CN101346562B

CN101346562B - Toothed link for a toothed link chain

Info

Publication number: CN101346562B
Application number: CN2006800490470A
Authority: CN
Inventors: O·伊斯波拉托瓦; W·奥伯勒; M·皮丘拉; M·尤尼格; A·西蒙诺夫
Original assignee: Schaeffler Technologies AG and Co KG
Current assignee: Schaeffler Technologies AG and Co KG
Priority date: 2005-12-24
Filing date: 2006-12-06
Publication date: 2011-07-06
Anticipated expiration: 2026-12-06
Also published as: KR20080077348A; DE112006003355A5; CN101346562A; EP1969252A1; JP2009521648A; WO2007076759A1

Abstract

The invention relates to a toothed link (1) for a toothed link chain, wherein the toothed link comprises two teeth (3/3') with in each case one inner flank (6,6') and a notch (8) between the teeth. In this toothed link (1), a transition from at least one of the inner flanks to the notch has a convex curvature.

Description

Be used for the profile of tooth contact pin of inverted tooth chain

Technical field

The present invention relates to a kind of profile of tooth contact pin, be used for inverted tooth chain, wherein, this profile of tooth contact pin comprises two tooth and recessed mouthfuls of being between these teeth with flank.

Background technique

In symmetry plane, there be recessed mouthful in the profile of tooth contact pin that is used for inverted tooth chain.Should describe by flank and by knuckle radius by recessed mouth.Transition part is only described by a unique radius according to prior art.In addition, flank and knuckle radius are connected to each other tangently, and promptly knuckle radius carries out the transition to flank like this, make to have a public tangent line on connection part.This profile of tooth contact pin is by US-5, and 372,554 and US5,588,926 is known.

Shortcoming according to the known profile of tooth contact pin of prior art is, can produce heavily stressed in recessed mouthful zone in chain work.

Summary of the invention

Therefore, task of the present invention is, a kind of profile of tooth contact pin that is used for inverted tooth chain is provided, and is in this profile of tooth contact pin, very little at the stress of recessed mouthful region generating.

This problem solves by a kind of profile of tooth contact pin, this profile of tooth contact pin is used for inverted tooth chain, wherein, this profile of tooth contact pin comprises two tooth and recessed mouthfuls of being between these teeth of respectively having an inner side surface, wherein, from these inner side surfaces at least one to arching portion that recessed mouthful transition part has convex.

Arching portion for convex is interpreted as the arbitrary shape of arching portion at this, and wherein, the center of curve point of the circle of contact on the surface of profile of tooth contact pin is positioned at profile of tooth contact pin inside at least on the part area.The arching portion of convex can be level and smooth (not existing the jump type of tangent line of the point at two places that almost exist together arbitrarily to change) at this, but also can comprise a rib.The preferred proposition, inner side surface is to arching portion that two transition parts of recessed mouth have convex.

In a further configuration of the present invention, propose, recessed mouthful of arching portion with spill, the arching portion of this spill has the radius of curvature of variation.Center of curve point can be in profile of tooth contact pin outside all the time at this.Be interpreted as at this that for the radius of curvature that changes on recessed mouthful profile, the different circle of contacts with corresponding centre of curvature point can be positioned on the profile that abuts against recessed mouthful.

Propose in a further configuration of the present invention, the radius of curvature of variation is made up of some discrete radiuses, promptly is a succession of round section.But the transition part between the discrete radius is at this rounding or can comprise rib.

Scheme can propose as an alternative, and the radius of curvature of variation changes continuously.This for example can realize that the so-called batten of this curve negotiating is described by a curve.

Starting described problem also comprises the flat link chain of tooth form according to the invention contact pin and solves by a kind of speed changer with tooth form according to the invention flat link chain by a kind of.

Brief Description Of Drawings

Describe embodiments of the invention in detail by means of accompanying drawing below.Accompanying drawing is represented:

Fig. 1 has recessed mouthful differently contoured profile of tooth contact pin;

The zoomed-in view of half one of Fig. 2 flank;

The zoomed-in view in the zone of Fig. 3 to Fig. 5 Fig. 2 concave inlet.

Embodiment

Fig. 1 shows the side view of the profile of tooth contact pin 1 that is used for inverted tooth chain.Profile of tooth contact pin 1 comprises a matrix 2, this matrix be provided with two

teeth

3 and 3 '.In addition, in matrix, be processed with two

holes

4 and 4 that are used to receive wobble-member ', these wobble-members make each profile of tooth contact pin connect into profile of tooth contact pin group.The hole does not have circular interior profile usually, but the profile aspect is suitable with the external frame that is received in wobble-member wherein within it.Wobble-member forms hinge between adjacent profile of tooth contact pin group.Hinge can realize that chain winds perpendicular to the chain direct of travel by the axis of hinge separately, the axis bending therefore stretched from this drawing plane perpendicular to the drawing plane in the view of Fig. 1, and this chain direct of travel is represented by double-head arrow in Fig. 1.Tooth 3 respectively has flank, described flank have outer side surface 5 or 5 ' and

inner side surface

6 or 6 '.Outer side surface 5 or 5 ' and inner side surface 6 or 6 ' have convex type wide and transition point 7 or 7 ' on carry out the transition to recessed mouthful 8.Recessed mouth 8 can have differently contoured, shows the profile 9 according to prior art among Fig. 1 on the one hand, shows on the other hand according to profile 10 of the present invention and 11.As can be seen, according to recessed mouthfuls 8 profile 9 of prior art transition point 7 or 7 ' on carry out the transition to smoothly the type of inner side surface wide 6 or 6 ', transition point 7 or 7 ' on inner side surface 6,6 ' the wide tangent tangent line of type with transition point 7 or 7 ' on identical with the tangent tangent line of recessed mouthful 8 profile 9.Recessed mouthful 8 two

embodiments

10,11 according to profile of the present invention have been shown among Fig. 1 in addition.Be shown in broken lines first embodiment 10, shown second embodiment 11 according to profile of the present invention as solid line according to profile of the present invention.According to profile 10 of the present invention and 11 transition point 7 or 7 ' on carry out the transition to no longer smoothly inner side surface 6,6 ' the type exterior feature, but form a rib 16 (also can be called as bending in the two-dimensional view of rib 16 at Fig. 1 to Fig. 3) at this.Rib 16 make ground, zone at least transition point 7 or 7 ' the zone in have the arching portion of convex.The arching portion of convex can be configured to (sharp) rib 16, but also can be the portion that seamlessly transits that for example is the form of circular arc or batten or analog.Describe inner side surface 6,6 ' and the configuration of transition region between recessed mouthful 8 in detail by means of Fig. 2 and Fig. 3.At this, Fig. 2 shows the left part of the symmetry plane 12 that conduct is shown in dotted line in Fig. 1 of the contact pin of profile of tooth shown in Fig. 1.

In addition, the distance between the nearest point of contact pin back 15 of contact pin back 15 and recessed mouthful 8 has been shown among Fig. 1, this contact pin back is the straight top boundary of profile of tooth contact pin in the view of Fig. 1.Described distance is labeled as the Q1 and the Q2 that is used for according to the profile 10 of first embodiment of the invention that is used for according to the profile 9 of prior art at this.Can change by selecting profile 10 (for example as profile 11) suitably apart from Q.The tangent line of

profile

10,11 is respectively perpendicular to symmetry plane 12 in symmetry plane 12.

The left part up to symmetry plane 12 of profile of tooth contact pin 1 has been shown among Fig. 2.By means of Fig. 2 transition region in transition point 7 both sides is described especially between inner side surface 6 and recessed mouthful 8.Show the zone of getting up among Fig. 3 once more enlargedly with circle A frame.Transition point 7 in Fig. 3, also be labeled as some P1 with coordinate X1 and Y1 (according to as paint among Fig. 2 into the X-Y system of coordinates).Intersection point according to the profile 9 of prior art and symmetry plane 12 is labeled as the some P2 with coordinate X2 and Y2 at this, is labeled as the some P3 with coordinate X2 and Y3 according to the intersection point of profile 10 of the present invention.For a P2 and P3, the X coordinate is identical, because these points provide by the axis of symmetry 12.There is difference according to the profile 9 of prior art and between aspect the value of the coordinate Y that can change arbitrarily according to profile 10 of the present invention.As can be directly from seeing Fig. 3, the tangent line according to the profile of prior art at some P1 fovea superior inlet 8 is identical with the tangent line of inner side surface 6, relative therewith, transition point 7 fovea superiors inlet 8 according to the tangent line 13 of profile 10 of the present invention with on point 7, form angle α (Greek alpha) with the tangent tangent line 13 of inner side surface 6.As paint among Fig. 3 into positive angle α cause that transition region is around the arching of transition point 7 convexs ground.Fig. 4 shows profile 10 according to Fig. 3 with another view.Can see the profile 10 of inner side surface 6 and transition point 7 and recessed mouth 8.Respectively show the circle of contact of profile 10 as dotted line.For example enumerated one near the intersection point of the profile 10 and the axis of symmetry 12, have radius R 1 ' the circle of contact and one near transition point 7, have radius R 2 ' the circle of contact.As can directly seeing, have radius R 1 ' the central point M1 ' of the circle of contact do not overlap with the central point M2 ' of the circle of contact with radius R 2.In addition, radius R 1 ' different with the radius of R2 ' and all therebetween any other circle of contact.This curve for example can be expressed as so-called batten, especially B batten.

Scheme as an alternative, curve can be formed by some discrete single radiuses that joins successively, and this is as shown in Figure 5.View form among Fig. 5 is basically corresponding to the view of Fig. 4.With different, according to profile 10 of the present invention ' have the round section of a succession of different radii at this according to the profile among the embodiment of Fig. 4 10.For relatively, also paint into according to the profile 9 of prior art.Profile 10 ' the comprise transition part 10.1,10.2 and 10.3 between the circular arc with different radii, these radiuses this be labeled as profile 10 ' and the R1 of the intersection point of the axis of symmetry 12 and the circular arc between the transition point 10.1, between the point 10.1 and 10.2 circular arc R2, put the R3 of the circular arc between 10.2 and 10.3 and put 10.3 and transition point 7 between the R4 of circular arc section.Have with radius is identical separately following target central point M1 to M4 and belong to separately circular arc section.As can be seen, the changes in coordinates of especially round central point.At this, also can keep constant for the radius of M1 to M4 in the present embodiment.The preferred proposition, radius diminishes respectively up to radius R 4 from radius R 1.And in the embodiment of Fig. 5, form one according to Fig. 3 in the positive angle α of definition of angle α.For relatively, paint into the constant in the prior art radius R of profile 9.

The reference number inventory

1 profile of tooth contact pin

2 matrixes

3 teeth

4,4 ' hole

5 outer side surfaces

6,6 ' inner side surface

7,7 ' transition point

8 recessed mouthfuls

9 profiles according to prior art

10 first embodiments' profile

10.1,10.2 ... point on the profile 10

11 second embodiments' profile

12 symmetry planes

13 tangent lines

14 tangent lines

15 contact pin back

16 ribs

L chain direct of travel

R, R1 ... radius

M, M1 ... the central point of the circle of contact

Claims

1. profile of tooth contact pin (1), be used for inverted tooth chain, wherein, this profile of tooth contact pin (1) comprises that two respectively have an inner side surface (6,6 ') tooth (3,3 ') and recessed mouthful (8) that are between these teeth (3,3 '), it is characterized in that: at least one is to arching portion that transition part that should recessed mouthful (8) has convex from these inner side surfaces (6,6 '); The arching portion that should recessed mouthful (8) has spill, the arching portion of this spill have variation radius of curvature (R1 ', R2 ', R1, R2, R3, R4); And the arching portion of this convex comprises a rib (16); The radius of curvature of described variation continuously (R1 ', R2 ') changes.

2. flat link chain comprises the profile of tooth contact pin according to claim 1.

3. speed changer has the flat link chain according to claim 2.