Transformer and combined framework applied to same

Abstract

The utility model provides a transformer and a combined framework. The combined framework comprises a first part and a second part, wherein the interiors of the first part and the second part are communicated; the first component is provided with a first assembling part and a first blocking piece part, and the first blocking piece part is formed by extending wall parts of at least two positions of the first end of the first assembling part outwards. The second component is provided with a second assembling part and a second blocking piece part; the second blocking piece part is formed by outwards extending wall parts at at least two positions of the first end of the second assembling part; the second end of the first assembling part is matched and butted with the second end of the second assembling part, so that the first blocking piece part and the second blocking piece part are opposite at an interval, and an assembling hole for assembling a magnetic core is jointly formed in the first assembling part and the second assembling part; the first blocking piece part and the second blocking piece part are respectively provided with a first PIN and a second PIN; the combined framework is applied to the transformer, the problem of direct assembly of multiple circles of integrally-formed copper strips can be solved, and the assembly difficulty of the copper strips is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to transformer equipment technical field especially, relates to a transformer and combined skeleton applied to it. BACKGROUND

[0002] People's demand for switching power supply power is rising, and the transformer as the key device of switching power supply is mainly composed of skeleton, primary winding, secondary winding, primary pin and secondary pin, and its structure and performance also need to be improved, especially in the application of low-voltage large current, copper strip has been used to replace the multi-strand wire as the winding of the transformer, the copper strip is relatively thin, the use of copper strip can reduce the volume of the transformer, the copper strip has excellent electrical conductivity, which can reduce the energy loss of the transformer, the copper strip has high short-circuit strength, which helps to improve the safety performance of the transformer, the copper strip has good thermal conductivity, which helps to dissipate heat during the operation of the transformer, and the use of copper strip can reduce the maintenance workload of the transformer and simplify the daily maintenance work.

[0003] However, the skeleton of the existing transformer is not convenient for assembling the copper strip: manual winding of the copper strip is inconvenient, generally a machine is directly formed, but if the number of turns of the copper strip exceeds one turn, the blocking piece at both ends of the skeleton of the transformer will limit the installation of the copper strip, and the blocking piece at both ends of the skeleton is used to fix the winding part of the transformer as a whole and increase the safety distance, such as increasing the distance of the winding to the magnetic core and increasing the distance of the primary / secondary winding, therefore, the blocking piece at both ends of the skeleton cannot be cancelled; that is, the existing transformer skeleton cannot directly install the copper strip of multiple turns integrally formed, which leads to difficult assembly of the transformer and reduces the assembly efficiency. SUMMARY

[0004] The utility model aims at least to solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a transformer and a combined skeleton applied to it, which applies the combined skeleton, can solve the problem of direct assembly of the copper strip of multiple turns integrally formed, reduce the assembly difficulty of the copper strip, and improve the assembly efficiency of the transformer.

[0005] In a first aspect, the embodiments of the present application provide a combined skeleton, comprising a first component and a second component, both of which are internally through; the first component has a first assembly part and a first blocking part, the first blocking part is formed by extending the wall part of at least two positions of the first end of the first assembly part outward; the second component has a second assembly part and a second blocking part, the second blocking part is formed by extending the wall part of at least two positions of the first end of the second assembly part outward; the second end of the first assembly part and the second end of the second assembly part are matched and connected, so that the first blocking part and the second blocking part are spaced apart, the interior of the first assembly part and the interior of the second assembly part jointly form an assembly hole for assembling a magnetic core, the first assembly part is used for assembling a copper strip or the first assembly part and the second assembly part are jointly used for assembling a copper strip; and the first PIN pin and the second PIN pin are respectively arranged on the first blocking part and the second blocking part.

[0006] Further, the second end of the first assembly part and the second end of the second assembly part are inserted and matched; or, the second end of the first assembly part and the second end of the second assembly part are threadedly connected; or, at least two positions of the inner side wall of the port of the second end of the first assembly part are formed with first protrusions, at least two positions of the outer side wall of the second end of the second assembly part are formed with second protrusions, the second protrusions make the shape contour of the second end of the second assembly part and the shape of the port of the second end of the first assembly part adapt to each other, the second end of the second assembly part is connected to the inside of the port of the second end of the first assembly part, and the first protrusions are connected between the second protrusions and the second blocking part, so as to realize the butt joint of the first assembly part and the second assembly part.

[0007] Further, the first protrusions are symmetrical about the axial direction of the first assembly part; correspondingly, the second protrusions are also symmetrical about the axial direction of the first assembly part.

