TWM654001U - PIN-free network transformer - Google Patents

Abstract

The invention discloses a PIN-free network transformer, comprising: an outer shell, provided with a receiving groove, a plurality of support platforms are provided at the open end of the outer shell, a lead groove is provided on the inner side wall of the receiving groove, the lead groove and the support platforms are arranged one by one, and a avoidance opening is provided on the outer side wall of the outer shell, the avoidance opening and the support platforms are arranged one by one; a coil assembly, comprising a transformer coil and a common-mode choke coil, the transformer coil and the common-mode choke coil are both arranged in the receiving groove, the leads of the transformer coil and the common-mode choke coil can extend through the lead groove and be placed on the corresponding support platforms, the leads are bonded to the support platforms, the part of the leads located on the support platforms protrudes from the support platforms, and the part of the leads exceeding the support platforms is bent and inserted into the corresponding avoidance openings.

Description

PIN-free network transformer

The invention relates to the technical field of network transformers, and in particular to a network transformer without PIN pins.

Network transformers are common electronic components, mainly used in network transmission circuits. Network transformers have coil components inside, and the coil components are generally fixed in an outer casing.

In the past, network transformers had PIN pins on their housings. The PIN pins were metal terminals embedded in the housings. In the past, the leads of the coil assembly were led out and then wound or welded on the PIN pins. Because the PIN pins needed to be embedded in the housing, it was more troublesome to produce the housing by injection molding, resulting in high processing costs. In addition, the use of metal for the PIN pins increased the cost of the network transformer.

The invention aims to solve at least one of the technical problems existing in the prior art. To this end, the invention proposes a network transformer without PIN pins, which eliminates the need for PIN pins, reduces costs, facilitates production and manufacturing, and is more convenient to install.

According to the first aspect of the present invention, a PIN-free network transformer is implemented, comprising: an outer shell, provided with a receiving groove, and a plurality of brackets are provided at the open end of the outer shell; a coil assembly, comprising a transformer coil and a common-mode choke coil, the transformer coil and the common-mode choke coil are both arranged in the receiving groove, the leads of the transformer coil and the common-mode choke coil are led out and placed on the corresponding brackets, the leads are bonded to the brackets, and the parts of the leads located on the brackets protrude from the brackets.

The PIN-free network transformer according to the embodiment of the present invention has at least the following beneficial effects: the housing is no longer embedded with PIN pins, but the copper lead wires on the coil assembly are directly used to fix the bracket on the housing and then connected to the circuit board, thereby directly eliminating the metal material for setting PIN pins on the housing, achieving the effect of saving costs, reducing the difficulty of forming the housing and reducing processing costs. The PIN-free network transformer directly uses the lead wires on the coil assembly as the contact part by changing the structure of the housing, eliminating the trouble of using PIN pins, retaining the function of connecting the network transformer to the circuit board, saving costs, reducing the difficulty of forming the housing and reducing processing costs, and is very convenient.

According to some embodiments of the present invention, the outer shell is arranged in a cubic shape, and supporting parts are arranged on both left and right sides of the outer shell, the supporting parts protrude outward, and the support platform is arranged on the supporting parts.

According to some embodiments of the present invention, a lead wire groove is provided on the inner side wall of the accommodating groove, and the lead wire groove is used to lead out the lead wire.

According to some embodiments of the present invention, a lead slope is provided in the lead groove.

Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be understood through practice of the present invention.

The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

In the description of the present invention, the meaning of "several" is one or more, the meaning of "many" is two or more, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of the first or the second, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and a person skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

Referring to FIGS. 1 to 3, a PIN-free network transformer includes: a housing 100, provided with a receiving groove 110, a plurality of brackets 120 are provided at the open end of the housing 100, a lead groove 111 is provided on the inner side wall of the receiving groove 110, the lead groove 111 and the brackets 120 are provided one-to-one, and an avoidance opening 130 is provided on the outer side wall of the housing 100, and the avoidance opening 130 and the brackets 120 are provided one-to-one; a coil assembly 200, including a transformer coil 210 and The common mode choke coil 220, the transformer coil 210 and the common mode choke coil 220 are all arranged in the accommodating groove 110, and the leads 230 of the transformer coil 210 and the common mode choke coil 220 can extend through the lead groove 111 and be placed on the corresponding support 120, the leads 230 are bonded to the support 120, the part of the leads 230 located on the support 120 protrudes from the support 120, and the part of the leads 230 exceeding the support 120 is bent and inserted into the corresponding avoidance opening 130. The housing 100 is no longer embedded with PIN pins, but the copper lead 230 on the coil assembly 200 is directly fixed to the support 120 on the housing 100 and then connected to the circuit board 300, thereby directly eliminating the metal material for setting PIN pins on the housing 100, achieving the effects of saving costs, reducing the difficulty of molding the housing 100 and reducing processing costs. The network transformer without PIN pins directly uses the lead 230 on the coil assembly 200 as the contact part by changing the structure of the housing 100, eliminating the trouble of using PIN pins, retaining the function of connecting the network transformer with the circuit board 300, saving costs, reducing the difficulty of molding the housing 100 and reducing processing costs, which is very convenient. It is understandable that the housing 100 is a plastic housing, and the housing 100 is injection molded. The coil assembly 200 may be a combination of various types, such as: one or more transformer coils 210; one or more common mode choke coils 220; one transformer coil 210 and one common mode choke coil 220; one transformer coil 210 and multiple common mode choke coils 220; multiple transformer coils 210 and one common mode choke coil 220, etc., according to actual needs.

In some embodiments, the outer shell 100 is set to be a cube, and the left and right sides of the outer shell 100 are both provided with supporting parts 140, the supporting parts 140 protrude outward, the support platform 120 is set on the supporting parts 140, and the avoidance opening 130 is set on the outer wall of the supporting parts 140.

In some embodiments, a lead inclined surface 111 a is disposed in the lead groove 111 .

A method for using a PIN-free network transformer is applied to the PIN-free network transformer and includes the following steps:

Preparation step: Take a circuit board 300, the circuit board 300 is provided with a contact plate 310, and the contact plate 310 is provided in a one-to-one correspondence with the support platform 120 of the housing 100;

Lead fixing step: Leads 230 of the transformer coil 210 and the common mode choke coil 220 are pulled out from the lead slot 111 so that the leads 230 are placed on the support 120, and the lead 230 portion that exceeds the support 120 is bent and inserted into the corresponding avoidance opening 130, and then the lead 230 is fixed on the support 120 by glue, and then the paint of the lead 230 placed on the support 120 is removed to form a contact portion that can conduct electricity;

Installation steps: apply a solder paste layer 311 on the contact pad 310, then initially place the pallet 120 toward the contact pad 310, and then heat the solder paste layer 311 to solidify the solder paste layer 311, so that the lead 230 placed on the pallet 120 is connected to the contact pad 310, so as to fix the housing 100 on the circuit board 300.

The housing 100 is no longer embedded with PIN pins. Instead, the copper lead wire 230 on the coil assembly 200 is directly fixed to the bracket 120 on the housing 100 and then connected to the circuit board 300. Thus, the housing 100 does not need metal materials for setting PIN pins, thus achieving the effect of saving costs, reducing the difficulty of forming the housing 100 and reducing the processing cost. When removing the paint, only the paint on the bracket 120 needs to be removed. , so as to avoid the lead 230 exposing the conductive part to the air, the solder paste layer 311 is used to fix the housing 100, and it can also play the role of conducting the coil assembly 200. The avoidance opening 130 is set to separate the supporting part 140, which makes the entire network transformer easier to operate during installation and fixation. It can be understood that the open end of the network transformer is the open end of the housing 100, that is, the open part at the upper end of the housing 100.

The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by a person skilled in the art without departing from the purpose of the present invention.

100: Housing 110: Receiving groove 111: Lead groove 111a: Lead slope 120: Support platform 130: Avoidance 140: Support part 200: Coil assembly 210: Transformer coil 220: Common mode choke coil 230: Lead 300: Circuit board 310: Contact plate 311: Solder paste layer

The above and/or additional aspects and advantages of the present invention will become apparent and easy to understand from the description of the embodiments in conjunction with the following figures, in which: FIG. 1 is a structural schematic diagram of a PIN-free network transformer of an embodiment of the present invention. FIG. 2 is a decomposed schematic diagram of the PIN-free network transformer shown in FIG. 1 . FIG. 3 is a structural schematic diagram of the PIN-free network transformer shown in FIG. 1 combined with a circuit board.

100: Shell

110: Storage tank

111: Lead duct

111a: Lead bevel

120: Support platform

130: Avoid the exit

140: Support part

200: Coil assembly

210: Transformer coil

220: Common mode choke coil

230: Lead wire

Claims (4)

A PIN-free network transformer, comprising: an outer shell, provided with a receiving groove, and a plurality of brackets are provided at the open end of the outer shell; a coil assembly, comprising a transformer coil and a common mode choke coil, the transformer coil and the common mode choke coil are both provided in the receiving groove, the leads of the transformer coil and the common mode choke coil are led out and placed on the corresponding brackets, the leads are bonded to the brackets, and the part of the leads located on the brackets protrudes from the brackets. As described in claim 1, the PIN-free network transformer, wherein the outer shell is arranged in a cubic shape, and support parts are arranged on both left and right sides of the outer shell, the support parts protrude outward, and the support platform is arranged on the support parts. A PIN-free network transformer as described in claim 2, wherein the inner side wall of the accommodating groove is provided with a lead groove, and the lead groove is used to lead out the lead. A PIN-free network transformer as described in claim 3, wherein a lead slope is provided in the lead groove.