Coil component and electric valve with same
By employing a limiting structure in the electric valve to cooperate with the limiting mechanism of the stator plate, the complex machining problems of the stator housing and stator plate are solved, thereby improving structural stability and electrical performance while reducing production costs.
Patent Information
- Application Number
- CN202520538167.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-25
AI Technical Summary
The existing positioning and mating method between the stator housing and the stator plate in electric valves requires setting multiple notches on the stator housing, which leads to complex processing technology, high cost and easy injection molding defects.
The design employs a limiting structure that works in conjunction with the stator plate limiting mechanism. Only interconnected passageways and limiting structures are provided on the circumferential sidewalls of the stator housing, reducing gaps, ensuring uniform filling of the injection molding compound, and simplifying the processing.
It improves the structural stability and electrical performance of coil components, reduces processing complexity and production costs, and avoids injection molding defects.
Smart Images
Figure CN223881823U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to valve technical field, specifically, a coil component and electric valve with it. BACKGROUND
[0002] At present, the coil assembly in electric valve mainly includes stator shell and stator pole plate, and is an important part of realizing accurate flow control. In the traditional design of electric valve, in order to ensure the accurate positioning of stator pole plate in stator shell, a plurality of notches are usually arranged on the circumference of stator shell, and the notches and the protruding parts on stator pole plate form positioning cooperation.
[0003] However, the above positioning mode needs to arrange more notches on the circumference of stator shell, which makes the connection area between stator pole plate and stator shell more complex, and further leads to more complex processing technology of stator pole plate and stator shell, higher requirement for processing precision, increased processing difficulty and cost, and reduced production efficiency. SUMMARY
[0004] The utility model provides a kind of coil component and electric valve with it, to solve the problem that the positioning cooperation mode of stator shell and stator pole plate based on multiple notches in prior art needs to open more notches on stator shell, leads to the processing technology of stator pole plate and stator shell is more complex.
[0005] According to one aspect of the utility model, a coil component is provided, which includes: a stator shell having a receiving cavity, a through hole and a limiting structure being arranged on the circumferential side wall of the stator shell and being in communication with each other, the limiting structure being located at the end of the through hole along the circumference of the stator shell, and the part of the circumferential side wall of the stator shell outside the through hole and the limiting structure being a closed structure; a skeleton, part of the skeleton being arranged in the receiving cavity, and the other part of the skeleton extending out of the receiving cavity from the through hole; a stator pole plate connected with the skeleton, at least part of the stator pole plate being located in the receiving cavity, and the stator pole plate having a limiting part in limiting cooperation with the limiting structure.
[0006] Further, the limiting structure is a limiting groove, and there are two limiting structures, which are respectively located at the two ends of the through hole along the circumference of the stator shell; the edge of the stator pole plate is spaced apart from each other along the circumference of the stator shell and provided with two protrusions, and the two protrusions form two limiting parts, each of which is in limiting cooperation with one limiting structure.
[0007] Further, in the axial direction of the stator shell, there is a material receiving gap between the side wall of the limiting structure and the limiting part; and in the axial direction of the stator shell, the size of the limiting structure is smaller than that of the through hole.
[0008] Further, the length of the material containing gap in the axial direction of the stator shell is H, and 0.3mm≤H≤2mm; the length of the through port in the circumferential direction of the stator shell is L, and the length of the limiting structure is C, and 1mm≤C≤0.25L.
[0009] Further, the bottom wall of the limiting structure extends in the axial direction of the stator shell, the side wall of the limiting structure extends in the circumferential direction of the stator shell, and the junction of the bottom wall of the limiting structure and the side wall of the limiting structure has a transition curved surface.
[0010] Further, the edge of the stator pole plate is provided with at least one flow guide hole in the circumferential direction of the stator shell, and the flow guide hole communicates the spaces on both sides of the stator pole plate in the axial direction of the stator shell.
[0011] Further, in the radial direction of the stator shell, the cross-sectional area of the flow guide hole is S, and 1.5mm 2 ≤S≤7mm 2 .
