TWM603072U

TWM603072U - Toothed chain

Info

Publication number: TWM603072U
Application number: TW109209374U
Authority: TW
Inventors: 吳厚德
Original assignee: 岳盟企業股份有限公司
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2020-10-21
Also published as: CN212899544U

Abstract

一種齒形鏈，包含交錯設置的數個內鏈節與數個外鏈節，及數支串接該等內鏈節與該等外鏈節的銷軸。每一個該內鏈節包括數個相對設置的內鏈片，每一個該內鏈片具有兩個內鏈孔，定義一條通過該等內鏈孔中心的連心線，每一個該內鏈片還具有一個位於該連心線之一側的外側面、兩個分別由該外側面之兩側彎弧延伸至該連心線且分別圍繞該等內鏈孔的圓弧面、一個位於該連心線之另一側的嚙合面、兩個分別由該嚙合面之兩端朝該等圓弧面的方向傾斜延伸的斜切面，及兩個分別連接該等斜切面與該等圓弧面且徑向往外隆凸的突出面。每一個該銷軸的外徑為2.70mm。藉由上述突出面的補強結構及所述銷軸的大徑設計，確能提升該齒形鏈的機械性質。A toothed chain includes a plurality of inner chain links and a plurality of outer chain links arranged alternately, and a plurality of pins connecting the inner chain links and the outer chain links in series. Each inner chain link includes a plurality of inner chain pieces arranged oppositely, and each inner chain piece has two inner chain holes, which define a connecting center line passing through the center of the inner chain holes. It has an outer side surface located on one side of the connecting center line, two arc surfaces that extend from both sides of the outer side surface to the connecting center line and respectively surround the inner chain holes, and one is located at the connecting center The meshing surface on the other side of the line, two oblique cut surfaces extending obliquely from both ends of the meshing surface in the direction of the arc surfaces, and two oblique cut surfaces respectively connecting the oblique cut surfaces and the arc surfaces with diameters Longing for the protruding surface outwardly. The outer diameter of each pin is 2.70 mm. With the above-mentioned reinforcing structure of the protruding surface and the large-diameter design of the pin, the mechanical properties of the toothed chain can be improved.

Description

齒形鏈Toothed chain

本新型是有關於一種鏈條，特別是指一種用於傳輸動力的齒形鏈。The new model relates to a chain, especially a toothed chain for power transmission.

參閱圖1、2，一種現有齒形鏈1，適用於與一個鏈輪2嚙合。該現有齒形鏈1包含交錯設置的數個內鏈節11與數個外鏈節12，及數支串接該等內鏈節11與該等外鏈節12的銷軸13。每一個該內鏈節11包括兩個相對設置的內鏈片111，每一個該內鏈片111具有兩個相間隔的內鏈孔112、一個形成於鄰近該鏈輪2之一側的齒槽113，及兩個分別間隔形成在該齒槽113兩側的斜切邊114，定義該等內鏈孔111中心間的距離為一個節距P。Referring to Figures 1 and 2, an existing toothed chain 1 is suitable for meshing with a sprocket 2. The existing toothed chain 1 includes a plurality of inner chain links 11 and a plurality of outer chain links 12 arranged in a staggered manner, and a plurality of pins 13 connected in series with the inner chain links 11 and the outer chain links 12. Each inner chain link 11 includes two opposite inner chain pieces 111, each of the inner chain pieces 111 has two spaced apart inner chain holes 112, and a tooth groove formed adjacent to one side of the sprocket 2 113, and two beveled edges 114 separately formed on both sides of the tooth groove 113, define the distance between the centers of the inner chain holes 111 as a pitch P.

