AU735452B2 - Cap for snapping into a recess - Google Patents
Cap for snapping into a recess Download PDFInfo
- Publication number
- AU735452B2 AU735452B2 AU26088/99A AU2608899A AU735452B2 AU 735452 B2 AU735452 B2 AU 735452B2 AU 26088/99 A AU26088/99 A AU 26088/99A AU 2608899 A AU2608899 A AU 2608899A AU 735452 B2 AU735452 B2 AU 735452B2
- Authority
- AU
- Australia
- Prior art keywords
- cap
- snap hooks
- recess
- groove
- snap
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
- G01P1/02—Housings
- G01P1/026—Housings for speed measuring devices, e.g. pulse generator
-
- 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
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/007—Encoders, e.g. parts with a plurality of alternating magnetic poles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
Description
-1- Cap for snapping into a recess Prior Art The invention relates to a cap for snapping into a recess, in particular for a speed sensor on a wheel bearing.
It is known that for applications in the area of sensor technology, sensors must be applied to fixed mechanical parts near rotating components or otherwise moving components. In particular in wheel loaders, caps are applied in a recess near the rotating axle. Magnetic, magnetoresistive or Hall S 10 sensors able to detect rotations can be positioned in the cap. The securing of caps made of plastic takes place as a rule by means of pressing the cap into the metal part under an intermediate layer of seals and a metal ring for equalisation of temperature which is applied to the shoulder of the cap by a Srim.
Summary of the Invention .According to the present invention there is provided a cap for snapping into a recess, said cap having a plurality of snap hooks which engage a groove in the 0 recess when snapped on, wherein the snap hooks include a plurality of 20 lengths so that manufacturing tolerances in the groove and the snap hooks can be compensated for.
Advantages of the invention A cap, which can be snapped into a recess according to the type described above, is advantageous in the further development in that a simple and secure application of the cap onto a mechanical part is possible.
According to the invention, a number of snap hooks are easily fitted to the cap which, when the cap is snapped in, catch into a groove. This groove, which runs, as a rule, around the circumference, can be inserted inside the Secess during the machining of the mechanical part on which the cap is to be applied.
17/05/01,tdl 1373.spe.doc, 1 -2- In order to guarantee a secure fit for the cap, it is necessary to compensate the manufacturing tolerances between the inner groove or the entire seat in the recess and the snap hooks or the mating surface of the cap. If a gap between the cap and the recess results, relative movements between the cap and the mechanical part can ensue, having a very disturbing effect on the application described.
To address this, according to a preferred aspect of the invention, the groove on the flank in the direction of the cap and the corresponding surface of the snap hook maybe bevelled at an angle a. If a shoulder of the cap bears against the mechanical part, the snap hooks engage more or less deeply in the groove. The greater the angle a, the greater the tolerances which can be compensated. Too great an angle a has the disadvantage, however, that the withdrawing force cap will be eventually too small and a secure grip is no longer guaranteed.
In order to keep the withdrawing force as small as possible, the angle a will, according to a preferred aspect of the invention, also be kept as small as possible. In order, despite this, to equalise greater tolerances, the snap hooks 20 in the snap-in direction are formed of various lengths. For example, the snap hooks can be formed in two differing alternating lengths k, perhaps 2 times 12 in a length on the circumference. By this means it is guaranteed that at least one group of snap hooks is always fully engaged in the groove.
In the case of particular temperature stress, the holding power of the snap hook can be unacceptably diminished leading to a "creeping away" of the plastic cap. In order to equalise this detachment, the press hooks can be pressed over an internal spring in the direction of the grooves. The spring in a circular cap is a simple spring ring positioned in the inner diameter of the cap or the snaphook.
17105/01,tdl 1373.spe.doc,2 -3- In a preferred embodiment of the invention, the cap can be set on a wheel bearing, eg. in a motor vehicle and in the inside of the cap is a speed sensor for the detection of the rotations of the axle on the inside of the wheel bearing.
Drawing An embodiment of the cap of the invention for snapping into a recess of a mechanical part will be described on the basis of the drawing. Shown are: 10 Figure 1 a perspective view of a cap and Figure 2 a detail section in the area of the snap hooks snapped in according to Figure 1.
o. Description of the embodiment A plastic cap 1 for snapping into a recess of a wheel bearing is shown in :'Figure 1. The cap 1 has snap hooks 2 with which the snapping in can be effected. A speed sensor not visible here for the detecting of the rotation of an axle can be located in the cap 1 (cf. Figure The snap hooks 2 according to Figure 1 although shown as having the same length k are of 20 differing lengths k. A spring ring 3, which can press the snap hooks outwardly, is situated in the inner diameter of the snap hooks 2.
A sectional representation according to Figure 2 shows in detail the cap 1 with a snap hook of the length k, the cap 1 resting on a housing by a shoulder 8, possibly at a slight distance. The snap hook 2 grips into a groove 4 of a recess 5 of the housing 6 for a supported, rotating piece 7. The groove 4 and the snap hooks 2 are chamfered on their surface of action with the angle a.
In the recess 5 is a sealing ring 7 between the cap 1 and the housing 6.
1 t 3 d
R
0 17/05/01Mdl1 373.spe.doc,3
Claims (3)
1. A cap for snapping into a recess, said cap having a plurality of snap hooks which engage a groove in the recess when snapped on, wherein the snap hooks include a plurality of lengths so that manufacturing tolerances in the groove and the snap hooks can be compensated for.
2. The cap according to Claim 1, wherein the groove on the flank and the corresponding surface of the snap hook are bevelled at an angle o
3. The cap according to Claim 1 or Claim 2, wherein the snap hooks 0 S* can be pressed over an internally located spring in the direction of the groove. i The cap according to any one of the preceding claims, wherein the snap hooks are designed to alternate in two different lengths. The cap according to any one of the preceding claims, wherein the cap is made of plastic. *000 20 6. The cap according to any one of the preceding claims, wherein the cap can be positioned on a wheel bearing and in the inside of the cap a speed sensor for the detection of the rotation of the axle on the inside of the wheel bearing. Dated this 17t day of May, 2001. ROBERT BOSCH GMBH By their Patent Attorneys: CALLINAN LAWRIE 17105/01 ,td 11373.spe.doc,4
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803924A DE19803924C1 (en) | 1998-02-02 | 1998-02-02 | Sensor mounting cap for motor vehicle wheel bearing recess |
| DE19803924 | 1998-02-02 | ||
| PCT/DE1999/000018 WO1999039213A1 (en) | 1998-02-02 | 1999-01-07 | Cap for snapping on in a recess |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2608899A AU2608899A (en) | 1999-08-16 |
| AU735452B2 true AU735452B2 (en) | 2001-07-12 |
Family
ID=7856337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU26088/99A Ceased AU735452B2 (en) | 1998-02-02 | 1999-01-07 | Cap for snapping into a recess |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1053478B1 (en) |
| AU (1) | AU735452B2 (en) |
| DE (2) | DE19803924C1 (en) |
| WO (1) | WO1999039213A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19959454B4 (en) * | 1999-12-09 | 2007-10-04 | Siemens Ag | clip connection |
| EP3079237A1 (en) * | 2015-04-08 | 2016-10-12 | Siemens Aktiengesellschaft | Housing for a data encoder or an electric machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5190343A (en) * | 1990-08-16 | 1993-03-02 | Mercedes-Benz Ag | Releasable fastening device, especially for attachments on convertibles |
| US5438260A (en) * | 1992-07-03 | 1995-08-01 | Skf France | Removable device for sensing the rotation speed of a bearing, and a vehicle wheel hub assembly equipped with same |
| US5640087A (en) * | 1994-03-08 | 1997-06-17 | The Torrington Company | Device for detection of the speed of rotation of a rolling bearing |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3731710C2 (en) * | 1986-09-19 | 1997-11-27 | Papst Motoren Gmbh & Co Kg | Axially compact mini fan |
| FR2640706B1 (en) * | 1988-12-20 | 1991-02-01 | Roulements Soc Nouvelle | INFORMATION SENSOR BEARING |
-
1998
- 1998-02-02 DE DE19803924A patent/DE19803924C1/en not_active Expired - Fee Related
-
1999
- 1999-01-07 AU AU26088/99A patent/AU735452B2/en not_active Ceased
- 1999-01-07 DE DE59905448T patent/DE59905448D1/en not_active Expired - Fee Related
- 1999-01-07 WO PCT/DE1999/000018 patent/WO1999039213A1/en active IP Right Grant
- 1999-01-07 EP EP99906029A patent/EP1053478B1/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5190343A (en) * | 1990-08-16 | 1993-03-02 | Mercedes-Benz Ag | Releasable fastening device, especially for attachments on convertibles |
| US5438260A (en) * | 1992-07-03 | 1995-08-01 | Skf France | Removable device for sensing the rotation speed of a bearing, and a vehicle wheel hub assembly equipped with same |
| US5640087A (en) * | 1994-03-08 | 1997-06-17 | The Torrington Company | Device for detection of the speed of rotation of a rolling bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1053478A1 (en) | 2000-11-22 |
| DE59905448D1 (en) | 2003-06-12 |
| DE19803924C1 (en) | 1999-07-08 |
| AU2608899A (en) | 1999-08-16 |
| EP1053478B1 (en) | 2003-05-07 |
| WO1999039213A1 (en) | 1999-08-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) |