WO2008006332A1 - Laschenkette für insbesondere einen fahrzeugantrieb - Google Patents
Laschenkette für insbesondere einen fahrzeugantrieb Download PDFInfo
- Publication number
- WO2008006332A1 WO2008006332A1 PCT/DE2007/001096 DE2007001096W WO2008006332A1 WO 2008006332 A1 WO2008006332 A1 WO 2008006332A1 DE 2007001096 W DE2007001096 W DE 2007001096W WO 2008006332 A1 WO2008006332 A1 WO 2008006332A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- link
- chain
- contact
- pressure
- pressure pieces
- Prior art date
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
-
- 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
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/16—V-belts, i.e. belts of tapered cross-section consisting of several parts
- F16G5/18—V-belts, i.e. belts of tapered cross-section consisting of several parts in the form of links
Definitions
- the present invention relates to a link chain for a particular vehicle drive, with a plurality of hingedly interconnected via pressure pieces link plates, the pressure pieces are transverse to the longitudinal direction of the link chain and are arranged in openings of the link plates and arranged on the pressure pieces and the link plates respective curved trained contact surfaces are along which abut the pressure pieces and link plates for power transmission to each other and arranged on the pressure pieces curved rolling surfaces are arranged along which roll the plungers for power transmission to each other and the plungers are formed asymmetrically in a running in the longitudinal direction of the link chain cross section in Druck demoeux and the contact surfaces on in Druck demoeuxeux upper and lower contact surface area between the pressure piece and link plate are provided and the opening of the link plate has an inwardly curved region.
- Such a link chain can be a toothed chain, which can be used for example in a transfer case of a motor vehicle or as a drive chain for an accessory of an internal combustion engine of the motor vehicle.
- the link chain can be designed as a toothed chain and transmits tensile force from a driving to a driven sprocket.
- a link chain as mentioned at the outset, can also be used, for example, as a tensile force transmission means in a conical disk wrap transmission for a motor vehicle or the like, and thereby transmit the tensile force by means of frictional contact between the pressure pieces and the conical disk surfaces of the two conical disk pairs.
- Such a link chain formed as a toothed chain usually has a device for clamping the silent chain in the slack side.
- This device for tensioning the toothed chain is used, for example, to avoid hitting the toothed chain due to vibration excitation and also to make the running-in process of the teeth of the toothed chain on a sprocket so that a tooth skip is avoided.
- the toothed chain undergoes a deflection such that the center of curvature of the curved segment of the toothed chain in the region of the deflection lies within the closed chain hoist.
- the mode of operation is such that a pressure piece comes into contact with a region of the lower contact surface of the adjacent chain pocket.
- the abutment of the pressure piece on the contact surface of the Nachbarkettenlasche thus takes place in an area which is already critically burdened due to the tensile force transmission from the pressure piece on the link plate.
- This range of stress concentration due to the tensile force transfer so there is still an additional superposition of forces and thus stresses due to the sudschwing felicit instead.
- This can now lead to increased wear and ultimately to premature fatigue failure.
- the fatigue strength of the toothed chain is reduced.
- the present invention is based on the object to further develop the known link chain such that the force applied to the link plate due to the stop of the pressure piece on the link plate to limit the sudschwingwinkels takes place in a less stress critical area along the opening of the link plate.
- the invention now provides to solve this problem, a link chain for a particular vehicle drive, with a plurality of hingedly interconnected via pressure pieces link plates, the pressure pieces are transverse to the longitudinal direction of the link chain and arranged in openings of the link plates and the pressure pieces and the link plates respectively curved contact surfaces are arranged along which abut the pressure pieces and the link plates for power transmission to each other and arranged on the pressure pieces curved Wälz vom are arranged along which roll the plungers for power transmission to each other and the plungers in an extending in the longitudinal direction of the link chain cross section in pressure piece height direction asymmetrical are and the contact surfaces are provided in the Druck demoeuxnraum upper and lower contact surface area between the pressure piece and link plate and the Opening the link plate has a curved inward in the area, wherein the inwardly curved portion in the cross-sectional view in Druck structurieux substantially above a by contact points abrolling pressure pads adjacent Druckmaschinepare in a straight chain center of the link chain extending contact point line is arranged.
