CN2165284Y

CN2165284Y - Outside chain piece for chain

Info

Publication number: CN2165284Y
Application number: CN 93220146
Authority: CN
Inventors: 吴能家
Original assignee: Yuemeng Enterprise Co ltd
Current assignee: Yuemeng Enterprise Co ltd
Priority date: 1993-07-28
Filing date: 1993-07-28
Publication date: 1994-05-18
Anticipated expiration: 2003-07-28

Abstract

The utility model relates to an outer chain sheet for chains, which is characterized in that chamfer angles inwards inclined annularly along a fully circumferential edge are formed on the outer circumferential edge of the inner side surface of a sheet body. The chamfer angles are corresponding to the two end part positions of the sheet body. A frictional contact area between the inner side of the sheet body and an inner chain sheet can be reduced to gain the flexibility when a chain runs, and the eye tightening probability and the eye death probability of the chain are lowered after the chain is assembled. The chamfer angles are corresponding to the waist position of the sheet body, and the distances of the chamfer angles corresponding to the inner side of the outer chain sheet can be enlarged, so that the speed of the assembled chain is changed.

Description

Outside chain piece for chain

The utility model relates to a kind of outer chain sheet that is assembled on the chain, be meant especially a kind of can be when improving the flexibility of assembling chain operation, more reduce the surface friction drag between lamellar body and inner chain sheet, the outer chain sheet on the chain of the smoothness when assembling chain operation and speed change to improve.

Outer chain sheet is a kind of outermost member of chain that is assembled in, and quality of its structure design can directly have influence on the flexibility of assembling chain operation, and the smooth degree during speed change, and the utility model is promptly improved at this member of chain.

At first, seeing also Fig. 1, is a kind of outer chain sheet stereogram of chain in the past, in the past outer chain sheet 1 mainly be on lamellar body two arc end part 11, form respectively always to perforation 12, have the waist 13 that a top and bottom ends all is the curved arc shape in two 12 of perforation; When outer chain sheet 1 is assembled on the chain 2 in the past, be as shown in Figure 2, at first in the perforation 211 of two inner chain sheets, 21 correspondences, assemble a lining 22, assemble a chain again in lining 22 external diameters and roll 23, then plug a chain rivet 24 in its center through hole 221, the perforation 12 that 24 liang of projection ends of above-mentioned chain rivet are passed outer chain sheet 1 more respectively, and form the riveted joint shape, so that aforementioned components is made up.

When two members after pivot joint often relatively during turn, its corresponding to each other area of contact is big more, the surface friction drag that is produced when rotation relatively is just big more; With regard to the design of chain 2, its inside and

outside chain sheet

21,1 in assembling back must be the axle center turn with chain rivet 24 often, therefore, rubbing contact area is big more to each other for it, the reduction that the flexibility of chain 2 runnings will be relative, and the assembling back produces tight order, dead purpose probability also can increase relatively, tight order after the aforementioned assembling and dead order are when finished product dispatches from the factory, must detect, do up at quality management process, this trimming situation be many more, on making just more for have some setbacks, also phase shape increase of cost; By the design of outer chain sheet 1 in the past as can be known, the inside and outside side of its lamellar body all is planar, therefore, when it is assembled on the

chain

2,21 rubbing contact areas of lamellar body and inner chain sheet promptly are periphery in two arc end part 11 of whole outer chain sheet 1, not can not being in any more of above-mentioned rubbing contact area, the flexibility in the time of can reducing chain 2 runnings, it can increase assembling rear chain 2 and produce dead order and tight purpose probability.

Just assembling the sensitivity and the smooth degree of chain 2 speed changes again inquires into, outer chain sheet 1 inner side surface was flat design in the past, 1 inner distance 14 of its corresponding outer chain sheet is also certain, therefore, when assembling chain 2 is desired speed change, be subjected to can't effectively enlarging of inner distance 14 to each other, the probability that the increment on the sprocket wheel desires to snap in 1 of two outer chain sheet is that phase shape descends, and causes assembling the undesirable of chain 2 speed change smooth degrees and flexibility ratio; The flat design of its outer side surface can increase the friction probability between lamellar body and side sprocket wheel, and then cause the generation of speed change noise when chain 2 is oblique fastening; Obvious in the planar design of outer chain sheet 1 in the past, the flexibility of no matter just assembling chain operation, or the smooth degree of speed change all has bad influence.

