1248899 玖、發明說明： 【發明所屬之技術領域】 本發明係關於二輪機車等所使用的鼓輪煞車式之手煞 車構造。 【先前技術】 以往，已在二輪機車等中除例如作為油壓式碟煞所構成 的行駛用煞車外，還具備機械式的手煞車構造。在如此之 手煞車構造中，具有於車輪之輪圈的輪轂部一體設有煞車 鼓，且在其内側具備煞車瓦的鼓輪煞車所構成者（例如，參 照專利文獻1 )。另一方面，還於輪圈之輪轂部一體設有行 駛用煞車的煞車碟之安裝部等，由該安裝部所包圍的部位 係用作為煞車鼓。 (專利文獻1 ) 日本專利特開平1 1 - 3 1 0 1 8 4號公報 【發明内容】 (發明所欲解決之問題） 但是，在上述習知手煞車中，在為提高車輛之行駛性能 而將行駛用煞車大型化的情況，連未能左右行駛性能的手 煞車也變得大型化。 本發明係鑒於上述問題而完成者，其目的在於，提供一 種可提高煞車尺寸之設定自由度且可謀求重量及成本之降 低的手煞車構造。 (解決問題之手段） 作為解決上述問題的手段，申請專利範圍第1項之發 5 312/發明說明書(補件)/93-09/93118939 1248899 明，係於車輪（例如，實施形態之後輪4 )與行駛用煞車（例 如，實施形態之後煞車6 )分開設置的鼓輪煞車式之手煞車 構造中，其特徵為：在形成於上述車輪輪圈（例如，實施形 態之輪圈3 2 )的凹部（例如，實施形態之凹部5 5 )内配置與 該輪圈為相異個體的煞車鼓（例如，實施形態之煞車鼓 51 )。 根據該構成，因為車輪之輪圈形狀與煞車鼓的形狀相互 不影響，因此可提高手煞車之煞車尺寸的設定自由度，同 時，還可提高輪圈形狀之自由度。 另外，利用相異個體構成輪圈及煞車鼓，可於輪圈及煞 車鼓產生互換性以提高通用性，同時，可提高材料之選擇 自由度。又，因為無必要於輪圈鑄入煞車鼓，因此使製造 輪圈及煞車鼓變得容易。 申請專利範圍第2項之發明，其特徵為：上述煞車鼓係 與上述輪圈可拆裝地支持於輪軸（例如，實施形態之後輪軸 30)上。 根據該構成，一方面將輪圈及煞車鼓分別安裝於輪軸 上，另一方面可從輪軸上個別拆下。 申請專利範圍第3項之發明，係於車輪（例如，實施形 態之後輪1 0 4 )與行駛用煞車（例如，實施形態之後煞車6 ) 分開設置的鼓輪煞車式之手煞車構造中，其特徵為：具備 與上述車輪輪圈（例如，實施形態之輪圈1 3 2 )為相異個體 的煞車鼓（例如，實施形態之煞車鼓1 5 1 )，上述煞車鼓係 與上述輪圈可拆裝地支持於上述車輪之輪軸（例如，實施形 6 312/發明說明書(補件)/93-09/93118939 1248899 態之後輪軸3 Ο )上。 根據該構成，因為車輪之輪圈形狀與煞車鼓的形狀相互 不影響，因此可提高手煞車之煞車尺寸的設定自由度，同 時，還可提高輪圈形狀之自由度。 另外，利用相異個體構成輪圈與煞車鼓，可於輪圈及煞 車鼓產生互換性以提高通用性，同時，可提高材料之選擇 自由度。又，因為無必要於輪圈鑄入煞車鼓，因此使製造 輪圈及煞車鼓變得容易。 而且，一方面將輪圈及煞車鼓分別安裝於輪軸上，另一 方面可從輪軸上個別拆下。 申請專利範圍第4項之發明，其特徵為：上述煞車鼓係 與上述輪圈一起呈鋸齒狀嵌合於上述輪軸上。 根據該構成，例如，與使用螺栓螺帽等將煞車鼓結合於 輪圈的情況比較，可以簡單的構成且緊湊地將煞車鼓與輪 軸結合為不可轉動狀。 【實施方式】 以下，參照圖式說明本發明之實施形態。 圖1所示二輪機車1係具有底板2之速可達型機車，在 其前輪3及後輪4分別作為行使用煞車而各設有構成為油 壓式碟煞的前煞車5及後煞車6。前輪3係軸支於前叉7， 前叉7係經由操縱桿軸8而可被操縱地固定支撐於車體框 架1 0的頭管1 1。在操縱桿軸8的上端部安裝有操縱桿1 2， 在該操縱桿1 2之左右把手部分別配設有作為後煞車6及前 煞車5之操作元件的煞車桿1 3、1 3。 7 312/發明說明書(補件)/93-09/93118939 1248899 車體框架1 0係具備從頭管1 1略朝後方延伸的主管1 4 及從頭管1 1略朝下方延伸後彎曲而接合於主管1 4的長邊 方向略中央的下降管15的所謂支架（cradle)型的構成。車 體框架1 0係藉由車罩1 6所同時覆蓋且支持此等。該車罩 1 6係具有内側罩1 6 a、前通風罩1 6 b及於前通風罩1 6 b朝 後下方連續延伸於後方的下罩部1 6 c，該車罩1 6之一部分 形成底板2。在車罩1 6之上部後側配設有車罩1 6内之物 品收納箱（未圖示）及形成為該物品收納箱的蓋部且可開關 之乘員用座塾17。 在車體框架1 0之後部經由連桿機構1 8可搖動地支撐搖 動單元2 0的前部。搖動單元2 0係一體構成設於其前部的 引擎2 1及設於後部的動力傳輸機構2 2者，在搖動單元2 0 的後部輸出軸連結有後輪4。又，元件符號2 2 A係收容動 力傳輸機構2 2的傳輸箱。在搖動單元2 0的後端部及車體 框架1 0的後端部之間配設有左右一對的後緩衝器2 3、2 3。 又，元件符號2 4為燃料箱，2 5為散熱器，2 6為空氣淨化 器，27為消音器。 如圖2所示，引擎2 1之曲柄箱2 1 A的後部左側係朝後 方延長，並藉由該延伸出的部分及傳輸蓋2 2 B形成收納動 力傳輸機構2 2的傳輸箱2 2 A。在傳輸箱2 2 A的後部右側安 裝有齒輪蓋2 8，於該齒輪蓋2 8經由箱側徑向滚動軸承 (r a d i c a 1 b a 1 1 b e a r i n g )(以下，稱為箱側軸承）3 1可旋轉 自如地支持有作為動力傳輸機構2 2之輸出軸的後輪軸 3 0。另外，在傳輸箱2 2 A的後部右方且引擎2 1的後方配置 8 312/發明說明書(補件)/93-09/93118939 1248899 有後輪4，利用將該後輪4及後輪軸3 0連結為不可轉動， 經由動力傳輸機構2 2將引擎2 1的驅動力傳輸給後輪4。 後輪4之輪圈3 2係由安裝有輪胎3 3的胎環部3 4、後輪 軸3 0貫穿之輪轂部3 5及渡過胎環部3 4與輪轂部3 5的碟 部3 6所構成一體的例如鋁鑄品。本實施形態中，碟部3 6 係設於從後輪4之左右方向中心（二輪機車1的車寬方向中 心）朝右方位移的位置，並且於右側方向突出形成凸圓弧 狀。 另外，位於碟部3 6之中央位置的輪轂部3 5，具備形成 為略呈圓筒狀且内緣部鑄入鐵製的輪圈套管37Α的輪轂本 體3 7 ;從輪轂本體3 7的右側滑順展開且連設於碟部3 6的 基座部3 8 ;從基座部3 8朝左側突出形成且安裝有車速檢 測裝置3 9之脈衝產生碟4 0的複數左側突起部4 1 ;及從基 座部3 8朝右側突出形成且安裝有後煞車6之煞車碟4 2的 複數右側突起部4 3。於各右側突起部4 3使用固定用螺栓 4 4固定著形成環狀的煞車碟4 2的内周附近的部位。同樣， 於各左側突起部4 1使用固定用螺釘4 5固定著形成環狀的 脈衝產生碟4 0的内周附近的部位。 貫穿輪轂部35而朝左方突出的後輪軸30的右端部，係 藉由輔助臂4 6而經由臂側徑向滾動軸承（以下，稱為臂側 軸承）4 7為可旋轉自如地支持。輔助臂4 6係將其前端部安 裝於曲柄箱2 1 Α的右側後部，且邊以後部朝右方位移之方 式彎曲為緩和的曲柄狀邊配置於後輪4的右邊。又，在輔 助臂4 6的右方配置有消音器2 7。輔助臂4 6的後部係配置 9 312/發明說明書(補件)/93-09/93118939 1248899 為從輪轂部3 5隔開指定的間隔，在輔助臂4 6與輪轂部、3 5 間的略中間位置，配置有支持於右側突起部4 3的煞車碟 42 〇 一併參照圖4進行說明，輔助臂4 6係在上下方向具有 寬幅的形狀，且朝其後方形成為於上下方向變窄的寬幅 狀。而且，輔助臂46係將其前端部的上下二處以螺栓固定 於曲柄箱2 1 A。又，在輔助臂4 6及傳輸箱2 2 A的後端部， 分別設有安裝各後緩衝器2 3、2 3的下端部用的連結部 2 3 A、2 3 A。在輔助臂4 6的側視為略中央部分形成有開口 4 6 a，且以面向該開口 4 6 a的方式配設有後煞車6的煞車卡 鉗4 8。於該輔助臂4 6固定有煞車卡鉗支架4 8 a，煞車卡鉗 4 8係經由該煞車卡鉗支架4 8 a安裝在輔助臂4 6上。 在齒輪蓋2 8的後方配置有車速檢測裝置3 9的脈衝產生 感測器4 9，且利用該脈衝產生感測器4 9檢測形成於脈衝 產生碟4 0的複數開縫之間隔以檢測車輪速度。於輔助臂 4 6及輪轂部3 5間設置作為二輪機車1的手煞車的功能的 鼓輪煞車5 0。 如圖3所示，鼓輪煞車5 0係具備不可轉動地安裝於後 輪軸3 0的煞車鼓5 1 ;及以可摩擦接觸於煞車鼓5 1的内周 的方式支持於輔助臂4 6的一對煞車瓦5 2、5 2。煞車鼓5 1 係將右側（車寬方向外側）開口的略有底圓筒狀的鐵製鼓本 體53;及插穿於該鼓本體53的底部中央的貫穿孔之圓筒 狀的相同鐵製鼓輪轂5 4結合為一體而形成者。貫穿孔係於 其周緣部形成有從鼓本體53的底部朝右方突出的圓筒壁 10 312/發明說明書(補件)/93-09/93118939 1248899 5 3 a，以該圓筒壁5 3 a之内周面與鼓輪轂5 4的外周面頂接 的狀態結合著鼓本體5 3及鼓輪轂5 4。 在此，各右側突起部4 3係於輪轂部3 5之周方向相互連 接形成，藉此，在輪轂部3 5右側形成有右側（車寬方向外 側）開口的略圓形的凹部5 5。鼓本體5 3係與凹部5 5大致 整合形成，以安裝於後輪軸3 0的狀態且將煞車鼓5 1保持 間隙收容於凹部5 5内。 於輔助臂4 6之臂本體5 6形成與後輪軸3 0同軸心的作 業孔5 7。又，該作業孔5 7係將輪圈3 2及煞車鼓5 1等固 定於後輪軸3 0用之後述的固定用螺帽5 8的放洩孔 (relierf hole)，是旋入工具的插入孔。另外，在輔助臂 4 6之左側設有從臂本體5 6朝輪轂部3 5側方向突出且於其 内周部保持臂側軸承4 7的臂側突起部5 9。 一併參照圖5進行說明，在臂側突起部5 9的徑方向外 側一體形成有支持鼓輪煞車5 0的各煞車瓦5 2用的基座部 6 0。亦即，基座部6 0係與輔助臂4 6設為一體。在該基座 部60設有成為各煞車瓦52的支軸的固定銷61，且可轉動 地支持應使各煞車瓦5 2摩擦接觸於煞車鼓5 1的内周而擴 開作動的凸輪軸6 2。藉由基座部6 0所支持的各煞車瓦5 2 係配置為面向煞車鼓51内。 凸輪軸6 2係朝右方向貫穿基座部6 0，在其貫穿部分不 可轉動地安裝有作動桿6 3。該作動桿6 3係經由纜線6 3 a 與手煞車操縱桿等的操作元件（省略圖示）聯繫。當操作該 操作元件時，藉由作動桿6 3驅動凸輪軸6 2，各煞車瓦5 2 11 312/發明說明書(補件)/93-09/93118939 1248899 擴開，摩擦接觸於煞車鼓5 1的内周。若在該狀態鎖住操作 元件的話，則保持為制動後輪4旋轉的狀態而發揮手煞車 功能。 在鼓本體5 3外壁之右側周緣部設有較輪轂部3 5的凹部 5 5的開口更向右方延伸，同時，經由段差擴張直徑的延長 部64。另一方面，於基座部60設有以在徑方向夾入延長 部6 4的方式所形成的折返部6 5。藉由此等延長部6 4及折 返部6 5形成所謂迷宮（1 a b y r i n t h )構造，使得在雨天行走 時之泥、砂等或後煞車6的襯墊磨耗粉等不易進入煞車鼓 5 1内。 在插入齒輪蓋2 8之後輪軸3 0的部位形成有蓋凸緣部 6 6，由該蓋凸緣部6 6的内周部保持箱側軸承3 1。在後輪 軸3 0形成從左側頂接於箱側軸承3 1的内輪的環狀段差部 6 7。另外，在蓋凸緣部6 6形成有從右側頂接於箱側轴承 31的外輪的内周突部68。輪轂部35之輪轂本體37左端經 由套管6 9頂接於箱側軸承31之内輪右側。又，煞車鼓5 1 之鼓輪轂5 4左端頂接於輪轂本體3 7右端。 在此，在後輪軸3 0的外周部與輪轂本體3 7的内周部及 鼓輪轂5 4的内周部分別刻設有相互對應的鋸齒。藉此，後 輪軸3 0與輪轂本體3 7 (輪轂部3 5 )及鼓輪轂5 4 (煞車鼓5 1 ) 係藉由呈鋸齒狀嵌合結合為不可轉動。亦即，與輪圈3 2 設為可拆裝的煞車鼓5 1係支持於後輪軸3 0。 臂側軸承4 7係較箱側軸承31直徑小，對應於此，後輪 軸3 0係在臂側軸承4 7的左側被縮小直徑。亦即，在後輪 12 312/發明說明書(補件)/93-09/93118939 1248899 軸3 0的右前端附近部位形成有縮小直徑部7 0。在 徑部7 0的前端部刻設有陽螺紋而與上述固定用螺1 接。 鼓輪轂5 4右端係與臂側軸承4 7的内輪左側頂接 軸承4 7的内輪右側係經由套管71頂接於固定用螺 亦即，在後輪軸3 0之環狀段差部6 7與固定用螺帽 間，於軸方向排列配置有箱側軸承31内輪、套管 轂部3 5、煞車鼓51、臂側軸承4 7内輪及套管71， 利用旋入固定用螺帽5 8固定於後輪軸3 0。又，於 4 6設有從左右頂接於臂側軸承4 7的外輪以限制軸 移動的固定用扣環72及内周突部73。 