TW201621184A - Asymmetrical chain - Google Patents

Abstract

This invention is an asymmetrical chain. The asymmetrical chain comprises of multiple link units that are sequentially connected in series. The link units are constructed via an inner link plate and an outer link plate joined together in staggered interleave configuration. In addition, a first skewed chain plate and a second skewed chain plate are relatively configured with the inner link plate and the outer link plate. The first skewed chain plate and the second skewed chain plate are connected in parallel with respect to inside and outside via a terminator. Two chain rods are respectively setup at the two ends of the inner link plate where correspond to one end of the first skewed chain plate and one end of the second skewed chain plate. An asymmetrical chain in which the lateral sides where along an axis are oblique with inconsistent curvature is formed by pivoting a chain pin in parallel connected with the outer link plate, the inner link plate, the chain rod, the second skewed chain plate, and the first skewed chain plate. The design provided by this invention constructs an asymmetrical chain in which one side is skewed while radians increase in order to allow for a variable speed transmission mechanism to vary against front/rear chain wheel. As a result, this design expands the scope of application of the asymmetrical chain.

Description

Asymmetric chain

This creation is about a chain, especially one that can be applied to the field of transmission technology such as bicycle shifting transmission mechanisms.

At present, in a shifting transmission mechanism of a bicycle, the utility model mainly comprises a sprocket set and a shifting switching device, wherein the sprocket set has a plurality of front sprocket wheels of different diameters, a plurality of rear sprocket wheels of different diameters and a ring shape. a plurality of sprocket wheels of different diameters are arranged coaxially on the pedal driving shaft of the bicycle according to the diameter, and the plurality of rear sprocket wheels of different diameters are arranged coaxially according to the diameter. The set is disposed on the rear wheel axle, and the endless chain is connected between any of the front sprocket and any of the rear sprocket, and the shifting switching device is disposed on the bicycle frame for changing the chain winding. The front sprocket and the rear sprocket are positioned to change the speed ratio, so that the bicycle has the function of multi-step shifting.

However, in the composition of the sprocket set, the chain is formed by successively connecting a plurality of chain units, each chain unit is composed of a plurality of chain plates with a chain roller and a chain pin, and the chain system is symmetrically combined, and the chain is opposite to The deflection of the two sides of the axial direction is small, which is limited by the small deviation of the lateral deflection of the chain, so that the sprocket set of the existing multi-stage shifting transmission adopts a combination of a plurality of front sprocket wheels and a plurality of rear sprocket wheels. structure. Furthermore, the existing chain is limited by the fact that the lateral deflection is less curved, and the chain has a problem of non-slip transition between the sprocket positions, which needs further improvement.

At present, the concept of a single front chain with a plurality of rear sprockets has been proposed in the variable speed transmission mechanism. However, due to the small lateral arcing of the chain, the variable transmission mechanism is required to achieve the function of multi-step shifting. The stage of conception has not yet been realized.

The main purpose of this creation is to provide an asymmetric chain, thereby solving the problem that the symmetrical chain link unit structure of the existing chain can have a small torsion skew angle, resulting in limited configuration of the front and rear sprocket in the shifting transmission mechanism, and the chain in the chain. The problem is not smooth when the position between the wheels is changed.

