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
  • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
  • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
  • F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings

Definitions

• the invention is directed to a clutch release bearing guide structure as such in a conventional manner serves to guide a clutch release bearing on a guide body which is designed for example as a guide pin and surrounds a transmission input shaft.
• a clutch release bearing guide structure of the aforementioned type is known from DE 103 56 236 A1.
• a main body thereof is made of a plastic material and inserted into a flange housing.
• the main body forms a sliding sleeve whose inner peripheral surface acts as a sliding surface.
• the invention has for its object to provide solutions by which in a wide temperature range in terms of mechanical performance, in particular with regard to the ease and the Zentri zi expedi the clutch release bearing guide structure advantages over the previous designs.
• a guide bush body which is made of a plastic material and defines an inner surface which acts as a sliding guide surface, wherein the guide bush body has a front end edge region, which faces in the installed position of a clutch spring plate that clutch spring plate facing away from the rear end edge region and further comprises a sleeve body extending between these two end edge regions, and
• a receiving structure defining, as such, a receiving bushing adapted to receive the guide bushing body, comprising a front bushing edge portion and a rear bushing edge portion located in proximity to the corresponding end edge portions;
• said Kupplungsausschlager characterized in that in the said end edge regions of the guide bush body and the receptacle provided for receiving the same are each coupled via a support structure, wherein the support structure is formed such that it provides a Untergriffswandung by which the guide bush body in the edge region and taken is supported radially outwards.
• the provided for the creation of Kupplungsaus Wegneck- guide device according to the invention components can be manufactured in a cost effective manner and mounted in a simple manner.
• the influence of thermal expansion and shape errors caused by varying properties of the material used to form the guide bush body become relatively small.
• the undergrip wall is formed by an outer ring zone of the bush edge areas. This makes it possible to clamp the guide bush body directly through a wall of the receiving structure.
• a ring element which is placed as such on the corresponding end edge region of the guide bushing device and spans this on the receiving structure.
• This ring element can be embodied as a deep-drawn part and can be provided with latching elements, which as such allow sufficient securing of the ring element to the guide bush body and / or the receiving structure.
• the ring element can be pressed and snapped on, in particular, on the corresponding end edge region and the edge regions of the socket.
• the guide bush body and the receptacle provided for receiving the same can be designed such that, as part of bringing about the joining state, an elastic, radial widening of the guide bush body takes place.
• An axial-securing structure can be formed on the guide bush body in an advantageous manner, which as such causes an axial securing of the guide bush body in the receiving structure.
• This Axialommes- structure can be realized in particular by locking lugs, which form an integral part of the guide bush body.
• the guide bush body can be designed as a multi-part component.
• These corresponding politicianssen stresses- shells or segments may be formed with connection structures that allow as such a connection of the individual shell elements with each other. Otherwise, it is also possible to secure this multi-part guide bush body over the provided for receiving the same component in joining position.
• the guide bush body may be configured to include engagement structures that engage one another in the installation of the guide bush body in the corresponding receiving structure and secure the guide bush body in the corresponding joint position.
• the intended for receiving the ceremoniessbuchsen stresses invention receiving structure can be designed as a flange. It is also possible to form the receiving structure as an insert sleeve, which is first coupled to the guide bush body and as a preassembled module in a Receptacle flange is used. This design is particularly suitable for clutch release bearing for the operation of larger clutch systems, especially truck couplings.
• the insert sleeve can be manufactured as a deep-drawn part, or according to a particular aspect of the invention as a sheet-metal winding part.
• Anchoring structures may be formed on the insert sleeve which, in addition to the clamping of the guide bushing device according to the invention, make possible a further coupling of the plastic body of the guide bush device with the insert sleeve.
• the inventively designed guide bush body is preferably dimensioned such that its wall thickness is at least 3 mm.
• the guide bush body can be designed such that its inner wall functioning as at least partially sliding guide surface forms a specific profile, in particular a profile with grooves running in the axial direction.
