Network transformer shell capable of protecting lead
By setting wire troughs and winding pins in the network transformer housing, combined with step and magnetic ring design, the damage problem of leads during automatic winding is solved, and the protection of leads and the improvement of electrical parameters are achieved.
Patent Information
- Application Number
- CN202422240733.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-12
AI Technical Summary
During the automated winding of the coil leads and pins of the existing network transformer housing, the fixture is prone to damage or breaking the leads, and the leads are lacking protection, resulting in additional impact damage.
Wire trenches are set up on the inner walls of both ends of the housing body, and the winding pins are designed to be connected to the pins. The coil leads are arranged in the wire grooves, and steps and magnetic rings are set in the housing body. A coil of specific materials and combinations is used to ensure that the leads are hidden and positioned.
Avoid fixture damage and external impact damage, ensure that the leads are arranged neatly, reduce the resistance value, increase creepage distance and high voltage resistance, and improve the consistency of product electrical parameters.
Smart Images
Figure CN223065949U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, in particular to a network transformer housing capable of protecting leads. Background Art
[0002] In recent years, with the attention of the public and the country to environmental protection, many automobiles have started to use environmental protection energy as the power source of the automobile, such as electric vehicles. When using an electric vehicle, it is necessary to use a network transformer to convert the low voltage of the battery into a high voltage and then supply power to the motor.
[0003] Most of the current network transformer housings are designed with traditional structures. During the automatic winding process of the coil leads and pins, the fixture may damage or break the leads. Since the leads lack protection during the manufacturing process or application, they may suffer additional impact damage. Therefore, it is necessary to propose a network transformer housing capable of protecting the leads. Summary of the Utility Model
[0004] For this reason, the utility model provides a network transformer housing capable of protecting leads to solve the above problems in the prior art.
[0005] In order to achieve the above object, the utility model provides the following technical solutions:
[0006] A network transformer housing capable of protecting leads, including a housing body. Pins are installed at both ends of the housing body. Wire grooves are opened on the inner walls at both ends of the housing body. A winding foot located between the pins and the wire grooves is installed on the upper end surface of the housing body, and the winding foot is connected to the pins. A coil is arranged inside the housing body. Coil leads are arranged in the wire grooves. The free ends of the coil leads extend outside the wire grooves and are connected to the winding foot.
[0007] As a further optimized scheme of the utility model, the wire groove is a right-angle groove with an open top. The depth of the right-angle turning position of the wire groove is greater than the sum of the diameters of the two leads to ensure that the leads are not exposed.
[0008] As a further optimized scheme of the utility model, one side of the bottom of the inner cavity of the housing body has a step, and the coil leads are laid on the step.
[0009] As a further optimized scheme of the utility model, the height of the step is half of the height of the adjacent coil magnetic ring.
[0010] As a further optimized scheme of the utility model, the edges of the step are designed with rounded corners.
[0011] As a further optimized scheme of the utility model, a groove for winding is opened on the side of the winding foot, and the grooves of the winding feet at both ends of the housing body face in opposite directions.
[0012] As a further optimized solution of the present utility model, both the pin and the wire winding pin are made of metal and integrally formed.
[0013] As a further optimized solution of the present utility model, a first magnetic ring and a second magnetic ring adjacent to each other are arranged inside the housing body. Coils are wound on both the first magnetic ring and the second magnetic ring, and leads of the two coils are respectively connected to adjacent wire winding pins.
[0014] As a further optimized solution of the present utility model, coils are wound on both the first magnetic ring and the second magnetic ring, and the coil is composed of a combination of two kinds of wires, including enameled wire and Teflon wire, and the difference in outer diameter between the enameled wire and the Teflon wire is controlled within 0.02 mm.