如上述，上述實施形態之手煞車構造，係於二輪 之後輪4與作為行駛用煞車的後煞奉6分別設置的 式，在形成於後輪4之輪圈32的凹部55内配置有 3 2相異個體的煞車鼓5 1，因此後輪4之輪圈形狀， 輪轂部3 5的形狀與煞車鼓5 1的形狀相互不影響。 言，為提高二輪機車1之行駛性能而將後煞車6設 化的情況，伴隨此構造，後輪4之輪圈3 2的輪穀4 使被擴大直徑，仍不致造成煞車鼓5 1的大型化。另 有為了將煞車鼓5 1抑制於適切的尺寸而將輪轂部 厚壁化等予以限制輪圈3 2之形狀的情況。 因此，可提高為手煞車之鼓煞車5 0之煞車尺寸（ 量）的設定自由度，同時還可提高輪圈32形狀之自 可實現依最適合之設計的重量及成本的降低。 312/發明說明書(補件)/93-09/93118939 縮小直 If 58 螺 ，臂側 帽5 8〇 58之 69、輪 此等係 輔助臂 方向的 機車1 鼓煞車 與輪圈 尤其是 具體而 為大型 印35即 外，沒 35形成 :煞車容 由度， 13 1248899 另外，利用相異個體構成輪圈3 2及煞車鼓5 1，可 圈3 2及煞車鼓5 1產生！換性以提高通用性，同時可 材料之選擇自由度。又，因為無必要於輪圈3 2鑄入煞 5 1，因此可容易製造輪圈3 2及煞車鼓5 1。 另外，上述手煞車構造，係將煞車鼓51與輪圈3 2 裝地支持於後輪軸3 0上，因此，一方面將輪圈3 2及 鼓5 1分別安裝於後輪軸3 0上，另一方面可從後輪軸 上個別拆下。因此可容易進行後輪4周圍的組裝及維 又，上述手煞車構造，煞車鼓51與輪圈3 2 —起呈 狀嵌合於上述後輪軸3 0上，因此，例如與使用螺栓螺 將煞車鼓5 1結合於輪圈3 2的情況相比較，可以簡單 成且緊湊地將煞車鼓5 1及後輪軸3 0結合為不可轉動 此，可在維持確實的煞車性能的基礎上，削減零件數 裝工作量，且抑制重量及成本。 以下，參照圖6說明本發明之第二實施形態。 本實施形態與上述第一實施形態比較，其在從輪圈 轂部廢棄右側突起部4 3及凹部5 5，及在於與輪圈相 體的煞車鼓上固定後煞車的煞車碟方面上具有差異。 對於對應上述第一實施形態的部分，則賦予相同的元 號，並省略其說明。 如圖6所示，二輪機車1 0 1之後輪1 0 4之輪圈1 3 2 轂部1 3 5，具備以從碟部3 6朝左方突出的方式而設， 鐵製的輪圈套管37A的輪轂本體37;由輪轂本體37 側滑順展開連接於碟部3 6的基座部3 8 ;及從基座部 312/發明說明書(補件)/93-09/93118939 於輪 提高 車鼓 可拆 煞車 30 護。 鋸齒 帽等 的構 〇因 及組 的輪 異個 又， 件符 的輪 鑄入 的右 38朝 14 1248899 左方突出形成且安裝有車速檢測裝置3 9的脈衝產生碟4 Ο 的複數左側突起部41。於各左側突起部4 1使用固定用螺 釘4 5固定著環狀的脈衝產生碟4 0的内周附近的部位。 在輔助臂4 6與輪轂部1 3 5間的略中間位置配置有煞車 碟4 2，對應於該煞車碟4 2之煞車卡鉗4 8，係設為面向輔 助臂4 6之開口 4 6 a狀（參照圖4)。然後，在輔助臂4 6與 輪轂部1 3 5間設有作為手煞車的鼓輪煞車1 5 0。 鼓輪煞車1 5 0具備：不可轉動地安裝於後輪軸3 0的煞 車鼓1 5 1 ;及以可摩擦接觸於煞車鼓1 5 1的内周的方式支 持於輔助臂4 6的一對煞車瓦5 2、5 2。煞車鼓1 5 1係例如 與輪圈1 3 2相同為鋁鑄品，係將形成為右側（車寬方向外側） 開口的略有底圓筒狀，且内周壁鑄入鐵製鼓本體153A的本 體部153;及以從本體部153的底部中央朝右方突出的方 式而設，鑄入鐵製鼓套管1 5 4 A的鼓輪轂部1 5 4，而形成為 一體者。 煞車鼓1 5 1的周邊壁1 4 3係於徑向設為厚壁，且於該周 邊壁1 4 3形成複數平行於對應煞車碟4 2之軸方向的螺帽 孔。藉此，煞車鼓1 5 1的周邊壁1 4 3成為煞車碟4 2之安裝 部，在以煞車碟4 2頂接於周邊壁1 4 3的右端的狀態，利用 旋入固定用螺栓4 4於各螺帽孔内，將煞車鼓1 5 1與煞車碟 42 —體結合。 在輔助臂4 6之左側，設有從臂本體5 6朝輪轂部1 3 5側 方向突出且於其内周部保持臂側軸承4 7的臂側突起部 5 9，在臂側突起部5 9附近配置有支持鼓輪煞車1 5 0的各煞 15 312/發明說明書(補件)/93-09/93118939 1248899 車瓦5 2用的環狀基座部16 0。基座部1 6 0係與輔助臂4 6 設為不同個體，且基座部160不可轉動地支持於輔助臂46 上。在該基座部1 6 0分別設有成為各煞車瓦5 2的支撐軸的 固定銷6 1，及使各煞車瓦5 2擴開作動的凸輪軸6 2。而藉 由基座部1 6 0所支持的各煞車瓦5 2係配置為面向煞車鼓 1 5 1内。又，在基座部1 6 0的外周部形成使水滴或異物較 難以進入煞車鼓1 5 1内用的突緣部1 6 5 A、1 6 5 Β。 在後輪軸3 0的外周部與輪轂本體3 7的内周部及鼓輪轂 部1 5 4的内周部，分別刻設有相互對應的鋸齒。藉此，後 輪軸3 0與輪轂本體3 7 (輪轂部1 3 5 )及鼓輪轂部1 5 4 (煞車 鼓151)係藉由呈鋸齒狀嵌合結合為不可轉動。亦即，與輪 圈3 2設為可拆裝的煞車鼓1 5 1係支持於後輪軸3 0。 在後輪軸3 0之環狀段差部6 7與固定用螺帽5 8之間， 於軸方向排列配置有箱側軸承31内輪、套管6 9、輪轂部 1 3 5、煞車鼓1 5 1、臂側軸承4 7内輪及套管7 1，此等係利 用旋入固定用螺帽5 8固定於後輪軸3 0。 如上述，上述第二實施形態之手煞車構造，係於二輪機 車1 0 1之後輪1 0 4與作為行駛用煞車的後煞車6分別設置 的鼓煞車式，具備與後輪1 0 4之輪圈1 3 2為相異個體的煞 車鼓1 5 1，該煞車鼓1 5 1係與輪圈1 3 2可拆裝地支持於後 輪軸3 0者，因此與上述第一實施形態相同，煞車鼓1 5 1 的形狀與輪圈1 3 2的形狀相互不影響，可提高手煞車之煞 車尺寸或輪圈1 3 2的形狀的設計自由度，可實現重量及成 本的降低。另外，可於輪圈1 3 2及煞車鼓1 5 1產生互換性 16 312/發明說明書(補件)/93-09/93118939 1248899 以提高通用性，同時可提高材料之選擇自由度。，而且可容 易進行後:輪1 0 4周圍的組裝及維護，且利用煞車鼓1 5 1與 後輪圈1 3 2 —起呈鋸齒狀嵌合於後輪軸3 0上，可在維持確 實的煞車性能的基礎上，削減零件數及組裝工作量，且抑 制重量及成本。 又，此發明並不限於上述實施形態，例如，在第一實施 形態中，也可為不連接各右側突起部4 3，亦即省略凹部5 5 全周内的一部份而構成，還可將固定於各煞車瓦5 2的襯料 (摩擦材料）設於煞車鼓51的内周。另外，煞車鼓51並不 限於鑄造品或鍛造品等的鐵製品，也可為其他可獲得同等 性能的金屬、強化樹脂、陶瓷等。又，在第二實施形態中， 若煞車鼓1 5 1本身為鐵製的話，則無鑄入鼓套管1 5 4 A或鼓 本體1 5 3 A的必要，可容易製造輪圈1 3 2及煞車鼓1 5 1。另 外，對於上述實施形態，左右交換輪圈3 2之碟部3 6的配 置或形狀或設為左右對稱使相等亦可，又，針對煞車碟4 2 或煞車卡鉗4 8的配置等也可同樣進行。另外，本發明不限 於速克達型的二輪機車，也可應用於三輪及四輪等的車輛。 (發明效果） 如上述說明，根據申請專利範圍第1項之發明，可提高 手煞車之煞車尺寸的設定自由度，同時還可提高輪圈形狀 之自由度，可實現依最適合之設計的重量及成本的降低。 另外，利用相異個體構成輪圈及煞車鼓，可使輪圈及煞 車鼓產生互換性以提高通用性，同時可提高材料之選擇自 由度。又，因為無必要於輪圈鑄入煞車鼓，因此可容易製 17 312/發明說明書(補件)/93-09/93118939 1248899 造輪圈及煞車鼓。 根據申請專利範圍第2項 鼓分別安裝於輪軸上，另一 此可容易進行車輪周圍的組 根據申請專利範圍第3項 尺寸的設定自由度，同時還 此可實現依最適合之設計的 另外，利用相異個體構成 車鼓產生互換性以提高通用 由度。又，因為無必要於輪 造輪圈及煞車鼓。 而且，一方面將輪圈及煞 方面可從輪軸上個別拆下， 裝及維護。 根據申請專利範圍第4項 湊地將煞車鼓及輪軸結合為 的煞車性能的基礎上，削減 重量及成本。 【圖式簡單說明】 圖1為本發明之實施形態 圖2為沿著圖1中之A — 圖3為圖2之要部的放大 圖4為從左側看圖2之要 圖5為從右側看圖2之要 之發明，一方面將輪圈及煞車 方面可從輪軸上個別拆下，因 裝及維護。 之發明，可提高手煞車之煞車 可提高輪圈形狀之自由度，因 重量及成本的降低。 輪圈及煞車鼓，可使輪圈及煞 性，同時可提高材料之選擇自 圈鑄入煞車鼓，因此可容易製 車鼓分別安裝於輪軸上，另一 因此可容易進行車輪周圍的組 之發明，可以簡單的構成且緊 不可轉動，因此可在維持確實 零件數及組裝工作量，且抑制 的二輪機車的側視圖。 A線所作的剖面圖。 構造圖。 部的側視圖。 部的側視圖。 18 312/發明說明書(補件)/93-09/93118939 1248899 圖6為本發明之第二實施形態 圖。 (元件符號說明） 1 二輪機車 2 底板 3 前輪 4 後輪 5 前煞車 6 後煞車 7 前叉 8 操縱桿軸 10 車體框架 11 頭管 12 操縱桿 13 煞車桿 14 主管 15 下降管 16 車罩 16a 内側罩 1 6b 前通風罩 16c 下罩部 17 乘員用座墊 18 連桿機構 20 搖動單元 312/發明說明書(補件)/93-09/93118939 之相當於圖3的放大、構造1248899 发明 发明 发明 发明 发明 发明 发明 发明 发明 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 [Prior Art] In the past, a two-wheeled vehicle or the like has a mechanical handcart structure in addition to a traveling brake constituted by, for example, a hydraulic disc. In the hand brake structure, the hub portion of the wheel rim is integrally provided with a brake drum, and the drum brake is provided on the inner side of the wheel (for example, refer to Patent Document 1). On the other hand, the mounting portion of the brake disc for driving the vehicle is integrally provided in the hub portion of the rim, and the portion surrounded by the mounting portion is used as a brake drum. (Patent Document 1) Japanese Patent Laid-Open Publication No. Hei No. Hei No. 1 - 3 1 0 1 8 4 (Attachment of the Invention) However, in the above-described conventional handcart, in order to improve the running performance of the vehicle When the size of the driving vehicle is increased, the size of the handcart that has not been able to drive the vehicle is also increased. The present invention has been made in view of the above problems, and it is an object of the invention to provide a handcart structure capable of improving the degree of freedom in setting the size of a brake and reducing the weight and cost. (Means for Solving the Problem) As a means for solving the above problem, the patent application No. 5 312/Invention Manual (Supplement)/93-09/93118939 1248899 is attached to the wheel (for example, the rear wheel 4 of the embodiment) A drum brake type hand brake structure provided separately from a traveling brake (for example, the brake 6 after the embodiment) is characterized in that it is formed on the wheel rim (for example, the rim 3 2 of the embodiment) In the recess (for example, the recess 5 5 in the embodiment), a brake drum (for example, the brake drum 51 of the embodiment) that is different from the rim is disposed. According to this configuration, since the shape of the rim of the wheel and the shape of the brake drum do not affect each other, the degree of freedom in setting the size of the brake of the handcart can be improved, and the degree of freedom of the shape of the rim can be improved. In addition, the use of different individuals to form the rim and the brake drum can create interchangeability between the rim and the brake drum to improve versatility and at the same time improve the freedom of choice of materials. Further, since it is not necessary to cast the brake drum on the rim, it is easy to manufacture the rim and the brake drum. The invention of claim 2 is characterized in that the brake drum and the rim are detachably supported on an axle (for example, the rear axle 30 after the embodiment). According to this configuration, on the one hand, the rim and the brake drum are respectively attached to the axle, and on the other hand, they can be individually removed from the axle. The invention of claim 3 is in a drum brake type hand brake structure provided separately from a wheel (for example, the rear wheel 1 0 4 of the embodiment) and a traveling brake (for example, the brake 6 after the embodiment), The utility model is characterized in that: the brake drum (for example, the brake drum 1 5 1 of the embodiment) is different from the wheel rim (for example, the rim 1 3 2 of the embodiment), and the brake drum and the rim can be The disassembly and assembly is supported on the axle of the above-mentioned wheel (for example, the implementation of the shape 6 312 / invention manual (supplement) / 93-09/93118939 1248899 state after the axle 3 Ο). According to this configuration, since the shape of the rim of the wheel and the shape of the brake drum do not affect each other, the degree of freedom in setting the size of the brake of the handcart can be improved, and the degree of freedom of the shape of the rim can be improved. In addition, the use of different individuals to form the rim and the brake drum can create interchangeability between the rim and the brake drum to improve versatility, and at the same time, improve the freedom of selection of materials. Further, since it is not necessary to cast the brake drum on the rim, it is easy to manufacture the rim and the brake drum. Moreover, on the one hand, the rim and the brake drum are respectively mounted on the axle, and on the other hand, they can be individually removed from the axle. The invention of claim 4 is characterized in that the brake drum is fitted to the wheel shaft in a zigzag manner together with the rim. According to this configuration, for example, in comparison with the case where the brake drum is coupled to the rim by using a bolt nut or the like, the brake drum and the axle can be coupled to each other in a non-rotatable shape with a simple configuration. [Embodiment] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The two-wheeled motor vehicle 1 shown in Fig. 1 has a speed-up type locomotive of the bottom plate 2, and each of the front wheel 3 and the rear wheel 4 is used as a row to drive the brakes, and each of the front brakes 5 and the rear brakes 6 configured as a hydraulic disc is provided. . The front wheel 3 is pivotally supported by the front fork 7, and the front fork 7 is operatively fixedly supported by the head pipe 11 of the vehicle body frame 10 via the joystick shaft 8. A lever 1 2 is attached to the upper end portion of the joystick shaft 8, and brake levers 13 and 13 which are operating elements of the rear brake 6 and the front brake 5 are disposed on the left and right handle portions of the joystick 12, respectively. 7 312/Invention Manual (Supplement)/93-09/93118939 1248899 The vehicle body frame 10 is provided with a main pipe 1 4 extending slightly rearward from the head pipe 1 1 and extending slightly downward from the head pipe 1 1 and then bent and joined to the main pipe A so-called cradle type configuration of the down tube 15 which is slightly centered in the longitudinal direction of 14. The body frame 10 is simultaneously covered by the car cover 16 and supports this. The vehicle cover 16 has an inner cover 16 a, a front hood 16 6 b, and a lower cover portion 16 c that continuously extends rearward and downward at a rear lower hood 1 6 b, and a part of the cover 16 is formed. Base plate 2. A product storage box (not shown) in the vehicle cover 16 and an occupant seat 17 that can be opened and closed are provided on the rear side of the upper portion of the vehicle cover 16 . The front portion of the rocking unit 20 is swingably supported via the link mechanism 18 at the rear of the body frame 10. The rocking unit 20 integrally constitutes the engine 2 1 provided at the front portion thereof and the power transmission mechanism 2 2 provided at the rear portion, and the rear wheel 4 is coupled to the rear output shaft of the rocking unit 20 . Further, the component symbol 2 2 A is a transmission case that houses the