EP0787372B1 - Bloc terminal de telecommunication modulaire - Google Patents

Bloc terminal de telecommunication modulaire Download PDF

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Publication number
EP0787372B1
EP0787372B1 EP95901007A EP95901007A EP0787372B1 EP 0787372 B1 EP0787372 B1 EP 0787372B1 EP 95901007 A EP95901007 A EP 95901007A EP 95901007 A EP95901007 A EP 95901007A EP 0787372 B1 EP0787372 B1 EP 0787372B1
Authority
EP
European Patent Office
Prior art keywords
wire
terminal block
exchange
service
earth
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP95901007A
Other languages
German (de)
English (en)
Other versions
EP0787372A4 (fr
EP0787372A1 (fr
Inventor
Charles W. Waas
Mark R. Jespersen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Priority to EP20020006456 priority Critical patent/EP1248319A1/fr
Priority to ES95901007T priority patent/ES2183861T3/es
Publication of EP0787372A1 publication Critical patent/EP0787372A1/fr
Publication of EP0787372A4 publication Critical patent/EP0787372A4/fr
Application granted granted Critical
Publication of EP0787372B1 publication Critical patent/EP0787372B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • H01R9/2425—Structural association with built-in components
    • H01R9/2441—Structural association with built-in components with built-in overvoltage protection
    • 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
    • H01R4/2404—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation
    • H01R4/2408—Connections using contact members penetrating or cutting insulation or cable strands the contact members having teeth, prongs, pins or needles penetrating the insulation actuated by clamping screws
    • 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
    • H01R4/2425—Flat plates, e.g. multi-layered flat plates
    • H01R4/2429—Flat plates, e.g. multi-layered flat plates mounted in an insulating base
    • H01R4/2433—Flat plates, e.g. multi-layered flat plates mounted in an insulating base one part of the base being movable to push the cable into the slot
    • 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
    • H01R9/2483—Terminal blocks specially adapted for ground connection
    • 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
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting
    • H01R9/2625—Clip-on terminal blocks for side-by-side rail- or strip-mounting with built-in electrical component

Definitions

  • the service side In order to properly test connections and determine if a problem is related to the exchange side or the service side is it necessary to disconnect one side so that either side may be evaluated independently. Generally, the service side is disconnected because it may not be possible to disconnect the exchange side wires. In this case, additional time is spent disconnecting the service side wires, stripping the wires, and connecting the wires to test equipment to assess the problem. Once the problem is solved, the test assembly must be removed and the service side wires connected to the terminal block. This process requires significant time.
  • a pair of exchange wire access slots are provided on the housing to receive a pair of exchange wires.
  • the exchange wire carrier is movable between an open position and a closed position and receives each of the exchange wires into respective exchange wire conduits.
  • the exchange wire carrier is held in place in the selected position by a retaining stub which slides into either of two retaining stub slots in the housing which correspond to the chosen position, open or closed, of the exchange wire carrier.
  • the linking module may include many types of plug-in units including a bridge module which simply connects the service side to the exchange side.
  • Another embodiment includes a protector module which connects the service and exchange sides when plugged into the access jack and includes a twin gas discharge tube and an earth junction contact. Each end of the twin gas discharge tube is soldered to one set of contacts and the earth junction contact is conductively connected to the center of the gas discharge tube.
  • the another embodiment of the linking module is the two-way testing module.
  • the two way testing module includes a set of service wire testing contacts and a set of exchange wire testing contacts.
  • the cover of the two way testing module includes a bayonet contact.
  • the service wire and exchange wire testing contacts are each formed with a slot which retains the bayonet contact and which connects the service side to the exchange side when the bayonet contact is inserted.
  • the bayonet contact is automatically inserted into the testing contacts when the cover of the two-way testing module is closed. Therefore, when the cover is closed the exchange side is connected to the service side.
  • the two-way testing module is sealed with a gasket when the lid is closed. The gasket provides the internal components of the gasket with protection from the environment.
  • the earth junction contact needs to be at earth potential.
  • the mounting rail is connected to earth during installation.
  • the mounting rail thus provides the necessary earth connection point for each terminal block.
  • a terminal block earth connector retained within the exchange wire carrier is connected to the mounting rail earth connector.
  • the terminal block earth connector is conductively connected to an earth junction contact retained in the central slot of the access jack. Therefore, when the protector module is plugged into the access jack, the earth junction contact enters the center slot of the access jack and connects the protector module to earth through the mounting rail.
  • the gas discharge tube and earth junction contact connection perform in conjunction with the two sets of contacts to shunt voltage to earth in the event there are voltage spikes on the conductive path between the service side and the exchange side, for example.
  • Room is provided in the exchange wire carrier, the chamber containing the service wire carrier and the linking module for the insulating medium, such as a grease or gel, to be injected so as to surround each wire carrier and set of contacts and fill the wire engaging openings in the carriers.
  • the medium flows around the respective carriers during wire termination without forcing medium out of the housing.
  • the service wires may be removed and reconnected through the service side openings and the service wire carrier numerous times.
  • the present invention provides an improved telecommunications terminal block having significantly improved resistance to environmental factors such as moisture, chemicals and other such contaminants while retaining a relatively simple construction.
  • Figure 1 is a perspective view of a service side of a preferred embodiment of the modular terminal block system of the present invention.
  • Figure 2 is a perspective view of an exchange side of a preferred embodiment of a plurality of the modular terminal block system of the present invention showing a pair of exchange side wires connected to one terminal block.
  • Figure 3 is an exploded view of the basic components of the terminal block housing including a service side wire carrier and an exchange side wire carrier of the present invention.
  • Figure 5 is a broken away view showing an interior of a terminal block in accordance with the present invention, illustrating an exchange side wire carrier position before terminating an exchange wire and a service side wire carrier position before terminating a service wire.
  • Figure 6 is a broken away view showing an interior of a terminal block in accordance with the present invention, illustrating an exchange side wire carrier position after terminating an exchange wire and a service side wire carrier position after terminating a service wire.
  • Figure 12 is an exploded view of the basic components of the two-way testing module.
  • Figure 15 is an exploded view of the basic components of the protected two-way testing module.
  • the modular terminal block system of the present invention is illustrated. As shown, in a preferred embodiment of the present invention a number of individual terminal blocks is employed, which number may vary from 1 to 25 or more with the specific application. One of the terminal blocks is shown as removed from the mounting rail.
  • Each terminal block 10 of the modular system of the present invention employs a separate terminal block housing 12.
  • the service side of the terminal block is illustrated and has service wire pair openings 14 along a front surface thereof.
  • the wire pair openings 14 provide service wires access into an internal chamber within the housing 12.
  • Housing 12 is composed of a dielectric material, suitable for manufacture in the desired shape. For example, any one of several commercially available thermoplastic resins may be readily employed due to their relatively low cost and ease of manufacture. Other dielectric materials may be also employed, however.
  • the earth connector guide 22 supports an earth connector 18 which connects to the mounting rail 24 in a manner as illustrated in Figures 9 and 10.
  • the terminal block is mounted on a standard DIN mounting rail 24 modified to include the rail earth connector 26 which is tied to "earth" by connecting the conducting mounting rail 24 to earth upon installation.
  • the mounting rail 24 may be manufactured from steel or aluminum or any other suitably conductive material.
  • Earth connector 18, supported by the earth connector guide 22, provides the conductive connection to the rail earth connector 26.
  • Figure 9 illustrates a perspective view of the detail of the earth connector guide 22 and the earth connector 18 before connecting to the mounting rail 24 at the rail earth connector 26.
  • Figure 10 illustrates a bottom view showing the earth connector guide 22 and earth connector 18 connected to the mounting rail 24 at the rail earth connector 26.
  • the terminal block 10 is secured to the mounting rail by front lip 28, located proximate the service side of the terminal block, rear clip 30, located proximate the exchange side of the terminal block, and earth connector guide 22.
