GB2103324A - Circlip with axially extending spacer - Google Patents
Circlip with axially extending spacer Download PDFInfo
- Publication number
- GB2103324A GB2103324A GB08220666A GB8220666A GB2103324A GB 2103324 A GB2103324 A GB 2103324A GB 08220666 A GB08220666 A GB 08220666A GB 8220666 A GB8220666 A GB 8220666A GB 2103324 A GB2103324 A GB 2103324A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circlip
- elongate element
- shaft
- extends
- bearing
- 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- Withdrawn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
- 125000006850 spacer group Chemical group 0.000 title abstract description 4
- 238000009434 installation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010959 steel 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
- F16B21/16—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft
-
- 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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/063—Fixing them on the shaft
-
- 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- 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
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
- F16C2380/27—Motor coupled with a gear, e.g. worm gears
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
A circlip (10) is radially resiliently deformable outwardly or inwardly to fit around a shaft (13) or in a bore of a housing, respectively, and can be slid along until the inwardly or outwardly directed locating portion (12) engages an annular groove (14), the part-cylindrical portion (11) serving as a spacer. <IMAGE>
Description
j
SPECIFICATION
An elongate element for use in axially locating and spacing a component in a structure
This invention concerns an elongate element for use in axially locating and spacing a component in a structure, for example, a rolling bearing on a shaft or in a bore of a housing.
Rolling bearings are often held against movement in one axial direction by a circlip. A circlip is a spring washer in the form of an incomplete circle. It is mounted in an annular groove in a shaft or in a bore of a housing by opening or closing it and then allowing it to resile into the groove. To facilitate opening and closing of the circlip, the adjacent ends can have holes and a tool like a pair of pliers is used to engage the holes.
A circlip is short axially and usually is suitable only for installation in a groove to which access can be gained quite easily although instances arise where fitting a circlip can be difficult if not impossible. In some cases the arrangement of components in a structure means that the circlip is fitted blind-cannot be seen when in place and the danger arises that the circlip may not in fact engage in the groove.
To increase the axial space between the circlip and the component, such as a bearing, a cylindrical sleeve is sometimes used between the circlip and the component. This does mean however that two members are required which increases the cost and complicates installation.
Specification U.S. 1290180 (Halbleib) discloses an axial spacer which comprises a corrugated strip of sheet metal bent about an axis parallel to the length of the corrugations so that it is generally circular with its ends adjacent to each other. However this spacer has no means for holding a component against movement in one axial direction.
The subject of the invention is an elongate element for use in axially locating and spacing a component in a structure, which element
has a simple construction and can be installed
in places to which access cannot easily be gained.
The invention provides an elongate element which, in cross-section, 'extends as the major part of a circle, and comprises a first portion which extends longitudinally along the outer surface of a cylinder and a second portion which extends from one end of the first portion and radially inwardly or outwardly, the element being radially resiliently deformable.
With such a construction, the groove to be engaged by the second portion can be positioned in a more convenient and accessible place. Because the element is a single article the production and storage costs are kept low and the risk of incorrect installation is minimised.
When used, for example, to secure a component on a shaft having an annular groove, the elongate element, which has a radially inwardly extending second portion, is firstly opened and placed around the shaft and secondly is pushed axially along the shaft until the second portion engages the annular groove. To facilitate this kind of fitting the elongate element in cross-section preferably extends through an angle of no less than 230 .
The second portion, which extends radially inwardly or outwardly, may extend at an angle of 90 to the first portion or may extend obliquely at some intermediate angle such as 45 . The configuration in which the second portion extends obliquely is preferred since the second portion springs more easily into the annular groove and the elongate element does not have to be so greatly resiliently deformed to get it onto a shaft or into a bore of a housing.
An embodiment of the invention will now be described by way of example, reference being made to the accompanying drawings, of which:
Figure 1 is a longitudinal section on I-I of the elongate element shown in Fig. 2;
Figure 2 is an end view on II of the elongate element shown in Fig. 1; and
Figure 3 is a longitudinal section of an electric motor in which the elongate element of Figs. 1 and 2 has been used.
Figs. 1 and 2 show an elongate element 10 for use in axially locating and spacing a component in a structure, which element in cross-section (Fig. 2) extends as the major part of a circle. The element 10 comprises a first portion 11, which extends longitudinally along the outer surface of a cylinder, and a second portion 1 2 which extends from one end of the first portion and obliquely radially inwardly. The second portion 1 2 is in the form of a truncated cone except that it does not extend all the way around the conical surface.
This embodiment of an elongate element
10 according to the invention is intended to be mounted on a shaft 1 3 (shown in chain dot) with the second portion 1 2 of the element engaging in an annular groove 14 in the shaft. The elongate element 10 is made, for example, from sheet metal such as steel and is radially resiliently deformable. To enable the elongate element 10 to be readily opened and allowed to close around the shaft 13, it is made so that it, in cross-section, extends through an angle a of 230 .
Fig. 3 shows an electric motor mounted in a housing 1 5 having two end plates 1 6 and 1 7. The rotor of the electric motor is mounted on a shaft 1 8 which extends in the housing 1 5 and is mounted for rotation by a bearing 1 9 secured to housing end plate 1 6 and by a bearing 20 secured to housing end plate 1 7.
The bearing 20 is a single-row deep-groove ball bearing comprising inner and outer race rings. The outer race ring abuts against a shoulder of the end plate 1 7. The inner race ring is fixed axially on the shaft 18 between a circlip 21 engaging in an annular groove 22 in the shaft 1 8 and an elongate element 23 according to the invention having an obliquely radially inwardly extending second portion 24 engaging in an annular groove 25 in the shaft
18.
The end plate 1 7 has an axial extension 26 into which extends a part of the shaft 1 8 having a worm 27 and which has an opening 28 for a worm wheel (not shown) to engage the worm.
During assembly of the electric motor, the bearing 20 is positioned in the end plate 1 7.
The shaft 18 having the circlip 21 engaged in the groove 22 is then inserted from the left hand end (looking at the drawing of Fig. 3) into the bearing 20 until the circlip 21 abuts the inner race ring of the bearing. Then the elongate element 23 according to the invention is opened, inserted through the opening 28, and allowed to close around the shaft 1 8.
The element 23 is then pushed axially along the shaft 1 8 from right to left until it abuts the inner race ring of the bearing 20 and the second portion 24 engages in the groove 25.
The bearing 20 is thus fixed axially with respect to the shaft 1 8.
In the illustrated and described embodiment, the elongate element 10, 23 is used to axially locate and space a component on a shaft. To axially locate and space a component in a bore of a housing, an elongate element according to the invention will be used having a second portion extending radially outwardly.
Claims (4)
1. An elongate element which, in crosssection, extends as the major part of a circle, and comprises a first portion which extends longitudinally along the outer surface of a cylinder and a second portion which extends from one end of the first portion and radially inwardly or outwardly, the element being radially resiliently deformabie.
2. An elongate element as claimed in
Claim 1, wherein in cross-seciion it extends through an angle of no less than 230 .
3. An elongate element as claimed in
Claim 1 or 2, wherein the second portion extends obliquely "to the first portion.
4. An elongate element substantially as herein described with reference to and as shown in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8121936 | 1981-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2103324A true GB2103324A (en) | 1983-02-16 |
Family
ID=6729791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08220666A Withdrawn GB2103324A (en) | 1981-07-25 | 1982-07-16 | Circlip with axially extending spacer |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2510208B1 (en) |
| GB (1) | GB2103324A (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR807191A (en) * | 1935-06-29 | 1937-01-06 | Packard Motor Car Co | Assembly of ball bearings and assembly of bearings comprising such an assembly |
| FR1124542A (en) * | 1955-04-06 | 1956-10-12 | Anciens Etablissements Panhard | Device for holding a cylindrical part in a bore |
| AT213162B (en) * | 1958-08-07 | 1961-01-25 | Zahnradfabrik Friedrichshafen | Axial guidance for rolling bearings and shaft journals |
| GB992351A (en) * | 1963-01-16 | 1965-05-19 | Ft Products Ltd | Improvements in and relating to fasteners which may be used as stops on shafts |
| DE2364275C3 (en) * | 1973-12-22 | 1979-11-29 | Bayerische Motoren Werke Ag, 8000 Muenchen | Arrangement for preventing relative movements between mutually braced, frictionally interacting components |
| DE2459944A1 (en) * | 1974-12-18 | 1976-06-24 | Standard Elektrik Lorenz Ag | Radially compressed sleeve end - produces location groove for axially securing shaft in bearing |
-
1982
- 1982-07-16 GB GB08220666A patent/GB2103324A/en not_active Withdrawn
- 1982-07-22 FR FR8212822A patent/FR2510208B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2510208B1 (en) | 1986-09-19 |
| FR2510208A1 (en) | 1983-01-28 |
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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) |