[0008] Further, two first protrusions are formed on the inner side wall of the port of the second end of the first assembly part; correspondingly, two second protrusions are formed on the outer side wall of the second end of the second assembly part.

[0009] Further, when the first assembly part and the second assembly part are butted, the first protrusions and the second protrusions, the first protrusions and the second blocking part, the port side edge of the second end of the first assembly part and the second blocking part, and the second protrusions and the inner side wall of the second end of the first assembly part form a frictional contact.

[0010] Further, when the first assembly part and the second assembly part are butted, the second protrusion on the outer sidewall of the second assembly part abuts the inner sidewall of the second end of the first assembly part, and the ratio of the outer diameter of the second end of the second assembly part at a position other than the second protrusion to the inner diameter of the second end of the first assembly part is 2:3.

[0011] Further, the first assembly part forms a first projection pattern with respect to a plane, the first blocking piece part forms a second projection pattern with respect to the plane, the second projection pattern completely covers the first projection pattern, and the second blocking piece part forms a pattern with respect to the plane, and the pattern coincides with the second projection pattern; wherein the plane is perpendicular to the axial direction of the first assembly part.

[0012] Further, a plurality of wall parts on the first blocking piece part extend in a direction perpendicular to the axial direction of the first assembly part to form a plurality of first PIN pins, a plurality of wall parts on the second blocking piece part extend in a direction perpendicular to the axial direction of the first assembly part to form a plurality of second PIN pins, and the spacing between the first PIN pins is the same as the spacing between the second PIN pins.

[0013] Further, a position on the first blocking piece part opposite to the first PIN pin is formed with a relief circular arc surface, and a position on the second blocking piece part opposite to the second PIN pin is also formed with a relief circular arc surface.

[0014] In a second aspect, the embodiments of the present application further provide a transformer, which comprises the combined framework as described in the first aspect and a copper band, the copper band has a plurality of turns, the copper band is sleeved on the outer periphery of the first assembly part or the copper band is sleeved on the outer periphery of the first assembly part and the second assembly part, and the copper band is located between the first blocking piece part and the second blocking piece part.

[0015] The present application provides a transformer and a combined framework applied to the transformer, compared with the prior art, the beneficial effects of the present application are as follows:

[0016] The combined skeleton comprises a first part and a second part, both of which are internally through, the first part has a first assembly part and a first blocking part, the first blocking part is formed by extending the wall part of the first end of the first assembly part outward at least two positions, the second part has a second assembly part and a second blocking part, the second blocking part is formed by extending the wall part of the first end of the second assembly part outward at least two positions; a plurality of integral copper strips can be assembled on the outer periphery of the first assembly part, then the second end of the first assembly part and the second end of the second assembly part are matched and connected, the first blocking part and the second blocking part are opposite and spaced, the interior of the first assembly part and the interior of the second assembly part jointly form an assembly hole, the assembly hole is used for assembling a magnetic core, the plurality of integral copper strips can be located at the outer periphery of the first assembly part or at the matched position between the first assembly part and the second assembly part; and the first blocking part and the second blocking part are respectively provided with a first PIN pin and a second PIN pin, the first PIN pin and the second PIN pin can be inserted into a PCB board to realize electrical connection.

[0017] The transformer of the present application applies the combined skeleton, and the plurality of integral copper strips can be directly assembled, so that the assembly difficulty of the copper strips is reduced, and the assembly efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic assembly view of the combined skeleton of the present application;

[0019] Figure 2 It is a schematic assembly view of the combined skeleton of the present application; Figure 1 It is a schematic assembly view of the combined skeleton of the present application;

[0020] Figure 3 It is a schematic assembly view of the combined skeleton of the present application; Figure 1 It is a schematic assembly view of the combined skeleton of the present application;

[0021] Figure 4 It is a schematic assembly view of the combined skeleton of the present application; Figure 1 It is a schematic assembly view of the combined skeleton of the present application;

[0022] Figure 5 It is a schematic assembly view of the combined skeleton of the present application;

[0023] In the drawings, the reference signs have the following meanings:

[0024] 1, first part; 11, first assembly part; 12, first blocking part; 13, first PIN pin; 14, first protrusion; 2, second part; 21, second assembly part; 22, second blocking part; 23, second PIN pin; 24, second protrusion; 3, assembly hole; 4, plane; 5, first projection figure; 6, second projection figure; 7, avoiding circular arc surface; 8, copper strip. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explaining the present application, and should not be understood as a limitation of the present application.

