CN2171036Y - Outer chain link - Google Patents

Abstract

The utility model relates to an outer chain sheet of a chain. An inner chamfer angle and an outer chamfer angle which are corresponding and are in full circumference design are formed on the outer circumference of the inner side surface and the outer side surface of an outer chain sheet. The frictional contact area of the inner side of a sheet body and an inner chain sheet can be reduced due to the inclined design in the position where the inner chamfer angle is corresponding to the two end parts of the sheet body in order to gain the flexibility when chains run and to lower the eye tightening probability and the eye death probability of the chains after the chains are combined. The inner side distance of two corresponding sheet bodies can be amplified in the position where the inner chamfer angle is corresponding to the waist of the sheet body, which is convenient for the changed speed of the chains after the chains are assembled. The forming of the outer chamfer angle of the full circumference can lower the friction chance and the noise between an assembled chain and a side chain wheel.

Description

Outer chain link

The utility model relates to a kind of outer chain sheet that is assembled on the chain, particularly relate to a kind of can be when improving the flexibility of assembling chain operation, more reduce the friction probability between lamellar body and side sprocket wheel, the outer chain sheet of the chain of 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 at this member of chain and is improved.

At first, seeing also Fig. 1, is a kind of outer chain sheet stereogram of chain in the past, outer chain sheet 1 in the past mainly be on lamellar body two arc end part 11, form respectively always to perforation 12, between two perforation 12, have the waist 13 that a top, bottom all are the curved arc shape; When the outer chain sheet 1 when in the past is assembled on the chain 2, then 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 at the external diameter of lining 22 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 riveted joint shape structure is with aforementioned components combination forming in addition.

When two members after pivot joint often relatively during turn, its area corresponding to each other, 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, then easily produce and sting phenomenon tight, that kill, promptly be called the reduction that the flexibility of tight order, dead order phenomenon, chain 2 runnings will be relative, the combination back produces tight order, dead purpose probability also can increase relatively, tight order after the aforementioned combination and dead order are when finished product dispatches from the factory, must detect, do up again in the quality inspection process, this trimming situation is many more, just gets on making to having some setbacks the also corresponding 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, above-mentioned rubbing contact area high, the flexibility in the time of can reducing chain 2 runnings, it can increase assembling rear chain 2 and produce dead orders 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, the inner distance 14 that its corresponding outer chain sheet is 1 is also certain, therefore, when assembling chain 2 is desired speed change, be subjected to the restriction that inner distance 14 to each other can't effectively enlarge, the probability that 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 the smooth degree of chain 2 speed changes and sensitivity; 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.Obviously the planar of outer chain sheet 1 design 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 to be to provide a kind of to reduce rubbing contact area between combination back lamellar body and inner chain sheet, and improves the outer chain sheet of the chain of assembling chain speed change smooth degree and reduction speed change noise.

The purpose of this utility model is realized by following technological scheme.

A kind of outer chain sheet of chain, it is assembled in the outer side of chain, is formed with the perforation that plugs, locatees for chain rivet in lamellar body two ends, is a waist between two perforation; It is characterized in that: the inside and outside side outer periphery of outer chain sheet all are formed with the chamfering of full periphery.

The utility model compared with the prior art advantage is very obvious.Owing to it is characterized in that having correspondence and being located at the chamfer bevel of full periphery in the inside and outside side of outer chain sheet outer periphery, therefore the formation of inboard chamfering, it can improve the smooth degree of assembling chain speed change, and can reduce the rubbing contact area between lamellar body and inner chain sheet, with the flexibility of enhancement assembling chain operation, and produce dead order or tight purpose probability after reducing its combination; The formation of outside chamfering then can reduce the friction probability between the lamellar body outside and sprocket wheel when the chain speed change, no matter the transmission noise in the time of can reducing speed change by this more reaches perfection the assembling chain when assembling, running or speed change.

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

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 the A-A section sectional view of Fig. 3.

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

At first, see also Fig. 3 to shown in Figure 5, outer chain sheet 3 of the present utility model have run through respectively on 31, two ends 31, end of two circular arcs always to perforation 32, then have the waist 33 that a upper and lower end all is the curved arc shape in two 32 of perforation; Improvement of the present utility model focuses on: the outer side surface 34 outer periphery places of outer chain sheet 3 are provided with the outer chamfering 35 of a full periphery, form a correspondence and be the interior chamfering 37 that full periphery designs on lamellar body inner side surface 36.

Please cooperate and consult Fig. 3, shown in Figure 6, when the outer chain sheet 3 of present embodiment is assembled on the chain 4, two corresponding outer chain sheets 3 are riveted on the outstanding end of chain rivet 41 equally, after the assembling, because the lamellar body inboard is equipped with the interior chamfering 37 of a correspondence, therefore, the full periphery inner distance 38 of the two can be therefore in one chamfering 37 formation and enlarge, chamfering 37 is corresponding to the position of lamellar body waist 33 in above-mentioned, when speed change because can be corresponding with the sprocket wheel increment, therefore, this design can make increment slip in the probability of 3 of two outer chain sheets increases; And this interior chamfering 37 is corresponding to 31 places, lamellar body two ends, then can be because of its skewed design, and it is corresponding with 42 of inner chain sheets to dwindle lamellar body inner side surface 36, the area of contact, above-mentioned corresponding, the minimizing of area of contact, one can directly reduce the rubbing contact area of 42 of lamellar body and inner chain sheets, two can improve the flexibility when assembling chain 4 runnings, but dwindling of its rubbing contact area of three mats more can be in manufacture process, reduce the dead order and tight order probability of combination rear chain, assembling chain 4 is more reached perfection during fabrication, and this is the effect that chamfering 37 designing institutes produce in the aforementioned full periphery.

And with regard to the designed outer chamfering 35 of the utility model, because its ring is located at the full periphery of the outer side surface 34 of whole lamellar body, therefore, when assembling chain 4 is oblique fastening, the formation of the outer chamfering 35 of this inclination, can increase the chance of skidding between itself and side sprocket wheel, certainly, dwindling of outer side surface 34 thickness can reduce the rubbing machine meeting between this side and side sprocket wheel, noise in the time of can reducing assembling chain 4 speed changes by this, this is the effect of the designing institute generation of the outer chamfering 35 of full periphery.

By above explanation as can be known, the utility model all forms the inside and outside chamfering of a full periphery in the inside and outside side of outer chain sheet, wherein, interior chamfering can enlarge two inner distance that are provided with relatively between inner chain sheet corresponding to lamellar body waist place after the moulding, making things convenient for the speed change of chain, and, then can reduce the area of rubbing contact between lamellar body and inner chain sheet corresponding to lamellar body two arc end part places, promote the flexibility on the chain operation by this, and minimizing combination rear chain produces dead order, tight purpose probability; And the design of the outer chamfering of the full periphery that is positioned at the lamellar body outer side surface more can reduce the friction probability between lamellar body outer side surface and sprocket wheel under the situation that outboard peripheries thickness reduces, and makes chain produce lower speed change noise.

Claims (1)

1, a kind of outer chain sheet of chain, it is assembled in the outer side of chain, is formed with the perforation that plugs, locatees for chain rivet in lamellar body two ends, is a waist between two perforation; It is characterized in that: the inside and outside side outer periphery of outer chain sheet all are formed with the chamfering of full periphery.

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