power transmission mechanism 2 2 . A pair of left and right rear shock absorbers 2 3 and 2 3 are disposed between the rear end portion of the rocking unit 20 and the rear end portion of the vehicle body frame 10 . Further, the component symbol 24 is a fuel tank, 25 is a heat sink, 26 is an air cleaner, and 27 is a muffler. As shown in FIG. 2, the rear left side of the crankcase 2 1 A of the engine 2 1 is extended rearward, and the transmission box 2 2 A accommodating the power transmission mechanism 2 2 is formed by the extended portion and the transmission cover 2 2 B. . A gear cover 2 8 is attached to the right side of the rear portion of the transmission box 2 2 A, and the gear cover 28 is passed through a box side radial rolling bearing (radica 1 ba 1 1 bearing) (hereinafter, referred to as a box side bearing) 3 1 . The rear axle 30 as the output shaft of the power transmission mechanism 22 is rotatably supported. In addition, on the right side of the rear of the transmission box 2 2 A and behind the engine 2 1 , 8 312 / invention manual (supplement) / 93-09 / 93118939 1248899 has a rear wheel 4, using the rear wheel 4 and the rear axle 3 The 0 link is not rotatable, and the driving force of the engine 2 1 is transmitted to the rear wheel 4 via the power transmission mechanism 2 2 . The rim 3 2 of the rear wheel 4 is a hub portion 3 5 through which the tire 3 3 is attached, a hub portion 35 through which the rear wheel shaft 30 penetrates, and a disk portion 36 that passes through the bead ring portion 34 and the hub portion 35. It is composed of, for example, an aluminum casting. In the present embodiment, the disk portion 36 is disposed at a position displaced rightward from the center in the left-right direction of the rear wheel 4 (center of the vehicle width direction of the two-wheeled vehicle 1), and protrudes in a convex arc shape in the right direction. Further, the hub portion 35 located at the center of the disk portion 36 has a hub body 37 which is formed in a substantially cylindrical shape and in which the inner edge portion is cast with a rim bush 37 Α made of iron; from the right side of the hub body 37 Smoothly expanding and connected to the base portion 38 of the disk portion 36; protruding from the base portion 38 toward the left side and mounting a plurality of left side protrusions 4 1 of the pulse generating disk 40 of the vehicle speed detecting device 39; And a plurality of right side protrusions 43 which are formed to protrude from the base portion 38 toward the right side and are attached to the brake disc 4 of the rear braker 6 . A portion near the inner circumference of the annular brake disc 4 2 is fixed to each of the right projections 43 by fixing bolts 44. Similarly, a portion near the inner circumference of the annular pulse generating disk 40 is fixed to each of the left side protrusions 4 1 by a fixing screw 45. The right end portion of the rear wheel axle 30 that protrudes leftward through the hub portion 35 is rotatably supported by the auxiliary arm 46 via an arm side radial rolling bearing (hereinafter referred to as an arm side bearing) 47. The auxiliary arm 46 is attached to the right rear portion of the crank case 2 1 Α, and is disposed on the right side of the rear wheel 4 with the crank-shaped side which is bent toward the right side and which is gently displaced. Further, a muffler 27 is disposed on the right side of the auxiliary arm 46. The rear arming arrangement of the auxiliary arm 46 is 312/inventive specification (supplement)/93-09/93118939 1248899 for a specified interval from the hub portion 35, between the auxiliary arm 46 and the hub portion, 35 In the intermediate position, the brake disc 42 supported by the right projection 4 is disposed. Referring to FIG. 4, the auxiliary arm 46 has a wide shape in the vertical direction and is formed to be narrowed in the up and down direction toward the rear. Wide. Further, the auxiliary arm 46 is bolted to the crank case 2 1 A at the upper and lower ends of the front end portion thereof. Further, at the rear end portions of the auxiliary arm 46 and the transmission case 2 2 A, connection portions 2 3 A and 2 3 A for attaching the lower end portions of the rear bumpers 23 and 23 are provided. An opening 46a is formed on the side of the auxiliary arm 46 as a slightly central portion, and the brake caliper 48 of the rear brake 6 is disposed to face the opening 46a. A brake caliper bracket 48 8 is fixed to the auxiliary arm 46, and the brake caliper 48 is attached to the auxiliary arm 46 via the brake caliper bracket 48a. A pulse generating sensor 4 9 of the vehicle speed detecting device 39 is disposed behind the gear cover 28, and the pulse detecting sensor 49 detects the interval of the plurality of slits formed in the pulse generating plate 40 to detect the wheel. speed. A drum brake 50 that functions as a handbrake of the second turbine 1 is provided between the auxiliary arm 46 and the hub portion 35. As shown in FIG. 3, the drum brake 50 is provided with a brake drum 5 1 that is non-rotatably attached to the rear axle 30; and is supported by the auxiliary arm 46 so as to be frictionally contacted with the inner circumference of the brake drum 51. A pair of brake shoes 5 2, 5 2. The brake drum 5 1 is an iron drum main body 53 having a slightly bottomed cylindrical shape that opens to the right side (outside in the vehicle width direction); and a cylindrical iron of the through hole that