  • Front lip 28 has an inner ledge which secures the front of the terminal block by capturing the mounting rail between itself and the bottom structure of the terminal block.
  • Rear clip 30 provides an inner ledge which secures the rear of the terminal block to the mounting rail 24.
  • Terminal block earth connector guide 22 (as illustrated in Figure 9) and rail earth connector 26 guide the terminal block onto the mounting rail 24.
  • the terminal block is secured to the mounting rail by first securing the front clip 28 to the mounting rail.
  • the mounting may include only the front lip 28 and the rear clip 30, in those applications where an earth connection is not required.
  • alternate mounting apparatus are contemplated instead of the clip and lip combination such as fastening the terminal block to the mounting rail using a clipping mechanism at both ends of the terminal block; fastening the terminal block by reversing the locations of the clip and the lip at the ends of the terminal block; or, fastening the terminal block to the mounting rail using an industrial hook and eye fastener such as VELCRO (Trade mark).
  • any number of terminal blocks may be ganged together along a mounting rail to provide access to additional service wires from a splice cable secured to an exchange distribution cable, as required.
  • a single terminal block would be provided for each exchange wire pair and service wire pair.
  • a single mounting rail may be used or multiple mounting rails may be used.
  • the terminal blocks may be snapped into place along the mounting rail 24 or removed to alter the number of terminal blocks as needed.
  • the exchange side wires of the terminal block and the service side wires of the terminal block may be repeatedly connected and disconnected.
  • a single service wire opening instead of a pair of openings 12 may be employed for each terminal block, or additional service wire openings could be provided into each terminal block if a need arose in a specific application. Accordingly, the configuration of service wire openings and their configuration on the mounting rail 24 is an illustrative preferred embodiment only and may be varied with the specific application as needed.
  • each housing 12 includes a terminal actuator 32.
  • the remainder of the actuator 32 extends through the housing 12 into the service side internal chamber.
  • Terminal actuator 32 is preferably made of a dielectric material which may be the same as housing 12.
  • the top of the terminal actuator 32 preferably has a shape which may be readily engaged and turned by a hand held screw driver, wrench or other implement.
  • actuator 32 may be adapted to be grasped and turned by a user of the terminal block. Turning the actuator a fixed amount, preferably indicated by visual markings on the housing and actuator, effects the connection of the service wires to the exchange wires in a manner to be discussed in more detail below.
  • the terminal block 10 of the present invention employs a terminal block housing 12 having exchange wire pair openings 36 along a rear surface thereof.
  • the exchange wire pair openings 36 provide exchange wires with access into an internal chamber within housing 12.
  • exchange wire openings instead of a pair of openings 36 may be employed for each terminal block, or additional exchange wire openings could be provided into each terminal block if a need arose in a specific application. Accordingly, the configuration of exchange wire openings and their configuration on the mounting rail 24 is an illustrative preferred embodiment only and may be varied with the specific application as needed.
  • the terminal block 10 includes a linking module 16 which has a cap 42 with two "tee-in" test ports 44 (as shown in Figure 1).
  • the linking module 16 provides the connection between the service side and the exchange side of the terminal block and may be embodied in a number of configurations.
  • the linking module includes a basic configuration referred to herein as a bridge module having contacts (shown in Figure 4) which provide a connection between the service side wires and exchange side wires.
  • An alternate embodiment of the linking module referred to herein as a protector module, protects the service and exchange wires from voltage spikes. Both the bridge module and the protector module provide test ports 44 to allow testing of the service and exchange sides without opening the terminal block or disconnecting the service or exchange side wires.
  • FIG. 3 an exploded view of the basic components of a terminal block housing including the exchange side wire carrier and the service side wire carrier of the present invention is illustrated.
  • the terminal block of the present invention includes a path for each of two wire connections between the exchange side and the service side. To simplify the description, and to avoid unnecessarily cluttering the drawings, only those components defining a single conductive path through the terminal block are described, although the detailed description applies equally to both conductive paths.
  • the exchange wire carrier 20 includes an exchange wire conduit 92 which carries the exchange wire after the exchange wire has been inserted into one of the exchange wire pair openings 36 (as illustrated in Figure 2).
  • the exchange wire carrier 20 includes a contact blade receiving slot 94, for receiving the exchange wire contact blade (as described below) and earth connector receiving slot 98 which terminates at the earth connector guide 22 and which receives the earth connector (not shown).
  • Each wire receiving opening 56 extends through a flanged extension 60 of the service wire carrier 50 into the central portion of the carrier 50.
  • a first contact blade receiving slot 62 is provided in the carrier at a first position along opening 56 and a second contact blade receiving slot 64 is provided at a second position along opening 56.
  • the first and second contact blade receiving slots 62, 64 respectively, receive first and second insulation cutting contact blades 66, 68.
  • the service wire carrier 50, including the first and second insulation cutting contact blades 66, 68 is retained within the terminal block housing insert 70.
  • Housing insert 70 includes first and second contact blade retaining slots 72, 74, respectively, for each set of contact blades.
  • the first and second contact blade retaining slots receive first and second insulation cutting contact blades 66, 68.
  • Housing insert 70 also retains the service wire junction contact 76.
  • Each service wire junction contact 76 is integrally formed with the first and second insulation cutting contact blades 66, 68. Therefore, when either of the insulation cutting contact blades 66, 68 is in conductive communication with a service wire, it is also in conductive communication with the corresponding service wire junction contact 76.
  • the housing insert 70 retains the exchange wire junction contact 80 and earth junction contact 84 in addition to junction contact 76. These junction contacts are inserted into the base of the five-prong access jack 120 when the housing insert is placed into the housing 12. More particularly, the service wire junction contact 76 is retained within service wire junction contact slot 122 and the exchange wire junction contact 80 is retained within the exchange wire junction contact slot 124. Earth junction contact 84 is retained within the centrally situated earth junction contact slot 130.
  • the exchange wire carrier 20 is inserted into a space formed between the housing 12 and the housing insert 70 into the housing 12.
