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
  • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
  • F16C41/04—Preventing damage to bearings during storage or transport thereof or when otherwise out of use
• • 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
  • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
  • F16C13/006—Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one
• • 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
  • F16C35/07—Fixing them on the shaft or housing with interposition of an element
  • F16C35/073—Fixing them on the shaft or housing with interposition of an element between shaft and inner race ring
• • 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
  • F16H7/00—Gearings for conveying rotary motion by endless flexible members
  • F16H7/18—Means for guiding or supporting belts, ropes, or chains
  • F16H7/20—Mountings for rollers or pulleys
• • 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
  • F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
  • F16B41/002—Measures against loss of bolts, nuts or pins
• • 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
  • F16C2361/00—Apparatus or articles in engineering in general
  • F16C2361/63—Gears with belts and pulleys
• • 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
  • F16H57/00—General details of gearing
  • F16H2057/0093—Means or measures for transport, shipping or packaging
• • 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
  • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
  • F16H55/32—Friction members
  • F16H55/36—Pulleys
• • 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
  • F16H57/00—General details of gearing

Definitions

• the invention relates to a deflection roller with which a traction means, in particular a V-ribbed belt or a toothed belt of a traction mechanism drive, is deflected.
• the deflection roller comprises a roller bearing with a rotationally fixed inner ring and a rotating outer ring.
• the outer ring is enclosed by an annular body forming a barrel jacket, on the jacket surface of which the traction means is guided.
• Holding means or fastening means form a structural unit together with the deflection roller by means of a transport lock.
• a deflection roller consisting of a deep groove ball bearing, which is enclosed on the outside by a molded plastic barrel sleeve.
• holding means consisting of a sealing washer and a screw, the guide projection of which is inserted in the inner ring of the deflection roller bearing.
• the outer circumference of the sealing washer also forms a seal for the rolling bearing.
• a cup-shaped embossing is provided in the center of the sealing washer, the cylindrical portion of which is pressed into the bore of the inner bearing ring.
• the central hole in the sealing washer is used to hold the guide shoulder of the locking screw.
• the screw head is supported on the inner ring on the end face with the interposition of the sealing washer.
• a guide attachment adjoining the screw head serves to center the screw in the inner race of the rolling bearing.
• the sealing washer is to be connected to the Provided with circumferentially distributed, resilient tongues that are axially / radially inclined to the shaft of the locking screw.
• This transport lock thus comprises a sealing washer with a complicated shape, which causes both high manufacturing costs and cost-intensive assembly.
• This object is achieved according to the invention in that in a spacer sleeve assigned to the deflecting roller, a through hole for receiving the fastening screw is provided with at least one inward radial projection, which secures the fastening screw in a force-locking manner.
• This transport lock according to the invention requires no additional component in comparison to the known prior art and can be implemented inexpensively by means of a simple material forming. In addition, the transport lock according to the invention has no adverse influence on the assembly.
• the transport lock according to the invention also ensures, by means of a corresponding design of the radial projection or a plurality of radial projections, that the fastening screw in the spacer sleeve is positioned in the deflection roller in accordance with the installation position. This measure simplifies the assembly of the entire deflecting roller and at the same time enables assembly of the deflecting roller in accordance with the machine because of the precompleted arrangement of the fastening screw, including all holding means.
• the spacer sleeve provides for the spacer sleeve to be provided with radial projections arranged symmetrically around the circumference. This measure improves the central arrangement of the fastening screw in the spacer sleeve.
• the invention includes a spacer sleeve, the radial projections of which are guided up to the outer surface of the screw shaft in order to achieve a positive connection. A play-free arrangement of the fastening screw in the spacer sleeve can thus be ensured, combined with an exact alignment of the fastening screw with respect to the spacer sleeve.
• the non-positive transport lock also ensures an improved position fixation of all holding means during transport and assembly of the entire assembly.
• Adequate cohesion of all holding means of the deflection roller is thus ensured without additional components.
• the slightly increased tightening torque of the fastening screw due to the radial pressure by the projections acting on the screw shank can be compensated or corrected if necessary by a correspondingly increased tightening torque of the fastening screw.
• the arrangement of the spacer sleeve and the fastening screw is provided such that the screw head of the fastening screw and the spacer sleeve are supported on opposite end faces of the inner race of the rolling bearing.
• the fastening screw is centered both by the guide lug fitted in the inner ring of the rolling bearing and on the projections of the spacer sleeve via the screw lug, whereby the installation position of the fastening screw is defined at the same time.
• Another advantageous embodiment of the invention provides for the radial projections to be arranged in a recess which is axially offset from the end face of the spacer sleeve. This position avoids an influence of the radial projections on the end support surface of the spacer sleeve, for example on a tensioning arm or on a contact surface of the internal combustion engine.
• a further embodiment of the invention provides for a spacer sleeve designed as a casting to be designed in such a way that it is already provided with radial projections as a blank.