- the invention now provides that the inwardly curved region of the opening of the link plates in Druck Roth Gleichncardi substantially above this contact point line or contact line and not only below this contact point line, as is the case with the tab chain described above.
- the advantage is achieved that the tensioning of the link plate takes place due to the stop of the pressure piece or rocker at the inwardly curved portion at a portion of the opening of the link plate, which is much less stress critical than the base of the link plate, so the area the lower contact surface of the link plate, which is anyway a region of increased stress concentration due to the power transmission between the pressure piece and link plate.
- subregions of the inwardly curved region may be arranged below the contact line, subregions or all regions of the inwardly curved region are located above, however the contact line.
- the sections of the curved area that are relevant for the contact between the pressure piece and the curved area are located above the contact line.
- the invention according to a further development is characterized by the fact that thrust pieces from this segment of the link chain have a back surface in the region of the asymmetrical design of the thrust pieces with the curved region of link plates of the segment can be brought into contact with a curved configuration of the segment whose center of curvature is outside a closed chain link of the link chain.
- the closed chain hoist now has a convex configuration in the region of the two deflections, for example, the area of the link chain acted upon by a chain tensioning device has a concave configuration and the center of curvature of this area or segment of the link chain acted upon by the chain tensioner lies outside the closed chain hoist link chain.
- the plungers and the link plates are now configured so that the plungers from this segment can be brought into contact with the back surface in the region of the asymmetrical formation of the plungers to bring about a limitation of the return swing angle of the segment with the curved portion of the link plates, so that a Increase this montschwingwinkels due to the contact of the back surface is avoided with the inwardly curved curved portion of the link plate.
- the pressure pieces are configured on the back surface which can be brought into contact with the inwardly curved region of the link plate in such a way that a planar contact is established between the back surface and the curved region of the link plate. This ensures that between the back surface in the asymmetric region of the pressure pieces and the inwardly curved portion of the link plate for power transmission, a surface is available and there is no point load between the back surface and the surface of the inwardly curved portion of the link plate. As already mentioned above, one of the tension-critical regions of the link plate lies in the region between the two lower contact surfaces of the link plate.
- the invention now also provides a link plate for forming a link chain with the properties described above, wherein the link plate has two openings for receiving two pairs of pressure pieces and each of the two openings has a region extending inwardly from a peripheral edge of the opening to form a stop surface for the back surface of a pressure piece.
- Figure 1 is a schematic representation of a segment of a known link chain in the form of a toothed chain in a scaffoldschwingvorgang.
- FIG. 2 in the right-hand view an enlarged view of a detail of Figure 1 for explaining the stop of a pressure piece on a link plate in a remindschwingvorgang and in the left half of the drawing a representation for explaining the contact point line or contact line.
- FIG. 3 shows in the left half of the drawing a representation of a known link plate according to FIG. 1 and in the right half of the drawing a representation of another known link plate according to FIG. 4, in each case for explaining zones with stress concentration;
- Figure 4 is a view similar to Figure 1 of the other known plate chain inradschwingfall ..;
- FIG. 5 shows a representation similar to the right-hand illustration in FIG. 2 of a known link chain according to FIG. 4;
- Fig. 6 is a view similar to Figure 1 with an embodiment of a link chain according to the present invention.
- FIG. 7 shows a representation similar to FIG. 2 for explaining the contact between the pressure piece and a link plate in the link chain according to the invention
- FIG. 8 is an illustration for explaining the contact and force relationships in the return oscillation process of the known link chain according to FIG. 1;
- FIG. 9 shows a representation similar to FIG. 8 for explaining the contact and force relationships of the plate-link chain according to the invention during the return oscillation process.