[0012] Further, the stator shell comprises an upper shell and a lower shell connected to each other, the upper shell and the lower shell are coaxially arranged, the side wall of the upper shell has a first notch, the side wall of the lower shell has a second notch, the first notch and the second notch are correspondingly arranged, and the first notch and the second notch cooperate to form the through port; the end of the first notch in the circumferential direction of the stator shell is provided with a third notch, the first notch and the third notch are communicated, the end of the second notch in the circumferential direction of the stator shell is provided with a fourth notch, the second notch and the fourth notch are communicated, the third notch and the fourth notch are correspondingly arranged, and the third notch and the fourth notch cooperate to form the limiting structure.
[0013] Further, the stator pole plate comprises an upper pole plate and a lower pole plate, the upper pole plate and the lower pole plate are coaxially arranged, the upper pole plate comprises a first pole plate and a plurality of first pole teeth, the lower pole plate comprises a second pole plate and a plurality of second pole teeth, the first pole plate abuts against the second pole plate, and the plurality of first pole teeth and the plurality of second pole teeth are respectively located inside the framework; the upper pole plate is provided with two first protrusions at intervals, the lower pole plate is provided with two second protrusions at intervals, and the two first protrusions and the two second protrusions are correspondingly arranged one by one; wherein, one first protrusion and one second protrusion cooperate to form one protruding block.
[0014] Further, the coil assembly further comprises an encapsulation layer, an upper waterproof shell and a lower waterproof shell, the upper waterproof shell is sleeved on the outer periphery of the upper shell, and the lower waterproof shell is sleeved on the outer periphery of the lower shell; the encapsulation layer is arranged between the upper waterproof shell and the lower waterproof shell in the circumferential direction of the stator shell, the encapsulation layer encapsulates the junction surface of the upper shell and the lower shell, and the junction surface divides the encapsulation layer into two symmetrical parts; the part of the upper waterproof shell encapsulating the outer peripheral surface of the stator shell is an upper peripheral surface, and the part of the lower waterproof shell encapsulating the outer peripheral surface of the stator shell is a lower peripheral surface, and the upper peripheral surface and the lower peripheral surface are symmetrically arranged relative to the junction surface.
[0015] According to another aspect of the present application, an electric valve is provided, which comprises the coil component.
[0016] The coil component is limited by the limiting structure and the limiting part on the stator pole plate, so that relative rotation between the stator pole plate and the stator shell caused by vibration or external force during operation of the coil component is reduced, and the overall structural stability and reliability of the coil component are improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments illustrated in the drawings are provided to explain the present application and, do not limit the present application. In the drawings:
[0018] Figure 1 FIG. 1 shows a structure schematic diagram of a coil component provided by the present application;
[0019] Figure 2 FIG. 2 shows a structure schematic diagram of a coil component provided by the present application from a side view perspective;
[0020] Figure 3 FIG. 3 shows a structure schematic diagram of a coil component provided by the present application; Figure 2
[0021] Figure 4 FIG. 4 shows a structure schematic diagram of a lower shell provided by the present application;
[0022] Figure 5 FIG. 5 shows a structure schematic diagram of a coil component provided by the present application;
[0023] Figure 6 FIG. 6 shows a structure schematic diagram of an upper pole plate provided by the present application;
[0024] Figure 7 FIG. 7 shows a structure schematic diagram of a coil component provided by the present application;
[0025] Figure 8 Partially sectional view of the coil component is shown.
[0026] Among them, the above-mentioned drawings include the following reference signs:
[0027] 110, stator housing; 1101, through port; 1102, limiting structure; 111, upper shell; 112, lower shell;
[0028] 120, skeleton; 121, upper skeleton; 122, lower skeleton;
[0029] 130, stator pole plate; 131, protrusion; 132, flow guide hole; 133, upper pole plate; 1331, first protrusion; 134, lower pole plate; 1341, second protrusion;
[0030] 140, wire package; 141, upper wire package; 142, lower wire package; 150, pin; 160, material containing gap;
[0031] 210, upper waterproof shell; 212, waterproof cover; 220, lower waterproof shell; 420, encapsulation layer; 500, wire. DETAILED DESCRIPTION
[0032] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.
