GB2055957A - Articulated joints - Google Patents
Articulated joints Download PDFInfo
- Publication number
- GB2055957A GB2055957A GB8023220A GB8023220A GB2055957A GB 2055957 A GB2055957 A GB 2055957A GB 8023220 A GB8023220 A GB 8023220A GB 8023220 A GB8023220 A GB 8023220A GB 2055957 A GB2055957 A GB 2055957A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spherical
- bush
- stud
- bearing
- opening
- 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 6
- 238000005304 joining Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- 238000003754 machining Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0614—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part of the joint being open on two sides
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
An articulated joint of low friction and wear characteristics and high load resistance characteristics and a method of producing such L-shaped rod end bearing at low cost. In producing the joint, a spherical steel bearing member 1 is joined to a head of a bolt 2 by friction welding 5 to form a stud, and a spherical portion of the stud is slidably fitted in a part- spherical bush 6 including a self- lubricating bearing layer having a steel backing. Then the studded bush has its spherical portion force fitted in an opening formed in a rod 10 and secured at its outer circumferential surface to the edge of the opening. <IMAGE>
Description
SPECIFICATION
L-shaped rod end bearing and method of producing same
This invention relates to an articulated joint, e.g. forming an L-shaped rod and bearing, and a method of producing same.
There are several types of conventional rod end bearing forjournally receiving and connecting two moving members of various machines or apparatuses capable of slidably receiving both rotational and swingable motion of one member relative to the other member in a wide three dimensional angle.
Typically, such a rod end bearing is composed of a rod attached to said one moving member and is made by machining a cast piece, forged block or a bar stock and a ball ended stud bolt to be connected to the other moving member which is also made of a cast piece or the like.
The rod is arranged with an annular opening into which the ball of said stud bolt is slidably inserted through an annular discrete slide bearing.
In the conventional method, a ball ended stud, or merely referred to as a ball stud, has been made as a single piece article by machining a cast piece; accordingly drawbacks are encountered such as high production cost, troublesome replacement for worm or damaged parts and difficulty in performing uniform hardening of the integrally formed ball portion.
Insertion of the assembled ball and annular slide bearing has been made by forced fitting or by means of resilient engagement.
As the solid annual bearing has been inserted into the opening under direct contact with hard annular inner surface of the opening, problems are also encountered of poor alignment, insufficient heat conductivity and seizure between the slide bearing body and the inner surface of the opening.
According to one aspect of the present invention an articulated joint comprises a stud including a spherical bearing member, a partspherical bush including a metal backing layer and a self-lubricating bearing layer for slidably holding said spherical bearing member therein, and a rod formed with an opening for securely holding at its edge an outer circumferential surface of said partspherical bush after the part spherical bush is force fitted in said opening.
Specifically the joint may comprise a stud including a spherical steel bearing member, a bolt joined at its head to said spherical steel bearing member by friction welding, a part-spherical bush including a steel backing layer and a self-' lubricating bearing layer for slidably holding said spherical steel bearing member therein and a rod formed with an opening for securely holding at its edge an outer circumferential surface of said partspherical bush after the part-spherical bush is force fitted in said opening.
According to another aspect of the present invention a method of producing an articulated joint comprises the steps of joining a spherical metal bearing member to a head of a bolt to form a stud having a spherical portion, slidably fitting.
said spherical portion of said stud in a partspherical bush including a metal backing layer and a self-lubricating bearing layer, to form a studded part-spherical bush, and force fitting said studded spherical bush in an opening formed in a rod and securely holding at its edge an outer circumferential surface of said spherical bush.
Specifically the method may comprise the steps of joining a spherical steel bearing member to a head of a bolt by friction welding to form a stud having a spherical portion, slidably fitting said spherical portion of said stud in a part-spherical bush including a steel backing layer and a selflubricating bearing layer, to form a studded partspherical bush, and force fitting said studded spherical bush in an opening formed in a rod and securely holding at its edge an outer circumferential surface of said spherical bush.
