WO2016134457A1 - Ensemble anneau d'étanchéité et son procédé d'installation - Google Patents

Ensemble anneau d'étanchéité et son procédé d'installation Download PDF

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Publication number
WO2016134457A1
WO2016134457A1 PCT/CA2016/050157 CA2016050157W WO2016134457A1 WO 2016134457 A1 WO2016134457 A1 WO 2016134457A1 CA 2016050157 W CA2016050157 W CA 2016050157W WO 2016134457 A1 WO2016134457 A1 WO 2016134457A1
Authority
WO
WIPO (PCT)
Prior art keywords
grommet
casing
electrical cable
cavity
cover
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.)
Ceased
Application number
PCT/CA2016/050157
Other languages
English (en)
Inventor
Éric LATULIPE
Jean-François LAVIGNE
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.)
Dana TM4 Inc
Original Assignee
TM4 Inc
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 TM4 Inc filed Critical TM4 Inc
Publication of WO2016134457A1 publication Critical patent/WO2016134457A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/0018—Casings with provisions to reduce aperture leakages in walls, e.g. terminals, connectors, cables
    • 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
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/013—Sealing means for cable inlets
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/06—Hermetically-sealed casings
    • H05K5/069—Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/12—End pieces terminating in an eye, hook, or fork
    • 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
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/512—Bases; Cases composed of different pieces assembled by screw or 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
    • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/02—Cable terminations
    • H02G15/06—Cable terminating boxes, frames or other structures
    • H02G15/064—Cable terminating boxes, frames or other structures with devices for relieving electrical stress
    • H02G15/068—Cable terminating boxes, frames or other structures with devices for relieving electrical stress connected to the cable shield only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/02—Cable terminations
    • H02G15/06—Cable terminating boxes, frames or other structures
    • H02G15/076—Cable terminating boxes, frames or other structures for multi-conductor cables
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/08—Distribution boxes; Connection or junction boxes
    • H02G3/081—Bases, casings or covers
    • H02G3/083—Inlets

