Low-distributed capacitance high-frequency transformer

Abstract

The utility model relates to the technical field of transformers, in particular to a low-distributed capacitance high-frequency transformer which comprises a framework, a winding, a fixing sleeve and an iron core assembly, the winding is connected to the middle of the exterior of the framework, the iron core assembly is connected to the exterior of the framework and the winding, and the fixing sleeve is connected to the exterior of the iron core assembly. The framework is composed of a winding column, a bottom plate, a clamping groove, a binding post, an upper baffle, an inserting groove and a top plate, mounting plates are arranged on the two sides of the lower end of the fixing sleeve, a limiting block is arranged on the inner side of the fixing sleeve, a filling plate is arranged in the middle of the lower portion of the fixing sleeve, and the lower end of the fixing sleeve is connected with a connecting plate. The iron core assembly is composed of a lower iron core, an upper iron core and an adhesive tape connected outside the lower iron core and the upper iron core.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a low distributed capacitance high frequency transformer. Background Art

[0002] When a high-frequency transformer is in use, distributed capacitance will be generated due to the large number of winding layers. When working at a high frequency, these distributed capacitances have a great impact on the working state of the transformer, and the overall installation is relatively inconvenient.

[0003] Therefore, it is necessary to design a low distributed capacitance high frequency transformer to solve the problems in the above background technology. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art and proposes a low distributed capacitance high frequency transformer.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A low distributed capacitance high frequency transformer comprises a frame, a winding, a fixing sleeve and an iron core assembly, wherein the winding is connected to the middle of the outer portion of the frame, the outer portions of the frame and the winding are connected to the iron core assembly, and the outer portion of the iron core assembly is connected to the fixing sleeve;

[0007] The skeleton is composed of a winding column, a bottom plate, a clamping groove, a terminal, an upper baffle, a plug-in groove and a top plate, and the bottom end of the winding column is provided with a bottom plate, the top end of the winding column is connected to the top plate, the upper end of the top plate and the lower end of the bottom plate are both provided with an upper baffle near the middle, the front and back sides of the top plate are both provided with multiple groups of clamping grooves, the upper end of the top plate is connected to the terminal near the front and back sides, and the middle of the winding column is provided with a plug-in groove;

[0008] The fixing sleeve is provided with mounting plates on both sides of the lower end, a limit block is provided on the inner side of the fixing sleeve, a filling plate is provided in the middle of the lower part of the fixing sleeve, and the lower end of the fixing sleeve is connected with a connecting plate;

[0009] The iron core assembly consists of a lower iron core, an upper iron core and adhesive tapes connected to the outer portions of the lower iron core and the upper iron core.

[0010] As a preferred solution of the utility model, the winding consists of a primary coil arranged in an inner circle, a secondary coil arranged in an outer circle, a copper foil electrostatic shielding layer arranged between the primary coil and the secondary coil, and a tape arranged on the outside of the secondary coil. The clamping groove and the primary coil and the secondary coil are connected by snapping, and the terminal and the primary coil and the secondary coil are connected by welding.

[0011] As a preferred solution of the utility model, the primary coil and the secondary coil are both wound by enameled wire.

[0012] As a preferred solution of the utility model, the lower iron core, the upper iron core, the winding column and the plug-in slot are connected by plugging and are fastened by adhesive tape.

[0013] As a preferred solution of the utility model, the fixing sleeve and the core assembly are connected by sleeve connection, and the fixing sleeve and the connecting plate are connected by bolts.

[0014] As a preferred solution of the utility model, the frame is made of a plastic square frame, a bakelite square frame or a paper board square frame.

[0015] To sum up, the technical effects and advantages of the utility model are as follows: the low distributed capacitance high frequency transformer, the winding is composed of a primary coil arranged in an inner ring, a secondary coil arranged in an outer ring, a copper foil electrostatic shielding layer arranged between the primary coil and the secondary coil, and an adhesive tape arranged outside the secondary coil, which increases the distance between winding layers, thereby reducing the interlayer capacitance, and increases the insulation thickness to reduce the capacitance between windings, the clamping groove and the primary coil and the secondary coil are connected by snap-fitting, the terminal and the primary coil and the secondary coil are connected by welding, the primary coil and the secondary coil are both wound by enameled wire, the dielectric constant is low, the inter-turn capacitance can be reduced, the leakage flux is minimized, the power-to-volume ratio is highest, the efficiency is high, and the quality is good, the limit block on the inner side of the fixing sleeve can make the overall installation more stable, the fixing sleeve and the connecting plate are more convenient to install, and a stable support is formed outside the skeleton, the skeleton is made of a plastic square skeleton, a bakelite square skeleton or a paper board square skeleton, forming a support and insulation structure inside the winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the overall structure diagram of the utility model;