[0026] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, up, down, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0027] As shown in Figures 1-5 The embodiment of the present application proposes a combined skeleton in the first aspect, which comprises a first component 1 and a second component 2, both of which are internally through; the first component 1 has a first assembly part 11 and a first baffle part 12, the first baffle part 12 is formed by extending the wall part outward at least two positions of the first end of the first assembly part 11; the second component 2 has a second assembly part 21 and a second baffle part 22, the second baffle part 22 is formed by extending the wall part outward at least two positions of the first end of the second assembly part 21; the second end of the first assembly part 11 and the second end of the second assembly part 21 are matched and connected, so that the first baffle part 12 and the second baffle part 22 are spaced apart, the interior of the first assembly part 11 and the interior of the second assembly part 21 jointly form an assembly hole 3 for assembling a magnetic core, the first assembly part 11 is used for assembling a copper strip 8 or the first assembly part 11 and the second assembly part 21 are used for assembling the copper strip 8; and the first baffle part 12 and the second baffle part 22 are respectively provided with a first PIN pin 13 and a second PIN pin 23.

[0028] The embodiment of the present application further proposes a transformer in the second aspect, which comprises the combined skeleton as in the first aspect and a copper strip 8, the copper strip 8 has multiple turns, the copper strip 8 is sleeved on the outer periphery of the first assembly part 11 or the copper strip 8 is simultaneously sleeved on the outer peripheries of the first assembly part 11 and the second assembly part 21, and the copper strip 8 is located between the first baffle part 12 and the second baffle part 22.

[0029] The first part 1 and the second part 2 of the combined skeleton are both internally through, the first part 1 has a first assembly part 11 and a first blocking part 12, the first blocking part 12 is formed by extending the wall part of the first end of the first assembly part 11 outward at least two positions, the second part 2 has a second assembly part 21 and a second blocking part 22, the second blocking part 22 is formed by extending the wall part of the first end of the second assembly part 21 outward at least two positions; a plurality of turns of copper strips 8 integrally formed can be assembled on the outer periphery of the first assembly part 11, then the second end of the first assembly part 11 and the second end of the second assembly part 21 are matched and connected, the first blocking part 12 and the second blocking part 22 are spaced apart, the inside of the first assembly part 11 and the inside of the second assembly part 21 jointly form an assembly hole 3, the assembly hole 3 is used for assembling a magnetic core, the magnetic core can increase the power of the transformer, the plurality of turns of copper strips 8 integrally formed can be located at the outer periphery of the first assembly part 11 or at the matched position between the first assembly part 11 and the second assembly part 21, the copper strips 8 are relatively thin, which can reduce the volume of the transformer, the copper strips 8 have excellent electrical conductivity, which can reduce the energy loss of the transformer, the copper strips 8 have high short-circuit strength, which helps to improve the safety performance of the transformer, the copper strips 8 have good thermal conductivity, which helps to dissipate heat during the operation of the transformer, and the use of copper strips 8 can reduce the maintenance workload of the transformer; and, the first PIN pin 13 and the second PIN pin 23 are respectively arranged on the first blocking part 12 and the second blocking part 22, the first PIN pin 13 and the second PIN pin 23 can be inserted into the PCB board to realize electrical connection in the transformer and realize the corresponding circuit function.

[0030] The combined skeleton can be assembled after the copper strips 8 (windings) are wound, which does not affect the processing of the windings, while retaining the skeleton to increase the safety distance and fix the winding.

[0031] It should be noted that the present application explains the cooperation between the skeleton and the copper strips 8 and how to assemble the skeleton, and the remaining parts of the transformer, especially the transformer using the copper strips 8, are not described in the present application, and those skilled in the art can know from the structure of the transformer in the prior art, and in the present application, the remaining parts of the transformer include which structure except the skeleton and the copper strips 8.

[0032] The frame can be disassembled into two parts, and the two parts are provided with butt joint structures on both sides. When butt joint, the effect of adding a baffle at any position can be realized. At this time, the frame can be used as a separate frame and applied to the distance adjustment and position movement of the primary / secondary winding. If a separate frame exists in an LLC transformer, the separate frame increases a certain distance between the secondary winding and the primary winding to form a leakage inductance, which serves as the resonant inductor of the LLC. The two parts of the frame can be assembled at any position to realize the effect of adding a baffle at any position, play the role of isolation and fixation of the windings on both sides of the baffle, and flexibly adjust the distance and relative position of the primary / secondary.

[0033] The copper strip 8 of the present application is a machine directly integrated multi-turn copper strip 8. The inner circle of the copper strip 8 forms a circular hole. In order to avoid scratching the inner circle of the copper strip 8, the outer shape of the first assembly part 11 and the second assembly part 21 is provided to be free of edges; further, in order to adapt to the shape of the inner circle of the copper strip 8, avoid the existence of too large space between the inner circle of the copper strip 8 and the first assembly part 11 or the butt joint position of the first assembly part 11 and the second assembly part 21, and cause the displacement of the copper strip 8 along the radial direction of the first assembly part 11, the shape of the first assembly part 11 and the second assembly part 21 is preferably hollow cylindrical.

[0034] The second end of the first assembly part 11 and the second end of the second assembly part 21 can be quickly butt jointed and quickly separated. When assembling the copper strip 8, the copper strip 8 can be first sleeved on the first end of the first assembly part 11 close to the first baffle part 12, then the second end of the second assembly part 21 and the second end of the first assembly part 11 are matched and butt jointed, the copper strip 8 is located between the first baffle part 12 and the second baffle part 22, and the first PIN pin 13 of the first baffle part 12 and the second PIN pin 23 of the second baffle part 22 are inserted on the PCB circuit board, which completes the assembly of the copper strip 8.

[0035] In order to realize the quick butt joint of the second end of the first assembly part 11 and the second end of the second assembly part 21.

[0036] In some embodiments, the second end of the first assembly part 11 and the second end of the second assembly part 21 are inserted and matched. Common insertion methods in the prior art can be selected, such as setting a groove in the inside of the second end of the first assembly part 11 and setting a hook on the outer periphery of the second end of the second assembly part 21, the hook is connected in the groove, the second end of the first assembly part 11 and the second end of the second assembly part 21 are butt jointed, and the second end of the second assembly part 21 is directly inserted into the inside of the second end of the first assembly part 11, and the fastening connection is realized by friction force; other common insertion methods can also be selected, which will not be listed here.

[0037] Alternatively, the second end of the first assembly part 11 and the second end of the second assembly part 21 are threadedly connected, an inner thread can be provided inside the second end of the first assembly part 11, an outer thread can be provided on the outer periphery of the second end of the second assembly part 21, the inner thread and the outer thread are matched, the thread connection of the first assembly part 11 and the second assembly part 21 is realized, and the thread connection is stable, the first assembly part 11 is fastened in the axial direction, and since the first PIN pin 13 of the first blocking part 12 and the second PIN pin 23 of the second blocking part 22 are inserted on the PCB circuit board, this limits the rotation of the first assembly part 11 and the second assembly part 21 in the circumferential direction of the first assembly part 11, ensures the tight thread connection between the first assembly part 11 and the second assembly part 21, and the first assembly part 11 and the second assembly part 21 will not easily come off, ensuring that the transformer can work for a long time.

[0038] Alternatively, at least two positions on the inner side wall of the port of the second end of the first assembly part 11 are formed with first protrusions 14, and at least two positions on the outer side wall of the second end of the second assembly part 21 are formed with second protrusions 24. The second protrusions 24 make the outer shape contour of the second end of the second assembly part 21 match the shape of the port of the second end of the first assembly part 11, the second end of the second assembly part 21 is connected inside the port of the second end of the first assembly part 11, and the first protrusions 14 are connected between the second protrusions 24 and the second blocking part 22, realizing the butt joint of the first assembly part 11 and the second assembly part 21.

[0039] The first protrusions 14 are clamped between the second protrusions 24 and the second blocking part 22, and similarly, this can realize the fastening of the first assembly part 11 and the second assembly part 21 in the axial direction of the first assembly part 11, and since the first PIN pin 13 of the first blocking part 12 and the second PIN pin 23 of the second blocking part 22 are inserted on the PCB circuit board, this limits the rotation of the first assembly part 11 and the second assembly part 21 in the circumferential direction of the first assembly part 11, ensures that the first protrusions 14 can be tightly connected between the second protrusions 24 and the second blocking part 22, and will not easily come off, ensuring that the transformer can work for a long time.

[0040] In some embodiments, the first protrusions 14 are symmetrical about the axial direction of the first assembly part 11; correspondingly, when the first assembly part 11 and the second assembly part 21 are butt jointed together, the second protrusions 24 are also symmetrical about the axial direction of the first assembly part 11, which facilitates the butt joint of the first assembly part 11 and the second assembly part 21, and evenly distributes the butt joint force between the second end of the first assembly part 11 and the second end of the second assembly part 21, ensuring the stability of the combined skeleton structure formed after butt joint.

[0041] Specifically, two first protrusions 14 are formed on the inner side wall of the port of the second end of the first assembly part 11, and correspondingly, two second protrusions 24 are formed on the outer side wall of the second end of the second assembly part 21.

[0042] The second end of the second assembly part 21 is connected to the inside of the first assembly part 11, and is rotated 90° clockwise or counterclockwise, the first protrusion 14 can be connected between the second protrusion 24 and the second blocking part 22, the first protrusion 14 and the second protrusion 24 overlap in the axial direction of the first assembly part 11, and the assembly of the skeleton is completed.

[0043] Furthermore, when the first assembly part 11 and the second assembly part 21 are connected, the first protrusion 14 and the second protrusion 24, the first protrusion 14 and the second blocking part 22, the port side edge of the second end of the first assembly part 11 and the second blocking part 22, and the second protrusion 24 and the inner side wall of the second end of the first assembly part 11 form a frictional contact, which ensures that the first part 1 and the second part 2 are connected tightly and not loose, and further ensures that the skeleton structure is stable and can support the copper strip 8 for a long time.

[0044] In addition, the side of the first protrusion 14 and the second protrusion 24 which are close to each other when they are connected can be provided as an inclined surface, the inclined surface extends in the direction of rotation of the second end of the second assembly part 21 relative to the second end of the first assembly part 11, and the first protrusion 14 and the second protrusion 24 are connected through the inclined surface, which facilitates the rotation of the second end of the second assembly part 21 into the inside of the second end of the first assembly part 11.

[0045] The skeleton supports the copper strip 8 and other transformer related parts for a long time, in order to avoid the first protrusion 14 from falling off from between the second protrusion 24 and the second blocking part 22, the size of the first protrusion 14 and the second protrusion 24 needs to be designed to be a little larger, and at the same time, it is necessary to ensure that the inside of the second assembly part 21 has enough space to pass through the magnetic core.

[0046] In this regard, in some embodiments, when the first assembly part 11 and the second assembly part 21 are connected, the second protrusion 24 on the outer side wall of the second assembly part 21 abuts against the inner side wall of the second end of the first assembly part 11, and the ratio of the outer diameter of the second end of the second assembly part 21 at the position other than the second protrusion 24 to the inner diameter of the second end of the first assembly part 11 is 2:3.

[0047] In order to avoid the copper strip 8 from falling off from the first blocking part 12 and the second blocking part 22, the first blocking part 12 and the second blocking part 22 need to be designed to be larger relative to the first assembly part 11.

[0048] The first assembly part 11 projects orthogonally on a plane 4 to form a first projection pattern 5, the first blocking part 12 projects orthogonally on the plane 4 to form a second projection pattern 6, the second projection pattern 6 completely covers the first projection pattern 5, and the pattern formed by the second blocking part 22 projecting orthogonally on the plane 4 coincides with the second projection pattern 6; wherein the plane 4 is perpendicular to the axial direction of the first assembly part 11.

[0049] Specifically, multiple wall portions on the first blocking portion 12 extend in a direction perpendicular to the axial direction of the first assembly portion 11 to form multiple first PIN pins 13, and multiple wall portions on the second blocking portion 22 extend in a direction perpendicular to the axial direction of the first assembly portion 11 to form multiple second PIN pins 23, and the spacing between the first PIN pins 13 and the spacing between the second PIN pins 23 are the same.

[0050] The multiple first PIN pins 13 and the multiple second PIN pins 23 are arranged to facilitate electrical connection between the PCB circuit board inside the transformer and the skeleton, and realize corresponding circuit functions.

[0051] Further, the copper strip 8 is bent when wound around the first assembly portion 11 of the skeleton, and the outer contour of the copper strip 8 is in the shape of an arc, in order to adapt to the shape of the copper strip 8 and reduce the volume of the skeleton and the space occupied by the skeleton, the first blocking portion 12 of the first component 1 and the second blocking portion 22 of the second component 2 are partially cut away, and the position opposite to the first PIN pin 13 on the first blocking portion 12 is formed with an avoiding arc surface 7, and the position opposite to the second PIN pin 23 on the second blocking portion 22 is also formed with an avoiding arc surface 7, and in other embodiments, the outer contour of the position opposite to the first PIN pin 13 on the first blocking portion 12 and the position opposite to the second PIN pin 23 on the second blocking portion 22 can also be arranged in the shape of a square.

