TWM448686U - Chain wear indicator for bicycle - Google Patents
Chain wear indicator for bicycle Download PDFInfo
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- TWM448686U TWM448686U TW101216339U TW101216339U TWM448686U TW M448686 U TWM448686 U TW M448686U TW 101216339 U TW101216339 U TW 101216339U TW 101216339 U TW101216339 U TW 101216339U TW M448686 U TWM448686 U TW M448686U
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- wear indicator
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G13/00—Chains
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Description
本創作係有關一種使用於判斷自行車之鏈條的更換時期之用於自行車之鏈條磨耗指示器。This creation relates to a chain wear indicator for a bicycle that is used to determine the replacement period of a bicycle chain.
自行車之滾子鏈條(以下僅稱為鏈條)係隨著使用而會磨耗且其全長會伸長。鏈條伸長時，會有鏈條在齒輪(gear)或鏈輪(sprocket)上滑動而沒有嚙合之現象產生。為了防止此現象，而藉由鏈條磨耗指示器來判斷更換鏈條是否到來。A bicycle roller chain (hereinafter simply referred to as a chain) is worn as it is used and its entire length is elongated. When the chain is extended, there is a phenomenon that the chain slides on a gear or a sprocket without meshing. In order to prevent this, the chain wear indicator is used to determine whether the replacement chain is coming.
日本特開2000-120803號公報所揭示之習知鏈條磨耗指示器係具有插入於三個鏈條鏈節之三個凸出部。於測量鏈條時，該三個凸出部之中，位在一方端部之第一凸出部與位在中央部之第二凸出部，係產生力量將各鏈條鏈節中的滾子朝相反方向推抵。而位在另一方端部之第三凸出部係於與第二凸出部相同方向產生推抵滾子之力。藉此，在第二凸出部與第三凸出部之間可正確的測量鏈條之伸長程度。The conventional chain wear indicator disclosed in Japanese Laid-Open Patent Publication No. 2000-120803 has three projections inserted into three chain links. In the measurement of the chain, among the three protrusions, the first protrusion located at one end and the second protrusion located at the center portion generate force to push the rollers in each chain link toward The opposite direction is pushed. The third projection located at the other end is configured to generate a force against the roller in the same direction as the second projection. Thereby, the degree of elongation of the chain can be correctly measured between the second projection and the third projection.
然而，上述習知技術中，由於必須將鏈條鏈節插入三個凸出部，因此有工作效率差之問題。再者，必須將鏈條磨耗指示器大型化，因此亦有製造成本變高之問題。However, in the above-mentioned conventional technique, since the chain link has to be inserted into the three projections, there is a problem that work efficiency is poor. Furthermore, since the chain wear indicator must be enlarged, there is also a problem that the manufacturing cost becomes high.
本創作係有鑒於上述課題，其目的在於提供一種工作性能高，且可以低成本製造之用於自行車之鏈條磨耗指示器。In view of the above problems, the present invention aims to provide a chain wear indicator for bicycles which has high work performance and can be manufactured at low cost.
用以解決上述課題之用於自行車之鏈條磨耗指示器係具備：本體部；第一凸出部，自本體部延伸；以及第二凸出部， 在與第一凸出部僅離開第一預定距離之位置，自本體部延伸。第一凸出部係具有：第一接觸面，推壓接觸於用於自行車之鏈條之複數的鏈條鏈節中，第一鏈條鏈節中的一方滾子；以及第二接觸面，推壓接觸於第一鏈條鏈節中的另一方滾子。第二凸出部係具有第三接觸面，接觸於與第一鏈條鏈節不同的第二鏈條鏈節的滾子。A chain wear indicator for a bicycle for solving the above problems includes: a body portion; a first protruding portion extending from the body portion; and a second protruding portion, Extending from the body portion at a position that is only a first predetermined distance away from the first projection. The first protruding portion has a first contact surface that is pressed into contact with a plurality of chain links for the bicycle chain, one of the first chain links; and a second contact surface that pushes the contact The other roller in the first chain link. The second projection has a third contact surface that contacts the roller of the second chain link different from the first chain link.
