五、新型說明： 【新型所屬之技術領域】 、本創作主要係揭示一種自行車之車頭碗組結構設計， 尤指一種可限制自行車車頭樞轉角度的車頭碗組。 【先前技術】 自行車之轉向機構75藉由束管與前管之間的互相樞轉 而達成轉向之功能，因此，束管與前管之間的枢轉靈活度 將衫響著自行車騎乘者於轉向時的反應時間與手感；另 外’當轉向機構向左或向右樞轉超過90。時，自行車前輪 可月“*生逆轉之狀況’若於高速騎乘狀態下轉向機構 β工或向右轉超過9G。，更有可紐生摔倒之危險，為 活與更穩定的操作’業者設法改善束管與前管 參照中華民國專利公告編號第 下碗組具有===姻㈣㈣珠，讓上' 上述習知車頭碗組係利用束管 車頭碗組使轉向機構達到更加靈私轉個 而，束管與前管之區轉靈活度的問題，然 乘過程中發生轉向機構_超過卯。的二有= M399B29 安事件。料’過度的轉簡㈣構亦會連帶的拉扯到 連接於轉向機構車把手上的煞車導線或變速導線，因而導 致煞車導線或變速導線的毀損。 因此’本創作想排除或至少減輕先前技術所遭遇的問 題’改善轉向機構之靈活度，同時更希望能增加自行車騎 乘時之安全性。 【新型内容】 本創作所欲解決之技術問題在於針對現有技術存在的 上述缺失，提供—種具轉向限位之車頭碗組（二）。 本創作的主要目的在於，該凹槽由第一止端至第二止 端與上蓋中心、點形成—個扇形域扇形展開之角度定義為 一個延伸角度，藉由該延伸弧度使轉向機構之最大柩轉角 度不超過180°。 本創作的次要目的在於，該束環組設於培林内部，使 束環能相對培林該切命χ供轉向機構之直管穿 設’因此該直管能相對前f_，使騎乘者能靈活地操作 轉向機構。 本創作的又-目的在於，該凸塊於培林徑向方向更且 有二個第-寬度，該凸塊沿著該培林弧向方向具有一個第 -見度’該第二寬度大於第—寬度，因此該凸塊能承受更 大的剪應力。 +本創作的更—目的在於’當樞轉轉向機構至凸塊碰觸 到第-止端或第二止端時’減震塊能吸收凸塊碰觸到第一 4 止端或第二止端的震動’因而使縣者能具有更優質的騎 乘感受。 本創作的再目的在於，||由分開成型的凸塊有助於 培林之保養與維修，且更可根據所需更換不同尺寸的凸塊 以配合騎乘場合微調最大樞轉角度。 本；I!作的再目的在於，該上碗組設於培林與前管之 間，該上碗可搭配不同財的前管，㈣浦向限位之車 頭碗組（二）能在㈣的培林尺寸下適麟不同尺寸 管。 其他目的、優點和本創作的新賴特性將從以下詳細的 描述與相關的附圖更加顯明。 【實施方式】 有關本創作所採用之技術、手段及其功效，兹舉四個 較佳實施例並配合圖式詳述如後，此僅供說明之用，在專 利申請上並不受此種結構之限制。 —參照圖-至圖三’為本創作具轉向限位之車頭碗組 ）1社體外觀圖及立體分解圖。該具轉向限位之 頭碗、，且（一）1係用以組設於自行 構之直管咖，㈣⑷目鞭2瓣轉轉^ =向限位之車頭碗組（二）丨包含—個培林iq、—個束環 2〇以及一個上蓋30。 又 該培林10具有-個第一端101以及-個第二端102 培林1G的第-端固設於自行車之前管2，該培林1〇 M399829 不會相對前管2旋轉. 該束環加之外周緣嵌設於該培林1〇内部， 能相對培林1〇旋轉，束产 之内周緣，使束環20 因此該直管3能相對前管2框:内:：:直管3穿設’ 該上蓋3。_於培㈣的;=: 灰塵洛入培林10内部， 一鳊102以防止 該培林㈣《 不會相對絲3旋轉。 -個谇林内框13 S ^。林外框U、—個鋼珠環12以及 於培林外框心部，且鋼珠林内框13依序組設 内框13之間；該培林1G更且=培林外框11與培林 ^ .. 尺’、有—個防水圈14，根攄木f 匕例，該防水圈14組設於土立秣外 且責、p σ林外框丨丨與培林内框13之間 二端】02。該培林1〇第二端1{)2形成一 =1，該上蓋30靠近培林1〇之一端形成一個第二限 …立^根據本實施例，該第—限位面⑴平行於該第二 立=且彼此相對。該第—限位面⑴凸設有一個凸塊 12 ,根據本實施例’該凸塊112是—體成型於該第一限位 ^11。該凸塊112 一側形成—個強化塊⑽，該強化塊 】沿著培林10徑向方向朝培林10中心延伸以增加凸塊 2之強度。該第二限位面31對應於該凸塊ιΐ2的位置設 有—個凹槽32，該凹槽32沿著上蓋3〇的一個固定半徑弧 狀延伸。 參閱圖四以及圖五，根據本實施例’該凸塊112大致 上呈長方體狀並朝向上蓋3〇延伸，該凸塊112頂面與第一 限位面111具有一個第—高度M，該第一限位面⑴與該 6 :曰上底面具有一個第二高度h2’該第一高度心、於$ =度h2，因此該凸塊112頂面不會與凹槽32底面產 方向ϊιΓ夺參閱圖六至圖八，該凸塊112於培林10徑向 弧第—寬度^，該凸塊112沿著該培林10 =方向具有-個第二寬，該第二寬度w2大於第— 於3:此該凸塊112能承受更大的剪應力。該凹槽犯 * 30杈向方向具有一個固定的第三寬度w3，該第— =度wl小於第三寬度w3，且由於該凹槽Μ沿著上蓋 向機2定半徑弧狀延伸，因此當騎乘者轉動自行車之轉 ⑽=時’該凹槽32相對凸塊112移動而不產生干涉。 -個Γ糟32沿著上蓋30弧狀方向之兩端末分別定義為 移動職 1以及一個第二止端322，該凸塊112的 限於該第-止·與第二止端322之間，由 ^ i 30隨著轉向機構枢轉且培林1〇固設於前管2， 麻轉動轉向機構時’該凹槽32與凸塊112會產生相對 日士且當第一止端321或第二止端322抵頂於該凸塊112 轉向機構之樞轉角度即受到限制。轉動轉向機構使凸 虹姑2由第一止端321蝴移動至第二止端322所形成的 °角度疋義為最大樞轉角度。該凹槽32由第一止端321 第二止端322與上蓋3G中心點形成一個扇形且該扇形展 =角度定義為—個延伸角度A，藉由該延伸弧度A使轉 。，構之最大轉角度不超過18『。根據本實施例，該延 仲角度小於1別°。 參閱圖九以及圖十，為本創作第二個實施例的立體分 M399B29 解圖本I彳作第二個實施例大體上與前述第—個實施例相 同’不、同之特徵在於該凹槽32之第-止端321與第二止端 322刀別更沿著上$ 3〇之弧向方向延伸一個容槽犯，該容 槽33分別設有—個減震塊％，參關十_，當樞轉轉向 機構至凸塊112碰觸到第—止端321或第二止端322時， 減震塊34能吸收凸塊112碰觸到第—止端321或第二止端 322的震動，因而使騎乘者能具有更優質的騎乘感受。 參閱圖十二，為本創作第三個實施例的立體分解圖， 本創作第三個實施例大體上與前述第—個實施例相同，不 同之^徵在於凸塊112a為獨立成型，該第—限位面⑴ 朝向前管方触有-個卡槽113,該凸塊U2a嵌設於該卡 槽113。藉由分開成型的凸塊U2a有助於培林1〇之保養 與維修，且更可根據所需更換不同尺柏凸塊心以配合 騎乘場合微調最大樞轉角度。 參閱圖十一至十四’為本創作第四個實施例的立體分 解圖與剖面示意圖’本創作第四個實施例大體上盘前述第 -個實施例相同，不同之特徵在於該具轉向限位之車頭碗 組、（t)1更包含—個上碗40，該上碗I组設於培林10 與前官2之間’虹碗40可搭配不同尺寸的前管2，使与 具轉向限位之車頭碗組㈡丨能她_培林1G尺打 適用於不同尺寸的前管2。 惟上尸/f迎石 ，王π个剔作之較佳實施例而已，杏 以之蚊本創作實施之_，故舉凡數值之變更或 件之置換，或依本創作中請專利範_作之均等變化_ 8 飾，皆應仍屬本新型專利涵蓋之範疇。 【圖式簡單說明】 二）第一實施例 圖.為本創作具轉向限位之車頭碗組 之立體外觀圖。 圖為本創作具轉向限位之車頭碗組（二）第一實施例 之立體分解圖。 圖三：為本創作具轉向限位之車頭碗組（二）第一實施例 之另—角度立體分解圖。 圖四，·為本創作圖-沿4-4剖面線所取之剖面圖。 圖五：為本創作圖四之局部放大圖，表示凸塊*凹槽不會 產生干涉。 為本創作圖四沿6-6剖面線所取之剖面圖。 