Coil assembly, solenoid valve, refrigeration device, and automobile

Abstract

The utility model discloses a coil assembly, solenoid valve, refrigeration plant and car relates to solenoid valve technical field, the coil assembly includes: coil part, and the magnetically permeable body, the magnetically permeable body includes the first magnetic conduction part and the second magnetic conduction part of interval arrangement, the first magnetic conduction part with the second magnetic conduction part forms the installation space, the coil part is located the installation space, at least partial corner position of the first magnetic conduction part and / or the second magnetic conduction part is equipped with camber surface, the camber surface is located the external portion of the circumference of the coil part, the vertical distance of camber surface to the outer circumference of the coil part is L, 0 millimeter < L <= 0.5 millimeter. The utility model discloses the technical scheme, has reduced the volume of magnetically permeable body.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve technology, and in particular to a coil assembly, a solenoid valve, a refrigeration device, and an automobile. Background Technology

[0002] In automotive refrigeration systems, various control valves are widely used to precisely control the flow and on / off of refrigerant (i.e., the medium), enabling system start-up and shutdown, and switching of operating modes under specific conditions. Solenoid valves, due to their fast response and ease of automation, have become a common actuator for controlling the flow of the medium in refrigeration pipelines.

[0003] A typical solenoid valve usually includes core components such as a coil, an armature, and a magnetic conductor. When the coil is energized, it generates a magnetic field. The magnetic lines of force form a closed magnetic circuit through the magnetic conductor, driving the armature to move, thereby opening or closing the valve.

[0004] However, due to the structural design of traditional magnetic conductors, the overall size is large, which occupies a lot of space, limits the flexibility of the vehicle layout, and increases material costs. Utility Model Content

[0005] The main objective of this invention is to provide a coil assembly, a solenoid valve, a refrigeration device, and an automobile, aiming to solve at least one of the aforementioned technical problems.

[0006] To achieve the above objectives, this utility model provides a coil assembly, which includes:

[0007] Coil components; and

[0008] A magnetic conductor, comprising a first magnetic conductor and a second magnetic conductor spaced apart, forming an installation space between the first magnetic conductor and the second magnetic conductor, wherein a coil component is disposed in the installation space, and at least a portion of the corner positions of the first magnetic conductor and / or the second magnetic conductor are provided with arc surfaces, the arc surfaces being located outside the circumferential surface of the coil component, and the vertical distance from the arc surfaces to the outer circumferential surface of the coil component being L, where 0 mm < L ≤ 0.5 mm.

[0009] The technical solution of this application, by providing arc surfaces at at least some corner positions of the first magnetically conductive part and / or the second magnetically conductive part, is equivalent to cutting off a portion of the right-angle corner. This reduces the volume of the magnetically conductive body while still protecting the coil components, thereby reducing the overall volume of the coil assembly and the solenoid valve. Furthermore, with a size of 0 mm < L ≤ 0.5 mm, the space occupied by the magnetically conductive body is minimized while ensuring safe installation of the coil components, further improving the structural compactness of the entire coil assembly and reducing its footprint. Simultaneously, the reduction in the volume of the magnetically conductive body directly reduces the amount of material used, lowering material costs. In addition, the arc surface structure optimizes the magnetic circuit distribution, making the magnetic flux distribution more uniform and smooth, reducing eddy current losses and hysteresis losses, and improving the overall working efficiency and stability of the solenoid valve.

[0010] In one embodiment, the magnetic conductor further includes a third magnetic conductor connecting the first magnetic conductor and the second magnetic conductor. The first magnetic conductor has a first pair of side surfaces and a first adjacent side surface. The first pair of side surfaces and the third magnetic conductor are disposed opposite to each other, and the first adjacent side surface connects the first pair of side surfaces and the third magnetic conductor.

[0011] The second magnetically conductive part has a second pair of side surfaces and a second adjacent side surface. The second pair of side surfaces and the third magnetically conductive part are disposed opposite to each other. The second adjacent side surface connects the second pair of side surfaces and the third magnetically conductive part.

[0012] Wherein, the corner positions of the first pair of side surfaces and the first adjacent side surfaces are configured as the arc surfaces; and / or, the corner positions of the second pair of side surfaces and the second adjacent side surfaces are configured as the arc surfaces.

[0013] To achieve the above objectives, this utility model provides a coil assembly, which includes:

[0014] Coil components; and

[0015] A magnetic conductor includes a first magnetic conductor, a second magnetic conductor, and a third magnetic conductor connecting the first magnetic conductor and the second magnetic conductor. An installation space is formed between the first magnetic conductor and the second magnetic conductor. A coil component is disposed in the installation space. At least a portion of the corners of the first magnetic conductor and / or the second magnetic conductor are provided with arc surfaces. The arc surfaces are located outside the circumference of the coil component. The opposite sides of the third magnetic conductor are provided with extension portions.

[0016] The technical solution of this application, by providing arc surfaces at at least some corner positions of the first magnetically conductive part and / or the second magnetically conductive part, is equivalent to cutting off a portion of the right-angle corner. This reduces the volume of the magnetically conductive body while ensuring magnetic conductivity and heat dissipation performance, thereby reducing the volume of the entire coil assembly and solenoid valve. Furthermore, the third magnetically conductive part has protruding extensions on its opposite sides, which increases the volume of some areas of the third magnetically conductive part to meet the label adhesion requirements. Compared to increasing the overall size of the third magnetically conductive part, the volume of the magnetically conductive body can be reduced while still meeting label adhesion requirements, thereby reducing the volume of the entire coil assembly and solenoid valve.

[0017] In one embodiment, the extension is trapezoidal in shape;

[0018] And / or, the extension and the third magnetically conductive portion are on the same plane;

[0019] And / or, along the axial direction, the extension is disposed between the first magnetically conductive portion and the second magnetically conductive portion;

[0020] And / or, along the axial direction, the extension is disposed at the middle of the third magnetically conductive part.

[0021] In one embodiment, the first magnetically conductive portion has a first pair of side surfaces and a first adjacent side surface, the first pair of side surfaces and the third magnetically conductive portion are disposed opposite to each other, and the first adjacent side surface connects the first pair of side surfaces and the third magnetically conductive portion;

[0022] The second magnetically conductive part has a second pair of side surfaces and a second adjacent side surface. The second pair of side surfaces and the third magnetically conductive part are disposed opposite to each other. The second adjacent side surface connects the second pair of side surfaces and the third magnetically conductive part.

[0023] Wherein, the corner positions of the first pair of side surfaces and the second adjacent side surfaces are configured as the arc surfaces; and / or, the corner positions of the second pair of side surfaces and the second adjacent side surfaces are configured as the arc surfaces.

[0024] In one embodiment, the coil component includes a winding and a plastic-coated part disposed outside the winding. The plastic-coated part is coated around the outer periphery of the winding, and the arc surface is located outside the plastic-coated part. A first positioning part is provided on the outer periphery of the plastic-coated part. A second magnetic conductive part is provided with a second positioning part, and the first positioning part and the second positioning part cooperate with each other.

[0025] In one embodiment, one of the first positioning portion and the second positioning portion is configured as a protrusion, and the other of the first positioning portion and the second positioning portion is configured as a notch.

[0026] In one embodiment, the outer periphery of the plastic-coated part is provided with an outward protrusion, and the injection hole mark of the plastic-coated part and the outward protrusion are arranged opposite to each other.

[0027] In one embodiment, the protrusion is arranged in an arc shape.

[0028] In one embodiment, the first magnetic conductive part is provided with a third positioning part, which protrudes from the surface of the first magnetic conductive part facing away from the mounting space.

[0029] In one embodiment, the magnetic conductor further includes an extension portion connected to the first magnetic conductor portion, and the extension portion and the first magnetic conductor portion are coplanarly disposed, and the extension portion is provided with a positioning hole.

[0030] In one embodiment, a plane parallel to the first magnetic conductive part is used as the projection plane, and the projections of the positioning hole on the projection plane and the projections of the arc surface on the second magnetic conductive part on the projection plane are staggered and do not overlap.

[0031] In one embodiment, the distance between the first magnetic part and the second magnetic part is S, and the axial length of the coil component is H, where 0mm < H < 0.3mm.

[0032] In one embodiment, the first magnetically conductive part has a first mounting side, and the third magnetically conductive part has a third mounting side connected to the first mounting side; in the extending direction of the first mounting side, the length of the third mounting side is less than the length of the first mounting side.

[0033] And / or, the second magnetic part has a second mounting side, and the third magnetic part has a fourth mounting side connected to the second mounting side; in the extending direction of the second mounting side, the length of the fourth mounting side is less than the length of the second mounting side.

[0034] To achieve the above objectives, this utility model provides an electromagnetic valve, which includes a valve body and the coil assembly described above. The coil assembly is disposed in the valve body, and the first magnetic conductive part and the third magnetic conductive part are provided with mounting holes for mounting the valve body.

[0035] To achieve the above objectives, this utility model provides a refrigeration device, which includes a refrigeration pipeline and the solenoid valve described above, wherein the solenoid valve is disposed in the refrigeration pipeline.

