五、新型說明： 【新型所屬之技術領域】 本創作係一種涉及於交通車輛的技術領域，尤指腳踏車 的踏板’其心軸結構可以減少應力集中對結構造成的不良影 響。 【先前技術】 按由自行車運動已經受到普世的喜愛，自行車的輕便、 無耗油的環保特性以及兼具健身的功能，都是騎行自行車的 優點。而自行車設置有可旋轉的踏板，用以供使用者腳部踩 踏以驅動車輪前進，踏板中間組穿設有一可旋轉的心軸，一 般心轴是如第六圖所示’心軸（6〇)一端樞設於踏板（4〇)中央 内部，而另一端突出於踏板（4〇)之外，是形成外螺紋（62)， 用以接合曲柄（50)。心軸（60)—般是實心體，透過車削加工 成形，在近外螺紋(62)處形成一環外徑較心軸（6〇)為大的擋 緣（61)，而車削外螺紋（62)之後，通常會採取直角退刀，意 即刀具車削外螺紋（62)至終點近擋緣（61)處，以垂直方式來 退刀，因此在外螺紋（62)與擋緣（61)之間會留剩一小段退刀 區（63)，用以控制外螺紋（62)的有效長度，退刀區（63)外徑 無螺紋，外徑較外螺紋（62)為小，擔緣（61)作用是可供曲柄 (50)接合於外螺紋（62)，得以抵靠於擋緣（61)辅助定位。 如此結構已行之有年，但是長久以來，心軸（6〇)的結構 卻存在幾項問題： 1.由於車削加工心軸（60)的外螺紋（62)必然會留下退 刀區（63)，並且一體車削擋緣（61)成形，所以退刀區（6^ 與擋緣（61)之間的斷面會形成垂直狀的轉角（64)，因此該轉 角（64)便會造成應力集中’以致影響心軸（60)長久使用^耐 M436634 用強度，造成心軸（60)長期使用，會在轉角（64)累積應力集 中甚至產生斷裂的安全性問題。 2. 心軸（60)的原材料外徑必須至少大於擋緣（61)外 控，因此心軸（60)的材料將會被削去大部份，只留下擋緣（61) 的一小段區域，在現今原物料逐漸高漲的趨勢下，將會增加 成本與降低市場競爭力。V. New description: [New technical field] This creation is a technical field related to traffic vehicles, especially the pedals of bicycles whose mandrel structure can reduce the adverse effects of stress concentration on the structure. [Prior Art] According to the popularity of bicycles, the bicycle's light, fuel-free and environmentally-friendly features, as well as fitness functions, are all advantages of cycling. The bicycle is provided with a rotatable pedal for the user to step on the foot to drive the wheel forward. The middle group of the pedal is provided with a rotatable mandrel. The general mandrel is as shown in the sixth figure. One end is pivoted inside the center of the pedal (4〇), and the other end protrudes beyond the pedal (4〇) to form an external thread (62) for engaging the crank (50). The mandrel (60) is generally a solid body formed by turning, and a ring having a larger outer diameter than the mandrel (6〇) is formed at the proximal thread (62), and the external thread is turned (62). After that, it usually takes a right angle retraction, which means that the tool turns the external thread (62) to the end near the rim (61) and retracts in a vertical manner, so between the external thread (62) and the retaining edge (61) A small retraction zone (63) will be left to control the effective length of the external thread (62). The outer diameter of the retracting zone (63) is unthreaded, and the outer diameter is smaller than the external thread (62). The effect is that the crank (50) can be engaged with the external thread (62) to assist in positioning against the rim (61). This structure has been around for a long time, but for a long time, the structure of the mandrel (6〇) has several problems: 1. The external thread (62) of the turning mandrel (60) will inevitably leave the retraction zone ( 63), and the integrated turning flange (61) is formed, so the cross section between the retreating zone (6^ and the retaining edge (61) forms a vertical corner (64), so the corner (64) will cause Stress concentration 'so that the mandrel (60) is used for a long time. ^M436634 is used for strength, causing long-term use of the mandrel (60), which will accumulate stress concentration at the corner (64) and even cause safety problems of fracture. The outer diameter of the raw material must be at least larger than the outer edge of the retaining edge (61), so the material of the mandrel (60) will be cut off mostly, leaving only a small area of the retaining edge (61), in the present material Gradually rising trends will increase costs and reduce market competitiveness.
