CN103004045B - Water resistant electrical cable gland - Google Patents
Water resistant electrical cable gland Download PDFInfo
- Publication number
- CN103004045B CN103004045B CN201180020698.8A CN201180020698A CN103004045B CN 103004045 B CN103004045 B CN 103004045B CN 201180020698 A CN201180020698 A CN 201180020698A CN 103004045 B CN103004045 B CN 103004045B
- Authority
- CN
- China
- Prior art keywords
- tubular body
- outer tubular
- cable
- inner tubular
- armouring
- 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.)
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Classifications
-
- 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
- H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
- H02G3/0616—Joints for connecting tubing to casing
- H02G3/0625—Joints for connecting tubing to casing with means for preventing disengagement of conductors
- H02G3/0666—Joints for connecting tubing to casing with means for preventing disengagement of conductors with means clamping the armour of the conductor
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Installation Of Indoor Wiring (AREA)
- Cable Accessories (AREA)
- Insulating Bodies (AREA)
Abstract
A kind of cable bedding, comprising: the Outer tubular body with free end; With the inner tubular body with external threaded portion, external threaded portion cooperates with the inner threaded portion of Outer tubular body and engages, Outer tubular body and inner tubular body form the inner chamber holding the armouring clip assembly comprising armouring clamping cone and cooperation clamping ring, by inner tubular body is screwed into Outer tubular body, armouring clamping cone and cooperation clamping ring are pushed into thus cooperate.External screw-thread on inner tubular body is limited to its inner end region, and the smooth exterior cylindrical surfaces that diameter is not more than thread head region minimum diameter extends to the nut structure of tubular body outside.The annular seal cooperated with the exterior cylindrical surfaces of inner tubular body is placed in service position by the circumferential groove adjacent with receiving the Outer tubular body end of inner tubular body of Outer tubular body inner surface.Before cable bedding is mounted, annular seal is arranged in circumferential groove or is positioned in the exterior cylindrical surfaces adjacent with its thread head region of inner tubular body.
Description
Technical field
The present invention relates to a kind of water resistant electrical cable gland (water resistant electrical cable gland) being suitable for use in the general type making cable termination, wherein, cable enters electric connection box or other shell, in this electric connection box or other shell, the electric conductor of cable is connected to the terminal of a kind of form or another kind of form.
More specifically, the present invention relates to and be a kind ofly used in as the cable bedding on the cable of Types Below: the cable of the type has the usual so-called armouring (armoring) between interior electric insulation sheath and dispatch from foreign news agency insulation sheaths.
Should be understood that in wide sense, use term " armouring " in this manual.This term comprises the armouring of following form thus: namely, be arranged to be formed between insulation sheaths and external insulation sheath in cable conduct electricity substantially (typically taking on earthed conductor) mechanical protection layer and there is the rigid line of the longitudinal extension of the remarkable rugosity of sizable tensile strength.This term also comprises the armouring of following form in its wide sense: namely, optionally be compiled to pigtail, thin, flexible much bigger line and metal tape (neither there is sizable tensile strength), they play and strengthen cable, provide electromagnetic shielding or be just typically used as the conductive path on ground that these are active one or more.
These multi-form armourings have thickness different greatly, and the present invention relates to a kind of cable bedding that can adapt to such different-thickness.
Background technology
Common way is the armouring clip being designed to cable bedding have conical form, and the armouring clip of described conical form has for the outer cone surface with side engagement in armouring and is suitable for cooperating firmly be clipped in by armouring between these two conical surfaces with the clamping ring of the inner surface with complementary tapers shape.Suitable locking cone angle and to the length of cable bedding other constraint and material content be not naturally suitable for the armouring adapting to completely different thickness.
For the armouring (but they have similar size and character) being arranged on each different-thickness on cable provides different cable bedding normally impracticable and expensive.
In British Patent No. 2,269, a solution of this problem has been set forth in 710, that patent describes substantially conventional cone and clamping ring, wherein, this cone be made much longer and/or this clamping ring shorter, only in order to adapt to different its thickness by substantially conventional layout.This suggestion is not attractive especially, wherein, adapt to the armouring of suitable heavy thickness difference, because whole liner must make much longer, thus need the cost of more material and adjoint increase.
British Patent No. 2,269,711 describe another suggestion, in this suggestion, clamping ring has two conical surfaces, and these two conical surfaces are in the face of contrary axial direction and be suitable for by selecting correct in the position of two in liner possible axis reversions one optionally to engage with the cable armouring of different-thickness.It is difficult for installing such liner, because be difficult to discover correct orientation from the outer surface of clamping ring.If clamping ring is not installed with correct orientation, then this layout defending party to the application think unpractical and may or even dangerous.
