Improved network transformer

Abstract

The utility model discloses an improved structure of network transformer, including a shell, a coil group and a circuit board of electromagnetic interference suppression and surge absorption. Wherein the shell is the rectangular cubic structure body with a containing space and an opening in the inside, and multiple metal pin terminals are respectively arranged in the two sides of the shell interior with the way of embedding emission, and multiple first connecting parts are formed on the edge of the opening, and multiple second connecting parts are formed on the outside of the shell, the coil group is arranged in the containing space and is electrically connected to part of the multiple first connecting parts respectively, the circuit board of electromagnetic interference suppression and surge absorption is respectively equipped with multiple third connecting parts on both sides, and the circuit board of electromagnetic interference suppression and surge absorption is closed and arranged in the opening, and the multiple third connecting parts are electrically connected to part of the multiple first connecting parts respectively, so as to improve the convenience and stability of assembly.

Description

Technical Field

[0001] This utility model belongs to the technical field of network equipment, and in particular refers to an improved structure of a network transformer that utilizes a housing and multiple metal pin terminals to be integrally molded and injected, and forms a housing space for placing a coil assembly within the housing, and uses a circuit board to form a closed design at the opening of the housing space, so as to improve the convenience and stability of its assembly. Background Technology

[0002] Network transformers are commonly used in network switches, routers, network cards, hubs, etc. A network transformer is a type of transformer whose structure is similar to that of a common-mode inductor. The casing is made of industrial-grade plastic material, and the operating temperature can reach -40℃ to 85℃. When connected to an RJ45 connector through the PHY (port physical layer), a network transformer can be used to enhance the transmission signal, provide lightning protection, waveform repair, suppress electromagnetic interference, impedance matching, and isolate different voltage levels between different network devices.

[0003] Traditional network transformers typically include a housing and a coil assembly. The housing contains a housing body and multiple pins connected to the housing body. The housing body has an internal space for accommodating and installing the coil assembly. In the past, the leads of the coil assembly were wound around the multiple pins. However, because manual winding was required, the production efficiency was low and there was a relatively large error. Therefore, it was necessary to improve the process. Another type of network transformer uses a chipset and includes a metal casing and a circuit board for electromagnetic interference suppression and surge absorption. This circuit board contains a PHY chip, multiple capacitors, multiple resistors, and multiple surge suppression components. The metal casing encloses all these components, isolating the PHY chip from the outside and greatly enhancing its anti-interference capability. It also provides significant protection for the PHY chip (e.g., against lightning strikes). When connected to network ports with different voltage levels (e.g., some PHY chips are 2.5V, others are 3.3V), it will not affect the devices connected to it. Although this type of network transformer uses various electronic components, its stability is still somewhat inferior to that of traditional coil-type network transformers, thus requiring improvement.

[0004] In view of this, the inventor of this utility model has accumulated many years of experience in mechanical design and, after conceiving, proposed an improved network transformer structure that combines the characteristics of the two network transformers mentioned above. It includes a housing, a coil assembly, and a circuit board for electromagnetic interference suppression and surge absorption. It utilizes a housing and multiple metal pin terminals to be integrally molded and injection molded, and forms an accommodating space for placing a coil assembly within the housing. A circuit board is placed at the opening of the accommodating space to form a closed design, thereby greatly improving its assembly convenience and stability, and providing better performance. Utility Model Content

[0005] One objective of this invention is to provide an improved structure for a network transformer, comprising a housing, a coil assembly, and a circuit board for electromagnetic interference suppression and surge absorption. The housing has an internal rectangular cubic structure with an accommodating space and an opening. Multiple metal pin terminals are spaced apart on both sides of the housing interior using an embedded / ejected method. Multiple first connection portions are formed at the edge of the opening, and multiple second connection portions are formed on the exterior of the housing. The coil assembly is disposed within the accommodating space and electrically connected to portions of the multiple first connection portions. The circuit board for electromagnetic interference suppression and surge absorption has multiple third connection portions on both sides, and is closed at the opening. The multiple third connection portions are electrically connected to portions of the multiple first connection portions, thereby improving assembly convenience and stability.

