Coil component

Abstract

The utility model provides a coil component, which comprises a coil structure provided with a contact pin; the wire assembly is connected with the coil structure; the sealing structure is used for encapsulating the electric connection position of the contact pin and the wire assembly; the end, away from the coil structure, of the sealing structure is provided with a combination leading-out face, the wire assembly penetrates through the combination leading-out face, and the combination leading-out face is not perpendicular to the length direction of the wire assembly. According to the scheme, the wire assembly is connected with the coil structure, and the sealing structure encapsulates the connection position of the wire assembly and the contact pin of the coil structure so as to achieve sealing. The combination leading-out surface is arranged at one end, far away from the coil structure, of the sealing structure and is not perpendicular to the length direction of the wire assembly, so that the connection position of the combination leading-out surface and the wire assembly is not prone to water accumulation, and water inflow failure of the coil component caused by water accumulation of the combination leading-out surface is avoided. According to the scheme, the problem that the electronic expansion valve fails due to water seepage at the joint of the sealing structure of the coil component and the wire assembly is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic expansion valves, in particular to a coil component. Background Art

[0002] The connection position of the coil structure and the wire of the electronic expansion valve is encapsulated by a sealing structure. The materials used in the sealing structure are inconsistent with the materials of the wire assembly, resulting in different thermal expansion coefficients of the sealing structure and the wire assembly. During the operation of the coil component of the electronic expansion valve, as the temperature changes, the materials of the wire assembly and the sealing structure shrink or stretch. Due to the different thermal expansion coefficients, the different shrinkage or stretching deformations cause tearing stress, resulting in a decrease in the bonding strength between the wire assembly and the sealing structure. When there is water accumulation at the connection position between the sealing structure and the wire assembly, it will penetrate into the sealing structure along the bonding position after the bonding strength between the wire assembly and the sealing structure decreases, causing the performance of the coil component to fail. Utility Model Content

[0003] The utility model provides a coil component to solve the problem of water seepage at the connection between the sealing structure of the coil component and the wire assembly in the prior art leading to failure of the electronic expansion valve.

[0004] In order to solve the above problems, the utility model provides a coil component, including:

[0005] A coil structure with a pin;

[0006] A wire assembly connected to the coil structure;

[0007] A sealing structure, the sealing structure encapsulates the electrical connection position between the pin and the wire assembly;

[0008] One end of the sealing structure away from the coil structure is provided with a combined lead-out surface, the wire assembly passes through the combined lead-out surface, and the combined lead-out surface is not perpendicular to the length direction of the wire assembly.

[0009] Furthermore, the combined lead-out surface includes an outer convex surface, one end of the wire assembly close to the coil structure is a first end, the other end of the wire assembly is a second end, and the outer convex surface protrudes in a direction away from the first end.

[0010] Furthermore, the outer convex surface includes an outer convex bevel, which is inclined relative to the radial surface of the wire assembly, the side of the outer convex bevel close to the wire assembly is the inner circle, and the side of the outer convex bevel away from the wire assembly is the outer circle, and the distance between the inner circle and the first end is greater than the distance between the outer circle and the first end.

[0011] Further, the angle between the outer convex inclined surface and the radial surface of the wire assembly is θ, and 0°<θ≤45°.

[0012] Further, the outer convex surface includes an outer convex arc surface, and the curvature of the outer convex arc surface is convex in a direction away from the first end.

[0013] Furthermore, the combined lead-out surface includes an inner concave surface, an end of the wire assembly close to the coil structure is a first end, and the inner concave surface is recessed toward the first end.

[0014] Furthermore, the side wall of the concave surface is a concave inclined surface, which is inclined relative to the radial surface of the wire assembly. The side of the concave inclined surface close to the wire assembly is the inner circle, and the side of the concave inclined surface away from the wire assembly is the outer circle. The distance between the inner circle and the first end is smaller than the distance between the outer circle and the first end.

[0015] Furthermore, the side wall of the inner concave surface is an inner concave arc surface, and the inner concave arc surface is recessed toward the sealing structure.

[0016] Furthermore, the wire assembly includes a plurality of wires and an insulating shell encapsulating the outside of the wires, the plurality of wires are arranged side by side, and the cross section of the insulating shell is a flat tube.

