CA1295703C - Cable arrangement for use in a multiplex transmission system - Google Patents
Cable arrangement for use in a multiplex transmission systemInfo
- Publication number
- CA1295703C CA1295703C CA000561768A CA561768A CA1295703C CA 1295703 C CA1295703 C CA 1295703C CA 000561768 A CA000561768 A CA 000561768A CA 561768 A CA561768 A CA 561768A CA 1295703 C CA1295703 C CA 1295703C
- Authority
- CA
- Canada
- Prior art keywords
- conductors
- power
- cable
- pair
- multiplex transmission
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/003—Power cables including electrical control or communication wires
-
- 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
Landscapes
- Multi-Conductor Connections (AREA)
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
- Insulated Conductors (AREA)
- Communication Cables (AREA)
Abstract
Abstract:
A cable unit comprises a pair of power supply conductors of an elongated strip shape extending parallel to each other. The conductors are as close as possible to each other, although with sufficient distance to assure the necessary withstand voltage. A pair of signal conductors are disposed on one side of the power conductors at positions corresponding to the center between the two power supply conductors and extend parallel to the power supply conductors. The respective conductors are covered with suitable insulation layers.
A cable unit comprises a pair of power supply conductors of an elongated strip shape extending parallel to each other. The conductors are as close as possible to each other, although with sufficient distance to assure the necessary withstand voltage. A pair of signal conductors are disposed on one side of the power conductors at positions corresponding to the center between the two power supply conductors and extend parallel to the power supply conductors. The respective conductors are covered with suitable insulation layers.
Description
~s~o~
Cable arrangement or use in a multlplex transmission system The present invention relates to a cable arrangement in which a pair of power conductors for transmitting power and a pair of signal conductors for transmitting various signals are integrally formed in one cable structure.
To enable the prior art to be described with the aid of a diagram, the figures of the drawings will first be listed.
Fig. 1 is a circuit diagram showing an example of 10 multiplex transmission terminal;
Fig. 2 is a perspective view of an example of a wire connection in a conventional multiplex transmission terminal;
Fig. 3 is a perspective view showing an example of a 15 multiplex transmission cable according to an embodiment of the present invention;
Fig. 4 is a perspective view showing a specific feature of the use of a multiplex transmission cable according to the present invention;
Fig. 5 is a front view of the terminal shown in Fig. 4 with the casing halves opened, and Fig. 6 is a perspective view of a terminal attached to a multiplex transmission cable according to the present ' .
invention.
Fig. 1 shows an example of multiplex transmission system. In Fig. 1, lOl and 102 denote power transmission lines for supplying power to terminals 105 and 106. 103 and 104 denote data transmission lines for transmitting data information to the terminals 105 and 106. In the example shown, the respective terminals 105 and 106 are provided with actuators 107 and 108, such as an electric motor and a display lamp, which are activated by the data, in addition to various switches lO9 and 110 for inputting the data.
In the prior art, the power lines 101 and 102 and the data transmission lines 103 and 104 are connected to the respective terminals 105 and 106 by means of one or more separate conventional connecting wires or twisted pair wires, using external connectors 121 and 122, as shown in Fig. 2. In Fig. 2, the connecting lines shown generally by the arrow A are the lines to be connected to a front stage terminal and the lines shown generally by the arrow B are the lines to be connected to a back stage terminal.
However, in the prior art, since the respective lines are connected to the multiplex transmission terminal through one or more external connectors 121 and 122, in order to connect each line with the terminal 7 it is necessary to provide a cable of a suitable length corres-ponding to the position of the multiplex transmission terminal, having a suitable connector tip attached to the ends of the conductors of the cable.
Moreover, since the respective lines lOl and 102 are laid independently, it is necessary to consider the cable lay out to prevent noise caused by the power lines from being induced on the signal lines.
An essential ob~ect of the present invention is to provide a multiplex transmission cable arrangement that is capable of eliminating these problems.
9d5~
Another object oE the present invention is to provide a mu]tiplex transmission cable arrangement that is easy to connect to one or more multiplex transmission terminals.
A further object of the present invention is to 5 provide a multiple transmission cable arrangement that can avoid interference from the power lines.
