Novel transformer framework structure

Abstract

The utility model discloses a novel transformer framework structure, which relates to the technical field of transformers and comprises a winding framework and two magnetic cores correspondingly inserted into the upper end and the lower end of the winding framework, an upper baffle and a lower baffle are respectively arranged at the upper end and the lower end of the winding framework, and a coil is wound on the winding framework between the upper baffle and the lower baffle. A first bottom block and a second bottom block are arranged on the two sides of the lower baffle, a plurality of PINs are arranged on the first bottom block and the second bottom block, and a plurality of multi-strand pins are led out of the coil; a fixing plate is arranged on the second bottom block, inserting holes corresponding to the PINs are formed in the fixing plate, the fixing plate is installed on the second bottom block through inserting matching of the inserting holes and the PINs, a plurality of fixing notches are formed in the fixing plate, the multiple strands of wire pins penetrate through the fixing notches, and the fixing plate is additionally arranged to serve as a fixing platform of the multiple strands of wire pins. When some specific framework requirements of customers are met, the requirement that winding is still needed in a framework mode is met, the diversity and the application range of products are improved, and meanwhile the multi-strand wire pins are fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a novel transformer skeleton structure. Background Art

[0002] Transformers are essential electrical equipment, widely used in various aspects of power systems, including power plants, substations, industrial production, and household electricity. Their fundamental function is to transform voltage using the principle of electromagnetic induction, converting input AC power into output power at varying voltage levels. In modern power systems, as electricity demand grows, high-power transformers are increasingly used.

[0003] In the design and manufacturing of high-power transformers, multi-stranded wire is often used as lead-out wires to ensure sufficient current-carrying capacity and good heat dissipation performance. However, as transformer power continues to increase, the required multi-stranded wire diameter also increases. Traditional bobbin pin and boss baffle designs often cannot meet the requirements of such thick wire lead-out pins. Therefore, in actual production, many manufacturers choose bobbinless winding to solve this problem.

[0004] Although the skeleton-free design alleviates the lead-out problem to a certain extent, it cannot meet the needs of customers who still need to use skeleton winding when they have some specific skeleton requirements, which limits the diversity and scope of application of the product. In addition, the existing skeleton-free design may still have some problems during the installation and maintenance process of the skeleton-free design. For example, although the skeleton-free design solves the pin problem, it cannot provide sufficient mechanical support in specific application scenarios. Moreover, the lead-out wires are not firmly fixed, and long-term operation may lead to poor contact or degradation of electrical performance.

[0005] Therefore, it is necessary to propose a new technical solution to solve the above problems. Utility Model Content

[0006] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: a novel transformer bobbin structure, comprising a winding bobbin and two magnetic cores correspondingly inserted at the upper and lower ends of the winding bobbin, wherein the upper and lower ends are respectively provided with an upper baffle and a lower baffle, a coil is wound on the winding bobbin between the upper baffle and the lower baffle, a first bottom block and a second bottom block are provided on both sides of the lower baffle, a plurality of PIN pins are provided on each of the first bottom block and the second bottom block, and a plurality of multi-strand wire pins are led out of the coil;

[0008] A fixing plate is provided on the second bottom block, and the fixing plate is provided with a plug-in hole corresponding to the PIN pin. The plug-in hole is plugged into the PIN pin to install the fixing plate on the second bottom block. A plurality of fixing slots are formed on the fixing plate, and the multi-strand wire pins pass through the fixing slots.

[0009] As a further solution of the present invention: a fastening ring is provided inside the plug hole, and the fastening ring is elastic.

[0010] As a further solution of the present invention: the fixing notch is arranged in a superior arc structure.

[0011] As a further solution of the present invention: the fixing plate is made of epoxy resin material.

[0012] As a further solution of the present invention: limit plates are provided on both sides of the opposite end surfaces of the upper baffle and the lower baffle, the two limit plates are concave toward the opposite side, and the shapes of the upper and lower ends of the magnetic core match the space between the two limit plates.

