CN2145281Y - Chain board of chain - Google Patents

Abstract

The utility model relates to a chain plate assembled on the chain of the variable bicycle. The lumbar parts of the lower and the upper inner arcs are formed in the center. The ends of a circular arc on which the punches are respectively arranged are arranged on each side of the lumber parts. The utility model is characterized in that chamfer bevels are arranged on the upper-left corner and the lower-right corner of the lumber parts. Besides, a foot pad is fixed on the perpendicular line of the lumber part adjacent to the plate body to keep the original thickness of plate body so that the assembled chain has a favorable bunt position when shifting the speed. In addition, the chain is kept from slipping and reverting to the original track. However, the biasing of the bevel enables the plate body to easily slip into the corresponding latch when the speed is shifted so that the chain can shift the speed swimmingly without any delay.

Description

Chain board of chain

The utility model relates to a kind of carrier bar of chain, and particularly a kind of assembling chain speed change delay phenomenon that improves multi-speed bicycle is so that the chain speed change carrier bar of chain more smoothly.

Common multistage multi-speed bicycle as shown in Figure 1, it is the preceding chain wheel set 12 that is made of a plurality of coaxial fluted discs 15 in 11 assemblings of two pedals, and the back chain wheel set 14 that same assembling is made up of a plurality of fluted discs 15 on rear-wheel spindle 13, stride again in forward and backward chain wheel set 12,14 15 of one of them fluted discs and to establish chain 2, the above-mentioned chain 2 of mat is crossed on 15 of the forward and backward fluted discs of different-diameter, the number of teeth, just can reach the effect that changes the bicycle transmission speed; Therefore, when chain 2 uses on the multistage multi-speed bicycle, except the function that must have stable transmission, the also action of machine acceptance group chain device 16 or speed changer 17 in due course, and be transformed into fluted discs 15 different on the forward and backward chain wheel set 12,14 ' on, said here conversion just is meant the gear shifting operation of chain 2; The utility model is used at this kind just that the inside and outside carrier bar of chain 2 is improved on the multistage multi-speed bicycle.

Seeing also Fig. 2, is a kind of schematic perspective view of speed-changing chain in the past, its by inside and outside carrier bar 21,22, chain roll 23 and institute such as chain rivet 24 form.Form respectively on two arc end part of inner plate 21 directly to perforation 211,211 peripheries of the boring a hole system of inwardly taking out forms protruded stigma 212, to replace the lining of chain in the past; Assemble chain again in two corresponding protruded stigma 212 external diameters and roll 23, wear chain rivet 24 in its corresponding perforation 211 then; Above-mentioned chain rivet 24 projections two ends are assembled outer plate 22 more respectively; Chain 2 can form the chamfering 214 of inclination in inner plate 21 inner side surface waists 213 upper and lower lateral margin centre respectively in order to reach speed change purpose smoothly in the past, and chamfering 214 maximum inclination positions are on the central vertical line 215 of plate body; Each forms the chamfering 222 of inclination and outer plate 22 is equally also in waist 221 upper and lower both sides, and the same position of the maximum inclination face of aforementioned chamfering 222 is at central vertical line 223 places of plate body.

When chain 2 under normal operation, inside and outside in twos carrier bar 21,22 corresponding formed spaces 25 just can snap on the latch 151 of fluted disc 15, the connection of the aforementioned chain 2 of mat reaches the purpose that transmission rear-wheel spindle 13 rotates; By inside and outside carrier bar 21,22 designs of chain 2 in the past as can be known,, chamfering 214,222 enlarges the gap 25 of 21,22 of corresponding in twos inside and outside carrier bars though can making the inboard thickness of plate body dwindle, smooth and easy with convenient gear shifting operation, but with regard to actual user mode, the position of chamfering 214,222 is unsatisfactory, cause chain 2 easy delay because of speed change in speed-change process to have some setbacks, its reason roughly can be illustrated by two phenomenons that chain 2 speed-change processes are produced:

