CN106208999B

CN106208999B - Network filtering mould group and its manufacturing method

Info

Publication number: CN106208999B
Application number: CN201510210060.0A
Authority: CN
Inventors: 徐勇春
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Priority date: 2015-04-29
Filing date: 2015-04-29
Publication date: 2018-12-11
Anticipated expiration: 2035-04-29
Also published as: CN106208999A

Abstract

A kind of network filtering mould group, it is equipped with several signal transmission passages, there is common mode choke interconnected and auto-transformer on each signal transmission passage, and do not have isolating transformer on each signal transmission passage, wherein the common mode choke includes first annular magnetic core and two enameled wires being wound on first annular magnetic core, and the auto-transformer includes the second toroidal core and two enameled wires being wound on first annular magnetic core.The manufacturing cost of inventive network filter module is low, and lightning protection grade is high.The manufacturing method of network filtering mould group discloses together.

Description

Network filtering mould group and its manufacturing method

[technical field]

The present invention about in a kind of network filtering mould group and its manufacturing method more particularly to network filtering mould group have magnetic The setting of core element.

[background technique]

Socket and plug cooperates each other for RJ45 network connector and RJ45 connector, and RJ45 connector is connect with cable, by It is commonly located at outside building in cable, the phenomenon that cable that occurs now and then is struck by lightning, to there is big surging (surge) to pass through from cable RJ45 connector is crossed to be passed to RJ45 network connector, at this moment in tradition RJ45 network connector isolating transformer centre cap Due to being connected with resistance and capacity cell, high surging may be damaged resistance and capacity cell and can not connect to ground, and this When high surging can be coupled to the secondary of isolating transformer from the primary of isolating transformer, and secondary is and the mother that is equipped with chip What plate (motherboard) was electrically connected, big surging can burn out chip and cause loss serious.

The network filtering mould group for being currently used for RJ45 network connector please refers to Fig. 4 and Fig. 5 comprising it is interconnected every From transformer (isolation transformer) and common mode choke (common mode choke), isolating transformer T tool There are mutually electrically isolated primary coil T1 and secondary wire T2, forms isolating transformer T and need four four strands twisted together Line W is wound repeatedly around annular core C1, and two in four twisted wire W need to be only wound on common mode choke M.Four twisted wire W enclose Coiling and lineation process around annular core C1 is various, and working hour is longer.

[summary of the invention]

The technical problems to be solved by the present invention are: the network filtering mould group and its system that provide a kind of structure and be simple to manufacture Make method.

To provide a kind of simple network filtering mould group of structure, the present invention adopts the following technical scheme: a kind of network filtering Mould group is equipped with several signal transmission passages, has common mode choke interconnected and self coupling on each signal transmission passage Transformer, and do not have isolating transformer on each signal transmission passage, wherein the common mode choke includes first annular magnetic Core and two enameled wires being wound on first annular magnetic core, the auto-transformer include the second toroidal core and winding In two enameled wires on first annular magnetic core.

To provide a kind of network filtering mould group being simple to manufacture, the present invention adopts the following technical scheme: a kind of network filtering The manufacturing method of mould group comprising following steps:

(1) first annular magnetic core, the second toroidal core and two enameled wires are provided, first annular magnetic core has first Ring body and the first through hole being set among the first ring body, the second toroidal core have the second ring body and are set in the second ring body Between the second through-hole；

(2) two enameled wires are mutually twisted into one twisted pair, which has the first end and the second end, It draws the first end and passes repeatedly through first through hole around the circumferentially wound several circles of the first ring body, the second end, which is scattered, to be formed common mode and grip Two connection the end of a thread of stream circle；

(3) two the end of a thread for drawing the first end pass repeatedly through circumferentially wound several circles of second through-hole around the second ring body, will Eventually off second ring body of two the end of a thread of first end is simultaneously twisted the centre cap for being formed together auto-transformer.

Compared with the existing technology, present invention omits the isolating transformer in traditional network filter module, annular is replaced with The auto-transformer of coiling setting, since auto-transformer only needs two enameled wire winding toroidal cores, compared to tradition isolation Transformer lineation and winding process reduce very much, save artificial and working hour, improve production efficiency, and due to only needing two Root enameled wire can lay out the combination of auto-transformer and common mode choke, and the usage amount of enameled wire halves, and reduce element Cost.In addition, since network filtering mould group eliminates isolating transformer, when cable is struck by lightning by outside, avoid every Secondary coil is couple by high surging from the primary coil of transformer, so as to cause the risk that chip is burnt out, improves lightning protection etc. Grade.Certainly, due to the auto-transformer and common mode inhibition device using toroidal core winding structure, bar shaped magnetic core energy shape is compared At closed magnetic loop, so that inductance is higher, preferably to eliminate network noise.

[Detailed description of the invention]

Fig. 1 is the circuit diagram for meeting inventive network filter module.

Fig. 2 is the circuit diagram in one channel of the group of network filtering mould shown in Fig. 1.

Fig. 3 is the network filtering mould group of 2 circuit of application drawing.

Fig. 4 is the circuit diagram in one channel of prior art network filter module.

Fig. 5 is the network filtering mould group that the prior art utilizes Fig. 4 circuit.

[primary clustering symbol description]

Cable side	101	Chip side	102
				Signal transmission passage	11	Common mode choke	12
First annular magnetic core	121	First through hole	1210
				First ring body	1211	Enameled wire	122
The end of a thread	1221	Centre cap	1222
				Auto-transformer	13	Second toroidal core	131
Second through-hole	1310	Second ring body	1311
				Ground terminal	15

The present invention that the following detailed description will be further explained with reference to the above drawings.

[specific embodiment]

As shown in Figure 1, to meet a kind of circuit diagram of network filtering mould group of the invention.Network filtering mould group is equipped with several Signal transmission passage 11 has common mode choke 12 interconnected and auto-transformer 13 on each signal transmission passage 11, And do not have isolating transformer on each signal transmission passage.Auto-transformer 13 is leaned on close to cable side 101, common mode choke 12 Nearly chip side 102.Alternatively, it is also possible to by auto-transformer 13 and common mode choke 12 with respect to cable side 101 and chip side 102 Location swap.

It is illustrated in figure 2 a channel circuit of the group of network filtering mould shown in Fig. 1, Fig. 3 is to filter using the network in mono- channel Fig. 2 Wave mould group.The common mode choke 12 includes first annular magnetic core 121 and two paints being wound on first annular magnetic core 121 Envelope curve 122, the auto-transformer 13 include the second toroidal core 131 and be wound on the second toroidal core 131 two Enameled wire 122.Two enameled wires 122 on common mode choke 12 and two enameled wires 122 on auto-transformer 13 are respectively The different parts of two enameled wires 122.In addition, on two enameled wires 122 and auto-transformer 13 on common mode choke 12 Two enameled wires 122 or different enameled wires, then need in this way by two 122 Hes of enameled wire on common mode choke 12 Two enameled wires 122 on auto-transformer 13 are electrically connected, and can be directly connected to, can also be passed through by wicking Conductive path on circuit board is electrically connected.

The part that two enameled wires 122 are wound in first annular magnetic core 121 twists together, and is not wound in first annular The part of magnetic core 121 is scattered setting.The part that two enameled wires 122 are wound in the second toroidal core 131 twists together, and two Part of the enameled wire 122 between first annular magnetic core 121 and the second toroidal core 131 is scattered setting.Common mode choke 12 On two free the end of a thread 1221 be electrically connected to chip side 102, the centre cap 1222 of auto-transformer 13 directly electrically connects It is connected to ground terminal 15, non-resistance, capacitor or other lightning protection components, not only subtract in this way between centre cap 1222 and ground terminal 15 Element cost is lacked, moreover it is possible to which the high surging (surge) that will directly be struck by lightning directly is connected to ground, is broken through habitual thinking and is creatively mentioned High lightning protection grade.The setting as shown in figure 3, two free the end of a thread 1221 scatter, centre cap 1222 are two twisted opposite Rear line head.

A kind of manufacturing method of network filtering mould group comprising following steps:

(1) first annular magnetic core 121, the second toroidal core 131 and two enameled wires 122, first annular magnetic are provided The first through hole 1210 that core 121 has the first ring body 1211 and is set among the first ring body 1211, the second toroidal core 131 tool The second through-hole 1310 for having the second ring body 1311 and being set among the second ring body 1311；

(2) two enameled wires 122 are mutually twisted into one twisted pair, which has the first end and second end Head, the first end of traction pass repeatedly through first through hole around the circumferentially wound several circles of the first ring body, the second end are scattered to be formed altogether Two connection the end of a thread 1221 of mould choke coil；

(3) the first end is scattered to form two the end of a thread, and the two of the first end the end of a thread that scatter is each passed through the second through-hole With on the outside of the second ring body after be twisted into one twisted pair, then wound around the second ring body.