According to these aspects of the invention it is possible to provide an L-shaped rod end bearing and a method of producing same wherein the bearing has low friction and wear characteristics and has high load resistant characteristics.
The bearing can be produced at low cost and have improved self-aligning capabilities.
The invention may be carried into practice in various ways but one specific embodiment will now be described by way of example with reference to the accompanying drawings in which: FIGURE 1 is a vertical sectional front view of a self-lubricating bearing bush slidably fitted over a spherical steel member of a stud;
FIGURE 2 is a front view of a rod; and
FIGURE 3 is a front view of an articulated joint formed by joining the parts of Figures 1 and 2.
FIGURE 1 shows a stud 4 obtained by joining a spherical steel member 1 to a hexagonal head 3 of a threaded bolt 2 by friction welding forming a weld 5. The spherical steel member 1 is slidably fitted in a part-spherical bush 6 comprising a steel backing layer 7 and a self-lubricating bearing layer 8. More specifically, the self-lubricating bearing layer 8 is what is generally referred to as a DU dry bearing bush of the self-lubrication type obtained by impregnating a porous bronze layer with a mixture of PTFE and lead.
The bearing bush 6, having the spherical steel member 1 slidably fitted therein, is force fitted in an opening 11 formed in a rod 10 shown in Figure 2 so that an outer circumferential surface 9 of the bearing bush 6 is firmly secured to the edge of the opening 11, to provide an L-shaped rod end bearing shown in Figure 3.
In the embodiment of the invention shown and described, the self-lubricating bearing bush has been described as being a DU dry bearing bush.
However, the invention is not limited to this specific form of the bearing bush, and any known self-lubricating bearing bush having a steel backing layer may be used.
By virtue of the feature that the bearing is provided with a bearing bush including a selflubricating layer of low friction and wear characteristics and a steel backing layer of improved load resistance characteristics, the bearing has greatly improved physical characteristics and mechanical strength.
Moreover, the combination of a self-lubricating, spherical bearing bush having a steel backing layer of low friction and wear characteristics with a spherical steel bearing member of high precision enables improved self-aligning to be obtained.
The method of producing the L-shaped rod end bearing according to the invention is very simple as described hereinabove and enables the Lshaped rod end bearing to be produced at low cost.
Claims (4)
1. An articulated joint comprising a stud including a spherical bearing member, a partspherical bush including a metal backing layer and a self-lubricating bearing layer for slidably holding said spherical bearing member therein and a rod formed with an opening for securely holding at its edge an outer circumferential surface of said partspherical bush after the part-spherical bush is force fitted in said opening.
2. An articulated joint comprising a stud including a spherical steel bearing member, a bolt joined at its head to said spherical steel bearing
member by friction welding, a part-spherical bush including a steel backing layer and a selflubricating bearing layer for slidably holding said spherical steel bearing member therein, and a rod formed with an opening for securely holding at its edge an outer circumferential surface of said partspherical bush after the part spherical bush is force fitted in said opening.
3. A method of producing an articulated joint comprising the steps of joining a spherical metal bearing member to a head of a bolt to form a stud having a spherical portion slidably fitting said spherical portion of said stud in a part-spherical bush including a metal backing layer and a selflubricating bearing layer, to form a studded partspherical bush, and force fitting said studded spherical bush in an opening formed in a rod and securely holding at its edge an outer circumferential surface of said spherical bush.
4. A method of producing an articulated joint comprising the steps of joining a spherical steel bearing member to a head of a bolt by friction welding to form a stud having a spherical portion slidably fitting said spherical portion, of said stud in a part-spherical bush including a steel backing layer and a self-lubricating bearing layer, to form a studded part-spherical bush, and force fitting said studded spherical bush in an opening formed in a rod and securely holding at its edge an outer circumferential surface of said spherical bush.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979098349U JPS5621622U (en) | 1979-07-17 | 1979-07-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2055957A true GB2055957A (en) | 1981-03-11 |
| GB2055957B GB2055957B (en) | 1983-03-23 |
Family
ID=14217415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8023220A Expired GB2055957B (en) | 1979-07-17 | 1980-07-16 | Articulated joints |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5621622U (en) |
| DE (1) | DE3025471A1 (en) |
| FR (1) | FR2461844B1 (en) |
| GB (1) | GB2055957B (en) |
| IT (1) | IT1166404B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE842431C (en) * | 1942-03-11 | 1952-06-26 | Ehrenreich & Cie A | Spatially movable joint, especially for steering rods |
| FR1042216A (en) * | 1951-09-15 | 1953-10-29 | Ball joint made by pressing, and method of manufacturing | |
| FR1535570A (en) * | 1967-06-20 | 1968-08-09 | Advanced self-centering bearing and method for its manufacture | |
| DE7020871U (en) * | 1970-06-04 | 1970-09-03 | Skf Kugellagerfabriken Gmbh | BALL JOINT. |
| US3656821A (en) * | 1970-08-05 | 1972-04-18 | Heim Universal Corp | Self-aligning bearing |
| US3965554A (en) * | 1973-03-01 | 1976-06-29 | The Columbus Auto Parts Company | Method of producing ball joints |
| US3988818A (en) * | 1975-07-07 | 1976-11-02 | Ford Motor Company | Tie rod end |
| JPS5323901A (en) * | 1976-08-12 | 1978-03-06 | Sumitomo Chem Co Ltd | Preparation of organic halides |
-
1979
- 1979-07-17 JP JP1979098349U patent/JPS5621622U/ja active Pending
-
1980
- 1980-07-04 DE DE19803025471 patent/DE3025471A1/en not_active Ceased
- 1980-07-09 FR FR8015278A patent/FR2461844B1/en not_active Expired
- 1980-07-15 IT IT8049244A patent/IT1166404B/en active
- 1980-07-16 GB GB8023220A patent/GB2055957B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2055957B (en) | 1983-03-23 |
| IT1166404B (en) | 1987-04-29 |
| FR2461844A1 (en) | 1981-02-06 |
| IT8049244A0 (en) | 1980-07-15 |
| JPS5621622U (en) | 1981-02-26 |
| DE3025471A1 (en) | 1981-02-05 |
| FR2461844B1 (en) | 1987-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0962676B1 (en) | Bearing assembly with spherical bearing surfaces | |
| US3389927A (en) | Joint assembly | |
| US4688808A (en) | Composite sliding structure for piston body | |
| US20030072609A1 (en) | Bearing shell for ball-and-socket joints or spherical bushing joints | |
| KR20150056658A (en) | Ball joint with improved upper bearing and method of construction thereof | |
| US2754141A (en) | Ball and socket joints | |
| EP0828951A1 (en) | Connector with insert molded captive ball | |
| US5463811A (en) | Spherical bearing and method of assembling a spherical bearing | |
| US3656821A (en) | Self-aligning bearing | |
| US6343889B1 (en) | Split-socket ball joint | |
| US3655249A (en) | Package sleeve bearing | |
| JPS58173075A (en) | Production of oblique plate assembly | |
| US5496125A (en) | Compression pre-loaded ball and socket joint assembly | |
| DE3315658C2 (en) | Ball joint, especially tie rod joint | |
| US20060062502A1 (en) | Solid lubrication of rod end bearings | |
| KR830002244B1 (en) | Method of manufacturing a swash plate assembly | |
| US3259408A (en) | Ball joint | |
| US3614182A (en) | Spherical bearing assembly | |
| US3883256A (en) | Ball and socket joints which do not require servicing and have an outer jacket of a thermoplastic, and process for their manufacture | |
| US4819517A (en) | Selected bearing couple for a rock bit journal and method for making same | |
| US3582157A (en) | Bearing assembly having an interference-fit bearing surface of synthetic resin material | |
| GB2055957A (en) | Articulated joints | |
| CN111819367B (en) | Improved socket assembly and method of making same | |
| US3361458A (en) | Double wedge eccentric ball joint | |
| US3759589A (en) | Rod end bearing assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19960716 |