Transformer with enhanced stability

Abstract

The transformer comprises a framework, a coil wound on the framework and a pin arranged on the framework and connected with the coil, the framework comprises a sleeve, a first terminal portion and a second terminal portion, the first terminal portion and the second terminal portion are formed at the two ends of the sleeve, and a lead of the coil extends out of the two ends of the sleeve and is wound on the pin. The first terminal part and the second terminal part are respectively provided with a plurality of first wire grooves and second wire grooves which are used for positioning and guiding leads, and the side walls of the first wire grooves and the second wire grooves are respectively provided with first positioning grooves and second positioning grooves which are used for positioning the leads. The first wire groove and the second wire groove are formed in the two ends of the framework to guide the lead of the coil to extend out and be connected with the pins, and the lead is positioned through the first positioning groove and the second positioning groove, so that after the lead and the pins are welded and fixed, the lead is clamped and fixed; and it is ensured that the cable can be stably fixed in the first wiring trough and the second wiring trough.

Description

Technical field:

[0001] The utility model relates to the technical field of transformers, in particular to a transformer with enhanced stability. 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 block 3, a pin 4, etc. However, in the transformers on the market, since the lead 5 of the coil is connected to the pin 4, and the shell 1 usually lacks a structure for positioning the lead 5, the lead 5 is in an active state after extending from the coil. When the length of the lead 5 is too long, the lead 5 will become loose, and during use, the lead 5 will contact each other, causing heating, melting or short circuit.

[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 enhanced stability.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: a transformer with enhanced stability, comprising: a skeleton, a coil wound on the skeleton and a pin arranged on the skeleton and connected to the coil, wherein the skeleton includes 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 used for installing the pin, the lead wires of the coil extend out from both ends of the sleeve and are wound around the pins, and it is characterized in that: a plurality of first wire grooves and second wire grooves for positioning and guiding the lead wires are respectively arranged on the first terminal part and the second terminal part, and a first positioning groove and a second positioning groove for positioning the lead wires are respectively arranged on the side walls of the first wire groove and the second wire groove.

[0007] Furthermore, in the above technical solution, the pins are installed on the first partitions on both sides of the first wire groove and the second partitions on both sides of the second wire groove, and the first positioning grooves and the second positioning grooves are respectively distributed on the side walls of the first partition and the second partition.

[0008] Furthermore, in the above technical solution, the pins are installed on the first partition plate and the second partition plate along the radial distribution of the sleeve, and one end of the first positioning groove and the second positioning groove respectively extends from the bottom of the first wire groove and the second wire groove to the sleeve, and the other end of the first positioning groove and the second positioning groove respectively extends from the slot opening of the first wire groove and the second wire groove to the periphery of the pins.

[0009] 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 installing pins, and the other ends of the first positioning groove and the second positioning groove extend from the grooves of the first wire groove and the second wire groove to the periphery of the first mounting hole and the second mounting hole respectively.

[0010] Furthermore, in the above technical solution, the pins are fixed to the first partition plate and the second partition plate by integral injection molding.

[0011] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: in the utility model, a first wire groove and a second wire groove are set at both ends of the skeleton to guide the extension of the lead of the coil and the connection with the pin, and a first positioning groove and a second positioning groove are set on the side walls of the first wire groove and the second wire groove to position the lead, so that after the lead and the pin are welded and fixed, the lead is fixed in place to ensure that it can be stably fixed in the first wire groove and the second wire groove. Description of the drawings:

[0012] Figure 1 It is a reference diagram of the use state of the utility model;

[0013] Figure 2 It is an exploded diagram of the utility model in use state;

[0014] Figure 3 This is an assembly structure diagram of the utility model in use state;

[0015] Figure 4 It is a three-dimensional diagram of the elastic bayonet in the utility model;

[0016] Figure 5 It is a three-dimensional diagram of the utility model;

[0017] Figure 6 It is a three-dimensional diagram of the magnetic core member in the utility model;

[0018] Figure 7 It is a three-dimensional diagram of the pins in the utility model;

[0019] Figure 8 This is another embodiment of the first positioning groove and the second positioning groove of the utility model. Specific implementation method:

[0020] The utility model is further described below in conjunction with specific embodiments and drawings.

[0021] See Figures 1 to 7 As shown, a transformer with enhanced stability includes: a skeleton 1, a coil 2 wound on the skeleton 1, and a pin 4 arranged on the skeleton 1 and connected to the coil 2, wherein the skeleton 1 includes a sleeve 11 in the middle for winding the coil 2 and a first terminal portion 12 and a second terminal portion 13 formed at both ends of the sleeve 11 and used to install the pin 4, the lead 21 of the coil 2 extends out from both ends of the sleeve 11 and is wound on the pin 4, the first terminal portion 12 and the second terminal portion 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 side walls of the first wire groove 121 and the second wire groove 131 are respectively provided with first positioning grooves 124 and a second positioning groove 134 for positioning the lead 21. A first wire groove 121 and a second wire groove 131 are provided at both ends of the skeleton 1 to guide the lead 21 of the coil 2 to extend and connect with the pin 4, and a first positioning groove 124 and a second positioning groove 134 are provided on the side walls of the first wire groove 121 and the second wire groove 131 to position the lead 21, so that after the lead 21 is welded and fixed to the pin 4, the lead 21 is fixed in place to ensure that it can be stably fixed in the first wire groove 121 and the second wire groove 131.

