A three-phase inductance structure that is easy to assemble

Abstract

This utility model discloses a three-phase inductor structure that is easy to assemble, comprising: a toroidal core assembly; three sets of coils, each set of coils being wound around the annular wall of the toroidal core assembly and spaced apart circumferentially, with leads at both ends of each set of coils; and a base plate disposed at one axial end of the toroidal core assembly, the base plate having at least six through holes, the six through holes being spaced apart circumferentially along the toroidal core assembly and corresponding to the outer ring side of the toroidal core assembly, the six through holes being arranged in pairs, with the two through holes in each pair being for the leads at both ends of each set of coils to pass through. This three-phase inductor structure effectively reduces the assembly complexity of the leads, reduces the requirements for tooling equipment, and facilitates adhesive dispensing, thereby improving inductor production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of inductors, and more particularly to a three-phase inductor structure that is easy to assemble. Background Technology

[0002] An inductor is a component that can convert electrical energy into magnetic energy and store it. The two ends of the coil need to be de-coated and then soldered to form leads. The de-coating area includes the area on the lower half of the base plate and a part of the upper half of the base plate. Current technical requirements are that the solder on the leads on the upper half of the base plate must be completely covered with glue.

[0003] Currently, the lead holes for three-phase inductors on the market are located on the inner and outer rings of the toroidal core assembly. During assembly, the six leads need to be arranged so that they are parallel to each other and perpendicular to the base plate. When threading and fixing the leads with glue, the elasticity of the leads makes them difficult to fix. The operating space and field of vision for the threading holes on the inner ring of the toroidal core assembly are limited. This internal and external insertion installation structure makes it difficult to adjust and assemble the inner leads, requiring high-quality tooling and fixtures. It is very easy to scratch or break the base plate during production, affecting the efficiency of inductor assembly. Moreover, it is difficult to fully cover the solder of the three inner leads on the upper half of the base plate with glue during glue application. This is inconvenient for glue application and for observing whether the glue is completely applied. Utility Model Content

[0004] The purpose of this invention is to disclose a three-phase inductor structure that is easy to assemble, effectively reducing the assembly complexity of the leads, reducing the requirements for tooling equipment, and facilitating dispensing, thereby improving the inductor production efficiency.

[0005] To achieve the above objectives, this utility model discloses a three-phase inductor structure that is easy to assemble, comprising:

[0006] Toroidal core assembly;

[0007] Three sets of coils are wound around the ring wall of the toroidal iron core assembly and distributed at intervals around the circumference of the toroidal iron core assembly. Each set of coils has leads at both ends.

[0008] The base plate is located at one axial end of the toroidal core assembly. The base plate has at least six wire holes. The six wire holes are distributed circumferentially around the toroidal core assembly and correspond to the outer ring side of the toroidal core assembly. The six wire holes are arranged in pairs, and the two wire holes in each pair are used for the lead wires at both ends of each coil to pass through.

[0009] As an alternative implementation, the six wire holes are evenly positioned on a circumference centered on the center of the annular core assembly, and the diameter of this circumference is larger than the outer ring diameter of the annular core assembly.

[0010] As an alternative implementation, the base plate is circular and coaxially arranged with the annular iron core assembly. The outer edge of the base plate has three notches, which are spaced apart in the circumferential direction of the base plate. Each notch is located between two wire holes in each group.

[0011] As an optional implementation, the diameter of the base plate is larger than the outer ring diameter of the annular core assembly, the notch is arc-shaped, and the diameter of the inner arc of the notch is larger than the inner ring diameter of the annular core assembly and smaller than the outer ring diameter of the annular core assembly.

[0012] As an alternative implementation, the edges of the notch are rounded.

[0013] As an alternative implementation, a partition is also included, which is arranged inside the toroidal core assembly, separating the three sets of coils one by one.

[0014] As an alternative implementation, the partition consists of three panels arranged at an angle to each other, which divide the inner ring side of the toroidal core assembly into three winding regions, with each group of coils located in one winding region.