British Patent No. 2,296,998 provide another suggestion, in this suggestion, make the outer cone surface of cone stepped, to provide two of identical cone angle different conical surfaces, optionally engage for the thickness according to armouring with same clamping ring.Inevitably, the active length of clamping surface is restricted, and the free end of the correct installation requirement armouring of this cable bedding should quite accurately be pruned, this only have common hand tool can scene be extremely difficultly realize and control.
International Patent Publication No. W WO01/93396 describes a kind of layout, in this arrangement, clamping cone and clamping ring have two different drift angles, make peripheral clamping surface be provided for thinner armouring, and the locking cone angle of routine are provided for thicker armouring.Applicant prefers this layout.
When rear one arrange and some mention other solution, need larger the moving to axial relative to endosome of ectosome.The former typically directly cooperates with clamping ring, and clamps cone by endosome and advance towards clamping ring, and endosome has the screw thread cooperated with the screw thread on the inner surface of ectosome.
When water resistant electrical cable gland (being usually called rainproof liner), the seal entering a kind of form of cable armouring clip for anti-sealing is seal with O ring part, and this seal with O ring part to be carried in the groove of the outer surface of inner cable cushion body and the smooth, cylindrical nestled up on the inner surface of the ectosome of liner and sealing.Certainly, relative to the axially different position that ectosome presents, the endosome caused by the armouring of different-thickness means that enclosing with O shape the length with the ectosome of slippery inner surface cooperated needs long enough to adapt to two terminal axial locations.
Usually outer cable cushion body is made by carrying out turning to the metal crimp goods of the brass of suitable grade typically, stainless steel or aluminium on suitable lathe.This stampings are expensive, therefore, it is desirable to be only limitted to necessary length for the length of the stampings of each cable bedding.
Summary of the invention
The object of this invention is to provide general type discussed above and adopt O shape to enclose outside between cable bedding body and inner cable cushion body or the cable bedding of other annular seal, in this cable bedding, be carried on seal with O ring part compared with the above-mentioned situation in the groove in the outer surface of inner cable cushion body, the length of outer cable cushion body is less.
According to the present invention, provide a kind of cable bedding, this cable bedding comprises: Outer tubular body, and Outer tubular body has free end, and free end forms the inlet end portion being used for cable, and inner tubular body, inner tubular body has external threaded portion, external threaded portion cooperates with the inner threaded portion of Outer tubular body and engages, wherein Outer tubular body and inner tubular body form inner chamber, inner chamber holds armouring clip assembly, armouring clip assembly comprises armouring clamping cone and cooperation clamping ring, by inner tubular body is screwed in Outer tubular body, armouring clamping cone and cooperation clamping ring are pushed into thus form cooperation relation in work, the feature of this cable bedding is, external screw-thread on inner tubular body is restricted to the inner end region of inner tubular body, the nut that the smooth exterior cylindrical surfaces that wherein diameter is not more than the minimum diameter in thread head region extends to from described thread head region in the outside of Outer tubular body constructs, and the feature of this cable bedding is, the inner surface of Outer tubular body has the circumferential groove adjacent with receiving the Outer tubular body end of inner tubular body, for annular seal is placed in service position, wherein annular seal cooperates with the exterior cylindrical surfaces of inner tubular body, and wherein, before cable bedding is mounted, annular seal is arranged in the described circumferential groove of Outer tubular body, or be positioned in the exterior cylindrical surfaces adjacent with its thread head region of inner tubular body.
Other feature of the present invention enables annular seal be elastic O-ring seal; The Outer tubular body end of receiving inner tubular body is had and imports gradually tip, the O shape in the exterior cylindrical surfaces be close to its thread head region importing that gradually tip is arranged such that to be carried on inner tubular body is enclosed and automatically will be extruded and be rolled in Outer tubular body to be snapped in its service position in circumferential groove; Enabling inner tubular body have the shallow circumferential groove be close to its thread head region, for partly receiving seal with O ring part, preparing for seal with O ring part is incorporated in its service position; The internal whorl in Outer tubular body is enable to extend beyond circumferential groove; And enable armouring clamp cone to be configured to the armouring of different-thickness is clipped in its different position to axial with cooperation clamping ring.
In preferred arrangements, as as described in International Patent Publication No. W WO01/93396, armouring clamping cone and each in clamping ring have substantially conventional and first of relative little cone angle the cooperation tapered clamping surface and the larger diameter end portion of the first tapered clamping surface of each in this cone and clamping ring has the second cooperation clamping surface outwards diverged from the first conical surface.