[0017] Figure 2 This is a winding structure diagram of the utility model;

[0018] Figure 3 This is a skeleton structure diagram of the utility model;

[0019] Figure 4 This is a structural diagram of a fixed sleeve of the utility model;

[0020] Figure 5 This is a structural diagram of the core assembly of the utility model.

[0021] In the figure: 1. skeleton; 101. winding column; 102. bottom plate; 103. clamping groove; 104. terminal; 105. upper baffle; 106. plug-in groove; 107. top plate; 2. winding; 3. fixing sleeve; 301. limit block; 302. mounting plate; 303. filling plate; 304. connecting plate; 4. core assembly; 401. lower core; 402. upper core; 403. tape. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely 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 of the embodiments.

[0023] Reference Figure 1-Figure 5 A low distributed capacitance high frequency transformer comprises a skeleton 1, a winding 2, a fixing sleeve 3 and an iron core assembly 4, the middle of the skeleton 1 is connected to the winding 2, the skeleton 1 and the winding 2 are connected to the iron core assembly 4, and the iron core assembly 4 is connected to the fixing sleeve 3; the skeleton 1 is composed of a winding column 101, a bottom plate 102, a clamping groove 103, a terminal 104, an upper baffle 105, a plug-in groove 106 and a top plate 107, and the bottom plate 102 is provided at the lower end of the winding column 101, the top plate 107 is connected to the upper end of the winding column 101, and the upper end of the top plate 107 and the lower end of the bottom plate 102 are both provided near the middle. There is an upper baffle 105, and multiple groups of clamping grooves 103 are opened on the front and back of the top plate 107. The upper end of the top plate 107 is connected to the terminal 104 near the front and back, and a plug-in groove 106 is opened in the middle of the winding column 101; mounting plates 302 are provided on both sides of the lower end of the fixing sleeve 3, a limit block 301 is provided on the inner side of the fixing sleeve 3, a filling plate 303 is provided in the middle of the lower part of the fixing sleeve 3, and a connecting plate 304 is connected to the lower end of the fixing sleeve 3; the core assembly 4 is composed of a lower core 401, an upper core 402 and a tape 403 connected to the outside of the lower core 401 and the upper core 402.

[0024] Reference Figure 1 , Figure 2 and Figure 3 When the high-frequency transformer is in use, the transformer will generate distributed capacitance due to the large number of winding layers. When working in a high-frequency state, these distributed capacitances have a great impact on the working state of the transformer, and the overall installation is relatively inconvenient. The winding 2 is composed of a primary coil arranged in the inner circle, a secondary coil arranged in the outer circle, a copper foil electrostatic shielding layer arranged between the primary coil and the secondary coil, and a tape arranged outside the secondary coil. The distance between the winding layers is increased, thereby reducing the interlayer capacitance. The insulation thickness is increased to reduce the winding capacitance. The clamping groove 103 and the primary coil and the secondary coil are connected by clamping, and the terminal 104 and the primary coil and the secondary coil are connected by welding. The primary coil and the secondary coil are both wound by enameled wire, with a low dielectric constant, which can reduce the turn-to-turn capacitance, minimize magnetic leakage, and have the highest power-to-volume ratio, high efficiency, and good quality.

[0025] Reference Figure 1-Figure 5The lower iron core 401, the upper iron core 402, the winding column 101 and the plug-in slot 106 are connected by plugging and glued by tape 403. The fixing sleeve 3 and the iron core assembly 4 are connected by sleeve connection. The fixing sleeve 3 and the connecting plate 304 are connected by bolts. The limit block 301 on the inner side of the fixing sleeve 3 can make the overall installation more stable, and the fixing sleeve 3 and the connecting plate 304 are more convenient to install, and form a stable support outside the skeleton 1.