根據本用於自行車之鏈條磨耗指示器，將第一凸出部之第一接觸面與第二接觸面分別所接觸之滾子朝互相反方向推壓。而且，第二凸出部之第三接觸面係於與第一凸出部之第二接觸面相同方向產生推抵滾子之力。藉此，在第一凸出部之第二接觸面與第二凸出部之第三接觸面之間，第一凸出部之第二接觸面推抵滾子之方向，與第二凸出部之第三接觸面推抵滾子之方向形成相同，而可正確的測量鏈條之伸長程度。再者，第一接觸面與第二接觸面插入相同的鏈條鏈節中的兩個滾子間。因而，固定鏈條之工作可一次即完成，因此工作效率提高。又，可將鏈條磨耗指示器小型化，因此可減低製造成本。According to the chain wear indicator for bicycles, the rollers that are in contact with the first contact surface and the second contact surface of the first projection are urged in opposite directions from each other. Further, the third contact surface of the second projection is formed to generate a force against the roller in the same direction as the second contact surface of the first projection. Thereby, between the second contact surface of the first protruding portion and the third contact surface of the second protruding portion, the second contact surface of the first protruding portion pushes against the direction of the roller, and the second protruding portion The third contact surface of the portion is formed in the same direction as the roller, and the elongation of the chain can be correctly measured. Furthermore, the first contact surface and the second contact surface are interposed between the two rollers in the same chain link. Therefore, the work of fixing the chain can be completed at one time, so the work efficiency is improved. Moreover, the chain wear indicator can be miniaturized, so that the manufacturing cost can be reduced.
第一凸出部係可具備形成有第一接觸面之第一延伸部；以及與第一延伸部僅離開第二預定距離，且形成有第二接觸面之第二延伸部。較佳是第一延伸部與第二延伸部係為可彈性的接近或離開。The first protruding portion may have a first extending portion formed with the first contact surface; and a second extending portion that is separated from the first extending portion by a second predetermined distance and formed with the second contact surface. Preferably, the first extension and the second extension are resiliently accessible or apart.
藉此，藉由第一凸出部之第一延伸部與第二延伸部推抵兩側的滾子，可將第一凸出部固定於第一鏈條鏈節。再者，一旦將第一凸出部固定於第一鏈條鏈節，使用者不須用手推抵以使第一凸出部不會自第一鏈條鏈節鬆脫，而可檢查第二鏈條鏈節之滾子間是否可插入第二凸出部。其結果，可提高工作效率。Thereby, the first protruding portion can be fixed to the first chain link by the first extending portion of the first protruding portion and the second extending portion pushing the rollers on both sides. Furthermore, once the first protruding portion is fixed to the first chain link, the user does not need to push it by hand so that the first protruding portion does not loosen from the first chain link, and the second chain can be inspected. Whether the second projection can be inserted between the rollers of the link. As a result, work efficiency can be improved.
第二延伸部係可位在該第一延伸部與該第二凸出部之間。The second extension portion is positionable between the first extension portion and the second protrusion portion.
藉此，在第一凸出部之第二延伸部與第二凸出部之間，第一凸出部之第二延伸部推抵滾子之方向與第二凸出部推抵滾子之方向形成相同，可正確的測量鏈條之伸長。Thereby, between the second extending portion and the second protruding portion of the first protruding portion, the second extending portion of the first protruding portion pushes against the direction of the roller and the second protruding portion pushes against the roller The directions are the same and the chain elongation can be measured correctly.
第二預定距離係可為0.5mm以上。較佳是該第二預定距 離係為0.85mm以上。The second predetermined distance may be 0.5 mm or more. Preferably, the second predetermined distance The separation is 0.85 mm or more.
藉此，可將第一凸出部插入第一鏈條鏈節而可確實固定。Thereby, the first protruding portion can be inserted into the first chain link and can be surely fixed.
第一延伸部最好具有遠側端與近側端及彎曲部。The first extension preferably has a distal end and a proximal end and a curved portion.
藉此，第一延伸部之彈性將變大。Thereby, the elasticity of the first extension portion becomes large.
第一延伸部最好形成L形。The first extension preferably forms an L shape.
藉此，第一延伸部之彈性將變大，並且第一延伸部之剛性變高。Thereby, the elasticity of the first extension portion becomes large, and the rigidity of the first extension portion becomes high.
第一延伸部在近側端之寬度最好比第一延伸部在彎曲部之寬度大。較佳是第一延伸部係自近側端到彎曲部形成為錐形。Preferably, the width of the first extension at the proximal end is greater than the width of the first extension at the bend. Preferably, the first extension is formed in a tapered shape from the proximal end to the curved portion.
藉此，第一延伸部之近側端之剛性將變高。Thereby, the rigidity of the proximal end of the first extension portion will become high.
第一預定距離最好相當於預定鏈條鏈節數。較佳為預定鏈條鏈節數為10以上。或者，預定鏈條鏈節數最好選自8、10、12之中。The first predetermined distance preferably corresponds to the predetermined number of chain links. Preferably, the number of predetermined chain links is 10 or more. Alternatively, the number of predetermined chain links is preferably selected from among 8, 10, 12.