每一個該外鏈節12包括兩個相對設置且位在該等內鏈片111兩側的外鏈片121，及一個位在該等內鏈片111之間的中間鏈片122。每一個該外鏈片121具有兩個相間隔的外鏈孔123。每一個該中間鏈片122具有一個形成於鄰近該鏈輪2之一側的卡槽124，每一個該卡槽124對應位在相鄰的兩個該齒槽113之間，依序嚙合於該鏈輪2。每一個該銷軸13的外徑為2.40mm，是穿伸於相連通之該等內鏈孔112及該等外鏈孔123中。Each of the outer links 12 includes two oppositely arranged outer link pieces 121 located on two sides of the inner link pieces 111 and a middle link piece 122 located between the inner link pieces 111. Each outer link piece 121 has two outer link holes 123 spaced apart. Each of the intermediate link pieces 122 has a groove 124 formed on a side adjacent to the sprocket 2, and each of the grooves 124 is correspondingly located between two adjacent tooth grooves 113, and is sequentially engaged with the Sprocket 2. The outer diameter of each pin 13 is 2.40 mm and extends through the inner chain holes 112 and the outer chain holes 123 that are connected.

該現有齒形鏈1雖然可以搭配該鏈輪2，來達到傳動機械體的目的，但是當該齒形鏈1運作時，該等內鏈片111與該等外鏈片121及該等中間鏈片122將會受到相反方向的拉力，就串接在單一個該銷軸13上之所述鏈片111、121、122的受力狀態來看，兩個該內鏈片111將會受到朝向一個方向的拉力，而兩個該外鏈片121及該中間鏈片122則會受到朝向另一個方向的拉力，由於所述反向的拉力相等，所以每一個該內鏈片111都需要承擔較大的作用力，久而久之，各該斜切邊114與各該內鏈孔111之間的一個最窄部位115，將會因為受力面積小，當應力集中於此處時，容易出現斷裂傷痕，所以該現有齒形鏈1之抗拉強度小且疲勞強度低。反之，若是在不改變各該內鏈片111之節距P大小的情況下，縮小該等內鏈孔112的尺寸，雖能讓該等最窄部位114變寬以增加強度，但是如此一來卻會相對使得該銷軸13變細，造成該銷軸13之耐磨性能不佳的情形。因此該現有齒形鏈1之設計仍有待改善。Although the existing toothed chain 1 can be matched with the sprocket 2 to achieve the purpose of driving the mechanical body, when the toothed chain 1 is operating, the inner chain pieces 111 and the outer chain pieces 121 and the intermediate chains The piece 122 will be pulled in the opposite direction. From the point of view of the stress state of the chain pieces 111, 121, 122 connected in series to a single pin shaft 13, the two inner chain pieces 111 will face one The two outer chain pieces 121 and the middle chain piece 122 will receive a pulling force in the other direction. Since the opposite pulling forces are equal, each inner chain piece 111 needs to bear a greater Over time, the narrowest part 115 between each of the chamfered edges 114 and each of the inner chain holes 111 will be due to the small area of force. When the stress is concentrated here, fracture scars are likely to occur, so The existing toothed chain 1 has low tensile strength and low fatigue strength. Conversely, if the size of the inner chain holes 112 is reduced without changing the size of the pitch P of each inner chain piece 111, although the narrowest part 114 can be widened to increase the strength, this However, the pin shaft 13 is relatively thinner, resulting in poor wear resistance of the pin shaft 13. Therefore, the design of the existing toothed chain 1 still needs to be improved.

因此，本新型之目的，即在提供一種能夠克服先前技術的至少一個缺點的齒形鏈。Therefore, the purpose of the present invention is to provide a toothed chain that can overcome at least one of the disadvantages of the prior art.

於是，本新型齒形鏈，適用於與一個鏈輪嚙合，該齒形鏈包含沿著一個長度方向交錯設置的數個內鏈節與數個外鏈節，及數支串接該等內鏈節與該等外鏈節而使該等外鏈節能相對於該等內鏈節樞擺的銷軸；每一個該內鏈節包括數個相對設置的內鏈片，每一個該外鏈節包括數個相對設置的外鏈片。Therefore, the new toothed chain is suitable for meshing with a sprocket. The toothed chain includes a number of inner links and a number of outer links that are staggered along a length direction, and a number of the inner chains are connected in series. And the outer chain links so that the outer chains can save energy relative to the pin shafts of the inner chain links; each inner chain link includes a plurality of inner chain pieces arranged oppositely, and each outer chain link includes Several oppositely arranged outer chain pieces.

