EP0969552B1 - Capuchon d'extrémité pour connecteur à percement d'isolation - Google Patents
Capuchon d'extrémité pour connecteur à percement d'isolation Download PDFInfo
- Publication number
- EP0969552B1 EP0969552B1 EP99112511A EP99112511A EP0969552B1 EP 0969552 B1 EP0969552 B1 EP 0969552B1 EP 99112511 A EP99112511 A EP 99112511A EP 99112511 A EP99112511 A EP 99112511A EP 0969552 B1 EP0969552 B1 EP 0969552B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cable
- connector
- sealing cap
- assembly
- retaining
- 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
Links
Images
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
- 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
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5216—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases characterised by the sealing material, e.g. gels or resins
-
- 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
- H01R4/22—End caps, i.e. of insulating or conductive material for covering or maintaining connections between wires entering the cap from the same end
-
- 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
- H01R4/28—Clamped connections, spring connections
- H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
- H01R4/44—Clamping areas on both sides of screw
Definitions
- This invention relates to an insulation piercing connector assembly with a sealing cap for covering an end of a cable positioned in the insulation piercing connector.
- Insulation piercing connectors for tapping power from one cable to another typically comprise a pair of insulated clamping housings with insulation piercing blades mounted therein, the housings having a first set of teeth on one side thereof interconnected with a second set of teeth on another side thereof, each side for connection to a cable. Piercing of an outer insulation layer of the cables is effected by bolting the connector clamping halves together.
- Such connectors are widely used and for example shown in European patent 0 007 706, or in US 5,015,198, or FR 2 634 070. In the latter two prior references, the clamping insulation piercing connector is provided on one side thereof with an end cap that can be filled with sealing gel and which is received over an end of a cable.
- the connector is used for tapping off power from a continuous main conductor to a branch conductor (that commences at the connector).
- a branch conductor that commences at the connector.
- the end cap is fixed to the connector and the end of the cable is inserted into the connector until abutment against the end cap. Subsequently, the clamping halves are bolted together for the contacts to pierce through the cable outer insulation and connect with the inner conducting strands thereof.
- an electrical connector assembly comprising an electrical insulation piercing connector having a pair of clamping halves or jaws, at least one of the jaws comprising at least one insulation piercing terminal having insulation piercing contacts for piercing through an outer insulation layer of an electrical cable and contacting inner conducting strands thereof, the assembly further comprising an end sealing cap insertable over an end of the cable wherein the end sealing cap is adapted to be received between the clamping halves or jaws such that the insulation piercing contacts pierce through the end sealing cap during clamping connection to the cable.
- the end sealing cap can be pre-mounted to the cable end which may be inserted laterally (i.e.
- the connector assembly may further comprise one or more pre-clamping retention members mountable on at least one of the clamping halves, for retaining the end sealing cap and end cable to the connector prior to termination of the cable to the connector.
- the end sealing cap and cable end can thus be inserted between the jaws of the connector and held by the one or more retention devices thereto prior to clamping the jaws together.
- the connector assembly can thus be easily handled for example to position the other side of the clamping halves over another cable, whilst ensuring correct positioning of the cables in the connector for correct termination thereof.
- the retention member and end sealing cap may be further provided with interengaging shoulders that co-operate to locate and position the clamping jaw with respect to the end of the cable, thereby ensuring correct positioning during termination.
- the retention members may be movably mounted to the connector, for example slidable in a direction approximately perpendicular to the cable direction and towards on of the clamping jaws.
- the retention member provisionally clamps the cable one of the clamping jaws of the connector.
- Ratchet teeth may be provided along one or more sides or edges of the retention member for co-operation with complementary teeth in a guide portion attached to the clamping jaw for receiving and guiding the retention member, the interengaging teeth serving to maintain the retention member in the provisional clamping position.
- the end sealing cap may be made of an elastomeric material with a substantially cylindrical body defining a cavity adapted to snugly or elastically fit over a length of the cable end greater than the length of the connector (with regards to the cable direction).
- Two or more end sealing caps may be provided as a single moulding whereby the end sealing caps are breakably interconnected together such that different cable diameters can be accommodated.
