EP1969252A1 - Maillon denté pour chaîne à maillons dentés - Google Patents

Maillon denté pour chaîne à maillons dentés

Info

Publication number
EP1969252A1
EP1969252A1 EP06828619A EP06828619A EP1969252A1 EP 1969252 A1 EP1969252 A1 EP 1969252A1 EP 06828619 A EP06828619 A EP 06828619A EP 06828619 A EP06828619 A EP 06828619A EP 1969252 A1 EP1969252 A1 EP 1969252A1
Authority
EP
European Patent Office
Prior art keywords
toothed
contour
incision
curvature
toothed link
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Withdrawn
Application number
EP06828619A
Other languages
German (de)
English (en)
Inventor
Olga Ispolatova
Wolfgang Oberle
Michael Pichura
Marcus Junig
Anton Simonov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Buehl Verwaltungs GmbH
LuK Lamellen und Kupplungsbau GmbH
Original Assignee
LuK Lamellen und Kupplungsbau Beteiligungs KG
LuK Lamellen und Kupplungsbau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LuK Lamellen und Kupplungsbau Beteiligungs KG, LuK Lamellen und Kupplungsbau GmbH filed Critical LuK Lamellen und Kupplungsbau Beteiligungs KG
Publication of EP1969252A1 publication Critical patent/EP1969252A1/fr
Withdrawn legal-status Critical Current

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
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/02—Driving-chains
    • F16G13/04—Toothed chains

