GB2079403A - Centering sleeve for shaft joints - Google Patents
Centering sleeve for shaft joints Download PDFInfo
- Publication number
- GB2079403A GB2079403A GB8118691A GB8118691A GB2079403A GB 2079403 A GB2079403 A GB 2079403A GB 8118691 A GB8118691 A GB 8118691A GB 8118691 A GB8118691 A GB 8118691A GB 2079403 A GB2079403 A GB 2079403A
- Authority
- GB
- United Kingdom
- Prior art keywords
- centering
- sleeve
- shaft
- centering sleeve
- resilient
- 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.)
- Withdrawn
Links
- 230000002787 reinforcement Effects 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 3
- 239000010959 steel Substances 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 6
- 239000013536 elastomeric material Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000000314 lubricant Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000012858 resilient material Substances 0.000 claims description 4
- 238000013016 damping Methods 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229920002994 synthetic fiber Polymers 0.000 claims description 2
- 238000010073 coating (rubber) Methods 0.000 abstract 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
A reinforced centering sleeve 3 is insertible in the receiving bore 1 in the end of one articulated joint shaft 2, into which sleeve a pin 4, which is rigid with the end of the other joint shaft, can be inserted concentrically, preferably via a resilient intermediate layer 8, the sleeve having as reinforcement two tubes 5, 6 inserted concentrically one within the other, between which tubes an elastomeric layer 7 is arranged. These tubes 5,6 consist of drawn sheet steel, and the inner tube and/or the resilient inner rubber coating 8 may be constructed to (form) a seal of the centering sleeve at its inner end. <IMAGE>
Description
SPECIFICATION
Centering sleeve for joint shaft connections
The invention relates to a centering sleeve provided with a reinforcement, which can be inserted into the receiving bore in an end of one articulated joint shaft, into which (sleeve) a pin, which is rigidly connected with the end of the other articulated joint shaft, can be inserted concentrically via a resilient intermediate layer.
Resilient shaft couplings usually have connected with them centering devices for receiving and centering one or both of the shaft ends which are connected together by the shaft coupling. In practice, such centering devices often consist of separate centering sleeves of rigid material, such as metal, which can be inserted for example into receiving bores in the end of one shaft or in the hub portion of the three-arm flange in the middle of the shaft coupling and can be positively secured therein as a force fit. The end of the second shaft is inserted into the centering sleeve, so that the centering sleeve itself serves at the same time as the bearing therefor.
In orderto improve their radial damping capacity or to improve the radial angular mobility of both shafts with respect to each other, it is usual to coat the inner surfaces of the sleeves with resilient materials. These resilient materials advantageously consist of elastomers or synthetic materials having special anti-friction properties, or the coatings are provided, for example, according to the DE-PS 2435 027, with circumferentially extending recesses for the reception of lubricants. The rubber layer may be provided with a sealing lip for externally sealing the bearing portion of the shaft end.
The rigid outer housing part of the centering sleeve serves for adjusting the desired characteristic of the sleeve according to the required conditions, and it must at the same time produce a sufficiently firm press fit of the centering sleeve in the receiving bore. In order, however, that the required firm positive connection of the two parts with each other should actually take place, the corresponding outer surfaces of both connecting parts must be accurately proportioned to match each other. Both the outer circumferential surface of the sleeve and also the inner surface of the receiving bore must be machined for size for example by centreless grinding. The production of such accurately dimensioned parts, however, considerably increases the cost of manufacture of the centering sleeve including the corresponding receiving bore.
The problem of the present invention is therefore to provide centering sleeves for articulated joints which on the one hand completely fulfil the functions of a centering sleeve of former construction, but which on the other hand, without costly machining of their outer surfaces and the corresponding receiving bores, ensure a firm and durable positive force fit with easy assembly.
According to the invention this problem is solved by a centering sleeve with two tubular sections inserted concentrically one within the other for reinforcing it, between which is arranged a resilient intermediate layer. The outer circumferential surface of the tubular section forms the outer surface of the entire centering sleeve. Due to the outer diameter of this outer tubular section being slightly greater than the inside diameter of the receiving bore, during the assembly of the centering sleeve in the receiving bore, the outer sleeve is slightly compressed and the resilient intermediate layer, while being subjected to shear stress in the opposite direction, is resiliently deformed to such an extent that its resilience urges the outer reinforcing tube firmly into the bore and produces a firm force fit thereof in the bore.The outer metal casing prevents damage of the centering sleeve during the assembly (operation).
Both the inner and also the outer reinforcing tubes now no longer need be expensively machined as precision components. They accordingly preferably consist of simple to produce drawn sheet steel. The inner surface of the inner reinforcing tube is coated resiliently in the usual manner for the reception of the end of the shaft, and a sealing lip is preferably vulcanised on its outer end, the housing of which may be formed by the outer metal tube.
In accordance with the invention the centering sleeve may moreover be closed at its inner end. This may be effected advantageously by making the resilient inner coating and/or the inner reinforcing tube in the form of a cup. In this way a container which is sealed both externally and internally is formed for the reception of the lubricant necessary for lubricating the end of the shaft.
The drawing illustrates a construction embodiment of the invention and shows a longitudinal section through the centering sleeve.
In the drawing, 1 is the receiving bore in the end of the first shaft 2, into which the centering sleeve 3 is pressed by a spigot 4 on the end of the second shaft,
It consists of an outer reinforcement part 5 and an inner reinforcement part 6 in the form of two tubular sections of drawn sheet metal inserted coaxially one within the other and a resilient intermediate layer 7 located between them. The inner surface of the sleeve is coated with a resilient layer 8, and vulcanised on the outer end of the latter is a sealing lip 9 for the external sealing of the second shaft. The inner reinforcement tube 6 and the inner coating 8 form at the inner end 10 a seal of the centering sleeve 3.
1. Centering assembly for a shaft coupling comprising a centering sleeve fitted in a bore at the end of one of the shafts and a pin rigidly connected to the end of the other shaft and received coaxiallywithin the centering sleeve wherein the centering sleeve comprises two coaxial tubes with a layer of elastomeric material between them.
2. Centering assembly as claimed in claim 1 in which the tubes are of drawn sheet metal.
3. Centering assembly as claimed in claim 1 or 2 in which the inner of the two tubes is formed with a closed inner end.
4. Centering assembly as claimed in claim 1,2 or 3 in which the inner surface of the inner tube is
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (6)
1. Centering assembly for a shaft coupling comprising a centering sleeve fitted in a bore at the end of one of the shafts and a pin rigidly connected to the end of the other shaft and received coaxiallywithin the centering sleeve wherein the centering sleeve comprises two coaxial tubes with a layer of elastomeric material between them.
2. Centering assembly as claimed in claim 1 in which the tubes are of drawn sheet metal.
3. Centering assembly as claimed in claim 1 or 2 in which the inner of the two tubes is formed with a closed inner end.
4. Centering assembly as claimed in claim 1,2 or 3 in which the inner surface of the inner tube is coated with a layer of elastomeric material.
5. Centering assembly as claimed in claim 4 in which a sealing lip is vulcanized on the outer end of the said layer of elastomeric material.
6. Centering assembly as claimed in claim 4 or 5 in which the said layer of elastomeric material is extended across the inner end of the inner tube to form a seal.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803025181 DE3025181A1 (en) | 1980-07-03 | 1980-07-03 | "CENTERING SLEEVE FOR JOINT SHAFT CONNECTIONS" |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2079403A true GB2079403A (en) | 1982-01-20 |
Family
ID=6106309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8118691A Withdrawn GB2079403A (en) | 1980-07-03 | 1981-06-17 | Centering sleeve for shaft joints |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE3025181A1 (en) |
| GB (1) | GB2079403A (en) |
| IT (1) | IT1137020B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6068555A (en) * | 1995-08-24 | 2000-05-30 | Sgf Suddeutsche Gelenkscheibenfabrik Gmbh & Co. Kg | Vibration damping, torsionally elastic shaft coupling, especially for a motor vehicle power train |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006012758B4 (en) * | 2006-03-17 | 2014-09-04 | Carl Freudenberg Kg | Joint disc for the torque-transmitting connection of two elements and arrangement |
-
1980
- 1980-07-03 DE DE19803025181 patent/DE3025181A1/en not_active Withdrawn
-
1981
- 1981-05-22 IT IT21908/81A patent/IT1137020B/en active
- 1981-06-17 GB GB8118691A patent/GB2079403A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6068555A (en) * | 1995-08-24 | 2000-05-30 | Sgf Suddeutsche Gelenkscheibenfabrik Gmbh & Co. Kg | Vibration damping, torsionally elastic shaft coupling, especially for a motor vehicle power train |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1137020B (en) | 1986-09-03 |
| DE3025181A1 (en) | 1982-01-21 |
| IT8121908A0 (en) | 1981-05-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |