WO2011147100A1 - Connection module - Google Patents

Connection module Download PDF

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Publication number
WO2011147100A1
WO2011147100A1 PCT/CN2010/073359 CN2010073359W WO2011147100A1 WO 2011147100 A1 WO2011147100 A1 WO 2011147100A1 CN 2010073359 W CN2010073359 W CN 2010073359W WO 2011147100 A1 WO2011147100 A1 WO 2011147100A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductive shield
conductive
terminal contacts
connection module
strip
Prior art date
Application number
PCT/CN2010/073359
Other languages
French (fr)
Inventor
Jiaqiang Wei
Original Assignee
Century Man Comm. Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Century Man Comm. Co., Ltd. filed Critical Century Man Comm. Co., Ltd.
Priority to PCT/CN2010/073359 priority Critical patent/WO2011147100A1/en
Publication of WO2011147100A1 publication Critical patent/WO2011147100A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot

Definitions

  • This invention relates to communication cabling, more specifically, to a connection module used for conductors.
  • connection module In communication cabling systems, a connection module is often adopted to form a node between a switch device and user equipments.
  • switch device include digital subscriber line access multiplexer (DSLAM), examples of user equipments can be personal computers, laptops.
  • DSLAM digital subscriber line access multiplexer
  • user equipments can be personal computers, laptops.
  • the distance between terminal contacts have to be elongated. This may limit the number of terminal contacts in a connection module with a given size, or need a larger connection module to receive a given number of terminal contacts.
  • connection module especially for high frequency signal transmission.
  • the present invention considers, at the same time, the possible crosstalk caused by untwisted conductor pairs and the number of terminal contacts in the module with a given size.
  • the solution provided by this invention has a good performance when used for high frequency signal transmission, but, this can not be understood as the invention should be limited to high frequency applications, because not only the frequency but also other characters of the signal and even the physical configuration of the cable can cause crosstalk.
  • a connection module comprising: a plurality of terminal contacts; a plurality of conductive shield plates, each of which being set between two adjacent terminal contacts; a trestle configured to receive the plurality of terminal contacts and conductive shield plates; at least one conductive shield strip arranged along at least one outer side of the terminal contacts, each of which conductively interconnecting at least a part of the plurality of conductive shield plates; at least one conductive ground contact for grounding said at least one conductive shield strip.
  • a device for preventing crosstalk on a connection module including a plurality of terminal contacts, comprising: a plurality of conductive shield plates; at least one conductive shield strip to be arranged along at least one outer side of the terminal contacts, each of which conductively interconnecting at least a part of said plurality of conductive shield plates; at least one conductive ground contact for grounding said at least one conductive shield strip.
  • a method for preventing crosstalk on a connection module including a plurality of terminal contacts comprising the steps of: a. providing a plurality of conductive shield plates, at least one conductive shield strip as well as at least one conductive ground contact; b. setting each of the plurality of conductive shield plates between two adjacent terminal contacts; c. arranging said at least one conductive shield strip along at least one outer side of the terminal contacts, each conductive shield strip then conductively interconnecting at least a part of the plurality of conductive shield plates, and grounding the at least one conductive shield strip with said at least one conductive ground contact.
  • the crosstalk between adjacent terminal contacts can be decreased and the requirements provided by Category 6 (250MHz) are well met in high frequency application.
  • Fig.l is a perspective view of a cable with a portion of the cover removed for the purpose of illustration;
  • Figs.2a-2b illustrate the appearance of a connection module according to one embodiment of the invention
  • Fig.3a is a perspective view of a connection module connected with a cable of Category 6;
  • Fig.3b is an enlarged view of the area A in Fig.3a;
  • Figs.4a-4c are exploded views of the connection module in Fig.3a;
  • Fig.5 is an enlarged view of two parts of a terminal contact in the connection module according to one embodiment of the invention.
  • Figs.6a-6b are enlarged views of a conductive shield plate in the connection module according to one embodiment of the invention.
  • Figs.7a-7b are enlarged views of a conductive shield strip in the connection module according to one embodiment of the invention.
  • Fig.8 is an enlarged view of a conductive ground contact in the connection module according to one embodiment of the invention.
  • Fig.9 is an enlarged view of a support part in the connection module according to one embodiment of the invention.
  • Fig.10 shows how a conductive ground contact in Fig.8 is supported by a support part in Fig.9;
  • Figs. l la-l lb illustrate perspective views of the connection module in Fig.3 a with the first portion of the housing removed;
  • Fig.12 is an enlarged view of the area B in Fig. 10a;
  • Fig.13 is an enlarged end view of the components for cross prevention according to one embodiment of the invention.
  • Fig.14a is a part of the side view of area B in Fig. 1 1a;
  • Fig.14b is an end view of area B in Fig.1 la;
  • Fig.15 is a rear view of a connection module according to one embodiment of the invention.
  • Fig.16 is a flowchart of the method for preventing crosstalk on a connection module including a plurality of terminal contacts according to one embodiment of the invention.
  • connection module 10 illustrates the appearance of a connection module 10 according to one embodiment of the invention.
  • the connection module may be provided with a housing 1 1 for damage or dust prevention.
  • the housing 1 1 is, without loss of generality, composed of a first portion 2 and a second portion 3 designed in pair for assembling.
  • the first portion 2 has several (e.g. 5) latching openings 21, while the second portion 3 has several (e.g. 5) latching lugs 31 having inclined planes in match with the latching openings 21.
  • the first and the second portions will be moved toward each other, and the latching lugs 31 work together with the latching openings 21 to fix the first portion 2 to the second portion 3 in at least direction Z, and vice versa.
  • the second portion 3 is provided with several (e.g. 4) projections 32, which exceed the bottom limb of the first portion 2 after assembling and therefore help to fix the portions to each other in direction X.
  • the aforesaid components for fixing are disposed on both sides of the housing 11.
  • the ways of fixing the portions of the housing 1 1 to each other is just exemplary, many existing ways of fixing different portions are also applicable.
  • the housing of a connection module does not have to be formed in a two-portion manner, it can be integrally formed or composed of more portions.
  • the housing 1 1 houses other components of the connection module well without affecting any basic function thereof.
  • the teeth-like chambers 22 cover the terminal contacts (not shown in Fig. 2a or 2b) and prevent them from dust and damage, while the spaces 23 allow the conductors to be inserted in so as to get their cover cut and form the electrical connection with the terminal contacts. This will be described in further detail below.
  • a housing is dispensable.
  • connection module connected with a UTP cable of Category 6 is illustrated. It should be understood that the connection module is surely not limited to be connected to UTP cable of Category 6, and in practice, there may be more cables being connected to the connection module.
  • connection module 10 is typically configured between a switch device and user equipments.
  • cable 1 is connected to the switch side and cable 1 ' is connected to the user side.
  • a signal from conductor 11 1 ' of untwisted conductor pair 11 ' will be conveyed by a terminal contact, specifically by its portion for signal transmission, to conductor 1 11 of untwisted conductor pair 1 1.