Definitions

  • the present invention relates to a toothed plate for a toothed link chain, wherein the toothed plate comprises two teeth with a tooth flank and an incision between the teeth.
  • toothed plates for toothed link chains there is an incision in the plane of symmetry. This incision is described by the tooth flanks and by a transition radius. The transition is described in the prior art only by a single radius. Furthermore, the tooth flanks and he transition radius tangentially connected to each other, so the transition radius goes into the tooth flanks so that at the junction a common tangent is present.
  • Such toothed plates are known from US Pat. No. 5,372,554 and US Pat. No. 5,588,926.
  • a disadvantage of known tooth lugs according to the prior art is that high voltages can occur in the operation of the chain in the region of the incision.
  • An object of the present invention is therefore to provide a toothed plate for a toothed link chain, in which occurring stresses in the region of the incision are smaller.
  • a toothed plate for a toothed link chain wherein the toothed plate comprises two teeth each with an inner flank and an incision between the teeth, wherein a transition of at least one of the inner flanks on the incision has a convex curvature.
  • convex curvature is understood to mean any shape of the curvature in which the center of the curve of a tangential circle lies against the surface of the toothed plate at least over a partial region within the toothed plate.
  • the convex curvature can be smooth (there is no sudden change in the tangents at two arbitrarily close points), but can also include an edge. It is preferably provided that both transitions of the inner flanks to the incision have a convex curvature.
  • the incision has a concave curvature with a variable radius of curvature.
  • the center of the curve can be constantly outside the toothed plate. Under variable radius of curvature is understood here that on the contour of the incision different tangential circles can be placed with corresponding centers of curvature to the contour of the incision.
  • variable radius of curvature consists of discrete radii, that is to say a sequence of circular sections.
  • the transitions between the discrete radii may be rounded or may include an edge.
  • variable radius of curvature changes constantly. This can be done for example by a curve which is described by so-called splines.
  • Fig. 2 is an enlargement of a half of a tooth flank
  • Fig. 1 shows a toothed plate 1 for a toothed plate chain in the side view.
  • the toothed plate 1 comprises a base body 2 on which two teeth 3 and 3 'are arranged.
  • the main body are further two holes 4 and 4 'for receiving jaws, which connect the individual toothed plates to toothed plate packages, introduced.
  • the bores generally have no circular inner contour but are adapted in their inner contour to the outer contour of the wobblers received therein.
  • the cradles form a hinge between adjacent toothed lug sets.
  • the joint allows kinking the chain about an axis through the respective joints perpendicular to the chain running direction, this is indicated in Fig. 1 by a double arrow, thus an axis which protrudes in the representation of Fig.
  • the teeth 3 each have tooth flanks with outer flanks 5 and 5 'and inner flanks 6 and 6', respectively.
  • the outer flanks 5 and 5 'and inner flanks 6 and 6' have a convex profile and go in a transition point 7 or T into an incision 8.
  • the incision 8 may have different contours, is shown in Fig. 1 for a Contour 9 according to the prior art, on the other contours 10 and 11 according to the invention.
  • the contour 9 of the incision 8 according to the prior art at the transition points 7 or T smoothly passes over into the profile 6 or 6 'of the inner flanks ,
  • a in transition point 7 and T to the profile of the inner edges 6, 6 'placed tangent is identical to a 7 in the transition point 7 or 7' to the contour 9 of the incision 8 tangent.
  • two exemplary embodiments 10, 11 for contours of the incision 8 according to the invention are shown. Shown by a dashed line is a first embodiment 10 of the contour according to the invention, shown as a solid line, a second embodiment 11 of a contour according to the invention.
  • the contours 10 and 11 according to the invention no longer smoothly merge into the profile of the inner flanks 6, 6 'in the transition points 7 and T, but instead form an edge 16 (the edge 16 can also be a crease in the two-dimensional representation of FIG to 3).
  • the result of the edge 16 is that at least regionally, there is a convex curvature in the region of the transition point 7 or T.
  • the convex curvature may be implemented as a (sharp) edge 16, but may also be a smooth transition, for example in the form of a circular arc or a spline or the like.
  • FIG. 2 shows the left-hand part of the toothed lug shown in FIG. 1 up to a symmetry plane 12 shown as a dashed line in FIG. 1.
  • Fig. 1 is further shown the distance between a back plate 15, this is in the illustration of FIG. 1, the upper straight boundary of the toothed plate, and the tab back 15 nearest point of the incision 8.
  • the distances are here as Q1 for a contour 9 referred to in the prior art and Q2 for a contour 10 according to the first inventive embodiment.
  • the distance Q can be changed by suitable choice of the contour 10 (e.g., like the contour 11).
  • the tangent to the contours 10, 11 is in each case perpendicular to the plane of symmetry 12.
  • Fig. 2 the left in Fig. 1 part of the toothed plate 1 is shown to the plane of symmetry 12.
  • the area surrounded by a circle A is shown enlarged again in FIG.
  • the transition point 7 is also designated in FIG. 3 as point P1 with the coordinates X 1 and Y 1 (according to the XY coordinate system as shown in FIG. 2).
  • P2 The intersection of the contour 9 of the prior art with the plane of symmetry 12
  • P3 the intersection of the contour 10 according to the invention designated as P3 with the coordinates X2 and Y3.
  • the X coordinate is the same since this is given by the axis of symmetry 12.
  • the tangent at point P1 to the contour of the prior art of the incision 8 is identical to the tangent to the inner edge 6, the tangent 13 to the inventive contour 10 of the incision 8 in the transition point 7 forms In contrast, with the point 7 at the inner edge 6 set tangent 13 an angle ⁇ (Greek alpha).
  • a positive angle ⁇ drawn in FIG. 3 causes a convex curvature of the transition area about the transition point 7.
  • FIG. 4 shows the contour 10 according to FIG. 3 in another illustration.
  • the inner edge 6 and the transition point 7 as well as the contour 10 of the incision 8 are shown.
  • Dotted lines are respectively drawn to the contour 10.
  • a tangential circle with the radius R1 ' is located near the point of intersection of the contour 10 with the Symmetry axis 12 and a tangential in the vicinity of the transition point 7 with the radius R2 '.
  • the centers M1 'for the tangentia circle with the radius R1' and the center M2 'for the tangential circle with the radius R2 do not coincide.
  • the radii R1 'and R2' as well as the all intervening any other tangential circles are different.
  • Such a curve can be represented for example as a so-called spline, in particular B-spline.
  • the contour 10 'according to the invention here has a sequence of circular sections of different radii.
  • the contour 9 according to the prior art is shown.
  • R3 for the Circular arc between the points 10.2 and the point 10.3 and R4 for the circular arc section between the points 10.3 and the transition point 7 denotes.
  • the respective circular arc sections include centers M1 to M4 with the same index as the respective radius. As can be seen, the coordinates of the circle centers change in particular.
  • the radii, in the present embodiment M1 to M4, also remain constant. It is preferably provided that the radii of the radius R1 up to the radius R4 are each smaller. Also in the embodiment of FIG. 5, a positive angle ⁇ occurs according to the definition of the angle ⁇ in FIG. 3. For comparison, the constant radius R of the contour 9 is shown in the prior art.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)
  • Prostheses (AREA)

