、發明說明： 【發明所屬之技術領域】 本發明是關於-種鏈條，特別是指一種在鍵片上設置 減重孔之可減輕重量的鏈條。 【先前技術】 參閱圖1、2’以往可減輕重量之鏈條通常包含：數個 串接單元1 ’每個串接單元i都包括：兩片内外平行之内鍵 片11、兩片分別位在内鏈片u外側的外鏈片12、兩個左右 間隔地位在内鏈片u間的鏈輕13，以及兩支串接相鄰之鍵 片11、12的鏈軸14。上述内鏈片n皆具有兩個左右間隔 之&。卩111，以及一位在該等端部111間的銜接部112，每 個端部111皆具有一供鏈軸14穿過的軸樞孔ιΐ3，以及一 個自軸柩孔113周緣往另一内鏈片u突出的突柱114，而 該銜接部112除了具有兩條分別位在上方及下方並往内鏈片 11之一圓心連線丨3弧彎的輪廓面丨丨5外，還具有一個界定 出一減重孔10的孔圍繞面15。 其中-該孔圍繞面15包括：兩段分別鄰近軸樞孔113的 第一弧段151，以及兩個銜接在該等第一弧段151間的第二 弧段152，上述第一弧段151分別圍繞一圓心153 ,並具有 一個鄰近軸樞孔113並位在圓心連線13上的基準點154, 以及兩與第二弧段152接連的端點155，前述端點154皆位 在兩條垂直於圓心連線13並通過基準點154之基準連線Μ 間0 而該等外鏈片12亦具有兩個端部121，以及一個連接 在端部121間的銜接部122，於銜接部122上亦具有一個減 重孔123，由於該減重孔123的形狀與内鏈片n之減重孔 1〇相同，不再說明。而該等鏈軸14是包括—段對應鏈片n 、12的軸基部141，以及兩段位在軸基部141相反端並突 出於外鏈片12的鉚合部142,在該軸基部141及鉚合部 142間界定出一個中空道143,其中該等鉚合部142的厚度 與轴基部142相同。當外力施加在鏈轴14之柳合部142時 ，前述鉚合部142將向周緣擴散形成一個鉚合突緣144。即 在未鉚合狀態下，該鏈軸14具有兩個厚度相同的柳合部 而在鉚合後該等鉚合部142會向外㈣I]擴展形成 鉚合突緣144。 習知鏈條雖可藉由内、外鏈片„、12的減重孔1〇、 …Λ到減輕鏈條整體重量的目的，但是在減輕重量的 =:=。而在鏈軸14的設計上，由於該鏈" 之軸基。卩141及鉚合部丨 142 l 的；度—致，因此，當鉚合部 又/ 〇夕擴展形成鉚合突緣144時，令柳人办緣 H4容易偏斜，而無法均勻擴散在，“ K緣 合品質不穩定。 二、43周緣，造成鉚 【發明内容】 本發明之主要目& 情況下，進_步減 S供—種在不影響結構強度的 本發明可減可減輕重量的鏈條。 今奴麵重量 串接單元都包括兩片 :數個串接單元，每個 々弟一鍵片、雨y货 串接相鄰鏈片的鏈軸，至 片第二鏈片’以及兩支 夕/、中一個第一鏈片具有兩個左 右間隔且各別具有一供鏈軸穿過之軸樞孔的端部、一個介 於該等端部間的銜接部、一條通過該等軸樞孔之一圓心的 圓心連線’以及兩條分別通過該等圓心並和圓心連線垂直 的圓心垂線。該銜接部具有一個界定出一減重孔的孔圍繞 面，此該孔圍繞面包括兩個各別鄰近軸樞孔的第一段，以 及兩個銜接該等第一段的第二段，每個第一段都具有一位 在圓’“連線上的基準點’以及兩個位在該圓心連線之相反 側的端點，又該第一鏈片更具有兩條分別通過基準點並垂 直於圓心連線之基準垂線，而該等端點是不超過該基準垂 線地位在相鄰之圓心垂線及基準垂線之間。 本發明的有益功效在於：藉由改變減重孔的形狀，可 以在不衫響鏈條結構強度的情況下擴大減重孔的面積，以 達到進一步減輕鏈條重量之目的。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之較佳實施例的詳細說明中，將可清楚 的呈現。 在本發明被詳細描述之前，要注意的是，在以下的說 明内容中，類似的元件是以相同的編號來表示 參閲圖3、4、5，本發明鏈條之第一較佳實施例包含： 數個左右設置之串接單元3。每個串接單元3都包括：兩片 内外平行之第一鏈片4、兩個可轉動地位在該等第一鏈片4 間的鏈報3 1、兩片分別位在同側之第—鏈片4外側且部分 重登的第二鏈片6，以及兩支串接相鄰之第一及第二鏈片4 、6的鍵轴5。 其中該等第一鏈片4都具有兩個左右間隔之端部41， 以及一個位在端部41間的銜接部42，每個端部41都具有 一個端部圓心411、一個圍繞該端部圓心411的端部輪扉面 412、一個轴柩孔413，以及一個由軸樞孔413周緣往另一 第一鏈片4突出的突柱414。而該第一鏈片4還具有一條連 接該等端部圓心411的圓心連線43、兩條垂直於該圓心連 線43並通過端部圓心411的圓心垂線44，以及兩條設在内 側面上並橫跨端部41及銜接部42的倒角40。 而該銜接部42具有兩個銜接在端部輪廓面4丨2間的銜 接輪廓面421，以及一個界定出一減重孔422的孔圍繞面 45在本貫把例中該#銜接輪廟面421是往中央弧凹的 凹弧狀。而該減重孔422是對稱地位在圓心連線43之相反 側，該孔圍繞面45包括：兩段分別鄰近相鄰之軸樞孔413 的第一段451，以及兩個銜接在第—段451之上方及下方的 第二段452 ’其中第—段451呈凹弧狀並圍繞鄰近之端部圓 心411，具有一個落在該圓心連線43上的基準點453，以及 兩個分別位在該圓心連線43之相反側_ 454,而該第 一鏈片4更具有兩條分別通過基準點453並垂直於圓心連 線43的基準线46，而該等端點4m位在相鄰之基準垂線 46及圓心垂線44間。本實施例之第二段心是銜接在第一 段451之端點454間，並順著銜接輪廓面421之弧彎曲線 弧彎。而該等鏈輥31是可轉動地套設在第—鏈片4之對應 突柱414間。 參閱圖3、5、6,本實施例之第二鏈片6都具有兩個左 右間隔的端部.61，以及一個位在上述端部61間的銜接部 62，母個端部61都具有一個供鏈軸5穿過的軸樞孔611， 而該銜接部62具有一個朝向第一鏈片4的内側面621、一 個外側面622、一個貫穿内、外側面621、622並界定出一 個減重孔623的孔圍繞面63，以及兩條連接在内外側面 62 i 622間的凹弧銜接輪廟面62〇，上述減重孔及孔 圍繞面63的形狀及構造都和第一鏈片4相同，不再贅述， 而孔圍繞面63亦具有兩條彎弧的第一段631，以及兩條彎 弧的第二段632。本實施例之第二鏈片6的兩軸枢孔6ιι之 圓心間的節距P假設為12·7刪，本實施例之減重孔623的 第一段63 1係以軸樞孔6丨i之圓心為圓心的彎弧狀，其半徑 較佳為.2.7咖〜3.3咖，因此，本實施例該第二鏈片6之孔圍 繞面63到相鄰之軸樞孔611間的最短距離贾丨則以 0.9 1.5mm為較佳，而該孔圍繞面63到銜接輪廓面62〇間 的最短距離W2則以1>4〜2.0mm為較佳。為設計各種尺寸大 小不一的鏈片，根據上述尺寸大小可推算出 Wl/P=0.07〜0.12，乃為較佳的比例設計。又本實施例第一鏈 片4之孔圍繞面45到軸樞孔413以及銜接輪廓面421間的 最短距離，亦和第二鏈片6相同，不再贅述。 而該銜接部62之内側面621更具有兩個位在對角位置 的第一凹緣625 '兩個與上述第一凹緣625鄰接且深度較淺 的第一凹緣626，以及兩個沿著邊緣設置並跨越第一及第二 凹緣625、626的導斜面627，而該外側面622具有兩個對 應第一凹緣625的第—Φ祕„ , 大緣628，以及兩個對應第二凹緣 626的第二突緣629，上述笛一空络, 之第大緣628大出的高度大於該 第二突緣629。 ，丰貫施例之鏈轴5包括m中⑭線設置且介 於第二鍵片6間的轴基部51，以及兩段位在轴基部51相反 端並突出於第二鏈片6的鉚合部52，在該軸基部51及娜合 部52間界定出一個轴向的中空道53，其中該轴基部η呈 有一個内環面511’以及—個相距内環面511等距的外環面 5二’而該鉚合部52具有-段和外環面512直線連接的外 :犬面521、一段.