[0015] As an alternative implementation, each panel is arranged perpendicular to the base plate, and the three panels are connected to form a Y-shaped structure, with each panel having an angle of 120° with the other two adjacent panels.

[0016] As an alternative implementation, a locking foot is provided on the side of the panel near the base plate, extending between the base plate and the annular core assembly.

[0017] As an optional implementation, a through-hole venting groove is provided on the base plate, which connects to the inner ring space of the annular iron core assembly.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] The three-phase inductor structure of this invention features six through holes spaced circumferentially along the toroidal core assembly, each corresponding to a position on the outer ring side of the assembly. This means all through holes are located on the periphery, enabling fully peripheral insertion assembly. This facilitates coil lead adjustment, reduces assembly complexity, and also simplifies dispensing, improving dispensing efficiency and thus increasing inductor production efficiency. Other beneficial effects are illustrated in the specific embodiments. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments 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 these drawings without creative effort.

[0021] Figure 1 This is an exploded structural diagram of the three-phase inductor structure of this utility model;

[0022] Figure 2 This is a three-dimensional structural diagram of the three-phase inductor structure of this utility model;

[0023] Figure 3 This is a top view schematic diagram of the three-phase inductor structure of this utility model;

[0024] Figure 4 yes Figure 3 The axial cross-section of AA is shown.

[0025] Explanation of key figure labels:

[0026] 1. Partition; 101. Panel; 102. Clip; 103. Partition glue application; 2. Annular iron core assembly; 3. Coil; 301. Lead wire glue application; 302. Lead wire; 4. Base plate; 401. Wire hole; 402. Vent groove; 403. Notch. Detailed Implementation

[0027] 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 present utility model.

[0028] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0029] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0030] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0031] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0032] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0033] Please see Figures 1 to 2 This application provides a three-phase inductor structure that is easy to assemble, including: a partition 1, a toroidal core assembly 2, a coil 3, and a base plate 4. The base plate 4 is circular, and its diameter is larger than the outer diameter of the toroidal core assembly 2. The partition 1, the toroidal core assembly 2, and the base plate 4 are coaxially arranged. It is understood that, depending on the overall design requirements, the base plate 4 can also be square, rectangular, or other polygonal shapes; this embodiment uses a circular base plate 4 for illustration.

[0034] There are three sets of coils 3. The three sets of coils 3 are wound on the ring wall of the toroidal iron core assembly 2 and are distributed at intervals in the circumference of the toroidal iron core assembly 2. Preferably, the three sets of coils 3 are evenly distributed. The two ends of each coil 3 are soldered after the varnish is removed to form leads 302. The leads 302 located on the inner ring side of the toroidal iron core assembly 2 are bent to the outer ring side of the toroidal iron core assembly 2. The partition 1 is arranged inside the toroidal iron core assembly 2. The partition 1 separates the three sets of coils 3 one by one to avoid adjacent coils 3 being too close or even in contact, which would cause their varnish (i.e., insulation layer) to be broken down and cause a short circuit, thus ensuring the safe electrical isolation of each coil 3.

[0035] The base plate 4 is located at one axial end of the toroidal core assembly 2. The base plate 4 has six through holes 401 and a through venting groove 402. The six through holes 401 are spaced apart circumferentially along the toroidal core assembly 2 and correspond to the outer ring side of the toroidal core assembly 2. The six through holes 401 are arranged in pairs, with each pair of through holes 401 supplying the two ends of each coil 3, ensuring that adjacent leads 302 are spaced apart. The venting groove 402 connects to the inner ring space of the toroidal core assembly 2, facilitating the discharge of gases generated during wave soldering of the inductor on the PCB board, thus improving the assembly pass rate of the inductor and the PCB board. Therefore, the shape and size of the venting groove 402 can be flexibly adjusted to ensure that the venting requirements are met. Of course, more through holes 401 can be provided as needed for backup.

[0036] In the above scheme, six through holes 401 are distributed circumferentially along the annular core assembly 2 and correspond to the outer ring side of the annular core assembly 2. That is, all through holes 401 are set on the periphery. During assembly, the lead wire 302 at the inner ring side of the coil 3 is slightly wrapped to the outer ring side and bent downward, so that all leads 302 can be well aligned with the through holes 401 for insertion, realizing full periphery insertion assembly. This facilitates the adjustment of the leads 302 of the coil 3 and reduces the assembly complexity. Moreover, when applying glue to the leads 302 at both ends of all coil 3, it is relatively convenient to apply glue from the outer ring side and observe. After the glue cures, it forms lead glue 301, which ensures that the solder of the leads 302 located in the upper half of the base plate 4 is fully covered with glue, which facilitates the glue application operation, improves glue application efficiency, and improves the overall inductor production efficiency.

[0037] In this embodiment, the six wire holes 401 are evenly distributed on the circumference centered on the center of the annular core assembly 2, meaning that adjacent wire holes 401 form a 120° angle. This eliminates the restriction on the installation position of the coils 3; any two adjacent wire holes 401 can be selected when installing the first group of coils 3. Of course, in other embodiments, depending on the size of the annular core assembly 2 and the number of turns of the coils 3, the angle between the two wire holes 401 in each group can be set as needed, for example, a 150° angle.

[0038] See Figure 3 In this embodiment, the diameter of the circumference where the six wire holes 401 are located is larger than the outer ring diameter of the annular iron core assembly 2, so that the wire holes 401 are located on the outer side of the outer ring of the annular iron core assembly 2, which further facilitates wire drilling and gluing.

[0039] Of course, in other embodiments, the diameter of the circumference where the six wire holes 401 are located may also be equal to or slightly smaller than the outer ring diameter of the annular core assembly 2.

[0040] See Figures 2 to 4In this embodiment, to better distinguish the installation position of the coil 3 and further facilitate glue application, three notches 403 are provided at intervals on the outer edge of the base plate 4. The three notches 403 are distributed at intervals on the circumference of the base plate 4, preferably at 120° intervals. Preferably, the notches 403 are arc-shaped, and each edge of the notch 403 is rounded to avoid stress concentration that could cause the base plate 4 to break under stress. The diameter of the inner arc of the notch 403 is larger than the inner ring diameter of the annular core assembly 2 and smaller than the outer ring diameter of the annular core assembly 2. The diameter of the ring side allows the base plate 4 to provide support for the coil 3 and the toroidal core assembly 2 at the notch 403; when the base plate 4 is a non-circular shape, the three notches 403 are circumferentially spaced at an angle of 120° with the center of the toroidal core assembly 2 as the center; each notch 403 is located between the two wire holes 401 of each group, that is, the position of the notch 403 corresponds to the position of the coil 3, the notch 403 is located below the coil 3, and the leads 302 at both ends of the coil 3 are located on both sides of the notch 403.

[0041] In the above scheme, based on the setting of notch 403, when installing the base plate 4, each group of coils 3 corresponds to one notch 403, so that the lead wires 302 at both ends of the coil 3 are respectively passed into different wire holes 401 on both sides of the notch 403, thereby overcoming the problem that the installation position of the coil 3 is not easy to accurately determine when the six wire holes 401 are not evenly distributed; on the other hand, notch 403 also facilitates the adjustment and gluing of lead wires 302. After the lead wires 302 are passed through the holes, the lead wires 302 are fixed with glue at the wire holes 401 on the side close to the coil 3 through notch 403. Notch 403 can further provide better operating space and field of vision for the glue dispensing process.

