Insertion piece type energy-taking transformer

Abstract

The utility model discloses an insertion piece type energy taking transformer which comprises a framework, a coil and an iron core. The framework is formed by combining a first framework and a second framework in a left-right buckling mode through at least two clamping grooves in different directions and corresponding clamping blocks. The coil comprises a primary coil and a secondary coil; the primary coil is wound on the periphery of the first framework; the secondary coil is wound on the periphery of the second framework; the first framework and the second framework are internally provided with rectangular holes which are through front and back respectively; and the iron core is formed by butting a plurality of U-shaped silicon steel sheets and a plurality of I-shaped silicon steel sheets front and back and stacking the U-shaped silicon steel sheets and the I-shaped silicon steel sheets in the two rectangular holes up and down. The iron core is formed by combining a plurality of silicon steel sheet laminations, so that the coil, the framework and the iron core which are integrally assembled are compact in structure, the size of the iron core can be reduced, the miniaturization requirement can be met, the material cost can be reduced, and the qualification rate and the utilization rate of the iron core can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of transformer, especially a plug-in sheet type energy-taking transformer. BACKGROUND

[0002] Energy-taking transformers are also called instrument transformers, which are the general term for current energy-taking transformers and voltage energy-taking transformers. They can convert high voltage into low voltage and large current into small current for measurement or system maintenance. Figure 1 As shown in the figure, the existing energy-taking transformer core is assembled by using the open core 10 of plug-in, the coil is sleeved on the open core 10, and then the steel band is used to tighten and fix. However, the existing product has the defects of large size, more materials used, and high cost of the core. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims to provide a plug-in sheet type energy-taking transformer, which meets the requirements of miniaturized energy-taking transformer, greatly reduces the material cost, and improves the utilization rate and the qualified rate of the core.

[0004] In order to achieve the above purpose, the solution of the utility model is as follows:

[0005] A plug-in sheet type energy-taking transformer, comprising a framework, a coil and a core;

[0006] The framework is formed by left and right buckling combination of the first framework and the second framework; the coil comprises a primary coil and a secondary coil; the primary coil is wound on the outer periphery of the first framework; the secondary coil is wound on the outer periphery of the second framework;

[0007] At least two diagonal spaced-apart clamping grooves are arranged on the first framework, and the two clamping grooves are perpendicular to each other; two protruding clamping blocks are arranged on the second framework, and the two clamping blocks are used for buckling in the two clamping grooves, respectively;

[0008] The first framework and the second framework further have front and rear through rectangular holes, respectively;

[0009] The core is composed of a plurality of U-shaped silicon steel sheets and a plurality of I-shaped silicon steel sheets which are front and rear butted and upper and lower stacked, the two ends of each U-shaped silicon steel sheet are inserted into the two rectangular holes of the first framework and the second framework, respectively, and the insertion directions of the upper and lower adjacent U-shaped silicon steel sheets are opposite; and each I-shaped silicon steel sheet is arranged in the same layer as each U-shaped silicon steel sheet, and closes the opening between the two ends of the U-shaped silicon steel sheet in the same layer.

[0010] Further, one clamping groove is arranged at each of the four corners of the right side surface of the first framework, and the upper two clamping grooves extend left and right, and the lower two clamping grooves extend up and down; the clamping blocks corresponding to the clamping grooves are arranged at the four corners of the left side surface of the second framework.

[0011] Further, the right side of the front and rear end surface of the first skeleton is respectively protruded with two first protrusions in front and back, and the clamping groove is recessed in the right side of the first protrusion; the left side of the front and rear end surface of the second skeleton is respectively protruded with two second protrusions in front and back, and the clamping block is protruded in the left side of the second protrusion.

[0012] Further, the bottom of the clamping groove is a circular groove, and the slot is a rectangular slot with a width smaller than the diameter of the circular groove; the clamping block has a rectangular connecting part and a cylindrical clamping part corresponding to the clamping groove.

[0013] Further, the front and rear ends of each U-shaped silicon steel sheet and each I-shaped silicon steel sheet of the iron core are respectively provided with a clamping fixing part.

[0014] Further, the clamping fixing part comprises an open hoop body, and two opposite connecting pieces are arranged at the opening of the open hoop body, and a hoop tightening screw is arranged on the two connecting pieces.