- the end caps may for example be removably attached to the connector.
- a connector assembly 1 comprises an insulation piercing contact (IPC) connector 2 for interconnecting a first through-cable or end-cable (not shown) to an end-cable 6.
- the through-cable may for example be a main cable, off which electrical power is tapped to a branch, tap, or distribution cable 6 (hereinafter "end-cable").
- the IPC connector may interconnect two end-cables thereby acting as a splice. Both cables are comprised of inner conducting strands surrounded by an outer insulating layer.
- the IPC connector 2 is provided with a pair of opposed clamping halves 11, 13, each comprising insulation piercing contacts for piercing through the cable outer insulation layers and contacting the inner conducting strands.
- Such connectors are generally well known in the art, and may for example be provided with clamping halves comprising an insulative housing and contacts according to EP 0 007 706, FR 2 634 070, or US 5,015,198.
- the clamping halves 11, 13 are clamped together by means of a bolt 14 centrally positioned between cable receiving sides 5, 7 of the connector.
- insulation piercing connectors are well known in the art, the IPC connector 2 will not be described in further detail except for the features relating to the improvements thereof.
- the assembly further comprises an end sealing cap 8 mountable over the end of the end-cable 6, and a pre-termination retention device 4 mounted on the connector 2 for holding the end cable and cap to the connector prior to electrical termination, as will be described in more detail further on.
- the end cap 8 can be made of an elastomeric material such as a silicon based rubber, or a flexible plastic material that is injection moulded, and comprises a substantially cylindrical cavity 16 extending therethrough for snugly receiving the cable end 6 therein through a cable receiving or open end 18 until abutment with an opposed closed end 20 (see figures 2 and 5). Proximate the open end 18 the cavity 16 may be provided with a plurality of circumferential sealing ribs 22 for providing a water tight seal against the cable 6.
- the inner diameter of the cylindrical cavity 16 may be slightly smaller than the outer diameter of the cable such that elastic compression of the sealing ribs 22 against the cable provides a tight seal.
- the elasticity of a rubber sealing cap also enables a single sealing cap to be utilised for cables of slightly different diameters.
- a plurality of end sealing caps 8, 8' as shown in figure 5, may be provided with the connector assembly 1 for use with different cable sizes, whereby to provide an economical connector assembly the different end sealing caps 8, 8' may be moulded together such that they are integrally attached via bridging portions 24 and connected to the bridging portions 24 via thin breakable portions 26 such that the desired end cap may be broken off for use in the assembly, as shown for example in figure 2.
- the sealing caps may be fixable provisionally to the connector by means of the hole 25 received in the stud 27 on the connector.
- the end cap may also be made of a less resilient material such as a plastic, and for example partially filled with a sealing gel or grease that prevents the ingress of moisture by filling any hollow spaces within the cavity 16 when the cap is mounted on the cable.
- the end sealing cap is further provided with retaining walls 28, 29 proximate the or open end 18 and closed end 20 respectively, the retaining walls 28, 29 in the form of circular flanges defining retention shoulders 30, 31 extending radially from the elongate cylindrical body portion 32 of the sealing cap.
- the retention shoulders 30, 31 are in this embodiment spaced apart by a distance (D) that is greater than the length (L) of the IPC connector 2 (in the direction (C) of the cable 6) between opposed end faces 34, 35 of the connector.
- the retaining walls 28, 29 thus serve to locate and position the cable end assembled to the sealing cap 8 with respect to the connector, and in particular with respect to the insulation piercing contact teeth 9 thereof.
- the end sealing cap 8 Prior to termination the end sealing cap 8 is thus slipped over the end of the cable 8 until abutment of the severed end of the cable against the closed end 20 of the sealing cap, and subsequently inserted between the clamping halves or jaws 11, 13 on one side (for example the second side 7 as shown in figure 2) of the connector 2. Insertion of the assembled sealing cap 8 and cable 6 is effected in a direction approximately perpendicular to the cable direction (C) as indicated by the orthogonal direction (T) shown in figure 1.
- the retention members 4 Whilst two retention members are provided in the embodiment shown in figures 2-4, one retention member 4 mounted to one of the connector jaws 11 at either end 34, 35 respectively thereof may be provided.
- the retention member 4 comprises a retainer plate 38 movably received through a guide 40 securely attached to a support 39 extending from one of the clamping jaws 13 of the connector.
- the support 39 and guide 40 are integrally formed with the housing of the lower clamping jaw 13.
- the guide 40 has a cavity extending therethrough for guiding the retainer plate 38 in the direction of movement (V) thereof which is orthogonal to a plane formed by the cable direction (C) and direction of insertion (T) of the cable end into the connector.
- the retainer plate 38 is provided with a pair of flexible extensions 41 that extend from an actuation end 42 to a retaining end 44 of the plate, the ends 42, 44 at opposed ends of the retainer plate 38 with respect to the vertical direction (V) as viewed with respect to figure 1.
- Each extension 41 is provided with a plurality of teeth 46 on an outer edge thereof that are co-operable with teeth on respective inner edges of opposed sides of the guide 40 for retaining the retention plate 38 in the guide 40.
- the teeth 46 prevent the retaining plate 38 from being raised out of the retaining position shown in figure 3, which is achieved by depressing the retainer plate 38 (for example by manually pushing down the actuation end 42) until the opposed oblique clamping surfaces 48 of the retention end 44 clamp the cylindrical body portion 32 against the lower clamping jaw 13.
- the elasticity of the extensions 41 enable the retainer plate 38 to be depressed into the retaining position shown in figure 3 with the teeth 46 engaging co-operating teeth in the guide 40 like a ratchet.
- each retainer plate 38 engages the sealing cap body 32 adjacent the respective retaining shoulders 30, 31 of the sealing cap in order to retain the end cable 6 and sealing cap 8 securely to the connector, particularly in the cable direction (C).
- the sealing cap body 32 is tightly clamped against the end cable 6 at the locations of the retaining plates 38, particularly since the cap is made of a flexible material, thereby ensuring a secure grip of the end cable 6 to the assembly prior to termination.
- the cable 6 and sealing body 32 are "wedged" between the pair of resilient extensions 41.
- the extensions 41 extend from the actuation end 42 substantially as cantilever beams provided with hollow portions 50 to increase the flexibility thereof whilst providing a robust extension with a sufficiently large clamping edge 48.
- the assembled end cable and sealing cap provisionally retained to the connector in the pre-termination position shown in figure 3, can thus be handled by an operator for positioning another cable on the other side of the connector without concern about the need to position two cables simultaneously. This also ensures that when the bolt 14 is tightened and the clamping halves are moved together, the cables are correctly positioned between the insulation piercing contacts 9.
- the insulation piercing contact teeth of the connector are provided with a sufficient height to penetrate through the body 32 of the sealing cap and subsequently through the insulation of the cable for contacting the inner conductor core of the cable.
- the insulation piercing teeth of standard connectors typically have a sufficient depth for piercing through the seal cap and insulating layer of the cable.
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Claims (8)
- Assemblage de connecteur électrique (1) comprenant un connecteur électrique à percement d'isolation (2) comportant une paire de moitiés ou de mâchoires de serrage (11, 13), au moins une des mâchoires comprenant au moins une borne à percement de l'isolation comportant des contacts à percement d'isolation (9), destinés à percer une couche d'isolation externe d'un câble électrique (6) et à contacter les brins conducteurs internes correspondants, l'assemblage comprenant en outre un capuchon d'étanchéité d'extrémité (8) pouvant être inséré au-dessus d'une extrémité du câble (6), le capuchon d'étanchéité d'extrémité (8) étant destiné à être reçu dans une direction transversale (T) à une direction (C) du câble entre les moitiés de serrage (11, 13), de sorte que les contacts à percement d'isolation (9) percent le capuchon d'étanchéité d'extrémité (8) au cours de la connexion au câble.
- Assemblage selon la revendication 1, dans lequel le capuchon d'étanchéité d'extrémité (8) comporte au moins une paroi de retenue (28, 29) pour positionner le capuchon d'étanchéité d'extrémité par rapport au connecteur (2) dans la direction du câble (C).