[0017] Furthermore, the wire assembly includes a plurality of wires and an insulating shell sleeved on the outside of the wires, and the cross section of the insulating shell is circular.

[0018] By applying the technical solution of the utility model, a coil component is provided, including: a coil structure having a pin; a wire assembly, the wire assembly is connected to the coil structure; a sealing structure, the sealing structure encapsulates the electrical connection position between the pin and the wire assembly; the sealing structure has a connecting lead surface at one end away from the coil structure, the wire assembly passes through the connecting lead surface, and the connecting lead surface is not perpendicular to the length direction of the wire assembly. With this solution, the wire assembly is connected to the coil structure, and the sealing structure encapsulates the connection position between the wire assembly and the pin of the coil structure to achieve sealing. The connecting lead surface is arranged at one end of the sealing structure away from the coil structure, and the connecting lead surface is not perpendicular to the length direction of the wire assembly, so that the connection position between the connecting lead surface and the wire assembly is not easy to accumulate water, thereby avoiding water ingress and failure of the coil component due to water ingress. Through this solution, the problem of water seepage at the connection between the sealing structure of the coil component and the wire assembly, which causes failure of the electronic expansion valve, is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 A schematic structural diagram of a coil component provided in the first embodiment of the present utility model is shown;

[0021] Figure 2 Shows Figure 1A cross-sectional view of a coil component in FIG.

[0022] Figure 3 Shows Figure 2 A local enlarged view of point A in FIG.

[0023] Figure 4 A schematic structural diagram of a coil component provided in the second embodiment of the present utility model is shown;

[0024] Figure 5 Shows Figure 4 A local enlarged view of point B in FIG.

[0025] Figure 6 The structure diagram of the coil component provided in the third embodiment of the present utility model is shown;

[0026] Figure 7 Shows Figure 6 A local enlarged view of point C in FIG.

[0027] Figure 8 The structure diagram of the coil component provided in the fourth embodiment of the present utility model is shown;

[0028] Fig. 9 Shows Figure 8 A local enlarged view of D in FIG.

[0029] Fig.10 The schematic diagram of the structure of the coil component provided in the fifth embodiment of the present utility model is shown.

[0030] The above drawings include the following reference numerals:

[0031] 10. Wire assembly;

[0032] 20. Sealing structure;

[0033] 30. Combine the lead-out surface;

[0034] 31. External convex slope;

[0035] 32. Convex curved surface;

[0036] 33. Inner concave surface; 331. Inner concave inclined surface; 332. Inner concave arc surface;

[0037] 40. Connector. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0039] like Figures 1 to 10 As shown, an embodiment of the utility model provides a coil component, comprising:

[0040] A coil structure with a pin;

[0041] A conductor assembly 10, the conductor assembly 10 is connected to the coil structure;

[0042] A sealing structure 20, the sealing structure 20 encapsulates the electrical connection position between the pin and the wire assembly 10;

[0043] The sealing structure 20 has a connecting lead-out surface 30 at one end away from the coil structure. The wire assembly 10 passes through the connecting lead-out surface 30 . The connecting lead-out surface 30 is not perpendicular to the length direction of the wire assembly 10 .

[0044] With this solution, the wire assembly 10 is connected to the coil structure, and the sealing structure 20 encapsulates the connection position of the wire assembly 10 and the pin of the coil structure to achieve sealing. The combined lead-out surface 30 is arranged at the end of the sealing structure 20 away from the coil structure, and the length direction of the combined lead-out surface 30 and the wire assembly 10 is not perpendicular, so that the connection position of the combined lead-out surface 30 and the wire assembly 10 is not easy to accumulate water, and the water accumulation of the combined lead-out surface 30 causes the coil component to fail due to water ingress. Through this solution, the problem of water seepage at the connection between the sealing structure 20 of the coil component and the wire assembly 10 causing the electronic expansion valve to fail is solved.

[0045] like Figures 1 to 5 As shown, the combined lead-out surface 30 includes an outer convex surface, one end of the wire assembly 10 close to the coil structure is the first end, the other end of the wire assembly 10 is the second end, and the outer convex surface protrudes in a direction away from the first end.