  • the exchange wire contact blade receiving slot 94 receives the exchange wire insulation cutting contact blade 170.
  • the insulation cutting contact blade 170 is integrally formed with the exchange wire junction contact 80 and of a metallic conductor to provide good electrical contact from the junction contact 80 to the exchange wire when the insulation cutting contact blade 170 pierces the insulation thereof during termination as described below.
  • the terminal block of the present invention includes a bridge module 40 embodiment of the linking module.
  • the bridge module 40 includes a path for each of two wire connections between the exchange side and the service side. To simplify the description, and to avoid unnecessarily cluttering the drawings, only those components defining a single conductive path through the bridge module are described, although the detailed description applies equally to both conductive paths.
  • the bridge module 40 includes a set of integrally formed bridge contacts 110.
  • Each set of bridge contacts 110 includes a service wire junction contact 114 and an exchange wire junction contact 116.
  • the contacts are maintained within the bridge module with a hard encapsulant such as a non-conductive epoxy, the top surface of which is illustrated as encapsulant 38.
  • the hard encapsulant only occupies a portion of the interior of the bridge module 40.
  • the remainder of the interior of the bridge module 40 comprising approximately the top third of the interior of the bridge module 40, is filled with an insulating gel. Therefore a test probe may be inserted into tee-in test port 44 to make conductive contact with the set of bridge contacts 110.
  • Figure 4 also illustrates the gasket 118 which is used to provide a seal between the selected linking module and the five-prong access jack 120 of the housing 12.
  • the gasket is constructed of an elastic material known in the art and capable of serving as an environmental barrier between the five-prong access jack 120 and the external environment. The gasket provides a seal such that once the linking module is snapped into place over the five-prong access jack 120, no environmental contaminants or moisture may enter the junction contact area.
  • FIG. 5 shows a broken away view showing an interior of the terminal block of the present invention illustrating the exchange side wire carrier position before terminating an exchange wire.
  • an internal exchange side chamber 160 is preferably formed with the bottom and rear of housing insert 70, sides and rear of housing 12 and top of exchange wire carrier 20.
  • the exchange wire carrier 20 is retained in place within the chamber through the combined action of the exchange wire carrier retaining stub 176 (as shown in Figure 3) in correspondence with first or second exchange wire carrier retaining slots 178, 180.
  • the exchange wire carrier 20 may be moved into an open or closed position by exchange wire carrier actuator slot 164 which is integrally formed with the exchange wire carrier 20.
  • the actuator slot 164 may be manipulated by a simple tool such as a screwdriver to push the exchange wire carrier away from the roof of the housing 12 into the open position, as shown in Figure 5, thus opening the exchange wire chamber 160.
  • a simple tool such as a screwdriver to push the exchange wire carrier away from the roof of the housing 12 into the open position, as shown in Figure 5, thus opening the exchange wire chamber 160.
  • the exchange wire carrier In the open position the exchange wire carrier is retained by the exchange wire carrier retaining stub 176 and exchange wire carrier retaining slot 178.
  • the exchange wire 162 may enter the exchange wire opening 36 in the housing 12 and travel into the exchange wire receiving opening 166 in the exchange wire carrier 20 and finally into the exchange wire receiving opening 168 of the housing insert 70 until seated at the base of the opening.
  • both exchange side wires are inserted into the exchange side wire carrier before the terminal block is snapped into place on the mounting rail.
  • Figure 6 shows a broken away view of the interior of the terminal block of the present invention, illustrating the exchange side wire carrier position after terminating an exchange wire.
  • Figure 8 shows a second view which is a cross-section of the exchange side wire carrier after terminating an exchange wire taken along line 8-8 of Figure 6.
  • the exchange wire may be terminated, as illustrated, when the terminal block 10 is snapped into place onto the mounting rail 24. Installing the terminal block 10 onto the mounting rail forces the exchange wire carrier 20 upwards, into the closed position. In pushing the exchange wire carrier upwards, the exchange wire carrier retaining stub 176 is forced out of exchange wire carrier retaining slot 178 and into exchange wire carrier retaining slot 180.
  • the exchange wire may also be terminated by pushing the exchange wire carrier into the closed position manually and then installing the terminal block onto the mounting rail.
  • the exchange wire In closing the exchange wire carrier, the exchange wire is put in conductive communication with the exchange wire junction contact 80 as follows.
  • the exchange wire 162 is seated in the exchange wire conduit 92.
  • the exchange wire insulation cutting contact blade 170 is forced into the exchange wire 162 while traveling into the exchange wire contact blade receiving slot 94.
  • the insulation cutting contact blade 170 cuts through the exchange wire insulation and makes contact with the metallic conductor of the wire.
  • the exchange wire junction contact 80 is simultaneously put in conductive communication with the exchange wire because it is in conductive communication with the insulation cutting contact blade 170.
  • Figures 5, 6 and 7 illustrate installation of a service wire on the service side.
  • a broken away view showing an interior of the terminal block of the present invention illustrates the service side wire carrier position before terminating a service wire.
  • an internal service side chamber 150 is preferably integrally formed with the tops and sides of housing 12 and the top of housing insert 70.
  • the service wire carrier 50 is opened by turning the terminal actuator 32 until the service wire carrier 50 has been fully retracted towards the roof of the housing 12. Once the service wire carrier 50 has been retracted into the open position, the service side wire 152 may enter the perforated seal 58 and travel into the service wire receiving opening 56 until seated at the base of the opening. In practice both service side wires are inserted into the service side wire carrier before terminal actuator 32 is used to terminate the wires.
  • Figure 6 illustrates the service side wire carrier position after terminating a service wire
  • Figure 7 shows a second view which is a cross-section of the terminal actuator and the service side wire carrier after terminating a service wire taken along line 7-7 of Figure 6.
  • the first and second contact blade receiving slots 62, 64 respectively, receive first and second insulation cutting contact blades 66, 68, when the service wire carrier 50 is in the closed position.
  • the first and second insulation cutting contact blades 66, 68 are each integrally formed with a service wire junction contact 76 and are formed of a metallic conductor to provide good electrical contact from the service wire junction contact 76 to the service wire when blades 66, 68 pierce the insulation thereof. Therefore, once an insulation cutting contact blade is in conductive communication with a service wire, it is also in conductive communication with the corresponding service wire junction contact 76.