[0036] To achieve the above objectives, this utility model provides an automobile that includes the refrigeration equipment described above. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of the magnetic conductor in an embodiment of the coil assembly of this utility model;

[0039] Figure 2 This is another structural schematic diagram of the magnetic conductor in an embodiment of the coil assembly of this utility model;

[0040] Figure 3 This is a schematic diagram of an angle structure of an embodiment of the coil assembly of this utility model;

[0041] Figure 4 This is a side view of the magnetic conductor in an embodiment of the coil assembly of this utility model.

[0042] Figure 5 This is a schematic diagram of another angle of the coil assembly embodiment of this utility model;

[0043] Figure 6 This is a cross-sectional structural diagram of an embodiment of the coil assembly of this utility model.

[0044] Explanation of icon numbers:

[0045] 110. Winding; 120. Frame; 130. Pin; 200. Plastic-coated part; 210. Outward protrusion; 220. Winding covering part; 230. Terminal covering part; 300. Magnetic conductor; 310. First magnetic conductor part; 311. First pair of side surfaces; 312. First adjacent side surface; 320. Second magnetic conductor part; 321. Second pair of side surfaces; 322. Second adjacent side surface; 330. Third magnetic conductor part; 331. Extension part; 340. Arc surface; 350. Outer extension part; 351. Positioning hole; 410. First positioning part; 420. Second positioning part; 430. Third positioning part.

[0046] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of the present utility model.

[0048] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0049] Furthermore, in the embodiments of this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of the embodiments of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0051] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by the embodiments of this utility model.

[0052] In automotive refrigeration systems, various control valves are widely used to precisely control the flow and on / off of refrigerant (i.e., the medium), enabling system start-up and shutdown, flow regulation, and switching of operating modes under specific conditions. Solenoid valves, due to their advantages such as fast response, high control precision, and ease of automation, have become a common actuator for controlling the flow of the medium in refrigeration pipelines.

[0053] A typical solenoid valve usually includes core components such as a coil, an armature, and a magnetic conductor. When the coil is energized, it generates a magnetic field. The magnetic lines of force form a closed magnetic circuit through the magnetic conductor, driving the armature to move, thereby opening or closing the valve.

[0054] However, in the traditional design of magnetic conductors, the overall size of the magnetic conductor is relatively large due to considerations of protecting the coil components and facilitating labeling. This takes up a lot of space, limits the flexibility of the overall vehicle layout, and also increases material costs.

[0055] In view of this, the present invention provides a coil assembly, a solenoid valve, a refrigeration device, and an automobile. By providing an arc surface at at least part of the corner positions of the first magnetic part and / or the second magnetic part, it is equivalent to cutting off a part of the right-angle corner. This reduces the volume of the magnetic material while ensuring the protection of the coil components, thereby reducing the overall volume of the coil assembly and the solenoid valve.

[0056] To better understand the above technical solution, the following detailed explanation is provided in conjunction with the accompanying drawings.

[0057] like Figure 1 , Figure 2 as well as Figure 6 As shown in the figure, this utility model embodiment proposes a coil assembly, the coil assembly comprising:

[0058] A coil component, the coil component including a winding 110 and a plastic coating 200 covering the outside of the winding 110; and

[0059] A magnetic conductor 300 includes a first magnetic conductor 310 and a second magnetic conductor 320 spaced apart, forming a mounting space between them. The coil component is disposed within this mounting space, which allows for mounting and at least partially covers the coil component, thus protecting it. The first magnetic conductor 310 and the second magnetic conductor 320 are made of a soft magnetic metal material with good magnetic and thermal conductivity, providing a magnetic path for the coil component. At least a portion of the corners of the first magnetic conductor 310 and / or the second magnetic conductor 320 are provided with an arc surface 340, located outside the circumference of the coil component, i.e., outside the circumference of the plastic-coated part 200. This reduces the volume of the magnetic conductor 300 while still protecting the coil component, thereby reducing the overall volume of the coil assembly and the solenoid valve. Optionally, an arc surface 340 can be provided at the corner of the first magnetically conductive part 310, and an arc surface 340 can also be provided at the corner of the second magnetically conductive part 320. Alternatively, arc surfaces 340 can be provided at both the corners of the first magnetically conductive part 310 and the corners of the second magnetically conductive part 320. The vertical distance from the arc surface 340 to the outer peripheral surface of the coil component is L, where 0 mm < L ≤ 0.5 mm. Optionally, L can be 0.1 mm, 0.15 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, etc., and is not limited here.