To this end, the invention consists of a cable arrange-ment comprising a pair of power conductors which are electrically separated but closely adjacent each other; a 10 pair of signal conductors disposed to one side of said power conductors with the centers of the respective signal conductors positioned substantially at a level between said power conductors while extending parallel to the power conductors; and insulation layers for insulating 15 said power conductors and signal conductors, respectively.
Referring to Fig. 3, there is shown a multiplex trans-mission cable unit 10 comprising a pair of power supply conductors 1 and 2 of elongated strip shape extending parallel to each other. The two conductors 1 and 2 are 20 located as close as possible to each other, while maintaining the necessary distance for assuring the required withstand voltage. Disposing the conductors 1 and 2 close to each other increases the capacitance between them, whereby to provide a low impedance power 25 supply line. A pair of signal conductors 3 and 4 are disposed on one side of the conductors 1 and 2, at a level corresponding to the center between the conductors 1 and 2 and extending parallel to and alongside the conductors 1 and 2. The respective distances between the conductor 3 30 and the conductors 1 and 2 are equal to prevent electro-static induction from the conductors 1 and 2. The respective distances between the conductor 4 and the conductors 1 and 2 are also equal.
The conductors 1 to 4 are covered with an insulation :~.2~5703 _ 4 material 11 (referred to as insulation layer hereinafter), as shown in Fig. 3. Although the conductors 1 to 4 are covered with the insulation layer 11 throughout the whole length of the conductors, a multiplex transmission terminal can be connected to the conductors 1 to 4 anywhere along the cable, as desired. Grooves 12 and 13 are formed on the surface of the insulation layer 11, corresponding to interface portions between the power conductors 1 or 2 and the signal conductor 3, and between the two signal conductors 3 and 4.
Referring to Figs. 4, 5 and 6, a terminal casing 30 of a multiplex transmission terminal is composed of a top half 30a and a bottom half 30b made of a resin material and connected by one or more hinges 19, so that the halves 30a and 30b can be opened and closed. A lock mechanism 20 is provided at the right hand portion of the outside of the casing 30. A printed circuit board 25 is accommodated in the top half 30a, a circuit arrangement, including such elements as an integrated circuit chip 23 or other necessary components for use in the terminal, being provided on the printed circuit board 25. This circuit arrangement has its respective components connected to a conductor pattern 24 formed on the printed circuit board 25 to provide a desired terminal circuit.
Three pressing connector pins 15, 17 and 18 project downwardly from the printed circuit board 25 toward a recess 26f, and one pressing type connector pin 16 projects upwardly from the bottom casing half 30b towards the recess 26f. The connector pin 15 is connected to the circuit pattern 24, and the connector pin 16 is also connected to other parts of the circuit pattern 24 through a flexible wire 27. The connector pins 15 and 16 are such that, when the casing halves are closed, the respective ends of the pins 15 and 16 project into the cable so that ~29~703 the pin 15 is coupled with the power supply conductor 1 and the connector pin 16 is coupled with the power supply conductor 2. The connector pins 17 and 18 are connected to other parts of the circuit pattern.
The terminal 30 is mounted on the cable unit 10 in such a manner that the power conductor portion ]Of is laid in the generally flat shaped recess 26f and signal conductor portions lOr are laid in the round recesses 26r. The terminal 30 is then closed, as shown in Figs. 4 and 6, with the casing halves being locked together by the member 20. The ends of the connector pins 15, 16, 17 and 18 penetrate the insulation layer 11, the pins 15 and 16 contacting the conductors 1 and 2 respectively, and the pins 17 and 18 clamping and contacting the conductors 3 and 4 by means of their fork shaped ends, as shown in Fig.
6. The respective projections 14 fit in the grooves 12 and 13 which thus serve to position the pins 17 and 18 with respect to the conductors 3 and 4.
An advantage of the present invention is that the terminal 30 can be mounted anywhere along the cable unit lO without need for working on the cable, such as cable cutting or end treatment.
Another advantage of the present arrangement is that, since the power conductors are closely arranged, it is possible to decrease the power source impedance, independently of the length of the cable unit.