  • the signals carried by the same conductor pair will have the same, that's to say, the signal from conductor 1 1 1 ' to conductor 11 1 will be somewhat the same with the signal from conductor 112' to conductor 112. But, signals carried by different conductor pairs are usually different.
  • Figs.4a-4c are exploded views of the connection module 10 in Fig.3a.
  • the connection module 10 includes, beside the housing 1 1 , a plurality of (e.g. 50) terminal contacts 4, configured to establish connection with cables, e.g. cables 1 and 1 'shown in Figs.3a-3b. These terminal contacts 4 are typically provided in pairs, each pair is configured to be connected to two conductors of an individual untwisted conductor pair.
  • a plurality of (e.g. 50) terminal contacts 4 configured to establish connection with cables, e.g. cables 1 and 1 'shown in Figs.3a-3b.
  • These terminal contacts 4 are typically provided in pairs, each pair is configured to be connected to two conductors of an individual untwisted conductor pair.
  • every terminal contact has two individual pieces. Referring to Fig.5, which is an enlarged view of the two pieces of one terminal contact 4. Without loss of generality, the two pieces are symmetrical. Taking the piece on the left as instance, its upper portion 41 will be covered by a teeth-like chamber 22 on the first portion 2 of housing 1 1 , leaving the contact slot 41 1 appealed at least partially for the connection with a conductor.
  • the lower part 42 is configured to get in contact with the lower part of the other piece of the terminal contact 4 at contact point 421 (i.e. the piece on the right in Fig. 5), and also configured to ensure the stability of the terminal contact 4 when it is received by some other component of the connection module, e.g. a trestle which will be described shortly below.
  • terminal contacts 4 in the connection module can also be integrative, which may have almost the same structure as the one including two independent parts.
  • a conductor can be inserted into the space defined by two arms 412 and 413.
  • a terminal contact can be in a simple V-like or U-like shape, and a conductor can be wound surrounding one end of the terminal contact for connection.
  • connection module 10 shown in Fig. 4a also comprises a trestle 7, which is configured to receive the terminal contacts 4.
  • the trestle 7 includes a plurality of units 71 , each of which is configured to receive a pair of terminal contacts.
  • the inside structure of every unit 71 is in match with the lower parts of each piece of the terminal contacts, so as to ensure the stability of the received terminal contacts.
  • upper portions of the two terminal contacts will emerge from the top limb of the sub-unit, to make connection establishment possible.
  • the trestle 7 is mounted to the second portion 3 of housing 1 1.
  • the trestle 7 is further configured to be the base of the connection module.
  • the trestle 7 and the second portion 3 of housing 1 1 can be integrative and then the trestle 7 becomes a part of housing 1 1.
  • Electromagnetic shielding is the process of limiting the penetration of electromagnetic fields into a space, by blocking them with a barrier made of conductive material. Typically it is applied to enclosures, separating electrical devices from the outside, and to cables, separating wires from the environment the cable runs through. Electromagnetic shielding used to block radio frequency electromagnetic radiation is also known as RF shielding. The shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields, though not static or low-frequency magnetic fields. The amount of reduction depends upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic field, etc.
  • connection module 10 Components of the connection module 10 in close connection with the electromagnetic shielding will be described in detail below.
  • connection module 10 in Fig. 4a is provided with a plurality of (i.e. 24) conductive shield plates 5.
  • the crosstalk (if any) between adjacent terminal contacts connected to conductors carrying different signals should be taken into consideration.
  • the crosstalk between adjacent terminal contacts connected to conductors carrying different signals should be prevented with higher priority.
  • this should not, in any circumstance, be understood as that the invention should be limited to this example. It is also covered by the invention if some or all of the conductive shield plates 5 are set between terminal contacts connected to conductors carrying the same signal, e.g. signal having the same frequency.
  • terminal contacts 4 are sometimes artificially defined as a plurality of (e.g. twenty four) terminal contact pairs. Further, conductors of an untwisted conductor pair which are carrying the same signal are usually connected to terminal contacts belonging to the same terminal contact pair.
  • conductive shield plates 5 are set in such a manner that each of them is between two adjacent terminal contacts belonging to different terminal contact pairs, as shown in Fig. 4a.
  • each conductive shield plate 5 is received in the space 72 defined by and between two units 71 of the trestle 7.
  • a conductive shield plate 5 according to one embodiment of the invention is shown in Figs. 6a-6b. It is formed by an upper portion 51 and a lower part 52 which further comprises an elastic portion 521 at each outer side. The elastic portions 521 will emerge from the space 72 when the plate 5 has been received by the trestle 7. Other features, advantages and variations of the conductive shield plate 5 will be described in further detail below.
  • the conductive shield plates are made of conductive material. To be specific, they are made of metal. To be more specific, they are made of stainless steel.
  • At least one conductive shield strip arranged along at least one outer side of the terminal contacts, each of which is configured to conductively interconnect at least a part of the conductive shield plates.
  • there are two conductive shield strips namely the first conductive shield strip 61 and the second conductive shield strip 62.
  • the first conductive shield strip 61 conductively interconnects the twenty four conductive shield plates on one side, i.e. the front side in view of Fig. 4a
  • the second conductive shield strip 62 conductively interconnects the twenty four conductive shield plates on the other side, i.e. the back side in view of Fig. 4a.
  • a conductive shield strip according to the present invention e.g. conductive shield strip 61
  • conductive shield strip 61 is shown in Figs. 7a-7b.
  • it is provided with a turning at both ends, which will be helpful to establish connections with other components of the connection module 10, such as conductive ground contacts 81 and 82 which will be described below.
  • the conductive shield strips are made of metal. More specifically, they are made of copper, which is chosen considering the balance between the cost and conductivity.
  • the at least one conductive shield strip can be integrative which is like a ring surrounding the plates and terminal contacts.
  • the at least one conductive shield strip may be not as long as the ones shown in the figures, so that only some of the terminal contacts will be surrounded for crosstalk prevention.
  • the number of conductive shield strips maybe larger than two as shown in the figures.
  • each of the first and second conductive shield strips in Fig. 4a can be replaced by several shorter conductive shield strips formed end to end.
  • connection module 10 is further provided with two conductive ground contact for grounding the conductive shield strips 61 and 62, e.g. the first conductive ground contact 81 and the second conductive ground contact 82.
  • the first conductive ground contact 81 connects one end of the first conductive shield strips 61 to one end of the second conductive shield strip 62
  • the second conductive ground contact 82 connects the other end of the first conductive shield strip 61 to the other end of the second conductive shield strip 62.
  • Both of the conductive ground contacts will be further connected to a ground lead (not shown) for grounding.
  • Figs.9- 10 the conductive ground contacts 81 , 82 are respectively supported by support parts 91 and 92.
  • Fig.10 shows how a conductive ground contact in Fig.8 is supported by a support part in Fig.9, wherein a ground lead is also shown illustratively.
  • the support parts can be omitted.
  • Figs. l la-l lb show perspective views of the connection module in
  • Fig.2a with the first portion of housing removed, hence the covered components can be seen directly, wherein, the terminal contacts 4 and also conductive shield plates 5 have been received by the trestle 7.