[0013] As a further solution of the present invention: fixing tape is wrapped around the two magnetic cores.

[0014] Compared with the existing technology, the beneficial effects of this technical solution are: the fixing plate is plugged into the PIN pin through the opened plug hole, and the fixing plate is installed on the second bottom block. At this time, the multi-strand wire pins led out from the coil are passed through the fixed grooves formed on the fixing plate to fix the multi-strand wire pins, so that the fixing plate becomes a fixed platform for the multi-strand wire pins. When meeting some specific skeleton requirements of customers, the skeleton winding method is still required to improve the diversity and application scope of the product. At the same time, sufficient mechanical support can be provided for the multi-strand wire pins to avoid poor contact or degradation of electrical performance during long-term operation of the transformer.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2It is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the fixed plate structure of the utility model;

[0020] Figure 4 This is a schematic diagram of a partial cross-sectional structure of a fixed plate of the present utility model;

[0021] The corresponding reference numerals in the accompanying drawings are described as follows:

[0022] 1. Winding frame; 2. Magnetic core; 3. Upper baffle; 4. Lower baffle; 41. First bottom block; 42. Second bottom block; 43. PIN foot; 5. Coil; 51. Multi-strand wire pin; 6. Fixing plate; 61. Plug hole; 62. Fixing notch; 63. Fastening ring; 7. Limiting plate; 8. Fixing tape. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4 A novel transformer bobbin structure includes a winding bobbin 1 and two magnetic cores 2 inserted into the upper and lower ends of the winding bobbin 1, an upper baffle 3 and a lower baffle 4 are respectively provided at the upper and lower ends. A coil 5 is wound on the winding bobbin 1 between the upper baffle 3 and the lower baffle 4. A first bottom block 41 and a second bottom block 42 are provided on both sides of the lower baffle 4. A plurality of PIN pins 43 are provided on the first bottom block 41 and the second bottom block 42. A plurality of multi-strand wire pins 51 are led out of the coil 5. Insulating tape can be wrapped around the outside of the coil 5 to insulate the coil 5.

[0025] A fixing plate 6 is provided on the second bottom block 42. The fixing plate 6 is provided with a plug-in hole 61 corresponding to the PIN pin 43. The plug-in hole 61 is plugged into the PIN pin 43 to install the fixing plate 6 on the second bottom block 42. A plurality of fixing slots 62 are formed on the fixing plate 6, and the multi-strand wire pin 51 passes through the fixing slots 62.

[0026] Specifically, the fixing plate 6 is plugged into and matched with the PIN pin 43 through the provided plug hole 61, and the fixing plate 6 is installed on the second bottom block 42. At this time, the multi-strand wire pin 51 led out from the coil 5 is passed through the fixing notch 62 formed on the fixing plate 6 to fix the multi-strand wire pin 51, so that the fixing plate 6 becomes a fixing platform for the multi-strand wire pin 51. When meeting some specific skeleton requirements of customers, the skeleton winding method is still required to improve the diversity and application range of the product. At the same time, it can provide sufficient mechanical support for the multi-strand wire pin 51 to avoid poor contact or degradation of electrical performance during long-term operation of the transformer.

[0027] In addition, the fixing plate 6 of the present invention is fixed to the second bottom block 42 by plugging, which is efficient during the assembly process. At the same time, the fixing plate 6 can be directly removed when it is necessary to remove it.

[0028] Among them, insulating tape can be wrapped around the multi-strand wire pin 51, and the multi-strand wire pin 51 can be crimped using a crimping joint to facilitate the connection between the multi-strand wire pin 51 and the electronic component or circuit board, while ensuring the insulation strength.

[0029] Preferably, the fixing notch 62 is configured in a superior arc structure, which can prevent the multi-strand wire pin 51 from escaping from the fixing notch 62 .