Second cooperation clamping surface is suitable for the armouring of relative small thickness to be clipped between the second cooperation clamping surface thus, and the first cooperation clamping surface is suitable for the armouring of relatively large thickness to be clipped between the first cooperation clamping surface.The cone angle of the first cooperation tapered clamping surface can be 15 degree to 25 degree and preferably about 20 degree, the axle of the first clamping surface and cable bedding is formed from 7.5 degree to 12.5 degree and the preferably angle of about 10 degree.Second cooperation clamping surface all to have between about 60 degree and 90 degree and the preferably cone angle of about 70 degree in each case, the axle of the second clamping surface and cable bedding is formed from about 30 degree to about 45 degree and the preferably angle of about 35 degree.
This cable bedding preferably has two-part structure, wherein clamp cone and keep captured relative to inner tubular body, and clamping ring at least temporarily keeps being trapped in Outer tubular body.
This cable bedding preferably comprises for being sealed in cable compressive seal and external compression seal on sheath and epitheca.
In order to the present invention can be understood more fully, now with reference to accompanying drawing, one embodiment of the present of invention are described.
Accompanying drawing explanation
In the accompanying drawings:
Fig. 1 is the front view according to cable bedding of the present invention, wherein shows the upper half of this cable bedding with cross section;
Fig. 2 is the sectional view amplified, and show the relation between Outer tubular body and inner tubular body, wherein cone and clamping ring separated by the thicker armoury wire be sandwiched between them;
Fig. 3 is the view (illustrate only the half in cross section) similar to Fig. 2, shows Outer tubular body and inner tubular body, and wherein cone and clamping ring separated by the thinner armoury wire be sandwiched between them;
Fig. 4 shows inner tubular body before inner tubular body is about to be arranged in Outer tubular body and Outer tubular body with similar view;
Fig. 5 shows the position of the O shape circle of the prior art of the groove of the outer surface being arranged in inner tubular body with similar view, and clearly show the saving in the length of ectosome.
Embodiment
In embodiments of the invention shown in Fig. 1 to Fig. 4 in the accompanying drawings, cable bedding comprises: Outer tubular body 1, and Outer tubular body 1 has free end 2, and free end 2 forms the inlet end portion being used for cable 3; And inner tubular body 4, inner tubular body 4 has external threaded portion 5, and external threaded portion 5 cooperates with the inner threaded portion 6 of Outer tubular body and engages.
Under mounted condition, this two individual formation inner chamber, this inner chamber holds armouring clip assembly, this armouring clip assembly comprises armouring clamping cone 7, by being screwed in Outer tubular body by inner tubular body, armouring clamping cone 7 is pushed into thus forms cooperation relation with the clamping ring 8 that cooperates in work.
As the present invention realize, the external screw-thread on inner tubular body has short length and is restricted to the inner end region of inner tubular body.The nut that the smooth exterior cylindrical surfaces 9 with the diameter more smaller than the minimum diameter in thread head region extends to from described thread head region in the outside of Outer tubular body constructs 11.
The inner surface of Outer tubular body has the annular CD-ring seal part 12 be placed in circumferential groove 13, and circumferential groove 13 is adjacent with the Outer tubular body end of receiving inner tubular body.Seal with O ring part engages with the exterior cylindrical surfaces of inner tubular body, to seal completely from the external world to holding the chamber of armouring clip also thus to any admission passage of armoury wire.
Conveniently in assembling cable bedding, receive the Outer tubular body end of inner tubular body to have and import gradually tip 14, the O shape in exterior cylindrical surfaces be close to thread head region importing that gradually tip 14 is arranged such that to be slidably fitted in inner tubular body is enclosed automatically to be extruded as is also shown in fig. 4 and to be rolled in outer tubular member and is also caused being snapped in its service position in circumferential groove thus.In order to this process auxiliary, inner tubular body is provided with the shallow slot 21 be close to external threaded portion 5, O shape is enclosed and is partly seated in this groove.The width of this groove is typically less than the width of the cross-sectional diameter of O shape circle, and is preferably the about half of the cross-sectional diameter of O shape circle.This is shown in Figure 4.Internal whorl in Outer tubular body can extend beyond circumferential groove to facilitate manufacture.
As noted above, as as described in International Patent Publication No. W WO01/93396, armouring clamping cone and each in clamping ring have substantially conventional and first of relative little cone angle the cooperation tapered clamping surface 15 and the larger diameter end portion of the first tapered clamping surface of each in this cone and clamping ring has the second cooperation clamping surface 16 outwards diverged from the first conical surface.
Second cooperation clamping surface is suitable for being clipped in by the armouring of relative small thickness between the second cooperation clamping surface thus, as shown in Figure 3; And the first cooperation clamping surface is suitable for being clipped in by the armouring of relatively large thickness between the first cooperation clamping surface, as shown in Figure 2.The preferred cone angle that these two surperficial cone angles are pointed above being.
In this embodiment of the invention, cable bedding has two-part structure, wherein clamp cone and keep captured relative to inner tubular body, and clamping ring at least temporarily keeps being trapped in Outer tubular body.
Cable bedding comprises for being sealed in cable compressive seal 17 and external compression seal 18 on sheath 19 and epitheca 20.
Should be understood that structure cable bedding as above makes it possible to the considerable length of the slug press material saved for making Outer tubular body.This is clearly shown that in Figure 5, wherein, shows the part of conventional gaskets with O shape circle A, and O shape circle A to be carried in the groove B in inner tubular body C and to cooperate with the slippery inner surface D of Outer tubular body E.As shown in dotted line F, enforcement of the present invention make Outer tubular body can be shorter than existing situation stop.
Should be understood that without departing from the scope of the invention, many changes can be made to the above embodiment of the present invention.
Claims (10)
1. a cable bedding, comprising: Outer tubular body, and described Outer tubular body has free end, and described free end forms the inlet end portion being used for cable, and inner tubular body, described inner tubular body has external threaded portion, described external threaded portion cooperates with the inner threaded portion of described Outer tubular body and engages, wherein said Outer tubular body and described inner tubular body form inner chamber, described inner chamber holds armouring clip assembly, described armouring clip assembly comprises armouring clamping cone and cooperation clamping ring, by described inner tubular body is screwed in described Outer tubular body, described armouring clamping cone and described cooperation clamping ring are pushed into thus form cooperation relation in work, the feature of described cable bedding is, described external screw-thread on described inner tubular body is restricted to the inner end region of described inner tubular body, the nut that the smooth exterior cylindrical surfaces that wherein diameter is not more than the minimum diameter in described thread head region extends to from described thread head region in the outside of described Outer tubular body constructs, and the feature of described cable bedding is, the inner surface of described Outer tubular body has the circumferential groove adjacent with the end of the described Outer tubular body receiving described inner tubular body, for annular seal is placed in service position, wherein said annular seal cooperates with the described exterior cylindrical surfaces of described inner tubular body, and wherein, before described cable bedding is mounted, described annular seal is arranged in the described circumferential groove of described Outer tubular body, or be positioned in the described exterior cylindrical surfaces adjacent with its thread head region of described inner tubular body.
2. cable bedding according to claim 1, wherein, described annular seal is elastic O-ring seal.
3. cable bedding according to claim 2, wherein, receive the end of the described Outer tubular body of described inner tubular body to have and import gradually tip, described importing gradually tip is arranged such that: when described inner tubular body is swirled in described Outer tubular body, and the O shape be carried in the described exterior cylindrical surfaces adjacent with its thread head region of described inner tubular body is enclosed and automatically will be extruded and be rolled in described Outer tubular body to be snapped in the service position in described circumferential groove.
4. cable bedding according to claim 3, wherein, described inner tubular body has the shallow circumferential groove be close to its thread head region, for partly receiving described seal with O ring part, prepares for being incorporated in its service position by described seal with O ring part.
5. cable bedding according to claim 1, wherein, the described internal whorl in described Outer tubular body extends beyond described circumferential groove.
6. cable bedding according to claim 1, wherein, described armouring clamping cone and cooperation clamping ring are configured to the armouring of different-thickness is clipped in its different position to axial.
7. cable bedding according to claim 6, wherein, each in described armouring clamping cone and clamping ring has the first cooperation tapered clamping surface of substantially conventional cone angle and the larger diameter end portion of described first tapered clamping surface of each in described cone and clamping ring has the second cooperation clamping surface outwards diverged from described first conical surface.
8. cable bedding according to claim 7, wherein, the cone angle of described first cooperation tapered clamping surface is from 15 degree to 25 degree, the axle of described first clamping surface and described cable bedding is made to form angle from 7.5 degree to 12.5 degree, and described second cooperation clamping surface all has cone angle between 60 degree and 90 degree in each case, the axle of described second clamping surface and described cable bedding is made to form angle from 30 degree to 45 degree.
