CN100529462C

CN100529462C - High performance silent chain

Info

Publication number: CN100529462C
Application number: CNB2005100860780A
Authority: CN
Inventors: R·P·布特费尔德
Original assignee: BorgWarner Inc
Current assignee: BorgWarner Inc
Priority date: 2004-07-20
Filing date: 2005-07-19
Publication date: 2009-08-19
Anticipated expiration: 2025-07-19
Also published as: KR20060047559A; CN1724894A

Abstract

A hybrid roller/silent chain of the present invention has the wear resistance of a roller chain combined with the noise performance of a silent chain. This is accomplished with the use of transverse load-bearing elements that allow increased bearing area for the articulating members of the chain by allowing load to be transmitted through both the inside and outside diameter of the element in the same plane. In some embodiments, the transverse load-bearing elements are bushings. In other embodiments, the elements are projections extending from non-guide row inside links.

Description

High performance silent chain

Quoting of related application

The application is that the copending application sequence number of submitting, be entitled as " improved silenet chain " on August 28th, 2003 is 10/650,539 part continuation application.Under 35USC ξ 120 joint clauses, require the preference of original U.S. Patent application thus, and above-mentioned application is incorporated this paper into as a reference.

Technical field

The present invention relates to the silenet chain field.More specifically, the present invention relates to having the improvement of common silenet chain now.More specifically, the present invention relates to the improvement to the existing common silenet chain with lateral load load bearing element, described lateral load load bearing element makes it possible to increase the loaded area of the articulated element of chain.

Background technique

Roller chain and silenet chain are known in the field.Two types chain all has known application in automotive industry.

U. S. Patent 6,450,911 propose a kind of periphery surface of silenet chain, and described silenet chain comprises by the hinged multi-row staggered link plate of pintle.Each link plate has a pair of tooth and a pair of pin-and-hole.Described link plate also has a tubular portion of giving prominence to and limit a periphery surface of each pin-and-hole from a surface of described link plate continuously.Described tubular portion has a height that equals the thickness of link plate substantially.Thereby this tubular portion strengthens the area of contact between described plate and the pintle and suppresses wearing and tearing to connecting pin.In addition, this tubular portion makes described plate can keep enough rigidity and intensity and does not narrow each pin-and-hole and the outboard flanges of corresponding tooth or the web width between the medial flange.This silenet chain weight on the whole is lighter relatively.Yet, U. S. Patent 6,450, there is shortcoming in the periphery surface in 911, comprises that the width of every chain has increased.In addition, it can require more complicated manufacture process to make chain link plate inherently.

U. S. Patent 6,485,385 propositions jointly constitute three structure members of the single guiding chain link of a silenet chain.Two guide plates, be arranged at least one guiding link plate between the described guide plate, and two connector pins that press fit over the circle in the described guide plate are configured, to satisfy representation (Pm+Dm-Dp`)-Pg`=0.Pm is by the represented link plate pitch of distance between the pin-and-hole center in the guiding link plate.Dm is the inside diameter of the pin-and-hole in the guiding link plate.Dp` is the outside diameter that is force-fitted between the connector pin of the circle in the every guide plate.Pg` has guide plate pitch after the represented press fit of distance between the pin-and-hole center in the every guide plate of round connector pin by press fit.In the silenet chain that assembles, the epitaxial part of connector pin of each circle has itself and the inner periphery surface and the contacted external peripheral surface of articulated links of the pin-and-hole that cooperates that guides link plate.Articulated links moves and produces the bearing area with respect to pin.Yet, there is shortcoming with the inner periphery surface of pin-and-hole of the cooperation of guiding link plate and the external peripheral surface of the pin that articulated links contacts, comprise that the load-bearing surface zone is limited to above-mentioned contact.

The silenet chain with better performance is constantly pursued in chain industry.Contact surface or load-bearing surface that the chain hinging par that silenet chain is had increase is arranged in the field.

The sectional view of a kind of sleeve type roller chain shown in Figure 1.Owing between pin 14 and sleeve 12, have the supporting of overall length, so roller chain typically has very good wear resistance.Because pin 14 rotates in sleeve 12, therefore selling the 14 whole length along sleeve 12 is subjected to good supporting.Closely cooperating between pin 14 and sleeve 12 provides excellent abrasive resistance.This roller chain also comprises two types chain link 16 and chain link 18.One type chain link 16 is known as sleeve row chain link.The chain link 18 of another kind of type is known as a kind of pin row chain link.

