Transformer with improved safety distance and magnetic shield structure

Abstract

The utility model discloses a transformer of improving safety distance and magnetic shielding structure, include: transformer body and be located on the base of transformer body, the base whole is set as two parts of up and down, the high temperature isolation membrane is fixed with between two parts of up and down of base, the utility model has following beneficial effect: through metal shield case and high temperature isolation membrane, realize using the high temperature isolation membrane of sleeve, in the process, can remove the magnetic core fixing adhesive tape and the magnetic core back adhesive, and on the structure, better increase the safety distance between primary and secondary, satisfy the safety requirement, the use of peripheral metal shield case, reduced the manufacturing process of manual package peripheral copper foil, also more effectively shield effect to product on the performance of EMI, satisfy the requirement of customer, the adjustment of two processes, greatly reduce the loss of artificial working hours, improve the production speed of worker, speed up the production progress, also greatly improve the production efficiency as a whole.

Description

Technical Field

[0001] This utility model relates to the field of electronic transformers, and in particular to a transformer with improved safety distance and magnetic shielding structure. Background Technology

[0002] Current EFD (Flat Design Ferrite Core) series products increase the safety distance between the primary and secondary windings (the minimum physical isolation distance that must be met between the primary winding (input high voltage side) and the secondary winding (output low voltage side) of the transformer to ensure electrical safety) and control EMI (unintended electromagnetic noise generated by the transformer during operation) through the production process of core back adhesive and copper foil outer shielding. However, the manufacturing efficiency is extremely low, which seriously increases the labor cost of production. Utility Model Content

[0003] The purpose of this invention is to provide a transformer with improved safety distance and magnetic shielding structure, thereby solving the problem of low manufacturing efficiency.

[0004] To achieve this objective, the present invention adopts the following technical solution: A transformer with improved safety distance and magnetic shielding structure, comprising: The transformer body and the base disposed on the transformer body are configured as upper and lower parts. A high-temperature isolation membrane is fixed between the upper and lower parts of the base. A metal shield is fixed on the top of the base. A magnetic core is disposed inside the metal shield. The bottom of the magnetic core is fixedly connected to the base. Multiple first terminals are electrically connected to the bottom of the base.

[0005] Furthermore, the diameter of the magnetic core is smaller than the diameter of the base.

[0006] Furthermore, the bottom of the metal shield is an open structure, and the metal shield is fitted over the outside of the magnetic core.

[0007] Furthermore, an adjustment frame is fitted around the base, and a distance is set between the adjustment frame and the base.

[0008] Furthermore, a plurality of second terminals are fixedly provided on the outside of the adjustment frame near the bottom.

[0009] Furthermore, a protrusion is formed on the inner wall of the adjustment frame around its center, and one side of the protrusion is in contact with the base.

[0010] Furthermore, a damping element is provided between the protrusion and the base.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. By using a metal shielding cover and a high-temperature isolation film, an insert-type high-temperature isolation film is achieved. In terms of process, the magnetic core fixing tape and magnetic core back adhesive can be eliminated. Structurally, the safety distance between the primary and secondary windings is better increased to meet safety regulations. The use of an outer metal shielding cover reduces the manual process of wrapping the outer copper foil and also more effectively shields the product in terms of EMI performance, meeting customer requirements. The adjustment of these two processes greatly reduces the loss of manual labor time, increases the production speed of workers, speeds up the production progress, and greatly improves overall production efficiency.

[0012] 2. The height of the adjustment frame can be adjusted to adjust the height of the second terminal. Adjusting the height of the second terminal keeps it away from the metal parts outside the top of the transformer, thus meeting the safety distance requirements. Moreover, the length of the lead-out pin is significantly reduced compared to the traditional pin connection to the solder joint, thereby saving costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0015] Figure 1 A schematic diagram of the front of the metal shielding cover and high-temperature isolation membrane; Figure 2 This is a schematic diagram of the overall frontal sectional view; Figure 3 This is a three-dimensional schematic diagram of the magnetic core.

[0016] Illustration: 1. Base; 2. Metal shielding cover; 3. High-temperature isolation membrane; 4. First terminal; 5. Adjustment frame; 6. Second terminal; 7. Protrusion; 8. Magnetic core. Detailed Implementation

[0017] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] This utility model embodiment provides a transformer with improved safety distance and magnetic shielding structure. Please refer to [link / reference]. Figures 1-3 The transformer body includes a base 1 mounted on the transformer body. The base 1 is divided into upper and lower parts. A high-temperature isolation membrane 3 is fixed between the upper and lower parts of the base 1. A metal shield 2 is fixed on the top of the base 1. A magnetic core 8 is provided inside the metal shield 2. The bottom of the magnetic core 8 is fixedly connected to the base 1. Multiple first terminals 4 are electrically connected to the bottom of the base 1.

[0021] like Figure 1 and Figure 2 As shown, the base 1 is designed as a two-part structure, which provides a spatial basis for setting other components in the middle, making it easier to achieve a specific functional layout.

[0022] The high-temperature isolation membrane 3 is mainly used to isolate the upper and lower parts of the base 1, preventing high temperature from being conducted between the upper and lower parts. Different parts of the base 1 may generate different temperatures. The high-temperature isolation membrane 3 can effectively prevent heat transfer, avoid damage to other components due to excessive temperature, improve the stability and reliability of the entire device, and extend its service life. At the same time, it also helps to maintain the relative stability of the internal temperature of the device, ensuring that components such as the magnetic core 8 work in a suitable temperature environment and improving their performance. Moreover, by using the sleeve-type high-temperature isolation membrane 3, the magnetic core fixing tape and magnetic core back adhesive can be removed in terms of process. Structurally, the safety distance between the primary and secondary sides is better increased to meet safety requirements.

[0023] The metal shield 2 can shield the internal magnetic core 8. When a high-frequency pulse current generated by the first terminal 4 or the second terminal 6 is passed through the primary coil, the current will generate a magnetic field with the same high frequency change inside the magnetic core 8. The magnetic core 8 tightly confines most of the magnetic field inside itself, forming a closed loop, ensuring that the magnetic field can efficiently pass through the secondary coil. The changing magnetic field passing through the secondary coil will induce an electromotive force (voltage) at both ends of the secondary coil, which will then be output again by the first terminal 4 or the second terminal 6. Although the magnetic core 8 tightly confines most of the magnetic field inside itself, there will be a small amount of magnetic field leakage. By using the metal shield 2, external electromagnetic interference can be prevented from affecting the magnetic core 8, and the leakage of the magnetic field generated by the magnetic core 8 can be reduced. This effectively improves the anti-interference capability of the device, ensures that the magnetic core 8 works in a stable electromagnetic environment, and guarantees the stability and accuracy of its performance. For applications with high electromagnetic environment requirements, such as precision electronic equipment and communication equipment, this shielding effect is particularly important. It can avoid data errors and signal distortion caused by electromagnetic interference, improve the overall performance and reliability of the equipment, and reduce the manual process of wrapping the outer copper foil. It also provides more effective shielding for EMI performance, meeting customer requirements. The adjustment of the two processes greatly reduces the loss of manual labor time, increases the production speed of workers, speeds up the production progress, and greatly improves the overall production efficiency.

[0024] The product is currently protected by a sleeve and adhesive backing for the magnetic core 8, which poses significant challenges to manufacturing processes and production efficiency. A new manufacturing process using a high-temperature insulating film 3 eliminates the need for the magnetic core fixing tape and adhesive backing for the magnetic core 8. Furthermore, a metal shield 2 is directly added to the outer shielding structure, providing better EMI control. This process also reduces manual labor time, improves production efficiency, and offers more effective EMI management.

[0025] The magnetic core 8 is the core component of the entire device to realize magnetic related functions. For example, in equipment such as transformers and inductors, the magnetic core 8 is used to concentrate and guide the magnetic field to realize functions such as electrical energy conversion and transmission.

[0026] The first terminal 4 is the interface for electrical connection between the device and the external circuit. Through these first terminals 4, the device can be connected to the circuit to realize functions such as input of electrical energy, output of electrical energy or transmission of signals.

[0027] Specific operating process: During operation, the external circuit establishes an electrical connection with the device through multiple first terminals 4 at the bottom of the base 1, providing power or transmitting signals. After receiving power, the magnetic core 8 begins to operate according to its own characteristics (such as voltage transformation in a transformer, storage and release of magnetic energy in an inductor). The metal shield 2 surrounds the magnetic core 8, effectively shielding it from external electromagnetic interference and preventing the magnetic field generated by the magnetic core 8 from leaking outward, ensuring that the magnetic core 8 operates in a stable electromagnetic environment. The high-temperature isolation film 3 between the upper and lower parts of the base 1 serves to isolate the temperature, preventing the upper and lower parts from affecting each other due to temperature differences and maintaining the relative stability of the internal temperature of the device. Through the coordinated work of these components, the entire device achieves improved safety distances and magnetic shielding, ensuring stable and reliable operation under various working conditions.

[0028] Please continue reading. Figure 1 and Figure 2 The diameter of the magnetic core 8 is smaller than the diameter of the base 1. The bottom of the metal shield 2 is an open structure, and the metal shield 2 is fitted over the outside of the magnetic core 8.