[0015] After the above technical scheme is adopted, the iron core is combined by a plurality of silicon steel sheets, a proper number of silicon steel sheets can be selected according to the size of the rectangular hole, and the U-shaped silicon steel sheets and the I-shaped silicon steel sheets are inserted into the two rectangular holes in the front and back direction, so that the structure of the coil, the skeleton and the iron core after overall assembly is compact, the volume of the iron core can be reduced, the demand for miniaturization can be met, the material cost can be reduced, the qualified rate and the utilization rate of the iron core can be effectively improved. By arranging two diagonal and different direction clamping grooves and corresponding clamping blocks, the first skeleton and the second skeleton can be effectively limited, the stability after buckling can be improved, the first skeleton and the second skeleton are limited in the horizontal and vertical directions, the first skeleton and the second skeleton are prevented from moving forward, backward, left and right, and the subsequent iron core sheet assembly can be facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the existing power taking transformer;

[0017] Figure 2 It is a perspective view of an embodiment of the utility model;

[0018] Figure 3 It is a partial exploded view of an embodiment of the utility model;

[0019] Figure 4 It is an exploded view of an embodiment of the utility model.

[0020] Label explanation: skeleton 1, first skeleton 11, card slot 111, circular slot 1111, rectangular port 1112, first protrusion 112, second skeleton 12, card block 121, rectangular connecting part 1211, cylindrical clamping part 1212, second protrusion 122, rectangular hole 13, coil 2, primary coil 21, secondary coil 22, core 3, U-shaped silicon steel sheet 31, I-shaped silicon steel sheet 32, clamp fixing part 4, open hoop body 41, connecting sheet 411, hoop tightening screw 42. DETAILED DESCRIPTION

[0021] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] As Figures 2 to 4 shown, a plug-in type energy-taking transformer includes a skeleton 1, a coil 2 and a core 3.

[0023] The skeleton 1 is formed by left and right buckling combination of a first skeleton 11 and a second skeleton 12; the coil 2 includes a primary coil 21 and a secondary coil 22; the primary coil 21 is wound on the outer periphery of the first skeleton 11; and the secondary coil 22 is wound on the outer periphery of the second skeleton 12.

[0024] The independent first skeleton 11 and the second skeleton 12 can facilitate winding of the coil 2, and the first skeleton 11 and the second skeleton 12 can also be quickly buckled and combined to facilitate product assembly and production.

[0025] The first skeleton 11 is provided with at least two diagonally spaced card slots 111, and the two card slots 111 are perpendicular to each other respectively; the second skeleton 12 is provided with two protruding card blocks 121, and the two card blocks 121 are used for buckling in the two card slots 111 respectively; by setting two diagonally spaced and different direction card slots 111 matched with corresponding card blocks 121, the first skeleton 11 and the second skeleton 12 can be effectively limited, the stability after buckling is improved, the first skeleton 11 and the second skeleton 12 are limited in horizontal and vertical directions, and the first skeleton 11 and the second skeleton 12 are prevented from moving forward, backward, left and right, which can facilitate subsequent core 3 plug-in assembly.

[0026] The first skeleton 11 and the second skeleton 12 further have a front and rear through rectangular hole 13 respectively inside.

[0027] The iron core 3 is composed of a plurality of U-shaped silicon steel sheets 31 and a plurality of I-shaped silicon steel sheets 32 which are connected front to back and stacked up and down, both ends of each U-shaped silicon steel sheet 31 are respectively inserted into two rectangular holes 13 of the first skeleton 11 and the second skeleton 12, and the insertion directions of the adjacent U-shaped silicon steel sheets 31 stacked up and down are opposite; and each I-shaped silicon steel sheet 32 is arranged in the same layer as each U-shaped silicon steel sheet 31, and closes the opening between the two ends of the U-shaped silicon steel sheet 31 in the same layer.

[0028] Therefore, the iron core 3 is composed of a plurality of silicon steel sheet laminations, a proper number of silicon steel sheets can be selected according to the size of the rectangular hole 13, and the U-shaped silicon steel sheet 31 and the I-shaped silicon steel sheet 32 can be inserted into the two rectangular holes 13 by a sheet inserting machine, so that the structure of the coil 2, the skeleton 1 and the iron core 3 after overall assembly is compact, the volume of the iron core 3 can be reduced, the demand for miniaturization can be met, and the yield and utilization of the iron core 3 can be effectively improved.

[0029] In order to further improve the stability of the iron core 3 composed of silicon steel sheet laminations, a clamp fixing piece 4 is arranged at the front and rear ends of each U-shaped silicon steel sheet 31 and each I-shaped silicon steel sheet 32 which are stacked with each other. The two clamp fixing pieces 4 are used to clamp tightly to prevent the silicon steel sheets of the iron core 3 from loosening and falling off.

[0030] Specifically, the clamp fixing piece 4 includes an open clamp body 41, two opposite connecting pieces 411 are arranged at the opening of the open clamp body 41, and a clamping screw 42 is arranged on the two connecting pieces 411. The opening size of the open clamp body 41 is adjusted by rotating the clamping screw 42 to realize the clamping and fixing of the iron core 3.