[0015] The present utility model has the following advantages:
[0016] (1) By opening wire grooves on the inner walls at both ends of the housing body, the leads can be hidden, avoiding the situation that the leads are damaged by the fixture or broken during the automatic winding process, and can also protect the leads from external additional impacts, thus playing a role in protecting the leads;
[0017] (2) Through the combined design of the wire groove and the wire winding pin, the lead layout can be positioned before the automatic winding of the coil lead and the pin, facilitating the subsequent automatic winding operation, and can ensure that the leads are neatly arranged, avoiding damage to the wire caused by manually straightening the leads;
[0018] (3) By opening the wire groove and arranging the leads hidden in the wire groove, it can ensure that the distance from the pin to the coil is the shortest, thereby reducing the resistance value of the product and improving the electrical parameters of the product;
[0019] (4) By arranging steps inside the housing body, it can fully ensure the creepage distance from the lead of the coil to the pin and make the creepage distance of all products consistent; moreover, it can also limit the longitudinal movement of the transformer coil to achieve the purpose of positioning, so as to ensure the safe distance between the transformer coil and the wire winding pin, improve the high-voltage impact resistance of the product, and reduce the probability of arc pulling and fire robbing; it can also improve the consistency of the product process and ensure the consistency of the electrical parameters of the product to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 FIG. is a three-dimensional structural schematic diagram of a network transformer housing capable of protecting leads provided by the present utility model;
[0021] Figure 2 FIG. is a top-view structural schematic diagram of a network transformer housing capable of protecting leads provided by the present utility model;
[0022] Figure 3Schematic diagram of the front sectional structure of a network transformer housing capable of protecting leads provided by the present utility model.
[0023] In the figure: 1, housing body; 2, pins; 3, wire grooves; 4, winding feet; 5, steps. Specific embodiments
[0024] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0025] As Figures 1 - 3 shown, a network transformer housing capable of protecting leads includes a housing body 1. Pins 2 are installed at both ends of the housing body 1. Wire grooves 3 are provided on the inner walls at both ends of the housing body 1. A winding foot 4 located between the pins 2 and the wire grooves 3 is installed on the upper end surface of the housing body 1, and the winding foot 4 is connected to the pins 2. The coil is arranged inside the housing body 1. The coil leads are arranged in the wire grooves 3. The free ends of the coil leads extend outside the wire grooves 3 and are connected to the winding foot 4;
[0026] By providing wire grooves 3 on the inner walls at both ends of the housing body 1, the leads can be hidden, avoiding the situation of the leads being damaged or broken by the fixture during the automatic winding process, and also protecting the leads from external additional impacts, thus playing a role in protecting the leads; through the combined design of the wire grooves 3 and the winding feet 4, the lead layout can be positioned before the automatic winding of the coil leads and the pins, facilitating the subsequent automatic winding operation, and ensuring that the leads are neatly arranged, avoiding damage to the wires caused by manually straightening the leads; by providing the wire grooves 3 and arranging the leads hidden in the wire grooves 3, the shortest distance from the pins 2 to the coil can be ensured, thereby reducing the resistance value of the product and improving the electrical parameters of the product.
[0027] Specifically, the wire groove 3 is a right-angled groove with an open top. The depth at the right-angled turning position of the wire groove 3 is greater than the sum of the diameters of two leads to ensure that the leads are not exposed, so as to hide the leads in the wire groove 3 and protect the leads.
[0028] Specifically, one side of the bottom of the inner cavity of the housing body 1 has a step 5, on which the coil leads are laid, which can fully ensure the creepage distance from the coil leads to the pins 2 and make the creepage distances of all products consistent; moreover, it can also limit the longitudinal movement of the transformer coil to achieve the positioning purpose, so as to ensure the safety distance between the transformer coil and the winding pins 4, improve the high-voltage impact resistance of the product, and reduce the probability of arc pulling and fire robbing; it can also improve the consistency of product processes and ensure the consistency of product electrical parameters to the greatest extent.
[0029] Further, the height of the step 5 is half of the height of the adjacent coil magnetic ring, and the corners of the step 5 are designed with rounded corners, which can ensure that the coil will not move and will not cause the coil tail wire to be damaged due to the too high step.
[0030] Specifically, the side of the winding pin 4 is provided with a groove for winding, and the grooves of the winding pins 4 at both ends of the housing body 1 face in opposite directions.
[0031] Specifically, both the pins 2 and the winding pins 4 are made of metal and are integrally formed.