[0033] As Figures 1 to 7As shown, the utility model embodiment provides a kind of coil component, which includes: stator shell 110, skeleton 120 and stator pole plate 130.Wherein, stator shell 110 has accommodating cavity, and the circumferential side wall of stator shell 110 is provided with the through port 1101 and the limiting structure 1102 that are interconnected, and the limiting structure 1102 is located at the end of the through port 1101 along the circumference of stator shell 110, and the part of the circumferential side wall of stator shell 110 outside through port 1101 and limiting structure 1102 is closed structure, and the part of the circumferential side wall of stator shell 110 except through port 1101 and limiting structure 1102 is not notched, i.e. the part of the circumferential side wall of stator shell 110 except through port 1101 and limiting structure 1102 will not have injection plastic to enter or pass through.Partial skeleton 120 is arranged in accommodating cavity, and another part of skeleton 120 is stretched from the through port 1101 and is located in the accommodating cavity outside, and the skeleton 120 outside accommodating cavity is fixed with pin 150, and pin 150 is electrically connected with external control circuit, and then electric signal is transmitted to wire package 140, so that wire package 140 generates magnetic field.Stator pole plate 130 is connected with skeleton 120, and at least part of stator pole plate 130 is located in accommodating cavity, and stator pole plate 130 has limiting portion, and limiting portion is limited with limiting structure 1102.
[0034] The technical scheme of the utility model is applied, the limiting structure 1102 is limited with the limiting portion on the stator pole plate 130, the relative rotation between the stator pole plate 130 and the stator shell 110 caused by vibration or external force during operation of the coil component can be reduced, and the overall structural stability and reliability of the coil component are improved.In the prior art, more notches are machined on the circumference of the stator shell 110, the machining process is relatively complex, and local stress concentration is prone to occur during injection molding, so that the injection plastic at the notch is not fully filled, bubbles and cavities are generated, and then the magnetic field at the notch is leaked, the insulation performance is reduced, etc.In the present application, the part of the circumferential side wall of the stator shell 110 outside the through port 1101 and the limiting structure 1102 is designed as a closed structure, so that only one notch composed of the limiting structure 1102 and the through port 1101 needs to be machined on the circumferential side wall of the stator shell 110, which not only makes the injection plastic more uniformly and fully filled in the through port 1101 and the limiting structure 1102, optimizes the electrical performance of the coil component, but also simplifies the design and manufacturing process of the stator pole plate, reduces the complexity of machining and production cost.
[0035] In the present application, the specific structure of the limiting portion is not limited, and can be designed as a slot, a fastener or a protrusion, etc., as long as it can be limited with the limiting structure 1102, and the limiting structure 1102 can be a slotted or holed structure.
[0036] In the embodiment, in the axial direction of the stator shell 110, the projection of the limiting portion along the end of the stator shell 110 radially coincides with the projection of the edge of the circumferential side wall of the stator shell 110.
[0037] In other embodiments, in the circumferential direction of the stator shell 110, the end of the limiting portion along the stator shell 110 radially protrudes from the circumferential side wall of the stator shell 110.
[0038] As shown in Figure 4 and Figure 5 , the limiting structure 1102 is a limiting groove, and the limiting structure 1102 is two, and the two limiting structures 1102 are respectively located at both ends of the stator shell 110 along the circumference of the stator shell 110. The edges of the stator pole plate 130 are spaced apart in the circumferential direction of the stator shell 110 and are provided with two protrusions 131, and the two protrusions 131 form two limiting portions, and each protrusion 131 is limited and matched with one limiting structure 1102. The cooperation of the two protrusions 131 and the two limiting structures 1102 not only limits the position of the stator pole plate 130 in the clockwise and counterclockwise directions of the stator shell 110, but also provides an additional support point for the stator pole plate 130, ensures the accurate alignment between the stator pole plate 130 and the stator shell 110, effectively prevents the deflection or vibration of the stator pole plate 130 when the coil component is running or under stress, reduces the electrical performance fluctuations caused by mechanical movement, and improves the positioning accuracy and overall structural stability of the coil component. And the structure of the protrusion 131 is simple, which improves the convenience of processing and assembly.
