EP2379903A1 - Roller bearing for two components that can be at least axially moved toward one another, particularly for transmission shifting elements - Google Patents
Roller bearing for two components that can be at least axially moved toward one another, particularly for transmission shifting elementsInfo
- Publication number
- EP2379903A1 EP2379903A1 EP09765060A EP09765060A EP2379903A1 EP 2379903 A1 EP2379903 A1 EP 2379903A1 EP 09765060 A EP09765060 A EP 09765060A EP 09765060 A EP09765060 A EP 09765060A EP 2379903 A1 EP2379903 A1 EP 2379903A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- rolling bearing
- bearing according
- rolling
- component
- 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- Withdrawn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
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
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
-
- 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
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H59/70—Inputs being a function of gearing status dependent on the ratio established
-
- 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
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
-
- 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
- F16C2233/00—Monitoring condition, e.g. temperature, load, vibration
-
- 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
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/61—Toothed gear systems, e.g. support of pinion shafts
-
- 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
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H2063/3076—Selector shaft assembly, e.g. supporting, assembly or manufacturing of selector or shift shafts; Special details thereof
-
- 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
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H2063/3079—Shift rod assembly, e.g. supporting, assembly or manufacturing of shift rails or rods; Special details thereof
Definitions
- a sensor lock which places the sensor system in a switching mechanism. integrated.
- the shift lock has a shift pin with a latching element guided on its end face. This is preferably spherical and engages in a trained as a locking contour runway of the switching element, against which it is biased.
- the sensor lock has a signal transmitter and a sensor as two sensor elements, which are movable relative to one another by the latching element.
- a disadvantage of such a sensor lock is that it has a relatively high construction and is partially arranged at a position that is unsuitable for the sensor system, so that metallic abrasion can impair the function of a magnet as a signal generator.
- Such a sensor lock translates the predetermined by the desired switching force profile multi-dimensional height profile of the locking contour in a one-dimensional stroke of the lock.
- different gear positions result in the same position of the signal transmitter and of the sensor, so that in the case of a switching unit having a switching element and a sensor lock, the various switching positions of the switching element can not be kept apart without further aids.
- the object of the invention is to provide a sensor arrangement which avoids the disadvantages mentioned above and which is easy to manufacture.
- a sensor is integrated with at least one signal generator and at least one sensor in a rolling bearing axially to each other to be moved components.
- integration means that both components together with the sensor system and the rolling bearing form a unit that can be assembled.
- the sensor and the signal transmitter this means that in every possible position of the two components relative to one another at least one sensor element is arranged in the same axial section of the component as the roller bearing.
- the sensor is the stationary sensor element and is arranged radially offset from the rolling elements. Due to the integration into the roller bearing, the sensor technology is protected against external influences by its integration into the rolling bearing. Because housing-mounted holders for the sensor system can be dispensed with, a sensor arrangement for discrete or continuous setting positions which is very easy to install is created.
- the present invention relates in particular to a roller bearing for shift rails.
- This is understood to mean selector rods and selector shafts of a motor vehicle transmission that are linearly movable or circumferentially movable.
- the cross section of the shift rails may be circular, rectangular or other shape.
- shift rails usually the neutral position, the gear positions and possibly also middle positions are detected.
- the shift rails transmitted at change-speed gearboxes of motor vehicles, the movements of shift and / or selector levers on the respective sliding sleeves of the transmission.
- the shift rails transmit axial actuation forces to the shift forks fixed to these elements and transmit the reaction forces resulting from the shift to the transmission housing.
- these elements are mounted axially movable.
- the integration of the sensors in the rolling bearing allows a constructive positioning of the sensor to the signal generator, without the need for additional tools must be installed.
- Existing storage concepts can be easily provided with a sensor. It is particularly simple to arrange a permanent magnet on the switching rail, which cooperates with a Hall sensor arranged in the housing.
- rolling bearings in which usually three or more defined, oriented in the longitudinal direction of movement grooves are provided in which the rolling elements - are usually balls - out.
- the rolling elements usually run on a sheet-metal element which surrounds the shift rail and is shaped in such a way that raceways are created towards the ball.
- the ball raceways can also be introduced directly into the surface of a shift rod.
- the rolling elements roll off in a circular cylinder sleeve, which is pressed into the transmission housing.
- Such rolling bearings allow good efficiencies due to a low bearing friction and thus increase the shifting comfort, since they can provide a very smooth longitudinal guide of the shift rail. The ease of movement is particularly advantageous for accurate detection of the switching position.