[0042] See Figure 1 , Figure 2 and Figure 4 In this embodiment, the partition 1 consists of three panels 101 arranged at an angle to each other. Each panel 101 is perpendicular to the base plate 4. The three panels 101 are connected to form a Y-shaped structure. The angle between each panel 101 and the other two adjacent panels 101 is 120°, forming a triangular structure. Each panel 101 has a locking foot 102 on the side closest to the base plate 4. The locking foot 102 extends between the base plate 4 and the annular iron core assembly 2, thereby facilitating the positioning and fixing of the partition 1 and making the base plate 4 more stable. The plate 4 and the toroidal core assembly 2 maintain a fixed gap to avoid pressing the coil 3 in extreme cases. Preferably, the side of each panel 101 away from the base plate 4 is also fixed to the toroidal core assembly 2 by a partition glue 103, so that the partition 1 will not rotate relative to the toroidal core assembly 2 after assembly. The three panels 101 divide the inner ring side of the toroidal core assembly 2 into three winding areas, and each group of coils 3 is located in one winding area. In this way, the three groups of coils 3 can be isolated, blocking the mutual contact between different coils 3 and avoiding the generation of electric arc.

[0043] Understandably, depending on the number of coils in different coils 3 or the required space, the angle between the three panels 101 can be set to be unequal as needed to meet the design requirements.

[0044] The above provides a detailed description of an easy-to-assemble three-phase inductor structure disclosed in the embodiments of this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the fresh air module and fresh air air conditioner of this utility model and their core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A three-phase inductive structure for ease of assembly, characterized in that, include: Annular core assembly (2); Three sets of coils (3) are wound on the ring wall of the annular iron core assembly (2) and distributed at intervals in the circumference of the annular iron core assembly (2). Each set of coils (3) is provided with leads (302) at both ends. A base plate (4) is provided at one axial end of the annular core assembly (2). The base plate (4) is provided with at least six wire holes (401). The six wire holes (401) are distributed circumferentially along the annular core assembly (2) and correspond to the outer ring side of the annular core assembly (2). The six wire holes (401) are arranged in pairs. The two wire holes (401) in each pair are respectively used for the lead wires (302) at both ends of each coil (3) to pass through.

2. The three-phase inductive structure for ease of assembly of claim 1, wherein, The six wire holes (401) are evenly located on a circumference centered on the center of the annular core assembly (2), and the diameter of the circumference is greater than the outer ring diameter of the annular core assembly (2).

3. The three-phase inductive structure for ease of assembly of claim 1, wherein, The base plate (4) is circular and coaxially arranged with the annular iron core assembly (2). The outer edge of the base plate (4) is provided with three notches (403). The three notches (403) are distributed at intervals in the circumferential direction of the base plate (4), and each notch (403) is located between the two wire holes (401) in each group.

4. The three-phase inductive structure for ease of assembly of claim 3, wherein, The diameter of the base plate (4) is greater than the outer ring diameter of the annular core assembly (2), the notch (403) is arc-shaped, and the diameter of the inner arc of the notch (403) is greater than the inner ring diameter of the annular core assembly (2) and smaller than the outer ring diameter of the annular core assembly (2).

5. The three-phase inductive structure for ease of assembly of claim 3, wherein, The notch (403) has rounded corners at its edges.

6. The easily assembled three-phase inductive structure according to any one of claims 1 to 5, characterized in that, It also includes a partition (1) arranged inside the annular core assembly (2), which separates the three sets of coils (3) one by one.

7. The three-phase inductive structure for ease of assembly of claim 6, wherein, The partition (1) consists of three panels (101) arranged at an angle to each other. The three panels (101) divide the inner ring side of the annular core assembly (2) into three winding regions, and each group of coils (3) is located in one of the winding regions.

8. The three-phase inductive structure for ease of assembly of claim 7, wherein, Each of the panels (101) is arranged perpendicularly to the base plate (4), and the three panels (101) are connected to form a Y-shaped structure. The angle between each panel (101) and the other two adjacent panels (101) is 120°.

9. The three-phase inductive structure for ease of assembly of claim 7, wherein, The panel (101) is provided with a locking foot (102) on the side near the base plate (4), and the locking foot (102) extends between the base plate (4) and the annular iron core assembly (2).

10. The easily assembled three-phase inductive structure according to any one of claims 1 to 5, characterized in that, The base plate (4) is provided with a through exhaust groove (402), which is connected to the inner ring space of the annular iron core assembly (2).

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