is inserted through the center of the bottom of the drum main body 53 The drum hubs 54 are integrated to form one. The through hole is formed at a peripheral portion thereof with a cylindrical wall 10 312 protruding from the bottom of the drum body 53 to the right/invention specification (supplement)/93-09/93118939 1248899 5 3 a, with the cylindrical wall 5 3 The state in which the inner peripheral surface of a is in contact with the outer peripheral surface of the drum hub 54 is combined with the drum body 53 and the drum hub 54. Here, each of the right projections 43 is formed to be connected to each other in the circumferential direction of the hub portion 35, whereby a substantially circular recess 55 having an opening on the right side (outside in the vehicle width direction) is formed on the right side of the hub portion 35. The drum main body 5 3 is formed integrally with the recessed portion 5 5 so as to be attached to the rear wheel axle 30 and to accommodate the brake drum 5 1 in the recess 55 5 with a gap therebetween. The arm body 56 of the auxiliary arm 46 forms a working hole 57 which is concentric with the rear wheel shaft 30. Further, the working hole 57 is a detaching hole for fixing the rim 3 and the brake drum 5 1 to the rear wheel shaft 30, which is a fixing nut 5 to be described later, and is a screw-in tool insertion. hole. Further, on the left side of the auxiliary arm 46, an arm-side protrusion portion 59 projecting from the arm main body 56 toward the boss portion 35 side and holding the arm-side bearing 47 at the inner peripheral portion thereof is provided. As will be described with reference to Fig. 5, a base portion 60 for supporting each of the brake shoes 52 of the drum locomotive 50 is integrally formed on the outer side in the radial direction of the arm-side projecting portion 59. That is, the base portion 60 is integrally formed with the auxiliary arm 46. The base portion 60 is provided with a fixing pin 61 that serves as a support shaft of each of the brake shoes 52, and rotatably supports a cam shaft that is to be frictionally contacted with the inner circumference of the brake drum 51 by the respective brake shoes 52. 6 2. Each of the brake shoes 5 2 supported by the base portion 60 is disposed to face the brake drum 51. The cam shaft 6 2 penetrates the base portion 60 in the right direction, and the actuating lever 63 is rotatably attached to the penetrating portion. The actuating lever 63 is associated with an operating element (not shown) such as a handbrake lever via a cable 6 3 a . When the operating element is operated, the cam shaft 6 2 is driven by the actuating lever 63, and each of the brake shoes 5 2 11 312/invention specification (supplement)/93-09/93118939 1248899 is expanded and frictionally contacted with the brake drum 5 1 The inner week. When the operating element is locked in this state, the hand brake function is maintained while the brake rear wheel 4 is rotated. An opening of the concave portion 55 of the hub portion 35 is provided on the right peripheral portion of the outer wall of the drum main body 5 3 to extend to the right, and the diameter extending portion 64 is expanded via the step. On the other hand, the base portion 60 is provided with a folded portion 65 formed to sandwich the extension portion 64 in the radial direction. By the extension portion 64 and the folding portion 65, a so-called labyrinth (1 a b y r i n t h ) structure is formed, so that mud, sand, or the like, which is worn during rainy days, or the pad wear powder of the rear brake 6, is less likely to enter the brake drum 51. A cover flange portion 6 is formed at a portion of the axle 30 after the gear cover 28 is inserted, and the box-side bearing 31 is held by the inner peripheral portion of the cover flange portion 66. The rear wheel shaft 30 forms an annular step portion 67 which is abutted against the inner wheel of the box side bearing 31 from the left side. Further, an inner peripheral projection 68 of the outer ring that is abutted against the box-side bearing 31 from the right side is formed in the cover flange portion 66. The left end of the hub body 37 of the hub portion 35 is connected to the right side of the inner wheel of the box side bearing 31 via a sleeve 69. Further, the left end of the drum hub 5 4 of the brake drum 5 1 is abutted to the right end of the hub body 37. Here, the outer peripheral portions of the rear wheel axle 30 and the inner peripheral portion of the hub body 37 and the inner peripheral portion of the drum hub 54 are respectively provided with serrations corresponding to each other. Thereby, the rear axle 30 and the hub body 37 (the hub portion 35) and the drum hub 5 4 (the brake drum 5 1) are non-rotatable by being zigzag-fitted. That is, the brake drum 51 that is detachable from the rim 3 2 is supported by the rear axle 30. The arm side bearing 47 is smaller in diameter than the box side bearing 31, and accordingly, the rear wheel shaft 30 is reduced in diameter on the left side of the arm side bearing 47. That is, the reduced diameter portion 70 is formed in the vicinity of the right front end of the shaft 30 in the rear wheel 12 312 / invention manual (supplement) / 93-09 / 93118939 1248899. A male screw is formed in the front end portion of the diameter portion 70, and is connected to the fixing screw 1. The right end of the drum hub 5 4 and the right side of the left side of the arm side bearing 47 are connected