- the roller bearing according to the invention has at least two rows of each aligned in the direction of displacement of the components arranged rolling elements, which roll in each case in tracks or are guided, which partially surround the outer contour of the rolling elements.
- the raceways formed around the rolling elements increase the contact surfaces between the raceways and the rolling elements, thereby reducing the surface pressure between the components; It can thus be transmitted greater forces and, if necessary, torques. Since the raceways have no cylindrical contour, a rotation of the two mutually displaceable components is prevented, which allows the transmission of torque.
- balls which are each guided in raceways, which have circular ring segments in cross section, which correspond to the diameters of the rolling elements. Characterized in that the raceways are adapted in cross-section respectively to the contours of the balls, The surface pressures are reduced by the larger touching surfaces, which also reduces the component load.
- the first component has an inner sleeve for guiding the rolling bodies.
- the inner sleeve is preferably formed from sheet steel and is supported on the shift rail at several support points.
- the second component may be a housing with an outer sleeve disposed therein for the outer guidance of the rolling elements. Due to the occurring loads by the rolling elements, it is not advisable to arrange the signal transmitter or the sensor in the region of the raceways. On the other hand, an arrangement is possible between the raceways, but will usually not be done for space reasons. If the signal heads are sufficiently flat, such as flat magnets or optical markings, these can be integrated into the respective sleeves. This is also possible with flat sensors.
- the inner sleeve does not completely surround the shift rail, but does not cover a portion of the shift rail.
- it may, for example, be slotted or have suitable recesses.
- the signal generator if necessary in the switching rail, is preferably arranged. If the signal transmitter is a magnet, its field is not shielded in the radial direction by the metallic sleeve.
- the outer sleeve may have an opening for the sensor, so that it can come as close as possible and close to the signal generator.
- the components may in particular have three radially evenly arranged raceways for each aligned in the direction of displacement of the components arranged rolling elements.
- the shift rail can be carried out particularly accurately.
- the transferable forces are higher because the shift rail is supported on three sides.
- more than three regularly arranged raceways can be provided for correspondingly more rows of rolling elements. This allows either the allowable loads for the Increase shift rail or reduce the diameter of the rolling elements, since the load can be distributed to a higher number of rolling elements.
- the outer sleeve with three raceways for two, three or more rows of rolling elements expediently has a triovalen cross section with sections circular segment-shaped guides or raceways for the rolling elements, whereby the exact and symmetrical guidance of the balls is guaranteed.
- the inner sleeve may have three cross-sectionally circular segment-shaped guides or raceways for the rolling elements, whereby the inner sleeve and the inner panel for supporting the shift rail is designed so that the lowest possible surface pressures arise.
- the non-cylindrical cross section of the outer sleeve has the consequence that only certain, defined raceways exist for the rolling elements and thus there are non-loaded areas of the outer sleeve by the balls. In these areas, the sensors are preferably arranged, since these are usually not so robust that they can be run over with bearing force. Due to the non-cylindrical cross section, the shift rail is also pivotable, taking the outer sleeve with it.
- a damping element may be arranged made of an elastic material which dampens the noise transmission between the inner component and the outer component.
- the outer sleeve is fixed in an adapter sleeve with a cylindrical outer circumferential surface.
- the adapter sleeve is fixed without play in a hollow cylindrical bore of the first component or housing.
- the adapter sleeve has an inner sleeve, which corresponds to the outer contour of the outer sleeve for guiding the rolling bodies.
- the outer sleeve for external storage and management of the rolling elements is fixed without play in the adapter sleeve.
- the adapter sleeve is made of an elastic material.
- an elastic material comes, for example, a thermoplastic art fabric with sufficient elasticity or with sufficient damping properties in question.
- a thermoplastic art fabric with sufficient elasticity or with sufficient damping properties in question.
- By an elastic outer sleeve also misalignment can be compensated.
- the inner sleeve for guiding the rolling elements may be further formed by a bearing ring which is fixed on the outer circumference of the second component or the rod or shift rail.
- the inner sleeve for guiding the rolling elements may be formed by longitudinal grooves, which are introduced into the outer periphery of the second component or the rod or shift rail.
- corresponding longitudinal grooves can be introduced in the axial direction in the outer contour of the rod or shift rail, which then serve as axial raceways for the rolling elements or balls of the rolling bearing.
- the rolling elements are held by a cage and fixed in position to each other.
- this cage is dispensable, although it facilitates the installation of the rolling elements considerably compared to a single assembly with balls.
- the cage can, for example, consist of sheet metal.
- a suitable material for the cage may also be polyamide (e.g., PA66).
- Fig. 1 shows a schematic cross section of a first variant of a roller bearing for the axial guidance of a shift rail with a rectangular cross-section in a housing.
- FIG. 2 shows a perspective partial longitudinal section of the rolling bearing according to FIG. 1.
- Fig. 3 shows a schematic longitudinal section of the roller bearing for
- FIG. 4 shows a schematic cross section of a second variant of
- Fig. 5 shows a perspective view of the rolling bearing according to
- FIG. 1 shows a cross section through an embodiment of a rolling bearing 1 according to the invention, comprising a first component 2 as a shift rail 15 with a rectangular cross-section axially displaceable (ie, perpendicular to the plane) in a second component 3 as a housing 17 of a transmission is stored.
- a first component 2 as a shift rail 15 with a rectangular cross-section axially displaceable (ie, perpendicular to the plane) in a second component 3 as a housing 17 of a transmission is stored.
- an inner sleeve 4 is arranged as a sheet metal part which serves as an inner guide for the drawing only indicated rolling elements 5, which are each formed by balls in the present embodiment.
- the inner sleeve 4 has three circumferentially distributed guide sections 6, which extend axially and have a circular segment section in cross section.
- the radius of the circular segment section corresponds to the radius of the rolling elements 5, so that they encompass and are guided over a defined area.
- the effective surface pressure between the rolling elements 5 and the inner sleeve 4 and their guide portions 6 is significantly reduced compared to a conventional axial bearing.
- the balls or rolling elements 5 are guided outside in an outer sleeve 7, which has a triovale cross-sectional contour. It is also important here that their outer guide sections 8 extend axially uniformly and in cross-section have a circular segment portion whose radius corresponds to the radius of the rolling elements 5, so that they are encompassed and guided over a defined range, whereby the effective surface pressure between rolling elements 5 and outer sleeve 7 or its guide sections 8 compared to a conventional, hollow cylindrical axial bearing German lent is reduced. Between each two loaded via the rolling elements 5 guide portions 8 connecting portions 20 are arranged, which are not or only slightly loaded. A connecting portion 20 has a recess 18 for a second sensor element 14.
- the second sensor element 14 is a sensor 21 and arranged substantially outside the outer sleeve 7 in an adapter sleeve 10 or in a housing 17, but projects here into the region of the outer sleeve 7 so that it forms a surface with no offset.
- the signal generator or transmitters 22 are either integrated into the shift rail 15 or, as in this exemplary embodiment, arranged in a cage pocket 23 of the cage 9. You can there be movably mounted as the rolling elements 5, or they are firmly connected to the inner sleeve 4 and the shift rail 15. In order to ensure the most accurate detection, the gap 24 separating the signal transmitter 22 and the sensor 21 should be kept as small as possible.
- a cage 9 serves for the exact guidance of the rolling elements 5 between the inner sleeve 4 and the outer sleeve 7 and to ensure a uniform distance between the rolling elements. 5
- the adapter sleeve 10 is arranged, which serves on the one hand to compensate for the different contours and which on the other hand can provide a quite desirable damping effect in order to prevent the transmission of noise. see and reduce vibrations between the gear housing 16 and the shift rail 15.
- the adapter sleeve 10 thus acts as a damping element and is preferably made of an elastic material.
- Fig. 2 illustrates again the already mentioned for Fig. 1 components of the rolling bearing in perspective partial longitudinal section.
- the schematic longitudinal section of FIG. 3 illustrates that the inner sleeve 4 is inserted into a corresponding sleeve receptacle 11 on the outer circumferential surface of the shift rail 15.
- the sleeve receptacle 11 has a depth which corresponds approximately to the thickness of the inner sleeve 4. From the longitudinal section, it is further apparent that a plurality of sensors 21 are arranged in axial succession in order to be able to reliably detect various positions of the shift rail 15.
- the sensors 21 are connected via a conductive connection to a plug-in contact 19, which is connectable to an external connector of an evaluation unit.
- the thickness of the shift rail 15 is partially reduced to accommodate the signal generator 22.
- FIG. 4 and the cross-sectional view of Fig. 5 illustrate an alternative variant of the rolling bearing 1, is dispensed with an inner sleeve and instead of the inner bearing shell corresponding groove-shaped guide recess 12 on the outer circumferential surface of a switching element 16 designed as a first component 2 introduced are.
- the guide recesses 12 may each have a depth which corresponds approximately to the thickness of the inner sleeve 4 according to the first variant.
- the signal generator 22 is arranged on the outside of the shift rod 16 in a region which is not loaded by the rolling elements.
- the remaining parts correspond to the previously explained components according to the figures 1 to 3.