[0030] Preferably, a fastening ring 63 is provided inside the plug hole 61, and the fastening ring 63 is elastic.

[0031] Specifically, when the plug-in hole 61 is plugged into the PIN pin 43, the fastening ring 63 is first squeezed between the plug-in hole 61 and the PIN pin 43. At this time, the elastic restoring force of the fastening ring 63 can be used to make the plug-in hole 61 and the PIN pin 43 tighter, thereby preventing the fixing plate 6 from falling off by itself.

[0032] Preferably, the fixing plate 6 is made of epoxy resin material.

[0033] Specifically, the fixing plate 6 can be made by mixing epoxy resin, base material and curing agent and cooling and curing, so that the fixing plate 6 has excellent mechanical strength and electrical insulation performance, and also has good thermal stability and can withstand higher temperatures to avoid melting.

[0034] In some embodiments, limit plates 7 are provided on both sides of the opposite end surfaces of the upper baffle 3 and the lower baffle 4. The two limit plates 7 are concave toward the opposite side, and the shapes of the upper and lower ends of the magnetic core 2 match the space between the two limit plates 7.

[0035] Specifically, when assembling the transformer, the copper wire is first wound on the winding frame 1 to form a winding coil 5, and then the two magnetic cores 2 are inserted into the winding frame 1 at both ends. When the magnetic core 2 is assembled, two limit plates 7 with a concave structure d are used, and the space between the magnetic core 2 and the two limit plates 7 is matched, so that the irregular geometric shape is used to provide position limitation for the two magnetic cores 2, so that the two magnetic cores 2 remain in a docking state, avoiding the occurrence of inaccurate position of the two magnetic cores 2 during the assembly and fixation process, making the assembly fast and accurate.

[0036] Preferably, a fixing tape 8 is wrapped around the two magnetic cores 2 to fix the two magnetic cores 2 together to prevent them from loosening. The fixing tape 8 is an insulating tape to ensure insulation while fixing the two magnetic cores 2.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A new transformer skeleton structure, characterized in that: The invention comprises a winding frame (1) and two magnetic cores (2) inserted into the upper and lower ends of the winding frame (1), wherein the upper and lower ends are respectively provided with an upper baffle (3) and a lower baffle (4), a coil (5) is wound on the winding frame (1) between the upper baffle (3) and the lower baffle (4), a first bottom block (41) and a second bottom block (42) are provided on both sides of the lower baffle (4), a plurality of PIN pins (43) are provided on the first bottom block (41) and the second bottom block (42), and a plurality of multi-strand pins (51) are led out of the coil (5); A fixing plate (6) is provided on the second bottom block (42), and the fixing plate (6) is provided with a plug hole (61) corresponding to the PIN pin (43). The fixing plate (6) is installed on the second bottom block (42) by plugging and matching the plug hole (61) with the PIN pin (43). A plurality of fixing notches (62) are formed on the fixing plate (6), and the multi-strand pin (51) passes through the fixing notches (62).

2. The novel transformer skeleton structure according to claim 1 is characterized in that: A fastening ring (63) is provided inside the plug hole (61), and the fastening ring (63) is elastic.

3. The novel transformer skeleton structure according to claim 1 is characterized in that: The fixing notch (62) is arranged in a superior arc structure.

4. The novel transformer skeleton structure according to claim 1 is characterized in that: The fixing plate (6) is made of epoxy resin material.

5. The novel transformer skeleton structure according to claim 1 is characterized in that: Limiting plates (7) are provided on both sides of opposite end surfaces of the upper baffle (3) and the lower baffle (4), the two limiting plates (7) are concave toward the opposite side, and the shapes of the upper and lower ends of the magnetic core (2) match the space between the two limiting plates (7).

6. The novel transformer skeleton structure according to claim 5 is characterized in that: The two magnetic cores (2) are wrapped with fixing tape (8).

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