[0029] like Figure 1 and Figure 2 As shown, the structural adaptation and installation design allows the magnetic core 8 to be placed smoothly in the space provided by the base 1, which provides convenient conditions for the fixed connection between the magnetic core 8 and the base 1. The base 1 can provide a stable support platform for the magnetic core 8, ensuring that the magnetic core 8 will not be displaced due to external forces or its own vibration during operation, thus ensuring the stability of the entire device structure.

[0030] The metal shield 2 has an open structure and is fitted over the magnetic core 8. Its main purpose is to utilize the shielding properties of metal materials to reduce the leakage of the magnetic field generated by the magnetic core 8, and to prevent external magnetic fields from interfering with the magnetic core 8. The open structure design facilitates the installation and disassembly of the metal shield 2 to a certain extent, and can also reduce the use of materials and lower costs while ensuring the shielding effect. The bottom opening structure allows the bottom of the magnetic core 8 to be easily fixedly connected to the base 1, and also facilitates the electrical connection of the first terminal 4 at the bottom of the base 1 with other circuits. This design does not affect the overall electrical connection and signal transmission of the device due to the presence of the metal shield 2, and ensures the normal operation of the device.

[0031] Please see Figure 2 An adjustment frame 5 is fitted on the outside of the base 1. The distance between the adjustment frame 5 and the base 1 is set. Multiple second terminals 6 are fixed on the outside of the adjustment frame 5 near the bottom. A protrusion 7 is formed on the inner wall of the adjustment frame 5 with its center protruding out. One side of the protrusion 7 is in contact with the base 1.

[0032] like Figure 2 and Figure 3 As shown, the second terminal 6 provides an additional electrical connection point for the entire device. In electronic circuits, different components and modules need to be electrically connected through wires to achieve signal transmission or power supply. The setting of the second terminal 6 allows the adjustment box 5 to be easily connected to other external circuits or devices, expanding the number of electrical interfaces and connection flexibility of the device.

[0033] The protrusion 7 fits into the base 1 and can play a positioning and guiding role when the position of the adjustment frame 5 is adjusted relative to the base 1. It can ensure that the adjustment frame 5 moves smoothly along the predetermined direction, avoid deviation or shaking during the adjustment process, ensure the accuracy and stability of the adjustment, and enable the adjustment frame 5 to connect with the base 1 to ensure the normal operation of the second terminal 6.

[0034] The damping component generates a certain resistance when the adjustment frame 5 moves up and down, so that the operator needs to apply a certain force to move the adjustment frame 5 when adjusting its position. This resistance can prevent the adjustment frame 5 from moving on its own when subjected to slight external force or vibration, thus ensuring the stability of the adjusted position.

[0035] Rubber has good elasticity and damping properties. When it is used as a damping component at the connection between the protrusion 7 and the adjusting frame 5, it can generate corresponding resistance and achieve the ideal adjustment damping effect. This damping characteristic can be adjusted according to actual needs to meet the adjustment requirements of different devices.

[0036] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A transformer with improved safety distance and magnetic shielding structure, characterized in that, include: The transformer body and the base (1) on the transformer body are configured as upper and lower parts. A high temperature isolation membrane (3) is fixed between the upper and lower parts of the base (1). A metal shield (2) is fixed on the top of the base (1). A magnetic core (8) is provided inside the metal shield (2). The bottom of the magnetic core (8) is fixedly connected to the base (1). A plurality of first terminals (4) are electrically connected to the bottom of the base (1).

2. The transformer with improved safety distance and magnetic shielding structure according to claim 1, characterized in that, The diameter of the magnetic core (8) is smaller than the diameter of the base (1).

3. The transformer with improved safety distance and magnetic shielding structure according to claim 1, characterized in that, The bottom of the metal shield (2) is an open structure, and the metal shield (2) is fitted over the outside of the magnetic core (8).

4. A transformer with improved safety distance and magnetic shielding structure according to claim 1, characterized in that, An adjustment frame (5) is fitted around the base (1), and the distance between the adjustment frame (5) and the base (1) is set.

5. A transformer with improved safety distance and magnetic shielding structure according to claim 4, characterized in that, Multiple second terminals (6) are fixed to the outside of the adjustment frame (5) near the bottom.

6. A transformer with improved safety distance and magnetic shielding structure according to claim 4, characterized in that, The inner wall of the adjustment frame (5) protrudes from its center to form a protrusion (7), and one side of the protrusion (7) is in contact with the base (1).

7. A transformer with improved safety distance and magnetic shielding structure according to claim 6, characterized in that, A damping element is provided between the protrusion (7) and the base (1).

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