A still further advantage of the present arrangement is that the cable unit has such a structure that cross talk between the power conductors and the signal conductors is smal], whereby noise on the signal conductors caused by the power conductors can be effectively avoided.
Cable arrangement or use in a multlplex transmission system The present invention relates to a cable arrangement in which a pair of power conductors for transmitting power and a pair of signal conductors for transmitting various signals are integrally formed in one cable structure.
To enable the prior art to be described with the aid of a diagram, the figures of the drawings will first be listed.
Fig. 1 is a circuit diagram showing an example of 10 multiplex transmission terminal;
Fig. 2 is a perspective view of an example of a wire connection in a conventional multiplex transmission terminal;
Fig. 3 is a perspective view showing an example of a 15 multiplex transmission cable according to an embodiment of the present invention;
Fig. 4 is a perspective view showing a specific feature of the use of a multiplex transmission cable according to the present invention;
Fig. 5 is a front view of the terminal shown in Fig. 4 with the casing halves opened, and Fig. 6 is a perspective view of a terminal attached to a multiplex transmission cable according to the present ' .
invention.
Fig. 1 shows an example of multiplex transmission system. In Fig. 1, lOl and 102 denote power transmission lines for supplying power to terminals 105 and 106. 103 and 104 denote data transmission lines for transmitting data information to the terminals 105 and 106. In the example shown, the respective terminals 105 and 106 are provided with actuators 107 and 108, such as an electric motor and a display lamp, which are activated by the data, in addition to various switches lO9 and 110 for inputting the data.
In the prior art, the power lines 101 and 102 and the data transmission lines 103 and 104 are connected to the respective terminals 105 and 106 by means of one or more separate conventional connecting wires or twisted pair wires, using external connectors 121 and 122, as shown in Fig. 2. In Fig. 2, the connecting lines shown generally by the arrow A are the lines to be connected to a front stage terminal and the lines shown generally by the arrow B are the lines to be connected to a back stage terminal.
However, in the prior art, since the respective lines are connected to the multiplex transmission terminal through one or more external connectors 121 and 122, in order to connect each line with the terminal 7 it is necessary to provide a cable of a suitable length corres-ponding to the position of the multiplex transmission terminal, having a suitable connector tip attached to the ends of the conductors of the cable.
Moreover, since the respective lines lOl and 102 are laid independently, it is necessary to consider the cable lay out to prevent noise caused by the power lines from being induced on the signal lines.
An essential ob~ect of the present invention is to provide a multiplex transmission cable arrangement that is capable of eliminating these problems.
9d5~
Another object oE the present invention is to provide a mu]tiplex transmission cable arrangement that is easy to connect to one or more multiplex transmission terminals.
A further object of the present invention is to 5 provide a multiple transmission cable arrangement that can avoid interference from the power lines.
To this end, the invention consists of a cable arrange-ment comprising a pair of power conductors which are electrically separated but closely adjacent each other; a 10 pair of signal conductors disposed to one side of said power conductors with the centers of the respective signal conductors positioned substantially at a level between said power conductors while extending parallel to the power conductors; and insulation layers for insulating 15 said power conductors and signal conductors, respectively.
Referring to Fig. 3, there is shown a multiplex trans-mission cable unit 10 comprising a pair of power supply conductors 1 and 2 of elongated strip shape extending parallel to each other. The two conductors 1 and 2 are 20 located as close as possible to each other, while maintaining the necessary distance for assuring the required withstand voltage. Disposing the conductors 1 and 2 close to each other increases the capacitance between them, whereby to provide a low impedance power 25 supply line. A pair of signal conductors 3 and 4 are disposed on one side of the conductors 1 and 2, at a level corresponding to the center between the conductors 1 and 2 and extending parallel to and alongside the conductors 1 and 2. The respective distances between the conductor 3 30 and the conductors 1 and 2 are equal to prevent electro-static induction from the conductors 1 and 2. The respective distances between the conductor 4 and the conductors 1 and 2 are also equal.