[0052] In the description of the utility model, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If it is described as first, second, it is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0053] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be understood in a broad sense, and the specific meaning of the above words in the utility model can be reasonably determined by the person skilled in the art in combination with the specific content of the technical scheme.

[0054] In the description of the utility model, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The technical means disclosed in the utility model scheme are not limited to the technical means disclosed in the above-mentioned embodiments, and also include technical schemes composed of any combination of the above technical features. It should be pointed out that, for ordinary skilled persons in the technical field, under the premise of not departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered to be within the protection scope of the utility model.

Claims

1. A modular framework, characterized in that, The first component and the second component are internally through; The first component has a first assembly part and a first blocking part, the first blocking part is formed by extending the wall of at least two positions of the first end of the first assembly part outward; The second component has a second assembly part and a second blocking part, the second blocking part is formed by extending the wall of at least two positions of the first end of the second assembly part outward; The second end of the first assembly part and the second end of the second assembly part are matched and connected, so that the first blocking part and the second blocking part are spaced apart, the interior of the first assembly part and the interior of the second assembly part jointly form an assembly hole for assembling a magnetic core, the first assembly part is used for assembling a copper strip or the first assembly part and the second assembly part are jointly used for assembling a copper strip; And, the first PIN pin and the second PIN pin are respectively arranged on the first blocking part and the second blocking part.

2. The combination framework of claim 1, wherein, The second end of the first assembly part and the second end of the second assembly part are inserted and matched; Or, the second end of the first assembly part and the second end of the second assembly part are threadedly connected; Or, at least two positions of the inner side wall of the port of the second end of the first assembly part are formed with first protrusions, at least two positions of the outer side wall of the second end of the second assembly part are formed with second protrusions, the second protrusions make the shape contour of the second end of the second assembly part and the shape of the port of the second end of the first assembly part adapt to each other, the second end of the second assembly part is connected to the inside of the port of the second end of the first assembly part, and the first protrusions are connected between the second protrusions and the second blocking part, so as to realize the butt joint of the first assembly part and the second assembly part.

3. The combination framework of claim 2, wherein, The first protrusions are symmetrical about the axial direction of the first assembly part; Correspondingly, the second protrusions are also symmetrical about the axial direction of the first assembly part.

4. The combination framework of claim 3, wherein, Two first protrusions are formed on the inner side wall of the port of the second end of the first assembly part; Correspondingly, two second protrusions are formed on the outer side wall of the second end of the second assembly part.

5. The combination framework of claim 2, wherein, When the first assembly part and the second assembly part are butted, the first protrusions and the second protrusions, the first protrusions and the second blocking part, the port side edge of the second end of the first assembly part and the second blocking part, and the second protrusions and the inner side wall of the second end of the first assembly part form a frictional contact.

6. The combination framework of claim 2, wherein, When the first assembly part and the second assembly part are butted, the second protrusions on the outer side wall of the second assembly part abut against the inner side wall of the second end of the first assembly part, and the ratio of the outer diameter of the position of the second end of the second assembly part other than the second protrusions to the inner diameter of the second end of the first assembly part is 2:

3.

7. The combination framework of claim 1, wherein, The first assembly part forms a first projection pattern in a projection on a plane, the first blocking part forms a second projection pattern in the projection on the plane, and the second projection pattern completely covers the first projection pattern; And, the pattern formed by the second blocking part in the projection on the plane coincides with the second projection pattern; Wherein, the plane is perpendicular to the axial direction of the first assembly part.

8. The combination framework of claim 1, wherein, The wall portions on the first blocking portion are extended to form a plurality of the first PIN feet in a direction perpendicular to the axial direction of the first fitting portion; The wall portions on the second blocking portion are extended to form a plurality of the second PIN feet in a direction perpendicular to the axial direction of the first fitting portion; The interval between the first PIN feet and the interval between the second PIN feet are the same.

9. The combination framework of claim 8, wherein, The first blocking portion is formed with a clearance arc surface at a position opposite to the first PIN feet, and the second blocking portion is also formed with a clearance arc surface at a position opposite to the second PIN feet.

10. A transformer, characterized by The combination skeleton as claimed in any one of claims 1-9, and a copper belt having a plurality of turns, the copper belt being sleeved on the outer periphery of the first fitting portion or the copper belt being sleeved on the outer periphery of the first fitting portion and the second fitting portion at the same time, and the copper belt being located between the first blocking portion and the second blocking portion.

Images