Electronic transformer framework and electronic transformer

Abstract

The framework body comprises a first framework body and a second framework body which can be oppositely clamped, the electronic transformer further comprises a plurality of sets of coils installed on the outer side of a connecting cylinder, the coils are wound through enameled wires to form a cylinder body, coil grooves are formed in the inner sides of the coils, and the coils are arranged in the coil grooves. The connecting cylinder is oppositely inserted into the inner side of the coil groove from the two sides in the axial direction, the coil is arranged on the outer side of the connecting cylinder in a sleeving mode, the framework body, the magnetic core and the coil module in the electronic transformer are separately prefabricated, then all the prefabricated modules are assembled, and during assembling, only the coil needs to be arranged on the outer side of the connecting cylinder in a sleeving mode, and then the connecting cylinder is assembled. The first framework body and the second framework body are inserted and fixed, then the coil connector is clamped in the corresponding pin clamping groove according to the design requirement, assembling can be completed, follow-up welding is not needed, meanwhile, the steps of wire cutting and insulating tape winding are omitted, and the framework is relatively simpler and more convenient.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic transformers, and in particular relates to an electronic transformer frame and an electronic transformer. Background Art

[0002] An electronic transformer is a small power transformer that uses the principle of electromagnetic induction to convert voltage and current. It is usually composed of two major parts: an iron core and a winding (coil). It has the characteristics of small size, low cost, and less wire usage. It can stably output the required voltage and provide a stable power supply for circuits and equipment.

[0003] During the assembly and manufacturing process of the electronic transformer, the enameled wire needs to be wound around the transformer frame layer by layer, and each time a layer is wound, the enameled wire needs to be cut short and wound around a specific position (connection point) on the frame, and then a layer of insulating tape is wound around the outside of each layer of enameled wire. The above steps are repeated until the entire coil is wound. Subsequently, the wire joints remaining on the frame need to be welded. In this way, the entire assembly process of the coil is complicated and the assembly difficulty is relatively large. Therefore, an electronic transformer with a simple assembly method is urgently needed. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide an electronic transformer skeleton and an electronic transformer, so as to at least partially solve the problems raised in the above background technology.

[0005] The technical solution adopted by the present invention is as follows: In the first aspect, an electronic transformer skeleton is proposed, including a skeleton body, the skeleton body including a first skeleton body and a second skeleton body that can be relatively engaged, the first skeleton body including a first connecting tube, the second skeleton body including a second connecting tube, the first connecting tube and the second connecting tube are respectively provided with a plug and a slot at the butt ends, so that the first connecting tube and the second connecting tube are axially engaged and fixed with each other through the plug and the slot to form a connecting tube, and a baffle is provided on the side of the connecting tube away from the butt end, wherein a heat conduction area is provided on the inner wall of the connecting tube and the outer wall of the baffle, and the heat conduction area is filled with a heat conducting medium.

[0006] Furthermore, the plug includes two relatively arranged limiting spring pieces and guide arc plates arranged on both sides of the limiting spring pieces, there is a gap between the limiting spring pieces and the guide arc plates, and a card slot is provided in the slot corresponding to the position of the limiting spring piece, and the end of the limiting spring piece can be elastically inserted into the card slot.

[0007] The second aspect of the present invention proposes an electronic transformer, including the above-mentioned electronic transformer skeleton, and also includes multiple groups of coils installed on the outside of the connecting tube, the coils are wound by enameled wire to form a cylinder, the inner side of the coil has a coil groove, the connecting tube is axially inserted into the inner side of the coil groove from both sides, and the coil is sleeved on the outside of the connecting tube.

[0008] Furthermore, a coil connector is provided at the end of the coil, and a pin bracket is fixedly provided at the bottom end of the baffle. The pin bracket is provided with a pin slot for clamping the coil connector, so that after the coil is sleeved on the outside of the connecting tube, the coil connector can be clamped and fixed on the pin slot of the pin bracket from the inner side of the baffle.

[0009] Furthermore, an insulating sleeve is provided on the inner side of each coil, the insulating sleeve is cylindrical, a second heat conduction groove is provided on one side of the bonding surface between the insulating sleeve and the coil, and the second heat conduction groove is filled with the heat conduction medium.

[0010] Furthermore, along the axial direction, the length of the second heat-conducting groove is smaller than the length of the insulating ring sleeve, and the second heat-conducting groove forms a closed annular groove in the circumferential direction. A sealing film is fixed to the insulating ring sleeve corresponding to the outer side of the second heat-conducting groove, and the sealing film is used to seal the heat-conducting medium in the second heat-conducting groove.

[0011] Furthermore, it also includes a magnetic core, which includes a first magnetic core and a second magnetic core, and opposite sides of the first magnetic core and the second magnetic core are each provided with a protruding first protrusion and two second protrusions, and the two second protrusions are symmetrically arranged on both sides of the first protrusion.

[0012] Furthermore, the inner side of the connecting tube has a through groove for accommodating the first protrusion, the cross-sectional shape of the first protrusion is the same as the cross-sectional shape of the through groove, and when the first protrusion is axially inserted into the through groove, the limiting spring sheet and the slot are locked with each other.

[0013] Furthermore, a limit block is fixedly provided on the upper end of the baffle, the first magnetic core is axially installed on the outside of the first frame body, the second magnetic core is axially installed on the outside of the first frame body, and the limit block and the pin bracket are respectively located on the upper and lower sides of the magnetic core.

[0014] Furthermore, the heat-conducting medium includes thermally conductive silicone grease.

[0015] Beneficial effects: The present invention prefabricates the skeleton body, magnetic core and coil module in the electronic transformer separately, and then assembles the prefabricated modules. During assembly, it is only necessary to put the coil on the outside of the connecting tube, plug and fix the first skeleton body and the second skeleton body, and then clip the coil connector into the corresponding pin slot according to the design requirements to complete the assembly without subsequent welding, and at the same time, the steps of wire cutting and winding insulating tape are omitted, which is relatively simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of an electronic transformer skeleton proposed in an embodiment of the present invention; Figure 2 A schematic cross-sectional view of an electronic transformer skeleton proposed in an embodiment of the present invention; Figure 3 A schematic diagram of the three-dimensional structure of an electronic transformer provided in an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a magnetic core provided in an embodiment of the present invention; Figure 5 This is a schematic structural diagram of a coil and an insulating ring sleeve proposed in an embodiment of the present invention.

[0017] Among them, 10, frame body; 100, through groove; 101, first frame body; 102, second frame body; 11, connecting tube; 110, slot; 1101, card slot; 111, plug; 1111, limiting spring; 1112, guide arc plate; 12, baffle; 13, pin bracket; 130, pin card slot; 14, limiting block; 15, heat conduction area; 150, first heat conduction groove; 20, heat conduction medium; 21, sealing film; 30, magnetic core; 301, first magnetic core; 302, second magnetic core; 31, first protrusion; 32, second protrusion; 40, coil; 401, coil groove; 41, coil joint; 50, insulating ring sleeve; 500, ring sleeve groove; 501, second heat conduction groove.

[0018] The accompanying drawings are used to provide further understanding of the embodiments and constitute a part of the specification. They are used for explanation together with the embodiments and do not constitute a limitation of the embodiments. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection.

[0020] In the description of the embodiments, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments.

[0021] like Figure 1 and Figure 2 As shown, in a first aspect of an embodiment of the present invention, an electronic transformer skeleton is provided, including a skeleton body 10, the skeleton body 10 includes a first skeleton body 101 and a second skeleton body 102 that can be relatively engaged. In some embodiments, the skeleton body 10 is supported by an insulating plastic material, and the first skeleton body 101 and the second skeleton body 102 are symmetrically designed.

[0022] Furthermore, the first frame body 101 includes a first connecting tube, and the second frame body 102 includes a second connecting tube. The first connecting tube and the second connecting tube are respectively provided with a plug 111 and a slot 110 at the butt ends, so that the first connecting tube and the second connecting tube are axially engaged and fixed with each other through the plug 111 and the slot 110 to form a connecting tube 11. A baffle 12 is provided on the side of the connecting tube 11 away from the butt end. In this way, the enameled wire can be wound around the outside of the cylinder body after the two connecting tubes 11 are plugged together during the winding process to form a coil 40.

[0023] Furthermore, the plug 111 includes two relatively arranged limiting spring pieces 1111 and guide arc plates 1112 arranged on both sides of the limiting spring pieces 1111, there is a gap between the limiting spring pieces 1111 and the guide arc plates 1112, and a card slot 1101 is provided at the position corresponding to the limiting spring piece 1111 in the slot 110, and the end of the limiting spring piece 1111 can be elastically inserted into the card slot 1101, wherein the thickness of the guide arc plates 1112, the limiting spring piece 1111 and the thickness of the card slot 1101 are all half of the thickness of the plug 111, and the arc structure between the guide arc plates 1112 and the plug 111 ensures a certain strength, and can play a certain guiding role in the plug 111 entering the slot 110 during the process of the two connecting tubes 11 being plugged in, and after the two connecting tubes 11 are plugged in, the limiting spring piece 1111 pops into the card slot 1101 to achieve axial positioning of the two plugs 111.

[0024] like Figure 1 and Figure 2 As shown, a heat conduction area 15 is provided on the inner wall of the connecting tube 11 and the outer wall of the baffle 12 , and the heat conduction area 15 is filled with a heat conduction medium 20 .

[0025] In some embodiments, a first heat-conducting groove 150 is provided on the skeleton body 10 at the heat-conducting area 15. The first heat-conducting groove 150 is constructed in the connecting tube 11 as a spiral groove or a plurality of parallel annular grooves. A relatively large annular groove is provided on the baffle 12. The groove on the connecting tube 11 is connected or not connected to the groove on the baffle 12. The first heat-conducting groove 150 is filled with a heat-conducting medium 20, which accelerates the heat conduction of the skeleton body 10 as a whole and the magnetic core 30 and the coil 40 installed on the skeleton body 10.

[0026] In a second aspect of an embodiment of the present invention, an electronic transformer is provided, comprising the above-mentioned electronic transformer skeleton, and also comprising a plurality of groups of coils 40 installed on the outside of a connecting tube 11, wherein the coils 40 are wound by enameled wire to form a cylindrical body, and the inner side of the coils 40 has a coil groove 401, and the connecting tube 11 is axially inserted into the inner side of the coil groove 401 from both sides, and the coils 40 are sleeved on the outer side of the connecting tube 11.

[0027] In this way, during the assembly and manufacturing process of the electronic transformer, the enameled wire can be pre-wound into a cylindrical coil 40 according to the designed number of diameters, and then the coil 40 can be inserted from the inside to the outside of the connecting tube 11 to realize the assembly of the coil 40 and the frame body 10. There is no need to wind the enameled wire on the frame body 10 from the inside to the outside to form the coil 40, and the steps of cutting the wire and winding the insulating tape can be omitted, which is relatively simpler and more convenient.

[0028] Furthermore, in order to save the process of welding the enameled wire joint, a coil joint 41 is provided at the end of the coil 40. When the enameled wire is pre-wound into the coil 40, the coil joint 41 is pre-welded at the end of the coil 40.

[0029] Furthermore, a pin bracket 13 is fixedly provided at the bottom end of the baffle 12, and a pin slot 130 for clamping the coil connector 41 is opened on the pin bracket 13, so that after the coil 40 is sleeved on the outside of the connecting tube 11, the coil connector 41 can be clamped and fixed on the pin slot 130 of the pin bracket 13 from the inside of the baffle 12.

[0030] In this way, during the assembly and manufacturing process of the electronic transformer, after the coil 40 is inserted into the outside of the connecting tube 11, the two first frame bodies 101 and the second frame bodies 102 are inserted and fixed, and then the coil connector 41 is snapped into the corresponding pin slot 130 according to the design requirements, and the assembly is completed without the need for subsequent welding.

[0031] Compared with the existing electronic transformer, the various parts of the electronic transformer are prefabricated separately, and the prefabricated parts such as the frame body 10 and the coil 40 can be directly assembled without using other tools, making the assembly process simpler and more convenient.

[0032] like Figure 5As shown, in order to improve the insulation between each layer of coils 40, currently after each layer of coils 40 is wound, it is necessary to wrap tape around the outside of the coils 40, and an insulating sleeve 50 is provided on the inside of each coil 40, and the insulating sleeve 50 is cylindrical.