自外環突面521往中心軸線垂直延伸的外 端面522,以及一個自外端面522往内環面5ιι斜伸並界定 出一朝向中空道53之缺環52〇的鉚合斜面523，上述缺環 別之寬度们大於或等於〇.2mme 这、衣 參閱圖3、4、7,本實施例第—鏈片4的設計理念是讓 ^孔422沿著銜接輪廓面421以及軸樞孔413的弧度而 叹’即圖7中標示斜線的部位，而圖i、2所示之習知内鏈 片的減重孔1〇通常不會很大，但如果挖到最大時，由於 -疋採用外凸圓弧的設計，即假使如_ 7所示之習知内鍵 片U之減重孔1G加到最大，且假設該外凸圓弧之減重孔 10的減重面積為】’則本發明之内凸凹弧的減重卩似之 咸重面積可達將近12 ’即圖7中斜線標示部分的減重面積 :〇·2’由於本實施例之減重孔422的四個角落若採用銳角 -有應力集中的問題，故本實施例在該減重孔422的四個 角落各別形成—弧圓’藉此改善以上問題。上述減重孔422 1323321 與圖1之習知内鏈片11比較，具有4個擴孔區域423，由 於本發明之第一及第二鏈片4、6的重量都較習知者少，且 該等擴孔區域423位在第“鏈片4厚度較大的部位，而不 會影響到第一鏈片4的結構強度，故本發明該項設計確實 可在不影響結構強度的情況下，達到進一步減重的目的。 又本實施例在鏈軸5的設計上，主要是在鏈軸5之鉚 合部52上利周鉚合斜面523形成該缺環52〇，上述鉚合斜 面523可以在鏈轴5接受鉚合加工時，讓該鉚合部52比較 平均的往外周緣擴散，故本實施例之鏈軸5也可以在不影 響結合強度的情況下，讓鏈軸5在鉚合後更為均勻，使二 合=品質更穩定。依發明人實際測試’本發明之缺環52〇 的見度W3只要大於或等於〇2mm，即具有變形均勻之效果 特別說明的是’本發明第一實施例所定義之第一鏈片4 為：般俗稱的内鏈片，第二鏈片6為一般俗稱的外鏈片， 2述第-及第二鏈片4、6的定義只是為了方便說明，其 μ可相反的設計’即第―鏈片4亦可為外鏈片，第 :可為内鏈片。此外’本發明也不以同時在第第二鏈 片 4 ' 6上同時設置減重孔 h置减重孔422、623為必要，即只要在1 中一種鏈片4、6上設置減重孔422 八 預期之功效。 即可達到本發明 =8’本發明鏈條之第二較佳實施例的構造大践 A例相同，其與第—實施例的差別在於：第—及二 片4'6的構造，以下僅舉第二鏈片 - 户况明，即該第二 11 1323321 實施例之第二鏈片6亦包括兩間隔之端部6卜以及-銜接 部仏每個端部61亦各別具有一軸樞孔川，而該銜接部 62亦具有兩個分別位在上方及下方之銜接輪廓面㈣，以 及一個介於該等銜接輪廓面62〇間並界定出一減重孔⑵ 的孔圍繞面63 ’上述孔圍繞面63亦具有兩第一段631，以 及兩第632 ’上述第—段631是以軸樞孔…之圓心由 中‘。的狐弯狀。本實施例的特色在於：該等銜接輪廓面咖[Technical Field] The present invention relates to a chain, and more particularly to a chain which can reduce weight by providing a weight reducing hole on a key sheet. [Prior Art] Referring to Figures 1, 2', the conventional weight-reducing chain usually includes: a plurality of serial units 1 'each of the series units i includes: two inner and outer parallel inner keys 11 and two pieces respectively The outer chain piece 12 on the outer side of the inner chain piece u, the chain light 13 on the left and right sides of the inner chain piece u, and the two chain links 14 of the adjacent key pieces 11, 12 are connected in series. The inner chain pieces n have two left and right spacings &卩111, and a connecting portion 112 between the end portions 111, each end portion 111 has a shaft pivot hole ι3 through which the chain shaft 14 passes, and a self-shaft bore 113 to the other side The protruding portion 114 protrudes from the chain u, and the connecting portion 112 has a contour surface 丨丨5 which is located at the upper and lower portions and is connected to the center of the inner chain piece 11 by a curved line ,3, and has a contour surface 丨丨5 A hole defining a lightening hole 10 surrounds the face 15. Wherein the hole surrounding surface 15 comprises: two first arc segments 151 respectively adjacent to the pivot hole 113, and two second arc segments 152 connected between the first arc segments 151, the first arc segment 151 Each of the centers 154 is adjacent to a center 153 and has a reference point 154 adjacent to the pivot hole 113 and located on the center line 13 and two end points 155 connected to the second arc 152. The outer link 12 also has two end portions 121 and a connecting portion 122 connected between the end portions 121, which is perpendicular to the center line 13 and passes through the reference line Μ0 of the reference point 154, and the engaging portion 122 is connected to the end portion 121. There is also a weight reducing hole 123. Since the shape