每一個該內鏈片具有兩個沿著該長度方向間隔排列且供相對應之銷軸穿設的內鏈孔，定義一條通過該等內鏈孔中心的連心線，每一個該內鏈片還具有一個位於該連心線遠離該鏈輪之一側的外側面、兩個分別由該外側面之兩側彎弧延伸至該連心線且分別圍繞該等內鏈孔的圓弧面、一個位於該連心線鄰近該鏈輪之一側且中央界定出一個朝該等內鏈孔之間的部位凹入之齒槽的嚙合面、兩個分別由該嚙合面之兩端朝該等圓弧面的方向傾斜延伸的斜切面，及兩個分別連接該等斜切面與該等圓弧面且徑向往外隆凸的突出面；每一個該銷軸的外徑為2.70mm。Each inner chain piece has two inner chain holes arranged at intervals along the length direction for the corresponding pin to pass through, defining a connecting line passing through the center of the inner chain holes, and each inner chain piece It also has an outer side surface located on one side of the connecting center line away from the sprocket, two arc surfaces that are curved from both sides of the outer side surface to the connecting center line and respectively surround the inner chain holes, One meshing surface is located on one side of the connecting center line adjacent to the sprocket and defines a tooth groove recessed toward the part between the inner chain holes in the center, and two meshing surfaces face the two ends of the meshing surface respectively. The oblique cut surface extending obliquely in the direction of the arc surface, and two protruding surfaces respectively connecting the oblique cut surface and the arc surface and protruding radially outward; the outer diameter of each pin is 2.70mm.

本新型之功效在於：藉由上述突出面的補強設計及所述銷軸的大徑設計，確能提升該齒形鏈的機械性質。The effect of the present invention is that the above-mentioned reinforcement design of the protruding surface and the large diameter design of the pin shaft can indeed improve the mechanical properties of the toothed chain.

參閱圖3、4、5，本新型齒形鏈4之一實施例，適用於與一個鏈輪3嚙合，該鏈輪3具有數個彼此角度間隔地形成於周緣的卡齒31。該齒形鏈4包含沿著一個長度方向40交錯設置的數個內鏈節5與數個外鏈節6，及數支沿著該長度方向40間隔排列且串接該等內鏈節5與該等外鏈節6的銷軸7，該等外鏈節6能與該等內鏈節5相對樞擺。Referring to Figures 3, 4, and 5, an embodiment of the toothed chain 4 of the present invention is suitable for meshing with a sprocket 3 having a plurality of clamping teeth 31 formed on the periphery at angular intervals. The toothed chain 4 includes a plurality of inner chain links 5 and a plurality of outer chain links 6 staggered along a length direction 40, and a plurality of branches are arranged at intervals along the length direction 40 and are connected in series with the inner chain links 5 and The pins 7 of the outer links 6 can pivot relative to the inner links 5.