圖七：為本創作具轉向限位之車頭碗組（二）第一實施例 之作動示意圖，表示凹槽之第一止端抵頂於凸塊。 圖八：為本創作具轉向限位之車頭碗組（二）第一實施例 之作動示意圖，表示凹槽之第二止端抵頂於凸塊。 圖九：為本創作具轉向限位之車頭碗組（二）第二實施例 之立體分解圖。 圖十··為本創作具轉向限位之車頭碗組（二）第二實施例 另一角度之立體分解圖。 圖十一 ·.為本創作具轉向限位之車頭碗組（二）第二實施 例之剖面示意圖。 圖十二：為本創作具轉向限位之車頭碗組（二）第三實施 M399829 例之立體分解圖。 圖十三：為本創作具轉向限位之車頭碗組（二）第四實施 例之立體分解圖。 圖十四：為本創作具轉向限位之車頭碗組（二）第四實施 例之剖面示意圖。 【主要元件符號說明】 1 具轉向限位之車頭碗組（ 二） 10 培林 101 第一端 102 第二端 11 培林外框 111 第一限位面 112 凸塊 1121 強化塊 112a 凸塊 113 卡槽 12 鋼珠環 13 培林内框 14 防水圈 20 束環 30 上蓋 31 第二限位面 32 凹槽 321 第一止端 322 第二止端 33 容槽 34 減震塊 40 上碗 2 前管 3 直管 hi 第一高度 h2 第二高度 wl 第一寬度 w2 第二寬度 w3 第三寬度 A 延伸角度V. New description: [New technical field] This creation mainly reveals the structure design of a bicycle head group, especially a front group that can limit the pivoting angle of the bicycle head. [Prior Art] The steering mechanism 75 of the bicycle realizes the steering function by pivoting between the beam tube and the front tube, so that the pivotal flexibility between the beam tube and the front tube will sing the bicycle rider Reaction time and feel when turning; additionally 'When the steering mechanism pivots more than 90 to the left or right. At the time of the bicycle, the front wheel of the bicycle can be "returned to the state of life". If the steering mechanism is rotated or turned to the right by more than 9G in the high-speed riding state, there is a danger that the New York can fall, for the live and more stable operation. The operator tried to improve the beam tube and the front tube with reference to the Republic of China Patent Announcement No. The next bowl has === marriage (four) (four) beads, so that the above-mentioned conventional front-end headsets use the beam-tube headset to make the steering mechanism more flexible. However, the problem of the flexibility of the beam tube and the front tube is that the steering mechanism _ exceeds 过程. The second has = M399B29 Ann event. The material 'excessive simplification (4) structure will also be linked to the connection Brake wire or shifting wire on the steering handle of the steering mechanism, thus causing damage to the brake wire or the shifting wire. Therefore, 'this creation wants to eliminate or at least alleviate the problems encountered in the prior art' to improve the flexibility of the steering mechanism, and more hope Increase the safety of bicycle riding. [New content] The technical problem to be solved by this creative is to provide a vehicle with a steering limit for the above-mentioned shortcomings of the prior art. Head set (2). The main purpose of the creation is that the groove is defined by the angle from the first end to the second end to the center of the upper cover, and the fan-shaped fan-shaped expansion angle is defined as an extension angle. The extension arc makes the maximum twist angle of the steering mechanism not exceed 180°. The secondary purpose of this creation is that the bundle ring is set inside the Palin, so that the bundle ring can be compared with the Palin. So that the straight tube can be relative to the front f_, so that the rider can flexibly operate the steering mechanism. The purpose of the creation is that the lug has a second width in the radial direction of the Palin, The bump has a first visibility along the direction of the Palin arc. The second width is greater than the first width, so the bump can withstand greater shear stress. + The purpose of the creation is to 'when pivoting When the steering mechanism hits the first stop or the second end of the bump, the shock absorber can absorb the vibration of the bump touching the first 4 end or the second end, thus enabling the county to have better quality. The riding experience. The purpose of this creation is that || The block helps the maintenance and repair of the Palin, and it is also possible to replace the different sizes of bumps according to the needs to fine-tune the maximum pivoting angle with the riding occasion. The purpose of this is to set the upper bowl to Between the Palin and the front tube, the upper bowl can be matched with the front tube of different wealth, and (4) the head bracket of the Puxiang limit (2) can be different size tubes under the Palin size of (4). Other purposes, advantages and The new features of the present invention will be more apparent from the following detailed description and related drawings. [Embodiment] The techniques, means and functions of the present invention are described in the following four preferred embodiments. As described later, this is for illustrative purposes only and is not subject to this structure in patent applications. - Refer to Figure-to-Three's for the headboard of the steering head with a steering limit) The three-dimensional exploded view. The head with the steering limit, and (1) 1 is used to set up the straight tube coffee of the self-construction, (4) (4) the whip 2 flaps turn ^ = the limit head of the front bowl (two ) 丨 contains a Palin iq, a bundle ring 2 〇 and an upper cover 30. Further, the Palin 10 has a first end 101 and a second end 102. The first end of the Palin 1G is fixed to the front tube 2 of the bicycle, and the Palin 1〇 M399829 does not rotate relative to the front tube 2. The outer circumference of the ring is embedded in the inner part of the Palin, and can be rotated relative to the Palin, and the inner circumference of the bundle is produced so that the bundle ring 20 can be aligned with the front tube 2 of the straight tube 3: inner::: straight tube 3 wear 'the upper cover 3. _ Yu Pei (4); =: Dust into the interior of the Palin 10, a 102 to prevent the Palin (four) "will not rotate relative to the wire 3. - A Yulin inner frame 13 S ^. The outer frame U, the steel ball ring 12 and the outer core of the Palin, and the inner frame 13 of the steel bead forest are sequentially arranged between the inner frames 13; the Palin 1G is more = the Palin outer frame 11 and the Palin ^ .. 尺', has a waterproof ring 14, the root 摅 f f 匕 , 该 该 该 该 该 该 该 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水 防水02. The second end 1{)2 of the Palin 1 is formed as a=1, and the upper cover 30 is adjacent to one end of the Palin 1 to form a second limit. According to the embodiment, the first limiting surface (1) is parallel to the Second vertical = and opposite each other. The first limiting surface (1) is convexly provided with a bump 12 which is formed in the first limit ^11 according to the embodiment. One side of the bump 112 forms a reinforcing block (10) which extends in the radial direction of the Palin 10 toward the center of the Palin 10 to increase the strength of the bump 2. The second limiting surface 31 is provided with a groove 32 corresponding to the position of the bump ι 2, and the groove 32 extends along a fixed radius of the upper cover 3〇. Referring to FIG. 4 and FIG. 5 , according to the embodiment, the bump 112 is substantially rectangular parallelepiped and extends toward the upper cover 3 , and the top surface of the bump 112 and the first limiting surface 111 have a first height M. A limiting surface (1) and the 6: upper surface of the crucible have a second height h2', the first height center, at $=degree h2, so that the top surface of the protrusion 112 does not collide with the bottom surface of the groove 32. 6 to 8, the bump 112 is at a radial arc-width of the Palin 10, and the bump 112 has a second width along the Palin 10 = direction, and the second width w2 is greater than the first 3: This bump 112 can withstand greater shear stress. The groove has a fixed third width w3 in the direction of the * 30 ,, the first y = w1 is smaller than the third width w3, and since the groove 弧 extends along the upper cover to the machine 2 in a radius, thus When the rider turns the bicycle (10) = when the groove 32 moves relative to the projection 112 without interference. The ends of the ridges 32 along the arcuate direction of the upper cover 30 are defined as a mobile job 1 and a second stop 322 respectively. The bump 112 is limited to between the first stop and the second stop 322. ^ i 30 as the steering mechanism pivots and the Palin 1 〇 is fixed to the front tube 2, when the hemp turns the steering mechanism, the groove 32 and the bump 112 will generate a relative Japanese and when the first end 321 or the second The pivoting angle of the stop end 322 against the steering mechanism of the projection 112 is limited. The angle of rotation formed by the steering mechanism to move the convex rainbow 2 from the first end 321 to the second end 322 is the maximum pivot angle. The groove 32 is formed in a sector shape from the center of the upper cover 3G by the second end 322 of the first end 321 and the angle of the fan is defined as an extension angle A, which is rotated by the extension arc A. The maximum turning angle of the structure is not more than 18". According to this embodiment, the intermediate angle is less than 1°. Referring to FIG. 9 and FIG. 10, the second embodiment of the second embodiment of the present invention is the same as the first embodiment. 'No, the same feature is that the groove The first end stop 321 of the 32 and the second end end 322 are further extended along the arc direction of the upper $3〇, and the pocket 33 is respectively provided with a damping block %, and the reference is _ When the pivoting steering mechanism reaches the first stop 321 or the second end 322 of the bump 112, the damper block 34 can absorb the bump 112 and touch the first stop 321 or the second stop 322. The vibration, so that the rider can have a better riding experience. Referring to FIG. 12, which is a perspective exploded view of a third embodiment of the present invention, the third embodiment of the present invention is substantially the same as the first embodiment described above, except that the bump 112a is independently formed. - The limiting surface (1) is in contact with the front tube and has a card slot 113, and the protrusion U2a is embedded in the card slot 113. The separately formed bumps U2a help to maintain and repair the Palin 1 , and the different cypress bumps can be replaced as needed to fine tune the maximum pivot angle for riding. 