藉此，使用者係可精確的測量鏈條之伸長程度。Thereby, the user can accurately measure the degree of elongation of the chain.
第一延伸部係最好在該遠側端具有凸形滾子嚙合部。Preferably, the first extension has a convex roller engagement portion at the distal end.
藉此，使用者係容易將第一延伸部與第二延伸部固定於第一鏈條鏈節。Thereby, the user can easily fix the first extension portion and the second extension portion to the first chain link.
第一延伸部具有第一曲率部，第一曲率部之曲率半徑最好為1.0mm以上。較佳是第一曲率部之曲率半徑為4.0mm以上。The first extending portion has a first curvature portion, and the first curvature portion preferably has a radius of curvature of 1.0 mm or more. Preferably, the radius of curvature of the first curvature portion is 4.0 mm or more.
藉此，在第一鏈條鏈節的兩個滾子間插入第一凸出部之際，滾子推抵第一延伸部之力之中，與插入方向垂直的方向之力成份將會變大。其結果，第一延伸部與第二延伸部間之距離容易因彈性而縮小，且容易在第一鏈條鏈節的兩個滾子間插入第一凸出部。Thereby, when the first projection is inserted between the two rollers of the first chain link, the force of the roller is pushed into the first extension, and the force component in the direction perpendicular to the insertion direction becomes larger. . As a result, the distance between the first extension portion and the second extension portion is easily reduced by elasticity, and it is easy to insert the first projection portion between the two rollers of the first chain link.
第二延伸部具有第二曲率部，第二曲率部之曲率半徑最好為3.0mm以下。較佳是第二曲率部之曲率半徑為2.5mm以下。更佳是第二曲率部之曲率半徑為1.0mm以下。The second extending portion has a second curvature portion, and the second curvature portion preferably has a radius of curvature of 3.0 mm or less. Preferably, the curvature radius of the second curvature portion is 2.5 mm or less. More preferably, the radius of curvature of the second curvature portion is 1.0 mm or less.
藉此，在第二鏈條鏈節的兩個滾子間插入第二凸出部之際，滾子推抵第一延伸部之力之中，與插入方向垂直的方向之 力成份將會變小。其結果，第一延伸部與第二延伸部間之距離不易因彈性而縮小，且不易在第二鏈條鏈節的兩個滾子間插入第二凸出部。藉此，使用者係可正確測量鏈條之更換時期是否到來。Thereby, when the second protrusion is inserted between the two rollers of the second chain link, the roller is pushed into the force of the first extension, and is perpendicular to the insertion direction. The force component will be smaller. As a result, the distance between the first extending portion and the second extending portion is less likely to be reduced by elasticity, and it is difficult to insert the second protruding portion between the two rollers of the second chain link. Thereby, the user can correctly measure whether the replacement period of the chain comes.
根據本創作，可提供一種工作性能高且可以低成本製造之用於自行車之鏈條磨耗指示器。According to the present invention, a chain wear indicator for a bicycle that is high in performance and can be manufactured at low cost can be provided.
採用本創作之一實施形態之用於自行車之鏈條磨耗指示器1，係為由具有如不銹鋼之剛性的物質構成之平板狀構件。以下參照第一圖至第六圖來說明本創作之用於自行車之鏈條磨耗指示器1之構造。用於自行車之鏈條磨耗指示器1係具備本體部10、第一凸出部20、以及第二凸出部30。第一凸出部20係自本體部10延伸。第二凸出部30係於與第一凸出部20離開第一預定距離L之位置而自本體部10延伸。The chain wear indicator 1 for a bicycle according to an embodiment of the present invention is a flat member made of a material having rigidity such as stainless steel. The configuration of the bicycle chain wear indicator 1 for bicycles of the present invention will be described below with reference to the first to sixth figures. The chain wear indicator 1 for a bicycle includes a main body portion 10, a first protruding portion 20, and a second protruding portion 30. The first projection 20 extends from the body portion 10. The second protruding portion 30 extends from the body portion 10 at a position away from the first protruding portion 20 by a first predetermined distance L.
第一預定距離L係為因應預定鏈條鏈節數之距離。滾子鏈條中，內側鏈節與外側鏈節係以交錯方式相連接。因而，最好將內側鏈節彼此或外側鏈節彼此插入第一凸出部20、第二凸出部30，以期正確地測量鏈條之伸長程度。為此，預定鏈條鏈節數最好為偶數。再者，為確保測量鏈條之伸長程度時之精確度，鏈節數係越多越好。因此，預定鏈條鏈節數係較佳為10以上。The first predetermined distance L is the distance corresponding to the number of predetermined chain links. In the roller chain, the inner link and the outer link are connected in a staggered manner. Therefore, it is preferable that the inner link portions or the outer link portions are inserted into each other with the first projecting portion 20 and the second projecting portion 30 in order to accurately measure the degree of elongation of the chain. For this reason, the number of predetermined chain links is preferably an even number. Furthermore, in order to ensure the accuracy of measuring the elongation of the chain, the number of links is as large as possible. Therefore, the predetermined number of chain links is preferably 10 or more.