3. 按由踏板（4〇)在心軸（6〇)末端至曲柄（5〇)的距離長 度即是跨距’是供腳掌踩踏於踏板(4〇)的距離，然因擋緣（61) 相應心軸⑽)位置是固定，擔緣（61)是供曲柄⑽)抵靠，意 即曲柄（50)結合於心軸⑽的位置是固定，無法因應腳掌大 小來調整跨距，此舉並不方便。 【新型内容】3. Press the distance from the end of the mandrel (6〇) to the crank (5〇) by the pedal (4〇) that is the span ' is the distance for the foot to step on the pedal (4〇), but because of the retaining edge (61) The position of the corresponding mandrel (10) is fixed, and the rim (61) is for the crank (10) to abut, that is, the position of the crank (50) coupled to the mandrel (10) is fixed, and the span cannot be adjusted according to the size of the sole. inconvenient. [New content]
本創作者鑑於^述的問題，進而用^研究開發，因此本 創作主要目的係在提供—種自行車踏板心軸之改良結構，其 主要係將〜軸&為組合式結構’不同於以往—體車削成形的 t構’在叫的外螺紋螺紋接合―用以供曲減靠的擔隔 衣而可魏解決應力集巾造成心、軸日久恐_的顧慮，提 ^:轴的強度’並且有效降低心軸的材料成本，提高其市場 任μ本^作另目的係、在提供—種自行車踏板心軸之改良 係可適度加讀崎的外徑，而能適度增加其與曲 柄抵罪的面積。 乡士爐本^又—目的係在提供—種自行車踏板心軸之改良 ^’。調整曲域靠於播隔_位置，可以變動調整 Α 了 述的目的’本創作所運用的技術手段係在 4 1供-種自行車踏板心轴之改良結構，其係_可安裝於自 〜丁=板的心軸’其通體形成—軸身，該崎有兩端，其中 及疋可供曲柄連結的連接端’該連接端外側為外螺紋；以 隔環為t於該心軸之該連接端’該檔 外接合於該 要說創作的技術手段’本創作可以獲得的功效簡 ^? #"fo1 的外徑可適騎大，接合觀環，而播隔環 積，使曲柄的定位功能更穩9定0指㈣辰之接觸曲柄的擋面面 依靠於，位移，進-步調奴位 靈活地因應腳掌大小，改4曲柄至踏板的跨距，得以 調整跨距大小的目的:1调整擋隔環及曲柄的位置，達到可 4、可以有效齡結構。 身，較軸身外徑為大者θ 由於心軸最大外徑僅是軸 合於心轴，故心轴所車^力^環’而擒隔環另外製造並且組 選用外徑較軸身稍大的柃去掉的材料遠較習知為少，可 昇市場競爭力。+材來加工’進而減少材料成本，提 【實施方式】 圖 本創作係1自行細㈣之嫩構’如第— M436634 所示，踏板（40)内部組裝一心軸（1〇)，心軸（1〇)的軸身（ιι) 露出踏板(40)之一端是連接端（12)，該連接端（12)螺紋接 合一擋隔環（20)。 ^ 請再參看第二、三圖所示，本創作的心軸可以車 削成形，亦可採擠伸成形，其通體形成一可呈中空的軸身 (11)，軸身（11)中央可通體貫穿設置一呈六角狀的貫孔 (14)，形成貫孔（14)得以使心軸（1〇)具輕量化的作用，貫 孔（14)一端如第二圖所示，在一末端設置内螺孔（11〇)，用 • 以心軸（10)樞設於踏板（4〇)時，供螺栓（111)螺鎖於末端的 内螺孔（110)中，將心轴（1〇)安裝於踏板(4〇)内，心轴（1〇) 另一端是連接端（12)，用以連結第四圖所示的曲柄（5〇)， 該連接端（12)外側車削形成外螺紋（13)，因此轴身（11)是 心軸（10)最大外徑；以及 該播隔環（20)是用以螺紋接合於心軸（1〇)，該擔隔環 (20)為環體，外徑大於心轴（1())轴身（11)外徑，並具有一 ^當厚度’擔^?>環(2())内環岐形成内螺紋⑵），一端面 • 《形成擒面（22);藉以擔隔環⑽）利用其内螺紋(21)對應 螺紋接合於心軸（1〇)的外螺紋⑽，讓擔隔環(聊結合於 心轴（10) ’因此擔隔環（20)外徑大於軸身（11)外徑，如第 三圖所示。 而第四圖所示，是擋隔環（20)結合於心軸（1〇)，曲柄 (50)即可螺紋接合於外螺紋（13)，並且可以齡於擔隔環 (20)的播面（22)，據以供曲柄⑽有所輔助定位。 此本創作完全沒有第六圖習知心、軸會存在應力集中 的問題&於指隔環（2〇)是另外組合於心轴（⑻，所以不 會在心軸(10)軸身（η)本體外徑階級位差而衍生應力集中 6 =象’故而心軸⑽的強度可以有效提昇同時心轴⑽ 成本可崎到最低，採时大於㈣（⑴外徑的棒 此外’第五圖所示之實施例，是說明本創作可以在心 j 10)的連接端⑽增長軸向長度，讓外螺紋（13)分佈長 ^長’如此-來’可以在曲柄⑽接合於連接端⑽之 後’連接端（12)餘下末端長度，再供—螺帽（⑸螺紋接合 於外螺、、文(13)而增力σ曲柄（50)定位不輕易鬆動的功能。 本創作的擔^%環（2〇)可以視需要而加大外徑，造成與 :柄(50)接觸的擋面(22)的面積因此適度增加，連帶更穩 定曲柄（50)結合於心軸（1〇)的結構。 心 而本創作由於擋隔環（2〇)是螺紋接合於心轴（1〇)，因 此可以因應跨距大小來調整位置，該跨距即是踏板⑽在 、轴（1G)S又置内螺孔⑴〇)的末端（如第二圖）該端至曲柄 (50)的距離長度，意即曲柄（5〇)結合於心軸（1〇)的位置可 以存在彈性’當擋隔環（2〇)更接近連接端（12)末梢，則跨 距増長，反之，擋隔環（2〇)朝向踏板（4〇)方向位移，則跨 距縮短，跨距即意指因應腳掌大小來調整，腳掌小者，跨 距要小，反之，腳掌大者，跨距要大，俾使腳掌可以確實 地踩踏於踏板（40)上，不會過份晃動，也不會造成接觸面 不足，本創作可以改善以往無法調整跨距的問題。 上述貧施例僅為例示性說明本創作之技術及其功效， 而非用於限制本創作。任何熟於此項技術人士均可在不違 背本創作之技術原理及精神的情況下，對上述實施例進行 修改及變化’因此本創作之權利保護範圍應如後所述之申 請專利範圍所列。 M436634 【圖式簡單說明】 第一圖係本創作較佳實施例之立體圖。 第二圖係本創作較佳實施例之立體元件分解圖。 第三圖係本創作較佳實施例之組合平面圖。 第四圖係本創作較佳實施例之組合曲柄的平面圖 第五圖係本創作另一較佳實施例之組合平面圖。 第六圖係現有踏板心軸之平面圖。 【主要元件符號說明】 (10)心轴 （11)轴身 (110)末端 (111)螺栓 (12)連接端 (14)貫孔 (13)外螺紋 (20)擋隔環 (21)内螺紋 (22)擋面 (40)踏板 (50)曲柄 (25)螺帽 (60)心軸 (61)擋緣 (62)外螺紋 (64)轉角 (63)退刀區In view of the problems described by the creator, and further research and development, the main purpose of this creation is to provide an improved structure of the bicycle pedal mandrel, which mainly uses the ~axis & The t-configuration of the body turning forming is called the external thread threading joint, which is used to compensate the weight of the weight-receiving clothing, and can solve the worry that the stress collecting towel causes the heart and the shaft to be fearful for a long time. And effectively reduce the material cost of the mandrel, improve its market, and make the improvement of the bicycle pedal mandrel to increase the outer diameter of the carousel, and moderately increase its resistance to the crank. area. The township furnace furnace ^ also - the purpose is to provide - the improvement of the bicycle pedal mandrel ^'. The adjustment of the song field depends on the position of the broadcast _ position, and can be adjusted and adjusted. The technical