[0039] In the present application, the specific structure of the protrusion 131 is not limited, which can be set as a wedge structure, a curved knife structure, etc. and is matched with the limiting structure 1102, as long as it can be limited and matched with the limiting structure 1102.
[0040] In the embodiment, the side of the protrusion 131 away from the pin 150 has a groove, which is convenient for processing the protrusion 131. In other embodiments, the protrusion 131 is directly protruded from the circumferential edge of the stator pole plate 130, and the groove is not processed.
[0041] As shown in Figure 2 , in the axial direction of the stator shell 110, the limiting structure 1102 along the side wall of the stator shell 110 circumferentially has a material containing gap 160 between the limiting portion. The setting of the material containing gap 160 reserves a tolerance space between the stator pole plate 130 and the stator shell 110, reduces the phenomenon of interference fit between the stator pole plate 130 and the stator shell 110 caused by manufacturing tolerance or assembly error, makes the above assembly process more smooth, reduces the damage risk of components in the assembly process, improves the assembly quality and production efficiency.
[0042] Further, in the axial direction of the stator housing 110, the size of the limiting structure 1102 is smaller than the size of the through port 1101. The gap at the through port 1101 is large, and in the prior art, the injection-molded material at this position is thick after injection molding, so that when cooling, the outer injection-molded material cools first, and when the internal injection-molded material at the through port 1101 begins to cool, a shrinkage force is generated, and at the same time, a pulling force is generated from the wire package 140 inside the stator housing 110 and the pin 150 outside the stator housing 110, so that the internal injection-molded material at the through port 1101 is unevenly stressed, and is prone to produce pores and other injection molding defects when cooling. In the present application, the injection-molded material fills the through port 1101 and the limiting structure 1102, including the above-mentioned material gap 160, during the injection molding process. Since the size of the limiting structure 1102 is smaller than the size of the through port 1101, the amount of injection-molded material filled in the material gap 160 area is relatively less than that at the through port 1101, and cools first than the internal injection-molded material at the through port 1101. Thus, when the internal injection-molded material at the through port 1101 begins to cool and shrink, the pulling force from the injection-molded material at the two material gaps 160 is increased, making the stress on the internal injection-molded material at the through port 1101 more uniform, thereby reducing the shrinkage of the internal injection-molded material at the through port 1101, reducing the formation of pores in the injection-molded material at the through port 1101, and improving the insulation performance and electrical performance of the coil component.
[0043] Specifically, in the axial direction of the stator housing 110, the length of the material gap 160 is H, and 0.3mm≤H≤2mm. If H is greater than 2mm, the material gap 160 is too large, and the injection-molded material may not flow uniformly in the material gap 160 during the injection molding process, resulting in the formation of voids, bubbles and other injection molding defects, affecting the electrical performance and mechanical strength of the coil component. If H is less than 0.3mm, the material gap 160 is too small, not only can cause interference fit due to tolerance accumulation during assembly, making assembly difficult and even damaging the parts, but also makes it difficult for the injection-molded material to pass through the material gap 160 during injection molding, losing the optimization effect of the injection molding at the through port 1101. Therefore, in the present application, 0.3mm≤H≤2mm, so that the stator housing 110 and the stator pole plate 130 are provided with sufficient tolerance space to ensure smooth assembly and damage-free fit of the parts, and the injection-molded material flows smoothly and uniformly during the injection molding process, optimizing the injection molding effect at the through port 1101. In the present application, H can be 0.5mm, 0.6mm, 0.9mm or 1mm.