The purpose of this utility model is that a kind of outer chain sheet of chain is being provided, and can reduce rubbing contact area between assembling back lamellar body and inner chain sheet, and improves assembling chain speed change smooth degree and reduce the assembling rear chain and produce dead order and tight purpose probability.

The purpose of this utility model reaches as follows:

A kind of outer chain sheet of chain, two ends of its lamellar body form perforation, are waists between two perforation; It is characterized in that: the outer periphery place of outer chain sheet inner side surface is formed with a ring along full periphery and intilted chamfering.

Advantage of the present utility model is: the set chamfering of the inner side surface outer periphery of outer chain sheet can reduce rubbing contact area between lamellar body and inner chain sheet corresponding to place, lamellar body two ends, promote the flexibility of assembling chain operation by this, and produce dead order or tight purpose probability after reducing the chain assembling; And aforementioned chamfering is corresponding to lamellar body waist position, then can increase inner distance between two corresponding outer chain sheets, and make the chain of assembling when speed change, the increment of sprocket wheel is able to the therefore formation of chamfering, and be easier to slip into gap between two outer chain sheets, make chain more perfect after assembling and during speed change.

Be elaborated below by most preferred embodiment and accompanying drawing outer chain sheet to chain of the present utility model, in the accompanying drawing:

Fig. 1 is a kind of stereogram of outer chain sheet in the past.

Fig. 2 is that a kind of outer chain sheet in the past is assembled in the schematic representation on the chain.

Fig. 3 is the side view of the utility model preferred embodiment.

Fig. 4 is the plan view of the utility model preferred embodiment.

Fig. 5 is that the 5-5 line of Fig. 3 is analysed and observe view.

Fig. 6 is that the utility model preferred embodiment is assembled in the schematic representation on the chain.

At first, see also Fig. 3～5, outer chain sheet 3 of the present utility model have be penetrated with respectively on 31, two ends 31, end of two circular arcs directly to perforation 32, two 32 of perforation have the waist 33 that a upper and lower end all is curved arc shape; Improvement of the present utility model focuses on: the outer periphery place on outer chain sheet 3 inner side surfaces 34 is formed with along " full periphery " intilted chamfering 35.

Please cooperate Fig. 3,6, when outer chain sheet 3 of the present utility model is assembled on the chain 4, two corresponding outer chain sheets 3 are riveted on the chain rivet 41 2 outstanding ends equally, after the assembling, because the sheet position simultaneously is equipped with the chamfering 35 of a correspondence in the inboard, therefore, " full periphery " inner distance 36 of the two therefore a chamfering 35 formation and enlarge, above-mentioned chamfering 35 is corresponding to the position of lamellar body waist 33, when speed change because can be corresponding with the sprocket wheel increment, therefore, this design can effectively increase the sprocket increment and slip in the probability of 3 of two outer chain sheets; And aforementioned chamfering 35 is corresponding to the position of lamellar body two ends 31, then because of its skewed design, 42 of lamellar body inner side surface 34 and inner chain sheets are corresponding, the area of applying so can dwindle, the minimizing of above-mentioned correspondence, fitting area, one can directly reduce the rubbing contact area of 42 of lamellar body and inner chain sheets, its two flexibility that can improve when assembling chain 4 runnings, they are three years old, dwindling of its friction area of mat more can reduce dead order of assembling rear chain 4 generations and tight purpose probability, and assembling chain 4 is more reached perfection during fabrication.

By above explanation as can be known, the utility model forms the chamfering of " full periphery " in outer chain sheet inner side surface outer periphery, above-mentioned chamfering is corresponding to lamellar body waist place, can enlarge two inner distance that are provided with relatively between outer chain sheet, make chain when speed change, the increment of sprocket wheel is easier to slip into the gap that is provided with relatively between outer chain sheet in two; And the formation of aforementioned full periphery chamfering, also be located at lamellar body two arc end part inner side surfaces because of its ring, and effectively reduce rubbing contact area between lamellar body and inner chain sheet, the minimizing of above-mentioned rubbing contact area, the flexibility when assembling chain operation except promoting, also can reduce the assembling rear chain and produce dead order, tight purpose probability, to reduce the time of its maintenance.

Claims

1, a kind of outer chain sheet of chain, two ends of its lamellar body form perforation, are waists between two perforation; It is characterized in that: the outer periphery place of outer chain sheet inner side surface is formed with a ring along full periphery and intilted chamfering.