[0032] Further, as Figure 1 shown, the number of pins 2 is six and they are symmetrically distributed on both side end faces of the housing body 1, with three pins 2 evenly distributed on each side, and the number of winding pins 4 is the same as that of the pins 2 and they correspond one by one.
[0033] In this embodiment, a first magnetic ring and a second magnetic ring adjacent to each other are arranged in the housing body 1, coils are wound on both the first magnetic ring and the second magnetic ring, and the leads of the two coils are respectively connected to the adjacent winding pins 4;
[0034] Specifically, coils are wound on both the first magnetic ring and the second magnetic ring, and the coil is composed of a combination of two kinds of wires, including an enameled wire with a copper core diameter of 0.114 mm and a Teflon wire with a copper core diameter of 0.1 mm, and the outer diameter difference between the enameled wire and the Teflon wire is controlled within 0.02 mm, which solves the problem of easy wire breakage due to inconsistent tension during the automatic winding process by the automatic winding machine. At the same time, the combination of the two kinds of wires can improve the insulation and heat resistance performance of the coil;
[0035] When winding the coil, it is necessary to prepare two enameled wires of different colors and two gum wires of different colors. After the four wires are twisted together, they are wound 12 times on the magnetic ring, and then the surface wires and bottom wires of the two enameled wires are drawn out and wound 8 times on the small magnetic ring;
[0036] The purpose of using the enameled wire and the gum wire is to control the outer diameter difference of the 4 wires within 0.02 mm as much as possible; the purpose of using the gum wire is to improve the high-voltage resistance of the product to the greatest extent and avoid situations such as wire slipping and wire damage during the automatic winding process. There are requirements for the twisting during the winding process. The purpose is to ensure good network parameters of the product without over-twisting and causing wire breakage.
Claims
1. A network transformer housing capable of protecting leads, comprising a housing body (1), characterized in that, Pin feet (2) are installed at both ends of the shell body (1). Wire grooves (3) are provided on the inner walls at both ends of the shell body (1). A wire winding foot (4) located between the pin feet (2) and the wire grooves (3) is installed on the upper end surface of the shell body (1), and the wire winding foot (4) is connected to the pin feet (2). A coil is arranged inside the shell body (1), coil leads are arranged in the wire grooves (3), and the free ends of the coil leads extend outside the wire grooves (3) and are connected to the wire winding feet (4).
2. The network transformer housing capable of protecting leads according to claim 1, characterized in that, The wire groove (3) is a right-angled groove with an open top. The depth at the right-angled turning position of the wire groove (3) is greater than the sum of the diameters of the two leads to ensure that the leads are not exposed.
3. The network transformer housing capable of protecting the lead wire according to claim 1, characterized in that, One side of the bottom of the inner cavity of the shell body (1) has a step (5), and the coil leads are laid on the step (5).
4. The network transformer housing capable of protecting the lead wire according to claim 3, characterized in that, The height of the step (5) is half of the height of the adjacent coil magnetic ring.
5. The network transformer housing capable of protecting leads according to claim 3, characterized in that, The edges and corners of the step (5) are designed with rounded corners.
6. A network transformer housing capable of protecting leads according to claim 1, characterized in that, A groove for wire winding is provided on the side of the wire winding foot (4), and the grooves of the wire winding feet (4) at both ends of the shell body (1) face in opposite directions.
7. A network transformer housing capable of protecting leads according to any one of claims 1-6, characterized in that, Both the pin feet (2) and the wire winding feet (4) are made of metal and are integrally formed.
8. A network transformer housing capable of protecting leads, according to any one of claims 1-6, characterized in that A first magnetic ring and a second magnetic ring adjacent to each other are arranged inside the shell body (1). Coils are wound on both the first magnetic ring and the second magnetic ring, and the leads of the two coils are respectively connected to the adjacent wire winding feet (4).
9. The network transformer housing capable of protecting the lead wire according to claim 8, characterized in that, Coils are wound on both the first magnetic ring and the second magnetic ring, and the coil is composed of a combination of two kinds of wires, including enameled wire and Teflon wire, and the outer diameters of the enameled wire and the Teflon wire are the same.