[0044] As Figure 5As shown, the length of the through hole 1101 in the circumferential direction of the stator shell 110 is L, the length of the limiting structure 1102 is C, and 1mm≤C≤0.25L. If C is greater than 0.25L, it means that the stator shell 110 has a relatively long gap in the circumferential direction, which is easy to damage the uniformity of the flow of the injection material, and may cause the injection material to accumulate in this area, forming injection defects such as bubbles and voids, thereby affecting the electrical performance of the coil component, and a longer gap will also weaken the structural strength of the stator shell 110, causing it to be easily deformed when subjected to external influences; if C is less than 1mm, the limiting effect of the limiting structure 1102 will be reduced, and the stator pole plate 130 may be more likely to displace during operation, affecting the overall performance of the coil component, and too little injection material passing through the material containing gap 160 during injection causes the cooled injection material at the material containing gap 160 to not provide adequate pulling force for the injection material at the through hole 1101. Therefore, in the present application, 1mm≤C≤0.25L, which sets the length of the limiting structure 1102 moderately, ensures smooth flow of the injection material during the injection process, reduces the formation of accumulation and bubbles, and also provides sufficient limiting force to maintain the precise position of the stator pole plate 130 within the stator shell 110, reducing performance degradation due to mechanical displacement.
[0045] As shown in Figure 3 , the bottom wall of the limiting structure 1102 extends in the axial direction of the stator shell 110, the side wall of the limiting structure 1102 extends in the circumferential direction of the stator shell 110, and the connection between the bottom wall of the limiting structure 1102 and the side wall of the limiting structure 1102 has a transition curve. The provision of the transition curve not only improves the convenience of processing, but also reduces stress concentration at the connection between the bottom wall of the limiting structure 1102 and the side wall of the limiting structure 1102, improving the structural strength and service life of the limiting structure 1102. At the same time, the transition curve can also provide a movement path for the limiting part, which can guide the limiting part to return to its original assembly position when it moves up and down in the axial direction, avoiding jamming or deviation of the limiting part during movement.
[0046] As shown in Figure 6 and Figure 7 , in the radial direction of the stator shell 110, the cross-sectional area of the flow guide hole 132 is S, and 1.5mm 2 ≤S≤7mm 2 . If S is less than 1.5mm 2 , the cross-sectional area of the flow guide hole 132 is too small, which limits the flow speed and flow capacity of the injection material, causing the injection material to be insufficiently filled outside the wire package 140, thereby weakening the fixing effect of the injection material on the wire package 140 and increasing the risk of displacement of the wire package 140 during operation or vibration; if S is greater than 7mm 2If S>7mm, the cross-sectional area of the flow guide hole 132 is too large, which reduces the structural strength and deformation resistance of the stator pole plate 130. Therefore, in the present application, 1.5mm 2 ≤S≤7mm 2 . In this way, the flow of the injection material is sufficient and appropriate, so that the injection material can fully wrap the wire package 140, and the structural strength of the stator pole plate 130 is ensured, avoiding performance degradation and failure of the coil component due to insufficient strength. In the present application, S can be 1.5mm 2 , 3.5mm 2 , 5mm 2 , or 7mm 2 .
[0047] As shown in Figure 1 and Figure 2 , the stator housing 110 includes an upper housing 111 and a lower housing 112 connected to each other, the upper housing 111 and the lower housing 112 are coaxially arranged, the side wall of the upper housing 111 has a first notch, the side wall of the lower housing 112 has a second notch, the first notch and the second notch are correspondingly and symmetrically arranged, and the first notch and the second notch cooperate to form a through hole 1101. The end of the first notch along the circumference of the stator housing 110 is provided with a third notch, the first notch and the third notch are communicated, the end of the second notch along the circumference of the stator housing 110 is provided with a fourth notch, the second notch and the fourth notch are communicated, the third notch and the fourth notch are correspondingly and symmetrically arranged, and the third notch and the fourth notch cooperate to form a limiting structure 1102. The above arrangement ensures the structural strength of the stator housing 110 while achieving precise positioning with the stator pole plate 130, improving the durability of the stator housing 110 and the overall structural strength of the coil component.
[0048] The connection between the side of the first notch along the circumference of the stator housing 110 and the side of the first notch along the axial direction of the stator housing 110 has a transition arc. The connection between the side of the second notch along the circumference of the stator housing 110 and the side of the second notch along the axial direction of the stator housing 110 has a transition arc.