- Fig. 1 shows a segment of a known link chain with two adjacent link plates 1 and arranged in openings 2 pressure pieces 3.
- Known link chain takes place at a scrubschwingvorgang, which is represented by the chain link 5 shown in dashed lines and the pivoting movement in the plane of the drawing in the upward direction, a contact between the dashed lines pressure piece 4 of the dashed chain link 5 and the dashed chain link 1 illustrated in FIG Area of the designated A point of the opening 2 of the link plate 1 instead.
- Fig. 2 of the drawing shows now in the right half of the drawing an enlarged view of the area of the opening 2 with the pivoted due to the pivoting movement of the dashed chain link 5 in Fig. 1 pivoted position of the pressure piece 4.
- the pressure piece 3 belongs to the right link plate 1 in FIG 1, while the pressure piece 4 belongs to the left link plate 5 in Fig. 1 and thus at a pivoting movement of the link plate 5 at a return oscillation of the silent chain a force-transmitting contact between a lower contact surface 6 of the pressure element 4 and a lower contact surface 7 of the opening the link plate 1 sets.
- this area represents an area of chain link 1 which is in any case stress-critical.
- the link plate 1 Under the force F in the straight chain center as well as in the bent state, which occurs when the link chain is deflected on the chain wheel, the link plate 1 possesses a tension critical region 8 between an upper contact surface 11 of the link plate and an upper contact surface 12 (Fig. 1) of the pressure piece 4.
- the link plate 1 has a stress critical region 9 in the region between the lower contact surface 6 of the pressure piece 4 and the lower contact surface 7 of the link plate 1.
- Fig. 2 of the drawing shows in the left half of the drawing the contact point B between the two pressure pieces 3, 4 in the straight chain center.
- the two pressure pieces 3, 4 roll along one another along a respective rolling surface 13 and form a contact point B in the straight chain center. If now this contact point B is connected to a contact point B of a further adjacent pressure piece pair, then a contact point line or contact line 14 can be spanned by these two points B, which connects the contact points B of adjacent pressure piece pairs.
- the contact area denoted by A lies in the return oscillation case of the known link chain between the pressure piece 4 and the link plate 1 in the pressure piece height direction below the contact point straight line 14.
- Fig. 6 of the drawings now shows the remindschwingfall in a link chain 15 according to the present invention.
- the toothed chain formed according to the invention lashing chain 15 has a plurality of link plates 16 and thrust pieces 17, 18th
- the pressure pieces 17, 18 are inserted into openings 19 of the link plates 16. As shown in Fig. 7 in the left half of the drawing, the plungers 17, 18 are formed asymmetrically in Druck thoroughlyeuxncardi with a wider in the direction of the double arrow C area in the upper plunger half than in the lower plunger half.
- the opening 19 has an inwardly curved region 20, but which is arranged above the contact point line 14.
- Fig. 7 shows in the right drawing an enlarged view of the central opening 19 in Fig. 6 with the two pressure pieces 17, 18.
- the pressure piece 18 is a fixed to the opening 19 of the right link plate 16 pressure piece, while the pressure piece 17 with the corresponding opening of the dashed lines in the drawing in Fig. 6 left link plate 16 is caulked. If it now comes to a scrubschwingterrorism the plate chain of Fig. 6, this leads to a pivoting movement of the respective Ketteniasche in the direction of the double arrow D and thus to a Realtivcardterrorism the caulked pressure piece in the opening of the adjacent link plate, so in Fig. 6 of the drawing a relative movement of the pressure piece 17 relative to the opening 19 of the right link plate sixteenth
- the pressure piece 17 comes with the back surface 21 in contact with the inwardly directed portion 20 of the opening 19, so that a contact area A is set, which is shown in the right drawing in Fig. 7 and in Druck thoroughlyeuxncardi according to the double arrow E above the Contact point line 14 is located.