[0033] In this way, an insulating ring sleeve 50 is provided on the inner side of each coil 40 to improve the insulation between the coils 40 and keep the structure of the coil 40 stable and not easy to loosen. During pre-processing, the enameled wire is directly wound around the outer side of the insulating ring sleeve 50 to form the coil 40, which is also convenient for later assembly.

[0034] Furthermore, in order to enhance the heat conduction and heat dissipation capabilities between the coils 40, a second heat conduction groove 501 is opened on one side of the fitting surface between the insulating ring sleeve 50 and the coil 40, and the second heat conduction groove 501 is filled with a heat conductive medium 20. The inner side of the insulating ring sleeve 50 has a ring sleeve groove 500 for the mutual nesting of multiple layers of coils 40.

[0035] In some embodiments, along the axial direction, the length of the second heat-conducting groove 501 is less than the length of the insulating ring sleeve 50, and the second heat-conducting groove 501 forms a closed annular groove in the circumferential direction. A sealing film 21 is fixed to the outer side of the insulating ring sleeve 50 corresponding to the second heat-conducting groove 501, and the sealing film 21 is used to enclose the heat-conducting medium 20 in the second heat-conducting groove 501.

[0036] Among them, the heat-conducting medium 20 can be made of thermal grease, and the sealing film 21 can be made of polyethylene film or polyester film, which is adhered to the outer circumference of the insulating ring sleeve 50 to seal the thermal grease in the second heat-conducting groove 501. In this way, after the enameled wire is wound, the thermal grease can be deformed and filled in the gaps between the wires to increase the contact area, and the heat generated by the enameled wire during operation is transferred to the thermal grease, thereby achieving good thermal conductivity and heat dissipation effects and avoiding heat concentration in a certain area.

[0037] like Figure 3 and Figure 4 As shown, the electronic transformer also includes a magnetic core 30, which includes a first magnetic core 301 and a second magnetic core 302. The first magnetic core 301 and the second magnetic core 302 are provided with a protruding first protrusion 31 and two second protrusions 32 on opposite sides, and the two second protrusions 32 are symmetrically arranged on both sides of the first protrusion 31.

[0038] Among them, the inner side of the connecting tube 11 has a through groove 100 for accommodating the first protrusion 31, and the cross-sectional shape of the first protrusion 31 is the same as the cross-sectional shape of the through groove 100, and when the first protrusion 31 is axially inserted into the through groove 100, the limiting spring piece 1111 and the card slot 1101 are locked with each other. In this way, after the magnetic core 30 is assembled to the outside of the skeleton body 10, the first protrusion 31 can extend into the inside of the through groove 100 and adhere to the inner wall of the limiting spring piece 1111, thereby limiting the range of movement of the limiting spring piece 1111, thereby achieving mutual locking of the limiting spring piece 1111 and the card slot 1101, so that the limiting spring piece 1111 and the card slot 1101 cannot be loosened from each other.

[0039] Furthermore, a limit block 14 is fixedly provided at the upper end of the baffle 12, the first magnetic core 301 is axially installed on the outside of the first frame body 101, and the second magnetic core 302 is axially installed on the outside of the first frame body 101. The limit block 14 and the pin bracket 13 are respectively located on the upper and lower sides of the magnetic core 30 to achieve preliminary positioning of the first magnetic core 301 and the second magnetic core 302. After assembly, the first magnetic core 301 and the second magnetic core 302 need to be fixed with tape or heat shrink sleeve to ensure that the position between the first magnetic core 301 and the second magnetic core 302 is fixed, thereby completing the assembly of the entire electronic transformer.

[0040] In combination with the above embodiments, the skeleton body 10, the magnetic core 30 and the coil 40 modules in the electronic transformer are prefabricated separately, and then the prefabricated modules are assembled. During assembly, it is only necessary to insert the coil 40 onto the outside of the connecting tube 11, plug and fix the two first skeleton bodies 101 and the second skeleton bodies 102, and then snap the coil connector 41 into the corresponding pin slot 130 according to the design requirements. The assembly is completed without the need for subsequent welding, and the steps of wire cutting and winding insulating tape are omitted, which is relatively simpler and more convenient.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] The above description of the implementation mode is not restrictive, and the drawings show only one of the implementation modes, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the scope of protection.