• a completely cast spacer sleeve saves a work step with which the projections can be cantilever molding.
• Fastening screws are used in such spacer sleeves, the screw shaft diameter of which exceeds the diameter in the region of the threaded section.
• the radial projections preferably have a semicircular cross-sectional shape. This shape is achieved through the use of appropriate tools with which material is formed on the end face of the spacer sleeve in the area of the central bore.
• the invention also includes alternative projections with a different geometric shape. The position of the radial projections enables them to be introduced into the spacer sleeve after the fastening screw has been installed, for example by means of a center punch or another tool.
• the spacer sleeve according to the invention is preferably made of aluminum or an aluminum alloy. Alternatively, a steel spacer sleeve can also be used, whereby both a cutting and a non-cutting manufacturing process can be provided.
• FIG. 1 shows in a longitudinal section a deflection roller in which the transport lock according to the invention is integrated
• FIG. 2 shows an enlarged illustration of the detail “z” according to FIG. 1.
• the deflection roller 1 shown in FIG. 1 comprises a roller bearing 2 designed as a deep groove ball bearing, the outer ring 3 of which is made of a plastic posed ring body 4 is enclosed.
• a traction means 6, designed as a V-ribbed belt, is guided on a lateral surface 5 of the ring body 4.
• An inner ring 7 of the rolling bearing 2 is connected to holding means, consisting of a fastening screw 8 and a spacer sleeve 9.
• the fastening screw 8 is supported on the end face of the inner ring 7 by a screw head 10.
• a guide lug 11 axially upstream of the screw head 10 is fitted into a central bore 12 of the inner ring 7.
• the spacer sleeve 9 is supported on the end face of the inner ring 7 opposite the screw head 10, the spacer sleeve 9 also being centered in the inner ring 7 with a guide collar 13.
• the spacer sleeve 9 is provided with a through hole 14 for the fastening screw 8.
• On the end face 15 facing away from the rolling bearing 2, the spacer sleeve 9 is stepped in the region of the through bore 14 and forms an axially offset recess 16.
• the spacer sleeve 9 is provided with a plurality of circumferentially distributed projections 18 with projections 18 oriented radially in the direction of the fastening screw 8.
• projections 18 which are preferably formed by a material deformation, are assigned to a screw shaft 19 of the fastening screw 8 and thereby form a radial overlap with a threaded section 20.
• the fastening screw 8 forms a screw shaft 19 whose diameter "d" is smaller as the threaded section 20 of the fastening screw 8. This creates a radial overlap, which represents an effective protection against loss of the fastening screw, between the transport lock 17 and the threaded shaft 20.
• the radial projections 18 provided for the transport lock become in the spacer sleeve 9 after the fastening screw 8 has been installed
• a spacer sleeve 9 designed as a cast part it is advisable to cast it off with projections 18.
• the finished spacer sleeve 9 consequently does not require any rework to create the transport lock.
• FIG. 2 shows the detail “z” in accordance with FIG. 1 in an enlarged representation radial projection 18 up to the screw shaft 19 of the fastening screw 8 and thus forms a frictional connection or a press fit.
• FIG. 2 also shows a caulking 21 designed as a semicircular recess on the spacer sleeve 9, which forms the projection 18, by means of a local material forming.
• the radial projection 18 is supported non-positively with a point or line contact on the lateral surface of the fastening screw 8. Due to the material elasticity or the different material strength between the spacer sleeve 9, which is preferably made of aluminum, and the fastening screw 8 made of steel, the projection 18 adjusts to the outer surface of the fastening screw 8 and deforms in the process.
• the non-positive contact of the radial projections 18 on the screw shaft 19 ensures that all components of the deflection roller 1 are held together securely.
• This transport lock 17 ensures that all components of the deflection roller 1 are held together even during transport and enables simplified assembly.
• deflection roller (1) which is assigned to a traction drive, comprising:
• annular body (4) is enclosed by an annular body (4), on the lateral surface (5) of which a traction means (6) is guided, and
• Holding means such as a fastening screw (8) inserted into the inner ring (7), which, by means of a transport lock (17), joins the deflection roller (1) together with a spacer sleeve (9) to form a structural unit, characterized in that it serves as a transport lock the spacer sleeve (9) has at least one radially inward projection (18) which secures the fastening screw (8) in a force-locking manner.
• deflection roller according to claim 1, wherein the spacer sleeve (9) is provided with symmetrically circumferentially arranged radial projections (18).
• Rolling bearing (2) fitted guide projection (11) is centered.
• deflection roller according to claim 2 wherein the radial projections (18) non-positively on a lateral surface of a screw shaft (19) of the fastening screw (8).
• deflection roller according to claim 1, wherein the radial projections (18) in an axially to the end face (15) of the spacer sleeve (9) arranged recess (16) are arranged.
• deflection roller according to claim 1 wherein the radial projections (18) have a largely semicircular shaped cross-sectional shape.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Pulleys (AREA)
• Mounting Of Bearings Or Others (AREA)
• Rollers For Roller Conveyors For Transfer (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=7655144

Family Applications (1)

Country Status (6)

Families Citing this family (48)

Family Cites Families (10)

• 2000
  • 2000-09-06 DE DE10043840A patent/DE10043840A1/de not_active Withdrawn
• 2001
  • 2001-07-14 WO PCT/EP2001/008135 patent/WO2002021005A1/de not_active Application Discontinuation
  • 2001-07-14 CZ CZ20030816A patent/CZ301115B6/cs not_active IP Right Cessation
  • 2001-07-14 EP EP01957966A patent/EP1315912A1/de not_active Withdrawn
  • 2001-07-14 AU AU2001279749A patent/AU2001279749A1/en not_active Abandoned
  • 2001-07-14 US US10/363,212 patent/US7041020B2/en not_active Expired - Fee Related

Non-Patent Citations (1)

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