Transformer

Abstract

The transformer comprises a winding framework, an inner coil, an isolating membrane, an outer coil, an upper magnetic block, a lower magnetic block and a guide pin, the winding framework comprises a winding groove and a through hole penetrating through the winding groove, the inner coil, the isolating membrane and the outer coil are sequentially arranged on the winding groove in a sleeved mode, and the upper magnetic block and the lower magnetic block are the same in structure. The upper magnetic block comprises a middle magnetic core and an outer magnetic core, the middle magnetic core is arranged in the through hole, the outer magnetic core is arranged on the side face of the winding framework, and the middle magnetic core and the outer magnetic core form a containing cavity to wrap the inner coil and the outer coil. Only one winding groove is formed in the winding framework of the transformer, the inner coil and the outer coil of the transformer are wound on the winding groove at the same time, the structure is simple, and installation is convenient. And the inner coil and the outer coil are separated through the isolating membrane, so that the inner coil and the outer coil can be conveniently wound, and the safety of the transformer is also improved.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and specifically to a transformer. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change alternating current voltage. Its main components are the primary coil, secondary coil, and iron core (magnetic core). Its main functions include voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization (magnetic saturation transformer). Existing transformers have complex structures, requiring multiple components for assembly, which not only makes assembly difficult but also increases production costs. Utility Model Content

[0003] To address the problem of the complex structure of existing transformers, this invention provides a new type of transformer. The specific technical solution of this invention is as follows:

[0004] A transformer includes: a winding frame, an inner coil, an insulating diaphragm, an outer coil, an upper magnetic block, a lower magnetic block, and guide pins. The winding frame includes a winding groove and a through hole penetrating the winding groove. The inner coil, the insulating diaphragm, and the outer coil are sequentially sleeved on the winding groove. The guide pins are respectively disposed at both ends of the winding frame. The inner coil and the outer coil are respectively connected to the guide pins at both ends of the winding frame. The upper magnetic block and the lower magnetic block have the same structure. The upper magnetic block includes a middle magnetic core and an outer magnetic core. The middle magnetic core is disposed in the through hole, and the outer magnetic core is disposed on the side of the winding frame. The middle magnetic core and the outer magnetic core form a receiving cavity to enclose the inner coil and the outer coil.

[0005] Furthermore, the top and bottom ends of the winding frame are respectively provided with limiting strips for restricting the movement of the upper and lower magnetic blocks.

[0006] Furthermore, the top of the winding skeleton is provided with notches at both ends, and the limiting strip at the top of the winding skeleton is located between the notches.

[0007] Furthermore, the bottom of the winding skeleton is provided with several placement parts at both ends. The number and placement positions of the placement parts at both ends of the winding skeleton are different. Each placement part is provided with a placement hole, and the guide pin is placed in the placement hole.

[0008] Furthermore, a protrusion is provided at the bottom of the placement part.

[0009] Furthermore, the insulating membrane is an insulating adhesive tape.

[0010] Furthermore, the transformer also includes a protective film, which is sleeved on the outer coil and is made of insulating tape.

[0011] Compared with existing technologies, the advantages of this invention are as follows: the transformer winding frame described in this application has only one winding slot, and the inner and outer coils of the transformer are wound on the winding slot simultaneously, which not only simplifies the structure but also facilitates installation. The inner and outer coils are separated by an insulating membrane, which not only facilitates the winding of the inner and outer coils but also increases the safety of the transformer. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the transformer structure in one embodiment of the present invention;

[0013] Figure 2 This is an exploded view of the transformer in one embodiment of the present invention;

[0014] Figure 3 This is a schematic diagram of the bottom of the transformer in one embodiment of the present invention;

[0015] Figure 4 This is a schematic cross-section of a transformer in one embodiment of the present invention. Figure 1 ;

[0016] Figure 5 This is a schematic cross-section of a transformer in one embodiment of the present invention. Figure 2 ;

[0017] Figure 6 This is a schematic diagram of the winding skeleton in one embodiment of the present invention. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0019] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature, and in this description of the utility model, "at least" means one or more, unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] In this utility model, unless otherwise specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Above," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] The following description, in conjunction with the accompanying drawings, further illustrates specific embodiments of the present invention, making the technical solution and beneficial effects of the present invention clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0024] like Figures 1 to 6As shown, a transformer includes: a winding frame 1, an inner coil 2, an insulating film 3, an outer coil 4, an upper magnetic block 5, a lower magnetic block 6, and guide pins 7. The winding frame 1 includes a winding groove 8 and a through hole 9 penetrating the winding groove 8. The inner coil 2, the insulating film 3, and the outer coil 4 are sequentially sleeved on the winding groove 8. The guide pins 7 are respectively disposed at both ends of the winding frame 1. The inner coil 2 and the outer coil 4 are respectively connected to the guide pins 7 at both ends of the winding frame 1. The upper magnetic block 5 and the lower magnetic block 6 have the same structure. The upper magnetic block 5 includes a middle magnetic core 10 and an outer magnetic core 11. The middle magnetic core 10 is disposed in the through hole 9, and the outer magnetic core 11 is disposed on the side of the winding frame 1. The middle magnetic core 10 and the outer magnetic core 11 form a receiving cavity 12 to enclose the inner coil 2 and the outer coil 4. The middle part of the winding frame 1 is also enclosed by the upper magnetic block 5 and the lower magnetic block 6. The inner coil 2, the isolation film 3, and the outer coil 4 are arranged in the winding groove 8 by winding them in sequence, which not only makes assembly convenient but also makes the structure clearly visible.