  • the trestle 7 is mostly covered by the conductive shield strips 61 and 62, with only the top limbs of the units 71 emerge therefrom.
  • the conductive shield plates 5 are conductively interconnected by the conductive shield strips 61 and 62 respectively.
  • the conductive shield strips are then connected by the conductive ground contacts 81 and 82 at both ends and grounded.
  • the shield strips can get in touch with each other at both ends without the aid of the ground contacts, in which case the ground conducts are mainly used for grounding.
  • Fig.12 shows an enlarged view of area B indicated in Fig.1 1a, wherein the way in which the components contact each other become clearer.
  • a room 122 defined by the two conductive shield plates and shield strips 61 ,62, as well as a room 121 defined by the conductive shield plate on the left, shield strips 61 , 62 and the conductive ground contact 81.
  • ground contact 82 may help to define a room.
  • shield strips 61 ,62 contact with each other at their ends, ground contacts will need not to participate in the form the rooms. It should be already appreciated that other conductive shield plates will form more rooms with the shield strips 61 , 62.
  • room 121 contains the portions for signal transmission of terminal contacts 401 and 402. Taking terminal contact 401 as an example, the portion for signal transmission of a terminal contact will be clear by consider the path in which signal will go through the terminal contact 401.
  • the signal flows in at a point on slot 41 1 where the contactor gets in touch with the terminal contact 401 , the signal goes down to the lower part of one piece, and then conducted to another piece, goes up till it flows out at a point on slot 41 1 ' where another conductor connects to the terminal contact 401.
  • the width of the conductive shield strips shown in the drawings are just illustrative, it can extend, for example, in direction Z, preferably on the premise that the configuration of the conductor will not be influenced, for example, by leaving the conductor a slot or the like.
  • the conductive shield plates can prevent electromagnetic radiation in substantially direction Y and the reverse direction; the conductive shield strips can prevent electromagnetic radiation in substantially direction X and the reverse direction, so that the radiation can hardly bypassing a conductive shield plate on the edge sides.
  • the conductive shield strips alternatively together with the ground contacts, prevent electromagnetic radiation in substantially direction Y and the reverse direction at both ends of the connection module.
  • Fig.14a is a part of the side view of area B in Fig. 1 la. It is notable that, after assembling, conductive shield plate 501 is not lower than the two adjacent terminal contacts 402 and 403 between which the conductive shield plate 501 is set. More preferably, as illustrated in Fig.14a, conductive shield plate 501 is higher than the two adjacent terminals contacts 402,403. Therefore, it will be much harder for the radiation to bypass the plate 501 from its top side, so that the performance of crosstalk prevention is further improved. This is also applicable for other conductive shield plates on the connection module.
  • conductive shield plate 5 has a width no less than the two adjacent terminal contacts 402, 403 (blocked by the plate 501 in the figure) between which conductive shield plate 501 is set. More preferably, conductive shield plate 5 has a width larger than the two adjacent terminal contacts. Therefore, when the width of the conductive shield strips 61 ,62 are limited as shown in Fig.12, even if the radiation is capable to spread in direction X and the revert direction, it is still hard for it to by pass the conductive shield plate, so that the crosstalk can be prevented. This is also applicable for other conductive shield plates on the connection module.
  • the distance between two adjacent terminal contacts which will be connected to conductors carrying the same signal is shorter than one between two adjacent terminal contacts which will be connected to conductors carrying different signals.
  • the distance between terminal contacts 401 and 402 is shorter than the distance between terminal contacts 402 and 403. This makes it easier to place the conductive shield plate 501.
  • the longer distance between terminal contacts 402 and 403 is also helpful to decrease the possible crosstalk between the two terminal contacts, to which more attention should be paid according to Category Six.
  • the elastic portions 521 will at least partially emerge from the space defined by two units on the trestle 7. Since the two conductive shield strips 61 and 62 are set and limited to be surrounding the trestle 7, the elastic portions 521 of every conductive shield plate 5 will get in contact with the inside wall of the conductive shield strips, and hence the conductive shield plates are conductively interconnected.
  • the elastic portions 521 will possess elastic potential energy due to the pressure provided by the conductive shield strips.
  • connection module with two conductive shield strips, which may be easy in assembly process.
  • a single conductive shield strip could be bent so as to be surrounding the trestle 7 and to interconnect the conductive shield plates conductively.
  • more conductive shield strips can be grounded by properly designed ground slips.
  • connection module is adaptable to but not limited to high frequency signal transmission.
  • a device for preventing crosstalk on a connection module including a plurality of terminal contacts may be a subset of the aforementioned connection module, and can be produced or sale separately from the connection module.
  • the manufacture of connection modules can purchase this device and mount it onto a connection module for optimized the performance.
  • the device typically comprises the following components, see Fig. 13 : a plurality of conductive shield plates; at least one conductive shield strip; at least one conductive ground contact.
  • FIG.16 there is illustrated a flowchart of a method for preventing crosstalk on a connection module including a plurality of terminal contacts described in the context.
  • step S I 601 there is provided a plurality of conductive shield plates, at least one conductive shield strip as well as at least one conductive ground contact.
  • a plurality of conductive shield plates there are twenty four conductive shield plates, two conductive shield strips and two conductive ground contacts.
  • each of the plurality of conductive shield plates is set between two adjacent terminal contacts.
  • each of the twenty four conductive shield plates is set between two adjacent terminal contacts to be connected to conductors carrying different signals.
  • the total number of conductive shield plates may be a balance between the effects of restraining crosstalk and the cost.
  • step S I 603 the at least one conductive shield strip will be arranged along at least one outer side of the terminal contacts, each conductive shield strip then conductively interconnecting at least a part of the plurality of conductive shield plates. According to the embodiment shown in Fig. 1 1 a, all of the twenty four conductive shield plates are interconnected by the two conductive shield strips.
  • step S I 604 the at least one conductive shield strip will be grounded with the at least one conductive ground contact, therefore the conductive shield plates are grounded.
  • rooms each of which contains the portion for signal transmission of at least one of the terminal contacts are defined by using the conductive shield strip and the conductive shield plates.
  • the rooms are defined by using the at least one conductive shield strip, the conductive shield plates and the at least one conductive ground contact.
  • each conductive shield plate is not lower than two adjacent terminal contacts of the connection module between which said conductive shield plate is set, when said conductive shield plate has been received by the connection module.
  • each conductive shield plate is higher than two adjacent terminal contacts of the connection module between which said conductive shield plate is set, when said conductive shield plate has been received by the connection module.
  • each conductive shield plate has a width no less than the two adjacent terminal contacts between which said conductive shield plate is set.
  • each conductive shield plate has a width larger than the two adjacent terminal contacts between which said conductive shield plate is set.
  • the at least one conductive shield strip includes a first conductive shield strip and a second conductive shield strip
  • the first conductive shield strip conductively interconnecting the plurality of conductive shield plates on one side of the plurality of conductive shield plates
  • the second conductive shield strip conductively interconnecting the plurality of conductive shield plates one the other edge side of the plurality of conductive shield plates.