to the fixing screw via the sleeve 71, that is, the annular step portion 7 of the rear axle 30 and Between the fixing nuts, the inner side wheel of the box side bearing 31, the casing hub portion 35, the brake drum 51, the arm side bearing 47 inner wheel and the sleeve 71 are arranged in the axial direction, and are fixed by the screwing fixing nut 58. On the rear axle 3 0. Further, a fixing buckle 72 and an inner circumferential projection 73 for restricting the movement of the shaft from the left and right of the arm-side bearing 47 are provided. As described above, the handbrake structure of the above-described embodiment is provided in the second rear wheel 4 and the rear door 6 as the traveling brake, and is disposed in the recess 55 formed in the rim 32 of the rear wheel 4. The brake drum 5 1 of the different individual is thus in the shape of the rim of the rear wheel 4, and the shape of the hub portion 35 does not affect the shape of the brake drum 51. In other words, in order to improve the running performance of the two-wheeled vehicle 1, the rear brake 6 is set. With this configuration, the dam of the rim 3 of the rear wheel 4 is enlarged in diameter, and the large diameter of the brake drum 5 1 is not caused. Chemical. In addition, in order to suppress the size of the brake drum 51 to a suitable size, the thickness of the hub portion is limited, and the shape of the rim 3 2 is restricted. Therefore, it is possible to increase the degree of freedom in setting the size (quantity) of the brakes for the handcuffs of the handcuffs, and at the same time, it is possible to increase the weight of the rim 32 and achieve a reduction in weight and cost according to the most suitable design. 312/Invention Manual (Supplement)/93-09/93118939 Reduce the straight If 58 screw, the arm side cap 5 8〇58 69, the wheel of the locomotive 1 in the direction of the auxiliary arm, especially the drum and the rim Large-scale printing 35 is outside, no 35 is formed: the capacity of the car, 13 1248899 In addition, using different individuals to form the rim 3 2 and the brake drum 5 1, the ring 3 2 and the brake drum 5 1 are produced! Transmutability to improve versatility, while at the same time the freedom of choice of materials. Further, since it is not necessary to cast the crucible 5 1 into the rim 3 2, the rim 3 2 and the brake drum 5 1 can be easily manufactured. In addition, the above-described handcart structure supports the brake drum 51 and the rim 3 2 on the rear axle 30. Therefore, on the one hand, the rim 3 2 and the drum 5 1 are respectively mounted on the rear axle 30, and On the one hand, it can be removed individually from the rear axle. Therefore, the assembly and the resurfacing of the rear wheel 4 can be easily performed. In the above-described handcart structure, the brake drum 51 and the rim 32 are fitted to the rear wheel axle 30 in a formwise manner, and therefore, for example, the brake is used. In comparison with the case where the drum 5 1 is combined with the rim 3 2, the brake drum 5 1 and the rear axle 30 can be combined to be non-rotatable in a simple and compact manner, and the number of parts can be reduced while maintaining accurate braking performance. Load workload and suppress weight and cost. Hereinafter, a second embodiment of the present invention will be described with reference to Fig. 6 . Compared with the above-described first embodiment, this embodiment differs in that the right side protrusion portion 43 and the recess portion 5 5 are discarded from the rim hub portion, and the brake disc of the vehicle is fixed on the brake drum of the rim body. . The same reference numerals are given to the portions corresponding to the first embodiment, and the description thereof will be omitted. As shown in Fig. 6, the second locomotive 1 0 1 rear wheel 1 0 4 rim 1 3 2 the hub portion 1 3 5 is provided to protrude from the disk portion 36 to the left, and the iron rim casing The hub body 37 of the 37A; the base portion 38 connected to the dish portion 36 by the hub body 37 side; and the vehicle from the base portion 312 / invention manual (supplement) / 93-09/93118939 The drum can be detached and the car is protected. The structure of the serrated cap or the like is different from that of the group, and the right side of the wheel cast into the right side of the wheel is formed by the left side of the wheel to the 14 1248899 and is mounted with the pulse detecting plate of the vehicle speed detecting device 39. 41. A portion near the inner circumference of the annular pulse generating disk 40 is fixed to each left side protrusion portion 4 1 by a fixing screw 45. A brake disc 4 2 is disposed at a slightly intermediate position between the auxiliary arm 46 and the hub portion 135, and the brake caliper 4 8 corresponding to the brake disc 4 2 is disposed to face the opening of the auxiliary arm 46. (Refer to Figure 4). Then, a drum brake 150 as a handcart is provided between the auxiliary arm 46 and the hub portion 135. The drum brake 150 includes: a brake drum 1 5 1 that is non-rotatably attached to the rear axle 30; and a pair of brakes that are supported by the auxiliary arm 46 in such a manner as to be frictionally contacted with the inner circumference of the brake drum 1 51 Watt 5 2, 5 2. The brake drum 1 5 1 is, for example, an aluminum casting similar to the rim 1 3 2 , and is formed in a slightly bottomed cylindrical shape that is open to the right side (outside