[0006] To achieve the above objectives, this utility model provides an improved structure for a network transformer, comprising: a housing, including a rectangular cubic structure having an internal accommodating space, and an opening communicating with the accommodating space, wherein a plurality of metal pin terminals are respectively and spaced apart on both sides of the housing in an embedded and ejected manner, one end of the plurality of metal pin terminals being located at the edge of the opening to form a plurality of first connection portions, and the other end extending outward and spaced apart on both sides of the housing to form a plurality of second connection portions; a coil assembly having a plurality of electrically connected coils, and the coil assembly being disposed in the accommodating space and then electrically connected to a portion of the plurality of first connection portions; and an electromagnetic interference suppression and surge absorption circuit board having a plurality of third connection portions on both sides, and the electromagnetic interference suppression and surge absorption circuit board being closed at the opening, and the plurality of third connection portions being electrically connected to a portion of the plurality of first connection portions, for resisting electromagnetic interference and absorbing surges, etc.

[0007] In one embodiment, the present invention adopts a single-layer structure design, with the opening located on the bottom surface of the housing, and the plurality of metal pin terminals being the plurality of second connection portions also located on the bottom surface of the housing; furthermore, the electromagnetic interference suppression and surge absorption circuit board is provided with a plurality of resistors, a plurality of surge suppression elements, and at least one capacitor, which are electrically connected to the plurality of third connection portions respectively. It should be noted that, in this embodiment, the plurality of resistors are located on the same side, the plurality of surge suppression elements are located on the other side, and the capacitor is located in the center of the electromagnetic interference suppression and surge absorption circuit board and is respectively connected to the plurality of resistors and the plurality of surge suppression elements by a preset circuit; furthermore, the improved structure of the network transformer of the present invention further includes a signal pin located on the other side of the housing besides the plurality of metal pin terminals, and the signal pin is electrically connected to the electromagnetic interference suppression and surge absorption circuit board.

[0008] In another embodiment, the improved structure of the network transformer of this utility model adopts a double-layer structure design, thus further having a cover, and the opening is located on the top surface of the housing, the cover being used to close the opening; and, a stepped portion is provided around the housing corresponding to the opening, the size of the stepped portion being larger than the size of the cover, so that the cover, after closing the opening, forms an integral part with the housing; similar to the single-layer structure design, the electromagnetic interference suppression and surge absorption circuit board is provided with multiple resistors, multiple surge suppression elements and at least one capacitor, and is electrically connected to the multiple third connection portions respectively. The multiple resistors are located on the same side, the multiple surge suppression elements are located on the other side, and the capacitor is located in the center of the electromagnetic interference suppression and surge absorption circuit board and is respectively connected to the multiple resistors and the multiple surge suppression elements by a preset circuit. The improved structure of the network transformer further includes a signal pin located on the other side of the housing besides the multiple metal pin terminals, and the signal pin is electrically connected to the electromagnetic interference suppression and surge absorption circuit board. Attached Figure Description

[0009] Figure 1 This is an exploded perspective view of the first preferred embodiment of the present invention.

[0010] Figure 2 This is a cross-sectional view of the first preferred embodiment of the present invention after assembly.

[0011] Figure 3 This is a three-dimensional view of the assembled appearance of the first preferred embodiment of this utility model.

[0012] Figure 4 This is an exploded perspective view of the second preferred embodiment of the present invention.

[0013] Figure 5 This is a cross-sectional view of the second preferred embodiment of the present invention after assembly.

[0014] Figure 6 This is a three-dimensional view of the assembled appearance of the second preferred embodiment of the present invention.

[0015] Explanation of reference numerals in the attached drawings: 1-Improved structure of network transformer; 11-Shell; 111-Accommodation space; 112-Opening; 113-Metal pin terminal; 114-Stepped section; 1131-First connection part; 1132-Second connection part; 12-Coil group; 121-Coil; 13-Circuit board for electromagnetic interference suppression and surge absorption; 131-Third connection part; 132-Resistor; 133-Surge suppression element; 134-Capacitor; 14-Signal pin; 15-Cap. Detailed Implementation

[0016] To ensure a clear understanding of the contents of this utility model, please refer to the following description and accompanying drawings.

[0017] Please see Figures 1-3 The figures below show an exploded perspective view of the first preferred embodiment of the present invention, a cross-sectional view after assembly, and a perspective view of its external appearance. As shown in the following figures, the improved structure 1 of the network transformer of the present invention includes a housing 11, a coil group 12, and a circuit board 13 for electromagnetic interference suppression and surge absorption.

[0018] The housing 11 includes a rectangular cubic structure with an internal accommodating space 111 and an opening 112 communicating with the accommodating space 111. Multiple metal pin terminals 113 are respectively and spaced apart on both sides of the housing 11 by embedding and ejecting. One end of the multiple metal pin terminals 113 is located at the edge inside the opening 112 to form multiple first connecting portions 1131, and the other end extends outward and is spaced apart on both sides of the housing 11 to form multiple second connecting portions 1132.

[0019] The coil assembly 12 has a plurality of coils 121 that are electrically connected to each other, and the coil assembly 12 is disposed in the accommodating space 111 and then electrically connected to a portion of the plurality of first connection portions 1131.

[0020] The circuit board 13 for electromagnetic interference suppression and surge absorption has multiple third connection portions 131 on both sides, and the circuit board 13 for electromagnetic interference suppression and surge absorption is closed at the opening 112, and the multiple third connection portions 131 are electrically connected to a portion of the multiple first connection portions 1131, which are mainly used to resist electromagnetic interference and absorb surges.

[0021] As shown in the figures above, this is a single-layer structure design of the present invention. The opening 112 is located on the bottom surface of the housing 11, and the multiple second connection portions 1132 of the multiple metal pin terminals 113 are also located on the bottom surface of the housing 11. Furthermore, the electromagnetic interference suppression and surge absorption circuit board 13 is provided with multiple resistors 132, multiple surge suppression elements 133, and at least one capacitor 134, which are electrically connected to the multiple third connection portions 131. Moreover, the multiple resistors 132 are located on the same side, so as to... The plurality of surge suppression elements 133 are located on the other side, and the capacitor 134 is located in the center of the electromagnetic interference suppression and surge absorption circuit board 13 and is respectively connected to the plurality of resistors 132 and the plurality of surge suppression elements 133 by a preset circuit. In addition, the improved structure 1 of the network transformer of this utility model has a signal pin 14, which is located on the other side of the housing 11 except for the plurality of metal pin terminals 113, and the signal pin 14 is electrically connected to the electromagnetic interference suppression and surge absorption circuit board 13.

[0022] Additionally, please see Figures 4-6 The figures below show an exploded perspective view of the second preferred embodiment of the present invention, a cross-sectional view after assembly, and a perspective view of the exterior. As shown in the following figures, the improved structure 1 of the network transformer of the present invention features a double-layer structure design, further comprising a cover 15 and an opening 112 located on the top surface of the outer casing 11. The cover 15 is used to close the opening 112, and a stepped portion 114 is provided around the outer casing 11 corresponding to the opening 112, such that the size of the stepped portion 114 is larger than the size of the cover 15, so that the cover 15, after closing the opening 112, forms an integral part with the outer casing 11. As described in the previous embodiment, the electromagnetic interference suppression and surge absorption circuit board 13 is provided with a plurality of resistors 132, a plurality of surge suppression elements 133 and at least one capacitor 134, and is electrically connected to the plurality of third connection portions 131 respectively. The plurality of resistors 132 are located on the same side and the plurality of surge suppression elements 133 are located on the other side. The capacitor 134 is located in the center of the electromagnetic interference suppression and surge absorption circuit board 13 and is connected to the plurality of resistors 132 and the plurality of surge suppression elements 133 respectively by a preset circuit 135. Furthermore, the improved structure 1 of the network transformer also has a signal pin 14, which is located on the other side of the housing 11 except for the plurality of metal pin terminals 113, and the signal pin 14 is electrically connected to the electromagnetic interference suppression and surge absorption circuit board 13.