每一個該內鏈節5包括兩個相對設置的內鏈片51，每一個該內鏈片51具有兩個沿著該長度方向40間隔排列且供相對應之銷軸7穿設的內鏈孔52，及一個形成於鄰近該鏈輪3之一側中央且朝該等內鏈孔52之間的部位凹入的齒槽53。定義一條通過該等內鏈孔52中心的連心線50，每一個該內鏈片51還具有一個位於該連心線50遠離該鏈輪3之一側的外側面511、兩個分別由該外側面511之兩側彎弧延伸至該連心線50且分別圍繞該等內鏈孔52的圓弧面512、一個位於該連心線50鄰近該鏈輪3之一側的嚙合面513、兩個分別由該嚙合面513之兩端朝該等圓弧面512的方向傾斜延伸的斜切面514，及兩個分別連接該等斜切面514與該等圓弧面512且徑向往外隆凸的突出面515。該嚙合面513具有兩個與該等內鏈孔52間隔對應且分別朝該鏈輪3方向突出的凸齒面部516，及一個連接該等凸齒面部516且界定出該齒槽53的凹槽面部517。每一個該突出面515具有一個連接相對應之該圓弧面512的圓弧面部518，及一個由該圓弧面部518彎曲連接至相對應之該斜切面514的連接面部519。Each inner link 5 includes two oppositely arranged inner chain pieces 51, and each of the inner chain pieces 51 has two inner chain holes arranged at intervals along the length direction 40 and for the corresponding pin 7 to pass through. 52, and a tooth groove 53 formed adjacent to the center of one side of the sprocket 3 and recessed toward the part between the inner chain holes 52. A connecting center line 50 passing through the center of the inner chain holes 52 is defined, and each inner chain piece 51 also has an outer side surface 511 located on the side of the connecting center line 50 away from the sprocket 3, and two outer sides 511 respectively formed by the Both sides of the outer side surface 511 are curved arcs extending to the connecting center line 50 and respectively surrounding the arc surfaces 512 of the inner chain holes 52, a meshing surface 513 located on a side of the connecting center line 50 adjacent to the sprocket 3, Two oblique surfaces 514 extending obliquely from both ends of the engagement surface 513 in the direction of the arc surfaces 512, and two respectively connecting the oblique surfaces 514 and the arc surfaces 512 and protruding radially outward的projecting surface 515. The meshing surface 513 has two convex tooth surfaces 516 corresponding to the inner chain holes 52 and protruding toward the sprocket 3 respectively, and a groove connecting the convex tooth surfaces 516 and defining the tooth groove 53 Face 517. Each of the protruding surfaces 515 has a circular arc surface 518 connected to the corresponding circular arc surface 512 and a connecting surface 519 curvedly connected to the corresponding chamfered surface 514 by the circular arc surface 518.

每一個該外鏈節6包括兩個相對設置且位在相鄰的兩個該內鏈節5的兩側之間的外鏈片61，及一個與該等外鏈片61相對設置且中介位在該等內鏈片51之間的中間鏈片62。每一個該外鏈片61具有兩個沿著該長度方向40間隔排列且供相對應之銷軸7穿設的外鏈孔63。該中間鏈片62具有一個凹設於鄰近該鏈輪3之一側的卡槽64。該卡槽64沿著該長度方向40對應位在相鄰的兩個該齒槽53之間。Each outer chain link 6 includes two outer chain pieces 61 arranged oppositely and located between the two sides of the two adjacent inner chain links 5, and an intermediate piece 61 arranged opposite to the outer chain pieces 61 The middle chain piece 62 between the inner chain pieces 51. Each outer chain piece 61 has two outer chain holes 63 arranged at intervals along the length direction 40 for the corresponding pin 7 to pass through. The middle chain piece 62 has a groove 64 recessed on a side adjacent to the sprocket 3. The slot 64 is correspondingly located between two adjacent tooth slots 53 along the length direction 40.

要注意的是每一個該內鏈節5的所述內鏈片51的數目不限於兩個，依實際需求可以是三個、四個…等，而中間鏈片62的數目則少於該等內鏈片51一個，且交錯設置在該等內鏈片51之間，當然在設計上甚至也可以省略所述中間鏈片62的設置，並使該等內鏈片51合併或同體成形為一個，在此不再舉例說明。It should be noted that the number of the inner chain pieces 51 of each inner chain link 5 is not limited to two, and can be three, four... etc. according to actual needs, while the number of the middle chain pieces 62 is less than these. There is one inner chain piece 51, and it is arranged staggered between the inner chain pieces 51. Of course, the arrangement of the middle chain piece 62 can also be omitted in the design, and the inner chain pieces 51 are combined or formed into one body. One, no more examples here.

每一個該銷軸7垂直於該長度方向40地穿過相連通之該等內鏈孔52及該等外鏈孔63，並於兩端面上分別沖設有兩個擴槽71，可擴大端緣外徑藉以定位該等外鏈片61。Each of the pin shafts 7 passes through the inner chain holes 52 and the outer chain holes 63 that are connected perpendicular to the length direction 40, and is punched with two expansion grooves 71 on both ends respectively, and the ends can be enlarged The outer diameter of the edge is used to position the outer chain pieces 61.

進一步說明上述構件之各部位尺寸，在本實施例中，每一個該內鏈孔52的孔徑ψ1為2.75mm，定義每一個該內鏈片51之該等內鏈孔52中心間的距離為一個節距P，該節距P為6.35mm。每一個該圓弧面512的中心相同於相對應之該內鏈孔52的中心，且其曲率半徑為0.441P。每一個該斜切面514與該內鏈孔52中心間的最短距離為0.394P，位在連接該突出面515之該連接面部519處。每一個該突出面515的圓弧面部518的中心相同於相對應之該圓弧面512的中心，且其曲率半徑為0.441P。每一個該外鏈孔63的孔徑ψ2為2.70mm。每一個該銷軸7的外徑d為2.70mm。但在實施上也可以改變上述尺寸，不以本實施例為限。To further explain the size of each part of the above-mentioned components, in this embodiment, the aperture ψ1 of each inner chain hole 52 is 2.75mm, and the distance between the centers of the inner chain holes 52 of each inner chain piece 51 is defined as one Pitch P, the pitch P is 6.35mm. The center of each arc surface 512 is the same as the center of the corresponding inner chain hole 52, and the radius of curvature is 0.441P. The shortest distance between the chamfered surface 514 and the center of the inner chain hole 52 is 0.394P, which is located at the connecting surface 519 connecting the protruding surface 515. The center of the arc surface 518 of each protruding surface 515 is the same as the center of the corresponding arc surface 512, and the radius of curvature is 0.441P. The hole diameter ψ2 of each outer link hole 63 is 2.70 mm. The outer diameter d of each pin 7 is 2.70 mm. However, the above-mentioned dimensions can also be changed in implementation, which is not limited to this embodiment.

在該齒形鏈4運作時，當該等內鏈片51與該等外鏈片61及該等中間鏈片62受到相反方向的拉力時，由於每一個該內鏈片51皆可藉由該突出面515的設計來強化結構，增加受力面積大，使得受力完整、平均，不易出現斷裂傷痕，因此能提升該齒形鏈4之抗拉強度及疲勞強度。此外，該齒形鏈4在該等內鏈片51結構之機械性質進一步優化的情況下，還能相對增加該等銷軸7的外徑，如此一來即能分散拉力，並提升耐磨性能。When the toothed chain 4 is operating, when the inner chain pieces 51, the outer chain pieces 61 and the intermediate chain pieces 62 are pulled in opposite directions, each of the inner chain pieces 51 can use the The protruding surface 515 is designed to strengthen the structure and increase the force-bearing area, so that the force is complete and even, and it is not prone to fracture scars. Therefore, the tensile strength and fatigue strength of the toothed chain 4 can be improved. In addition, the toothed chain 4 can relatively increase the outer diameter of the pin shafts 7 when the mechanical properties of the inner chain pieces 51 are further optimized, so that the pulling force can be dispersed and the wear resistance can be improved. .

綜上所述，本新型齒形鏈4，藉由上述突出面515的補強結構及所述銷軸7的大徑設計，可具有抗拉強度高，疲勞強度大，耐磨性能佳等功效，確能提升該齒形鏈4的機械性質，達成本新型之目的。In summary, the new toothed chain 4, through the above-mentioned reinforcing structure of the protruding surface 515 and the large diameter design of the pin 7, can have the effects of high tensile strength, high fatigue strength, and good wear resistance. It can indeed improve the mechanical properties of the toothed chain 4 and achieve the purpose of new-style cost.

惟以上所述者，僅為本新型之實施例而已，當不能以此限定本新型實施之範圍，凡是依本新型申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本新型專利涵蓋之範圍內。However, the above-mentioned are only examples of the present model, and should not be used to limit the scope of implementation of the present model, all simple equivalent changes and modifications made in accordance with the patent scope of the present model application and the contents of the patent specification still belong to This new patent covers the scope.