9. cable bedding according to claim 1, wherein, described cable bedding has two-part structure, and wherein said clamping cone keeps captured relative to described inner tubular body, and described clamping ring at least temporarily keeps being trapped in described Outer tubular body.
10. cable bedding according to claim 1, wherein, described cable bedding comprises for being sealed in cable compressive seal and external compression seal on sheath and epitheca.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA201002967 | 2010-04-26 | ||
| ZA2010/02967 | 2010-04-26 | ||
| PCT/IB2011/000871 WO2011135425A1 (en) | 2010-04-26 | 2011-04-20 | Water resistant electrical cable gland |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103004045A CN103004045A (en) | 2013-03-27 |
| CN103004045B true CN103004045B (en) | 2015-08-12 |
Family
ID=44860944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180020698.8A Active CN103004045B (en) | 2010-04-26 | 2011-04-20 | Water resistant electrical cable gland |
Country Status (7)
| Country | Link |
|---|---|
| KR (1) | KR101606106B1 (en) |
| CN (1) | CN103004045B (en) |
| AU (1) | AU2011247014B2 (en) |
| GB (1) | GB2493312B (en) |
| SG (1) | SG184813A1 (en) |
| WO (1) | WO2011135425A1 (en) |
| ZA (1) | ZA201207474B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101428771B1 (en) * | 2013-03-29 | 2014-08-11 | 알트론 주식회사 | Cable gland |
| GB2523098B (en) * | 2014-02-12 | 2018-10-03 | Avc Ind Corp | Cable gland assembly |
| CN103915812A (en) * | 2014-04-08 | 2014-07-09 | 博太科防爆设备（上海）有限公司 | Non-armored band braid layer metal flat wire anti-explosion gland |
| US10923897B2 (en) | 2017-03-20 | 2021-02-16 | Pentair Flow Services Ag | Cable sealing gland |
| CN107171273B (en) * | 2017-05-31 | 2024-03-19 | 倍仕得电气科技（杭州）股份有限公司 | Cable fixing head |
| WO2018223036A1 (en) * | 2017-06-02 | 2018-12-06 | Nidec Motor Corporation | Wire seal for providing ingress protection |
| CN110994532B (en) * | 2019-12-23 | 2021-06-01 | 浙江佳乐科仪股份有限公司 | Cable joint plate for air conditioning unit control box |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4692563A (en) * | 1983-11-11 | 1987-09-08 | Westward Investments Limited | Cable gland embodying moisture-proof seal |
| GB2269711A (en) * | 1992-08-11 | 1994-02-16 | Hawke Cable Glands Ltd | Cable gland. |
| WO2001093396A1 (en) * | 2000-05-31 | 2001-12-06 | Electro-Win Limited | Electrical cable gland |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3014875B2 (en) * | 1992-11-06 | 2000-02-28 | 松下電工株式会社 | Switchboard |
-
2011
- 2011-04-20 CN CN201180020698.8A patent/CN103004045B/en active Active
- 2011-04-20 WO PCT/IB2011/000871 patent/WO2011135425A1/en active Application Filing
- 2011-04-20 KR KR1020127030721A patent/KR101606106B1/en active IP Right Grant
- 2011-04-20 SG SG2012074894A patent/SG184813A1/en unknown
- 2011-04-20 GB GB1220405.3A patent/GB2493312B/en active Active
- 2011-04-20 AU AU2011247014A patent/AU2011247014B2/en active Active
-
2012
- 2012-10-05 ZA ZA2012/07474A patent/ZA201207474B/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4692563A (en) * | 1983-11-11 | 1987-09-08 | Westward Investments Limited | Cable gland embodying moisture-proof seal |
| GB2269711A (en) * | 1992-08-11 | 1994-02-16 | Hawke Cable Glands Ltd | Cable gland. |
| WO2001093396A1 (en) * | 2000-05-31 | 2001-12-06 | Electro-Win Limited | Electrical cable gland |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2493312A (en) | 2013-01-30 |
| AU2011247014B2 (en) | 2015-04-23 |
| GB2493312B (en) | 2014-11-12 |
| KR101606106B1 (en) | 2016-03-24 |
| AU2011247014A1 (en) | 2012-12-06 |
| SG184813A1 (en) | 2012-11-29 |
| KR20130101981A (en) | 2013-09-16 |
| GB201220405D0 (en) | 2012-12-26 |
| ZA201207474B (en) | 2014-06-26 |
| CN103004045A (en) | 2013-03-27 |
| WO2011135425A1 (en) | 2011-11-03 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |