part.

5. The sensor according to claim 1, characterized in that, The circuit connector includes a circuit board and a pin connector, wherein the pin connector includes a fixing plate and at least two pins, the pins are fixed to the fixing plate, and the fixing plate is fixedly connected to the circuit board; The sensor housing is further provided with a positioning support portion located within the accommodating space. The positioning support portion includes a positioning body and at least one support body. The positioning body engages with a positioning groove disposed on the fixed plate, and the support body is used to support the circuit board in a first direction.

6. The sensor according to claim 1, characterized in that, The sensor housing is also provided with at least one set of snap-fit ​​fixing components, the snap-fit ​​fixing components include support pads and snap fasteners, the support pads and snap fasteners are arranged at intervals along a first direction to form a snap-fit ​​space, the snap-fit ​​space is used to snap the circuit connector.

7. The sensor according to claim 6, characterized in that, The fastener extends obliquely toward the support pad along the first direction away from the surface of the support pad.

8. The sensor according to any one of claims 1 to 7, characterized in that, The sensor housing includes a housing base and a housing cover. The housing base is provided with a recessed receiving groove, and the housing cover is disposed over the opening of the receiving groove to define the receiving space. The peripheral wall of the receiving groove is provided with a snap-fit ​​groove and / or a snap-fit ​​protrusion, and the cover is provided with a snap-fit ​​protrusion and / or a snap-fit ​​groove, wherein the snap-fit ​​protrusion engages with the snap-fit ​​groove. When the cover is assembled onto the base, the shield and / or the circuit connector are clamped and fixed between the cover and the base along the first direction.

9. The sensor according to claim 8, characterized in that, The inner ring wall of the shielding cover is provided with a flow guide port, which is connected to the shielding space; The housing is provided with a first retaining ring, which includes a first retaining ring layer and a second retaining ring layer. Along the first direction, the second retaining ring layer is disposed at the end of the first retaining ring layer near the housing cover, and the outer contour dimension of the first retaining ring layer is larger than the outer contour dimension of the second retaining ring layer. The first retaining ring layer is adapted to abut against the inner ring wall of the shield, and the second retaining ring layer is spaced apart from the inner ring wall of the shield, so that the flow guide is connected to the receiving space.

10. The sensor according to claim 9, characterized in that, A support platform is formed at the junction of the first retaining ring layer and the second retaining ring layer; The cover is provided with a second retaining ring, which is adapted to abut against the support platform along the first direction.

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