Transformer with efficient wiring structure

Abstract

The utility model discloses a transformer with a high-efficiency wiring structure, which comprises a framework, a coil wound on the framework and a magnetic core piece which is arranged on the framework and is matched with the coil to generate electromagnetic induction, and the framework is also provided with pins connected with the coil, a core shaft portion which can be inserted into the framework and is located in the center of the coil is arranged on the magnetic core piece, the framework comprises a sleeve, a first terminal portion and a second terminal portion, the middle of the sleeve is used for winding the coil, and the first terminal portion and the second terminal portion are formed at the two ends of the sleeve and used for installing the pins. And the pin is provided with a spiral groove for facilitating winding and welding of a lead. The pin is provided with the spiral groove, so that the lead can be conveniently fixed, the connection stability can be improved, the connection strength between the pin and the first terminal part as well as the pin and the second terminal part can be improved through the spiral groove in the pin, and the situation that the pin is in integrated injection molding, clamping connection or threaded connection is avoided.

Description

Technical field:

[0001] The utility model relates to the technical field of transformers, in particular to a transformer with a high-efficiency wiring structure. Background technology:

[0002] A small transformer is an electrical device that converts one voltage to another voltage through the principle of electromagnetic induction. It is widely used in electronic equipment, lighting systems, communication equipment, and household appliances. Its basic structure includes two or more windings and a magnetic core. The windings are usually divided into primary windings and secondary windings. When the alternating current passes through the primary winding, the alternating magnetic field generated forms an alternating magnetic flux in the core, which induces an electromotive force in the secondary winding, thereby realizing voltage conversion. The voltage change of the transformer is proportional to the turns ratio of the primary and secondary windings, that is, by adjusting the turns ratio, high-voltage alternating current can be converted into low-voltage direct current, or low-voltage electricity can be converted into high-voltage electricity. The functions of small transformers are not limited to voltage conversion, but also include power transmission and signal coupling to ensure the stable operation of various electronic equipment and systems. Its compact structure, high efficiency, and strong reliability make it an indispensable core component in modern electrical and electronic applications.

[0003] The utility model patent with Chinese patent application number 201921882360.3 discloses a transformer structure, which is the same as the traditional transformers on the market, including a shell 1, an iron core 2, a terminal seat 3, a pin 4, etc. However, in the scheme disclosed in the patent, since the shell 1 and the terminal seat 3 are separated, and the terminal seat 3 is fixed to the pin 4 by a fixed block and a movable block 7, although this method can make the pin 4 installed more firmly, it also increases the complexity of the structure, which not only increases the cost, but also fails to quickly and effectively position the lead, reducing the installation efficiency.

[0004] In view of this, the inventor proposes the following technical solution. Utility model content:

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a transformer with a high-efficiency wiring structure.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: a transformer with an efficient wiring structure, comprising: a skeleton, a coil wound on the skeleton, a magnetic core installed on the skeleton and a pin arranged on the skeleton and connected to the coil, the skeleton comprising a sleeve in the middle for winding the coil and a first terminal part and a second terminal part formed at both ends of the sleeve and for installing the pins, the first terminal part and the second terminal part are respectively provided with a plurality of first wire grooves and second wire grooves for positioning and guiding the lead wires, and the lead wires of the coil extend out from both ends of the sleeve and are wound around the pins; the pins are provided with spiral grooves for facilitating lead wire winding and welding.

[0007] Furthermore, in the above technical solution, the first terminal portion and the second terminal portion are symmetrically located at two ends of one side of the sleeve, and the end of the sleeve is provided with a first connecting block and a second connecting block protruding outward and used to support the first terminal portion and the second terminal portion; the other side of the sleeve is provided with a third terminal portion and a fourth terminal portion symmetrical to the first connecting block and the second connecting block.

[0008] Furthermore, in the above technical solution, the magnetic core member includes a frame that can be buckled on the outside of the skeleton, a core shaft portion arranged at the center of the frame and capable of being inserted into the sleeve, and a first positioning plate and a second positioning plate arranged on the inner wall of the frame and used to support the core shaft portion, and the first positioning plate and the second positioning plate can be docked and located between the first connecting block and the third terminal portion or between the second connecting block and the fourth terminal portion.