另一方面，預定鏈條鏈節數變多時，必須將用於自行車之鏈條磨耗指示器1之長度加長。然而，用於自行車之鏈條磨耗指示器1太長的話，會有工作效率降低，且製造成本變高之問題。從如上述之觀點來看，預定鏈條鏈節數係最好選自8、10、12之中。On the other hand, when the number of predetermined chain links is increased, the length of the chain wear indicator 1 for bicycles must be lengthened. However, if the chain wear indicator 1 for a bicycle is too long, there is a problem that the work efficiency is lowered and the manufacturing cost becomes high. From the viewpoint of the above, the predetermined number of chain links is preferably selected from among 8, 10, and 12.
第一凸出部20具備第一接觸面20a、第二接觸面20b。第一接觸面20a係推壓接觸於用於自行車之鏈條之複數的鏈條鏈節中，第一鏈條鏈節2中的一方之滾子2a。同樣的，第二接觸面20b係推壓接觸於第一鏈條鏈節2中的另一方之滾子2b。The first protruding portion 20 includes a first contact surface 20a and a second contact surface 20b. The first contact surface 20a is pressed against the roller 2a of one of the first chain links 2 in the plurality of chain links for the bicycle chain. Similarly, the second contact surface 20b is urged to contact the other roller 2b of the first chain link 2.
第二凸出部30係具備第三接觸面30a。第三接觸面30a係接觸於與第一鏈條鏈節2不同之第二鏈條鏈節3之滾子3b(參照第六圖)。第二鏈條鏈節3係與第一鏈條鏈節2僅離開預定鏈條鏈節數。由於預定鏈條鏈節數為偶數，因此第一鏈條鏈節2與第二鏈條鏈節3係皆為內側鏈節或皆為外側鏈節。The second protruding portion 30 is provided with a third contact surface 30a. The third contact surface 30a is in contact with the roller 3b of the second chain link 3 different from the first chain link 2 (refer to the sixth drawing). The second chain link 3 is separated from the first chain link 2 by a predetermined number of chain links. Since the predetermined number of chain links is an even number, the first chain link 2 and the second chain link 3 are both inner links or outer links.
第一凸出部20係具備第一延伸部21、第二延伸部29。在第一延伸部21形成有第一接觸面20a。在第二延伸部29形成有第二接觸部20b。第二延伸部29係位在第一延伸部21與第二凸出部30之間。The first protruding portion 20 includes a first extending portion 21 and a second extending portion 29 . A first contact surface 20a is formed in the first extension portion 21. A second contact portion 20b is formed in the second extension portion 29. The second extension portion 29 is positioned between the first extension portion 21 and the second protrusion portion 30.
第二延伸部29係與第一延伸部21僅離開第二預定距離D。第二預定距離D係較佳為0.5mm以上，更佳是為0.85mm以上。第二預定距離D太小的話，透過第一延伸部21與第二延伸部29之間之彈性，而無法於第一凸出部20插入第一鏈條鏈節2並確實加以固定。The second extension 29 is separated from the first extension 21 by a second predetermined distance D. The second predetermined distance D is preferably 0.5 mm or more, and more preferably 0.85 mm or more. When the second predetermined distance D is too small, the elasticity between the first extending portion 21 and the second extending portion 29 is transmitted, and the first chain link 2 cannot be inserted into the first protruding portion 20 and is surely fixed.
第一延伸部21係具有遠側端22與近側端24及彎曲部23。近側端24係為最接近本體部10之第一延伸部21之部份。遠側端22係為距本體部10最遠之第一延伸部21之部份。彎曲部23係位在遠側端22與近側端24之間。第一延伸部21係於彎曲部23形成與第二延伸部29平行之方式彎曲。藉由具有如上述之形狀，將第一凸出部20插入第一鏈條鏈節2之際，第一延伸部21彎曲成使遠側端22移動於第二延伸部29之方向。因而，第一延伸部21與第二延伸部29係可彈性的接近或離開。The first extension 21 has a distal end 22 and a proximal end 24 and a curved portion 23. The proximal end 24 is the portion that is closest to the first extension 21 of the body portion 10. The distal end 22 is part of the first extension 21 that is furthest from the body portion 10. The curved portion 23 is positioned between the distal end 22 and the proximal end 24. The first extension portion 21 is curved in such a manner that the curved portion 23 is formed in parallel with the second extension portion 29. When the first projection 20 is inserted into the first chain link 2 by having the shape as described above, the first extension 21 is curved to move the distal end 22 in the direction of the second extension 29. Thus, the first extension portion 21 and the second extension portion 29 are elastically close to or away from each other.
如第一圖所示，第一延伸部21最好形成為L形。再者，第一延伸部21在近側端24之寬度W1 係最好比第一延伸部21 在彎曲部23之寬度W2 要大。更佳是第一延伸部21係自近側端24至彎曲部23形成為錐形。藉此，於第一鏈條鏈節2反覆插入第一凸出部20之情況，可防止自彎曲部23至近側端24之部份產生塑性變形。As shown in the first figure, the first extension portion 21 is preferably formed in an L shape. Further, the first extending portion 21 at a proximal end of a line width W 24 is preferably longer than the first extending portion 21 at the bent portion 23 of a width W 2 larger. More preferably, the first extension portion 21 is formed in a tapered shape from the proximal end 24 to the curved portion 23. Thereby, in the case where the first chain link 2 is repeatedly inserted into the first projecting portion 20, plastic deformation from the portion of the bent portion 23 to the proximal end 24 can be prevented.
如第二圖所示，第一延伸部21係於遠側端22具有第一曲率部25、凸形滾子嚙合部26。第一曲率部25之曲率半徑Ra係較佳為1.0mm以上，更佳為4.0mm以上。如第四圖所示，使曲率半徑Ra越大的話，於第一鏈條鏈節2插入第一凸出部20之際，滾子2a推抵第一延伸部21之力之中，相對於與插入方向垂直的方向之力成份F1 ，平行於插入方向且作為反作用力之力成份P1 將變小。其結果，第一延伸部21彎曲成使遠側端22移動於第二延伸部29之方向，而容易將第一凸出部20插入第一鏈條鏈節2。As shown in the second figure, the first extension 21 has a first curvature portion 25 and a convex roller engagement portion 26 at the distal end 22. The radius of curvature Ra of the first curvature portion 25 is preferably 1.0 mm or more, and more preferably 4.0 mm or more. As shown in the fourth figure, when the radius of curvature Ra is larger, when the first chain link 2 is inserted into the first projecting portion 20, the roller 2a pushes against the force of the first extending portion 21, as opposed to The force component F 1 in the direction perpendicular to the insertion direction is parallel to the insertion direction and the force component P 1 as a reaction force will become smaller. As a result, the first extension portion 21 is bent to move the distal end 22 in the direction of the second extension portion 29, and the first projection portion 20 is easily inserted into the first chain link 2 .
如第三圖所示，凸形滾子嚙合部26係在第一鏈條鏈節2插入第一延伸部21後，與滾子2a嚙合。藉此，一旦將第一鏈條鏈節2固定後，使用者即使不用手推抵第一凸出部20與第一鏈條鏈節2，也能檢查第二凸出部30是否可插入第二鏈條鏈節3(參照第六圖)。As shown in the third figure, the male roller engaging portion 26 is engaged with the roller 2a after the first chain link 2 is inserted into the first extending portion 21. Thereby, once the first chain link 2 is fixed, the user can check whether the second protrusion 30 can be inserted into the second chain even if the user does not push the first protrusion 20 and the first chain link 2 by hand. Chain link 3 (refer to the sixth figure).
如第五圖所示，第二凸出部30係具有第二曲率部31，第二曲率部31之曲率半徑Rb係較佳為3.0mm以下，更佳為2.0mm以下，尤佳為1.0mm以下。如第六圖所示，使曲率半徑Rb越小的話，於第二鏈條鏈節3插入第二凸出部30之際，滾子3b推抵第二凸出部30之力之中，與插入方向垂直的方向之力成份F2 將變小。其結果，第一延伸部21不易彎曲成使遠側端22移動於第二延伸部29之方向，而變得不易將第二凸出部30插入第二鏈條鏈節3。藉此，減低第一延伸部21彎曲導致的測量誤差。因此，使用者可正確測量鏈條之更換時期是否到來。As shown in the fifth figure, the second convex portion 30 has the second curvature portion 31, and the curvature radius Rb of the second curvature portion 31 is preferably 3.0 mm or less, more preferably 2.0 mm or less, and particularly preferably 1.0 mm. the following. As shown in FIG. 6, the smaller the radius of curvature Rb is, the more the roller 3b pushes against the force of the second projection 30 when the second chain link 3 is inserted into the second projection 30, and the insertion The force component F 2 in the direction perpendicular to the direction will become smaller. As a result, the first extending portion 21 is less likely to be bent to move the distal end 22 in the direction of the second extending portion 29, and it becomes difficult to insert the second protruding portion 30 into the second chain link 3. Thereby, the measurement error caused by the bending of the first extension portion 21 is reduced. Therefore, the user can correctly measure whether the replacement period of the chain is coming.