[0022] The pins 4 are installed on the first partitions 122 on both sides of the first wire groove 121 and the second partitions 132 on both sides of the second wire groove 131, and the first positioning grooves 124 and the second positioning grooves 134 are respectively distributed on the side walls of the first partitions 122 and the second partitions 132.

[0023] See Figure 8As shown, in one embodiment, the pin 4 is installed on the first partition plate 122 and the second partition plate 132 along the radial distribution of the sleeve 11, and one end of the first positioning groove 124 and the second positioning groove 134 respectively extends from the bottom of the first wire groove 121 and the second wire groove 131 to the sleeve 11, and the other end of the first positioning groove 124 and the second positioning groove 134 respectively extends from the notch of the first wire groove 121 and the second wire groove 131 to the periphery of the pin 4.

[0024] 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 the pin 4, and the other ends of the first positioning groove 124 and the second positioning groove 134 extend from the notches of the first wire groove 121 and the second wire groove 131 to the periphery of the first mounting hole 123 and the second mounting hole 133 respectively.

[0025] The pins 4 are fixed to the first partition plate 122 and the second partition plate 132 by integral injection molding.

[0026] In one embodiment, a magnetic core piece 3 is also installed on the skeleton 1. The magnetic core piece 3 is provided with a core shaft portion 31 that can be inserted into the skeleton 1 and located at the center of the coil 2. Two magnetic core pieces 3 are provided and symmetrically buckled and installed on the skeleton 1, and the two magnetic core pieces 3 are fixedly connected by multiple elastic bayonet pins 5. The coil 2 is wound on the skeleton 1, and the core shaft portion 31 of the magnetic core piece 3 is inserted into the center of the coil 2 to meet 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 does it achieve the purpose of insulation, but the heat dissipation effect is also greatly improved. Moreover, this structure is mechanically stable and can ensure a long service life. Secondly, the two magnetic core pieces 3 are buckled together using elastic bayonet pins 5, which not only greatly improves the installation efficiency and makes the assembly simpler and more portable, but also does not require welding, and the assembly stability is better.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] The pin 4 is provided with a spiral groove 41 for facilitating the winding and welding of the lead wire 21 .

[0031] 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.

[0032] 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 34 can be docked and clamped 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.

[0033] 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.

[0034] 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.

[0035] To sum up, when assembling the utility model, the coil 2 needs to be wound on the sleeve 11 in the middle of the skeleton 1 first, and the lead 21 in the coil 2 is led out from both sides of the skeleton 1 and wound around the pin 4 through the first wire groove 121 and the second wire groove 131, and the lead 21 is positioned by the first positioning groove 124 and the second positioning groove 134, so that after the lead 21 is welded and fixed to the pin 4, the lead 21 is fixed in place to ensure that it can be stably fixed in the first wire groove 121 and the second wire groove 131; further, four elastic bayonet pins 5 are inserted into the first positioning hole 32 of a magnetic core piece 3, and the magnetic core piece 3 is buckled onto the skeleton 1 so that the core shaft portion 31 in the middle is inserted into the sleeve 11, and then another magnetic core piece 3 is buckled onto the skeleton 1 in the same way, and by tightening the two magnetic core pieces 3, the elastic bayonet pins 5 are inserted into the two magnetic core pieces 3, thereby achieving a stable connection between the two magnetic core pieces 3.

[0036] 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 enhanced stability, comprising a frame (1), a coil (2) wound on the frame (1), and pins (4) arranged on the frame (1) and connected to the coil (2), wherein: The skeleton (1) comprises 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 for mounting pins (4). 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 skeleton (1) is characterized in that: the first terminal part (12) and the second terminal part (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 side walls of the first wire grooves (121) and the second wire grooves (131) are respectively provided with first positioning grooves (124) and second positioning grooves (134) for positioning the lead wire (21).

2. A transformer with enhanced stability according to claim 1, characterized in that: The pins (4) are installed on the first partition (122) on both sides of the first wire groove (121) and on the second partition (132) on both sides of the second wire groove (131), and the first positioning groove (124) and the second positioning groove (134) are respectively distributed on the side walls of the first partition (122) and the second partition (132).

3. A transformer with enhanced stability according to claim 2, characterized in that: The pins (4) are installed on the first partition (122) and the second partition (132) along the radial distribution of the sleeve (11), and one end of the first positioning groove (124) and the second positioning groove (134) respectively extends from the bottom of the first wire groove (121) and the second wire groove (131) to the sleeve (11), and the other end of the first positioning groove (124) and the second positioning groove (134) respectively extends from the notch of the first wire groove (121) and the second wire groove (131) to the periphery of the pin (4).

4. A transformer with enhanced stability according to claim 3, 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 the pin (4); the other ends of the first positioning groove (124) and the second positioning groove (134) extend from the groove openings of the first wire groove (121) and the second wire groove (131) to the periphery of the first mounting hole (123) and the second mounting hole (133).

5. A transformer with enhanced stability according to claim 3, characterized in that: The pins (4) are fixed to the first partition plate (122) and the second partition plate (132) by integral injection molding.

Images