in the vehicle width direction), and the inner peripheral wall is cast into the iron drum main body 153A. The main body portion 153 is provided so as to protrude from the center of the bottom portion of the main body portion 153 toward the right side, and the drum hub portion 154 of the iron drum sleeve 1 5 4 A is cast and formed integrally. The peripheral wall 1 4 3 of the brake drum 1 5 1 is formed to have a thick wall in the radial direction, and the peripheral wall 14 3 forms a plurality of nut holes parallel to the axial direction of the corresponding brake disc 4 2 . As a result, the peripheral wall 148 of the brake drum 151 becomes the attachment portion of the brake disc 4 2, and the screw 4 4 is screwed in the state where the brake disc 4 2 is in contact with the right end of the peripheral wall 143. The brake drum 1 51 is integrally coupled to the brake disc 42 in each nut hole. On the left side of the auxiliary arm 46, an arm-side projection 5 that protrudes from the arm body 56 toward the hub portion 135 side and holds the arm-side bearing 47 at its inner peripheral portion is provided on the arm-side projection 5 In the vicinity of 9, there are arranged 煞15 312/invention manual (supplement)/93-09/93118939 1248899 supporting the drum wheel brake 150. The base portion 160 is set to be different from the auxiliary arm 46, and the base portion 160 is non-rotatably supported on the auxiliary arm 46. The base portion 160 is provided with a fixing pin 161 for supporting the support shaft of each of the brake shoes 52, and a cam shaft 62 for expanding the respective brake shoes 52. Further, each of the brake shoes 52 supported by the base portion 160 is disposed to face the brake drum 1 51. Further, the outer peripheral portion of the base portion 160 is formed with flange portions 1 6 5 A and 1 6 5 使 for making it difficult for water droplets or foreign matter to enter the inside of the brake drum 1 51. The outer peripheral portion of the rear wheel axle 30, the inner peripheral portion of the hub body 37, and the inner peripheral portion of the drum hub portion 154 are respectively provided with serrations corresponding to each other. Thereby, the rear axle 30 and the hub body 37 (the hub portion 135) and the drum hub portion 154 (the brake drum 151) are non-rotatable by being zigzag-fitted. That is, the brake drum 1 51 that is detachable from the rim 3 2 is supported by the rear axle 30. Between the annular step portion 67 of the rear axle 30 and the fixing nut 58, the inner wheel of the box side bearing 31, the sleeve 6.9, the hub portion 135, and the brake drum 1 5 1 are arranged side by side in the axial direction. The arm side bearing 47 inner wheel and the sleeve 7 1 are fixed to the rear wheel shaft 30 by a screwing fixing nut 58. As described above, the handbrake structure of the second embodiment described above is a drum type provided separately from the rear wheel 1 0 of the second turbine 10 1 and the rear brake 6 as the traveling brake, and is provided with the wheel of the rear wheel 104. The ring 1 3 2 is the brake drum of the different individual 1 5 1 , and the brake drum 1 5 1 and the rim 1 3 2 are detachably supported by the rear axle 30, so the brake is the same as the first embodiment described above. The shape of the drum 1 5 1 and the shape of the rim 1 3 2 do not affect each other, and the design freedom of the brake size of the hand brake or the shape of the rim 1 32 can be improved, and weight and cost can be reduced. In addition, interchangeability 16 312 / invention specification (supplement) / 93-09/93118939 1248899 can be produced on the rim 1 3 2 and the brake drum 1 5 1 to improve versatility and at the same time increase the freedom of choice of materials. And it can be easily carried out: assembly and maintenance around the wheel 104, and the jig drum 1 151 and the rear rim 1 3 2 are jagged on the rear wheel axle 30, which can be maintained. Based on the performance of the brakes, the number of parts and the amount of assembly work are reduced, and the weight and cost are suppressed. Further, the present invention is not limited to the above-described embodiment. For example, in the first embodiment, the right side protrusions 4 3 may not be connected, that is, a part of the entire circumference of the recesses 5 5 may be omitted. A lining (friction material) fixed to each of the brake shoes 52 is provided on the inner circumference of the brake drum 51. Further, the brake drum 51 is not limited to an iron product such as a cast product or a forged product, and may be other metals, reinforcing resins, ceramics, or the like which can obtain equivalent properties. Further, in the second embodiment, if the brake drum 15 1 itself is made of iron, there is no need to cast the drum casing 1 5 4 A or the drum body 1 5 3 A, and the rim 1 3 2 can be easily manufactured. And the brake drum 1 5 1. Further, in the above-described embodiment, the arrangement or shape of the disk portion 36 of the right and left exchange rims 3 2 may be equal to the left and right symmetry, and the arrangement of the brake disc 4 2 or the brake caliper 48 may be the same. get on. Further, the present invention is not limited to a two-wheeled vehicle of the Scooton type, and can also be applied to a vehicle of three or four wheels. (Effect of the Invention) As described above, according to the invention of the first aspect of the patent application, the degree of freedom in