means used in this creation is based on the improved structure of the 4 pedal-type bicycle pedal mandrel, which can be installed in = the mandrel of the plate 'the whole body is formed - the shaft body, the two ends of the bar, and the connecting end of the cymbal for the crank joint is externally threaded on the outer side of the connecting end; the connecting ring is the connecting ring of the mandrel The end of the file is connected to the technical means of creation. The effect of this creation can be simplified. The outer diameter of the #"fo1 can be suitable for riding large, engaging the ring of view, and the distribution of the loop, so that the positioning of the crank The function is more stable. 9 is fixed. 0 means that the contact surface of the contact crank of the (four) Chen depends on, the displacement, the step-by-step adjustment of the slave position flexibly responds to the size of the sole of the foot, and the 4th crank to the span of the pedal can be adjusted to adjust the span size: 1 The position of the retaining ring and the crank can reach 4, which can be effective in age structure. The outer diameter of the shaft is larger than the outer diameter of the shaft. Since the maximum outer diameter of the mandrel is only axially coupled to the mandrel, the mandrel is driven by the ring and the shackle is separately manufactured and the outer diameter of the group is slightly smaller than the shaft. The materials that the big cockroaches remove are far less than the conventional ones, which can increase the market competitiveness. + material to process 'and thus reduce the cost of materials, [Embodiment] Figure creation system 1 self-fine (four) of the tender structure 'as shown in the first - M436634, the pedal (40) internally assembled a mandrel (1 〇), mandrel ( The shaft (1) of the shaft (1) is one end of the pedal (40) which is a connecting end (12) which is threadedly engaged with a blocking ring (20). ^ Please refer to the second and third figures. The mandrel of this creation can be formed by turning or extrusion. The whole body can form a hollow shaft body (11), and the shaft body (11) can be connected to the center. A hexagonal through hole (14) is formed through the through hole (14) to make the mandrel (1) lighter, and one end of the through hole (14) is disposed at one end as shown in the second figure. Inner screw hole (11〇), when the mandrel (10) is pivoted on the pedal (4〇), the bolt (111) is screwed into the inner screw hole (110) at the end, and the mandrel (1〇) Installed in the pedal (4〇), the other end of the mandrel (1〇) is the connecting end (12) for connecting the crank (5〇) shown in the fourth figure, and the outer side of the connecting end (12) is turned outside. a thread (13), such that the shaft body (11) is the maximum outer diameter of the mandrel (10); and the broadcast ring (20) is for threaded engagement with the mandrel (1), the spacer ring (20) is The outer diameter of the ring body is larger than the outer diameter of the shaft (11) of the mandrel (1), and has a thickness of 'the inner ring' (2), and the inner ring (2) is formed by the inner ring (2). • “Formation of the face (22); by means of the ring (10)) The pattern (21) corresponds to the external thread (10) of the threaded joint of the mandrel (1〇), and the spacer ring (which is coupled to the mandrel (10)' so that the outer diameter of the spacer ring (20) is larger than the outer diameter of the shaft body (11) As shown in the third figure, and shown in the fourth figure, the retaining ring (20) is coupled to the mandrel (1〇), and the crank (50) can be threadedly engaged with the external thread (13) and can be aged The broadcast surface (22) of the spacer ring (20) is used for the auxiliary positioning of the crank (10). This creation does not have the problem of the sixth figure, the stress concentration of the shaft and the spacer ring (2〇 ) is additionally combined with the mandrel ((8), so it will not be in the mandrel (10) shaft body (η) body outer diameter class difference and the derived stress concentration 6 = like 'so the strength of the mandrel (10) can be effectively improved while the mandrel (10) The cost can be reduced to the lowest, the mining time is greater than (4) ((1) the outer diameter of the rod in addition to the example shown in the fifth figure, which shows that the creation can be at the connection end of the heart (10), the axial length is increased, and the external thread (13) The distribution length ^ length 'so-to' can be after the crank (10) is joined to the connection end (10), the length of the remaining end of the connection end (12), and then the nut ((5) The pattern is joined to the outer snail, and the text (13) and the force σ crank (50) is not easily loosened. The load of the creation of the ring (2〇) can be increased as needed, resulting in: (50) The area of the contact face (22) is thus moderately increased, and the more stable crank (50) is coupled to the structure of the mandrel (1〇). The present invention is because the retaining ring (2〇) is threadedly engaged. Mandrel (1〇), so the position can be adjusted according to the span size, which is the end of the pedal (10), the shaft (1G) S and the inner screw hole (1) () (as shown in the second figure) The distance of the crank (50), that is, the position where the crank (5〇) is coupled to the mandrel (1〇) may have elasticity. 'When the retaining ring (2〇) is closer to the end of the connecting end (12), the span is longer. On the contrary, if the blocking ring (2〇) is displaced toward the pedal (4〇), the span is shortened. The span means that the foot is adjusted according to the size of the sole. The foot is small and the span is small. Otherwise, the sole is larger. The span is large, so that the sole of the foot can be stepped on the pedal (40) without excessive shaking or causing insufficient contact surface. Good question can not adjust the span of the past. The above-mentioned poor practices are merely illustrative of the techniques and effects of the present invention, and are not intended to limit the creation. Anyone skilled in the art can modify and change the above embodiments without violating the technical principles and spirit of this creation. Therefore, the scope of protection of this creation should be as listed in the patent application scope mentioned later. . M436634 [Simple Description of the Drawings] The first drawing is a perspective view of a preferred embodiment of the present invention. The second drawing is an exploded view of the three-dimensional element of the preferred embodiment of the present invention. The third drawing is a combined plan view of a preferred embodiment of the present invention. The fourth drawing is a plan view of a combination crank of the preferred embodiment of the present invention. The fifth drawing is a combined plan view of another preferred embodiment of the present invention. The sixth picture is a plan view of the existing pedal mandrel. [Main component symbol description] (10) Mandrel (11) Shaft body (110) End (111) Bolt (12) Connection end (14) Through hole (13) External thread (20) Retaining ring (21) Internal thread (22) Stop surface (40) Pedal (50) Crank (25) Nut (60) Mandrel (61) Retaining edge (62) External thread (64) Corner (63) Retraction zone