• the guide bush body can furthermore be configured in such a way that it can be widened in the circumferential direction under relatively small radial forces until its outer surface sits against the adjacent inner surface of the receiving structure. This softening of the guide bush body can be achieved in particular by forming longitudinal slots in the guide bush body.
• the jacket of the guide bush body in such a way that it constitutes a relatively flexible structure in the circumferential direction.
• the sheath material is divided by groove sections such that the sheath material is meandering around those groove sections.
• These groove portions may alternately penetrate from the two axial ends, or preferably sequentially radially from the inside and radially from the outside into the jacket.
• This support sleeve can act as a connection structure, by means of which, in the case of the embodiment of the guide bush body, the corresponding sections can be held together as a structure divided transversely to the longitudinal direction.
• Figure 1 is an axial sectional view illustrating a first
• FIG. 2 shows a further variant of a clutch release bearing guide device thereof with a two-part guide bush body supported by a support sleeve
• FIG. 3 shows a third embodiment of a clutch release bearing guide device according to the invention with a guide bush body connected to an insert sleeve,
• FIG. 4 shows a fourth embodiment of a clutch release bearing guide device according to the invention with a guide bush body anchored on the end face in an insert sleeve and radially clamped on,
• FIG. 1 shows a clutch release bearing guide device including a clutch release bearing K supported by it.
• the clutch release bearing guide device according to the invention comprises a guide bush body 1, which is made of a plastic material and defines an inner surface I acting as a sliding guide surface.
• the guide bush body 1 comprises a front, in the installed position of a clutch spring plate C facing end edge region S1 and one of those clutch spring plate C remote rear end edge region S2 and extending between these two end edge regions S1, S2 sleeve body.
• the clutch release bearing guide device further comprises a receiving structure designed as a flange part in this exemplary embodiment, which as such defines a receiving bushing 2 provided for receiving the guide bush body 1.
• This female connector 2 includes a front female edge portion B1 and a rear female edge portion B2. These two bush edge regions B1, B2 extend in the immediate vicinity of the aforementioned end edge regions S1, S2 of the guide bush body 1.
• the clutch release bearing guide device is characterized in that in the aforementioned end edge regions S1, S2 that guide bush body 1 and the receptacle 2 provided for receiving the same are coupled to one another via holding structures UR1, UR2, wherein these holding structures UR1, UR2 are designed such that they each provide a Untergriffswandung S, by which the guide bush body 1 is underride and supported radially outward.
• annular edge R1 is formed in the region of the end edge region S1 on the guide bush body 1, which forms an annular shoulder projecting over the bush edge area B1.
• the end edge region S2 of the guide bush body is supported in this embodiment by a ring element R2.
• the ring element R2 comprises an outer wall 3 and an inner wall 4, which as such forms the lower handle wall S.
• the two walls 3, 4 of the ring element 2 are connected by a front end wall 5 with each other.
• the ring element R2 is provided in the region of the outer wall with a securing structure 6, via which the ring element R2 is locked to the rear edge bushing region B2.
• the guide bush body 1 shown here is inserted into the receiving structure 2 via the front opening framed by the front bush edge area B1.
• the axial securing of the guide bush body 1 in that receiving structure 2 takes place in this embodiment by a latching structure 7, which is formed in this embodiment by an annular shoulder which sits in a step-like expanded end portion of the receiving structure 2 and engages behind an end wall of this stage in the extension direction.
• a latching structure 7 which is formed in this embodiment by an annular shoulder which sits in a step-like expanded end portion of the receiving structure 2 and engages behind an end wall of this stage in the extension direction.
• the design of the support structure UR2 described here using a ring element R2 is also suitable for the radial clamping of the guide bush body 1 in the region of the front end edge region S1.
• the contact surfaces formed between the end edge region S2 and the ring element R2 can also be designed in their geometry such that clawing of the ring element R2 takes place at the end edge region S2 of the guide bush body 1, as exemplified by the detail sketch Z1 included in this illustration is illustrated.
• a receiving socket receiving structure 2 forms an integral part of a Kupplungsaus Wegflansches.
• a housing element 8 which is preferably made of a plastic material and molded onto the receiving structure 2.
• a ring claw 9 through which the Clutch release bearing K is connected to the housing structure 8 and the receiving structure 2.
• the connection of the clutch release bearing K to the housing structure 8 takes place in such a way that the clutch release bearing K is displaceable to a certain extent relative to the receiving structure 2 in the radial direction.