[0060] In the technical solution adopted in this embodiment, by providing an arc surface 340 at at least part of the corner positions of the first magnetically conductive part 310 and / or the second magnetically conductive part 320, it is equivalent to cutting off a portion of the right-angle corner. This reduces the volume of the magnetically conductive body 300 while meeting the requirements for magnetic conductivity and heat dissipation, thereby reducing the overall volume of the coil assembly and the solenoid valve. Moreover, with a size of 0 mm < L ≤ 0.5 mm, the space occupied by the magnetically conductive body 300 can be compressed to the maximum extent while ensuring safe installation of the coil components, further improving the structural compactness of the entire coil assembly and reducing the space occupied. At the same time, the reduction in the volume of the magnetically conductive body 300 directly reduces the amount of material used and lowers material costs. In addition, the arc surface 340 structure can optimize the magnetic circuit distribution, making the magnetic flux distribution more uniform and smooth, reducing eddy current losses and hysteresis losses, and improving the overall working efficiency and stability of the solenoid valve.

[0061] In one embodiment, refer to Figures 1 to 3 The magnetic conductor 300 also includes a third magnetic conductor 330 that connects the first magnetic conductor 310 and the second magnetic conductor 320. That is, the installation space is formed by the three magnetic conductors. Compared with the common four-sided magnetic conductor 300, it saves one side of the magnetic conductor 300 while meeting the installation and use functions, which can save materials and simplify the production process.

[0062] The first magnetically conductive part 310 has a first pair of side surfaces 311 and a first adjacent side surface 312. The first pair of side surfaces 311 and the third magnetically conductive part 330 are disposed opposite to each other, and the first adjacent side surface 312 connects the first pair of side surfaces 311 and the third magnetically conductive part 330. The second magnetically conductive part 320 has a second pair of side surfaces 321 and a second adjacent side surface 322. The second pair of side surfaces 321 and the third magnetically conductive part 330 are disposed opposite to each other, and the second adjacent side surface 322 connects the second pair of side surfaces 321 and the third magnetically conductive part 330.

[0063] Wherein, the corner positions of the first pair of side surfaces 311 and the first adjacent side surface 312 are configured as the arc surface 340, and it is understood that the first pair of side surfaces 311 and the first adjacent side surface 312 are connected by the arc surface 340; and / or, the corner positions of the second pair of side surfaces 321 and the second adjacent side surface 322 are configured as the arc surface 340, and it is understood that the second pair of side surfaces 321 and the second adjacent side surface 322 are connected by the arc surface 340.

[0064] In this embodiment, the arc surface 340 is located at the corner of the first pair of side surfaces 311 and the first adjacent side surface 312, and / or the arc surface 340 is located at the corner of the second pair of side surfaces 321 and the second adjacent side surface 322. In this way, the contact area of ​​the first magnetic conductive part 310 and the second magnetic conductive part 320 can be guaranteed, the structural strength of the magnetic conductor 300 can be improved, and the continuity and uniformity of the magnetic circuit in the magnetic conductor 300 can be improved.

[0065] In one embodiment, the distance between the first magnetic part 310 and the second magnetic part 320 is S, and the axial length of the coil component is H, where 0mm < H < 0.3mm. In this way, the coil component can be clamped while being easy to install.

[0066] To achieve the above objectives, this utility model provides a coil assembly, referring to... Figure 1 , Figure 2 , Figure 4 as well as Figure 6 The coil assembly includes:

[0067] A coil component, the coil component including a winding 110 and a plastic coating 200 covering the outside of the winding 110; and

[0068] A magnetic conductor 300 includes a first magnetic conductor 310, a second magnetic conductor 320 spaced apart, and a third magnetic conductor 330 connecting the first magnetic conductor 310 and the second magnetic conductor 320. An installation space is formed between the first magnetic conductor 310 and the second magnetic conductor 320, and the coil component is disposed in the installation space. That is, the installation space is formed by three magnetic conductors. Compared to the common four-sided structure of the magnetic conductor 300, this saves one side of the magnetic conductor 300 while still meeting installation and usage requirements, thus saving materials and simplifying the manufacturing process. At least a portion of the corners of the first magnetic conductor 310 and / or the second magnetic conductor 320 are provided with arc surfaces 340, located outside the circumference of the coil component. The opposite sides of the third magnetic conductor 330 are provided with protruding extensions 331.

[0069] In the technical solution adopted in this embodiment, by providing arc surfaces 340 at at least some corner positions of the first magnetically conductive part 310 and / or the second magnetically conductive part 320, it is equivalent to cutting off a portion of the right-angle corner. This reduces the volume of the magnetically conductive body 300 while meeting the requirements for magnetic conductivity and heat dissipation, thereby reducing the volume of the entire coil assembly and solenoid valve. Furthermore, the third magnetically conductive part 330 has protruding extensions 331 on its opposite sides, which increases the volume of a portion of the third magnetically conductive part 330 to meet the needs of label adhesion. Compared to increasing the overall size of the third magnetically conductive part 330, the volume of the magnetically conductive body 300 can be reduced while still meeting the label adhesion requirements, thereby reducing the volume of the entire coil assembly and solenoid valve. Optionally, the extensions 331 and the third magnetically conductive body 300 are integrally formed, thus ensuring the overall structural strength.

[0070] Alternatively, the extension 331 can be square in shape.

[0071] Furthermore, the extension 331 is trapezoidal in shape, which maximizes the label pasting area while minimizing the overall volume;

[0072] And / or, the extension 331 and the third magnetic part 330 are on the same plane, so that the extension 331 only protrudes from the side of the third magnetic part 330, avoiding the extension 331 from protruding towards or away from the mounting space, and further reducing the overall volume of the coil assembly;

[0073] And / or, along the axial direction, the extension 331 is disposed between the first magnetically conductive part 310 and the second magnetically conductive part 320, thereby reducing the axial dimension and thus reducing the overall volume of the coil assembly;

[0074] And / or, along the axial direction, the extension 331 is disposed in the middle of the third magnetically conductive part 330. This effectively optimizes the magnetic circuit structure, making the magnetic flux distribution more uniform, reducing magnetic reluctance concentration, and thus improving the overall magnetic conductivity. Simultaneously, it helps enhance the symmetry and stability of the magnetic circuit, reduces leakage magnetic loss, and improves working performance and energy efficiency.

[0075] In one embodiment, refer to Figure 1 and Figure 2 The first magnetically conductive part 310 has a first pair of side surfaces 311 and a first adjacent side surface 312. The first pair of side surfaces 311 and the third magnetically conductive part 330 are disposed opposite to each other. The first adjacent side surface 312 connects the first pair of side surfaces 311 and the third magnetically conductive part 330.

[0076] The second magnetically conductive part 320 has a second pair of side surfaces 321 and a second adjacent side surface 322. The second pair of side surfaces 321 and the third magnetically conductive part 330 are disposed opposite to each other. The second adjacent side surface 322 connects the second pair of side surfaces 321 and the third magnetically conductive part 330.

[0077] Wherein, the corner positions of the first pair of side surfaces 311 and the first adjacent side surface 312 are configured as the arc surface 340, and it is understood that the first pair of side surfaces 311 and the first adjacent side surface 312 are connected by the arc surface 340; and / or, the corner positions of the second pair of side surfaces 321 and the second adjacent side surface 322 are configured as the arc surface 340, and it is understood that the second pair of side surfaces 321 and the second adjacent side surface 322 are connected by the arc surface 340.

[0078] In this embodiment, the arc surface 340 is located at the corner of the first pair of side surfaces 311 and the first adjacent side surface 312, and / or the arc surface 340 is located at the corner of the second pair of side surfaces 321 and the second adjacent side surface 322. In this way, the contact area of ​​the first magnetic conductive part 310 and the second magnetic conductive part 320 can be guaranteed, the structural strength of the magnetic conductor 300 can be improved, and the continuity and uniformity of the magnetic circuit in the magnetic conductor 300 can be improved.

[0079] In one embodiment, refer to Figures 1 to 3 The coil component includes a winding 110 and a plastic-coated component 200 covering the outside of the winding 110. The plastic-coated component 200 covers the outer periphery of the winding 110, thus protecting the entire winding 110. A first positioning portion 410 is provided on the outer periphery of the plastic-coated component 200; a second positioning portion 420 is provided on the second magnetic conductive portion 320, and the first positioning portion 410 and the second positioning portion 420 cooperate. Thus, through the cooperation of the first positioning portion 410 and the second positioning portion 420, the coil component can be positioned during installation on the magnetic conductive body 300, improving installation accuracy.

[0080] In one embodiment, one of the first positioning part 410 and the second positioning part 420 is configured as a protrusion, and the other of the first positioning part 410 and the second positioning part 420 is configured as a notch. In this way, the protrusion and the notch can be directly integrated into the component body without the need for additional independent positioning components or additional positioning space, resulting in a simpler structure, more convenient operation, and reduced occupation of external space.

[0081] In one embodiment, refer to Figure 5 The outer periphery of the plastic-coated part 200 is provided with an outward protrusion 210, and the injection hole mark of the plastic-coated part 200 and the outward protrusion 210 are arranged opposite to each other.

[0082] Specifically, the protrusion 210 is formed during the injection molding process together with the plastic-coated part 200. The plastic-coated part 200 has an injection port mark, which is formed after injection molding. That is, after the molten plastic flows into the mold cavity from the gating port, a visible injection port mark will be formed at the position corresponding to the gating port after injection molding. The injection port mark and the protrusion 210 are arranged opposite to each other. It can be understood that by optimizing the mold cavity and setting the protrusion on the side opposite to the gating port, space can be reserved for the protrusion of the winding 110. When the molten plastic flows into the mold cavity from the gating port, even if the winding 110 protrudes away from the gating port under the flow of molten plastic, the mold cavity can still accommodate enough molten plastic because it is already set on the side opposite to the gating port. Thus, after injection molding, the protrusion 210 is formed, ensuring that the wall thickness on the side opposite to the gating port meets the preset requirements, better covering the winding 110, and preventing the winding 110 from being exposed due to excessively thin walls.

[0083] In one embodiment, refer to Figure 6 The coil component further includes a frame 120 and a pin 130 connected to the winding 110, with the winding 110 wound around the frame 120. The frame 120 is used to mount and fix the winding 110, and the pin 130 is connected to an external power source to supply power to the winding 110 in the coil component.

[0084] The plastic-coated part 200 includes an integrally injection-molded winding cover 220 and a terminal cover 230. The winding cover 220 covers the outside of the winding 110, the terminal cover 230 is disposed outside the pin 130, the protrusion 210 is disposed on the outer periphery of the winding cover 220, and the arc surface 340 is located outside the winding cover 220. It is understood that the terminal cover 230 can provide protection for the pin 130, while the winding cover 220 can protect the winding 110.

[0085] Optionally, the outer peripheral surface of the terminal covering portion 230 is provided with holes. In this way, the wall thickness of the terminal covering portion 230 can be controlled, ensuring the strength of the terminal covering portion 230 while preventing excessive material thickness in some areas during injection molding, which could lead to poor venting. This reduces the number of pores generated during injection molding, improves molding quality, and also achieves the goals of material saving and weight reduction.

[0086] In one embodiment, the protruding portion 210 is arc-shaped. On one hand, the arc-shaped protruding portion 210 can cover the area where the winding 110 may protrude with minimal volume increase, thereby minimizing the use of injection molding material, reducing material redundancy and waste, and lowering production costs while increasing the wall thickness of the local area of ​​the plastic-coated part 200. On the other hand, the arc surface 340 has good demolding performance, which can reduce the frictional resistance between the plastic part and the mold during the mold opening process and improve the smoothness of demolding.

[0087] In one embodiment, refer to Figure 1 and Figure 5 The first magnetically conductive part 310 is provided with a third positioning part 430, which protrudes from the surface of the first magnetically conductive part 310 facing away from the mounting space. This allows for positioning during assembly with the valve body. Specifically, the valve body is provided with a positioning structure that mates with the third positioning part 430.

[0088] In one embodiment, refer to Figure 2 and Figure 3 The magnetic conductor 300 further includes an extension portion 350 connected to the first magnetic conductor portion 310, and the extension portion 350 and the first magnetic conductor portion 310 are coplanarly disposed. The extension portion 350 is provided with a positioning hole 351. It can be understood that the extension portion 350 protrudes from the side of the first magnetic conductor portion 310 and is coplanar with it. Compared with the existing downward-folding positioning structure, it eliminates the need for a bending process, resulting in a simpler structure, reduced material usage, and lower production costs. Specifically, the positioning hole 351 is a threaded hole that can be used with screws to fix the valve body and the first magnetic conductor portion 310 together.

[0089] Optionally, the projection plane is a plane parallel to the first magnetic conductive part 310, that is, the projection plane, the first magnetic conductive part 310 and the second magnetic conductive part 320 are parallel to each other, and the projection of the positioning hole 351 on the projection plane and the projection of the arc surface 340 on the second magnetic conductive part 320 on the projection plane are staggered and do not coincide. In this way, the screw can be avoided, which makes it convenient to install the screw along the axial direction of the coil component and lock the first magnetic conductive part 310 and the valve body.

[0090] In one embodiment, the first magnetically conductive part 310 has a first mounting side, and the third magnetically conductive part 330 has a third mounting side connected to the first mounting side; in the extending direction of the first mounting side, the length A31 of the third mounting side is less than the length A1 of the first mounting side. Thus, while ensuring magnetic conductivity, reducing the size of the third magnetically conductive part 330 is beneficial to reducing material costs, reducing the overall volume of the coil assembly, and improving the heat dissipation effect of the coil component.

[0091] And / or, the second magnetic conductive part 320 has a second mounting side, and the third magnetic conductive part 330 has a fourth mounting side connected to the second mounting side; in the extending direction of the second mounting side, the length A32 of the fourth mounting side is less than the length A2 of the second mounting side. In this way, while ensuring the magnetic conductive performance, reducing the size of the third magnetic conductive part 330 is beneficial to reducing material costs, reducing the overall volume of the coil assembly, and improving the heat dissipation effect of the coil component.

[0092] To achieve the above objectives, this utility model provides a solenoid valve, which includes a valve body and the aforementioned coil assembly. The coil assembly is disposed on the valve body, and the first magnetic conductive part and the second magnetic conductive part are provided with mounting holes for mounting the valve body. Specifically, the specific structure of the coil assembly is as described in the above embodiments. Since this solenoid valve adopts all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0093] A solenoid valve generally includes a valve body and a coil assembly. The valve body includes a valve cover, valve seat, piston assembly, housing, moving iron core assembly, and stationary iron core assembly. The valve seat has a valve port. The valve cover and valve seat are connected to form a valve cavity. The piston assembly is slidably disposed in the valve cavity. The housing, moving iron core, and stationary iron core are assembled together and fixed to the valve cover. The coil assembly is sleeved on the stationary iron core assembly. When the coil assembly is energized, it magnetizes the stationary iron core. When the coil assembly is de-energized, it demagnetizes the stationary iron core. Through the energization and de-energization of the coil assembly, the stationary iron core can drive the moving iron core to reciprocate under the action of the magnetic field. The reciprocating movement of the moving iron core can drive the piston assembly to reciprocate axially in the valve cavity. The reciprocating movement of the piston assembly can close and open the valve port. When the piston assembly opens the valve port, the solenoid valve is in the connected state. When the piston assembly closes the valve port, the solenoid valve is in the disconnected state.

[0094] To achieve the above objectives, this utility model provides a refrigeration device, which includes a refrigeration pipeline and the aforementioned solenoid valve, wherein the solenoid valve is disposed in the refrigeration pipeline. It is understood that the solenoid valve can control the flow of the medium in the refrigeration pipeline. Specifically, the specific structure of the solenoid valve is as described in the above embodiments. Since this refrigeration device adopts all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0095] To achieve the above objectives, this utility model provides an automobile comprising the aforementioned refrigeration equipment. Specifically, the automobile can be a new energy vehicle or a conventional gasoline-powered vehicle. The new energy vehicle can be a pure electric vehicle with an electric motor as the primary driving force, or a hybrid electric vehicle with both an internal combustion engine and an electric motor as primary driving forces. Specifically, the specific structure of the refrigeration equipment is as described in the above embodiments. Since this automobile adopts all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon further here.

[0096] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model embodiments. Any equivalent structural transformations made under the technical concept of the present utility model using the description and drawings of the present utility model embodiments, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model embodiments.

Claims

1. A coil assembly, characterized in that, The coil assembly includes: Coil components; and A magnetic conductor, comprising a first magnetic conductor and a second magnetic conductor spaced apart, forming an installation space between the first magnetic conductor and the second magnetic conductor, wherein a coil component is disposed in the installation space, and at least a portion of the corner positions of the first magnetic conductor and / or the second magnetic conductor are provided with arc surfaces, the arc surfaces being located outside the circumferential surface of the coil component, and the vertical distance from the arc surfaces to the outer circumferential surface of the coil component being L, where 0 mm < L ≤ 0.5 mm.

2. The coil assembly as claimed in claim 1, characterized in that, The magnetic conductor further includes a third magnetic conductor connecting the first magnetic conductor and the second magnetic conductor. The first magnetic conductor has a first pair of side surfaces and a first adjacent side surface. The first pair of side surfaces and the third magnetic conductor are disposed opposite to each other. The first adjacent side surface connects the first pair of side surfaces and the third magnetic conductor. The second magnetically conductive part has a second pair of side surfaces and a second adjacent side surface. The second pair of side surfaces and the third magnetically conductive part are disposed opposite to each other. The second adjacent side surface connects the second pair of side surfaces and the third magnetically conductive part. Wherein, the corner positions of the first pair of side surfaces and the first adjacent side surfaces are configured as the arc surfaces; and / or, the corner positions of the second pair of side surfaces and the second adjacent side surfaces are configured as the arc surfaces.

3. A coil assembly, characterized in that, The coil assembly includes: Coil components; and A magnetic conductor includes a first magnetic conductor, a second magnetic conductor, and a third magnetic conductor connecting the first magnetic conductor and the second magnetic conductor. An installation space is formed between the first magnetic conductor and the second magnetic conductor. A coil component is disposed in the installation space. At least a portion of the corners of the first magnetic conductor and / or the second magnetic conductor are provided with arc surfaces. The arc surfaces are located outside the circumference of the coil component. The opposite sides of the third magnetic conductor are provided with extension portions.

4. The coil assembly as claimed in claim 3, characterized in that, The extension is trapezoidal in shape; And / or, the extension and the third magnetically conductive portion are on the same plane; And / or, along the axial direction, the extension is disposed between the first magnetically conductive portion and the second magnetically conductive portion; And / or, along the axial direction, the extension is disposed at the middle of the third magnetically conductive part.

5. The coil assembly as claimed in claim 3, characterized in that, The first magnetically conductive part has a first pair of side surfaces and a first adjacent side surface. The first pair of side surfaces and the third magnetically conductive part are disposed opposite to each other. The first adjacent side surface connects the first pair of side surfaces and the third magnetically conductive part. The second magnetically conductive part has a second pair of side surfaces and a second adjacent side surface. The second pair of side surfaces and the third magnetically conductive part are disposed opposite to each other. The second adjacent side surface connects the second pair of side surfaces and the third magnetically conductive part. Wherein, the corner positions of the first pair of side surfaces and the second adjacent side surfaces are configured as the arc surfaces; and / or, the corner positions of the second pair of side surfaces and the second adjacent side surfaces are configured as the arc surfaces.

6. The coil assembly as claimed in claim 3, characterized in that, The coil component includes a winding and a plastic-coated part disposed outside the winding. The plastic-coated part is coated on the outer periphery of the winding. The arc surface is located outside the plastic-coated part. A first positioning part is provided on the outer periphery of the plastic-coated part. A second magnetic conductive part is provided with a second positioning part. The first positioning part and the second positioning part cooperate with each other.

7. The coil assembly as claimed in claim 6, characterized in that, One of the first positioning part and the second positioning part is configured as a protrusion, and the other of the first positioning part and the second positioning part is configured as a notch.

8. The coil assembly as claimed in claim 7, characterized in that, The outer periphery of the plastic-coated part is provided with an outward protrusion, and the injection hole mark of the plastic-coated part is arranged opposite to the outward protrusion.

9. The coil assembly as claimed in claim 8, characterized in that, The protruding part is arc-shaped.

10. The coil assembly as claimed in claim 3, characterized in that, The first magnetic conductive part is provided with a third positioning part, which protrudes from the surface of the first magnetic conductive part facing away from the mounting space.

11. The coil assembly as claimed in claim 3, characterized in that, The magnetic conductor further includes an extension portion connected to the first magnetic conductor portion, and the extension portion and the first magnetic conductor portion are coplanarly disposed, and the extension portion is provided with a positioning hole.

12. The coil assembly as claimed in claim 11, characterized in that, Using a plane parallel to the first magnetic conductive part as the projection plane, the projections of the positioning hole on the projection plane and the projections of the arc surface on the second magnetic conductive part on the projection plane are staggered and do not overlap.

13. The coil assembly as claimed in claim 3, characterized in that, The distance between the first magnetic conductive part and the second magnetic conductive part is S, and the axial length of the coil component is H, where 0mm < H < 0.3mm.

14. The coil assembly as claimed in claim 3, characterized in that, The first magnetic conductive part has a first mounting side, and the third magnetic conductive part has a third mounting side connected to the first mounting side; in the extending direction of the first mounting side, the length of the third mounting side is less than the length of the first mounting side. And / or, the second magnetic part has a second mounting side, and the third magnetic part has a fourth mounting side connected to the second mounting side; in the extending direction of the second mounting side, the length of the fourth mounting side is less than the length of the second mounting side.

15. A solenoid valve, characterized in that, The solenoid valve includes a valve body and a coil assembly as described in any one of claims 1 to 14, the coil assembly being disposed in the valve body, and the first magnetic conductive part and the second magnetic conductive part being provided with mounting holes for mounting the valve body.

16. A refrigeration device, characterized in that, The refrigeration equipment includes refrigeration piping and a solenoid valve as described in claim 15, wherein the solenoid valve is disposed in the refrigeration piping.

17. A car, characterized in that, The vehicle includes the refrigeration equipment as described in claim 16.

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