接下來說明本用於自行車之鏈條磨耗指示器1之使用方 法。首先，如第三圖所示，使用者係將第一延伸部21插入第一鏈條鏈節2。此時，透過凸形滾子嚙合部26將滾子2a嚙合，第一接觸面20a、第二接觸面20b分別彈性的推壓接觸滾子2a,2b。藉此，第一鏈條鏈節2係以插入第一延伸部21之狀態固定。其次，使用者係檢查第二凸出部30是否可插入第二鏈條鏈節3。Next, the user of the chain wear indicator 1 for bicycles will be described. law. First, as shown in the third figure, the user inserts the first extension 21 into the first chain link 2. At this time, the roller 2a is meshed by the male roller engaging portion 26, and the first contact surface 20a and the second contact surface 20b elastically press the contact rollers 2a, 2b, respectively. Thereby, the first chain link 2 is fixed in a state of being inserted into the first extension portion 21. Next, the user checks whether the second projection 30 can be inserted into the second chain link 3.
若是第二凸出部30可插入第二鏈條鏈節3之情況，則由於鏈條已因磨耗而伸長，因此使用者可判斷為是鏈條的更換時期。另一方面，若第二凸出部30無法插入第二鏈條鏈節3之情況，則鏈條並未因磨耗而那麼伸長，使用者則可判斷還可以繼續使用鏈條。If the second protruding portion 30 can be inserted into the second chain link 3, since the chain has been elongated due to wear, the user can judge that it is the replacement period of the chain. On the other hand, if the second projecting portion 30 cannot be inserted into the second chain link 3, the chain is not stretched due to wear, and the user can judge that the chain can continue to be used.
接著說明本實施形態之用於自行車之鏈條磨耗指示器1之效果。根據本用於自行車之鏈條磨耗指示器1，在與第二延伸部29之第二接觸面20b推抵第一鏈條鏈節2中的滾子2b之方向相同方向，產生第二凸出部30推抵滾子3b之力。藉此，在第一凸出部20之第二接觸面20b與第二凸出部30之間，第一延伸部21之第二接觸面20b推抵滾子之方向，與第二凸出部30之第三接觸面30a推抵滾子之方向形成相同，可正確的測量鏈條之伸長程度。再者，第一接觸面2a與第二接觸面2b插入同樣的鏈條鏈節中的兩個滾子2a,2b間，且彈性的推壓接觸滾子2a,2b。因而，可一次即進行固定鏈條之工作。因此，工作效率提高。又，由於可使鏈條磨耗指示器小型化，因此可減低製造成本。Next, the effect of the chain wear indicator 1 for a bicycle according to the present embodiment will be described. According to the chain wear indicator 1 for bicycles, the second projection 30 is produced in the same direction as the direction in which the second contact surface 20b of the second extension portion 29 pushes against the roller 2b in the first chain link 2 Push the force of the roller 3b. Thereby, between the second contact surface 20b of the first protruding portion 20 and the second protruding portion 30, the second contact surface 20b of the first extending portion 21 is pushed against the direction of the roller, and the second protruding portion The direction in which the third contact surface 30a of 30 is pushed against the roller is the same, and the degree of elongation of the chain can be correctly measured. Further, the first contact surface 2a and the second contact surface 2b are inserted between the two rollers 2a, 2b in the same chain link, and elastically urge the contact rollers 2a, 2b. Thus, the work of fixing the chain can be performed at one time. Therefore, work efficiency is improved. Moreover, since the chain wear indicator can be miniaturized, the manufacturing cost can be reduced.
接著說明本實施形態之變形例。第一實施形態中，顯示第一延伸部21形成為L形之情況，但第一延伸部21亦可形成為如第七圖、第八圖所示。Next, a modification of this embodiment will be described. In the first embodiment, the first extension portion 21 is formed in an L shape, but the first extension portion 21 may be formed as shown in the seventh and eighth figures.