3:鏈輪 31:卡齒 4:齒形鏈 40:長度方向 5:內鏈節 50:連心線 51:內鏈片 52:內鏈孔 53:齒槽 511:外側面 512:圓弧面 513:嚙合面 514:斜切面 515:突出面 516:凸齒面部 517:凹槽面部 518:圓弧面部 519:連接面部 6:外鏈節 61:外鏈片 62:中間鏈片 63:外鏈孔 64:卡槽 7:銷軸 71:擴槽 ψ1:孔徑 ψ2:孔徑 P:節距 d:外徑 3: sprocket 31: stuck teeth 4: toothed chain 40: length direction 5: inner link 50: Connect the heart line 51: inner chain piece 52: inner chain hole 53: cogging 511: outer side 512: arc surface 513: Meshing surface 514: Bevel 515: protruding surface 516: Convex Tooth Face 517: Groove Face 518: arc face 519: Connect Face 6: Outer link 61: outer chain piece 62: middle chain 63: outer chain hole 64: card slot 7: Pin shaft 71: Expansion ψ1: Aperture ψ2: Aperture P: Pitch d: outer diameter

本新型之其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中：圖1是一不完整的局部分解側視圖，說明一種現有齒形鏈適用於與一個鏈輪嚙合；圖2是一局部分解俯視圖，說明該現有齒形鏈的構造；圖3是一不完整的局部分解側視圖，說明本新型齒形鏈的一實施例適用於與一鏈輪嚙合的狀態；圖4是一局部分解俯視圖，說明該實施例的構造；及圖5是一側視放大圖，說明該實施例的一個內鏈片。 Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is an incomplete partial exploded side view, illustrating that an existing toothed chain is suitable for meshing with a sprocket; Figure 2 is a partial exploded top view illustrating the structure of the existing toothed chain; Figure 3 is an incomplete partial exploded side view, illustrating that an embodiment of the new toothed chain is suitable for meshing with a sprocket; Figure 4 is a partially exploded top view illustrating the structure of this embodiment; and Fig. 5 is an enlarged side view illustrating an inner link of the embodiment.

50:連心線 50: Connect the Heart Line

51:內鏈片 51: inner chain piece

52:內鏈孔 52: inner chain hole

53:齒槽 53: cogging

511:外側面 511: outer side

512:圓弧面 512: arc surface

513:嚙合面 513: Meshing surface

514:斜切面 514: Bevel

515:突出面 515: protruding surface

516:凸齒面部 516: Convex Tooth Face

517:凹槽面部 517: Groove Face

518:圓弧面部 518: arc face

519:連接面部 519: Connect Face

ψ 1:孔徑 ψ 1: Aperture

P:節距 P: Pitch

Claims

一種齒形鏈，適用於與一個鏈輪嚙合，該齒形鏈包含：沿著一個長度方向交錯設置的數個內鏈節與數個外鏈節，及數支串接該等內鏈節與該等外鏈節而使該等外鏈節能相對於該等內鏈節樞擺的銷軸；每一個該內鏈節包括數個相對設置的內鏈片，每一個該外鏈節包括數個相對設置的外鏈片；每一個該內鏈片具有兩個沿著該長度方向間隔排列且供相對應之銷軸穿設的內鏈孔，定義一條通過該等內鏈孔中心的連心線，每一個該內鏈片還具有一個位於該連心線遠離該鏈輪之一側的外側面、兩個分別由該外側面之兩側彎弧延伸至該連心線且分別圍繞該等內鏈孔的圓弧面、一個位於該連心線鄰近該鏈輪之一側且中央界定出一個朝該等內鏈孔之間的部位凹入之齒槽的嚙合面、兩個分別由該嚙合面之兩端朝該等圓弧面的方向傾斜延伸的斜切面，及兩個分別連接該等斜切面與該等圓弧面且徑向往外隆凸的突出面；每一個該銷軸的外徑為2.70mm。 A toothed chain suitable for meshing with a sprocket. The toothed chain comprises: a plurality of inner chain links and a plurality of outer chain links staggered along a length direction, and a plurality of branches connected in series with the inner chain links and The outer chain links enable the outer chains to save energy relative to the pin shafts of the inner chain links pivoting; each inner chain link includes a plurality of relatively arranged inner chain pieces, and each outer chain link includes a plurality of Relatively set outer chain pieces; Each inner chain piece has two inner chain holes arranged at intervals along the length direction for the corresponding pin to pass through, defining a connecting line passing through the center of the inner chain holes, and each inner chain piece It also has an outer side surface located on one side of the connecting center line away from the sprocket, two arc surfaces that are curved from both sides of the outer side surface to the connecting center line and respectively surround the inner chain holes, One meshing surface is located on one side of the connecting center line adjacent to the sprocket and defines a tooth groove recessed toward the part between the inner chain holes in the center, and two meshing surfaces face the two ends of the meshing surface respectively. The oblique cut surface extending obliquely in the direction of the arc surface, and two protruding surfaces respectively connecting the oblique cut surface and the arc surface and protruding radially outward; the outer diameter of each pin is 2.70mm.

如請求項1所述的齒形鏈，其中，定義每一個該內鏈片之該等內鏈孔中心間的距離為一個節距P，每一個該斜切面與該內鏈孔中心間的最短距離為0.394P。The toothed chain according to claim 1, wherein the distance between the centers of the inner chain holes of each inner chain piece is defined as a pitch P, and the shortest distance between each of the chamfered surface and the center of the inner chain hole The distance is 0.394P.

如請求項2所述的齒形鏈，其中，每一個該圓弧面的曲率半徑為0.441P。The toothed chain according to claim 2, wherein the radius of curvature of each arc surface is 0.441P.

如請求項3所述的齒形鏈，其中，該節距P為6.35mm。The toothed chain according to claim 3, wherein the pitch P is 6.35 mm.

如請求項2、3或4所述的齒形鏈，其中，每一個該內鏈孔的孔徑為2.75mm。The toothed chain according to claim 2, 3 or 4, wherein the diameter of each inner chain hole is 2.75 mm.

如請求項5所述的齒形鏈，其中，每一個該突出面具有一個連接相對應之該圓弧面且曲率半徑為0.441P的圓弧面部，及一個由該圓弧面部彎曲連接至相對應之該斜切面的連接面部。The toothed chain according to claim 5, wherein each of the protruding surfaces has an arc surface connecting the corresponding arc surface and having a radius of curvature of 0.441P, and a curved surface connected to the corresponding arc surface by the arc surface Correspond to the connecting face of the chamfered surface.

如請求項1所述的齒形鏈，其中，每一個該外鏈節包括兩個位在相鄰的兩個該內鏈節之兩側的該外鏈片，每一個該外鏈片具有兩個沿著該長度方向間隔排列且供相對應之銷軸穿設的外鏈孔，每一個該外鏈孔的孔徑為2.70mm。The toothed chain according to claim 1, wherein each of the outer links includes two outer links located on both sides of two adjacent inner links, and each outer link has two A number of outer chain holes arranged at intervals along the length direction for the corresponding pin to pass through, and the hole diameter of each outer chain hole is 2.70mm.

如請求項7所述的齒形鏈，其中，每一個該外鏈節還包括至少一個與該等外鏈片相對設置且中介位在該等內鏈片之間的中間鏈片，該至少一個中間鏈片具有一個凹設於鄰近該鏈輪之一側的卡槽，該卡槽沿著該長度方向對應位在相鄰的兩個該齒槽之間。The toothed chain according to claim 7, wherein each of the outer links further includes at least one intermediate link arranged opposite to the outer links and interposed between the inner links, the at least one The middle chain piece has a slot recessed on one side adjacent to the sprocket, and the slot is correspondingly located between two adjacent tooth slots along the length direction.