Claims

1. An electronic transformer skeleton, characterized in that: The invention comprises a frame body (10), wherein the frame body (10) comprises a first frame body (101) and a second frame body (102) which can be relatively engaged with each other, wherein the first frame body (101) comprises a first connecting tube, and the second frame body (102) comprises a second connecting tube, wherein the first connecting tube and the second connecting tube are respectively provided with a plug (111) and a slot (110) at their butt ends, so that the first connecting tube and the second connecting tube are axially engaged with each other through the plug (111) and the slot (110) to form a connecting tube (11), wherein a baffle (12) is provided on the side of the connecting tube (11) away from the butt end, wherein a heat conduction area (15) is provided on the inner wall of the connecting tube (11) and the outer wall of the baffle (12), and the heat conduction area (15) is filled with a heat conduction medium (20).

2. The electronic transformer skeleton according to claim 1, characterized in that: The plug (111) comprises two limiting spring pieces (1111) arranged opposite to each other and guide arc plates (1112) arranged on both sides of the limiting spring pieces (1111); a gap is provided between the limiting spring pieces (1111) and the guide arc plates (1112); a slot (1101) is provided in the slot (110) at a position corresponding to the limiting spring piece (1111); and an end of the limiting spring piece (1111) can be elastically inserted into the slot (1101).

3. The electronic transformer skeleton according to claim 2, characterized in that: The heat-conducting medium (20) comprises heat-conducting silicone grease.

4. An electronic transformer, characterized in that: The electronic transformer skeleton comprises the electronic transformer skeleton as claimed in claim 3, and further comprises a plurality of coils (40) mounted on the outside of the connecting tube (11), wherein the coils (40) are wound by enameled wire to form a cylindrical body, and the inner side of the coils (40) has coil grooves (401), and the connecting tube (11) is axially inserted into the inner side of the coil grooves (401) from both sides, and the coils (40) are sleeved on the outer side of the connecting tube (11).

5. The electronic transformer according to claim 4, characterized in that: A coil connector (41) is provided at the end of the coil (40), a pin bracket (13) is fixedly provided at the bottom end of the baffle (12), and a pin slot (130) for clamping the coil connector (41) is provided on the pin bracket (13), so that after the coil (40) is sleeved on the outside of the connecting tube (11), the coil connector (41) can be clamped and fixed on the pin slot (130) of the pin bracket (13).

6. The electronic transformer according to claim 4, characterized in that: An insulating sleeve (50) is provided on the inner side of each coil (40), the insulating sleeve (50) being cylindrical in structure, a second heat conduction groove (501) being provided on one side of the contact surface between the insulating sleeve (50) and the coil (40), the second heat conduction groove (501) being filled with the heat conduction medium (20).

7. The electronic transformer according to claim 6, characterized in that: In the axial direction, the length of the second heat-conducting groove (501) is smaller than the length of the insulating ring sleeve (50); the second heat-conducting groove (501) forms a closed annular groove in the circumferential direction; a sealing film (21) is fixedly attached to the outer side of the insulating ring sleeve (50) corresponding to the second heat-conducting groove (501); the sealing film (21) is used to seal the heat-conducting medium (20) in the second heat-conducting groove (501).

8. The electronic transformer according to claim 4, characterized in that: It also comprises a magnetic core (30), the magnetic core (30) comprising a first magnetic core (301) and a second magnetic core (302), the first magnetic core (301) and the second magnetic core (302) being provided with a protruding first protrusion (31) and two second protrusions (32) on opposite sides thereof, the two second protrusions (32) being symmetrically arranged on both sides of the first protrusion (31).

9. The electronic transformer according to claim 8, characterized in that: The inner side of the connecting tube (11) has a through groove (100) for accommodating the first protrusion (31); the cross-sectional shape of the first protrusion (31) is the same as the cross-sectional shape of the through groove (100); and when the first protrusion (31) is axially inserted into the through groove (100), the limiting spring sheet (1111) and the locking groove (1101) are locked with each other.

10. The electronic transformer according to claim 9, characterized in that: A limit block (14) is fixedly provided at the upper end of the baffle (12); the first magnetic core (301) is axially mounted on the outside of the first frame body (101); the second magnetic core (302) is axially mounted on the outside of the first frame body (101); the limit block (14) and the pin bracket (13) are respectively located on the upper and lower sides of the magnetic core (30).

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