In order to achieve the foregoing disclosure, the asymmetric chain proposed by the present invention includes a plurality of link units, which are sequentially connected in series, and the link unit includes: an inner link plate, and opposite ends thereof The first inner plate segment and the second inner plate segment respectively form an inner chain pin hole in each of the first inner plate segment and the second inner plate segment; and an outer link plate has opposite ends respectively The outer plate segment and the second outer plate segment, each of the first outer plate segment and the second outer plate segment form an outer chain pin hole, and the first outer plate segment and the second outer plate segment of the outer chain plate can respectively The outer chain pin hole is disposed outside the second inner plate segment of the inner chain plate and the outer side of the first inner plate segment of the other inner chain plate, and the outer chain pin hole corresponds to the inner chain pin hole; a section, a second section and an engaging section, each of the first section and the second section forming a chain pin hole, the first section being offset from the second section in the inward direction section, The connecting section is obliquely connected between the first section and the second section, and the first skewing link is arranged at a distance from the inner side of the inner chain plate; a second skewing chain plate The first section and the second section respectively form a chain pin hole, and the first section is inwardly facing the second section. a segment offset, the connecting portion is obliquely connected between the first segment and the second segment, the second skewing link is spaced apart from the outer link plate, and the first segment of the second deflecting link is disposed at Inside the second section of the first skewed link, the first section of the second skewed link corresponds to the second inner section of the inner link, which provides an inner link of the other link unit a first inner plate segment of the plate is inserted into the first segment of the corresponding first skew chain plate; the two chain rollers each have a shaft hole, and one of the two chain rollers is disposed on the inner chain plate Between the first inner plate segment and the first segment of the first skew link plate, the other chain roller is disposed between the second inner plate segment of the inner link plate and the first segment of the second skew link plate And the two-chain pin is respectively connected to the outer chain pin hole of the first outer plate segment of the outer chain plate, the inner chain pin hole of the second inner plate segment of the inner chain plate, the shaft hole of the chain roller, and the second partial pin First section of the slanting plate Chain link pin hole of the second section first skew pin holes of the link plates.

By exosing the asymmetric chain, most of the asymmetric link units are constructed according to the series combination, so that they have at least the following characteristics: 1. The author uses the first skewed chain plate with segment deflection, The second skewed chain plate is disposed opposite to the substantially flat inner chain plate and the outer chain plate, and the inner chain plate and the outer chain plate are arranged in an inner and outer staggered manner, and the first skewed chain plate and the second skewed chain are arranged. The plates are constructed in a combination of inner and outer ends of one end of each other, so that the combined chain forms an asymmetrical shape, which is different from a conventional symmetric chain. 2. According to the above description, the asymmetric chain of the present invention is laterally deflected by the first skewed link plate and the second deflected link plate on one side thereof, the first skewed link plate and the second skewed plate. The combined structure of the inner and outer ends of the chain plate is connected side by side, and the other side of the chain uses the inner chain plate and the outer chain plate to have an inner and outer staggered arrangement structure, so that the skew of the artificial asymmetric chain is inconsistent with respect to the axial sides. And having one side of the first skewed link and the second skewed link can provide a greater degree of skew. 3. According to the above description, the asymmetric chain of the present invention uses a first skewed chain plate on one side and a second skewed chain plate to form a lateral deflection of the segment, and the first skewed chain plate and the second The combined structure of the inner and outer sides of the one end portion of the skew chain plate enables the side of the asymmetric chain to generate a large deflection arc, so that it can not only conform to the shifting of the plurality of front sprockets and the plurality of rear sprockets. In addition to the transmission mechanism, it can also meet the deflection transformation requirements of the variable transmission of a single front sprocket with multiple rear sprocket. The applicative chain of this creation is more applicable and has excellent remarkable effects. 4. This creation uses a series of asymmetrical chain links in sequence to make the chain inconsistent with respect to the axial sides, and has a first skewed chain and a second skewed chain. One side of the plate can increase the chain torsion deflection angle, and reduce the configuration restrictions of the front sprocket and the rear sprocket in the variable speed transmission mechanism. When applied to a single front sprocket with multiple rear sprocket shifting transmissions, It can reduce the front sprocket configuration spacing at one end of the pedal drive shaft. 5. The creation of the asymmetric chain in the variable speed transmission mechanism can improve the smoothness and flexibility of the chain between the sprocket changing positions due to the inconsistent mechanism of the skew of the chain with respect to the axial sides. Sex. When the asymmetric chain is applied to the variable speed transmission mechanism, the school bus runs after the chain is installed, and has good smoothness, and in the process of chain transmission, the asymmetric chain is difficult to be used in the forward or backward rotation motion. The chain is dropped from the front sprocket or the rear sprocket.

In addition to the foregoing features, the asymmetric chain of the present invention can further form an inclined surface on the outer side of the outer middle plate between the first outer plate segment and the second outer plate segment on the outer side surface of the outer chain plate, and the middle portion of the outer plate The thickness of the inclined surface is reduced from the inside to the outside, so that the middle portion of the outer chain plate is reduced in the range of the thick edge, thereby making the creation of the asymmetric chain into the variable speed transmission mechanism, and the utility model can utilize the position of the sprocket. The guiding action of the inclined surface of the lower side of the outer side of the outer chain plate makes the front sprocket or the rear sprocket only need three-quarters of the teeth to contact the inclined surface, so that the asymmetric chain can be smoothly guided to the front chain Change position between wheels or between rear sprockets.

As shown in FIG. 1, a partial schematic diagram of a preferred embodiment of the present asymmetric chain is disclosed. The asymmetric chain 1 includes a plurality of link units 1A, and the plurality of link units 1A are sequentially connected in series. Into a ring. As shown in FIG. 1 and FIG. 2, the composition of the link unit 1A in a preferred embodiment of the present asymmetric chain is disclosed. As can be seen from the drawings, the link unit 1A includes a The inner chain plate 10, an outer chain plate 20, a first skew link plate 30A, a second skew link plate 30B, a two-chain roller 40, and a two-chain pin 50.

As shown in FIG. 1 and FIG. 2, the inner link plate 10 is a substantially flat plate body. The inner link plate 10 defines an inner side surface and an outer side surface. The inner side surface and the outer side surface are located on the inner chain plate 10. On opposite sides, the opposite ends of the inner link plate 10 are respectively a first inner plate segment 11 having a circular arc shape and a second inner plate segment 12 having a circular arc shape, in the first inner plate segment 11 and the second inner portion An inner plate middle portion 15 is defined between the plate segments 12, and an inner chain pin hole 13 is formed in each of the first inner plate segment 11 and the second inner plate segment 12. In the preferred embodiment, the upper and lower side edges of the inner panel middle section 15 of the inner link plate 10 may form an arcuate concave edge that is concave toward the center.

As shown in FIG. 1 and FIG. 2, the outer link plate 20 is a substantially flat plate body. The outer link plate 20 defines an inner side surface and an outer side surface. The inner side surface and the outer side surface are located on the outer chain plate 20. On opposite sides, the opposite ends of the outer link plate 20 are respectively a first outer plate segment 21 having a circular arc shape and a second outer plate segment 22 having a circular arc shape, and the first outer plate segment 21 and the second outer portion An outer plate middle portion 24 is defined between the plate segments 22, and an outer chain pin hole 23 is formed in each of the first outer plate segment 21 and the second outer plate segment 22. Each outer link plate 20 is connected between the two inner link plates 10, wherein the outer link plate 20 is disposed on the outer side of the second inner plate segment 12 of the inner link plate 10 with its first outer plate segment 21, The second outer plate section 22 of the chain plate 20 is disposed on the outer side of the first inner plate segment 11 of the other inner link plate 10, and each of the outer chain pin holes 23 of the outer link plate 20 respectively corresponds to its side. The inner chain pin hole 13 of the inner link plate 10. In the preferred embodiment, the upper and lower side edges of the outer middle portion 24 of the outer link plate 20 may form an arcuate concave edge that is concave toward the center.

As shown in FIG. 1 and FIG. 2, the first skew link 30A and the second skew link 30B are substantially the same plate body, the first skew link 30A and the second skew link 30B. Each of the opposite sides defines an inner side and an outer side, and the first skew link 30A and the second skew link 30B each include a first section 31A, 31B, a second section 32A, 32B, and a connecting section 33A, 33B, the first section 31A, 31B and the second section 32A, 32B are respectively arcuate, and the first section 31A, 31B and the second section 32A, 32B are divided A chain pin hole 34A, 34B is formed in each of them. As shown, the first sections 31A, 31B are segmentally offset in the inward direction with respect to the second sections 32A, 32B, and the engaging sections 33A, 33B are obliquely coupled to each other. The first section 31A, 31B is between the second section 32A, 32B. In the preferred embodiment, the first section 31A, 31B of the first skew link 30A and the second skew link 30B are offset from the section of the second section 32A, 32B in the inward direction. The amount is close to the thickness of the plate of the first skew link 30A or the second skew link 30B.

As shown in FIG. 1 to FIG. 3, the first skew link 30A is spaced apart from the inner link plate 10 at an inner side, wherein the first segment 31A of the first skew link 30A is opposite to the second. The section 32A is offset toward the inner direction section, and the distance between the first section 31A of the first skew link 30A and the first inner panel section 11 of the inner link plate 10 is smaller than that of the first skew link 30A. The spacing between the two sections 32A and the second inner panel section 12 of the inner link plate 10. The second skew link 30B is spaced apart from the outer link plate 20, and the second skew link 30B is disposed with its first section 31B on the inner side of the second section 32A of the first skew link 30A. The first section 31B of the second skew link 30B corresponds to the first inner panel section 12 of the inner link plate 10 and the first outer panel section 21 of the outer link panel 20, and the second skewed link 30B is second. Section 32B corresponds to the second outer plate section 22 of the outer link plate 20. As shown in FIG. 1 , FIG. 3 and FIG. 4 , the distance between the second section 32B of the second skew link 30B and the second outer plate section 22 of the outer link plate 20 is used to provide another The first inner plate section 11 of the inner link plate 10 of the link unit is disposed with the first section 31A of the corresponding first skew link 30A.

As shown in FIG. 1 to FIG. 3, each of the two-chain rollers 40 has a shaft hole 41, and one of the chain rollers 40 of the two-chain roller 40 is rollably disposed in the first inner space of the opposite inner chain plates 10. The plate section 11 is between the first section 31A of the first skew link 30A. The other chain roller 40 is rollably disposed between the second inner plate section 12 of the opposite inner chain plate 10 and the first section 31B of the second skew link 30B.

As shown in FIG. 1 to FIG. 3 , each chain pin 50 is pivotally connected to the outer chain pin hole 23 of the first outer plate segment 21 of the outer link plate 20 and the inner chain of the second inner plate segment 12 of the inner link plate 10 . The pin hole 13, the shaft hole 41 of the chain roller 40, the chain pin hole 34B of the first section 31B of the second skew link 30B and the chain pin hole 34A of the second section 32A of the first skew link 30A .

As shown in FIG. 2, in the preferred embodiment, the inner side surface of the inner chain plate 10 can also be laterally convex from the inner edge of the inner inner pin segment 13 and the inner inner pin segment 13 of the second inner plate segment 12. An annular chain roller is pivoted to the flange 14. The first skew link plate 30A and the second skew link plate 30B respectively protrude laterally from the edge of the chain pin holes 34A, 34B of the first side sections 31A, 31B of the inner side thereof, and an annular chain roller pivot joint Edges 35A, 35B. The axial hole 41 of the chain roller 40 has an aperture corresponding to the outer diameter of the chain roller pivot flanges 14, 35A, 35B, and the axial length of the chain roller pivot flanges 14, 35A, 35B is less than or equal to the length of the chain roller. One-half, the chain roller pivot flange 14 of the inner chain plate 10 and the chain roller pivot flanges 35A, 35B of the first skew link 30A and the second skew link 30B can be respectively pivoted on the side In the shaft hole 41 of the adjacent roller 40, the chain roller pivotally flanges the flanges 14, 35A, 35B and passes through the chain pin 50 therethrough.

As shown in FIG. 1 and FIG. 3, by the configuration of the link unit 1A, the plurality of link units 1A can be connected to each other to form a flexible endless chain, wherein each two adjacent links When the unit 1A is connected, one of the link units 1A is disposed together with the first inner plate section of the inner link plate, the first section 31A of the first skew link 30A, and the chain roller 40 located therebetween. a space between the second section 32B of the second skew link 30B of the one link unit 1A and the second outer plate section 22 of the outer link plate 20, and is combined with the chain pin 50 therethrough, whereby The first skew link 30A and the second skew link 30B having the segment deflection are respectively disposed opposite to the substantially flat inner chain plate 10 and the outer link plate 20, and the inner link plate 10 and the outer link plate 20 are In the inner and outer staggered arrangement, the first skew link 30A and the second skew link 30B are combined in a side-by-side connection between one end and the other, so that the combined chain forms an asymmetrical state.

As shown in FIG. 5, in the link unit 1A of the present invention, the outer surface of the outer chain plate 20 may further form a slope 25 on the upper and lower sides of the middle portion 24 of the outer panel, so that the middle portion 24 of the outer panel is formed on the slope 25 The thickness is diminishing from the inside out.

As shown in FIG. 4, in the link unit 1A of the present invention, the upper and lower side edges of the engaging sections 33A, 30B of the first skew link 30A and the second skew link 30B may form an arc concave toward the center. Concave edge. In addition, as shown in FIG. 6, the engaging sections 33A, 30B may also form a central concave concave edge on one side edge (below the side edge of the figure) adjacent to the sprocket; The connecting sections 33A, 30B are formed at a side edge away from one side of the sprocket (the upper side edge of the figure) to form a straight edge flush with the circumference of the first skewing link 30A and the second skewing link 30B. It ensures that each link unit of the created asymmetric chain changes position smoothly between the sprocket of the shifting transmission mechanism and is not easy to be unchained.

In the case of using the asymmetric chain of the present invention, as shown in FIG. 7 , for example, the bicycle transmission transmission mechanism includes a sprocket set and a shift switching device (not shown). The sprocket set includes one or more front sprockets 2 of different diameters, a plurality of rear sprockets 3 of different diameters, and a creative asymmetric chain 1 , the plurality of front sprockets 2 of different diameters The plurality of sprocket wheels 3 of different diameters are sequentially arranged coaxially on the rear wheel axle 5 according to the diameter, which are arranged in a coaxial manner according to the diameter. The chain 1 is wound between any of the front sprocket 2 and any of the rear sprocket 3, and the asymmetric chain is engaged with the front sprocket 2 and the rear sprocket 3. The shifting switching device is assembled on the bicycle frame and connected to the asymmetric chain 1 to allow the bicycle rider to change the front sprocket 2 or/and the rear sprocket 3 around the asymmetric chain by using a shift switching device to change The speed ratio enables the bicycle to have a multi-speed shift function.

As shown in FIG. 7 and FIG. 8 , the present asymmetric chain uses a first skewed chain plate 30A having a segmental deflection and a second skewed chain plate 30B to bond the substantially flat inner chain plate 10 and the outer chain. The plates 20 are arranged in an opposite configuration such that the chain forms an asymmetrical configuration. Thereby, the structural structure of the asymmetric chain 1 is made to be inconsistent with respect to the left and right sides of the front and rear axial directions A of the bicycle, and the positional changes between the front sprocket 2 and the rear sprocket 3 are increased. Margin and flexibility.

In particular, in the future, the multi-stage shifting transmission mechanism is oriented toward a single front sprocket with a plurality of rear sprocket wheels of different diameters, and the chain must have a large lateral deflection to meet the needs of the existing shifting number. . As shown in FIG. 7, the artificial asymmetric chain 1 has a side of the first skew link 30A and the second skew link 30B, which is laterally deflected by the section, and the first skew link 30A and The combined structure of the inner side and the outer side of the second skew link 30B has a large skewness, so that it can conform to the future shifting transmission mechanism to the single front sprocket with a plurality of rear sprocket wheels of different diameters. The development needs have made the asymmetrical chain of this creation widely applicable and have excellent and remarkable effects.

As shown in FIG. 8, the present asymmetric chain 1 has a first skewed chain plate 30A and a second skewed chain plate 30B having a segmental deflection, respectively, and a substantially flat inner chain plate 10 and an outer chain plate. In the relative arrangement, the inner link plate 10 and the outer link plate 20 are arranged in an inner and outer staggered configuration, and the second and second skew link plates 30A are connected in parallel with the inner and outer ends of the second skew link plate 30B. The meshing space in which the teeth of the front sprocket 2 and the rear sprocket 3 are provided in each link unit 1A is a unequal width type with one side deflection, so that the asymmetric chain 1 is on the front sprocket 2 When the sprocket 3 is orbited, the teeth of the front sprocket 2 and the rear sprocket 3 are easily placed into the asymmetric chain 1, and the bicycle is not easily broken when the bicycle is in the reverse gear.

1‧‧‧Asymmetric chain
1A‧‧‧ link unit
10‧‧‧Inner chain board
11‧‧‧First inner panel
12‧‧‧Second inner plate section
13‧‧‧Inner chain pin hole
14‧‧‧Chain roller pivot flange
15‧‧‧ middle section
20‧‧‧Outer chain board
21‧‧‧First outer panel
22‧‧‧Second outer plate section
23‧‧‧Outer chain pin hole
24‧‧‧ middle section of the outer panel
25‧‧‧Slope
30A‧‧‧First skew chain plate
30B‧‧‧Second skewed chain plate
31A, 31B‧‧‧ first section
32A, 32B‧‧‧ second section
33A, 33B‧‧‧Connected section
34A, 34B‧‧‧Chain pin hole
35A, 35B‧‧ ‧ chain roller pivot flange
40‧‧‧Chain Roller
41‧‧‧Axis hole
50‧‧‧Chain
A‧‧‧ front and rear axial θ1, θ2‧‧‧ skewed arc
2‧‧‧Front sprocket
3‧‧‧After sprocket
4‧‧‧ pedal drive shaft
5‧‧‧ rear wheel axle

1 is a partial perspective view of a preferred embodiment of the present asymmetric chain. 2 is a perspective exploded view of the link unit in the preferred embodiment of the asymmetric chain shown in FIG. 1. 3 is a top plan view of a preferred embodiment of the asymmetric chain of FIG. 1. 4 is a side elevational view of the preferred embodiment of the asymmetric chain of FIG. 1. Figure 5 is a side plan view of another preferred embodiment of the present asymmetric chain. Figure 6 is a side plan view of another preferred embodiment of the present asymmetric chain. 7 is a top plan view showing a preferred embodiment of the asymmetric chain shown in FIG. 1 applied to a bicycle shifting transmission mechanism. Figure 8 is a top plan view showing the lateral deflection of the preferred embodiment of the asymmetric chain of Figure 1.

1‧‧‧Asymmetric chain

1A‧‧‧ link unit

10‧‧‧Inner chain board

11‧‧‧First inner panel

12‧‧‧Second inner plate section

20‧‧‧Outer chain board

21‧‧‧First outer panel

22‧‧‧Second outer plate section

30A‧‧‧First skew chain plate

30B‧‧‧Second skewed chain plate

31A, 31B‧‧‧ first section

32A, 32B‧‧‧ second section

33A, 33B‧‧‧Connected section

40‧‧‧Chain Roller

50‧‧‧Chain

Claims (10)

An asymmetric chain includes a plurality of link units, the plurality of link units are sequentially connected in series, and the link unit comprises: an inner link plate, wherein the opposite ends are respectively a first inner plate segment and a second inner plate section, an inner inner chain pin hole is formed in each of the first inner plate segment and the second inner plate segment; and an outer chain plate has opposite ends respectively being a first outer plate segment and a second outer plate a segment, the first outer plate segment and the second outer plate segment each form an outer chain pin hole, and the first outer plate segment and the second outer plate segment of the outer chain plate can be respectively disposed on the second inner chain plate The outer side of the inner plate section and the outer side of the first inner plate section of the other inner chain plate, the outer chain pin hole corresponding to the inner chain pin hole; a first deflecting link plate comprising a first section and a second section And a connecting section, each of the first section and the second section forms a chain pin hole, the first section is offset from the second section in the inward direction section, and the engaging section is obliquely connected to the first section Between the segment and the second segment, the first skewed link plate is spaced apart from the inner side of the inner link plate; a second skewed link plate includes a first segment and a second segment And a connecting section, each of the first section and the second section forms a chain pin hole, the first section is segmentally offset with respect to the second section in an inward direction, and the engaging section is obliquely connected to the first section Between the segment and the second segment, the second deflecting link is spaced apart from the outer link, and the first segment of the second deflecting link is disposed on the inner side of the second segment of the first skewed link The first section of the second skewed link plate corresponds to the second inner panel section of the inner link plate, and the first inner plate section of the inner link plate of the other link unit can be provided therebetween and the corresponding section a first section of a skewed chain plate is placed together; the two chain rollers each have a shaft hole, and one of the two chain rollers is disposed on the first inner plate segment of the inner chain plate and the first skew chain Between the first sections of the plate, another chain roller is disposed between the second inner plate section of the inner link plate and the first section of the second skew link plate; and the two chain pins are respectively pivotally connected An outer chain pin hole of the first outer plate section of the chain plate, an inner chain pin hole of the second inner plate section of the inner chain plate, a shaft hole of the chain roller, and a chain pin hole of the first section of the second skew chain plate With the first skewed chain plate Chain pin holes in the two sections. The asymmetric chain of claim 1, wherein the first segment of the first skewed link and the second deflected link are offset from the segment of the second segment toward the inner side. The thickness of the plate of the first skewed chain or the second deflected link. The asymmetric chain according to claim 1 or 2, wherein the inner side surface of the inner chain plate protrudes laterally from the edge of the inner chain pin hole of the first inner plate segment and the second inner plate segment, respectively. a roller pivoting flange, the first skewing chain and the second deflecting chain plate respectively projecting an annular chain roller pivoting flange on the side of the chain pin hole of the first section of the inner side thereof, the chain The shaft hole diameter of the roller corresponds to the outer diameter of the chain roller pivoting flange, the chain roller pivot flange of the first inner plate segment and the second inner plate segment of the inner link plate and the first skew link plate and the second skew link plate The chain roller pivot flanges can be respectively pivoted in the shaft holes of the side adjacent chain rollers, and the chain rollers pivotally engage the flanges and pass through the chain pins. The asymmetric chain according to claim 1 or 2, wherein the outer link plate is an outer middle plate between the first outer plate segment and the second outer plate segment, and the outer outer side of the outer link plate is outside A slope is formed on the upper and lower sides of the middle portion of the middle plate, and the middle portion of the outer plate is formed at the inclined surface to decrease in thickness from the inside to the outside. The asymmetric chain according to claim 3, wherein the outer link plate is an outer plate middle section between the first outer plate segment and the second outer plate segment, and the outer outer surface of the outer link plate is at the middle of the outer plate A slope is formed on each of the upper and lower sides, and the middle portion of the outer panel is formed at the slope to decrease in thickness from the inside to the outside. The asymmetric chain of claim 1 or 2, wherein the upper and lower side edges of the engaging section of the first skewing link and the second deflecting link form an arcuate recess that is concave toward the center. The asymmetric chain of claim 5, wherein the upper and lower side edges of the engaging section of the first skewing link and the second deflecting link form an arcuate concave edge that is concave toward the center. The asymmetric chain of claim 1 or 2, wherein the engaging section of the first skewing link and the second deflecting link form a central concave at a side edge of the adjacent sprocket The arcing edge of the arcing portion forms a straight edge which is flush with the periphery of the first skewing link and the second deflecting link at a side edge thereof away from the sprocket. The asymmetric chain of claim 3, wherein the engaging section of the first skewing link and the second skewing link form a centrally concave arc at a side edge of one of the adjacent sprocket a concave edge, the engaging section forming a straight edge flush with a peripheral edge of the first skewing link and the second deflecting link at a side edge thereof away from the sprocket. The asymmetric chain of claim 5, wherein the engaging section of the first skewing link and the second deflecting link form a centrally concave arc at a side edge of one of the adjacent sprocket a concave edge, the engaging section forming a straight edge flush with a peripheral edge of the first skewing link and the second deflecting link at a side edge thereof away from the sprocket.