The noise that chain transmission produces is from various sources.In the roller chain transmission device, noise partly is to be caused by chain when beginning to mesh and the collision impact between the sprocket wheel.Wherein, the noise level that impacts in other words of the loudness of impact is subjected to the influence of the striking velocity between chain and the sprocket wheel that engages this chain.The specific moment in other words in the incremental time quality of the chain roller of contact sprocket wheel also influence noise level.

Thereby people have carried out many effort and have reduced total noise level and reduce pitch frequency noise in the automobile chain transmission and distribute and drop to minimum level with the undesirable influence pure tone.Silenet chain typically is used for dropping to minimum automobile to noise and uses.Improve chain link flank shape and the known meeting of profile and reduce noise level significantly.

Roller chain is used for automobile and uses.Yet roller chain is limited to usually that to be used in that noise takes place be not in the main application of considering.Roller chain is characterised in that on the wear resistance of being showed by its parts.

A kind of typical silenet chain is shown among Fig. 2 A and Fig. 2 B.Silenet chain comprises guiding chain link row and the non-guiding chain link row that alternately links together with a kind of circular pattern.Typically, the guiding chain link row each all have a pair of guide plate 15 and be arranged at least one inner links plate 13 between the guide plate.Each all has isolated pin-and-hole of a pair of traffic direction along silenet chain or hole 19 guide plate 15 and inner links plate 13.Non-guiding chain link row typically has two or more inner links plates 11.Similar in appearance to guide plate 15 and guiding row inner links plate 13, each all has a pair of isolated pin-and-hole 19 non-guiding row inner links plate 11.Guide plate 15, guiding row's inner links plate 13 and non-guiding row inner links plate 11 pass the connector pin 17 of pin-and-hole 19 of lateral alignment of non-guiding row inner links plate 11 and guiding row inner links plate 13 by an insertion hinged.Connector pin 17 can be the pin or a pair of rocker joint pin of a circle.

Because relative between non-guiding row inner links plate and the pin lacked and the bearing area of low-quality, silenet chain usually wears no resistance.Operational loaded length is less than the operational loaded length in the roller chain with same overall width significantly.And in silenet chain, load-bearing surface typically is made of a plurality of inner links hole, rather than the continuous sleeve bore hole that uses in a roller chain.

An exemplary purposes of silenet chain is that the joggle(d) joint by chain and sprocket wheel is combined in transferring power between a driving sprocket wheel and the driven sprocket.Lift a concrete instance, silenet chain draws a cam sprocket wheel of pulling around a crankshaft sprocket and automobile, perhaps centers on the sprocket wheel of a transfer unit.When silenet chain begins to mesh sprocket wheel, because the generation noise that between the flank of the flank surface of each link plate and sprocket wheel, bumps.

A known advantage of silenet chain is because NVH (noise-vibration-roughness (the harshness)) characteristic that the joint of silenet chain flank on sprocket wheel has improved.On the other hand, discuss as preamble, roller chain also has the advantage of himself.Being appreciated that desirable is with a kind of unique mode the favorable characteristics of a roller chain and a silenet chain to be combined so that a kind of improved silenet chain to be provided, thereby in conjunction with the NVH characteristic of the wear-resistant property and the silenet chain of roller chain.Desirable in addition is to provide good wear-resistant property by increase total carrying zone between the hinging par of chain for roller chain.

Summary of the invention

A kind of improved silenet chain that has than good wear-resistant property of roller chain and the wear-resistant property more much better than conventional silenet chain is provided.Provide a kind of noise-vibration-roughness (NVH) characteristic with conventional silenet chain improvement silenet chain.Improvement that a kind of and conventional silenet chain has similar weight is provided silenet chain.

Chain of the present invention comprises a kind of chain, comprising:

A plurality of chain links, each chain link comprises a pair of link aperture, each link aperture has a bore dia and an internal surface of hole;

A plurality of lateral load load bearing elements, each part comprise that one has part external diameter and part outer surface and the hole in piece part with a part internal diameter and part internal surface, and each described part passes at least one link aperture; With

A plurality of columniform pins, each pin comprises a pin external diameter and pin outer surface, each pin passes at least one link aperture, and pass at least one hole in piece part, it has the bearing area of the part internal surface of contact pin outer surface and lateral load load bearing element, the pin external diameter is less than the part internal diameter of lateral load load bearing element, thereby the pin outer surface can move with respect to the part internal surface of lateral load load bearing element, and the pin outer surface is supported the load of lateral load load bearing element;

It is characterized in that, the bore dia of at least one chain link is greater than the part external diameter of lateral load load bearing element, it has the bearing area of the bore dia of the part outer surface of contact lateral load load bearing element and at least one chain link, thereby the part outer surface of lateral load load bearing element can move with respect to the internal surface of hole of chain link, described bore dia is greater than the part external diameter of lateral load load bearing element, thus the support chain load;

Thereby pin outer surface pressured and the part internal surface of the hinged lateral load load bearing element that passes and the internal surface of hole of a plurality of chain links, and the part outer surface of lateral load load bearing element is pressured and the internal surface of hole of the bore dia of hinged at least one chain link, bore dia is greater than the part external diameter of lateral load load bearing element, make the part internal surface and the part outer surface of lateral load load bearing element all in a plane of chain link, carry a load, can increase the bearing area given chain width.

In one embodiment of the invention, described a plurality of chain links also comprise a plurality of first chain links, a plurality of second chain link, and a plurality of outer links.Each lateral load load bearing element passes at least one second link aperture.Each pin passes at least one outer links hole.Described chain link is put by arranging, and replaces between first row who comprises at least one first chain link and second row who is included at least one outer links on each edge of chain and at least one second chain link.First chain link and lateral load load bearing element are fixed and make and can not relatively move between first chain link and lateral load load bearing element.The diameter of second link aperture makes the part outer surface can move with respect to the second link aperture internal surface greater than the part external diameter.Outer links bore dia and pin diameter closely cooperate to make and can not relatively move between the side chain knothole internal surface and pin outer surface outside.This layout makes described chain be made of second row who is fixed to first row of first chain link on the lateral load load bearing element and second chain link that can move rigidly and is fixed to the outer links on the pin on the lateral load load bearing element who replaces, and wherein first row and second arranges the direction that follows into and is hingedly connected together.

First row preferably is non-guiding row.First chain link is the chain link of contrary flute profile preferably.The preferably contrary flute profile chain link of outer links.Outer links preferably guides chain link.The preferably contrary flute profile chain link of second chain link.In some embodiments, second chain link is along a center line location of chain.In one of embodiments of the present invention, second chain link is non-return center guiding chain link.

In some embodiments of the present invention, the lateral load load bearing element is a sleeve.In other mode of execution, first chain link also comprises one first chain link body, and the described first chain link body comprises a pair of first link aperture.Each first link aperture has one first link aperture diameter and one first link aperture internal surface.First chain link also comprises the lateral load load bearing element, comprises a pair of projection at this each part.Thereby each projection is laterally stretched out the width that increases by the first link aperture internal surface at each first link aperture place from the first chain link body, and comprises a projection external diameter and a projection outer surface.

Different mode of execution of the present invention has the different chain belts of chain link.In some embodiments, each is sold with an outer links, at least one first chain link, at least one second chain link, at least one first chain link, and the order of an outer links is passed chain link.In one embodiment, at least one first chain link of each in described order comprises two first chain links.In one embodiment, comprise two second chain links at least one second chain link described in the described order.In one embodiment, each of first chain link of at least one in described order comprises that all two first chain links and described at least one second chain link in described order comprise two second chain links.In other mode of execution of the present invention, described order also is included in one the 3rd chain link between two second chain links, said the 3rd chain link first row in and be non-return chain link.

In other mode of execution, described part internal surface is discontinuous on each pin, thereby each pin passes two lateral load load bearing elements.In one embodiment, each pin is with an outer links, at least one first chain link, at least one second chain link, at least one first chain link, at least one outer links, at least one first chain link, at least one second chain link, at least one first chain link, and the order of an outer links is passed described chain link.In another embodiment, two lateral load load bearing elements are separated on described pin by at least one outer links.

In other mode of execution of the present invention, two lateral load load bearing elements are separated by at least one the 3rd chain link, each the 3rd chain link is in described second row and comprise a pair of the 3rd link aperture, and each the 3rd link aperture has one the 3rd link aperture diameter and one the 3rd link aperture internal surface at this.In one of these mode of executions, the diameter of the 3rd link aperture makes the pin outer surface can move with respect to the 3rd link aperture internal surface greater than the pin diameter.In another embodiment, the 3rd link aperture diameter and pin diameter closely cooperate and make and can not relatively move between the 3rd link aperture internal surface and pin outer surface.In one embodiment, each pin is with an outer links, at least one first chain link, at least one second chain link, at least one first chain link, at least one the 3rd chain link, at least one first chain link, at least one second chain link, at least one first chain link, and the order of an outer links is passed described chain link.In another embodiment, each pin is with an outer links, at least one first chain link, at least one second chain link, at least one first chain link, at least one second chain link, at least one first chain link, at least one second chain link, at least one first chain link, and the order of an outer links is passed described chain link.In another embodiment, described at least one second chain link of each in the described order comprises two second chain links.

Description of drawings

Fig. 1 illustrates the sectional view of the sleeve type roller chain of prior art.

Fig. 2 A illustrates the top view of typical prior art silenet chain.

Fig. 2 B illustrates the side view of the prior art silenet chain among Fig. 2 A.

Fig. 3 illustrates the sectional view of one embodiment of the present invention.

Fig. 4 illustrates the sectional view of another embodiment of the invention.

Fig. 5 A illustrates the sectional view of another embodiment of the invention.

Fig. 5 B illustrates the side view of the guiding chain link among Fig. 5 A.

Fig. 5 C illustrates the side view of the band toothed chain joint among Fig. 5 A.

Fig. 6 illustrates the sectional view of another embodiment of the invention.

Fig. 7 illustrates the sectional view that the inner surface of sleeve and outer surface both is used as one embodiment of the present invention of bearing area.

Fig. 8 illustrates the side view of a chain link plate, has the sectional view that the hatching 8-8 along Fig. 7 of a pin and sleeve tube makes.

Fig. 9 A illustrates the sectional view of mode of execution of Fig. 3 of two width types.

Fig. 9 B illustrates the sectional view of a modification among Fig. 9 A.

The center that Figure 10 is illustrated in the chain chain belt does not guide the sectional view of one embodiment of the present invention of chain link.

Figure 11 illustrates the sectional view of a modification of mode of execution shown in Figure 10.

Figure 12 illustrates the sectional view of a kind of mode of execution that uses less parts making.

Figure 13 A illustrates the sectional view of the one embodiment of the present invention that do not have sleeve.

Figure 13 B illustrates the sectional view of the mode of execution of Figure 13 A that does not have guiding row inner links, and wherein projection is towards right-hand.

Figure 13 C illustrates the sectional view of the mode of execution of Figure 13 A that does not have guiding row inner links, and wherein projection is towards left.

Figure 14 illustrates the sectional view of mode of execution of Figure 13 of two width types.

Embodiment

The present invention is with the characteristic of a kind of unique mode in conjunction with the roller chain and the silenet chain of prior art, and described unique mode is the NVH feature of the wear-resistant property of roller chain and silenet chain is combined into the integral body of an invention.The integral body of combination of the present invention provides the total carrying that increases between the hinging par of chain zone, thereby provides good wear-resistant property for roller chain.In all of the embodiments of the present invention, the outer surface of a lateral load load bearing element and internal surface are used to increase the load carrying zone of given chain width.In the first cover mode of execution, the load carrying part comprises sleeve.In the second cover mode of execution, the load carrying part is included in the projection on the non-guiding row inner links.

The one embodiment of the present invention that disclose basic concept are shown among Fig. 3.In this mode of execution, on non-guiding row, be provided with two pairs of inner links 32.On guiding row, also be provided with two inner links 34.In addition, be provided with pair of outside guiding chain link 22.Guiding row inner links 34 is positioned at the center of ring chain, and described ring chain has a center line 100 of separating two chain links 34.Described center line 100 is also separated guiding chain link 22 and non-guiding row inner links 32.

In Fig. 3, on the sprocket wheel (not shown), guide described chain by pair of outside guiding chain link 22.Comprise and guide each chain link of chain link 22 to have pair of holes or annular opening in each end.A surface is arranged in each hole.And each pore volume is received one such as pin 30, and perhaps the connector element of sleeve 28 and so on is used for various chain links are connected to ring chain.Each non-guiding row inner links 32 has pair of holes or annular opening in each end.In each hole of these chain links 32, there is the surface that is force-fitted on the sleeve 28, thereby can not relatively move betwixt.Each guiding row inner links 34 all has pair of holes or annular opening in each end.The surface 33 of the support region of a conduct on sleeve 28 is all arranged in each hole of these chain links 34, wherein relatively move betwixt.

Fig. 3 illustrates some notion of the present invention, and wherein one group of lateral load load bearing element 28 is inserted in some chain links and sells between 30.In Fig. 3, described lateral load load bearing element is a sleeve 28.Especially, non-guiding row 32 and guiding row inner links 34 have the sleeve 28 that is inserted between its hole and the pin 30.Each sleeve 28 comprises an outer surface 26 and an inner surface 40.Outer surface 26 is limited by the point on one group of O.D. (external diameter) that is distributed in sleeve 28.Inner surface 40 is limited by the point on one group of I.D. (internal diameter) that is distributed in sleeve 28.In this mode of execution, be provided with two chain links 34 across described chain.In each hole of these chain links 34, inner surface is restricted to the bearing area 33 that an outer surface with its sleeve 28 comes in contact.This contact does not rigidly fix, and allows can produce relative movement between two contact surfaces.Be provided with other four chain links 32 across chain in non-guiding row, these four chain links 32 across chain are inserted between guiding row's chain link 34 and the guided outside chain link 22.Guiding row 34 and non-guiding row chain link 32 are contrary tooth types.Yet each hole of non-guiding row chain link 32 all is rigidly fixed on the outer surface 26 of the sleeve 28 that comes in contact with it.

As can be seen, the invention provides and have the chain link 34 that its inner surface is engaged in the hole on the outer surface 26 of sleeve 28, thereby provide additional bearing area with carrying chain assemblies as a whole.Total carrying of the present invention zone be the bearing area of 30 pairs of sleeves 28 of pin and 28 pairs of chain links 34 of sleeve the bearing area with, the bearing area of 30 pairs of sleeves 28 of described pin is to be provided for the zone that contacts between an outer surface of internal surface 40 of sleeve 28 and pin 30, and the bearing area of 28 pairs of chain links 34 of described sleeve is the contact areas that are provided between an internal surface of the described annular opening of an outer surface 26 of a sleeve 28 and a chain link 34.By allowing the partial tension load in the chain to carry by 30 pairs of sleeve 28 interfaces of pin, and allow of external diameter (O.D.) the interface carrying of the remainder of described tension load by 34 pairs of sleeves 28 of chain link, compare with the roller chain of routine reduced sell 30 and sleeve 28 between clean Unit load, thereby make the wearing and tearing of the relevant portion that reduced resulting ring chain.Transmission of torque contact between chain and the sprocket wheel saves 32 and 34 by inverted tooth chain, thereby the NVH performance of silenet chain is provided.

Second mode of execution is shown among Fig. 4.Similar to Fig. 3, be provided with a ring chain with

chain link

22,32 and 34.Also be provided with sleeve 28 and pin 30.In this mode of execution, in non-guiding row, only use two chain links 32.Each non-guiding row chain link 32 is inserted in a guided outside chain link 22 and a guiding is arranged between the chain link 34.Described chain link is to substantially with respect to center line 100 symmetries of chain.

Referring to Fig. 5 A to Fig. 5 C, the 3rd mode of execution of the present invention shown in the figure.In this mode of execution, ring chain is guided on the sprocket wheel (not shown) by a center link 20 on guiding row similarly, and described center link 20 is engaged in the groove (not shown equally) of sprocket wheel.As shown in Fig. 5 B, described center link 20 is non-return.All the other chain links of this mode of execution are against the tooth type.Inner links 24 among Fig. 5 A and Fig. 5 C is identical with non-guiding chain link shown in other mode of execution 32 on function, but wide than in the most cases.Inner links 24 is rigidly fixed on the sleeve 28.For example, chain link 24 can be force-fitted on the sleeve 28.Therefore between the inner surface of the external diameter of sleeve 28 and chain link 24, do not relatively move.It is fully known in the field using a center guiding chain link in silenet chain, yet proposition of the present invention center guides chain link 20 to be engaged on the outer surface 26 of sleeve 28, thereby additional bearing area bearing load is provided.The total carrying zone of this design be the bearing area of 30 pairs of sleeves 28 of pin and 28 pairs of chain links 20 of sleeve the bearing area with, the bearing area of 30 pairs of sleeves 28 of described pin is to be provided for the zone that contacts between an outer surface of internal surface 40 of sleeve 28 and pin 30, and the bearing area of 28 pairs of chain links 20 of described sleeve is the contact areas that are provided between the internal surface in the outer surface of sleeve 28 and center link guide 20 holes.By at 30 pairs of sleeves 28 of pin bearing part tension load at the interface, and the external diameter (O.D.) at 20 pairs of sleeves 28 of center guiding chain link carries remaining tension load at the interface, pin 30 that chain has been reduced and clean Unit load between the sleeve 28, thus the wearing and tearing of the relevant portion that reduced chain made.The contact of transmission of torque between chain and the sprocket wheel is by

chain link

22 and 24, and described

chain link

22 and 24 is contrary tooth types, thereby the NVH performance of silenet chain is provided.

Fig. 6 illustrates the 4th mode of execution.This mode of execution comprises that has the wideer chain of multichain joint part.In first row, a single center guiding chain link 20 is set along center line 100.Two pairs of parallel inner links 32 are set in addition improve intensity.In this example, described center guiding chain link 20, and inner links 32 does not move with respect to sleeve 28 external diameters.Be provided with a bearing area 33, wherein guiding row chain link 34 has an inboard aperture surface hinged with respect to sleeve 28 external diameters.The hole of these chain links 34 is pressed on the external diameter of sleeve 28.Similarly, pin 30 bearing areas completely that have in the internal diameter (I.D.) at sleeve 28.As previously described in the mode of execution like that, by the external diameter that utilizes sleeve 28 be provided with additional support region between a kind of articulated element be used to form with the row of guiding in the contacting of one or more chain link

34.Chain link

22,32 and 34 is contrary tooth types, and and sprocket engagement, thereby the NVH performance of silenet chain is provided.

Notice that in any above-mentioned mode of execution the additional chain link that the external diameter of pressured sleeve is set is compared with roller chain and reduced load by pin 30 carryings.Reduction by the load of pin 30 carrying reduced sell 30 with sleeve 28 between wearing and tearing, take turns by utilizing contrary tooth type chain link contact chain, obtain a kind ofly having the design that better wear resistance provides the NVH performance of silenet chain simultaneously than roller chain.

In operation, if the load between chain link share and exist any imbalance, parts just to trend towards break-in and improve load and share.For example,, sell 30 initially wearing and tearing more quickly so, cause that center link or other chain link 34 or 20 in same row carries the load that increases, up to reaching a kind of natural balance if outer links 22 carryings surpass the load of ideal load.This " break-in " helps to reduce tolerance of size to the chain Effect on Performance to the trend naturally of state of equilibrium.

There is diversified mode of execution in the present invention.Embodiments of the present invention shown in Fig. 7 and Fig. 8 are used inner surface 40 and outer surface 26 the two bearing load of sleeve 28, for wear resistance provides big bearing area, allow for NVH simultaneously and use silenet chain chain link 32 and 34.This chain provides bearing area how as roller chain at least.Load is delivered to the inner surface 40 and the outer surface 26 of sleeve 28, thus scatteredload.And the invention enables to have the bearing area that has increased in relatively limited chain width.More than be shown among Fig. 7 and Fig. 8, Fig. 7 illustrates a section an of chain of the chain link that uses Fig. 8, and Fig. 8 is the side cross-sectional, view of the amplification of a chain that embodies one embodiment of the present invention.

Referring to Fig. 8, this figure is the partial side view of amplification of embodying a chain of one embodiment of the present invention, and ring chain shown in the figure forms part such as a chain link of guiding row chain link 34.Chain link 34 has pair of holes 38.Each hole 38 have one with sleeve 28 in bearing area 33 that its outer surface 26 comes in contact.Pin 30 comes in contact with the inner surface 40 of sleeve 26.As can be seen, in order to share the load of ring chain, load-bearing surface 33 has increased total carrying zone.

More specifically, referring to the section shown in Fig. 8, the inner surface of the pressured sleeve of outer surface of pin and hinged with them.The outer surface of the pressured sleeve of inner surface in the hole in guiding row inner links 34, and hinged with them.In same plane, use inner surface and the two bearing load of outer surface of sleeve to enable to increase the bearing area for given chain width.

In any of these mode of execution, the thickness of various chain links and quantity can be regulated to optimize the intensity and the wear resistance of chain.Diameter, sleeve diameter and the sleeve outer diameter of pin also can be optimized so that the best of breed of intensity and wear resistance to be provided.Always carry the zone by the maximization between the articulated element that chain is provided, can optimize wear resistance.

The present invention is a kind of improvement to roller chain, and described improvement is the new load-bearing surface between the chain link of its outside by a sleeve is provided and one or more bearing load, and reduces wearing and tearing by making it possible to reduce the load of selling.In addition, in a traditional roller chain, all tension loads are all necessary through pin, and the intensity limit of pin can limit the load bearing capacity of chain.Chain of the present invention provides the intensity that has improved by reducing the pin flexural stress and through the external diameter of sleeve the tension force of a part being delivered on the chain link of bearing load.The present invention also has some chain links reduction noises that save profile with a kind of inverted tooth chain of silencing type sprocket profiles engagement by providing, thereby roller chain has been made further improvement.

Can notice the present invention also conceived can with two engagement type silent chains of sprocket wheel or the engagement of toothed running roller, described toothed running roller is installed on the corresponding driven shaft in the inboard that is positioned at chain and the outside.For example, a kind of pair of engagement type silent chain is as drawing the bent axle of pulling is gone up timing chain from conveying rotary motion to the axle that draws the camshaft of pulling or an auxiliary device such as oil pump from one.As can be seen, when the driven shaft in the inboard that is positioned at chain and the outside rotates in opposite direction, adopt a kind of pair of engagement type silent chain.

Fig. 9 to Figure 14 illustrates other mode of execution of the present invention, and these mode of executions are wideer, stronger chains and can compare with the duplex chain bar.These modification are suitable for the have relatively high expectations situation of intensity of chain.Any of these chain chain belt can be applicable to a kind of specific chain design, and this depends on described designing requirement.Also may there be other modification.In modification shown in all, in order to obtain desired intensity and width, at the different amounts or the thickness of any position alternative link.

In Fig. 9 A, " guiding " chain link 22 does not engage sprocket tooth.

Inner links

32 and 34 be contrary flute profile and engage sprocket tooth.Some such inner links 32 are in the non-guiding row of chain, and other chain link 34 is in the guiding row of chain.Pin 30 extends through the width of chain, and two sleeves 28 are installed on each pin 30.This mode of execution is a double type basically, in other words the mode of execution shown in Figure 3 of two width types.Such " double " chain belt be used for requirement than can reach with a kind of " single " design will be high the intensity place.Except using thin 32 pairs of inner links rather than the thicker chain link 32 shown in Fig. 9 A, Fig. 9 B is identical with Fig. 9 A.

Figure 10 illustrates preferred embodiment a kind of, does not wherein guide chain link 22 at the center of chain chain belt.As shown in Fig. 9 A, chain has non-guiding row inner links 32.Also as shown in Fig. 9 A, chain also has guiding row inner links 34.Center link 36 in guiding row, but but be contrary tooth type.This design is with simple sprocket wheel work, because have only the outside of guiding chain link at chain.In this design, non-guiding row inner links 32 fits snugly on the external diameter of sleeve 28, and guiding row inner links 34 fits loosely on the external diameter of sleeve and be hinged with respect to sleeve 28, and center link 36 is engaged on the pin 30.Center guiding row inner links 36 can perhaps be slidingly matched to pin 30 press fits, and this depends on specific designing requirement.Can use

inner links

32,34 and 36 more or less, this still depends on the particular design of chain assemblies and performance requirement.

Figure 11 illustrates chain belt similar to FIG. 10, and inner links 36 and non-guiding row inner links 32 are still less arranged in the center guiding that has still less.

Figure 12 illustrates a kind of chain belt, stretches out cantilever at this sleeve 28 to the center 100 of chain belt.This design only need to be three kinds of different link type to the advantage of Fig. 9 A mode of execution extremely shown in Figure 11: guiding chain link 22, non-guiding row inner links 32, and inner links 34 is arranged in guiding.All guiding row inner links 34 are engaged on the external diameter of sleeve 28, and this provides additional bearing area for wear resistance.This modification provides maximum bearing area to given chain width.Similarly the quantity of chain link changes along with the requirement of various particular design.

In last cover mode of execution of the present invention, the lateral load load bearing element comprises the projection that is attached on the non-guiding row inner links.These mode of executions do not have the independently sleeve of part of conduct.

Figure 13 A has cancelled the independently sleeve 28 of parts of conduct, and by the function that projection 43 provides sleeve 28 is set on inner links 42.Chain link projection 43 is more prone to see in Figure 13 B and Figure 13 C.This is the improvement to Saitou (U. S. Patent 6,540,911), because the internal diameter of projection 43 and external diameter all are used as the bearing area.Except projection 43 provides the function of sleeve 28, the external diameter of sleeve 28 and internal diameter all be used as the bearing area be beneficial to and all can be applicable to this mode of execution.Each non-guiding row inner links 42 can be orientated along one of both direction shown in Figure 13 B and Figure 13 C.

Figure 14 illustrates a kind of " double " chain belt of modification shown in Figure 13 A.Center guiding chain link 22 shown in this mode of execution can also be substituted by inner links 36, and is similar to the change of being done from Fig. 9 A to Figure 10.

In sum, the invention provides a kind of wideer, the chain that intensity is bigger.In one embodiment, chain has the guiding chain link at the chain belt center.In another embodiment of the invention, chain has the inner links at the chain belt center.In one embodiment of the invention, use with respect to the asymmetrical suspended wall sleeve of chain link that is force-fitted on the sleeve outer diameter.At last, show utilize the chain link projection replace sleeve also utilize simultaneously projection internal diameter and external diameter as the bearing area with the tolerance wearing and tearing.

Therefore, be to be understood that embodiments of the present invention only are exemplarily to set forth the application of the principles of the present invention at this.To the scope that is not intended to the restriction technologies scheme of mentioning of the mode of execution details set forth, technological scheme itself proposes to think those basic features of the present invention.

Claims

1, a kind of chain comprises:

2, chain according to claim 1, wherein said lateral load load bearing element is a sleeve.

3, chain according to claim 1, described a plurality of chain links also comprise a plurality of first chain links, a plurality of second chain link, and a plurality of outer links;

Wherein each lateral load load bearing element passes at least one second link aperture;

Wherein each pin passes at least one outer links hole;

Wherein said chain link is put by arranging, and replaces between first row who comprises at least one first chain link and second row who is included at least one outer links on each edge of chain and at least one second chain link;

Wherein first chain link and lateral load load bearing element are fixed and make and can not relatively move between first chain link and lateral load load bearing element;

Wherein the diameter of second link aperture makes the part outer surface can move with respect to the second link aperture internal surface greater than the part external diameter; And

Wherein outer links bore dia and pin diameter closely cooperate and make and can not relatively move between the side chain knothole internal surface and pin outer surface outside;

Thereby described chain comprise alternately first row who is fixed to first chain link on the lateral load load bearing element rigidly and on the lateral load load bearing element transportable second chain link and be fixed to second row of the outer links on the pin, wherein first row and second arranges the direction that follows into and is hingedly connected together.

4, chain according to claim 3, described first chain link also comprises:

One first chain link body, the described first chain link body comprises a pair of first link aperture, each first link aperture has one first link aperture diameter and one first link aperture internal surface; And

The lateral load load bearing element, each part comprises a pair of projection, thus each projection is laterally stretched out the width that increases by the first link aperture internal surface at each first link aperture place from the first chain link body, and comprise a projection external diameter and a projection outer surface.

5, chain according to claim 3, wherein first chain link is contrary flute profile chain link.

6, chain according to claim 3, wherein second chain link is contrary flute profile chain link.

7, chain according to claim 3, wherein outer links is contrary flute profile chain link.

8, chain according to claim 3, wherein outer links is the guiding chain link.

9, chain according to claim 3, wherein second chain link is arranged along a center line of chain.

10, chain according to claim 9, wherein second chain link is non-return center guiding chain link.

11, chain according to claim 3, wherein each first row is non-guiding row.

12, chain according to claim 3, wherein each second row comprises a plurality of second chain links of arranging symmetrically along the center line of chain.

13, chain according to claim 3, wherein each pin passes chain link with the order of an outer links, at least one first chain link, at least one second chain link, at least one first chain link, at least one outer links, at least one first chain link, at least one second chain link, at least one first chain link and an outer links.

14, chain according to claim 13, wherein described at least one first chain link of each in described order comprises two first chain links.

15, chain according to claim 13, wherein described at least one second chain link in described order comprises two second chain links.

16, chain according to claim 15, wherein each of described at least one first chain link in described order all comprises two first chain links.

17, chain according to claim 3, wherein said part internal surface is discontinuous on each pin, thus each pin passes two lateral load load bearing elements.

18, chain according to claim 17, wherein each pin is with an outer links, at least one first chain link, at least one second chain link, at least one first chain link, at least one outer links, at least one first chain link, at least one second chain link, at least one first chain link, and the order of an outer links is passed described chain link.

19, chain according to claim 18, wherein two lateral load load bearing elements are separated on described pin by at least one outer links.

20, chain according to claim 7, wherein two lateral load load bearing elements are separated by at least one the 3rd chain link, each the 3rd chain link is in described second row and comprise a pair of the 3rd link aperture, each the 3rd link aperture has one the 3rd link aperture diameter and one the 3rd link aperture internal surface, and the diameter of the 3rd link aperture makes the pin outer surface can move with respect to the 3rd link aperture internal surface greater than the pin diameter.

21, chain according to claim 20, wherein each pin passes described chain link with the order of an outer links, at least one first chain link, at least one second chain link, at least one first chain link, at least one the 3rd chain link, at least one first chain link, at least one second chain link, at least one first chain link and an outer links.

22, chain according to claim 17, wherein two lateral load load bearing elements are separated by at least one the 3rd chain link, each the 3rd chain link is all in second row and comprise a pair of the 3rd link aperture, each the 3rd link aperture all has one the 3rd link aperture diameter and one the 3rd link aperture internal surface, and described the 3rd link aperture diameter and pin diameter closely cooperate and make and can not relatively move between the 3rd link aperture internal surface and pin outer surface.

23, chain according to claim 22, wherein each pin passes described chain link with the order of an outer links, at least one first chain link, at least one second chain link, at least one first chain link, at least one the 3rd chain link, at least one first chain link, at least one second chain link, at least one first chain link and an outer links.

24, chain according to claim 17, wherein each pin passes described chain link with the order of an outer links, at least one first chain link, at least one second chain link, at least one first chain link, at least one second chain link, at least one first chain link, at least one second chain link, at least one first chain link and an outer links.

25, chain according to claim 24, described at least one second chain link of each in the wherein said order comprises two second chain links.