  • the at least one conductive ground contact includes a first conductive ground contact and a second conductive ground contact, the first conductive ground contact is configured to connect one end of the first conductive shield strip to one end of the second conductive shield strip and the second conductive ground contact configured to connect the other end of the first conductive shield strip to the other end of the second conductive ground contact.
  • each of the plurality of conductive shield plates is set between two adjacent terminal contacts to be connected to conductors carrying different signals.
  • connection module Since the context includes detailed description of the connection module, which can help to understand the flow of the method, no more detailed will be given for this.

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Abstract

The present invention proposes a connection module considering, at the same time, the possible crosstalk caused by untwisted cable, and the number of terminal contacts in the module with a given size. According to one embodiment of the present invention, there is provided A connection module, comprising: a plurality of terminal contacts; a plurality of conductive shield plates, each of which being set between two adjacent terminal contacts; a trestle configured to receive the plurality of terminal contacts and conductive shield plates; at least one conductive shield strip arranged along at least one outer side of the terminal contacts, each of which conductively interconnecting at least a part of the plurality of conductive shield plates; at least one conductive ground contact for grounding said at least one conductive shield strip.

Description

CONNECTION MODULE
Technical field
This invention relates to communication cabling, more specifically, to a connection module used for conductors.
Background of the invention
In communication cabling systems, a connection module is often adopted to form a node between a switch device and user equipments. Examples of such switch device include digital subscriber line access multiplexer (DSLAM), examples of user equipments can be personal computers, laptops.
In the art, it is known to decrease the electromagnetic coupling between twisted conductor pairs in a cable by using different twist rates among the pairs. Referring to Fig. l , in cable 1 , the twist rates of conductor pairs 1 1 , 12, 13 and 14 are preferably different. Before being connected to a connection module, the pairs need to be untwisted. When this kind of cable is adopted to carry high frequency signals, there will probably be electromagnetic coupling between adjacent terminal contacts connected to the conductors, the ones belonging to the same pair or different pairs, e.g. conductors 131 and 141. Hereinafter, electromagnetic coupling will be also referred to as crosstalk.
According to one of the prior arts, to decrease the crosstalk on a connection module due to untwisted conductor pairs, the distance between terminal contacts have to be elongated. This may limit the number of terminal contacts in a connection module with a given size, or need a larger connection module to receive a given number of terminal contacts.
Therefore, it is desirable to develop optimized connection module, especially for high frequency signal transmission.
Summary of the invention
The present invention considers, at the same time, the possible crosstalk caused by untwisted conductor pairs and the number of terminal contacts in the module with a given size. The solution provided by this invention has a good performance when used for high frequency signal transmission, but, this can not be understood as the invention should be limited to high frequency applications, because not only the frequency but also other characters of the signal and even the physical configuration of the cable can cause crosstalk.
According to one embodiment of the present invention, there is provided a connection module, comprising: a plurality of terminal contacts; a plurality of conductive shield plates, each of which being set between two adjacent terminal contacts; a trestle configured to receive the plurality of terminal contacts and conductive shield plates; at least one conductive shield strip arranged along at least one outer side of the terminal contacts, each of which conductively interconnecting at least a part of the plurality of conductive shield plates; at least one conductive ground contact for grounding said at least one conductive shield strip.
According to another embodiment of the present invention, there is provided a device for preventing crosstalk on a connection module including a plurality of terminal contacts, comprising: a plurality of conductive shield plates; at least one conductive shield strip to be arranged along at least one outer side of the terminal contacts, each of which conductively interconnecting at least a part of said plurality of conductive shield plates; at least one conductive ground contact for grounding said at least one conductive shield strip.
According to still another embodiment of the present invention, there is provided a method for preventing crosstalk on a connection module including a plurality of terminal contacts, the method comprising the steps of: a. providing a plurality of conductive shield plates, at least one conductive shield strip as well as at least one conductive ground contact; b. setting each of the plurality of conductive shield plates between two adjacent terminal contacts; c. arranging said at least one conductive shield strip along at least one outer side of the terminal contacts, each conductive shield strip then conductively interconnecting at least a part of the plurality of conductive shield plates, and grounding the at least one conductive shield strip with said at least one conductive ground contact.
With the aid of the present invention, the crosstalk between adjacent terminal contacts can be decreased and the requirements provided by Category 6 (250MHz) are well met in high frequency application.
Brief description of the drawings
The above and other objects, characteristics and merits of the present invention will become more apparent from the following detailed description considered in connection with the accompanying drawings, in which:
Fig.l is a perspective view of a cable with a portion of the cover removed for the purpose of illustration;
Figs.2a-2b illustrate the appearance of a connection module according to one embodiment of the invention;
Fig.3a is a perspective view of a connection module connected with a cable of Category 6;
Fig.3b is an enlarged view of the area A in Fig.3a;
Figs.4a-4c are exploded views of the connection module in Fig.3a;
Fig.5 is an enlarged view of two parts of a terminal contact in the connection module according to one embodiment of the invention;
Figs.6a-6b are enlarged views of a conductive shield plate in the connection module according to one embodiment of the invention;
Figs.7a-7b are enlarged views of a conductive shield strip in the connection module according to one embodiment of the invention;
Fig.8 is an enlarged view of a conductive ground contact in the connection module according to one embodiment of the invention;
Fig.9 is an enlarged view of a support part in the connection module according to one embodiment of the invention;
Fig.10 shows how a conductive ground contact in Fig.8 is supported by a support part in Fig.9;
Figs. l la-l lb illustrate perspective views of the connection module in Fig.3 a with the first portion of the housing removed;
Fig.12 is an enlarged view of the area B in Fig. 10a;
Fig.13 is an enlarged end view of the components for cross prevention according to one embodiment of the invention;
Fig.14a is a part of the side view of area B in Fig. 1 1a;
Fig.14b is an end view of area B in Fig.1 la;
Fig.15 is a rear view of a connection module according to one embodiment of the invention;
Fig.16 is a flowchart of the method for preventing crosstalk on a connection module including a plurality of terminal contacts according to one embodiment of the invention.
Wherein, same or analogous reference numerals are used to represent same or analogous step features/de vices (modules) throughout the figures.
Detailed description of the embodiments
Figs.2a-2b illustrate the appearance of a connection module 10 according to one embodiment of the invention. In practice, the connection module may be provided with a housing 1 1 for damage or dust prevention.
Referring to Fig.2a, the housing 1 1 is, without loss of generality, composed of a first portion 2 and a second portion 3 designed in pair for assembling. As shown in Fig.2a, the first portion 2 has several (e.g. 5) latching openings 21, while the second portion 3 has several (e.g. 5) latching lugs 31 having inclined planes in match with the latching openings 21. In assembling process, the first and the second portions will be moved toward each other, and the latching lugs 31 work together with the latching openings 21 to fix the first portion 2 to the second portion 3 in at least direction Z, and vice versa. Further, the second portion 3 is provided with several (e.g. 4) projections 32, which exceed the bottom limb of the first portion 2 after assembling and therefore help to fix the portions to each other in direction X. Preferably, the aforesaid components for fixing are disposed on both sides of the housing 11.
Those skilled in the art understand that the ways of fixing the portions of the housing 1 1 to each other is just exemplary, many existing ways of fixing different portions are also applicable. And, the housing of a connection module does not have to be formed in a two-portion manner, it can be integrally formed or composed of more portions.
The housing 1 1 houses other components of the connection module well without affecting any basic function thereof. For example, the teeth-like chambers 22 cover the terminal contacts (not shown in Fig. 2a or 2b) and prevent them from dust and damage, while the spaces 23 allow the conductors to be inserted in so as to get their cover cut and form the electrical connection with the terminal contacts. This will be described in further detail below.
It should be already appreciated that for a connection module according to one embodiment of the invention, a housing is dispensable.
Referring to Fig. 3a, wherein a perspective view of a connection module connected with a UTP cable of Category 6 is illustrated. It should be understood that the connection module is surely not limited to be connected to UTP cable of Category 6, and in practice, there may be more cables being connected to the connection module.
As mentioned above, the connection module 10 is typically configured between a switch device and user equipments. In this embodiment, cable 1 is connected to the switch side and cable 1 ' is connected to the user side. For instance, a signal from conductor 11 1 ' of untwisted conductor pair 11 ' will be conveyed by a terminal contact, specifically by its portion for signal transmission, to conductor 1 11 of untwisted conductor pair 1 1. In many cases, the signals carried by the same conductor pair will have the same, that's to say, the signal from conductor 1 1 1 ' to conductor 11 1 will be somewhat the same with the signal from conductor 112' to conductor 112. But, signals carried by different conductor pairs are usually different.
Figs.4a-4c are exploded views of the connection module 10 in Fig.3a.
The connection module 10 includes, beside the housing 1 1 , a plurality of (e.g. 50) terminal contacts 4, configured to establish connection with cables, e.g. cables 1 and 1 'shown in Figs.3a-3b. These terminal contacts 4 are typically provided in pairs, each pair is configured to be connected to two conductors of an individual untwisted conductor pair.
According to one embodiment of the invention, every terminal contact has two individual pieces. Referring to Fig.5, which is an enlarged view of the two pieces of one terminal contact 4. Without loss of generality, the two pieces are symmetrical. Taking the piece on the left as instance, its upper portion 41 will be covered by a teeth-like chamber 22 on the first portion 2 of housing 1 1 , leaving the contact slot 41 1 appealed at least partially for the connection with a conductor.
The lower part 42 is configured to get in contact with the lower part of the other piece of the terminal contact 4 at contact point 421 (i.e. the piece on the right in Fig. 5), and also configured to ensure the stability of the terminal contact 4 when it is received by some other component of the connection module, e.g. a trestle which will be described shortly below.
It should be appreciated that the terminal contacts 4 in the connection module can also be integrative, which may have almost the same structure as the one including two independent parts.
To realize a stable connection, a conductor can be inserted into the space defined by two arms 412 and 413. Alternatively, a terminal contact can be in a simple V-like or U-like shape, and a conductor can be wound surrounding one end of the terminal contact for connection.
The connection module 10 shown in Fig. 4a also comprises a trestle 7, which is configured to receive the terminal contacts 4. According to this embodiment, the trestle 7 includes a plurality of units 71 , each of which is configured to receive a pair of terminal contacts. Advantageously, the inside structure of every unit 71 is in match with the lower parts of each piece of the terminal contacts, so as to ensure the stability of the received terminal contacts. At the same time, upper portions of the two terminal contacts will emerge from the top limb of the sub-unit, to make connection establishment possible.
According to one embodiment of the invention, the trestle 7 is mounted to the second portion 3 of housing 1 1.
Alternatively, the trestle 7 is further configured to be the base of the connection module. For example, the trestle 7 and the second portion 3 of housing 1 1 can be integrative and then the trestle 7 becomes a part of housing 1 1.
According to one embodiment of the invention, the crosstalk is prevented by means of electromagnetic shielding. Electromagnetic shielding is the process of limiting the penetration of electromagnetic fields into a space, by blocking them with a barrier made of conductive material. Typically it is applied to enclosures, separating electrical devices from the outside, and to cables, separating wires from the environment the cable runs through. Electromagnetic shielding used to block radio frequency electromagnetic radiation is also known as RF shielding. The shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields, though not static or low-frequency magnetic fields. The amount of reduction depends upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic field, etc.
Components of the connection module 10 in close connection with the electromagnetic shielding will be described in detail below.
The connection module 10 in Fig. 4a is provided with a plurality of (i.e. 24) conductive shield plates 5. According to relative standard in relation to Category Six, the crosstalk (if any) between adjacent terminal contacts connected to conductors carrying different signals (e.g. signals having different frequencies) should be taken into consideration. Hence, according to one embodiment of the invention, the crosstalk between adjacent terminal contacts connected to conductors carrying different signals should be prevented with higher priority. However, this should not, in any circumstance, be understood as that the invention should be limited to this example. It is also covered by the invention if some or all of the conductive shield plates 5 are set between terminal contacts connected to conductors carrying the same signal, e.g. signal having the same frequency.
In practice, terminal contacts 4 are sometimes artificially defined as a plurality of (e.g. twenty four) terminal contact pairs. Further, conductors of an untwisted conductor pair which are carrying the same signal are usually connected to terminal contacts belonging to the same terminal contact pair.
According to one exemplary embodiment of the invention, twenty four conductive shield plates 5 are set in such a manner that each of them is between two adjacent terminal contacts belonging to different terminal contact pairs, as shown in Fig. 4a.
Advantageously, each conductive shield plate 5 is received in the space 72 defined by and between two units 71 of the trestle 7.
A conductive shield plate 5 according to one embodiment of the invention is shown in Figs. 6a-6b. It is formed by an upper portion 51 and a lower part 52 which further comprises an elastic portion 521 at each outer side. The elastic portions 521 will emerge from the space 72 when the plate 5 has been received by the trestle 7. Other features, advantages and variations of the conductive shield plate 5 will be described in further detail below.
According to one embodiment of the invention, the conductive shield plates are made of conductive material. To be specific, they are made of metal. To be more specific, they are made of stainless steel.
There is further provided at least one conductive shield strip arranged along at least one outer side of the terminal contacts, each of which is configured to conductively interconnect at least a part of the conductive shield plates. According to the embodiment in Fig.4a, there are two conductive shield strips, namely the first conductive shield strip 61 and the second conductive shield strip 62. The first conductive shield strip 61 conductively interconnects the twenty four conductive shield plates on one side, i.e. the front side in view of Fig. 4a, the second conductive shield strip 62 conductively interconnects the twenty four conductive shield plates on the other side, i.e. the back side in view of Fig. 4a. Other features, advantages and variations of the conductive shield strips 61 , 62 will be described in further detail below. A conductive shield strip according to the present invention, e.g. conductive shield strip 61 , is shown in Figs. 7a-7b. Preferably, it is provided with a turning at both ends, which will be helpful to establish connections with other components of the connection module 10, such as conductive ground contacts 81 and 82 which will be described below.
