GB2396674A - Hydraulic Fittings - Google Patents
Hydraulic Fittings Download PDFInfo
- Publication number
- GB2396674A GB2396674A GB0230085A GB0230085A GB2396674A GB 2396674 A GB2396674 A GB 2396674A GB 0230085 A GB0230085 A GB 0230085A GB 0230085 A GB0230085 A GB 0230085A GB 2396674 A GB2396674 A GB 2396674A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sleeve
- hose
- pipe
- abutment
- shoulder
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members
- F16L33/207—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
- F16L33/2071—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
- F16L33/2073—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member
- F16L33/2076—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member by plastic deformation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints That Cut Off Fluids, And Hose Joints (AREA)
Abstract
A method of joining a flexible hydraulic hose (11) to a rigid metal pipe (10) by; <SL> <LI>a) forming a raised shoulder (13) and a nipple end portion (14) on the pipe (10), <LI>b) forming an annular pipe sleeve (12) with an internal bore to receive the rigid pipe and flexible hose (11), the sleeve having a first abutment (16) for contact with the raised shoulder (13) of the metal pipe and a second abutment (18) for contact with the flexible hose (11), <LI>c)placing the sleeve (12) over the nipple end portion (14) and pushing the free end of the hose into the sleeve so that the nipple end portion enters the hose and the hose contacts the second abutment (18), <LI>d)crimping (21,22) the sleeve onto the hose, <LI>e)forming the sleeve end (19) into contact with the side (20) of the shoulder (13) to draw the abutment (16) with the shoulder (17) sealing the hose to the pipe. </SL>
Description
HYDRAULIC FITTINGS
This invention relates to hydraulic fittings and in particular to fittings for joining flexible hoses to rigid pipes and methods of assembling such fittings.
It is an object of the present invention to provide a simple and low cost method for joining a flexible hydraulic hose to a rigid metal pipe.
Thus according to the present invention there is provided a method of joining a flexible hydraulic hose to a rigid metal pipe comprising: forming a raised shoulder on the rigid pipe to define a nipple end portion of the pipe forward of the raised shoulder; forming an annular pipe sleeve with an internal bore therethrough to receive the rigid pipe and flexible hose, the sleeve having a first abutment adjacent one end of the sleeve for contact with one side of the raised shoulder and a second abutment facing in the opposite direction to the first abutment for contact with the end of the flexible hose; placing the sleeve over the nipple end portion of the rigid pipe with the first abutment adjacent said one side of the shoulder; pushing the free end of the flexible hose into the sleeve so that the nipple end portion of the rigid pipe enters the bore of the hose and the free end of the hose contacts the second abutment; crimping the sleeve onto the hose, and
forming said one end of the sleeve into contact with the other side of the shoulder to draw the first abutment into contact with said one side of the shoulder to complete the sealing of the hose to the pipe.
The principal advantage of the above method are that no complex forming operations of the sleeve are required during assembly of the joint only the simple crimping of the sleeve over the hose and the forming of the sleeve into contact with the other side of the pipe shoulder.
These simple metal forming operations can be performed without complex tools making the method particularly suited to low volume production where the cost of complex tooling cannot be justified.
The invention also provides a jointing arrangement between a flexible hydraulic hose and a rigid metal pipe in which: the rigid pipe has a raised shoulder formed thereon to define a nipple end portion of the pipe forward of the raised shoulder; an annular pipe sleeve with an internal bore therethrough receives the rigid pipe and flexible hose therein, the sleeve having a first abutment adjacent one end of the sleeve which contacts one side of the raised shoulder and second abutment facing in the opposite direction to the first abutment which contacts the end of the flexible hose with the nipple end portion of the pipe in the hose bore; the sleeve is crimped onto the hose, and said one end of the sleeve is formed into contact with the other side of the shoulder to draw the first abutment into contact with said one side of the shoulder to complete the sealing of the hose to the pipe.
The present invention will now be described, by way of example only with reference to the accompanying drawings in which: Figures I and 2 show the rigid pipe end and jointing sleeve respectively of the jointing arrangement of the present invention; Figure 3 shows the jointing arrangement partly assembled, and Figure 4 shows the jointing arrangement fully assembled.
Referring to the drawings the jointing arrangement in accordance with the present invention comprises three basic components, the rigid metal pipe 10, the flexible hydraulic hose 1 1 and the jointing sleeve 12.
The rigid metal pipe 10 has formed thereon a raised shoulder 13 which defines forward of the shoulder a nipple end portion 14 for entry into the bore 15 of the flexible hose 11. As can be seen from the drawings, the nipple portion is of a reduced diameter compared to the normal external diameter of the rigid pipe 10 but this is not necessarily the case and depends on the relative size of the hose bore and the rigid pipe external diameter.
The jointing sleeve 12 is provided with a first annular abutment 16 for contact with one side 17 of shoulder 13. A second abutment 18 is formed on sleeve 12 which faces in the opposite direction to abutment 17 and which is contacted by the end of hose 11.
The end portion 19 of sleeve 12 which initially overhangs the shoulder 13 on the rigid pipe 10 is eventually formed down onto the external surface of tube 10 to contact the side 20 of shoulder 13 to in turn draw the sleeve 12 into contact with the side 17 of shoulder 13.