Definitions

  • the present disclosure relates to sealing grommets. More specifically, the present disclosure is concerned with a sealing grommet assembly used to allow an electrical cable to enter a casing while both providing a shield connection and preventing the elements from entering the casing. The present disclosure is also concerned with the installation method of such a grommet assembly.
  • Sealing grommets used to allow electrical cable to enter a casing while preventing the elements from entering the casing are known in the art.
  • an electrical cable includes a shield that is to be connected to the casing
  • this connection is conventionally done inside the casing by fastening the shield to a predetermined connection point in the casing, which takes some real estate of the casing, adds to the cost of the hardware and increases the assembly time.
  • Figure 1 is a sectional side elevation view illustrating an electrical cable mounted to a casing via a sealing grommet assembly according to a first illustrative embodiment
  • Figure 2 is a top exploded view of the cable of Figure 1 ;
  • Figure 3 is a top exploded view illustrating the sealing grommet assembly of Figure 2 being inserted in the cavity of the casing;
  • Figure 4 is a sectional top plan view of the electrical cable and casing of Figure 1 ;
  • Figure 5 of the appended drawings is a top plan view similar to Figure 4, but illustrating a sealing grommet assembly according to a second illustrative embodiment
  • Figure 6 is a sectional view taken along line 6-6- of Figure 5;
  • Figure 7 is a top exploded view similar to Figure 2 illustrating a sealing grommet assembly according to a third illustrative embodiment.
  • a sealing grommet assembly to be connected to a cavity of a casing; the cavity being provided with a sloping peripheral wall.
  • the sealing grommet assembly comprising a body including an aperture to receive an electrical cable therethrough and a tapered peripheral wall so configured and sized as to fit in the cavity of the casing and a flat top portion.
  • the sealing grommet assembly also comprises a cover so configured and sized as to fit onto the flat top portion of the body and means for securing the cover to the casing.
  • a method for installing an electrical cable provided with a shield to a cavity of a casing using a sealing grommet and a cover the sealing grommet including at least one aperture to receive the electrical cable; the grommet having a tapered peripheral wall so configured and sized as to fit in the cavity and a flat top portion and the cover having an aperture to receive the electrical cable; the cavity being provided with a sloping peripheral wall.
  • the method including: inserting the electrical cable in the cover aperture; inserting the electrical cable in the grommet aperture; folding the shield of the electrical cable over a portion of the tapered peripheral of the grommet; inserting the grommet in the cavity, thereby creating an electrical connection between the shield and the casing; and mounting the cover to the casing.
  • connection should be construed herein and in the appended claims broadly so as to include any cooperative or passive association between mechanical parts or components.
  • such parts may be assembled together by direct connection, or indirectly connected using further parts therebetween.
  • the connection can also be remote, using for example a magnetic field or else.
  • electrical cable is to be construed herein and in the appended claims as one or more electrical conductors that are included in a tubular shield and covered by a sheath.
  • Figures 1 to 4 illustrate a sealing grommet assembly 10 allowing an electrical cable 12 to be inserted into a casing 14 while providing a seal against the elements and an electric connection between a shield of the electrical cable 12 and the casing 14.
  • the electrical cable 12 includes three electrical wires 16, 18,
  • the electrical cable 12 also includes a shield 28 enclosing the wires 16-20 and an insulating sheath 30 covering the shield 28.
  • the casing 14 includes a body 32 and a cover 34.
  • the body including an aperture 36 allowing the electric wires 16-20 therethrough and a grommet-receiving cavity 38 aligned with the aperture 26 and having sloping peripheral walls.
  • the sealing grommet assembly 10 includes a sealing grommet 40, a cover 42 and fasteners 44, 46 (see Figure 2) in the form of bolts.
  • the sealing grommet 40 includes a central aperture 48 configured to receive the electrical cable 12 therethrough, a tapered peripheral wall 50, a flat bottom wall 52 and a flat top wall 54.
  • the angle of the tapered peripheral wall 50 is configured to generally correspond to the sloping peripheral wall of the grommet receiving cavity 38 as will be described hereinbelow.
  • the sealing grommet 40 is made of a slightly deformable and sealing material such as, for example, rubber. Of course, other materials such as other elastomers could also be used to manufacture the sealing grommet 40.
  • the cover 42 is made of rigid material such as metal and includes a central aperture 56 allowing the electrical cable 12 therethrough and fastening apertures 58 allowing the fasteners 44 and 46 therethrough.
  • a central aperture 56 allowing the electrical cable 12 therethrough and fastening apertures 58 allowing the fasteners 44 and 46 therethrough.
  • other type of hard material could be used.
  • the body 32 of the casing 14 includes threaded apertures 60 and 62 configured to respectively receive fasteners 44 and 46.
  • threaded apertures 60 and 62 configured to respectively receive fasteners 44 and 46.
  • untapped can be used if the fasteners 44 and 46 are of the self-tapping type.
  • the exposed length of shield 28 which is conventionally made of a number of thin wires braided together, can be folded onto the tapered peripheral wall 50 of the grommet 40 as illustrated by arrows 64.
  • Figure 3 shows the shield 28 so folded onto the grommet 40 and illustrates the beginning of the insertion of the grommet 40 into the cavity 38.
  • the length of shield that was exposed is such that only a portion of the tapered peripheral wall 50 of the grommet 40 is covered thereby. The purpose of which will be described hereinbelow.
  • a force applied to the flat top wall 54 causes the beginning of the insertion.
  • the cover 42 can then be applied to the flat top wall 54, the fasteners 44 and 46 can be engaged to the threaded apertures 60 and 62 to thereby apply a force (see arrows 68) that completes the insertion of the grommet 40 partially enclosed by the shield 28.
  • the shield 28 enclosing a portion of the grommet 40 is compressed into the peripheral wall 50 of the grommet 40, which is made of deformable material as discussed hereinabove. Accordingly, since the body 32 is made of electrically conductive material, there is an electrical connection between the shield 28 and the casing 14. Furthermore, since the shield 28 only covers a portion of the peripheral wall 50 of the grommet 40, the compression of the rest of the peripheral wall 50 against the sloping peripheral wall of the cavity 38 creates a seal against the elements. This compression also creates a seal between the sheath 30 of the cable 12 and the grommet 40.
  • fasteners 44 and 46 could be different.
  • a collet that can be screwed (not shown) could be used.
  • bottom and top walls 52 and 54 of the sealing grommet 40 are described hereinabove as being flat, other shape could be provided as long as the cover 42 can apply sufficient pressure to cause the seal between the grommet and the casing.
  • the electric cable 12 has been illustrated herein as including three (3) electrical wires, any number of wires could be present in the cable.
  • the electric cable 12 is shown as being a power cable, data cable (not shown) could also be paired with an appropriately sized sealing grommet assembly.
  • FIG. 5 a sealing grommet assembly 100 allowing three electrical cables 102, 104 and 106 to be inserted into a casing 108 while providing a seal against the elements and an electric connection between the individual shields of the electrical cables and the casing will be briefly described.
  • Each cable 102-106 is provided with a respective shield 1 10,
  • each shield 1 10-1 14 are then each separated in two and folded on the top and bottom of the grommet 1 16 as can be seen from Figure 6. Accordingly, each shield will be in contact with the casing 108.
  • the cover 1 18 is permanently mounted to a shoulder portion
  • Figure 5 illustrates the walls 122 prior to deformation while Figure 6 shows the same wall 122 after the deformation.
  • sealing grommet assembly 200 according to a third illustrative embodiment will be described. Since the sealing grommet assembly 200 is very similar to the sealing grommet assembly 10 of Figures 1 to 4 are very similar, only the differences therebetween will be describes hereinbelow, for concision purpose.
  • the major differences between the sealing grommets assemblies 200 and 10 lie in the size and shape of the sealing grommet 202 and in the size of the corresponding grommet-receiving cavity 204. Indeed, as can be seen from Figure 7, the sealing grommet 202 is longer that the sealing grommet 40 of Figures 1 to 4. Accordingly, the grommet- receiving cavity 204 is deeper so that the installed grommet does not overly protrude from the casing 14. This increase in length improves the seal between the grommet 202 and the cavity 204 should lateral pressure be applied to the electrical cable 12.
  • Another seal-improving feature of the grommet 202 with respect to the grommet 40 of Figures 1 to 4 consists in the three integral circumferential protrusions 206 that are provided on the tapered peripheral wall of the grommet 202. These protrusions 206 may be viewed as three integral O-rings. One skilled in the art will understand that these protrusions 206 will improve the seal between the grommet 202 and the cavity 204 during normal operation and when lateral pressure is applied to the electrical cable 12.
  • sealing grommet and installation method therefor is not limited in its application to the details of construction and parts illustrated in the accompanying drawings and described hereinabove.
  • the sealing grommet and installation method therefor is capable of other embodiments and of being practiced in various ways.
  • phraseology or terminology used herein is for the purpose of description and not limitation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Installation Of Indoor Wiring (AREA)