of the weight reducing hole 123 is the same as that of the weight reducing hole 1 of the inner chain piece n, it will not be described. The chain shafts 14 are the shaft base portions 141 including the segment-corresponding links n and 12, and the rivet portions 142 at the opposite ends of the shaft base portion 141 and projecting from the outer chain piece 12, at the shaft base portion 141 and the rivet A plurality of hollow passages 143 are defined between the joints 142, wherein the thickness of the rivet portions 142 is the same as the shaft base 142. When an external force is applied to the lap joint 142 of the chain shaft 14, the aforementioned rivet portion 142 will diffuse toward the periphery to form a rivet flange 144. That is, in the unsnapped state, the chain shaft 14 has two lap joints of the same thickness, and after the staking, the staking portions 142 expand outward to form a rivet flange 144. Although the conventional chain can reduce the overall weight of the chain by reducing the weight of the inner and outer chain sheets „, 12, but reducing the weight =:=. In the design of the chain shaft 14, Because of the axis of the chain " 卩 141 and the riveting part 丨 142 l; degree, therefore, when the riveting part / / 扩展 扩展 expand to form the riveting flange 144, it is easy to make the R4 It is skewed and cannot spread evenly. “K-edge quality is unstable. Second, 43 weeks, causing riveting [Summary of the Invention] In the case of the main object of the present invention, the present invention can reduce the weight-reducing chain without affecting the structural strength. Today's slave weight combination unit consists of two pieces: several serial units, each one-key piece, rainy y-string connected to the chain of the adjacent chain, to the second piece of the piece' and two eves/ The first one of the first links has two left and right intervals and each has an end portion for pivoting the shaft through which the chain shaft passes, an engaging portion between the ends, and a pivot hole passing through the shafts. The center line of a center and the two perpendicular lines that pass through the center of the circle and are perpendicular to the line. The engaging portion has a hole surrounding surface defining a weight reducing hole, the hole surrounding surface comprising two first segments respectively adjacent to the pivot hole, and two second segments engaging the first segments, each Each of the first segments has a reference point on the circle ''line" and two end points on the opposite side of the line connection, and the first chain has two more passes through the reference point and A vertical line perpendicular to the center line of the line, and the end points are not more than the reference vertical line between the adjacent center line and the reference vertical line. The beneficial effect of the present invention is that by changing the shape of the weight reducing hole, The area of the weight reducing hole is enlarged without the strength of the chain structure, so as to further reduce the weight of the chain. [Embodiment] The foregoing and other technical contents, features and effects of the present invention are combined with the following reference drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S) DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S) DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION Before the present invention is described in detail, it is noted that in the following description, like elements are Referring to Figures 3, 4 and 5, a first preferred embodiment of the chain of the present invention comprises: a plurality of concatenating units 3 arranged in a left and right direction. Each of the concatex units 3 comprises: two first and second parallel strips 4 inside and outside. Two chain members 3 1 which are rotatable between the first chain pieces 4, two second chain pieces 6 which are respectively located outside the first side chain piece 4 on the same side and partially re-entered, and two strings The key shafts 5 of the adjacent first and second chain pieces 4, 6 are connected to each other. The first chain pieces 4 each have two left and right spaced end portions 41, and an engaging portion 42 positioned between the end portions 41. Each end portion 41 has an end center 411, an end rim surface 412 surrounding the end center 411, a shaft bore 413, and a first pivot from the circumference of the shaft pivot 413 to the other 4 protruding studs 414. The first chain piece 4 further has a center line 43 connecting the end centers 411, and two centered vertical lines 44 perpendicular to the center line 43 and passing through the end center 411. And two chamfers 40 disposed on the inner side surface and spanning the end portion 41 and the engaging portion 42. The engaging portion 42 has two joints between the end contour faces 4丨2 The connecting contour surface 421, and a hole surrounding surface 45 defining a weight reducing hole 422, in the present embodiment, the #接轮轮面面 421 is concavely curved toward the central arc, and the weight reducing hole 422 is symmetrical. Positioned on the opposite side of the center line 43, the hole surrounding surface 45 includes: two first segments 451 adjacent to adjacent pivot holes 413, and two second portions above and below the first segment 451 Section 452' wherein the first segment 451 is concavely curved and surrounds the adjacent end center 411, has a reference point 453 that falls on the center line 43, and two are located on opposite sides of the center line 43 _ 454, and the first link 4 further has two reference lines 46 respectively passing through the reference point 453 and perpendicular to the center line 43, and the end points 4m are between the adjacent reference vertical line 46 and the center line 44 . The second segment of the embodiment is connected between the end points 454 of the first segment 451 and curved along the curved line connecting the contour faces 421. The chain rollers 31 are rotatably sleeved between the corresponding studs 414 of the first link 4. Referring to Figures 3, 5 and 6, the second chain piece 6 of the present embodiment has two left and right spaced end portions .61, and an engaging portion 62 positioned between the end portions 61. The female end portions 61 have a shaft pivot hole 611 through which the chain shaft 5 passes, and the engaging portion 62 has an inner side surface 621 facing the first chain piece 4, an outer side surface 622, a through inner and outer side surfaces 621, 622 and defining a reduction The hole of the heavy hole 623 surrounds the surface 63, and the two concave arc connection between the inner and outer side surfaces 62 i 622 is 62 〇, and the shape and structure of the weight reducing hole and the hole surrounding surface 63 are the same as the first chain 4 The same, no longer described, and the hole surrounding surface 63 also has two curved first segments 631 and two curved second segments 632. The pitch P between the centers of the two pivot holes 6 ι of the second chain piece 6 of the present embodiment is assumed to be 12·7. The first segment 63 1 of the weight reducing hole 623 of this embodiment is a pivot hole 6丨. The center of i is a curved arc of a center, and the radius thereof is preferably .2.7 to 3.3 coffee. Therefore, the shortest distance between the hole surrounding surface 63 of the second chain piece 6 and the adjacent pivot hole 611 of the second chain piece 6 of this embodiment Jia Wei is preferably 0.9 1.5 mm, and the shortest distance W2 between the hole surrounding surface 63 and the connecting contour surface 62 is preferably 1 > 4 to 2.0 mm. In order to design a chain of various sizes, it is possible to derive Wl/P=0.07~0.12 according to the above size, which is a preferred scale design. Further, the shortest distance between the hole surrounding surface 45 of the first chain piece 4 of the first chain piece 4 and the pivot hole 413 and the connecting contour surface 421 is also the same as that of the second chain piece 6, and will not be described again. The inner side surface 621 of the engaging portion 62 further has two first concave edges 625 ′ in a diagonal position, two first concave edges 626 adjacent to the first concave edge 625 and having a shallow depth, and two edges The leading edge is disposed at an edge and spans the guiding slope 627 of the first and second concave edges 625, 626, and the outer side surface 622 has two first Φ secrets corresponding to the first concave edge 625, a large edge 628, and two corresponding numbers The second flange 629 of the two concave edge 626, the flute-empty, the greater edge 628 is greater than the second flange 629. The chain shaft 5 of the embodiment includes a 14-line setting of m and a shaft base portion 51 between the second key sheets 6, and two rivet portions 52 located at opposite ends of the shaft base portion 51 and protruding from the second chain piece 6, defining an axis between the shaft base portion 51 and the Nahe portion 52 To the hollow passage 53, wherein the shaft base η has an inner annular surface 511' and an outer annular surface 5' which is equidistant from the inner annular surface 511, and the staking portion 52 has a - segment and an outer annular surface 512. Outside the straight line connection: the dog face 521, a section. The outer end surface 522 extending from the outer ring protrusion surface 521 to the central axis, and an outer end surface 522 to the inner ring surface 5 ι Stretching and defining a riveted slope 523 facing the missing ring 52〇 of the hollow passage 53, the width of the missing ring is greater than or equal to 〇.2mme, the garment is referred to Figures 3, 4, and 7, and the embodiment is - The design concept of the chain 4 is to make the hole 422 sigh along the arc of the connecting contour surface 421 and the pivot hole 413, that is, the portion marked with a diagonal line in FIG. 7, and the conventional inner chain shown in FIGS. The heavy hole 1〇 is usually not very large, but if the maximum is cut, since the design of the convex arc is used, that is, if the weight reducing hole 1G of the conventional inner key U as shown in _7 is added to the maximum, And assuming that the weight-reducing area of the weight-reducing hole 10 of the convex arc is '', the weight-reducing area of the convex-concave arc of the present invention can be as close as 12', that is, the weight-reducing part of the slanted line in FIG. Area: 〇·2' Since the four corners of the weight reducing hole 422 of the present embodiment adopt an acute angle - there is a problem of stress concentration, the present embodiment forms an arc circle at each of the four corners of the weight reducing hole 422. Thereby, the above problem is improved. The above-mentioned weight reducing hole 422 1323321 has four reaming areas 423 as compared with the conventional inner chain piece 11 of FIG. The first and second chain pieces 4, 6 of the invention have less weight than the conventional ones, and the reaming areas 423 are located at the portion of the "thickness of the chain 4" without affecting the first chain piece. The structural strength of 4, so the design of the present invention can achieve the purpose of further weight reduction without affecting the structural strength. Further, in the embodiment of the present invention, the design of the chain shaft 5 mainly forms a loop 52 〇 on the rivet portion 52 of the chain shaft 5, and the rivet slope 523 can be subjected to the riveting process when the chain shaft 5 is received. The rivet portion 52 is diffused to the outer circumference of the outer circumference. Therefore, the chain shaft 5 of the embodiment can make the chain shaft 5 more uniform after riveting without affecting the joint strength, so that the splicing = quality more stable. According to the actual test by the inventors, the visibility W3 of the present invention is less than or equal to 〇2 mm, that is, the effect of uniform deformation is particularly illustrated by the fact that the first link 4 defined in the first embodiment of the present invention is : The commonly known inner chain piece, the second chain piece 6 is a commonly known outer chain piece, and the second and second chain pieces 4, 6 are defined for convenience of explanation, and the μ can be reversed in design 'ie, The chain piece 4 may also be an outer chain piece, and may be an inner chain piece. Further, the present invention is not necessary to simultaneously provide the weight reducing holes h on the second link 4' 6 to reduce the weight holes 422, 623, that is, as long as the weight reducing holes are provided on one of the links 4, 6 of 1. 422 Eight expected effects. That is, the construction of the second preferred embodiment of the chain of the present invention is the same as that of the first embodiment, and the difference from the first embodiment is that the construction of the first and second sheets 4'6 is as follows. The second chain - the second item of the second 11 1323321 embodiment also includes two spaced end portions 6 and - the connecting portion 仏 each end portion 61 also has a pivot hole And the connecting portion 62 also has two engaging contour faces (4) located above and below, and a hole surrounding surface 63' between the connecting contour faces 62 and defining a weight reducing hole (2) The surrounding surface 63 also has two first segments 631, and two 632 'the above-mentioned first segments 631 are centered by the center of the pivot hole. The fox is curved. The feature of this embodiment is that the articulated contours are
及第二段632皆為平行於圓心連線43的直^惟在設計上 ’本發明之第二段632只要是直線即可，但第一段631也 可以是直線狀（容後說明）其_第二段632也不以平行於圓心 連線43為必要。 參閱圖9’本發明鏈條之第三較佳實施例亦和第一較佳 實施例類似，不同者僅為第一及第二鏈片4、6之孔圍繞面 45、63的構造’圖9舉第-鏈片4為例，即該第一鏈片4 之孔圍繞面45亦包括兩個第—段451，以及兩個第二段And the second segment 632 is parallel to the center line 43. The second segment 632 of the present invention may be a straight line, but the first segment 631 may also be linear (described later). The second segment 632 is also not necessary to be parallel to the center line 43. Referring to Fig. 9', the third preferred embodiment of the chain of the present invention is similar to the first preferred embodiment, except that the configuration of the aperture surrounding faces 45, 63 of the first and second links 4, 6 is 'Fig. 9 Taking the first link 4 as an example, the hole surrounding surface 45 of the first chain 4 also includes two first segments 451 and two second segments.
:52’上述第一段451係和基準垂線46重疊之直線，但在 叹-十上’ δ玄等第-段451只是是直線即可，並不以和基準 垂線46重疊為必要。 參閱圖10、11，本發明鍵條之第四較佳實施例亦包含 數個串接單元3’每個争接單元都包括有第一鏈片4、第二 鏈片6,以及串接第—及第二鏈片4、6的鏈轴5。本實施 例與第一實施例的差別在於：第— 罘及弟一鏈片4、6具有相 同的構造，以第一鏈片4作芎日日—哲 作說明，該弟—鏈片4具有兩個 端部41 ’以及一位在該耸迪邱^丨日日 牡邊寻糙。Ρ 41間的銜接部42，上述端 12 部41具有向度差，故該銜接部42是由其中—個端部μ往 另個端部41傾斜’在該銜接部42上同樣具有—個界定 出―減重孔422的孔圍繞面45，此減重孔422的形狀與 一實施例相同，不再贅述。: 52' The first segment 451 is a straight line that overlaps with the reference vertical line 46. However, the first segment 451 such as the singular-supplemental squad is only a straight line, and is not necessarily overlapped with the reference perpendicular 46. Referring to Figures 10 and 11, the fourth preferred embodiment of the key strip of the present invention also includes a plurality of tandem units 3' each of which includes a first link 4, a second link 6, and a serial connection. - and the chain shaft 5 of the second chain pieces 4, 6. The difference between this embodiment and the first embodiment is that the first and second strands 4 and 6 have the same structure, and the first chain piece 4 is used as a description of the Japanese-Japanese genius. The two ends 41' and one of them are rough in the sacred day. The connecting portion 42 of the 41, the end portion 12 has a difference in orientation, so the engaging portion 42 is inclined by the end portion μ to the other end portion 41, and the same is defined on the engaging portion 42. The hole of the weight reducing hole 422 surrounds the surface 45. The shape of the weight reducing hole 422 is the same as that of an embodiment, and will not be described again.
惟以上所述者，僅為本發明之較佳實施例而已，當不 :以此限定本發明實施之範圍，即大凡依本發明申請：利 範圍及發明說明内容所作之簡單的等效變化與修飾皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 .圆1是-種習知可減輕重量之鏈條的局部剖視分解圖 圖 圖 圖 2是該習知鏈條之一内鏈片的内側視圖； 3是本發明鏈條之第_較佳實_的局部剖視分解However, the above is only the preferred embodiment of the present invention, and does not: limit the scope of the practice of the present invention, that is, the simple equivalent change between the scope of the invention and the description of the invention Modifications are still within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 2 is a partial cross-sectional exploded view of a conventional weight-reducing chain. FIG. 2 is an inner side view of one of the conventional chain; 3 is the chain of the present invention. Partial cross-sectional decomposition of _best real_
圖4是一内側視圖，單獨顯示該第一較佳實施例之一 第—鏈片； 鏈片； 圖5是一立體圖，單獨顯示 該第一較佳實施例之一第 -鏈2 6是該第一較佳實施例的内側視圖，單獨顯示該第 圖7是比對圖’主要顯示該第一較佳實施例之第一 鍵片與習知鏈片之減重關係； 圖8是-類似圖4的視圖，顯示本發明鍵條之第二較 佳貫施例； 13 1323321 圖9是一類似圖4的視圖，顯示本發明鏈條之第三較 佳實施例； 圖10是本發明鏈條之第四較佳實施例的未完整組合剖 視圖；及 圖11是一立體圖，單獨顯示該第四較佳實施例的第一 鏈片。 14 1323321 【主要元件符號說明】Figure 4 is an inside side view showing the first link of the first preferred embodiment; the link; Figure 5 is a perspective view showing the first link of the first preferred embodiment. The inner side view of the first preferred embodiment is shown separately. FIG. 7 is a comparison diagram showing the weight reduction relationship between the first key sheet and the conventional chain of the first preferred embodiment; FIG. 8 is similar to FIG. 4. A view showing a second preferred embodiment of the present invention; 13 1323321 Figure 9 is a view similar to Figure 4 showing a third preferred embodiment of the chain of the present invention; Figure 10 is a fourth embodiment of the chain of the present invention A cross-sectional view of a preferred embodiment of the preferred embodiment; and FIG. 11 is a perspective view showing the first link of the fourth preferred embodiment separately. 14 1323321 [Description of main component symbols]
3 串接單元 51 軸基部 31 鏈親 511 内環面 4 第一鏈片 512 外環面 40 倒角 52 鉚合部 41 端部 520 缺環 411 端部圓心 521 外環突面 412 端部輪廓面 522 外端面 413 軸柩孔 523 鉚合斜面 414 突柱 53 中空道 42 銜接部 6 第二鏈片 421 銜接輪廊面 61 端部 422 減重子匕 611 轴框孔 423 擴孔區域 62 銜接部 43 囱心連線 620 銜接輪廟面 44 圓心垂線 621 内側面 45 孔圍繞面 622 外側面 451 第一段 623 減重孔 452 第二段 625 第一凹緣 453 基準點 626 第二凹緣 454 端點 627 導斜面 46 基準垂線 628 第一突緣 5 鏈轴 629 第二突緣 15 1323321 63 孔圍繞面 631第一段 632第二段3 splicing unit 51 shaft base 31 chain 511 inner ring surface 4 first chain piece 512 outer ring surface 40 chamfer 52 rivet portion 41 end portion 520 missing ring 411 end center 521 outer ring protrusion surface 412 end contour surface 522 Outer end face 413 Shaft bore 523 Riveted ramp 414 Pillar 53 Hollow duct 42 Engagement section 6 Second link 421 Engagement of the raceway 61 End 422 Weight loss 匕 611 Shaft frame hole 423 Reaming area 62 Engagement section 43 Heart connection 620 Connection wheel temple 44 Center line 621 Inner side 45 Hole surrounding surface 622 Outer side 451 First section 623 Weight loss hole 452 Second section 625 First concave edge 453 Reference point 626 Second concave edge 454 End point 627 Guide slope 46 reference vertical line 628 first flange 5 chain shaft 629 second flange 15 1323321 63 hole surrounding surface 631 first segment 632 second segment