The conductors 1 to 4 are covered with an insulation :~.2~5703 _ 4 material 11 (referred to as insulation layer hereinafter), as shown in Fig. 3. Although the conductors 1 to 4 are covered with the insulation layer 11 throughout the whole length of the conductors, a multiplex transmission terminal can be connected to the conductors 1 to 4 anywhere along the cable, as desired. Grooves 12 and 13 are formed on the surface of the insulation layer 11, corresponding to interface portions between the power conductors 1 or 2 and the signal conductor 3, and between the two signal conductors 3 and 4.
Referring to Figs. 4, 5 and 6, a terminal casing 30 of a multiplex transmission terminal is composed of a top half 30a and a bottom half 30b made of a resin material and connected by one or more hinges 19, so that the halves 30a and 30b can be opened and closed. A lock mechanism 20 is provided at the right hand portion of the outside of the casing 30. A printed circuit board 25 is accommodated in the top half 30a, a circuit arrangement, including such elements as an integrated circuit chip 23 or other necessary components for use in the terminal, being provided on the printed circuit board 25. This circuit arrangement has its respective components connected to a conductor pattern 24 formed on the printed circuit board 25 to provide a desired terminal circuit.
Three pressing connector pins 15, 17 and 18 project downwardly from the printed circuit board 25 toward a recess 26f, and one pressing type connector pin 16 projects upwardly from the bottom casing half 30b towards the recess 26f. The connector pin 15 is connected to the circuit pattern 24, and the connector pin 16 is also connected to other parts of the circuit pattern 24 through a flexible wire 27. The connector pins 15 and 16 are such that, when the casing halves are closed, the respective ends of the pins 15 and 16 project into the cable so that ~29~703 the pin 15 is coupled with the power supply conductor 1 and the connector pin 16 is coupled with the power supply conductor 2. The connector pins 17 and 18 are connected to other parts of the circuit pattern.
The terminal 30 is mounted on the cable unit 10 in such a manner that the power conductor portion ]Of is laid in the generally flat shaped recess 26f and signal conductor portions lOr are laid in the round recesses 26r. The terminal 30 is then closed, as shown in Figs. 4 and 6, with the casing halves being locked together by the member 20. The ends of the connector pins 15, 16, 17 and 18 penetrate the insulation layer 11, the pins 15 and 16 contacting the conductors 1 and 2 respectively, and the pins 17 and 18 clamping and contacting the conductors 3 and 4 by means of their fork shaped ends, as shown in Fig.
6. The respective projections 14 fit in the grooves 12 and 13 which thus serve to position the pins 17 and 18 with respect to the conductors 3 and 4.
An advantage of the present invention is that the terminal 30 can be mounted anywhere along the cable unit lO without need for working on the cable, such as cable cutting or end treatment.
Another advantage of the present arrangement is that, since the power conductors are closely arranged, it is possible to decrease the power source impedance, independently of the length of the cable unit.
A still further advantage of the present arrangement is that the cable unit has such a structure that cross talk between the power conductors and the signal conductors is smal], whereby noise on the signal conductors caused by the power conductors can be effectively avoided.
Claims (3)
1. A cable arrangement comprising:
a pair of power conductors which are electrically separated but closely adjacent each other;
a pair of signal conductors disposed to one side of said power conductors with the centers of the respective signal conductors positioned substantially at a level between said power conductors while extending parallel to the power conductors; and insulation layers for insulating said power conductors and signal conductors, respectively.
a pair of power conductors which are electrically separated but closely adjacent each other;
a pair of signal conductors disposed to one side of said power conductors with the centers of the respective signal conductors positioned substantially at a level between said power conductors while extending parallel to the power conductors; and insulation layers for insulating said power conductors and signal conductors, respectively.
2. A cable arrangement according to claim 1, wherein said power conductors each have a generally flat, plate-like shape in cross-section.