第七圖中，在第一延伸部21與第二延伸部29之間設有圓形空隙27。彎曲部23係包含離近側端24最近之第一部份 23a、構件位在以大致直角彎曲之位置之第二部份23b、以及離遠側端22最近之第三部份23c。第一部份23a之寬度係比近側端24之寬度短。第三部分23c之寬度係比遠側端22之寬度短。第二部分23b之寬度係比第一部分23a之寬度長且亦比第三部份23c之寬度長。此種情況，將第一凸出部20插入第一鏈條鏈節2之際，第一部份23a與第三部份23c主要會彎曲。藉此，第一延伸部21彎曲成遠側端22移動於第二延伸部29之方向。In the seventh figure, a circular gap 27 is provided between the first extension 21 and the second extension 29. The curved portion 23 includes the first portion closest to the proximal end 24 23a. The member is positioned at a second portion 23b that is bent at a substantially right angle and a third portion 23c that is closest to the distal end 22. The width of the first portion 23a is shorter than the width of the proximal end 24. The width of the third portion 23c is shorter than the width of the distal end 22. The width of the second portion 23b is longer than the width of the first portion 23a and also longer than the width of the third portion 23c. In this case, when the first projection 20 is inserted into the first chain link 2, the first portion 23a and the third portion 23c are mainly bent. Thereby, the first extension 21 is curved such that the distal end 22 moves in the direction of the second extension 29.
第八圖中，在第一延伸部21與第二延伸部29之間設有長圓形空隙28。彎曲部23係相對近側端24凸出於第八圖中之Y方向，以比90度要大的角度彎曲。此種情況，將第一凸出部20插入第一鏈條鏈節2之際，彎曲部23主要會彎曲。藉此，第一延伸部21彎曲成遠側端22移動於第二延伸部29之方向。In the eighth figure, an oblong space 28 is provided between the first extension 21 and the second extension 29. The curved portion 23 is convex from the proximal end 24 in the Y direction in the eighth figure and is bent at an angle greater than 90 degrees. In this case, when the first projecting portion 20 is inserted into the first chain link 2, the bent portion 23 is mainly bent. Thereby, the first extension 21 is curved such that the distal end 22 moves in the direction of the second extension 29.
又，第一實施形態中，顯示第一凸出部20由第一延伸部21與第二延伸部29所構成之情況，亦可如第九圖之用於自行車之鏈條磨耗指示器1a所示，為第一凸出部20包含第一接觸面20a與第二接觸面20b之單一構造。此種情況，第一鏈條鏈節2係未在插入第一凸出部20之狀態固定。因而，使用者在檢查第二凸出部30是否可插入第二鏈條鏈節3之際，將朝第一凸出部20一邊用手推抵第一鏈條鏈節2一邊檢查。Further, in the first embodiment, the first projecting portion 20 is formed by the first extending portion 21 and the second extending portion 29, and may be as shown in the ninth figure for the bicycle chain wear indicator 1a. The first protrusion 20 includes a single structure of the first contact surface 20a and the second contact surface 20b. In this case, the first chain link 2 is not fixed in a state in which the first projection 20 is inserted. Therefore, when the user checks whether the second protruding portion 30 can be inserted into the second chain link 3, the user checks the first protruding portion 20 while pushing the first chain link 2 by hand.
1,1a‧‧‧用於自行車之鏈條磨耗指示器1,1a‧‧‧Chain wear indicator for bicycles
2‧‧‧第一鏈條鏈節2‧‧‧First chain link
2a,2b,3a,3b‧‧‧滾子2a, 2b, 3a, 3b‧‧ ‧rollers
3‧‧‧第二鏈條鏈節3‧‧‧Second chain link
10‧‧‧本體部10‧‧‧ Body Department
20‧‧‧第一凸出部20‧‧‧First bulge
20a‧‧‧第一接觸面20a‧‧‧First contact surface
20b‧‧‧第二接觸面20b‧‧‧second contact surface
21‧‧‧第一延伸部21‧‧‧First Extension
22‧‧‧遠側端22‧‧‧ distal end
23‧‧‧彎曲部23‧‧‧Bend
23a‧‧‧第一部份23a‧‧‧ first part
23b‧‧‧第二部份23b‧‧‧ second part
23c‧‧‧第三部份23c‧‧‧Part III
24‧‧‧近側端24‧‧‧ proximal end
25‧‧‧第一曲率部25‧‧‧First Curvature Department
26‧‧‧凸形滾子嚙合部26‧‧‧ convex roller meshing
28‧‧‧空隙28‧‧‧ gap
29‧‧‧第二延伸部29‧‧‧Second extension
30‧‧‧第二凸出部30‧‧‧second bulge
30a‧‧‧第三接觸面30a‧‧‧ third contact surface
31‧‧‧第二曲率部31‧‧‧ Second Curvature Department
D‧‧‧第二預定距離D‧‧‧second predetermined distance
F1 ,P1 F2 ‧‧‧力成份F 1 , P 1 F 2 ‧‧‧ force ingredients
L‧‧‧第一預定距離L‧‧‧first predetermined distance
Ra,Rb‧‧‧曲率半徑Ra, Rb‧‧‧ radius of curvature
W1 ,W2 ‧‧‧寬度W 1 , W 2 ‧‧‧Width
第一圖係本創作第一實施形態之用於自行車之鏈條磨耗指示器之側視圖。The first figure is a side view of a bicycle chain wear indicator for a bicycle according to a first embodiment of the present invention.