The cylindrical sleeve 12 is also crimped at 21 and 22 onto hose 11 to seal the sleeve to the hose.
The jointing fitting described above is assembled as follows.
Firstly the raised shoulder 13 is formed on the rigid pipe 10 together with the reduced diameter nipple end portion 14 of the rigid pipe.
The sleeve 12 is also formed with its first and second abutments 16 and 18 respectively for contact with the shoulder 13 and the end of hose 1 1.
The sleeve 12 is then placed over the end nipple portion 14 of pipe 10 with the first abutment 16 in contact with the side 17 or shoulder 13.
The hose 11 is then pushed into the sleeve 12 so that the nipple portion 14 enters its bore and the end of the hose contacts the second abutment 18 of the sleeve.
The sleeve 12 is then crimped onto the hose I I and the end portion 19 of the sleeve is formed onto the pipe 10 to contact the other side 20 of the shoulder 13 and thus draw the first abutment 16 on the sleeve 12 into sealing contact with the side 17 of the shoulder thus completing the sealing of the hose to the pipe.
As will be appreciated the above jointing arrangement is a particularly simple and efficient way to join a rigid pipe to a flexible hose and does not require the provision of any expensive metal forming equipment since the crimping of the sleeve to the hose and the forming of the sleeve onto the tube can be performed by inexpensive equipment.
Claims (2)
1) A method of joining a flexible hydraulic hose to a rigid metal pipe comprising - forming a raised shoulder on the rigid pipe to define a nipple end portion of the pipe forward of the raised shoulder; - forming an annular pipe sleeve with an internal bore therethrough to receive the rigid pipe and flexible hose, the sleeve having a first abutment adjacent one end of the sleeve for contact with one side of the raised shoulder and a second abutment facing in the opposite direction to the first abutment for contact with the end of the flexible hose; placing the sleeve over the nipple end portion of the rigid pipe with the first abutment adjacent said one side of the shoulder; pushing the free end of the flexible hose into the sleeve so that the nipple end portion of the rigid pipe enters the bore of the hose and the free end of the hose contacts the second abutment; crimping the sleeve onto the hose, and forming said one end of the sleeve into contact with the other side of the shoulder to draw the first abutment into contact with said one side of the shoulder to complete the sealing of the hose to the pipe.
2) A flexible hydraulic hose and a rigid metal pipe in which: the rigid pipe has a raised shoulder formed thereon to define a nipple end portion of the pipe forward of the raised shoulder;
an annular pipe sleeve with an internal bore therethrough receives the rigid pipe and flexible hose therein, the sleeve having a first abutment adjacent one end of the sleeve which contacts one side of the raised shoulder and second abutment facing in the opposite direction to the first abutment which contacts the end of the flexible hose with the nipple end portion of the pipe in the hose bore; the sleeve is crimped onto the hose, and said one end of the sleeve is formed into contact with the other side of the shoulder to draw the first abutment into contact with said one side of the shoulder to complete the sealing of the hose to the pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0230085A GB2396674B (en) | 2002-12-24 | 2002-12-24 | Hydraulic fittings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0230085A GB2396674B (en) | 2002-12-24 | 2002-12-24 | Hydraulic fittings |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0230085D0 GB0230085D0 (en) | 2003-01-29 |
| GB2396674A true GB2396674A (en) | 2004-06-30 |
| GB2396674B GB2396674B (en) | 2005-03-09 |
Family
ID=9950370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0230085A Expired - Fee Related GB2396674B (en) | 2002-12-24 | 2002-12-24 | Hydraulic fittings |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2396674B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3416702A1 (en) * | 1984-05-05 | 1985-11-21 | FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt | Permanent connection between pipes, e.g. for hydraulic brake systems |
| US4863197A (en) * | 1988-03-03 | 1989-09-05 | Ingersol-Rand Company | High-pressure end fitting |
| GB2311111A (en) * | 1996-03-13 | 1997-09-17 | Hitachi Cable | Hose coupling and method of making such |
| GB2336636A (en) * | 1998-04-22 | 1999-10-27 | Automotive Products Plc | Brake pipe assembly |
| WO2002044606A1 (en) * | 2000-11-30 | 2002-06-06 | Tebo, S.A. De C.V. | Tube insert for hoses of hydraulic or pneumatic systems |
-
2002
- 2002-12-24 GB GB0230085A patent/GB2396674B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3416702A1 (en) * | 1984-05-05 | 1985-11-21 | FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt | Permanent connection between pipes, e.g. for hydraulic brake systems |
| US4863197A (en) * | 1988-03-03 | 1989-09-05 | Ingersol-Rand Company | High-pressure end fitting |
| GB2311111A (en) * | 1996-03-13 | 1997-09-17 | Hitachi Cable | Hose coupling and method of making such |
| GB2336636A (en) * | 1998-04-22 | 1999-10-27 | Automotive Products Plc | Brake pipe assembly |
| WO2002044606A1 (en) * | 2000-11-30 | 2002-06-06 | Tebo, S.A. De C.V. | Tube insert for hoses of hydraulic or pneumatic systems |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0230085D0 (en) | 2003-01-29 |
| GB2396674B (en) | 2005-03-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20141224 |