Abstract

Maillon denté (1) pour chaîne à maillons dentés, le maillon denté comprenant deux dents (3/3') ayant chacune un flanc intérieur (6,6') ainsi qu’une entaille (8) entre les dents, une transition d’au moins un flanc intérieur vers l’entaille présentant une courbure convexe.
EP06828619A 2005-12-24 2006-12-06 Maillon denté pour chaîne à maillons dentés Withdrawn EP1969252A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005062310 2005-12-24
PCT/DE2006/002168 WO2007076759A1 (fr) 2005-12-24 2006-12-06 Maillon denté pour chaîne à maillons dentés

Publications (1)

Publication Number Publication Date
EP1969252A1 true EP1969252A1 (fr) 2008-09-17

Family

ID=37891484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06828619A Withdrawn EP1969252A1 (fr) 2005-12-24 2006-12-06 Maillon denté pour chaîne à maillons dentés

Country Status (6)

Country Link
EP (1) EP1969252A1 (fr)
JP (1) JP2009521648A (fr)
KR (1) KR20080077348A (fr)
CN (1) CN101346562B (fr)
DE (1) DE112006003355A5 (fr)
WO (1) WO2007076759A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007002046U1 (de) 2007-02-12 2008-06-19 Iwis Motorsysteme Gmbh & Co. Kg Nachgeschnittene Zahnlasche
US9587709B2 (en) * 2014-10-07 2017-03-07 Schaeffler Technologies AG & Co. KG Link for inverted tooth chain with optimized shape for increased strength

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191009295A (en) * 1910-04-16 1911-03-09 Henry William Allingham Improvements in Drive Chains.
GB302368A (en) * 1927-12-16 1929-07-04 Morse Chain Co Improvements relating to drive chains
JPH01279135A (ja) * 1988-04-28 1989-11-09 Mitsuboshi Belting Ltd 歯付ベルト及びこれを用いた駆動装置
US5423724A (en) * 1991-10-17 1995-06-13 Borg-Warner Automotive, Inc. Interlaced single pin rocker joint chain
US5372554A (en) 1992-08-31 1994-12-13 Borg-Warner Automotive K.K. Rocker joint chain with crescent shaped apertures
US5445570A (en) * 1994-02-15 1995-08-29 Borg-Warner Automotive, Inc. Chain guide link
US5588926A (en) 1995-04-20 1996-12-31 Borg-Warner Automotive, Inc. Self-guided chain assemblies
JP3108417B1 (ja) * 2000-04-19 2000-11-13 株式会社椿本チエイン サイレントチェーン伝動装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007076759A1 *

Also Published As

Publication number Publication date
JP2009521648A (ja) 2009-06-04
WO2007076759A1 (fr) 2007-07-12
KR20080077348A (ko) 2008-08-22
DE112006003355A5 (de) 2008-09-18
CN101346562A (zh) 2009-01-14
CN101346562B (zh) 2011-07-06

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Inventor name: PICHURA, MICHAEL

Inventor name: ISPOLATOVA, OLGA

Inventor name: JUNIG, MARCUS

Inventor name: OBERLE, WOLFGANG

Inventor name: SIMONOV, ANTON

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