第二圖係本創作第一實施形態之用於自行車之鏈條磨耗指示器之第一凸出部附近之放大圖。The second drawing is an enlarged view of the vicinity of the first projection of the bicycle chain wear indicator of the first embodiment of the present invention.
第三圖係顯示第一凸出部插入鏈條鏈節之狀態的圖。The third figure shows a state in which the first projection is inserted into the chain link.
第四圖係用以說明第一凸出部插入鏈條鏈節之際作用於第一延伸部之力的圖。The fourth figure is a diagram for explaining the force acting on the first extension when the first projection is inserted into the chain link.
第五圖係本創作第一實施形態之用於自行車之鏈條磨耗指示器之第二凸出部附近之放大圖。The fifth drawing is an enlarged view of the vicinity of the second projection of the bicycle chain wear indicator of the first embodiment of the present invention.
第六圖係用以說明於第二凸出部插入鏈條鏈節之際作用於第二凸出部之力的圖。The sixth figure is a view for explaining the force acting on the second projection when the second projection is inserted into the chain link.
第七圖係顯示本創作第一實施形態之用於自行車之鏈條磨耗指示器之第一及第二延伸部之變形例的圖。Fig. 7 is a view showing a modification of the first and second extension portions for the bicycle chain wear indicator of the first embodiment of the present invention.
第八圖係顯示本創作第一實施形態之用於自行車之鏈條磨耗指示器之第一及第二延伸部之另一變形例的圖。Fig. 8 is a view showing another modification of the first and second extension portions for the bicycle chain wear indicator of the first embodiment of the present invention.
第九圖係本創作第一實施形態之變形例之用於自行車之鏈條磨耗指示器之側視圖。The ninth drawing is a side view of a bicycle chain wear indicator for a bicycle according to a modification of the first embodiment of the present invention.
1‧‧‧用於自行車之鏈條磨耗指示器1‧‧‧Chain wear indicator for bicycles
10‧‧‧本體部10‧‧‧ Body Department
20‧‧‧第一凸出部20‧‧‧First bulge
20a‧‧‧第一接觸面20a‧‧‧First contact surface
20b‧‧‧第二接觸面20b‧‧‧second contact surface
21‧‧‧第一延伸部21‧‧‧First Extension
22‧‧‧遠側端22‧‧‧ distal end
23‧‧‧彎曲部23‧‧‧Bend
24‧‧‧近側端24‧‧‧ proximal end
29‧‧‧第二延伸部29‧‧‧Second extension
30‧‧‧第二凸出部30‧‧‧second bulge
30a‧‧‧第三接觸面30a‧‧‧ third contact surface
31‧‧‧第二曲率部31‧‧‧ Second Curvature Department
D‧‧‧第二預定距離D‧‧‧second predetermined distance
L‧‧‧第一預定距離L‧‧‧first predetermined distance
W1 ,W2 ‧‧‧寬度W 1 , W 2 ‧‧‧Width
Claims (19)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101216339U TWM448686U (en) | 2012-08-24 | 2012-08-24 | Chain wear indicator for bicycle |
| DE201320007460 DE202013007460U1 (en) | 2012-08-24 | 2013-08-20 | Bicycle chain wear indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101216339U TWM448686U (en) | 2012-08-24 | 2012-08-24 | Chain wear indicator for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TWM448686U true TWM448686U (en) | 2013-03-11 |
Family
ID=48472174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101216339U TWM448686U (en) | 2012-08-24 | 2012-08-24 | Chain wear indicator for bicycle |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE202013007460U1 (en) |
| TW (1) | TWM448686U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10571235B2 (en) | 2018-03-07 | 2020-02-25 | Honda Motor Co., Ltd. | Flange check tool |
| US10589811B2 (en) | 2018-03-22 | 2020-03-17 | Honda Motor Co., Ltd | Door hem length measurement tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6178824B1 (en) | 1998-10-14 | 2001-01-30 | Shimano Inc. | Chain wear indicator |
-
2012
- 2012-08-24 TW TW101216339U patent/TWM448686U/en not_active IP Right Cessation
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2013
- 2013-08-20 DE DE201320007460 patent/DE202013007460U1/en not_active Expired - Lifetime
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| DE202013007460U1 (en) | 2013-09-11 |
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