(4) two the end of a thread for drawing the first end pass repeatedly through circumferentially wound several circles of second through-hole around the second ring body, dissipate First end capitiform is opened into two dispersion the end of a thread, wherein a end of a thread is pierced by from the second through-hole, another the end of a thread is worn on the outside of the second ring body Out, eventually off second ring body of two the end of a thread of the first end and it is twisted the centre cap for being formed together auto-transformer 12 1222。

Network filtering mould group can be RJ45 network connector or network transformer (Lan transformer) mould group. Further include step 5) when network filtering mould group is RJ45 network connector: a circuit board for being equipped with several conductive sheets is provided, it will The end of a thread that scatters of the two of second end is respectively connected to a conductive sheet, and the two of the first end twisted the end of a thread are connected to same lead simultaneously Electric piece；Step 6): an insulating body is provided, circuit board is installed to insulating body；Step 7): providing a metal screen case, Metal screen case is coated to the outside to circuit board and insulating body.

The above is only part better embodiment of the invention, those of ordinary skill in the art are by reading explanation of the invention Book and to any equivalent variation that technical solution of the present invention is taken, all are covered by the claims of the invention.

Claims

1. a kind of network filtering mould group is equipped with several signal transmission passages, has on each signal transmission passage and be connected with each other Common mode choke and auto-transformer, and on each signal transmission passage do not have isolating transformer, it is characterised in that: it is described Common mode choke includes first annular magnetic core and two enameled wires being wound on first annular magnetic core, the auto-transformer Including the second toroidal core and two enameled wires being wound on the second toroidal core, two on the common mode choke are painted Two enameled wires on envelope curve and auto-transformer are respectively the different parts of two enameled wires, and two enameled wires are wound in first The part that the part of toroidal core twists together, and is not wound in first annular magnetic core is scattered setting, two enameled wires windings It is twisted together in the part of the second toroidal core, two enameled wires are between first annular magnetic core and the second toroidal core It scatters setting part.

2. a kind of manufacturing method of network filtering mould group comprising following steps:

(1) first annular magnetic core, the second toroidal core and two enameled wires are provided, first annular magnetic core has the first ring body And it is set to the first through hole among the first ring body, the second toroidal core has the second ring body and is set among the second ring body Second through-hole；

(2) two enameled wires are mutually twisted into one twisted pair, which has the first end and the second end, traction the One end passes repeatedly through first through hole around the circumferentially wound several circles of the first ring body, scatters the second end to form common mode choke Two connection the end of a thread；

(3) the first end is scattered to form two the end of a thread, and the two of the first end the end of a thread that scatter is each passed through the second through-hole and It is twisted into one twisted pair after on the outside of two ring bodies, then is wound around the second ring body；

(4) two the end of a thread for drawing the first end pass repeatedly through circumferentially wound several circles of second through-hole around the second ring body, scatter the One end capitiform is at two dispersion the end of a thread, wherein a end of a thread is pierced by from the second through-hole, another the end of a thread is pierced by the outside of the second ring body, will Eventually off second ring body of two the end of a thread of first end is simultaneously twisted the centre cap for being formed together auto-transformer.

3. the manufacturing method of network filtering mould group as claimed in claim 2, it is characterised in that: further include step after step 4) 5): a circuit board for being equipped with several conductive sheets being provided, the two of the second end the end of a thread that scatter are respectively connected to a conductive sheet, by the The twisted the end of a thread of the two of one end is connected to same conductive sheet simultaneously.

4. the manufacturing method of network filtering mould group as claimed in claim 3, it is characterised in that: further include step after step 5) 6): an insulating body being provided, circuit board is installed to insulating body.

5. the manufacturing method of network filtering mould group as claimed in claim 4, it is characterised in that: further include step after step 6) 7): a metal screen case being provided, metal screen case is coated to the outside to circuit board and insulating body.