[0023] Accordingly, the improved structure 1 of the network transformer of this utility model utilizes the housing 11 and the plurality of metal pin terminals 113 to form a plurality of first connection portions 1131 respectively disposed on both sides of the housing 11, for electrical connection with the coil group 12 housed inside the housing 11 and the circuit board for electromagnetic interference suppression and surge absorption that closes the opening 112. The plurality of second connection portions 1132 located outside the housing 11 are used for electrical connection with network communication equipment. Its assembly is quite The improved structure 1 of the single-layer structure of the network transformer is convenient because the circuit board 13 for electromagnetic interference suppression and surge absorption is enclosed on the bottom surface of the housing 11, and there is no problem of exposure after soldering, thus providing a certain degree of protection. On the other hand, the double-layer structure design, by using the cover to enclose the aforementioned circuit board 13 for electromagnetic interference suppression and surge absorption and the coil assembly 12 inside the housing 11, not only increases its assembly convenience, but also further increases its stability by providing dustproof, waterproof and impact-proof protection.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Therefore, any equivalent or easy changes made by those skilled in the art without departing from the spirit and scope of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. An improved structure for a network transformer, characterized in that, include: A housing includes a rectangular cubic structure having an internal accommodating space and an opening communicating with the accommodating space. Multiple metal pin terminals are respectively and spaced apart on both sides of the housing interior by embedding and ejection. One end of the multiple metal pin terminals is located at the edge inside the opening to form multiple first connection portions, and the other end extends outward and is spaced apart on both sides of the housing to form multiple second connection portions. A coil assembly having multiple electrically connected coils, the coil assembly being disposed in the accommodating space and then electrically connected to portions of the multiple first connecting portions; and An electromagnetic interference suppression and surge absorption circuit board has multiple third connection portions on both sides, and the circuit board is closed at the opening. The multiple third connection portions are electrically connected to a portion of the multiple first connection portions to resist electromagnetic interference and absorb surges.

2. The improved structure of the network transformer as described in claim 1, characterized in that, The opening is located on the bottom surface of the housing, and the multiple second connections of the multiple metal pin terminals are also located on the bottom surface of the housing.

3. The improved structure of the network transformer as described in claim 2, characterized in that, The circuit board for electromagnetic interference suppression and surge absorption is provided with multiple resistors, multiple surge suppression elements and at least one capacitor, and is electrically connected to the multiple third connection parts respectively.

4. The improved structure of the network transformer as described in claim 3, characterized in that, The multiple resistors are located on the same side, the multiple surge suppression elements are located on the other side, and the capacitor is located in the center of the electromagnetic interference suppression and surge absorption circuit board and is respectively connected to the multiple resistors and the multiple surge suppression elements by a preset circuit.

5. The improved structure of the network transformer as described in claim 4, characterized in that, It also has a signal pin located on the other side of the housing, in addition to the plurality of metal pin terminals, and the signal pin is electrically connected to the circuit board for electromagnetic interference suppression and surge absorption.

6. The improved structure of the network transformer as described in claim 1, characterized in that, It also has a cap, and the opening is located on the top surface of the housing, the cap being used to close the opening.

7. The improved structure of the network transformer as described in claim 6, characterized in that, The outer casing has a stepped portion surrounding the opening, with the size of the stepped portion being larger than the size of the cover, so that the cover, after closing the opening, forms an integral part with the outer casing.

8. The improved structure of the network transformer as described in claim 7, characterized in that, The circuit board for electromagnetic interference suppression and surge absorption is provided with multiple resistors, multiple surge suppression elements and at least one capacitor, and is electrically connected to the multiple third connection parts respectively.

9. The improved structure of the network transformer as described in claim 8, characterized in that, The multiple resistors are located on the same side, the multiple surge suppression elements are located on the other side, and the capacitor is located in the center of the electromagnetic interference suppression and surge absorption circuit board and is respectively connected to the multiple resistors and the multiple surge suppression elements by a preset circuit.

10. The improved structure of the network transformer as described in claim 9, characterized in that, It also has a signal pin located on the other side of the housing, in addition to the plurality of metal pin terminals, and the signal pin is electrically connected to the circuit board for electromagnetic interference suppression and surge absorption.

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