setting the size of the brake of the handcart can be improved, and the degree of freedom of the shape of the wheel can be improved, and the weight of the most suitable design can be realized. And the cost is reduced. In addition, the use of different individuals to form the rim and the brake drum can make the rim and the brake drum interchangeable to improve versatility and improve the material's freedom of choice. Moreover, since it is not necessary to cast a brake drum on the rim, it is easy to manufacture the rim and the brake drum of the invention manual (supplement)/93-09/93118939 1248899. According to the second item of the patent application scope, the drums are respectively mounted on the axles, and the other one can easily set the degree of freedom of the group around the wheel according to the size of the third item of the patent application, and at the same time, the other suitable design can be realized. The use of different individuals to form a drum produces interchangeability to increase the universality. Also, because it is not necessary to make a rim and a brake drum. Moreover, on the one hand, the rim and the cymbal can be individually removed, installed and maintained from the axle. According to item 4 of the scope of the patent application, the weight and cost are reduced based on the combination of the brake drum and the axle. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an embodiment of the present invention. FIG. 2 is an enlarged view along the line A of FIG. 1 and FIG. 3 is an enlarged view of the main part of FIG. 2. FIG. 2 is a view from the left side of FIG. Looking at the invention of Fig. 2, on the one hand, the rim and the brake can be individually removed from the axle, due to the installation and maintenance. The invention can improve the brake of the handcart and increase the degree of freedom of the rim shape due to the reduction in weight and cost. The rim and the brake drum can make the rim and the rim, and at the same time, the material selection can be increased from the ring into the brake drum, so that the brake drum can be easily mounted on the axle, and the other can easily carry out the group around the wheel. According to the invention, since it can be easily configured and can not be rotated, the side view of the two-wheeled vehicle can be suppressed while maintaining the number of components and the amount of assembly work. Sectional view made by line A. structure map. Side view of the department. Side view of the department. 18 312/Invention Manual (Supplement)/93-09/93118939 1248899 FIG. 6 is a view showing a second embodiment of the present invention. (Component symbol description) 1 Two-wheeled vehicle 2 Base plate 3 Front wheel 4 Rear wheel 5 Front brake 6 Rear brake 7 Front fork 8 Joystick shaft 10 Body frame 11 Head tube 12 Joystick 13 Brake rod 14 Main pipe 15 Down pipe 16 Car cover 16a Inner cover 1 6b Front hood 16c Lower cover 17 Passenger seat cushion 18 Link mechanism 20 Shake unit 312 / Invention manual (supplement) / 93-09/93118939 Equivalent to the enlargement and construction of Figure 3
19 1248899 21 引擎 2 1 A 曲柄箱 22 動力傳輸機構 22 A 傳輸箱 2 2 B 傳輸蓋 23 後緩衝器 23 A 連結部 24 燃料箱 25 散熱器 26 空氣淨化器 27 消音器 2 8 齒輪蓋 3 0 後輪軸 31 箱側徑向滾動軸承（箱側軸承） 32 輪圈 33 輪胎 34 胎環部 3 5 輪穀部 36 碟部 37 輪轂本體 37A 輪圈套管 38 基座部 39 車速檢測裝置 40 脈衝產生碟 2019 1248899 21 Engine 2 1 A Crankcase 22 Power transmission mechanism 22 A Transmission box 2 2 B Transmission cover 23 Rear buffer 23 A Connection 24 Fuel tank 25 Radiator 26 Air purifier 27 Silencer 2 8 Gear cover 3 0 Axle 31 Box side radial rolling bearing (box side bearing) 32 Rim 33 Tire 34 Ring portion 3 5 Groove portion 36 Disc portion 37 Hub body 37A Rib bushing 38 Base portion 39 Vehicle speed detecting device 40 Pulse generating disc 20
312/發明說明書(補件)/93-09/93118939 1248899 41 左側突起部 42 煞車碟 43 右側突起部 44 固定用螺栓 4 5 固定用螺釘 46 輔助臂 46a 開口 4 7 臂側徑向滚動軸承（臂側軸承） 48 煞車卡鉗 48a 煞車卡鉗支架 4 9 脈衝產生感測器 50 鼓輪煞車 5 1 煞車鼓 5 2 煞車瓦 5 3 鼓本體 53a 圓筒壁 54 鼓輪轂 5 5 凹部 56 臂本體 5 7 作業孔 58 固定用螺帽 5 9 臂側突起部 60 基座部 6 1 固定銷 21312/Invention Manual (Supplement)/93-09/93118939 1248899 41 Left side protrusion 42 Brake disc 43 Right side protrusion 44 Fixing bolt 4 5 Fixing screw 46 Auxiliary arm 46a Opening 4 7 Arm side radial rolling bearing ( Arm side bearing) 48 Brake caliper 48a Brake caliper bracket 4 9 Pulse generation sensor 50 Drum wheel brake 5 1 Brake drum 5 2 Brake tile 5 3 Drum body 53a Cylinder wall 54 Drum hub 5 5 Recess 56 Arm body 5 7 Operation Hole 58 fixing nut 5 9 arm side protrusion 60 base part 6 1 fixing pin 21
312/發明說明書(補件)/93-09/93118939 1248899 6 2 凸輪軸 63 作動桿 63a 纜線 64 延長部 65 折返部 66 蓋凸緣部 6 7 環狀段差部 68 内周突部312/Invention Manual (Repair)/93-09/93118939 1248899 6 2 Camshaft 63 Actuator 63a Cable 64 Extension 65 Foldback 66 Cover flange 6 7 Annular section 68 Inner circumference
6 9 套管 7 0 縮小直徑部 71 套管 7 2 固定用扣環 73 内周突部 101 二輪機車 104 後輪6 9 Sleeve 7 0 Reduced diameter section 71 Sleeve 7 2 Retaining clasp 73 Inner peripheral projection 101 Second locomotive 104 Rear wheel
1 35 輪轂部 143 周邊壁 150 鼓輪煞車 151 煞車鼓 153 本體部 1 5 3 A 鼓本體 154 鼓輪轂部 1 54A 鼓套管 22 312/發明說明書(補件)/93-09/93118939 1248899 1 60 基座部 1 6 5 A 突緣部 1 6 5 B 突緣部1 35 Hub portion 143 Peripheral wall 150 Drum brake 151 Brake drum 153 Main body 1 5 3 A Drum body 154 Drum hub 1 54A Drum bushing 22 312 / Invention manual (supplement) / 93-09/93118939 1248899 1 60 Base portion 1 6 5 A flange portion 1 6 5 B flange portion
312/發明說明書(補件)/93-09/93118939 23312/Invention Manual (supplement)/93-09/93118939 23