First: please cooperate Fig. 2,3, wherein Fig. 3 is the worm's eye view of chain in the past, general chain 2 is in design for the space 25 that makes 21,22 of inside and outside in twos carrier bars is snapped in the latch 151 of each same size on the fluted disc 15 stably, so 24 of chain rivets have certain distance in twos; But when chain 2 when carrying out gear shifting operation, chain 2 must be oblique fasten mode and be crossed on simultaneously two adjacent fluted discs 15,15 ' on, aforementioned oblique fastening added chain 2 and is made up of blocks of (propping up) hard metal plate body, nature is mat single chain purpose beat and change and fasten track immediately, at this moment, its manner of execution just can be as shown in Figure 3, and the pad pin is made at first mat one fixed point position, make again chain order backward as fulcrum oblique drag cause the fluted disc 15 of desiring speed change ' on; And as shown in Figure 3, chain 2 was when speed change in the past, the soprano is waist 221 central authorities of outer plate 22 as pad pin probability, but 22 of the outer plates of chain 2 respectively form chamfering 222 at plate body waist 221 upper and lower edge, the maximum inclined-plane of this chamfering 222 just in time the position in waist 221 central authorities, just with the actual (real) thickness of outer plate 22, the position that its plate body is the thinnest is the upper and lower end central authorities of waist 221; The position of though waist 221 central upper and lower ends just in time are chain 2 when speed change when being oblique fastening the easiest formation pad pin, but its thickness dwindles, certainly be unfavorable for plate body abut against desire the latch 151 of speed change ' on, and when chain 2 its pad foot position thickness deficiency during in speed change, just be easy to generate astasia and the phenomenon of skidding, cause chain 2 to fall back again on original fluted disc 15, and must make the gear shifting operation of another time again, the delay that so causes the speed change time with have some setbacks.

Second: suppose that chain 2 has had good pad foot position when speed change, then as shown in Figure 3, its outer plate 22 the easiest positions with latch 152 ' corresponding engaging are that the close chain that is pivoted rolls 23 position, just in actual speed-change process, the inclined to one side waist 221 close assembling chains at outer plate 22 of chain 2 the easiest position meetings with latch 152 ' corresponding engaging roll 23 position, but not waist 221 centres; And the position of the chamfering 222 plane of inclination maximums of outer plate 22 is waist 221 central authorities at outer plate 22, but actual easily only form minimum inclined-plane because of the position at chamfering 222 last edge on the contrary with the position of latch 152 ' corresponding, cause the benefit of actual speed change, slippage lower, therefore, when chain 2 actual speed changes, though the carrier bar that aforementioned inside and outside carrier bar 21,22 with chamfering 214,222 designs can not have chamfering produces preferable shuffle effect, but because of design attitude undesirable, still can cause the chain delay of 2 speed change times, and influence the smooth degree of its speed change, and produce noise.

Main purpose of the present utility model is in that a kind of assembling chain speed change delay phenomenon that reduces is provided, to impel chain speed change chain and chain-plate more smoothly.

The purpose of this utility model reaches as follows: a kind of carrier bar of chain, and it is to form perforation respectively in plate body two ends of carrier bar, the plate body between two perforation forms waist, forms chamfer bevel more respectively in the waist upper and lower end of carrier bar plate body inner side surface;

It is characterized in that: this two chamfering lays respectively at the upper left corner and the position, the lower right corner of waist, sets up state and form the diagonal angle, and forms the pad foot that thickness is equal to plate body thickness in the upper and lower ora terminalis of waist near plate body central authorities.

The purpose of this utility model can also following mode reach: the upper and lower ora terminalis of central vertical line two sides of described carrier bar plate body can respectively form chamfer bevel, and becomes the state of upper and lower correspondence, left and right symmetry.

The arrangement of chamfering position by this, the good pad foot position that can make the upper and lower ora terminalis of the waist central position of carrier bar form that thickness does not dwindle and can firmly stand for latch, also can allow the maximum inclined-plane of chamfering latch with the desire engaging when the chain speed change easier to be corresponding, reduce the chance that assembling chain speed change postpones with this, and help the smooth and easy of speed change.

Advantage of the present utility model is: via the improvement of aforementioned carrier bar structure, not only its space kenel is an innovation, more the suitable of position is set because of its inside and outside chamfering, and reserve the pad foot that a thickness does not dwindle, and make assembling chain smooth and easy and effect that can not postpone when speed change, the reason that produces aforementioned effect has two:

First: the pad foot position that general chain often produces when speed change is the waist central position of position at plate body, and the utility model is reserved one section pad foot that thickness does not dwindle in carrier bar central authorities vertical line two sides when design, therefore, when assembling chain in speed change, aforementioned pad foot just can provide the good position that abuts against when speed change, avoid chain to skid and return back to original track, be beneficial to the speed change of chain.

Second: via above-mentioned improvement, the position of chamfering will be to two end displacements on the carrier bar, the position that above-mentioned chamfering forms has an opportunity obviously can make plate body be easy to slip in the latch of correspondence when speed change in position corresponding, engaging between inside and outside carrier bar and speed change latch during the chain speed change just most.

In sum, practical and progressive really chain and chain-plate of the present utility model.

Enumerate some preferred embodiments now, and cooperate that graphic details are as follows, wherein appendedly graphicly be:

Fig. 1 is a kind of transmission schematic representation of existing multistage multi-speed bicycle.

Fig. 2 is a kind of assembling stereogram of existing chain.

Fig. 3 is a kind of elevational schematic view of existing chain.

Fig. 4 is the outer plate stereogram of the utility model preferred embodiment.

Fig. 5 is the inner plate stereogram of the utility model preferred embodiment.

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

Fig. 7 is that the utility model preferred embodiment is assembled in the gear shifting operation schematic representation on the chain.

Fig. 8 is the outer plate stereogram of another preferable possible embodiments of the utility model.

Fig. 9 is the inner plate stereogram of another preferable possible embodiments of the utility model.

At first see also Fig. 4, outer plate 3 of the present utility model also forms respectively on two ends directly to perforation 31, has the waist 32 that upper and lower end is the indent arcuation in two 31 of perforation; Present embodiment is characterised in that: rely on the side that chain rolls after the outer plate 3 inner side surface 30(assembling) waist 32 on, the lower end forms a skewed chamfering 33 of being located at plate body one side partially respectively, above-mentioned chamfering 33 between plate body central authorities vertical line 321 with bore a hole 311 of 31 center vertical lines, set up state and form the diagonal angle, and the difference position is in the upper left corner and the lower right corner of waist 32, so that plate body painstakingly choice direction when assembling, the offset design of aforementioned chamfering 33 more makes on plate body central authorities vertical line 321 positions, following ora terminalis respectively forms one section pad foot 34 that keeps the original thickness of plate body.

See also Fig. 5, the inner plate 4 of present embodiment also has two arc end part, wears respectively on two ends directly to perforation 41, and 41 peripheries of boring a hole are inwardly taken out and formed protruded stigma 42, to replace the lining of chain in the past, between two ends, then form the waist 43 that upper and lower end is the indent arcuation; Thereby the feature of present embodiment also is: waist 43 upper and lower ora terminalis respectively form chamfer bevel 44, above-mentioned chamfering 44 is located at plate body central authorities vertical line 431 equally partially and bores a hole 411 of 41 center vertical lines, it relies on the plate body two different perforation 41 equally respectively, and form upper left, the symmetrical state of setting up of lower-right diagonal position, the central vertical line of aforementioned waist 43 about in the of 431 ora terminalis also form one section pad foot 45 that thickness is identical with plate body respectively.

Please cooperate Fig. 6,7, when inside and outside carrier bar 4,3 was assembled into chain 5 simultaneously, formed chamfering 44,33 must rely on chain and roll 51 on its plate body, and was oppositely arranged and is combined into one by one corresponding space 46,35; When the assembling chain 5 when carrying out gear shifting operation, keep the thickness of original plate body because of two inside and outside carrier bars, 4,3 top block portions 34,45, therefore when speed change, can form splendid pad placement of foot, to make things convenient for chain 5 therefore to fill up the formation of foot 34,45, and firm being erected on the latch 61 of desiring in the Variable speed fluted disc 6 can not fall on the original conveyor track easily; And when chain 5 have one can firmly set up pad foot position the time, the chain 5 that is positioned at pad rear, foot position just easily thereby be transformed on the fluted disc 6 of desiring speed change, because set chamfering 33 is offset to waist 32 1 sides on the utility model outer plate 3, therefore position, maximum inclined-plane is corresponding with the latch 62 of desire engaging on the chamfering 33, and is beneficial to chain 5 quick speed changes; So chain 5 just can be easily because of the correct correspondence mutually of its clamped position snaps in, to reduce the phenomenon of chain 5 speed change time lags when speed change.

General multi-speed bicycle is when accepting the speed changer action, and the chain of assembling on it can produce gear shifting operation below the fluted disc of back chain wheel set, mainly is to be located at the below because of its speed changer, and therefore, as shown in Figure 7, its speed change is based on the right side carrier bar; Otherwise, when finishing on the fluted disc of speed change in preceding chain wheel set of chain 5, then based on the left side carrier bar among Fig. 7; Certainly, as previously mentioned, when chain 5 is transformed into 6 ' time of small tooth plate by large fluted disc 6, then speed change will with 4 spaces 46 of inner plate snap in latch 61 ' chance bigger, conversely, then the chance that snaps on the latch 61 with 3 spaces 35 of outer plate is bigger, but no matter the speed change state of chain 5 why, and it is smooth and easy that the above-mentioned improvement of the utility model all can avoid the chain speed change to postpone, promote speed change.

The utility model textural also can be as shown in Figure 8, central vertical line 71 2 side upper and lower end edge at outer plate 7 form corresponding chamfering 72 respectively, in then reserving one section pad foot 73 identical equally with upside or with 72 of the chamferings of downside in twos, can achieve the goal so equally with the original thickness of plate body.

And outer plate 7 structures in order to cooperate previous embodiment, inner plate 8 of the present utility model can be as shown in Figure 9, upper and lower edge face respectively forms chamfer bevel 82 in waist 81 central vertical lines, 811 both sides of inner plate 8, then form one section pad foot 83 that thickness is identical with plate body in two with upside or with 82 of the interior chamferings of downside, can reach purpose so equally.

It is circular-arc in two that aforementioned two embodiments' carrier bar waist all is, but the utility model also can use at waist and be on the carrier bar of flat, certainly, also can use the planar inner plate in no protruded stigma formation.Though the end of aforementioned again two embodiments' carrier bar chamfering does not surpass the central vertical line of plate body, in fact, the end of aforementioned chamfering is minimum, pad foot position thickness effect to its carrier bar is atomic, therefore, even if make the central vertical line of the end of chamfering, also little to its structure influence above carrier bar; In addition, also can form a little chamfering of ring at the inboard periphery of carrier bar.

Claims (2)

1, a kind of carrier bar of chain, it is to form perforation respectively in plate body two ends of carrier bar, the plate body between two perforation forms waist, forms chamfer bevel more respectively in the waist upper and lower end of carrier bar plate body inner side surface;

It is characterized in that: this two chamfering lays respectively at the upper left corner and the position, the lower right corner of waist, sets up state and form the diagonal angle, and forms the pad foot that thickness is equal to plate body thickness in the upper and lower ora terminalis of waist near plate body central authorities.

2, according to the carrier bar of the described chain of claim 1; It is characterized in that: the upper and lower ora terminalis of central vertical line two sides of described carrier bar plate body respectively forms chamfer bevel, and becomes the state of upper and lower correspondence, left and right symmetry.

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