[0025] In one embodiment, the top and bottom ends of the winding frame 1 are respectively provided with limiting strips 13 for restricting the movement of the upper magnetic block 5 and the lower magnetic block 6. The limiting strips 13 form placement grooves 14 at the top and bottom of the winding frame 1, which facilitates the installation of the upper magnetic block 5 and the lower magnetic block 6 on the winding frame 1, and can also effectively restrict the upper magnetic block 5 and the lower magnetic block 6 to prevent them from moving randomly.

[0026] In one embodiment, the top of the winding frame 1 has notches 15 at both ends, and the limiting strip 13 at the top of the winding frame 1 is located between the notches 15. Users can observe the winding of the inner coil 2, the insulating film 3, and the outer coil 4 through the notches 15, making it highly practical.

[0027] In one embodiment, the bottom of the winding frame 1 is provided with several placement portions 16 at both ends. The number and placement positions of the placement portions 16 at both ends of the winding frame 1 are different. Each placement portion 16 is provided with a placement hole 17, and the guide pin 7 is disposed in the placement hole 17. Transformers are mainly used to transform voltage. If the input and output terminals of the transformer have the same structure, the user may cause the transformer to be reversed during installation, making the circuit malfunction. Therefore, the winding frame 1 of this application is provided with placement portions 16 of different structures as the input and output terminals of the transformer, making it convenient for users to distinguish between the input and output terminals of the transformer.

[0028] In one embodiment, the bottom of the placement part 16 is provided with a protrusion 18. When the wires of the inner coil 2 and the outer coil 4 are connected to the guide pin 7 of the placement part 16, they are first wound around the protrusion 18 and then soldered to the guide pin 7. This not only facilitates the soldering of the wires, but also separates the wires connected to the guide pin 7 to prevent short circuits.

[0029] In one embodiment, the insulating film 3 is an insulating tape. Not only is the insulating film 3 easy to wind, but it also helps to fix the inner coil 2 onto the winding groove 8, making the inner coil 2 more secure.

[0030] In one embodiment, the transformer further includes a protective film 19, which is sleeved on the outer coil 4 and is made of insulating tape. The protective film 19 not only protects the outer coil 4 but also serves to fix the outer coil 4 in place.

[0031] The transformer described in this application has only one winding slot 8 on its winding frame 1. The inner coil 2 and outer coil 4 of the transformer are simultaneously wound on the winding slot 8, which not only simplifies the structure but also facilitates installation. The inner coil 2 and outer coil 4 are separated by an insulating membrane 3, which not only facilitates the winding of the inner coil 2 and outer coil 4 but also increases the safety of the transformer.

[0032] In the description of this specification, the terms "in one embodiment," "preferred," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. The connection methods linked in the description of this specification have significant effects and practical utility.

[0033] Based on the above description of the structure and principle, those skilled in the art should understand that this utility model is not limited to the specific embodiments described above. Improvements and substitutions based on this utility model using techniques known in the art all fall within the protection scope of this utility model and should be defined by the claims.

Claims

1. A transformer, characterized in that, include: The winding frame comprises a winding bobbin, an inner coil, an insulating film, an outer coil, an upper magnetic block, a lower magnetic block, and guide pins. The winding bobbin includes a winding groove and a through hole penetrating the winding groove. The inner coil, the insulating film, and the outer coil are sequentially sleeved on the winding groove. The guide pins are respectively disposed at both ends of the winding bobbin. The inner coil and the outer coil are respectively connected to the guide pins at both ends of the winding bobbin. The upper magnetic block and the lower magnetic block have the same structure. The upper magnetic block includes a middle magnetic core and an outer magnetic core. The middle magnetic core is disposed in the through hole, and the outer magnetic core is disposed on the side of the winding bobbin. The middle magnetic core and the outer magnetic core form a receiving cavity to enclose the inner coil and the outer coil.

2. The transformer according to claim 1, characterized in that, The top and bottom ends of the winding frame are respectively provided with limiting strips to restrict the movement of the upper and lower magnetic blocks.

3. The transformer according to claim 2, characterized in that, The top of the winding frame has notches at both ends, and the limiting strip at the top of the winding frame is located between the notches.

4. The transformer according to claim 1, characterized in that, The bottom of the winding skeleton is provided with several placement parts at both ends. The number and placement position of the placement parts at both ends of the winding skeleton are different. Each placement part is provided with a placement hole, and the guide pin is placed in the placement hole.

5. The transformer according to claim 4, characterized in that, The bottom of the placement part is provided with a protrusion.

6. The transformer according to claim 1, characterized in that, The insulating membrane is an insulating tape.

7. The transformer according to claim 6, characterized in that, The transformer also includes a protective film, which is sleeved on the outer coil and is made of insulating tape.

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