According to one embodiment of the invention, the conductive shield strips are made of metal. More specifically, they are made of copper, which is chosen considering the balance between the cost and conductivity.
Alternatively, the at least one conductive shield strip can be integrative which is like a ring surrounding the plates and terminal contacts.
Alternatively, the at least one conductive shield strip may be not as long as the ones shown in the figures, so that only some of the terminal contacts will be surrounded for crosstalk prevention. Advantageously, there will be a slot along each side of the connection module, in which a conductive shield strip is allocated so that the conductive shield strip can be moved according to need, e.g. when only some of the terminal contacts are used for signal transmission, the conductive shield strip will be moved to where the in-use terminal contacts can be well shielded.
Alternatively, the number of conductive shield strips maybe larger than two as shown in the figures. For example, each of the first and second conductive shield strips in Fig. 4a can be replaced by several shorter conductive shield strips formed end to end.
Referring to Fig.4a and Fig. 8, the connection module 10 is further provided with two conductive ground contact for grounding the conductive shield strips 61 and 62, e.g. the first conductive ground contact 81 and the second conductive ground contact 82. The first conductive ground contact 81 connects one end of the first conductive shield strips 61 to one end of the second conductive shield strip 62, whilst the second conductive ground contact 82 connects the other end of the first conductive shield strip 61 to the other end of the second conductive shield strip 62. Both of the conductive ground contacts will be further connected to a ground lead (not shown) for grounding. There are variable solutions as to grounding in the prior arts, to which reference will be made in short below.
Referring to Figs.9- 10, the conductive ground contacts 81 , 82 are respectively supported by support parts 91 and 92. Fig.10 shows how a conductive ground contact in Fig.8 is supported by a support part in Fig.9, wherein a ground lead is also shown illustratively.
Those skilled in the art understand that, in case that the trestle 7 or the second housing portion 3 is capable of holding the conductive ground contacts, the support parts can be omitted.
Hereinafter, reference will be made to other aspect, features, and advantages, referring more detailed views in Figs. 1 1 a- 15.
Figs. l la-l lb show perspective views of the connection module in
Fig.2a with the first portion of housing removed, hence the covered components can be seen directly, wherein, the terminal contacts 4 and also conductive shield plates 5 have been received by the trestle 7. The trestle 7 is mostly covered by the conductive shield strips 61 and 62, with only the top limbs of the units 71 emerge therefrom.
Referring to Fig.1 1 a, Fig. 12 and Fig. 13, the conductive shield plates 5 are conductively interconnected by the conductive shield strips 61 and 62 respectively. The conductive shield strips are then connected by the conductive ground contacts 81 and 82 at both ends and grounded.
Therefore, possible crosstalk between terminal contacts can be prevented.
It should be appreciated that the shield strips can get in touch with each other at both ends without the aid of the ground contacts, in which case the ground conducts are mainly used for grounding.
Fig.12 shows an enlarged view of area B indicated in Fig.1 1a, wherein the way in which the components contact each other become clearer. Wherein, there is a room 122 defined by the two conductive shield plates and shield strips 61 ,62, as well as a room 121 defined by the conductive shield plate on the left, shield strips 61 , 62 and the conductive ground contact 81. According to Fig. 12, since shield strips 61 ,62 are not in contact with each other at their ends, so we use ground contact 81 to help to define the room 121. Similarly, at the other end of the connection module (not shown in Fig. 12), ground contact 82 may help to define a room. As mentioned above, in case shield strips 61 ,62 contact with each other at their ends, ground contacts will need not to participate in the form the rooms. It should be already appreciated that other conductive shield plates will form more rooms with the shield strips 61 , 62.
Reference will be made with respect to the aforesaid rooms by taking room 121 ,122 as instance, without loss of generality. Referring to Fig.12, the terminal contacts and conductive shield plates are granted with new numerical references for the purpose of explanation. Wherein, room 121 contains the portions for signal transmission of terminal contacts 401 and 402. Taking terminal contact 401 as an example, the portion for signal transmission of a terminal contact will be clear by consider the path in which signal will go through the terminal contact 401. Typically, the signal flows in at a point on slot 41 1 where the contactor gets in touch with the terminal contact 401 , the signal goes down to the lower part of one piece, and then conducted to another piece, goes up till it flows out at a point on slot 41 1 ' where another conductor connects to the terminal contact 401. It should be already appreciated that the width of the conductive shield strips shown in the drawings are just illustrative, it can extend, for example, in direction Z, preferably on the premise that the configuration of the conductor will not be influenced, for example, by leaving the conductor a slot or the like.
The rooms described above are advantageous in eliminating crosstalk. Specifically, the conductive shield plates can prevent electromagnetic radiation in substantially direction Y and the reverse direction; the conductive shield strips can prevent electromagnetic radiation in substantially direction X and the reverse direction, so that the radiation can hardly bypassing a conductive shield plate on the edge sides. Moreover, the conductive shield strips, alternatively together with the ground contacts, prevent electromagnetic radiation in substantially direction Y and the reverse direction at both ends of the connection module.
Fig.14a is a part of the side view of area B in Fig. 1 la. It is notable that, after assembling, conductive shield plate 501 is not lower than the two adjacent terminal contacts 402 and 403 between which the conductive shield plate 501 is set. More preferably, as illustrated in Fig.14a, conductive shield plate 501 is higher than the two adjacent terminals contacts 402,403. Therefore, it will be much harder for the radiation to bypass the plate 501 from its top side, so that the performance of crosstalk prevention is further improved. This is also applicable for other conductive shield plates on the connection module.
Referring to Fig.14b, wherein the end view of area B in Fig. l l a is illustrated. Preferably, after assembling, conductive shield plate 5 has a width no less than the two adjacent terminal contacts 402, 403 (blocked by the plate 501 in the figure) between which conductive shield plate 501 is set. More preferably, conductive shield plate 5 has a width larger than the two adjacent terminal contacts. Therefore, when the width of the conductive shield strips 61 ,62 are limited as shown in Fig.12, even if the radiation is capable to spread in direction X and the revert direction, it is still hard for it to by pass the conductive shield plate, so that the crosstalk can be prevented. This is also applicable for other conductive shield plates on the connection module.
According to one preferable example of the invention, after assembling, i.e. when the terminal contacts and conductive shield plates have been received by trestle 7, the distance between two adjacent terminal contacts which will be connected to conductors carrying the same signal is shorter than one between two adjacent terminal contacts which will be connected to conductors carrying different signals. To be specific, referring to Fig. 12 and Fig.14a, the distance between terminal contacts 401 and 402 is shorter than the distance between terminal contacts 402 and 403. This makes it easier to place the conductive shield plate 501. Moreover, the longer distance between terminal contacts 402 and 403 is also helpful to decrease the possible crosstalk between the two terminal contacts, to which more attention should be paid according to Category Six.