[0009] Furthermore, in the above technical solution, an outer circular contact surface of the core shaft portion is reserved between the first positioning plate and the second positioning plate, and the ends of the first connecting block, the second connecting block, the third terminal portion and the fourth terminal portion are all provided with arc-shaped groove surfaces for docking and positioning with the outer circular contact surface.

[0010] Furthermore, in the above technical solution, the arc-shaped groove surfaces of the first connecting block, the second connecting block, the third terminal part and the fourth terminal part are provided with a first positioning contour surface and a second positioning contour surface extending toward the outer edge of the sleeve on both sides, and the first positioning contour surface and the second positioning contour surface are in contact with at least one of the side walls of the first positioning plate and the second positioning plate for positioning.

[0011] Furthermore, in the above technical solution, the pins are arranged on the first partitions on both sides of the first wire groove, and on the second partitions on both sides of the second wire groove.

[0012] Furthermore, in the above technical solution, the pins are distributed along the radial direction of the sleeve and are arranged on the first partition plate and the second partition plate.

[0013] Furthermore, in the above technical solution, the first partition plate and the second partition plate are respectively provided with a first mounting hole and a second mounting hole for mounting pins.

[0014] Furthermore, in the above technical solution, the pins are fixed to the first partition plate and the second partition plate by integral injection molding.

[0015] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art: the utility model adopts the arrangement of spiral grooves on the pins, which not only facilitates the fixation of the leads and improves the stability of the connection, but also the spiral grooves on the pins can enhance the strength of the connection between the pins and the first terminal portion and the second terminal portion, regardless of whether the pins are formed by one-piece injection molding, or connected by a clamping connection, or connected by a thread. Secondly, the coil is wound on the skeleton, and the core shaft portion of the magnetic core is inserted into the center of the coil to meet the electromagnetic induction structure. At this time, the coil is not directly wound on the core shaft portion, but is wound on the skeleton, which not only achieves the purpose of insulation, but also greatly improves the heat dissipation effect. Moreover, this structure is mechanically stable and can ensure a long service life. Description of the drawings:

[0016] Figure 1 It is a reference diagram of the use state of the utility model;

[0017] Figure 2 It is an exploded diagram of the utility model in use state;

[0018] Figure 3 This is an assembly structure diagram of the utility model in use state;

[0019] Figure 4 It is a three-dimensional diagram of the elastic bayonet in the utility model;

[0020] Figure 5 It is a three-dimensional diagram of the utility model;

[0021] Figure 6 It is a three-dimensional diagram of the magnetic core member in the utility model;

[0022] Figure 7 It is a three-dimensional diagram of the pins in the utility model;

[0023] Figure 8 It is a cross-sectional view of the skeleton in the utility model. Specific implementation method:

[0024] The utility model is further described below in conjunction with specific embodiments and drawings.

[0025] See Figures 1 to 8As shown, a transformer with an efficient wiring structure includes a skeleton 1, a coil 2 wound on the skeleton 1, a magnetic core 3 installed on the skeleton 1, and a pin 4 arranged on the skeleton 1 and connected to the coil 2. The skeleton 1 includes a sleeve 11 in the middle for winding the coil 2 and a first terminal part 12 and a second terminal part 13 formed at both ends of the sleeve 11 and used to install the pin 4. The first terminal part 12 and the second terminal part 13 are respectively provided with a plurality of first wire grooves 121 and a second wire groove 131 for positioning and guiding the lead 21, and the lead 21 of the coil 2 extends out from both ends of the sleeve 11 and is wound on the pin 4; the pin 4 is provided with a spiral groove 41 for facilitating the winding and welding of the lead 21. A first wire groove 121 and a second wire groove 131 for positioning the lead 21 are respectively provided on the first terminal portion 12 and the second terminal portion 13, and a spiral groove 41 is provided on the pin 4. Not only can the lead 21 be quickly installed and fixed in place to improve the installation efficiency and the stability of the connection, but the spiral groove 41 on the pin 4 can also improve the strength of the connection between the pin 4 and the first terminal portion 12 and the second terminal portion 13. It is not theoretically possible for the pin 4 to be formed by integral injection molding, or to be connected by a snap-in connection, or to be connected by a thread.