- Fig. 8 shows the contact force F 1 due to a scrubschwingmoments M R Q CK the known link chain of FIG. 1 of the drawing.
- the force Fi occurs in the contact area designated A in FIG. 1 at the lower abutment surfaces 6, 7 of the pressure piece 4 and the link plate 1, and thus in stress-critical areas 9 according to FIG. 3 of the drawing.
- Fig. 9 shows in a direct comparison here the conditions in the plate-link chain according to the invention.
- the force F 2 is significantly smaller than the force Fi, in the present case, the force F 1 is 2.3 times as large as the force F 2 .
- the displacement of the contact portion A thus provides for the same swing-back torque more than a halving 'of force in the abutment between the pressure piece 17 and the plate opening 19. Accordingly, the stress of the link plate by the abutment is reduced and thus increase their service life and hence the overall life of the plate link chain.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chain Conveyers (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112007001575T DE112007001575A5 (de) | 2006-07-13 | 2007-06-21 | Laschenkette für insbesondere einen Fahrzeugantrieb |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006032409 | 2006-07-13 | ||
DE102006032409.9 | 2006-07-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008006332A1 true WO2008006332A1 (de) | 2008-01-17 |
Family
ID=38578438
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2007/001096 WO2008006332A1 (de) | 2006-07-13 | 2007-06-21 | Laschenkette für insbesondere einen fahrzeugantrieb |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112007001575A5 (de) |
WO (1) | WO2008006332A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014209384A1 (en) | 2013-06-28 | 2014-12-31 | Amgen Inc. | Methods for treating homozygous familial hypercholesterolema |
DE102012112042B4 (de) | 2011-12-22 | 2019-06-27 | Tsubakimoto Chain Co. | Geräuscharme Kette |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0874938A (ja) * | 1994-09-02 | 1996-03-19 | Borg Warner Automot Kk | 動力伝達用チェーン |
US5651746A (en) * | 1994-08-29 | 1997-07-29 | Borg-Warner Automotive, K.K. | Power transmission chain |
US6277046B1 (en) * | 1999-03-03 | 2001-08-21 | Tsubakimoto Chain Co. | Silent chain |
WO2006058529A1 (de) * | 2004-12-02 | 2006-06-08 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Laschenkette für insbesondere einen fahrzeugantrieb |
WO2007076778A1 (de) * | 2005-12-21 | 2007-07-12 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Laschenkette für insbesondere einen fahrzeugantrieb |
-
2007
- 2007-06-21 WO PCT/DE2007/001096 patent/WO2008006332A1/de active Application Filing
- 2007-06-21 DE DE112007001575T patent/DE112007001575A5/de not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5651746A (en) * | 1994-08-29 | 1997-07-29 | Borg-Warner Automotive, K.K. | Power transmission chain |
US5651746B1 (en) * | 1994-08-29 | 2000-01-04 | Borg Warner Automotive Kk | Power transmission chain |
JPH0874938A (ja) * | 1994-09-02 | 1996-03-19 | Borg Warner Automot Kk | 動力伝達用チェーン |
US6277046B1 (en) * | 1999-03-03 | 2001-08-21 | Tsubakimoto Chain Co. | Silent chain |
WO2006058529A1 (de) * | 2004-12-02 | 2006-06-08 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Laschenkette für insbesondere einen fahrzeugantrieb |
WO2007076778A1 (de) * | 2005-12-21 | 2007-07-12 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Laschenkette für insbesondere einen fahrzeugantrieb |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012112042B4 (de) | 2011-12-22 | 2019-06-27 | Tsubakimoto Chain Co. | Geräuscharme Kette |
WO2014209384A1 (en) | 2013-06-28 | 2014-12-31 | Amgen Inc. | Methods for treating homozygous familial hypercholesterolema |
Also Published As
Publication number | Publication date |
---|---|
DE112007001575A5 (de) | 2009-04-09 |
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