  • Which of the two blades 66, 68 makes electrical contact to the wires is determined by the diameter of the wire. That is, whether the wire is inserted to the first slot 62 or second slot 64 will depend on the wire diameter. For example, as illustrated in Figure 6, a large gauge wire will only proceed along opening 56 far enough to reach slot 62 and will thus make electrical contact with blade 66. A smaller gauge wire in turn will reach to second slot 64 and make contact with the second, longer blade 68.
  • the top portion of housing 12 over the chamber 150 is provided with an annular groove 154 around opening 34.
  • the top end of terminal actuator 32 is provided with a matching annular flange 156 which fits within the annular groove 154. This thus prevents vertical motion of the terminal actuator 32 during rotation thereof, in contrast to prior art actuator type connectors which screw down into a receptacle to make contact with a service wire.
  • the exchange wire is conductively connected to exchange wire junction contact 80 at exchange wire junction contact slot 124 in the five-prong access jack 120.
  • the service wire is conductively connected to service wire junction contact 76 at service wire junction contact slot 122 in the five-prong access jack 120.
  • the earth connector 18 is conductively connected to the earth junction contact 84 at earth junction contact slot 130.
  • the bridge module 40 In order to conductively connect the service side to the exchange side using the bridge module 40, the bridge module 40 is plugged into the five-prong access jack 120. The set of bridge contacts 110 complete the conductive loop between the exchange side and the service side. Once connected, the tee-in test port 44 (as shown in Figure 2) may be used to perform diagnostic testing with which to examine the signal provided by the connection.
  • the bridge module may be removed and replaced with a protector module 140 as illustrated in Figure 11.
  • the protector module 140 performs the same function as bridge module 40, in terms of connecting the service and exchange sides when plugged into the five-prong access jack 120, but also includes a gas discharge tube 142 and an earth junction contact 144.
  • the gas discharge tube 142 has three conductive rings, one ring 146 encircling the circumference of each of the ends of the tube and a third ring 148 encircling the middle of the tube.
  • Each of the rings is soldered or conductively secured to a contact. Therefore, each set of contacts 110 are conductively connected to the end rings, respectively, and the earth junction contact 144 is conductively connected to the middle ring.
  • the gas discharge tube 142 and earth junction contact connection 144 perform in conjunction with contacts 110 to shunt voltage to earth in the event there are voltage spikes on the conductive path, for example. Therefore, once the protector module is plugged into the five-prong access jack 120, the two primary conductive paths between the exchange side and the service side are protected from intermittent destructive voltage levels.
  • the use and operation of the gas discharge tube and its application in protecting signal lines in this manner are well known in the art.
  • the contacts 110 and the gas discharge tube 142 within the protector module 140 are maintained within the protector module with a hard encapsulant such as a non-conductive epoxy.
  • the hard encapsulant only occupies a portion of the interior of the protector module 140, as used in the bridge module.
  • the remaining top third of the interior of the protector module 140 is filled with an insulating media. Therefore a test probe may be inserted into tee-in test port 44 to make conductive contact with the set of contacts 110 to perform diagnostic tests on the connection.
  • the bridge module 40 and the protector module 140 may be used interchangeably with the housing 12, and the five-prong access jack 120, depending on the application desired by the user.
  • the bridge module may be removed and replaced with a two-way testing module 200 as illustrated in Figure 12.
  • the two-way testing module performs the same function as the bridge module 40, in terms of connecting the service and exchange sides when plugged into the five-prong access jack 120, but includes a configuration of the contacts which permits testing either the exchange side or the service side without disconnecting the exchange side or service side wires.
  • the two-way testing module also includes a protected embodiment which is further described below.
  • the two-way testing module 200 includes a path for each of two wire connections between the exchange side and the service side. To simplify the description, and to avoid unnecessarily cluttering the drawings, only those components defining a single conductive path through the two-way testing module are described, although the detailed description applies equally to both conductive paths.
  • Each set of test contacts includes a service wire test contact 214 and an exchange wire test contact 216.
  • Each contact is formed of a metallic, conductive material similar to that of the bayonet contact 210.
  • Each contact has a plurality of bends. One set of bends create an area 218 into which a twin gas discharge tube may be inserted for a protected embodiment of the two-way testing module (described further below).
  • a second set of bends 220 are provided in correspondence with a slot 222 in each contact which permits the insertion of the bayonet contact 210 simultaneously into the service wire test contact 214 and the exchange wire test contact 216.
  • Figure 13 is a broken away view showing an interior of a two-way testing module.
  • Figure 14 shows a cut-away view taken along line 14-14 of Figure 13 showing a cross-section of the two-way testing module 200.
  • the contacts are maintained within the two-way testing module 200 with a hard encapsulant such as a non-conductive epoxy, the top surface of which is illustrated as encapsulant 230.
  • the hard encapsulant occupies a portion of the interior of the two-way testing module 200.
  • the remainder of the interior of the two-way testing module 200 is sealed by gasket 232. The gasket is secured to the top edge of the housing 202.
  • the gasket 232 When the cover 204 is closed, the gasket 232 provides a seal between the cover 204 and the housing 202 such that an environmental seal is formed which protects the contents of the two-way testing module from the environment. More particularly, the gasket 232 provides an environmental shield which protects the junction between the service wire test contact 214, the exchange wire test contact 216 and the bayonet contact 210. Therefore the connection between the service side and the exchange side, formed when the cover is closed and the bayonet contact is inserted into the slot 222 provided in the service wire test contact 214 and the exchange wire test contact 216, is protected from the environment by the gasket.
  • the interstitial space between the encapsulant and the gasket is filled with an insulating media which further protects the junction from the environment.
  • the cover may be provided with a tee-in test port 44. Therefore, a test probe may be inserted into the tee-in test port 44 to make conductive contact with the service and exchange sides once they are connected by the bayonet contact, without opening the two-way testing module cover.