- Fig. 5 illustrates this alternative variant again in a perspective view. LIST OF REFERENCE NUMBERS
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008063598A DE102008063598A1 (en) | 2008-12-18 | 2008-12-18 | Rolling bearing of two at least axially displaceable components, in particular for transmission switching elements |
PCT/EP2009/065499 WO2010069705A1 (en) | 2008-12-18 | 2009-11-19 | Roller bearing for two components that can be at least axially moved toward one another, particularly for transmission shifting elements |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2379903A1 true EP2379903A1 (en) | 2011-10-26 |
Family
ID=42111602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09765060A Withdrawn EP2379903A1 (en) | 2008-12-18 | 2009-11-19 | Roller bearing for two components that can be at least axially moved toward one another, particularly for transmission shifting elements |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2379903A1 (en) |
CN (1) | CN102257287B (en) |
DE (1) | DE102008063598A1 (en) |
WO (1) | WO2010069705A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013205071B4 (en) * | 2013-03-22 | 2019-08-01 | Schaeffler Technologies AG & Co. KG | Switching device for a change-speed gearbox of a motor vehicle and linear roller bearing with a switching device |
DE202013004061U1 (en) * | 2013-04-04 | 2013-06-14 | Schaeffler Technologies AG & Co. KG | Switching element of a Fahrzeuggangräderwechselgetriebes |
CN105465173B (en) * | 2016-01-13 | 2018-06-12 | 常州东风轴承有限公司 | Linear bearing component |
DE102016116113A1 (en) * | 2016-08-30 | 2018-03-01 | Thyssenkrupp Ag | Bearings and procedures for wear monitoring and / or load measurement |
CN106402149B (en) * | 2016-10-25 | 2019-01-18 | 浙江大学 | Non-circular contact locus of points rolling bearing |
DE102018200048A1 (en) * | 2018-01-03 | 2019-07-04 | Aktiebolaget Skf | Roller with integrated load detection |
CN108757727A (en) * | 2018-06-15 | 2018-11-06 | 重庆交通大学 | Vibration damping drop rushes bearing |
DE102020126396B4 (en) | 2020-10-08 | 2023-10-26 | Schaeffler Technologies AG & Co. KG | Switching element and switching device with a switching element |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT349384B (en) * | 1977-05-16 | 1979-04-10 | Heinz Dipl Ing Dr Tech Sernetz | CONVEYOR ROLL |
DE3402523A1 (en) * | 1984-01-26 | 1985-08-01 | INA Wälzlager Schaeffler KG, 8522 Herzogenaurach | ROLLER BEARING FOR LONGITUDINAL MOVEMENTS FOR GUIDING A ROD WITH RECTANGULAR CROSS-SECTION |
CN1083186A (en) * | 1993-04-20 | 1994-03-02 | 叶有兴 | Multifunctional anti skid bearing |
JPH1061665A (en) * | 1996-08-15 | 1998-03-06 | Nippon Thompson Co Ltd | Spline bearing |
DE19922363A1 (en) * | 1999-05-14 | 2000-11-23 | Rexroth Star Gmbh | Device for determining the relative position of two bodies movable relative to one another and method for producing such a device |
JP2004003601A (en) * | 2002-04-23 | 2004-01-08 | Nsk Ltd | Rolling bearing unit with sensor |
DE502004001405D1 (en) * | 2003-11-28 | 2006-10-19 | Schaeffler Kg | Pressure-medium-operated switching device of a step change gearbox |
DE102006028785B3 (en) | 2006-06-23 | 2007-04-12 | Audi Ag | Position sensor arrangement for gear shift rod has rod projecting through boring in oil cavity wall into transmission cavity |
DE102006036696A1 (en) * | 2006-08-05 | 2008-02-07 | Schaeffler Kg | sensor arrangement |
DE102007016751A1 (en) | 2007-04-07 | 2008-10-09 | Schaeffler Kg | Probe arrangement for detecting the switching position of a transmission and transmission with the probe arrangement |
-
2008
- 2008-12-18 DE DE102008063598A patent/DE102008063598A1/en not_active Ceased
-
2009
- 2009-11-19 CN CN200980151376.XA patent/CN102257287B/en not_active Expired - Fee Related
- 2009-11-19 EP EP09765060A patent/EP2379903A1/en not_active Withdrawn
- 2009-11-19 WO PCT/EP2009/065499 patent/WO2010069705A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2010069705A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102008063598A1 (en) | 2010-08-05 |
CN102257287B (en) | 2014-08-27 |
CN102257287A (en) | 2011-11-23 |
WO2010069705A1 (en) | 2010-06-24 |
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