[0046] In this way, when the wire assembly 10 is arranged on the upward side of the sealing structure 20, the outer convex surface protrudes toward the first end, so that the outer convex surface is not perpendicular to the length direction of the wire assembly 10, and water can slide down along the outer convex surface, and water is not easy to accumulate at the connection position between the outer convex surface and the wire assembly 10. When the wire assembly 10 is arranged on the downward side of the sealing structure 20, water flows down along the wire assembly 10 under the action of gravity, and is not easy to accumulate at the connection position between the outer convex surface and the wire assembly 10.

[0047] like Figure 2 and Figure 3 As shown, in the first embodiment of the present invention, the outer convex surface includes an outer convex bevel 31, which is inclined relative to the radial surface of the wire assembly 10, and the side of the outer convex bevel 31 close to the wire assembly 10 is the inner circle, and the side of the outer convex bevel 31 away from the wire assembly 10 is the outer circle, and the distance between the inner circle and the first end is greater than the distance between the outer circle and the first end.

[0048] In this way, the outer convex inclined surface 31 is inclined relative to the radial surface of the wire assembly 10, so that water can flow down the outer convex inclined surface 31 and is not easy to accumulate at the connection position between the outer convex inclined surface 31 and the wire assembly 10. The distance between the inner circle and the first end is greater than the distance between the outer circle and the first end, so that the outer convex inclined surface 31 is a conical surface, and water is not easy to accumulate on the outer convex inclined surface 31.

[0049] Furthermore, in the first embodiment of the present invention, the angle between the outer convex inclined surface 31 and the radial surface of the wire assembly 10 is θ, and 0°<θ≤45°.

[0050] In this way, setting θ between 0° and 45° can ensure the effect of preventing water accumulation and the strength of the end of the sealing structure 20 away from the coil structure. The larger the angle between the outer convex bevel 31 and the radial surface of the wire assembly 10, the steeper the outer convex bevel 31, and the better the effect of preventing water accumulation, but it will cause the end of the sealing structure 20 away from the coil structure to become thinner, and the strength of the outer convex bevel 31 will be reduced. Setting 0°<θ≤45° can prevent water accumulation on the outer convex bevel 31 while ensuring the strength of the end of the sealing structure 20 away from the coil structure.

[0051] like Figure 4 and Figure 5 As shown, in the second embodiment of the present invention, the outer convex surface includes an outer convex arc surface 32, and the curvature of the outer convex arc surface 32 is convex toward a direction away from the first end.

[0052] With such a configuration, the curvature of the convex curved surface 32 bulges away from the first end, so that water can flow down along the curvature of the convex curved surface 32, and water is not easily accumulated at the connection position between the convex curved surface 32 and the wire assembly 10, thereby achieving the purpose of preventing water accumulation and preventing water from flowing into the connection position between the coil structure and the wire assembly, causing the electronic expansion valve to fail.

[0053] During operation, the coil component of the electronic expansion valve causes the materials of the wire assembly 10 and the sealing structure 20 to shrink or stretch as the temperature changes. The wire assembly 10 and the sealing structure 20 are made of different materials. Due to the different thermal expansion coefficients of the different materials, the shrinkage or stretching deformation is different, resulting in tearing stress. In the first and second embodiments of the utility model, the setting of the outer convex surface reduces the thickness of the end of the sealing structure 20 away from the coil structure, so that the tearing stress is relatively small, and it is not easy to cause the connection between the sealing structure 20 and the wire assembly 10 to fail, thereby reducing the possibility of water infiltration from the sealing structure 20 and the wire assembly 10 to cause the electronic expansion valve to fail.

[0054] like Figures 6 to 9 As shown, the combined lead-out surface 30 includes an inner concave surface 33 , an end of the wire assembly 10 close to the coil structure is a first end, and the inner concave surface 33 is recessed toward the first end.

[0055] After the electronic expansion valve is installed at the client, if the extension direction of the wire assembly 10 from the sealing structure 20 is vertically downward after installation, the inner concave surface 33 is used to prevent water from accumulating at the end of the sealing structure 20 away from the coil structure.

[0056] like Figure 6 and Figure 7 As shown, in the third embodiment of the present utility model, the side wall of the inner concave surface 33 is an inner concave inclined surface 331, the inner concave inclined surface 331 is inclined relative to the radial surface of the wire assembly 10, the side of the inner concave inclined surface 331 close to the wire assembly 10 is the inner circle, and the side of the inner concave inclined surface 331 away from the wire assembly 10 is the outer circle, and the distance between the inner circle and the first end is smaller than the distance between the outer circle and the first end.

[0057] With such arrangement, after the electronic expansion valve is installed on the client, when the extension direction of the wire assembly 10 from the sealing structure 20 is biased to vertically downward, water can flow down along the concave slope 331, and is not easy to accumulate at the connection position between the concave slope 331 and the wire assembly 10, thereby preventing water from entering the sealing structure 20 from the connection position between the sealing structure 20 and the wire assembly 10, causing the performance failure of the electronic expansion valve. The distance between the inner circle and the first end is smaller than the distance between the outer circle and the first end, so that the concave slope 331 is concave inward, and when the electronic expansion valve is installed, the direction in which the wire assembly 10 is led out of the sealing structure 20 is biased to vertically downward, so that when the wire assembly 10 is arranged on the downward side of the sealing structure 20, water is not easy to accumulate in the depression.

[0058] like Figure 8 and Fig. 9 As shown, in the fourth embodiment of the present utility model, the side wall of the inner concave surface 33 is an inner concave arc surface 332 , and the inner concave arc surface 332 is concave toward the sealing structure 20 .

[0059] With such arrangement, when the direction in which the wire assembly 10 is led out of the sealing structure 20 after the electronic expansion valve is installed is biased toward vertically downward, so that the wire assembly 10 is arranged on the downward side of the sealing structure 20, water can flow down along the curvature of the concave arc surface 332, making it difficult for water to accumulate on the concave arc surface 332, thereby preventing water from entering the sealing structure 20 from the connection position between the sealing structure 20 and the wire assembly 10, causing the performance of the electronic expansion valve to fail.

[0060] In the third and fourth embodiments of the utility model, the setting of the inner concave surface 33 reduces the thickness of the end of the sealing structure 20 away from the coil structure, making the tearing stress relatively small, and not easily causing the connection between the sealing structure 20 and the wire assembly 10 to fail, thereby reducing the possibility of water infiltrating between the sealing structure 20 and the wire assembly 10 and causing the electronic expansion valve to fail.

[0061] like Figure 1 As shown, in the first embodiment of the present invention, the conductor assembly 10 includes a plurality of conductors and an insulating shell encapsulating the outside of the conductors. The plurality of conductors are arranged side by side, and the cross section of the insulating shell is a flat tube.

[0062] In this way, multiple wires are arranged side by side, and the insulating shell encloses the multiple wires, so that the order of the multiple wires is fixed, and it is not easy to cause confusion in the order of the wires during the installation of the electronic expansion valve. In the first embodiment of the utility model, the cross section of the insulating shell is a flat tube, and the outer side of the flat tube is connected to the sealing structure 20.

[0063] like Fig.10 As shown, in the fifth embodiment of the present utility model, the wire assembly 10 includes a plurality of wires and an insulating shell sleeved on the outside of the wires, and the cross section of the insulating shell is circular.

[0064] With such arrangement, in the fifth embodiment of the present invention, the cross section of the insulating shell is circular, and the sealing structure 20 is fixedly connected to the outer side of the circular insulating shell.

[0065] One end of the wire assembly 10 is connected to the coil structure, and the other end of the wire assembly 10 is connected to the connector 40. Optionally, the connection between the wire assembly 10 and the coil structure can be achieved by connecting the coil structure and the wire assembly 10, and then injecting or pouring glue to obtain the sealing structure 20.

[0066] Optionally, after the pins of the coil structure are electrically connected to the wire assembly 10 , at least part of the coil structure components and the wire assembly 10 may be integrally injection-molded as an insert to form the sealing structure 20 .

[0067] The advantages of this solution are:

[0068] 1. The lead-out surface 30 at one end of the sealing structure 20 away from the coil structure is not perpendicular to the length direction of the wire assembly 10, so that water can flow down along the lead-out surface 30, making it difficult for water to accumulate on the lead-out surface 30, thereby preventing water from accumulating on the lead-out surface 30 at the connection position between the wire assembly 10 and the sealing structure 20 and then slowly seeping into the coil to cause a short circuit in the coil, thereby causing the performance of the electronic expansion valve to fail.