  • the gas discharge tube 142 has three conductive rings, one ring 146 encircling the circumference of each of the ends of the tube and a third ring 148 encircling the middle of the tube. Each of the rings is soldered or conductively secured to a contact. Therefore, in one embodiment, the exchange wire test contacts 216 are conductively connected to the end rings, respectively, and the earth junction contact 144 is conductively connected to the middle ring 148. In the alternative, the service wire test contacts 214 are conductively connected to the end rings, respectively, and the earth junction contact 144 is conductively connected to the middle ring.
  • a suitable insulating medium is injected into chambers 150 and 160 and above the hard encapsulant within the bridge module 40 and the protector module 140 so as to fill all the voids and the wire openings in the terminal block.
  • the voids in the two-way testing module 200 or the protected two-way testing module 240 may also be filled in a similar manner. Any one of a large number of well known commercially available greases, gels and other insulating mediums may be employed, depending on the specific requirements of the application.
  • the viscosity and adhesive qualities of the medium should be such that wires may be inserted to and removed from openings 56, 166 and 44 without adhering excessively to the medium.
  • the medium should be sufficiently flowable so as to flow around the exchange wire carrier 20 and the service wire carrier 50 as they move therethrough.
  • the medium may be injected into the chamber 150 through terminal actuator 32 through a central bore therein. This central bore in terminal actuator 32 is then secured with a plug 54 to ensure the medium 28 remains within the chamber once the chamber is filled.
  • perforated seal 58 also helps prevent the medium from flowing out through the service wire receiving openings 56.
  • the medium is also injected into test port 44 in order to fill the bridge module 40 and the protector module 140 and into chamber 160 through exchange wire receiving opening 166.
  • the medium is also injected through the gasket 232 to fill the two-way testing module 200 and the protected two-way testing module 240. Injection of the medium may be performed after assembly of the terminal block. Also, the medium may be pumped in after being precured outside of the block in the case of a curable medium such as a gel, or may be injected in an uncured state and subsequently allowed to cure.
  • a curable medium such as a gel
  • the exchange wires desired to be connected to the terminal block are inserted into openings 166 with the exchange wire carrier 20 configured in a first open position illustrated in Figure 5.
  • the wires may be readily inserted into the interior of exchange carrier 20 displacing only a very moderate amount of insulating medium.
  • the diameter of the wire blocks the opening 166 preventing outflow of the insulating medium therethrough.
  • the medium is also preserved within chamber 150 when connecting and disconnecting service wires in the field.
  • the service wires desired to be connected to the terminal block are inserted into openings 56 through perforated seal 58 with the service wire carrier 50 configured in a first position illustrated in Figure 5. In this position, the wires may be readily inserted into the interior of carrier 50 displacing only a very moderate amount of insulating medium.
  • the flanged extension 60 with perforated seal 58 of carrier 50 blocks the portion of wire access slots 14 below the openings 56 preventing outflow of the insulating medium therethrough.
  • terminal actuator 32 which in turn drives the service wire carrier 50 downward due to the threaded engagement of actuator 32 and the carrier member. The medium is prevented from exiting through the center portion of the actuator by plug 54.
  • Actuator 32 is rotated until the carrier 50 is driven down to the second position illustrated in Figure 6. In this position, the wires have been forced into contact with insulation cutting blades 64, 66. Insulation cutting blades 64, 66 slice through the insulation on the service wire providing good electrical contact to the inner conductive core of the wire.
  • the insulating medium inside chamber 150 will flow around the sides of service wire carrier 50 so as to be displaced from the bottom to the top portion of the chamber 150.
  • vertical channels may be provided on service wire carrier 50 to facilitate the flow of the insulating medium around the carrier member as it is driven from the first to second position by rotation of actuator 32.
  • the terminal block may be removed from the mounting rail and the exchange side wires removed and replaced as required while maintaining the insulating medium within the terminal block.
  • the exchange side wires may be removed and/or replaced.
  • downward force is applied to the exchange wire carrier 20 by inserting a flat-headed tool such as a screwdriver, into the exchange wire carrier actuator slot 164.
  • the downward pressure forces the exchange wire carrier 20 into the open position and frees the exchange wires from the exchange wire insulation cutting contact blades 170.
  • the exchange wires may be removed from the terminal block.
  • new exchange wires may be inserted into the exchange wire carrier for installation if required.
  • the terminal block may be repeatedly used in the same or a different installation, providing maximum flexibility.
  • the service side wires may be removed by reversing the terminal actuator movement. Reversing the rotation of the terminal actuator forces the service wire carrier upward, disengaging the service wires from the first and second insulation cutting contact blades 64, 66. Once disengaged the wire may be pulled out of the terminal block housing. In this manner service wires may be terminated, removed and replaced in the same terminal block, as required.
  • the terminal block of the present invention provides significantly improved environmental protection and allows the multiple connection and disconnection of exchange wires and service wires to the terminal block without significant loss of insulating medium and concomitant loss of environmental protection capability. Furthermore, the present invention provides a terminal block which is simple to use and which is simple mechanically and not prone to failure even after repeated connections and disconnections. In addition, the terminal block provides a bridge module or protector module for conveniently and safely connecting the exchange and service sides, as well as a five-prong access jack for use by additional modules as desired.
  • FIG. 3 and 4 an exploded side view of the present invention is illustrated which illustrates the ease of manufacture of the present invention. As illustrated, each of the components of the terminal block within housing 12 is moved into position and captured by the housing insert 70 and the housing 12.
  • the present invention in addition to providing the features described above, may also be manufactured in a cost effective manner, readily compatible with existing manufacturing technologies.
  • terminal block of the present invention may be modified in a wide variety of ways while still remaining within the scope of the present invention.
  • the specific configurations of the housing, housing insert, exchange wire carrier, earth connection on the mounting rail, and service wire carrier may all be varied due to specific manufacturing considerations or other reasons without departing from the scope of the present invention.
  • the present invention has been described as a terminal block adapted for use with insulated exchange and service side wires, the present invention may equally well be employed with bare exchange or service wires. Additional variations and modifications of the preferred embodiment described above may also be made as will be appreciated by those skilled in the art and accordingly the above description of the present invention is only illustrative in nature.