- Assemblage selon la revendication 2, dans lequel le capuchon d'étanchéité comprend au moins une paire desdites parois de retenue (28, 29) séparées d'une distance (D) en vue d'un positionnement proche des extrémités opposées respectives (34, 35) du connecteur ou en un point adjacent à celles-ci, dans la direction du câble (C).
- Assemblage selon les revendications 2 ou 3, dans lequel les parois de retenue (28, 29) du capuchon d'étanchéité ont la forme de disques s'étendant radialement à partir d'une partie de corps cylindrique (32) du capuchon d'étanchéité, définissant ainsi respectivement des épaulements de retenue opposés (30, 31).
- Assemblage selon l'une quelconque des revendications précédentes, dans lequel l'assemblage comprend un élément de retenue (4) comprenant un guide (40) fixé fermement à une des mâchoires de serrage (13) et recevant une plaque de retenue (38) pouvant être déplacée d'une position de réception du câble, dans laquelle le capuchon d'étanchéité (8) et le câble d'extrémité (6) peuvent être insérés entre les mâchoires (11, 13) du connecteur, et une position de retenue dans laquelle le câble et le capuchon d'étanchéité sont retenus et positionnés contre ladite une mâchoire de serrage (13) avant le raccordement du connecteur.
- Assemblage selon l'une quelconque des revendications précédentes, dans lequel la plaque de retenue (13) comprend au moins une extension flexible (41) comportant des dents (46) le long d'un bord externe correspondant, pouvant coopérer avec des dents complémentaires dans le guide de retenue (40) pour retenir la plaque de retenue (38) respectivement dans la position de réception du câble et dans la position de retenue.
- Assemblage selon l'une quelconque des revendications précédentes, dans lequel le connecteur comprend une paire d'éléments de retenue (4) positionnés respectivement près des extrémités opposées (34, 35) du connecteur par rapport à la direction du câble (C).
- Assemblage selon l'une quelconque des revendications précédentes, dans lequel plusieurs capuchons d'étanchéité d'extrémité (8, 8') destinés à recevoir les câbles de diamètre différent sont assemblés par moulage d'une seule pièce par l'intermédiaire de parties de liaison détachables (24).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99112511A EP0969552B1 (fr) | 1998-07-02 | 1999-07-01 | Capuchon d'extrémité pour connecteur à percement d'isolation |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98401663 | 1998-07-02 | ||
EP98401663 | 1998-07-02 | ||
EP99112511A EP0969552B1 (fr) | 1998-07-02 | 1999-07-01 | Capuchon d'extrémité pour connecteur à percement d'isolation |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0969552A1 EP0969552A1 (fr) | 2000-01-05 |
EP0969552B1 true EP0969552B1 (fr) | 2002-10-30 |
Family
ID=26151657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99112511A Expired - Lifetime EP0969552B1 (fr) | 1998-07-02 | 1999-07-01 | Capuchon d'extrémité pour connecteur à percement d'isolation |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0969552B1 (fr) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1943020A (en) * | 1929-05-11 | 1934-01-09 | Karl V Johnson | Cable tap connecter |
FR2601516B2 (fr) * | 1984-06-15 | 1988-08-05 | Sicame Sa | Connecteur de derivation isole pour cables electriques |
NL8701466A (nl) * | 1987-02-26 | 1988-09-16 | Lovink Terborg Bv | Kunststof aftakklem en koppelschroef. |
FR2630865B1 (fr) * | 1988-04-27 | 1991-12-13 | Niled Sa | Borne de derivation pour le raccordement d'un conducteur d'une ligne aerienne isolee a un conducteur de derivation isole |
FR2631491B1 (fr) * | 1988-05-13 | 1991-12-06 | Sicame Sa | Cale pour connecteur electrique de derivation, et connecteur electrique de derivation comportant une telle cale |
FR2635615B1 (fr) * | 1988-08-22 | 1990-11-09 | Sicame Sa | Accessoire de branchement pour cable a relier a un quelconque circuit |
US5445538A (en) * | 1993-11-17 | 1995-08-29 | Thomas & Betts Corporation | Electrical connector strain relief |
-
1999
- 1999-07-01 EP EP99112511A patent/EP0969552B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0969552A1 (fr) | 2000-01-05 |
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