[0026] Secondly, the magnetic core piece 3 is provided with a core shaft portion 31 which can be inserted into the skeleton 1 and is located at the center of the coil 2. By winding the coil 2 on the skeleton 1 and inserting the core shaft portion 31 of the magnetic core piece 3 into the center of the coil 2, it satisfies the electromagnetic induction structure. At this time, the coil 2 is not directly wound on the core shaft portion 31, but is wound on the skeleton 1. Not only the insulation purpose is achieved, the heat dissipation effect is also greatly improved, and this structure is mechanically stable and can ensure a long service life.

[0027] The first and second positioning grooves 124, 134 for positioning the lead 21 are respectively provided on the side walls of the first and second wire grooves 121, 131. The first and second positioning grooves 124, 134 are used to quickly position the lead 21 during installation, which can not only further improve the installation efficiency, but also after the lead 21 is welded and fixed to the pin 4, the lead 21 is fixed by the first and second positioning grooves 124, 134, ensuring that it can be stably fixed in the first and second wire grooves 121, 131.

[0028] The first terminal portion 12 and the second terminal portion 13 are symmetrically located at two ends of one side of the sleeve 11, and the end of the sleeve 11 is provided with a first connecting block 14 and a second connecting block 15 protruding outward and used to support the first terminal portion 12 and the second terminal portion 13; the other side of the sleeve 11 is provided with a third terminal portion 16 and a fourth terminal portion 17 symmetrical to the first connecting block 14 and the second connecting block 15.

[0029] The magnetic core member 3 includes a frame 33 that can be buckled on the outside of the frame 1, a core shaft portion 31 arranged at the center of the frame 33 and capable of being inserted into the sleeve 11, and a first positioning plate 34 and a second positioning plate 35 arranged on the inner wall of the frame 33 and used to support the core shaft portion 31, and the first positioning plate 34 and the second positioning plate 35 can be docked and located between the first connection block 14 and the third terminal portion 16 or between the second connection block 15 and the fourth terminal portion 17. The first positioning plate 34 and the second positioning plate 35 are symmetrically located at one end of the inner wall of the frame 33 to support the core shaft portion 31, and a positioning cavity 30 for docking with the frame 1 and accommodating the coil 2 is formed between the core shaft portion 31 and the inner wall of the frame 33.

[0030] An outer circumferential contact surface A of the core shaft portion 31 is reserved between the first positioning plate 34 and the second positioning plate 35, and the ends of the first connecting block 14, the second connecting block 15, the third terminal portion 16 and the fourth terminal portion 17 are all provided with arc-shaped groove surfaces B for docking and positioning with the outer circumferential contact surface A. By providing the arc-shaped groove surfaces B at the ends of the first connecting block 14, the second connecting block 15, the third terminal portion 16 and the fourth terminal portion 17, the magnetic core member 3 can be quickly positioned when it is buckled onto the frame 1, and the installation direction of the magnetic core member 3 is ensured to be accurate.

[0031] The first and second positioning contour surfaces B1 and B2 extending toward the outer edge of the sleeve 11 are provided on both sides of the arc-shaped groove surface B of the first connection block 14, the second connection block 15, the third terminal portion 16, and the fourth terminal portion 17, and the first and second positioning contour surfaces B1 and B2 are in contact with and pressed against at least one of the side walls of the first and second positioning plates 34 and 35 for positioning. The first and second positioning contour surfaces B1 and B2 of the arc-shaped groove surface B are in contact with and pressed against the side walls of the first and second positioning plates 34 and 35 to ensure that the magnetic core member 3 will not be offset or shaken after being installed on the frame 1, and to ensure that the magnetic core member 3 will not be displaced due to impact during subsequent use, thereby greatly improving the stability and life of the transformer.

[0032] The pins 4 are arranged on the first partitions 122 on both sides of the first wire groove 121, and on the second partitions 132 on both sides of the second wire groove 131. The pins 4 are arranged on the first partitions 122 and the second partitions 132 along the radial direction of the sleeve 11. The first partitions 122 and the second partitions 132 are respectively provided with first mounting holes 123 and second mounting holes 133 for mounting the pins 4. The pins 4 are fixed to the first partitions 122 and the second partitions 132 by integral injection molding.

[0033] In one embodiment, two magnetic core pieces 3 are provided and symmetrically buckled and installed on the frame 1, and the two magnetic core pieces 3 are fixedly connected by a plurality of elastic bayonet pins 5. The use of the elastic bayonet pins 5 to buckle the two magnetic core pieces 3 together not only greatly improves the installation efficiency and makes the assembly easier and more portable, but also eliminates the need for welding and improves the assembly stability.

[0034] The elastic bayonet 5 includes a central axis 51 and a first elastic arm 52 and a second elastic arm 53 provided at both ends of the central axis 51 and capable of being elastically inserted into the magnetic core 3. At least one first locking hole 32 for inserting the first elastic arm 52 and the second elastic arm 53 is provided on the opposite end surfaces of the magnetic core 3. The elastic bayonet 5 is provided with a double-head locking structure, and the first elastic arm 52 and the second elastic arm 53 at both ends of the central axis 51 are respectively inserted into the first locking holes 32 of the two magnetic cores 3, so that the two magnetic cores 3 are assembled together.

[0035] Four first elastic arms 52 and second elastic arms 53 are respectively provided at both ends of the middle axis 51, and are symmetrically distributed in a matrix, so that they can be folded and inserted into the first clamping hole 32 after contacting the first clamping hole 32. By providing four first elastic arms 52 and second elastic arms 53 respectively and symmetrically distributed at both ends of the middle axis 51, two structures similar to explosive screws are formed at both ends of the elastic clamping pin 5. After the two ends of the elastic clamping pin 5 are respectively inserted into the first clamping holes 32 of the two magnetic core pieces 3, the first elastic arms 52 and the second elastic arms 53 will be elastically clamped with the inner wall of the first clamping hole 32, so that the two magnetic core pieces 33 can be symmetrically fastened together, and then tightly fixed on the frame 1. Of course, in order to increase the stability of the connection between the magnetic core component 3 and the elastic latch 5, a threaded groove or a latching groove can be added on the inner wall of the first latching hole 32 to increase the friction between the first elastic arm 52 and the second elastic arm 53 and the first latching hole 32, and a barbed latching structure can be formed under the elastic force of the first elastic force arm 52 and the second elastic force arm 53 to achieve a stable connection between the magnetic core component 3 and the elastic latch 5.

[0036] The middle parts of the first elastic arm 52 and the second elastic arm 53 protrude from the outer wall of the middle axis 51, and the ends of the first elastic arm 52 and the second elastic arm 53 are located inside the outer wall of the middle axis 51, so that the outer walls of the first elastic arm 52 and the second elastic arm 53 form a first transition cone 54 and a second transition cone 55 with an angle of 120°. A first gap 56 is formed between the four first elastic arms 52 for embracing each other and shrinking, and the first gap 56 is in a "cross" shape; a second gap 57 is formed between the four second elastic arms 53 for embracing each other and shrinking, and the second gap 57 is in a "cross" shape. The elastic bayonet 5 is made of plastic. In one embodiment, four elastic bayonet pins 5 are used to connect the two magnetic core pieces 3, and the four elastic bayonet pins 5 are located at the four corners of the magnetic core piece 3 to ensure the stability of the magnetic core piece 3 when docked and fastened.

[0037] In summary, in the present invention, the coil 2 bracket is wound on the sleeve 11 of the skeleton 1, and the first terminal part 12 and the second terminal 13 are set at both ends of the sleeve 11 to fix the pin 4. After the coil 2 is wound, the lead 21 is wound on the pin 4. The stability of the connection between the lead 21 and the pin 4 is increased by setting a spiral groove 41 on the pin 4, so that the lead 21 is positioned on the pin 4, and the spiral groove 41 can greatly improve the tensile strength of the lead 21 after welding, ensuring the service life of the transformer. Secondly, two magnetic core pieces 3 are symmetrically buckled and installed on the skeleton 1, and the core shaft part 31 of the magnetic core piece 3 is inserted into the sleeve 11 to meet the magnetic induction requirements of the coil 2. The use of the plastic skeleton 1 can not only ensure effective insulation, but also improve the heat dissipation effect.

[0038] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A transformer with an efficient wiring structure, comprising a frame (1), a coil (2) wound on the frame (1), a magnetic core (3) mounted on the frame (1), and pins (4) arranged on the frame (1) and connected to the coil (2), characterized in that: The frame (1) comprises a sleeve (11) in the middle for winding a coil (2), and a first terminal portion (12) and a second terminal portion (13) formed at both ends of the sleeve (11) and used for mounting pins (4); the first terminal portion (12) and the second terminal portion (13) are respectively provided with a plurality of first wire grooves (121) and second wire grooves (131) for positioning and guiding the lead wire (21), and the lead wire (21) of the coil (2) extends out from both ends of the sleeve (11) and is wound around the pins (4); the pins (4) are provided with spiral grooves (41) for facilitating the winding and welding of the lead wire (21).

2. The transformer with a high-efficiency wiring structure according to claim 1, characterized in that: The first terminal portion (12) and the second terminal portion (13) are symmetrically located at two ends of one side of the sleeve (11), and the end of the sleeve (11) is provided with a first connecting block (14) and a second connecting block (15) protruding outward and used to support the first terminal portion (12) and the second terminal portion (13); the other side of the sleeve (11) is provided with a third terminal portion (16) and a fourth terminal portion (17) symmetrical to the first connecting block (14) and the second connecting block (15).

3. The transformer with a high-efficiency wiring structure according to claim 2, characterized in that: The magnetic core member (3) comprises a frame (33) capable of being buckled onto the outside of the frame (1), a core shaft portion (31) arranged at the center of the frame (33) and capable of being inserted into the sleeve (11), and a first positioning plate (34) and a second positioning plate (35) arranged on the inner wall of the frame (33) and used to support the core shaft portion (31), and the first positioning plate (34) and the second positioning plate (35) can be docked and positioned between the first connecting block (14) and the third terminal portion (16) or between the second connecting block (15) and the fourth terminal portion (17).

4. The transformer with a high-efficiency wiring structure according to claim 3, characterized in that: An outer circular contact surface (A) of the core shaft portion (31) is reserved between the first positioning plate (34) and the second positioning plate (35), and the ends of the first connecting block (14), the second connecting block (15), the third terminal portion (16) and the fourth terminal portion (17) are all provided with arc-shaped groove surfaces (B) for docking and positioning with the outer circular contact surface (A).

5. The transformer with a high-efficiency wiring structure according to claim 4, characterized in that: A first positioning contour surface (B1) and a second positioning contour surface (B2) extending toward the outer edge of the sleeve (11) are provided on both sides of the arc-shaped groove surface (B) of the first connecting block (14), the second connecting block (15), the third terminal portion (16) and the fourth terminal portion (17), and the first positioning contour surface (B1) and the second positioning contour surface (B2) are in contact with at least one of the side walls of the first positioning plate (34) and the second positioning plate (35) for positioning.

6. A transformer with a high-efficiency wiring structure according to any one of claims 1 to 5, characterized in that: The pins (4) are arranged on the first partition plates (122) on both sides of the first wire groove (121), and on the second partition plates (132) on both sides of the second wire groove (131).

7. The transformer with a high-efficiency wiring structure according to claim 6, characterized in that: The pins (4) are distributed along the radial direction of the sleeve (11) and are arranged on the first partition plate (122) and the second partition plate (132).

8. The transformer with a high-efficiency wiring structure according to claim 7, characterized in that: The first partition plate (122) and the second partition plate (132) are respectively provided with a first mounting hole (123) and a second mounting hole (133) for mounting pins (4).

9. The transformer with a high-efficiency wiring structure according to claim 7, characterized in that: The pins (4) are fixed to the first partition plate (122) and the second partition plate (132) by integral injection molding.

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