Claims (9)

  1. Bloc terminal modulaire (10) adapté pour être monté de façon amovible sur un élément de montage (24), comprenant:
    un boítier (12) possédant une prise d'accès (120);
    des moyens pour réaliser la terminaison d'un fil de service (152) dans ledit boítier (12), lesdits moyens de terminaison des fils de service comprenant un élément de contact (66, 68) du fil de service, accessible par l'intermédiaire de ladite prise d'accès (120);
    des moyens de montage (28, 30) pour monter de façon amovible le bloc terminal (10) sur l'élément de montage (24);
    des moyens de terminaison de fil d'échange incluant un élément de contact (170) du fil d'échange, accessible par l'intermédiaire de ladite prise d'accès (120); et
    des moyens (16) adaptés pour être accouplés à ladite prise d'accès (120) pour relier ledit élément de contact (66, 68) du fil de service et ledit élément de contact (170) du fil d'échange de telle sorte qu'un trajet électriquement conducteur est formé entre eux;
       caractérisé par
       des moyens (162) de terminaison d'un fil d'échange en réponse à l'activation dudit rail de montage (24) lorsque le bloc terminal modulaire est encliqueté en position sur le rail de guidage (24).
  2. Bloc terminal selon la revendication 1, dans lequel lesdits moyens de liaison (16) comprennent une ouverture (44) pour un fil de test, permettant l'accès au trajet électriquement conducteur formé entre le fil de service (152) et le fil d'échange (162).
  3. Bloc terminal selon la revendication 1, dans lequel lesdits moyens de liaison (16) incluent un module (40) incluant un ensemble de contacts formé d'un seul tenant (110), qui inclut un contact (114) de jonction avec le fil de service et un contact (116) de jonction avec le fil d'échange de telle sorte que, lorsque ledit module (40) est enfiché dans ledit jack d'accès (120), un trajet conducteur est formé entre le fil de service (152) et le fil d'échange (162) par l'intermédiaire desdits contacts (110) formés d'un seul tenant.
  4. Bloc terminal selon la revendication 3, dans lequel ledit rail de montage (24) est connecté électriquement à la masse, et lesdits moyens de liaison (16) comprennent en outre:
    un tube de décharge de gaz (142) possédant une première extrémité connectée électriquement audit ensemble de contacts (110) formé d'un seul tenant et une seconde extrémité connectée électriquement à un contact (84) de jonction à la masse pour établir une connexion avec la masse; et
    des moyens (18) pour créer une connexion conductrice entre chaque contact (84) de jonction avec la masse et ledit rail de montage (24) connecté électriquement à la masse de telle sorte que lorsqu'une tension excessive apparaít sur ledit ensemble de contact (110) formé d'un seul tenant, la tension excessive est shunté par ledit tube de décharge de gaz (142) à la masse.
  5. Bloc terminal selon la revendication 1, dans lequel lesdits moyens de terminaison de fil d'échange comprennent:
    un support de fil d'échange (20) comportant un conduit (92) pour un fil d'échange, traversant ce support; et
    une fente (94) formée dans ledit support en forme de fil (20), qui s'étend en travers dudit conduit (92), dans lequel ledit élément de contact (170) du fil d'échange est un élément métallique configuré dans ladite prise d'accès (120), une partie s'étendant dans ledit support (20) du fil d'échange comportant une lame de coupe (170) d'isolant fendu, qui s'étend en direction de ladite fente (94) dans ledit conduit (92).
  6. Bloc terminal selon la revendication 5, dans lequel lesdits moyens de terminaison du fil d'échange peuvent être actionnés par le rail de montage (24) pour venir dans une position fermée lorsque le bloc terminal (10) est installé sur le rail de montage (24).
  7. Bloc terminal selon la revendication 1, dans lequel lesdits moyens de montage comprennent:
    une lèvre avant (28) située à proximité desdits moyens de terminaison du fil de service et qui fixe une face avant du bloc terminal (10) audit rail de montage (24); et
    une pince arrière (30) située à proximité desdits moyens de terminaison du fil d'échange et qui fixe un côté arrière du bloc terminal (10) audit rail de montage (24), lesdits moyens de terminaison du fil d'échange étant actionnés pour venir dans la position fermée lorsque le côté arrière du bloc terminal (10) est installé sur ledit rail de montage (21).
  8. Bloc terminal selon la revendication 7, dans lequel lesdits moyens de montage comprennent en outre:
    un guide de connecteur de masse (22) formé d'un seul tenant avec ledit support (20) du fil d'échange;
    un connecteur de masse (18) disposé dans ledit guide (22) du connecteur de masse et formé d'un seul tenant avec un contact de jonction à la masse, qui est disposé dans ladite prise d'accès (120);
    un rail de montage (24) connecté à la masse et possédant une fente (26) pour recevoir des guides (22) du connecteur de masse, ledit conducteur de masse (18) étant guidé par ledit guide (22) du connecteur de masse dans ladite fente (26) du rail de montage et étant connecté à la masse lorsque le côté arrière du bloc terminal (10) est installé sur ledit rail de montage (24).
  9. Bloc terminal selon la revendication 8, dans lequel lesdits moyens de terminaison d'un fil de service (152) incluent une première zone (150), dans laquelle lesdits moyens de terminaison d'un fil d'échange (169) incluent une seconde chambre (160), et dans lequel lesdits moyens (16) de liaison incluent une troisième chambre (38; 230), et dans lequel lesdits première, seconde et troisième chambres (150, 160, 38; 230) sont remplies par un milieu fluide électriquement isolant.
EP95901007A 1994-10-21 1994-10-21 Bloc terminal de telecommunication modulaire Expired - Lifetime EP0787372B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20020006456 EP1248319A1 (fr) 1994-10-21 1994-10-21 Bornier modulaire de telecommunication
ES95901007T ES2183861T3 (es) 1994-10-21 1994-10-21 Bloque terminal de telecomunicaciones modular.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1994/011908 WO1996013077A1 (fr) 1994-10-21 1994-10-21 Bloc terminal de telecommunication modulaire

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP20020006456 Division EP1248319A1 (fr) 1994-10-21 1994-10-21 Bornier modulaire de telecommunication

Publications (3)

Publication Number Publication Date
EP0787372A1 EP0787372A1 (fr) 1997-08-06
EP0787372A4 EP0787372A4 (fr) 1998-12-23
EP0787372B1 true EP0787372B1 (fr) 2002-09-18

Family

ID=22243155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95901007A Expired - Lifetime EP0787372B1 (fr) 1994-10-21 1994-10-21 Bloc terminal de telecommunication modulaire

Country Status (10)

Country Link
EP (1) EP0787372B1 (fr)
KR (1) KR100331579B1 (fr)
AT (1) ATE224588T1 (fr)
AU (2) AU1040295A (fr)
CA (1) CA2202658C (fr)
DE (1) DE69431409T2 (fr)
IL (1) IL115702A (fr)
MY (1) MY113297A (fr)
TW (1) TW274641B (fr)
WO (2) WO1996013077A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100876583B1 (ko) 2007-02-01 2008-12-31 이원재 터미널 블록
US20130130571A1 (en) * 2011-11-18 2013-05-23 Colin Hamer Low-profile connection system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129630B (en) * 1982-11-04 1986-03-05 Egerton A C Ltd Terminal block
US5149278A (en) * 1991-02-22 1992-09-22 Psi Telecommunications, Inc. Terminal block
US5069637A (en) * 1991-06-14 1991-12-03 Jacobson Mfg. Co., Inc. Insulation displacing electrical connector
US5296646A (en) * 1992-04-03 1994-03-22 The Whitaker Corporation Protector module for telephone line junction box
GB9302586D0 (en) * 1993-02-10 1993-03-24 Egerton A C Ltd Transmission line connectors and assemblies thereof

Also Published As

Publication number Publication date
EP0787372A4 (fr) 1998-12-23
AU1040295A (en) 1996-05-15
DE69431409D1 (de) 2002-10-24
AU3859195A (en) 1996-05-15
IL115702A0 (en) 1996-01-19
ATE224588T1 (de) 2002-10-15
CA2202658C (fr) 2006-06-06
CA2202658A1 (fr) 1996-05-02
DE69431409T2 (de) 2003-04-17
TW274641B (en) 1996-04-21
KR100331579B1 (ko) 2002-10-04
MY113297A (en) 2002-01-31
IL115702A (en) 2000-07-16
WO1996013089A1 (fr) 1996-05-02
EP0787372A1 (fr) 1997-08-06
WO1996013077A1 (fr) 1996-05-02

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