Referring to Fig. 6a-6b, Fig.1 1a, Fig.13 and Fig.15, when the conductive shield plates 5 are received by the trestle 7, for each of them, the elastic portions 521 will at least partially emerge from the space defined by two units on the trestle 7. Since the two conductive shield strips 61 and 62 are set and limited to be surrounding the trestle 7, the elastic portions 521 of every conductive shield plate 5 will get in contact with the inside wall of the conductive shield strips, and hence the conductive shield plates are conductively interconnected. Advantageously, after assembling, the elastic portions 521 will possess elastic potential energy due to the pressure provided by the conductive shield strips. Therefore, in case that the conductive shield strips become to deform away from the conductive shield plates 5 due to temperature shift, external force or material aging, the elastic portions 521 will release the stored elastic potential energy and keep in effective contact with the conductive shield strips, which makes it possible to maintain the advantageous electromagnetic shielding. This advantage may become clearer by referring to Figs.13 and 15.
Based upon explanation as above, it should also be appreciated that:
1. it is not strictly necessary to connect the conductive shield strips at both end of them like what's shown in the figures. It is still contributive to ground the strips directly without connecting them to each other.
2. it is just an example to provide the connection module with two conductive shield strips, which may be easy in assembly process. According to another embodiment of the invention, a single conductive shield strip could be bent so as to be surrounding the trestle 7 and to interconnect the conductive shield plates conductively. According to still another embodiment of the invention, more conductive shield strips can be grounded by properly designed ground slips.
3. it is not strictly necessary to interconnect and ground all conductive shield plates. It is also contributive even only part of them are interconnected and grounded.
4. the connection module is adaptable to but not limited to high frequency signal transmission. According to one embodiment of the invention, there is provided a device for preventing crosstalk on a connection module including a plurality of terminal contacts. The device may be a subset of the aforementioned connection module, and can be produced or sale separately from the connection module. The manufacture of connection modules can purchase this device and mount it onto a connection module for optimized the performance. The device typically comprises the following components, see Fig. 13 : a plurality of conductive shield plates; at least one conductive shield strip; at least one conductive ground contact.
Referring to Fig.16, there is illustrated a flowchart of a method for preventing crosstalk on a connection module including a plurality of terminal contacts described in the context.
Firstly, in step S I 601 , there is provided a plurality of conductive shield plates, at least one conductive shield strip as well as at least one conductive ground contact. According to the embodiment as show in Fig. 1 1 a, there are twenty four conductive shield plates, two conductive shield strips and two conductive ground contacts.
Secondly, in step S I 602, each of the plurality of conductive shield plates is set between two adjacent terminal contacts. Without loss of generality, each of the twenty four conductive shield plates is set between two adjacent terminal contacts to be connected to conductors carrying different signals. The total number of conductive shield plates may be a balance between the effects of restraining crosstalk and the cost.
Thirdly, in step S I 603, the at least one conductive shield strip will be arranged along at least one outer side of the terminal contacts, each conductive shield strip then conductively interconnecting at least a part of the plurality of conductive shield plates. According to the embodiment shown in Fig. 1 1 a, all of the twenty four conductive shield plates are interconnected by the two conductive shield strips.
Finally, in step S I 604, the at least one conductive shield strip will be grounded with the at least one conductive ground contact, therefore the conductive shield plates are grounded.
Additionally, rooms each of which contains the portion for signal transmission of at least one of the terminal contacts are defined by using the conductive shield strip and the conductive shield plates.
Additionally, the rooms are defined by using the at least one conductive shield strip, the conductive shield plates and the at least one conductive ground contact.
Additionally, each conductive shield plate is not lower than two adjacent terminal contacts of the connection module between which said conductive shield plate is set, when said conductive shield plate has been received by the connection module.
Additionally, each conductive shield plate is higher than two adjacent terminal contacts of the connection module between which said conductive shield plate is set, when said conductive shield plate has been received by the connection module.
Additionally, each conductive shield plate has a width no less than the two adjacent terminal contacts between which said conductive shield plate is set.
Additionally, wherein each conductive shield plate has a width larger than the two adjacent terminal contacts between which said conductive shield plate is set.
Additionally, wherein the at least one conductive shield strip includes a first conductive shield strip and a second conductive shield strip, the first conductive shield strip conductively interconnecting the plurality of conductive shield plates on one side of the plurality of conductive shield plates, the second conductive shield strip conductively interconnecting the plurality of conductive shield plates one the other edge side of the plurality of conductive shield plates.
Additionally, the at least one conductive ground contact includes a first conductive ground contact and a second conductive ground contact, the first conductive ground contact is configured to connect one end of the first conductive shield strip to one end of the second conductive shield strip and the second conductive ground contact configured to connect the other end of the first conductive shield strip to the other end of the second conductive ground contact.
Additionally, each of the plurality of conductive shield plates is set between two adjacent terminal contacts to be connected to conductors carrying different signals.
Since the context includes detailed description of the connection module, which can help to understand the flow of the method, no more detailed will be given for this.
It should be noted that the above-described embodiments is for purpose of illustration only and not to be construed as limitation of the invention. All such modifications which do not depart from the spirit of the invention are intended to be included within the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim or in the description. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. In the apparatus claims enumerating several units, several of these units can be embodied by one and the same item of hardware or software. The usage of the words first, second and third, et cetera, does not indicate any ordering. These words are to be interpreted as names.

Claims

What is claimed is:
1. A connection module, comprising:
a plurality of terminal contacts;
a plurality of conductive shield plates, each of which being set between two adjacent terminal contacts;
a trestle configured to receive the plurality of terminal contacts and conductive shield plates;
at least one conductive shield strip arranged along at least one outer side of the terminal contacts, each of which conductively interconnecting at least a part of the plurality of conductive shield plates;
at least one conductive ground contact for grounding said at least one conductive shield strip.
2. A connection module according to claim 1 , wherein the at least one conductive shield strip and the conductive shield plates defines rooms each of which contains the portion for signal transmission of at least one of the terminal contacts.
3. A connection module according to claim 2, wherein the at least one conductive shield strip, the conductive shield plates and the at least one conductive ground contact defines the rooms each of which contains the portion for signal transmission of at least one of the terminal contacts.
4. A connection module according to claim 1 , wherein each conductive shield plate is not lower than the two adjacent terminal contacts between which said conductive shield plate is set, when said conductive shield plate and the two adjacent terminal contacts have been received by said trestle.
5. A connection module according to claim 4, wherein each conductive shield plate is higher than the two adjacent terminal contacts between which said conductive shield plate is set, when said conductive shield plate and the two adjacent terminals have been received by the trestle.
6. A connection module according to claim 1 , wherein each conductive shield plate has a width no less than the two adjacent terminal contacts between which said conductive shield plate is set.
7. A connection module according to claim 6, wherein each conductive shield plate has a width larger than the two adjacent terminal contacts between which said conductive shield plate is set.
8. A connection module according to claim 1 , wherein the at least one conductive shield strip includes a first conductive shield strip and a second conductive shield strip, the first conductive shield strip conductively interconnecting the plurality of conductive shield plates on one side of the plurality of conductive shield plates, the second conductive shield strip conductively interconnecting the plurality of conductive shield plates one the other edge side of the plurality of conductive shield plates.
9. A connection module according to claim 8, wherein the at least one conductive ground contact includes a first conductive ground contact and a second conductive ground contact, the first conductive ground contact is configured to connect one end of the first conductive shield strip to one end of the second conductive shield strip and the second conductive ground contact configured to connect the other end of the first conductive shield strip to the other end of the second conductive ground contact.
10. A connection module according to claim 1 , wherein each of said plurality of conductive shield plates is set between two adjacent terminal contacts to be connected to conductors carrying different signals.
1 1. A connection module according to claim 1 , wherein the distance between two adjacent terminal contacts to be connected to conductors carrying the same signal is shorter than the distance between two adjacent terminal contacts to be connected to conductors carrying different signals.
12. A connection module according to claim 1 , wherein each conductive shield plate is provided with an elastic portion on at least one outer side of the conductive shield plate.
13. A connection module according to claim 1 , wherein the plurality of conductive shield plates are made of stainless steel.
14. A connection module according to claim 1 , wherein the at least one of conductive shield strip is made of copper.
15. A connection module according to claim 1 , wherein each of the plurality of terminal contacts consists of two parts in contact when the terminal contact has been received by the trestle, and the two parts can be separated from each other.
16. A connection module according to any of claims 1 to 15, wherein the connection module is used for high frequency signal transmission.
17. A device for preventing crosstalk on a connection module including a plurality of terminal contacts, comprises:
a plurality of conductive shield plates;
at least one conductive shield strip to be arranged along at least one outer side of the terminal contacts, each of which conductively interconnecting at least a part of said plurality of conductive shield plates;
at least one conductive ground contact for grounding said at least one conductive shield strip.
18. A device for preventing crosstalk on a connection module including a plurality of terminal contacts according to claim 17, wherein the at least one conductive shield strip and the conductive shield plates defines rooms each of which is configured to contain the portion for signal transmission of at least one of the terminal contacts.
19. A device for preventing crosstalk on a connection module including a plurality of terminal contacts according to claim 18, wherein the at least one conductive shield strip, the conductive shield plates and the at least one conductive ground contact defines the rooms each of which contains the portion for signal transmission of at least one of the terminal contacts.
20. A device for preventing crosstalk on a connection module including a plurality of terminal contacts according to claim 17, wherein, after assembling, each conductive shield plate is not lower than two adjacent terminal contacts between which said conductive shield plate is set.
21. A device for preventing crosstalk on a connection module including a plurality of terminal contacts according to claim 20, wherein, after assembling, each conductive shield plate is higher than the two adjacent terminal contacts between which said conductive shield plate is set.
22. A device for preventing crosstalk on a connection module including a plurality of terminal contacts according to claim 17, wherein each conductive shield plate has a width no less than the two adjacent terminal contacts between which said conductive shield plate is set.
23. A device for preventing crosstalk on a connection module including a plurality of terminal contacts according to claim 22, wherein each conductive shield plate has a width larger than the two adjacent terminal contacts between which said conductive shield plate is set.
24. A device for preventing crosstalk on a connection module including a plurality of terminal contacts according to claim 17, wherein the at least one conductive shield strip includes a first conductive shield strip and a second conductive shield strip, the first conductive shield strip conductively interconnecting the plurality of conductive shield plates on one side of the plurality of conductive shield plates, the second conductive shield strip conductively interconnecting the plurality of conductive shield plates one the other edge side of the plurality of conductive shield plates.
25. A device for preventing crosstalk on a connection module including a plurality of terminal contacts according to claim 24, wherein the at least one conductive ground contact includes a first conductive ground contact and a second conductive ground contact, the first conductive ground contact is configured to connect one end of the first conductive shield strip to one end of the second conductive shield strip and the second conductive ground contact configured to connect the other end of the first conductive shield strip to the other end of the second conductive ground contact.
26. A method for preventing crosstalk on a connection module including a plurality of terminal contacts, the method comprising the steps of:
a. providing a plurality of conductive shield plates, at least one conductive shield strip as well as at least one conductive ground contact; b. setting each of the plurality of conductive shield plates between two adjacent terminal contacts;
c. arranging said at least one conductive shield strip along at least one outer side of the terminal contacts, each conductive shield strip then conductively interconnecting at least a part of the plurality of conductive shield plates;
d. grounding the at least one conductive shield strip with said at least one conductive ground contact.
27. A method according to claim 26, wherein step c further comprising:
- defining rooms each of which contains the portion for signal transmission of at least one of the terminal contacts by using the conductive shield strip and the conductive shield plates.
28. A method according to claim 27, wherein step c further comprising:
- defining rooms each of which contains the portion for signal transmission of at least one of the terminal contacts by using the at least one conductive shield strip, the conductive shield plates and the at least one conductive ground contact.
29. A method according to claim 26, wherein each conductive shield plate is not lower than two adjacent terminal contacts of the connection module between which said conductive shield plate is set, when said conductive shield plate has been received by the connection module.
30. A method according to claim 29, wherein each conductive shield plate is higher than two adjacent terminal contacts of the connection module between which said conductive shield plate is set, when said conductive shield plate has been received by the connection module.
31. A method according to claim 26, wherein each conductive shield plate has a width no less than the two adjacent terminal contacts between which said conductive shield plate is set.
32. A method according to claim 31 , wherein each conductive shield plate has a width larger than the two adjacent terminal contacts between which said conductive shield plate is set.
33. A method according to claim 26, wherein the at least one conductive shield strip includes a first conductive shield strip and a second conductive shield strip, the first conductive shield strip conductively interconnecting the plurality of conductive shield plates on one side of the plurality of conductive shield plates, the second conductive shield strip conductively interconnecting the plurality of conductive shield plates one the other edge side of the plurality of conductive shield plates.
34. A method according to claim 33, wherein the at least one conductive ground contact includes a first conductive ground contact and a second conductive ground contact, the first conductive ground contact is configured to connect one end of the first conductive shield strip to one end of the second conductive shield strip and the second conductive ground contact configured to connect the other end of the first conductive shield strip to the other end of the second conductive ground contact.
35. A method according to claim 26, wherein step b further comprises:
- setting each of the plurality of conductive shield plates between two adjacent terminal contacts to be connected to conductors carrying different signals.
PCT/CN2010/073359 2010-05-28 2010-05-28 Connection module WO2011147100A1 (en)

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WO2013091009A1 (en) * 2011-12-23 2013-06-27 Tyco Electronics Services Gmbh Telecommunications cabling system, and electrical connection module and shielding interface therefor
US9368917B2 (en) 2011-12-23 2016-06-14 Commscope Technologies Llc Telecommunications cabling system, and electrical connection module and shielding interface therefor
US9893470B2 (en) 2011-12-23 2018-02-13 Commscope Technologies Llc Telecommunications cabling system, and electrical connection module shielding interface therefor
CN110011095A (en) * 2019-04-09 2019-07-12 四川华丰企业集团有限公司 Barricade, modular structure and electric connector
CN110011095B (en) * 2019-04-09 2024-04-19 四川华丰科技股份有限公司 Shielding plate, module structure and electric connector

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