Abstract

L'invention concerne un ensemble anneau d'étanchéité devant être relié à une cavité d'un boîtier doté d'une paroi périphérique en pente. L'ensemble anneau d'étanchéité comprend un corps comprenant une ouverture permettant de recevoir un câble électrique à travers celui-ci et une paroi périphérique conique conçue et dimensionnée de sorte à s'adapter dans la cavité du boîtier et une partie supérieure plate. L'ensemble anneau d'étanchéité comprend également un couvercle conçu et dimensionné de sorte à s'adapter sur la partie supérieure plate du corps et un moyen permettant de fixer le couvercle au boîtier.
PCT/CA2016/050157 2015-02-24 2016-02-19 Ensemble anneau d'étanchéité et son procédé d'installation Ceased WO2016134457A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562119877P 2015-02-24 2015-02-24
US62/119,877 2015-02-24

Publications (1)

Publication Number Publication Date
WO2016134457A1 true WO2016134457A1 (fr) 2016-09-01

Family

ID=56787914

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2016/050157 Ceased WO2016134457A1 (fr) 2015-02-24 2016-02-19 Ensemble anneau d'étanchéité et son procédé d'installation

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2024513614A (ja) * 2021-04-01 2024-03-27 ジェイ．エス．ティー．コーポレーション エラストマー製シールばね
CN118946070A (zh) * 2024-08-14 2024-11-12 南京全信传输科技股份有限公司 一种盾构机用数据模块密封舱

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4490576A (en) * 1981-08-10 1984-12-25 Appleton Electric Co. Connector for use with jacketed metal clad cable
US4674807A (en) * 1986-03-03 1987-06-23 Harvey Hubbell Incorporated Shielded connector
EP1195856A2 (fr) * 2000-10-06 2002-04-10 Tyco Electronics AMP K.K. Bague d'étanchéité
WO2008141458A1 (fr) * 2007-05-23 2008-11-27 Tm4 Inc. Connecteur électrique
WO2014112146A1 (fr) * 2013-01-16 2014-07-24 住友電装株式会社 Organe protecteur de passe-câble et dispositif de connexion de câble électrique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4490576A (en) * 1981-08-10 1984-12-25 Appleton Electric Co. Connector for use with jacketed metal clad cable
US4674807A (en) * 1986-03-03 1987-06-23 Harvey Hubbell Incorporated Shielded connector
EP1195856A2 (fr) * 2000-10-06 2002-04-10 Tyco Electronics AMP K.K. Bague d'étanchéité
WO2008141458A1 (fr) * 2007-05-23 2008-11-27 Tm4 Inc. Connecteur électrique
WO2014112146A1 (fr) * 2013-01-16 2014-07-24 住友電装株式会社 Organe protecteur de passe-câble et dispositif de connexion de câble électrique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2024513614A (ja) * 2021-04-01 2024-03-27 ジェイ．エス．ティー．コーポレーション エラストマー製シールばね
JP7808027B2 (ja) 2021-04-01 2026-01-28 ジェイ．エス．ティー．コーポレーション エラストマー製シールばね
CN118946070A (zh) * 2024-08-14 2024-11-12 南京全信传输科技股份有限公司 一种盾构机用数据模块密封舱

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