• a spring ring 10 through which an outer ring member 11 of the clutch release bearing K is stretched against a provided by the ring claw 9 face.
• the clutch release bearing K further comprises an inner ring 12, rolling elements 13, and sealing means 14, 15.
• the inner ring 12 is formed such that it comprises an extension 12a, which forms an end face, possibly directly on a clutch spring plate C can sit up.
• the guide bush body 1 made of a plastic material is positively secured in the area of the bush edge regions B1, B2 in such a way that it can not lift off in the radial direction, or not unduly, from the inner surface defined by the receiving structure 2.
• extensions for the radial and axial limitation of the plastic sliding sleeve are formed as an extension of the cylindrical section of the steel flange.
• the axial fixation is effected by an integrally formed shoulder at the points of action by snapping the snap-in lugs formed on the end region of the plastic sliding sleeve.
• the end region is pressed radially by the end ring or with prestressing to the bore edge region of the through holes.
• plastic sliding sleeve design the plastic sliding sleeve as half shells.
• the guide clearance between the housing bore and the guide sleeve can be reduced in favor of better leadership quality
• This holding structure UR2 forms an outer wall 3 which, as such, is seated on the bush edge area B2.
• the guide bush body 1 is designed as a first divided component.
• the guide bush body 1 consists of a first guide bush section 1 a and a second guide bush section 1 b. These two guide bush sections 1 a, 1 b are joined together in the region of a connection point 16. It is possible, the two guide bush sections 1 a, 1 b in Area of this joint 16 with each other material, in particular by a welding or bonding process to connect together. It is also possible to form on the guide bush sections 1 a, 1 b connecting, in particular Verkrallungs Modell which engage in reaching the joint shown here together and secure the guide sleeve sections 1 a, 1 b in the assembled state shown here.
• a support ring 17 is further provided by which the guide bush body 1 is also supported in its between the end edge regions S1, S2 lying center region in the radial direction.
• This support ring 17 may be formed so as to be provided by these Verkrallungsabête through which the two guide bush sections 1 a, 1 b can also be coupled together.
• the guide bush body 1 axially in two parts.
• the axial, radial fixation of the plastic sliding sleeves takes place in the end regions of the cylindrical section via the integrally formed plastic flange structures and their integrally formed cylindrical extension.
• Particularly advantageous is a molded in the circumferential direction, positive snap connection.
• a metal support sleeve in the central region of the plastic sliding sleeve is alternatively proposed to provide a metal support sleeve in the central region of the plastic sliding sleeve.
• This can be produced as a wound strip, for example by rolling and welding and / or by chlichin, and after joining presses the end regions of the plastic sliding sleeves tightly against the bore wall of the Steel flange. As a result, a smallest possible bore tolerance of the plastic sliding sleeve is achieved.
• FIG. 3 shows a further exemplary embodiment of the clutch release bearing guide device according to the invention, in which the receiving structure 2 is formed by an insert sleeve, which as such is inserted into a clutch release flange 18.
• the intended for the formation of the receiving structure 2 insert sleeve is made of a sheet material, in particular wound.
• This insert sleeve similar to the exemplary embodiments described above, forms bush edge regions B1, B2 on which the end edge regions S1, S2 of the guide bush body 1 are suspended via retaining structures UR1, UR2.
• undercut claws 19, 20 are formed, through which the guide bush body 1 is also taken up in the center region located between the end edge regions S1, S2 in the radial direction.
• a latching claw 21 is further formed, by which it is secured in the joining position shown here in an opening provided by the Kupplungsaus Wegflansch 18 insertion opening.
• the insert sleeve 2 is preferably made of a steel material.
• the insert sleeve 2 may be made as a wound sheet metal part, wherein preferably the joints of this sheet metal part are interconnected. This connection can be made by welding or soldering seams. It can also be realized by forming other connection structures, in particular Verkrallungs- or clinch structures.
• the guide bush body 1 can be formed into two ring elements, as described in connection with the starting example according to FIG.
• the left ring element 1 a and the right ring element 1 b may be interconnected by a welding or splice. It is also possible, as shown here, in conjunction with the insert sleeve 2 to realize latching structures by which the two guides Bushing elements 1 a, 1 b are held in the joining position shown here.
• a metal support sleeve in the middle region of the plastic sliding sleeve.
• This may be in the form of a wound tape, e.g. be produced by rolling and welding and / or by clinching and pressed after joining the end portions of the plastic sliding sleeves closely to the bore wall of the steel flange. As a result, a smallest possible bore tolerance of the plastic sliding sleeve is achieved.