3. A cable arrangement according to claim 1, wherein said insulation layers have grooves corresponding to intermediate portions between said power conductor and one of said signal conductors and between the two signal conductors.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63559/1987 | 1987-03-18 | ||
| JP62063559A JPH0721971B2 (en) | 1987-03-18 | 1987-03-18 | Multiplex transmission cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1295703C true CA1295703C (en) | 1992-02-11 |
Family
ID=13232698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000561768A Expired - Fee Related CA1295703C (en) | 1987-03-18 | 1988-03-17 | Cable arrangement for use in a multiplex transmission system |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0283012B1 (en) |
| JP (1) | JPH0721971B2 (en) |
| CA (1) | CA1295703C (en) |
| DE (1) | DE3850155T2 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0433210A (en) * | 1990-05-28 | 1992-02-04 | Takenaka Komuten Co Ltd | Under floor wiring sheet |
| FR2665868B1 (en) * | 1990-08-16 | 1995-06-30 | Menguy Didier | EQUIPMENT FOR THE ELECTRICAL SUPPLY OF BODIES ON BOARD A VEHICLE. |
| US5378171A (en) * | 1993-07-09 | 1995-01-03 | Intermatic, Inc. | Electrical cable connector |
| JPH0781182A (en) * | 1993-09-20 | 1995-03-28 | Seiko Epson Corp | Carriage driving system for serial printer |
| DE19526806A1 (en) * | 1995-07-13 | 1997-01-16 | Siemens Ag | Vehicle electrical system with multiplex control for motor vehicles |
| DE19526809A1 (en) * | 1995-07-13 | 1997-01-16 | Siemens Ag | On-board electrical supply network for automobile - has branch line, coupled to each switch or load, via plug connector incorporating multiplex control element, intercommunication circuit and load monitoring device |
| EP0807999A1 (en) * | 1996-05-17 | 1997-11-19 | Siemens Aktiengesellschaft | Power distribution system |
| DE19729411A1 (en) * | 1997-07-09 | 1999-02-11 | Siemens Ag | Power distribution system |
| EP1173901A1 (en) * | 1999-04-01 | 2002-01-23 | Nor.Web DPL Limited | Coupling apparatus and method |
| DE10012177A1 (en) * | 2000-03-13 | 2001-10-31 | Wieland Electric Gmbh | connection device |
| DE50011382D1 (en) * | 2000-07-18 | 2005-11-24 | Delphi Tech Inc | Electric power and signal conductor |
| JP3706972B2 (en) * | 2002-09-09 | 2005-10-19 | ユニメックス株式会社 | Conductive connector that can be attached to and detached from the power cord |
| FR2938123B1 (en) * | 2008-10-30 | 2011-02-11 | Ard Ind | ELECTRICAL CONNECTION DEVICE COMPRISING AT LEAST ONE FLEXIBLE, DEFORMABLE FLAT CABLE |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2218830A (en) * | 1939-05-13 | 1940-10-22 | Climax Radio & Television Co I | Combined antenna and power cord |
| IT1138341B (en) * | 1981-05-19 | 1986-09-17 | Vittorio Baldoni | FLAT ELECTRIC CABLE, IN PARTICULAR FOR POWER SUPPLY AND / OR REMOTE CONTROL OF USERS IN GENERAL, WITH SHEATH WITH DIFFERENTIATED STRUCTURE FOR MECHANICAL PROTECTION OF CONDUCTORS |
| US4678864A (en) * | 1985-06-27 | 1987-07-07 | Cooper Industries, Inc. | Mass terminable flat cable assembly with readily separable ground plane |
| DE3524516A1 (en) * | 1985-07-09 | 1987-01-22 | Gore W L & Co Gmbh | BAND CABLE |
-
1987
- 1987-03-18 JP JP62063559A patent/JPH0721971B2/en not_active Expired - Fee Related
-
1988
- 1988-03-17 DE DE3850155T patent/DE3850155T2/en not_active Expired - Fee Related
- 1988-03-17 CA CA000561768A patent/CA1295703C/en not_active Expired - Fee Related
- 1988-03-17 EP EP88104258A patent/EP0283012B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0283012B1 (en) | 1994-06-15 |
| EP0283012A2 (en) | 1988-09-21 |
| DE3850155D1 (en) | 1994-07-21 |
| EP0283012A3 (en) | 1990-02-21 |
| JPH0721971B2 (en) | 1995-03-08 |
| DE3850155T2 (en) | 1994-11-17 |
| JPS63231804A (en) | 1988-09-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |