CN104455208B

CN104455208B - Chain

Info

Publication number: CN104455208B
Application number: CN201310463865.7A
Authority: CN
Inventors: 吴瑞章
Original assignee: CHAOHUI GUIMENG TRANSMISSION (SUZHOU) Co Ltd
Current assignee: CHAOHUI GUIMENG TRANSMISSION (SUZHOU) Co Ltd
Priority date: 2013-09-23
Filing date: 2013-09-23
Publication date: 2017-02-15
Anticipated expiration: 2033-09-23
Also published as: CN104455208A

Abstract

A chain can be meshed with a plurality of convex teeth and comprises a plurality of tandem connection units, wherein each tandem connection unit comprises four chain pieces and a chain shaft. Each chain piece is provided with a connecting portion, an embossed portion embossed out of the connecting portion and a bridging portion arranged between the connecting portion and the embossed portion and provided with a through hole, wherein the connecting portion is provided with an abutting-pushing face adjacent to the through hole and capable of being abutted against and pushed by the convex teeth of the chain. The chain shaft penetrates through the two mutually-reclining chain pieces. The abutting-pushing faces of two mutually-reclining connecting portions can be completely flush and the gap of the connecting portions can be decreased through the through holes of all chain pieces, and the convex teeth of a chain wheel can smoothly abut against and push the two abutting-pushing faces and further drive the chain to smoothly operate.

Description

Chain

Technical field

The invention relates to a kind of chain, particularly relate to a kind of chain coordinating a sprocket wheel swimmingly to operate.

Background technology

Some chains are designed to the form of two class components or three class components so as to construction and processing procedure are all able to simply at present Change, use reduction production cost.

, can engage with several lobes 100 of a sprocket wheel 10, it is taking a kind of chain of known two assembly types of Fig. 1 as a example Formed by several concatenation unit 1 concatenation.Each concatenation unit 1 includes：Four chain pieces 11 one group being grouped together two-by-two, And one pass through this chain piece 11 chain rivet 12.Each chain piece 11 has a junction surface 111, near adjacent chain piece 11 112, bridge part being connected between this junction surface 111 and this relief 112 of relief of individual relatively this junction surface 111 relief 113rd, one project big flange 116 from this junction surface 111 towards adjacent chain piece 11, and one from this relief 112 towards adjacent chain Piece 11 projects little flange 117.Thereby, known chain only needs two assemblies to may make up, and therefore makes simple, it is possible to decrease produce into This.

But because each chain piece 11 has more prominent big flange 116 and little flange 117, big flange 116 is to replace Lora (Roller), but but lead to the chain after being completed, its wider width.If therefore this kind of chain is applied can multistage On the bicycle of speed change, its change-speed gearing group (not shown), in order to coordinate the width of this chain, also can become wider, thus destroys The entirety of whole bicycle is streamlined, also relatively has some setbacks in speed change, and more prominent change-speed gearing group is likely to meeting quilt Personnel collide and so that personnel is caused danger.

Refering to Fig. 2, in order to improve drawbacks described above, developer designs the chain of another kind of two assembly types, this kind of chain with The difference of Fig. 1 chain is：Each chain piece 11 exempts the construction of this big flange 116 and this little flange 117 so that chain Width is reduced.

The chain piece 11 of this kind of chain, when making, is the chain piece 11 originally smooth using punching press equipment punching press, makes this relief Portion 112 relatively this junction surface 111 relief, during, each bridge part 113 can form a pushing surface towards this lobe 100 114, use the big flange 116 replacing script.But the material behavior due to chain piece 11, therefore, this pushing surface 114 can form one The fillet A of big radian is so that the pushing surface 114 of the two chain pieces 11 mutually reclining cannot be concordant, and forms a gap 115.

Therefore, when a sprocket wheel 10 drives this chain to operate towards the direction of arrow as shown in Figure 2, the several of this sprocket wheel 10 dash forward Tooth 100 can push corresponding two pushing surface 114, use and apply pressure to this chain.But during pushing, lobe 100 The tip of tapered thickness often snaps in this gap 115, lead to this kind of design running have some setbacks and harder, need into One step improvement.

Content of the invention

Therefore, the purpose of the present invention, that is, providing a kind of chain coordinating a sprocket wheel swimmingly to operate.

Then chain of the present invention, can be engaged with several lobes of a sprocket wheel.This chain comprises several being serially connected Concatenation unit, each concatenation unit includes：Four chain pieces, and a chain rivet.This chain piece one group is grouped together two-by-two, Each chain piece has a junction surface, relatively this junction surface relief and has a relief bored a hole outward, and one It is connected between this junction surface and this relief and has the bridge part of a through hole, this junction surface has a contrary inner surface And an outer surface, one it is connected between this inner surface and this outer surface and adjoins this through hole and can be pushed by the lobe of this sprocket wheel Pushing surface, and an interior perforation running through this inner surface and this outer surface.This chain rivet pass through axially in corresponding two perforation with Bore a hole outward for two.

Then present invention another kind chain, can be engaged with several lobes of a sprocket wheel.This chain comprises several being serially connected in Concatenation unit together, each concatenation unit includes：Two inner chain sheets, two outer chain sheets, and a chain rivet.This inner chain sheet Inside and outside setting each other, each inner chain sheet have the interior junction surface of two time intervals, one be located at this interior junction surface between and Compared with the interior relief of this interior junction surface relief, and two interior bridge parts connecting this interior relief and this interior junction surface respectively, In each, junction surface has a contrary inner surface and an outer surface, and one runs through in this inner surface and this outer surface and wears Hole.In at least one of each inner chain sheet, bridge part has a through hole.Junction surface at least one of each inner chain sheet Also have one to be connected between this inner surface and this outer surface and adjoin this through hole and can be by pushing that the lobe of this sprocket wheel pushes Face.This outer chain sheet internal and external partition each other, each outer chain sheet has the outer perforation of two time intervals.This chain rivet is placed through same This interior perforation of side and this outer perforation positioned at the same side.

The still another chain of the present invention, also comprises the outer joining piece that a consubstantiality is connected to this outer chain sheet apical margin.

Chain as above, the pushing surface at the junction surface of chain piece is in circular arc around a center of circle, and this pushes Face can be with this interior perforation concentric.

Chain as above, this interior perforation has a center of circle, this through hole have two upper near this chain piece respectively Lateral margin and the end points of lower lip, this end points forms the angle that between 30 degree～90 degree respectively and the line in this center of circle between.

Effect of the present invention is：Using each chain piece and the through hole of each inner chain sheet design so that mutually reclining The pushing surface at two junction surfaces and the interior pushing surface at two interior junction surfaces concordantly can reduce its gap, therefore when sprocket wheel When lobe pushes this two pushing surfaces or this two interior pushing surfaces, lobe will not snap in gap, and then can drive chain swimmingly Operating.

Brief description

Fig. 1 is a kind of partial sectional view of known chain；

Fig. 2 is a partial top view, and the construction in development process of the present invention is described；

Fig. 3 is the sectional perspective exploded view of one first preferred embodiment of chain of the present invention；

Fig. 4 is a schematic side view, shows a chain piece of this first preferred embodiment；

Fig. 5 is the partial top view of this first preferred embodiment；

Fig. 6 is a schematic top plan view, shows one of chain piece of this first preferred embodiment；

Fig. 7 is the sectional perspective exploded view of one second preferred embodiment of chain of the present invention；

Fig. 8 is the partial top view of this second preferred embodiment；

Fig. 9 is a schematic side view, shows an inner chain sheet of this second preferred embodiment；

Figure 10 is the partial top view of one the 3rd preferred embodiment of chain of the present invention；

Figure 11 is the partial top view of one the 4th preferred embodiment of chain of the present invention；And

Figure 12 is the sectional perspective constitutional diagram of one the 5th preferred embodiment of chain of the present invention.

Specific embodiment

Before the present invention is described in detail it shall be noted that in the following description content, similar assembly is with identical Numbering representing.

Refering to Fig. 3～6, one first preferred embodiment of chain of the present invention can be engaged with several lobes 91 of a sprocket wheel 9, This first preferred embodiment comprises several concatenation unit 2 being serially connected, and each concatenation unit 2 includes：Four chain pieces 3, And a chain rivet 4.

This chain piece 3 of the present embodiment one group is grouped together two-by-two.Each chain piece 3 have one with this adjacent chain The relief 32 with this junction surface 31 time interval for 31, one, the junction surface that piece 3 reclines, and one be connected to this junction surface 31 Bridge part 33 and this relief 32 between.This bridge part 33 has the through hole 332 running through inside and outside, and this through hole 332 has Two respectively near the upper lateral margin of this chain piece 3 and the end points 333 of lower lip.This junction surface 31 has a contrary inner surface 311 and one outer surface 312, be connected between this inner surface 311 and this outer surface 312 and adjoin the pushing surface of this through hole 332 313, and an interior perforation 314 running through this inner surface 311 and this outer surface 312, this pushing surface 313 can be pushed by lobe 91 And drive chain to move.This relief 32 relatively this junction surface 31 relief, and there is the outer perforation 321 running through inside and outside.

In the present embodiment, this pushing surface 313 is in circular arc around a center of circle 8, but is not limited when implementing, example As being linear.Additionally, this interior perforation 314 and this pushing surface 313 concentric.In addition, defining this end of this through hole 332 Point 333 is respectively two straight line L1 with the line in this center of circle 8, forms an angle theta between this straight line L1, and the angle of this angle theta Preferably scope is 30 degree～90 degree.The present embodiment is then 70 degree.This chain rivet 4 of the present embodiment passes through in corresponding two of axial direction Perforation 314 and two perforation 321 outward.

After the present embodiment combination, the corresponding chain piece 3 of another two can be stretched in the junction surface 31 of two corresponding chain pieces 3 Between relief 32, the lobe 91 that therefore this two relief 32 can form this sprocket wheel 9 of confession with this two junction surfaces 31 is stretched The space 34 entering.Further, since this bridge part 33 can first drill through this through hole 332, therefore after chain piece 3 is stamped into stepped, This pushing surface 313 can't be pullled and be formed arc fillet, thus can maintain flat, so working as two pushing surfaces 313 simultaneously When being connected together, its gap is reduced many.Finally, this end points 333 is coordinated to run through this bridge with extending up and down using this through hole 332 The design of socket part 33, therefore, when this sprocket wheel 9 drive this chain towards the direction of arrow as shown in Figure 5 mobile when, this sprocket wheel 9 prominent Tooth 91 will not snap in gap and can swimmingly push this two straight pushing surfaces 313, and then drives chain swimmingly to move.Suitable Band one is mentioned that, as shown in the above description, the design of this pushing surface 313, it is used to be pushed against by lobe 91 in replacement conventional chains Lora (roller).

In sum, the present invention utilizes the design of through hole 332, and the lobe 91 of sprocket wheel 9 on the one hand can be allowed to push at any two On straight pushing surface 313, make chain operation more smooth.On the other hand also can mitigate the weight of chain, reach light-weighted work( Effect.

Refering to Fig. 7～9, each concatenation unit 2 of one second preferred embodiment of chain of the present invention includes：Two interior chains 5, two outer chain sheets 6 of piece, and this chain rivet 4.

The inside and outside setting each other of this inner chain sheet 5, and each inner chain sheet 5 have two time intervals interior junction surface 51, One interior relief 52 being located between this interior junction surface 51, and two connect this interior relief 52 and this interior junction surface respectively 51 interior bridge part 53.This interior relief 52 is compared with this interior junction surface 51 relief.In each, bridge part 53 has a through hole 532, and the design of this through hole 532 is identical with the first preferred embodiment.Each interior junction surface 51 has a contrary inner surface 511 are connected between this inner surface 511 and this outer surface 512 with an outer surface 512, one and adjacent this corresponding through hole 532 Interior pushing surface 513, an and interior perforation 514 running through this inner surface 511 and this outer surface 512.This interior pushing surface 513 around This center of circle 8 and be in circular arc, and this interior pushing surface 513 equally can be pushed and drive chain operation by lobe 91.In addition, this interior is worn Hole 514 and this interior pushing surface 513 concentric.

This outer chain sheet 6 internal and external partition each other, each outer chain sheet 6 has two time intervals and inside and outside runs through outer perforation 611.This chain rivet 4 is then placed through this interior perforation 514 and this outer perforation 611 positioned at the same side of the same side.

Supplementary notes, this interior bridge part 53 of each inner chain sheet 5 of the present embodiment is without drilling through this through hole 532, the interior bridge part 53 that also only can be located at the same side in this inner chain sheet 5 drills through this interior junction surface 51 shape so that corresponding Become this interior pushing surface 513.Certainly, the main conduct direction of this inner chain sheet 5 chain to be coordinated and drill through through hole 532.

When the present embodiment uses, and when this sprocket wheel 9 drives this chain to move towards the direction of arrow as shown in Figure 8, this chain The lobe 91 of wheel 9 equally can swimmingly push this interior pushing surface 513, and reaches and this first preferred embodiment identical effect. Certainly, through the design of this through hole 532, the present embodiment is made equally can to reach light-weighted effect.

Refering to Figure 10, one the 3rd preferred embodiment of chain of the present invention is roughly the same with this second preferred embodiment, different Place be：The structure of each outer chain sheet 6 of the present embodiment is identical with the structure of each inner chain sheet 5.In this reality Apply in example, each outer chain sheet 6 has two time intervals and is respectively provided with 61, position of outer engaging portions of an outer perforation 611 Outer connecting portion 62 between this outer engaging portions 61, and the two outer bridges connecting this outer engaging portions 61 and this outer connecting portion 62 respectively Socket part 63.This outer connecting portion 62 relatively this outer engaging portions 61 relief.Additionally, each outer bridge part 63 to have one not shown outer logical Hole, and the shape of this accessibke porosity is same as the shape of the through hole 532 of each inner chain sheet 5.That is, when the present embodiment produces only Need to produce a kind of chain piece, also can reach the effect simplifying production routine further.

Refering to Figure 11, one the 4th preferred embodiment of chain of the present invention is roughly the same with this second preferred embodiment, different Place be：The structure design of each outer chain sheet 6.

The outer engaging portions 61, one that each outer chain sheet 6 of the present embodiment has two time intervals are located at this outer engagement Outer connecting portion 62 between portion 61, and the two outer bridge parts 63 connecting this outer engaging portions 61 and this outer connecting portion 62 respectively.Should Outer connecting portion 62 relatively this outer engaging portions 61 relief.

When the sprocket wheel 9 of the present embodiment drives this chain to move towards the direction of arrow as shown in figure 11, the lobe of this sprocket wheel 9 91 equally can swimmingly push this interior pushing surface 513, and the outer connecting portion 62 by relief, can increase lobe 91 and stretch into chain Space, and then increase speed change smooth degree.

Refering to Figure 12, one the 5th preferred embodiment of chain of the present invention is roughly the same with this second preferred embodiment, different Place be：The present embodiment also comprise an outer joining piece 7 being connected to this outer chain sheet 6 apical margin that is to say, that this enforcement should Outer chain sheet 6 and this outer joining piece 7 are with body formed, so have functions that protection and can strengthen its structural strength.Need spy Do not mentionlet alone bright, outer chain sheet 6 and the outer joining piece 7 of the chain strip adoption consubstantiality molding of the present embodiment, in the volume production work of general chain In sequence, be not suitable for assembling the assembly containing Lora (roller), but the present invention avoided the need for Lora (roller) originally, this is The clever thought of the present embodiment.

Only as described above, only presently preferred embodiments of the present invention, when can not with this limit the present invention enforcement model Enclose, the simple equivalence changes generally made according to scope of the present invention patent and patent specification content and modification, all still Remain within the scope of the patent.

Claims

1. a kind of chain, can be engaged with several lobes of a sprocket wheel, this chain comprises several concatenation unit being serially connected, It is characterized in that each concatenation unit includes：

Four chain pieces, one group are grouped together two-by-two, and each chain piece has a junction surface, relatively this junction surface relief And have a relief bored a hole outward, and one is connected between this junction surface and this relief and has a through hole Bridge part, this junction surface has a contrary inner surface and an outer surface, one is connected between this inner surface and this outer surface simultaneously Adjoin this through hole and the pushing surface that can be pushed by the lobe of this sprocket wheel, and one runs through in this inner surface and this outer surface and wears Hole；And

One chain rivet, is bored a hole through in axially corresponding two and is bored a hole outward with two.

2. chain according to claim 1 is it is characterised in that the pushing surface at the junction surface of each chain piece is around a center of circle And it is in circular arc.

3. chain according to claim 2 is it is characterised in that this pushing surface and this interior perforation concentric.

4. it is characterised in that this interior perforation has a center of circle, this through hole has two points to chain according to claim 1 Not near the end points of upper lateral margin and the lower lip of this chain piece, this end points forms one respectively between 30 and the line in this center of circle between The angle of～90 degree of degree.

5. chain according to claim 1 is it is characterised in that the inner surface at the junction surface of each chain piece can be with adjacent chain The inner surface at the junction surface of piece reclines.

6. a kind of chain, can be engaged with several lobes of a sprocket wheel, this chain comprises several concatenation unit being serially connected, Each concatenation unit includes：

Two inner chain sheets, inside and outside setting each other, each inner chain sheet have the interior junction surface of two time intervals, one be located at should Interior relief between interior junction surface and compared with this interior junction surface relief, and two connect this interior relief and this interior joint respectively The interior bridge part in portion, in each, junction surface has a contrary inner surface and an outer surface, and one run through this inner surface with The interior perforation of this outer surface, at least one of each inner chain sheet, bridge part has a through hole, and each inner chain sheet is extremely A few interior junction surface also has one and is connected between this inner surface and this outer surface and adjoins this through hole and can be subject to this sprocket wheel The interior pushing surface that lobe pushes；

Two outer chain sheets, internal and external partition each other, each outer chain sheet has the outer perforation of two time intervals；And

One chain rivet, is placed through this interior perforation of the same side and this outer perforation positioned at the same side.

7. chain according to claim 6 is it is characterised in that each outer chain sheet has two time intervals and has respectively There are the outer engaging portions of this outer perforation, and an outer connecting portion being connected between this outer engaging portions, outside each outer chain sheet Connecting portion relatively this outer engaging portions relief.

8. chain according to claim 7 is it is characterised in that the structure phase of the structure of each inner chain sheet and each outer chain sheet With.

9. chain according to claim 6 it is characterised in that the interior junction surface of each inner chain sheet inner surface can with adjacent The inner surface at the interior junction surface of inner chain sheet recline.

10. chain according to claim 6 is it is characterised in that the interior pushing surface at junction surface is around a circle in each The heart and be in circular arc.

11. chains according to claim 10 are it is characterised in that this interior pushing surface and this interior perforation concentric.

It is characterised in that this interior perforation has a center of circle, this through hole has two points to 12. chains according to claim 6 Not near the end points of upper lateral margin and the lower lip of this chain piece, this end points forms one respectively between 30 and the line in this center of circle between The angle of～90 degree of degree.

13. chains according to claim 6, also comprise the outer joining piece that a consubstantiality is connected to this outer chain sheet apical margin.