[0049] As shown in Figure 7As shown, the stator pole plate 130 includes an upper pole plate 133 and a lower pole plate 134, the upper pole plate 133 is coaxially arranged with the lower pole plate 134, the upper pole plate 133 includes a first pole plate and a plurality of first pole teeth, the plurality of first pole teeth are arranged at intervals on the edge of the first pole plate along the circumference of the stator pole plate 130, the lower pole plate 134 includes a second pole plate and a plurality of second pole teeth, the plurality of second pole teeth are arranged at intervals on the edge of the second pole plate along the circumference of the stator pole plate 130, the first pole plate abuts the second pole plate, and the first pole plate and the second pole plate are limitedly matched, and the plurality of first pole teeth and the plurality of second pole teeth are respectively located inside the framework 120. The upper pole plate 133 is arranged at intervals with two first protrusions 1331, the lower pole plate 134 is arranged at intervals with two second protrusions 1341, and the two first protrusions 1331 and the two second protrusions 1341 are arranged one-to-one. Wherein, one first protrusion 1331 and one second protrusion 1341 cooperate to form one protrusion 131. The above arrangement ensures the stability of the position of the stator pole plate 130 during the injection molding process, and improves the electrical performance and driving performance of the coil component.
[0050] Specifically, at least one first opening is arranged on the edge of the upper pole plate 133 along the circumference of the stator shell 110, at least one second opening is arranged on the edge of the lower pole plate 134 along the circumference of the stator shell 110, and the plurality of first openings and the plurality of second openings are arranged one-to-one, wherein one first opening and one second opening cooperate to form one flow guide hole 132.
[0051] As shown in the figure, Figures 5 to 7 The framework 120 includes an upper framework 121 and a lower framework 122, the first pole teeth are located inside the upper framework 121, and the second pole teeth are located inside the lower framework 122. The wire package 140 includes an upper wire package 141 and a lower wire package 142, the upper wire package 141 is wound outside the upper framework 121, and the lower wire package 142 is wound outside the lower framework 122.
[0052] As shown in the figure, Figure 6 The edge of the stator pole plate 130 is arranged with at least one flow guide hole 132 along the circumference of the stator shell 110, and the flow guide hole 132 communicates the spaces on both sides of the stator pole plate 130 along the axial direction of the stator shell 110. In this way, during the injection molding process, the injection material can smoothly flow to the spaces on both sides of the stator pole plate 130 along the axial direction through the flow guide hole 132, so that the injection material can be uniformly distributed, improving the filling effect. Especially in the area where the upper wire package 141 and the lower wire package 142 are located, the injection material can tightly wrap the upper wire package 141 and the lower wire package 142, forming a continuous injection structure, and improving the fixing strength of the upper wire package 141 and the lower wire package 142.
[0053] As shown in the figure, Figure 8As shown, the coil component further comprises an encapsulation layer 420, an upper waterproof shell 210 and a lower waterproof shell 220, the upper waterproof shell 210 is sleeved on the outer periphery of the upper shell 111, and the lower waterproof shell 220 is sleeved on the outer periphery of the lower shell 112; the encapsulation layer 420 is arranged between the upper waterproof shell 210 and the lower waterproof shell 220 along the circumference of the stator shell 110, the encapsulation layer 420 encapsulates the interface of the upper shell 111 and the lower shell 112, and the interface divides the encapsulation layer 420 into two symmetrical parts; the part of the upper waterproof shell 210 encapsulating the outer circumferential surface of the stator shell 110 is an upper circumferential surface, and the part of the lower waterproof shell 220 encapsulating the outer circumferential surface of the stator shell 110 is a lower circumferential surface, and the upper circumferential surface and the lower circumferential surface are symmetrically arranged relative to the interface.
[0054] When the coil component is injection molded, the upper and lower molds are closed, and when the wire 500 connected with the framework 120 is placed in the upper mold: in the case that the wire 500 faces upward, the upper waterproof shell 210 is placed in the upper mold, and the lower waterproof shell 220 is placed in the lower mold; in the case that the wire 500 faces downward, the upper waterproof shell 210 is placed in the lower mold, and the lower waterproof shell 220 is placed in the upper mold. When the wire 500 is placed in the lower mold during injection molding: in the case that the wire 500 faces upward, the upper waterproof shell 210 is placed in the lower mold, and the lower waterproof shell 220 is placed in the upper mold; in the case that the wire 500 faces downward, the upper waterproof shell 210 is placed in the upper mold, and the lower waterproof shell 220 is placed in the lower mold. Therefore, through the above arrangement, compared with the structure in which the upper circumferential surface of the upper waterproof shell 210 and the lower circumferential surface of the lower waterproof shell 220 are not symmetrical relative to the interface, the structure of the present application does not need to change the mold, that is, when the wire 500 is placed in the upper mold, whether the wire 500 faces upward or downward, a set of molds can be shared; when the wire 500 is placed in the lower mold, whether the wire 500 faces upward or downward, a set of molds can be shared, improving the versatility of the mold. The upper waterproof shell 210 has a protruding waterproof cover 212, and the upper mold and the lower mold both have a space for accommodating the waterproof cover 212.
[0055] In another embodiment of the present application, an electric valve is provided, which comprises the coil component provided in the above embodiment. The coil can effectively solve the problem that the positioning and fitting mode of the multi-gap based stator shell and stator pole plate requires more gaps to be opened on the stator shell, resulting in more complex processing technology of the stator pole plate and the stator shell, and increasing the processing difficulty. The electric valve with the coil component also has the above advantages.
[0056] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.
[0057] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale of the various parts shown in the drawings. Techniques, methods, and apparatus known to those of ordinary skill are not discussed in detail because they would be understood that such techniques, methods, and apparatus are considered part of the specification. In all examples shown and discussed herein, any specific value is to be interpreted as merely an example, and not a limitation. Thus, other examples of the example embodiments can have different values. It is noted that like numbers and letters refer to like elements throughout the several views of the drawings and, as such, no further definitions of these numbers and letters are necessary for understanding the drawings. In the description of the present application, it is to be understood that the orientation terms such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "horizontal", and "top", "bottom" and the like are generally used with reference to the orientation or position shown in the drawings, merely for convenience and simplicity of description and for the purpose of clarity, and are not intended to limit the present application to the particular orientation or position shown, unless otherwise specifically stated. The orientation terms "inner", "outer" refer to the inner and outer relative to the outline of each component.
[0058] In the description of the present application, it is to be understood that the orientation terms such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "horizontal", and "top", "bottom" and the like are generally used with reference to the orientation or position shown in the drawings, merely for convenience and simplicity of description and for the purpose of clarity, and are not intended to limit the present application to the particular orientation or position shown, unless otherwise specifically stated. The orientation terms "inner", "outer" refer to the inner and outer relative to the outline of each component.
[0059] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Well, the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
[0060] In addition, it needs to be explained that the use of "first", "second" and the like words to limit the parts, only for the convenience of the corresponding parts for the distinction, such as no other declaration, the above words have no special meaning, therefore can not be understood as the restriction of the scope of protection of the utility model.
[0061] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A coil component characterized by comprising: The coil component comprises: a stator housing (110) having a receiving cavity, a through port (1101) and a limiting structure (1102) being arranged on the circumferential side wall of the stator housing (110) and being in communication with each other, the limiting structure (1102) being located at the end of the through port (1101) along the circumference of the stator housing (110), and the circumferential side wall of the stator housing (110) being in a closed structure outside the through port (1101) and the limiting structure (1102); a skeleton (120), part of which is arranged in the receiving cavity, and another part of which extends out of the receiving cavity from the through port (1101); a stator pole plate (130) connected with the skeleton (120), at least part of the stator pole plate (130) being located in the receiving cavity, and the stator pole plate (130) having a limiting part in limiting cooperation with the limiting structure (1102).
2. The coil component according to claim 1, characterized by The limiting structure (1102) is a limiting groove, and the limiting structure (1102) is two, and the two limiting structures (1102) are respectively located at the two ends of the through port (1101) along the circumference of the stator housing (110); the edge of the stator pole plate (130) is arranged with two protrusions (131) along the circumference of the stator housing (110), and the two protrusions (131) form two limiting parts, and each protrusion (131) is in limiting cooperation with one limiting structure (1102).