[0031] In the embodiment, four corners of the right side surface of the first skeleton 11 are respectively provided with a clamping groove 111, and the upper two clamping grooves 111 extend left and right, and the lower two clamping grooves 111 extend up and down; and the left side surface of the second skeleton 12 is provided with a clamping block 121 corresponding to the clamping groove 111. Therefore, by arranging the clamping groove 111 and the clamping block 121 in the four corners between the first skeleton 11 and the second skeleton 12, the structural stability of the two buckles can be further improved.

[0032] Specifically, the right side of the front and rear end surfaces of the first skeleton 11 is respectively provided with two first protrusions 112 which are spaced apart up and down, and the clamping groove 111 is recessed on the right side surface of the first protrusion 112; the left side of the front and rear end surfaces of the second skeleton 12 is respectively provided with two second protrusions 122 which are spaced apart up and down, and the clamping block 121 is protruded on the left side surface of the second protrusion 122.

[0033] And, the bottom of the card slot 111 is a circular slot 1111, and the slot opening is a rectangular opening 1112 with a width smaller than the diameter of the circular slot 1111; the card block 121 has a rectangular connecting part 1211 and a cylindrical clamping part 1212 corresponding to the card slot 111. Thus, when buckling, the force can make the cylindrical clamping part 1212 of the card block 121 extrude from the narrower rectangular opening 1112 of the card slot 111, and then fit into the circular slot 1111. After loosening, the card block 121 can be limited by the cylindrical clamping part 1212 through the rectangular opening 1112, so that the first skeleton 11 and the second skeleton 12 are buckled and clamped to be fixed. The assembly operation is convenient, and the buckling stability is improved.

[0034] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that equivalent changes and modifications without departing from the principles of the present application are still within the protection scope of the present application.

[0035] In the description of the embodiments of the present application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the present application is used, or the orientation or positional relationship commonly understood by those skilled in the art, and is only for the convenience of describing the present application and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, the meaning of "multiple" and "several" is two or more, unless otherwise specifically limited.

Claims

1. A plug-in power transformer comprising a skeleton, a coil and a core; characterized in that: the skeleton is formed by a left-right clasp combination of a first skeleton and a second skeleton; the coil comprises a primary coil and a secondary coil; the primary coil is wound around the outer periphery of the first skeleton; the secondary coil is wound around the outer periphery of the second skeleton; the first skeleton is provided with at least two diagonally spaced clamping slots, and the two clamping slots are perpendicular to each other respectively; the second skeleton is provided with two protruding clamping blocks, and the two clamping blocks are used for clamping in the two clamping slots respectively; the first skeleton and the second skeleton are further provided with front-rear through rectangular holes respectively; the core is composed of a plurality of U-shaped silicon steel sheets and a plurality of I-shaped silicon steel sheets which are front-rear butted and up-down stacked, the two ends of each U-shaped silicon steel sheet are inserted into the two rectangular holes of the first skeleton and the second skeleton respectively, and the insertion directions of the adjacent U-shaped silicon steel sheets are opposite; and each I-shaped silicon steel sheet is arranged in the same layer as each U-shaped silicon steel sheet, and closes the opening between the two ends of the U-shaped silicon steel sheet in the same layer.

2. A plug-in power supply transformer according to claim 1, characterized in that: the right side of the first skeleton is provided with one clamping slot in each of the four corners, and the upper two clamping slots extend left and right, and the lower two clamping slots extend up and down; the left side of the second skeleton is provided with a clamping block corresponding to the clamping slot in each of the four corners.

3. A plug-in power supply transformer according to claim 2, characterized in that: the right side of the first skeleton is provided with two first protrusions protruding front-rear and spaced up-down at the right side of the front-rear end face respectively, and the clamping slot is recessed at the right side of the first protrusion; the left side of the second skeleton is provided with two second protrusions protruding front-rear and spaced up-down at the left side of the front-rear end face respectively, and the clamping block is protruded at the left side of the second protrusion.

4. A plug-in power extraction transformer according to any one of claims 1 to 3, characterized in that: the slot bottom of the clamping slot is a circular slot, and the slot opening is a rectangular opening with a width smaller than the diameter of the circular slot; the clamping block has a rectangular connecting part and a cylindrical clamping part corresponding to the clamping slot.

5. The plug-in energy harvesting transformer of claim 1, wherein: the front-rear ends of each U-shaped silicon steel sheet and each I-shaped silicon steel sheet which are stacked with each other are provided with a clamping clamp fixing part.

6. A plug-in power supply transformer according to claim 5, characterized in that: the clamping clamp fixing part comprises an open clamp body, the opening of the open clamp body is provided with two opposite connecting pieces, and one clamping screw is threaded on the two connecting pieces.

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