11 to 14 are an exploded perspective view and a cross-sectional view of a fourth embodiment of the present invention. The fourth embodiment of the present invention is substantially the same as the first embodiment described above, except that the steering limit is The front head set, (t) 1 further includes an upper bowl 40, the upper bowl I set between the Palin 10 and the front official 2 'Rainbow 40 can be matched with different sizes of the front tube 2, so that Turn to the limit of the front of the headset (two) can her _ Palin 1G ruler for the front tube 2 of different sizes. Only the corpse/f greet stone, the best embodiment of the king π 剔 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The equal change _ 8 decoration should still be covered by this new patent. [Simple description of the drawings] 2) The first embodiment Fig. is a three-dimensional appearance of the front set of the headrest with the steering limit. The figure is an exploded perspective view of the first embodiment of the front set (2) with the steering limit. Figure 3: Another perspective exploded view of the first embodiment of the first set of steering heads (2). Figure 4, · This is a sketch of the creation - taken along line 4-4. Figure 5: Partially enlarged view of Figure 4 of the creation, showing that the bump* groove does not interfere. This is a cross-sectional view taken along line 6-6 of the creation of Figure 4. Fig. 7 is a schematic view showing the operation of the first embodiment of the first set of the steering head set (2) of the present invention, showing that the first end of the groove abuts against the bump. Figure 8 is a schematic view showing the operation of the first embodiment of the first set of the steering head set (2) of the present invention, showing that the second end of the groove abuts against the bump. Figure 9 is a perspective exploded view of the second embodiment of the front set (2) of the headrest with the steering limit. Figure 10················································· Figure XI. This is a schematic cross-sectional view of the second embodiment of the front-end headset (2). Figure 12: The three-dimensional exploded view of the third implementation of the M399829 example of the front-end headset set for the creation of the steering limit. Figure 13: An exploded perspective view of the fourth embodiment of the front set (2) of the headrest with the steering limit. Figure 14 is a cross-sectional view showing a fourth embodiment of the front set (2) of the headrest with a steering limit. [Main component symbol description] 1 headstock with steering limit (2) 10 Palin 101 First end 102 Second end 11 Palin frame 111 First limit surface 112 Bump 1121 Reinforced block 112a Bump 113 Card slot 12 Ball ring 13 Palin inner frame 14 Water ring 20 Bundle 30 Upper cover 31 Second limit surface 32 Groove 321 First stop end 322 Second stop end 33 Groove 34 Shock absorbing block 40 Upper bowl 2 Front tube 3 Straight pipe hi first height h2 second height wl first width w2 second width w3 third width A extension angle