3. The coil assembly of claim 1, wherein, In the axial direction of the stator housing (110), there is a material receiving gap (160) between the side wall of the limiting structure (1102) and the limiting part; in the axial direction of the stator housing (110), the size of the limiting structure (1102) is smaller than the size of the through port (1101).
4. The coil component according to claim 3, wherein in the axial direction of the stator housing (110), the length of the material receiving gap (160) is H, and 0.3mm≤H≤2mm; in the circumferential direction of the stator housing (110), the length of the through port (1101) is L, the length of the limiting structure (1102) is C, and 1mm≤C≤0.25L.
5. The coil assembly of claim 1, wherein, The bottom wall of the limiting structure (1102) extends in the axial direction of the stator housing (110), the side wall of the limiting structure (1102) extends in the circumferential direction of the stator housing (110), and the connection between the bottom wall of the limiting structure (1102) and the side wall of the limiting structure (1102) has a transition curved surface.
6. The coil assembly of claim 1, wherein, The edge of the stator pole plate (130) is arranged with at least one flow guide hole (132) along the circumference of the stator housing (110), and the flow guide hole (132) communicates the spaces on both sides of the stator pole plate (130) along the axial direction of the stator housing (110).
7. The coil assembly of claim 6, wherein, In the radial direction of the stator housing (110), the cross-sectional area of the flow guide hole (132) is S, 1.5mm 2 ≤ S ≤ 7mm 2 .
8. The coil assembly of claim 1, wherein, The stator shell (110) comprises an upper shell (111) and a lower shell (112) connected to each other, the upper shell (111) is coaxially arranged with the lower shell (112), the side wall of the upper shell (111) has a first notch, the side wall of the lower shell (112) has a second notch, the first notch and the second notch are arranged correspondingly, and the first notch and the second notch cooperate to form the through hole (1101); the end of the first notch along the circumference of the stator shell (110) is provided with a third notch, the first notch and the third notch are communicated, the end of the second notch along the circumference of the stator shell (110) is provided with a fourth notch, the second notch and the fourth notch are communicated, the third notch and the fourth notch are arranged correspondingly, and the third notch and the fourth notch cooperate to form the limiting structure (1102).
9. The coil assembly of claim 2, wherein, The stator pole plate (130) comprises an upper pole plate (133) and a lower pole plate (134), the upper pole plate (133) is coaxially arranged with the lower pole plate (134), the upper pole plate (133) comprises a first pole plate and a plurality of first pole teeth, and the lower pole plate (134) comprises a second pole plate and a plurality of second pole teeth, the first pole plate abuts against the second pole plate, and the plurality of first pole teeth and the plurality of second pole teeth are respectively located inside the framework (120). The upper pole plate (133) is spaced apart from two first protrusions (1331), the lower pole plate (134) is spaced apart from two second protrusions (1341), and the two first protrusions (1331) and the two second protrusions (1341) are arranged one by one in a one-to-one correspondence; wherein one first protrusion (1331) and one second protrusion (1341) cooperate to form one protrusion (131).
10. The coil assembly of claim 8, wherein, The coil assembly further comprises an encapsulation layer (420), an upper waterproof shell (210) and a lower waterproof shell (220), the upper waterproof shell (210) is sleeved on the outer periphery of the upper shell (111), and the lower waterproof shell (220) is sleeved on the outer periphery of the lower shell (112); the encapsulation layer (420) is arranged between the upper waterproof shell (210) and the lower waterproof shell (220) along the circumference of the stator shell (110), the encapsulation layer (420) encapsulates the interface between the upper shell (111) and the lower shell (112), and the interface divides the encapsulation layer (420) into two symmetrical parts; the part of the outer peripheral surface of the stator shell (110) encapsulated by the upper waterproof shell (210) is an upper peripheral surface, and the part of the outer peripheral surface of the stator shell (110) encapsulated by the lower waterproof shell (220) is a lower peripheral surface, and the upper peripheral surface and the lower peripheral surface are symmetrically arranged relative to the interface.
11. An electrically powered valve characterised in that, The electric valve comprises the coil assembly of any one of claims 1 to 10.