• plastic sliding sleeves 31 and 32 snapped together with the steel sleeve 31 can be fixed to the steel flange by snap-fastening.
• FIG. 4 shows a fourth exemplary embodiment of a clutch release bearing guide device according to the invention.
• the guide bush body 1, similar to the embodiments described above, in the region of its front ends S1, S2 each of a Untergriffswandung S undercuts.
• This sub-grip wall S is provided in this exemplary embodiment by reshaping the sleeve edge regions B1, B2 to the support structures UR1, UR2.
• latching structures 21 are formed, through which the insert sleeve 2 can be locked in the mounting position shown here the can.
• These latching structures are designed in this embodiment as latching jaws formed by a stamping bending corresponding sections of the shell of the insert sleeve 2.
• an annular shoulder 22 is further provided by which the insertion depth of the clutch release bearing guide means in a receiving member (here Kupplungsaus Wegflansch 18) is fixed.
• the guide bush body 1 may be composed of a plurality of shell elements and / or also of a plurality of ring elements. These individual Guide bush body elements are coupled together by the insert sleeve 2. A captive securing of the individual elements of the guide bush body 1 results automatically even when it is installed in a coupling arrangement.
• FIG. 5 shows a fifth embodiment is shown, which largely corresponds in its construction to the embodiment of Figure 4. Notwithstanding the embodiment according to FIG. 4, web portions 22 are provided by the guide bush body 1, by which the guide bush body 1 is secured in the insert sleeve 2 and a receiving part (in this case the clutch release flange 18). To assemble such a variant of the clutch release bearing guide device, the guide bush body 1 is first manufactured as a multi-part structure.
• the guide bush body 1 By subdividing the guide bush body 1 into a structure composed of at least two shell segments, or at least by forming a longitudinal separation point, it becomes possible to avoid a constriction of the inner cross section of the guide bush body 1 due to a temperature-induced change in volume, in particular shrinkage. Due to the inventive suspension of the mecanicsbuchsenkör- pers on the insert sleeve 2, it is possible to set the inner cross section of the guide bush body substantially by the dimensions of the insert sleeve 2 in the inner region thereof, as well as by the wall thickness of the guide bush body 1. The wall thickness of the guide bush body 1 experiences as a result of temperature fluctuations significantly lower absolute dimensional changes than the circumferential length of the guide bush body.
• the clutch release bearing guide device preferably comprises a steel flange made as a forming component, in which the preferably slotted plastic sliding sleeve is inserted, so that it is fixed radially and axially directly on the cylindrical portion of the steel flange.
• the molded on the clutch actuator spring side of the plastic sliding sleeve molded plastic flange together with the end face of the steel flange forms the axial limit during assembly.
• the cylindrical flange integrally formed on the plastic flange press-fitted around the cylindrical end portion of the steel flange.
• a release bearing is proposed in which a steel sleeve presses the slotted plastic sliding sleeve at the end regions of the bore wall of the steel sleeve radially through a correspondingly shaped bottom portion and by crimp collar.
• the steel sleeve is fixed in a force-fitting manner and / or axially fixed by snapping on the steel flange via an interference fit.
• material and / or positive connection techniques such. Laser brazing, gluing, punched rivets, rolled threads etc. are conceivable.
• the steel sleeve can also be performed smooth cylindrical.
• the steel sleeve can be rolled, welded and / or produced by clinching by deep drawing or from strip material. As a variant to this, it is proposed, if necessary, to provide a steel support sleeve in the center of the bore.
• the plastic sliding sleeve with snap bars. After positioning the steel flange on the steel sleeve, the Half-shells of the plastic sliding sleeve with their snap-in bars are inserted without clearance into the clearances of the steel sleeve and the flange, whereby the heads of the snap-in bars with the steel flange tighten in the circumferential direction. At the same time, the release bearing is fixed axially to the steel flange via the Bördelborg. For radial pressing of the plastic sliding sleeve then the end portions of the steel sleeve are integrally formed by eg crimping play on the plastic sliding sleeve.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Mechanical Operated Clutches (AREA)

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Applications Claiming Priority (2)

Publications (1)

Family

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Citations (6)

Family Cites Families (1)

• 2007
  • 2007-06-23 DE DE200710028983 patent/DE102007028983A1/de not_active Withdrawn
• 2008
  • 2008-05-13 CN CN2008800215716A patent/CN101688568B/zh not_active Expired - Fee Related
  • 2008-05-13 WO PCT/EP2008/055809 patent/WO2009000593A1/de active Application Filing

Patent Citations (6)

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