[0069] 2. The coil component of the electronic expansion valve shrinks or stretches the materials of the wire assembly 10 and the sealing structure 20 as the temperature changes during operation. The wire assembly 10 and the sealing structure 20 are made of different materials. Due to the different thermal expansion coefficients of the different materials, the shrinkage or stretching deformation is different, resulting in tearing stress. By setting the outer convex surface or the inner concave surface, the thickness of the end of the sealing structure 20 away from the coil structure becomes smaller, reducing the tearing stress caused by the deformation of the end of the sealing structure 20 away from the coil structure, slowing down the speed of the decrease in the bonding strength between the wire assembly 10 and the sealing structure 20, making the connection between the wire assembly 10 and the sealing structure 20 more secure, and not easy to crack and cause water seepage, causing the performance failure of the electronic expansion valve.

[0070] 3. The angle between the convex bevel 31 and the radial surface of the wire assembly 10 is θ, which is set to 0°<θ≤45°. The larger the angle between the convex bevel 31 and the radial surface of the wire assembly 10, the steeper the convex bevel 31, and the better the anti-water accumulation effect. However, it will cause the end of the sealing structure 20 away from the coil structure to become thinner, and the strength of the convex bevel 31 will be reduced. Setting 0°<θ≤45° can prevent the convex bevel 31 from water accumulation while ensuring the strength of the end of the sealing structure 20 away from the coil structure.

[0071] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0072] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0073] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0074] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0075] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0076] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

Claims

1. A coil component, characterized in that: include: A coil structure with a pin; A wire assembly (10), the wire assembly (10) being connected to the coil structure; A sealing structure (20), wherein the sealing structure (20) encapsulates the electrical connection position between the plug pin and the wire assembly (10); The sealing structure (20) has a combined lead-out surface (30) at one end away from the coil structure, the wire assembly (10) passes through the combined lead-out surface (30), and the combined lead-out surface (30) is not perpendicular to the length direction of the wire assembly (10).

2. The coil component according to claim 1, characterized in that The combined lead-out surface (30) comprises an outer convex surface, one end of the wire assembly (10) close to the coil structure is a first end, the other end of the wire assembly (10) is a second end, and the outer convex surface protrudes in a direction away from the first end.

3. The coil component according to claim 2, characterized in that The outer convex surface comprises an outer convex inclined surface (31), the outer convex inclined surface (31) is inclined relative to the radial surface of the wire assembly (10), the side of the outer convex inclined surface (31) close to the wire assembly (10) is an inner circle, the side of the outer convex inclined surface (31) away from the wire assembly (10) is an outer circle, and the distance between the inner circle and the first end is greater than the distance between the outer circle and the first end.

4. The coil component according to claim 3, characterized in that The angle between the outer convex inclined surface (31) and the radial surface of the wire assembly (10) is θ, and 0°<θ≤45°.

5. The coil component according to claim 2, characterized in that: The outer convex surface comprises an outer convex arc surface (32), and the curvature of the outer convex arc surface (32) is convex in a direction away from the first end.

6. The coil component according to claim 1, characterized in that The combined lead-out surface (30) comprises an inner concave surface (33), an end of the wire assembly (10) close to the coil structure is a first end, and the inner concave surface (33) is recessed in the direction of the first end.

7. The coil component according to claim 6, characterized in that The side wall of the inner concave surface (33) is an inner concave inclined surface (331), the inner concave inclined surface (331) is inclined relative to the radial surface of the wire assembly (10), the side of the inner concave inclined surface (331) close to the wire assembly (10) is an inner circle, and the side of the inner concave inclined surface (331) away from the wire assembly (10) is an outer circle, and the distance between the inner circle and the first end is smaller than the distance between the outer circle and the first end.

8. The coil component according to claim 6, characterized in that The side wall of the inner concave surface (33) is an inner concave arc surface (332), and the inner concave arc surface (332) is concave in the direction of the sealing structure (20).

9. The coil component according to claim 1, characterized in that: The conductor assembly (10) comprises a plurality of conductors and an insulating shell encapsulating the outside of the conductors, the plurality of conductors are arranged side by side, and the cross section of the insulating shell is a flat tube.

10. The coil component according to claim 1, characterized in that The conductor assembly (10) comprises a plurality of conductors and an insulating shell sleeved on the outside of the conductors, wherein the cross section of the insulating shell is circular.

Images