[0026] Reference Figure 1 , Figure 2 and Figure 3 The frame 1 is made of a plastic square frame, a bakelite square frame or a paper board square frame, forming a support and insulation structure inside the winding 2.

[0027] Working principle: The winding 2 of the low distributed capacitance high frequency transformer is composed of a primary coil arranged in the inner circle, a secondary coil arranged in the outer circle, a copper foil electrostatic shielding layer arranged between the primary coil and the secondary coil, and an adhesive tape arranged outside the secondary coil. The distance between the winding layers is increased, thereby reducing the interlayer capacitance. The capacitance between the windings is reduced by increasing the insulation thickness. The clamping groove 103 and the primary coil and the secondary coil are connected by clamping. The terminal 104 and the primary coil and the secondary coil are connected by welding. The primary coil and the secondary coil are both wound by enameled wire, with a low dielectric constant, which can reduce the inter-turn capacitance, minimize the leakage magnetic field, and have a power-to-volume ratio. The highest, high efficiency, good quality, the lower iron core 401, the upper iron core 402 and the winding column 101, the plug-in slot 106 are connected by plugging and glued by tape 403, the fixing sleeve 3 and the iron core assembly 4 are connected by sleeve connection, the fixing sleeve 3 and the connecting plate 304 are connected by bolts, the limit block 301 on the inner side of the fixing sleeve 3 can make the overall installation more stable, the fixing sleeve 3 and the connecting plate 304 are more convenient to install, and a stable support is formed on the outside of the skeleton 1, the skeleton 1 is made of a plastic square skeleton, a bakelite square skeleton or a paper board square skeleton, forming a support and insulation structure inside the winding 2.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low distributed capacitance high frequency transformer, comprising a frame (1), a winding (2), a fixing sleeve (3) and an iron core assembly (4), characterized in that: The middle of the outside of the frame (1) is connected to a winding (2), the outside of the frame (1) and the winding (2) is connected to an iron core assembly (4), and the outside of the iron core assembly (4) is connected to a fixing sleeve (3); The frame (1) is composed of a winding column (101), a bottom plate (102), a clamping groove (103), a terminal (104), an upper baffle (105), a plugging groove (106) and a top plate (107), wherein the bottom plate (102) is provided at the lower end of the winding column (101), the top plate (107) is connected to the upper end of the winding column (101), the upper baffle (105) is provided at the upper end of the top plate (107) and near the middle of the lower end of the bottom plate (102), a plurality of clamping grooves (103) are provided at the front and back of the top plate (107), the terminal (104) is connected to the upper end of the top plate (107) near the front and back, and the plugging groove (106) is provided in the middle of the winding column (101); The fixing sleeve (3) is provided with mounting plates (302) on both sides of the lower end, the fixing sleeve (3) is provided with a limit block (301) on the inner side, a filling plate (303) is provided in the middle of the lower part of the fixing sleeve (3), and the lower end of the fixing sleeve (3) is connected to a connecting plate (304); The iron core assembly (4) consists of a lower iron core (401), an upper iron core (402), and an adhesive tape (403) connected to the outside of the lower iron core (401) and the upper iron core (402).

2. A low distributed capacitance high frequency transformer according to claim 1, characterized in that: The winding (2) comprises a primary coil arranged in an inner circle, a secondary coil arranged in an outer circle, a copper foil electrostatic shielding layer arranged between the primary coil and the secondary coil, and an adhesive tape arranged outside the secondary coil; the clamping groove (103) is connected to the primary coil and the secondary coil by snapping; and the terminal (104) is connected to the primary coil and the secondary coil by welding.

3. A low distributed capacitance high frequency transformer according to claim 2, characterized in that: The primary coil and the secondary coil are both wound by enameled wire.

4. The low distributed capacitance high frequency transformer according to claim 1, characterized in that: The lower iron core (401), the upper iron core (402), the winding column (101), and the plug-in slot (106) are connected by plugging and are tightly bonded by an adhesive tape (403).

5. The low distributed capacitance high frequency transformer according to claim 1, characterized in that: The fixing sleeve (3) and the iron core assembly (4) are connected via a sleeve connection, and the fixing sleeve (3) and the connecting plate (304) are connected via bolts.

6. The low distributed capacitance high frequency transformer according to claim 1, characterized in that: The frame (1) is made of a plastic square frame, a bakelite square frame or a paperboard square frame.

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