經濟部智慧財產局貝工消費合作社印製 44 04 8 8 A7 _ B7__ 五、發明說明（1 ) 【發明之詳細說明】 【發明之所屬技術領域】 本發明係有關適用於攜帶用之氣動式工具等氣動式馬 達，特別是關於可以簡化構造，使加工成本降低、且輕量 化的氣動式馬達。 【先前之技術】 參照第4圖對以往之氣動式馬達的構造做進一步的詳 細說明，第4圖係顯示以往較爲大家所熟知之雙面氣動式 馬達（reversible air motor)的斷面圖（美國特許第 2 7 1 5 8 8 9 號）。 在第4圖，氣動式馬達具有圓筒狀的馬達外殼51( motor housing )，在此馬達外殻5 1裡配置有導葉 5 2。此導葉5 2，如圖所示係由一體零件所構成，在該 中心部之偏心位置形成孔5 3，形成有複數個與此孔5 3 連通之入口埠5 5 a、5 5 b ( inletport) '排氣埠5 6 (exhaust port )。在位於導葉5 2之偏心位置的孔5 3裡 面配置真空套管5 9 (bulb sleeve)(以下統稱汽缸）， 此汽缸5 9係藉由彈簧夾5 7 ( spring clip )和螺絲5 8 被壓制在導葉內使可以轉動。在汽缸5 9裡面，與馬達外 殼5 1之中心軸同心配置有旋轉部6 0 ( rotor )，在旋轉 部6 0 |等間隔地配置有朝遠心方向露出的4片隔板6 1 。然後將此旋轉部6 0與輸出軸等銜接，使可以適用於攜 帶用之氣動式工具等之氣動式馬達。 -4 -___ 本紙張尺度適用中國國家標準（CNS)A4規格（210x 297公釐） --J ! I------* 裝！ _|1 訂----1!^. {請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 4 4 0 4 8 8 a7 ___B7___ 五、發明說明（2 ) 在此氣動式馬達的圖示狀態下，將空氣從入口埠 5 5 a導入隔板6 1之間時，透過該空氣壓，會使圖中之 旋轉部6 0朝逆時針方向旋轉，驅動輸出軸，另外，使馬 達外殻5 1從圖示位置對導葉5 2相對地回轉時，則會將 來自於另一邊之入口埠5 5 b的空氣導入隔板6 1之間， 使旋轉部6 0朝與上述相反的方向旋轉。由於此種馬達的 動作係和係和以往之氣動式馬達的動作相同，所以在此省 略其動作之詳細說明。 【發明欲解決之課題】 但是，與一般之氣動式馬達相同地，上述之氣動式馬 達係如上述，係在導葉之零件內部加工配置有汽缸插著用 的偏心孔，因此必須花費偏心孔的加工時間。此外，由於 導葉之外形形狀及偏心孔的加工作業要求高度的加工精密 度·所以有導業之製造成本極高的問題。並且，由於導葉 係環繞構成在汽缸之圓周上方，所以要使零件輕量化非常 不容易。 有鑑於此，本發明的目的係爲了解決上述之問題點， 提供一種藉由在上述馬達外殼內偏心配置圓筒狀汽缸，在 馬達外殼的內壁面與汽缸的外壁面之間所形成之弦月狀空 間裡配置樹脂製的導葉，來廢止上述在零件內部設置偏心 孔的導葉，達到簡化機械加工，並使氣動式馬達趨於輕量 化，且成本降低的氣動式馬達。 . 本發明係在圓筒狀馬達外殼內偏心配置由管等所構成 — ____ 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） --I I-------- -裝 i!! — 訂-！-線 (請先閱讀背面之注意事項再填寫本頁) 烴濟部智慧財產局員工消费合作社印製 44 〇4 8 8 A7 _B7______ 五、發明說明（3 ) 之圓筒狀汽缸，在馬達外殼的內壁與偏心配置之圓筒狀汽 缸的外壁之間所形成的空間裡配置樹脂製的導葉，在上述 導葉形成一個可以使來自於馬達外殻之導入埠的空氣連通 汽缸側之導入孔的通路，在該通路的出入口周圍配置封條 維持通路之氣密性的同時，由於藉由上述封條的彈力將汽 缸壓向在馬達外殼的內壁面，可以達到汽缸定位的功效， 所以本發明之氣動式馬達，不必要求高度的加工精密度， 可以大幅降低氣動式馬達的製造成本。並且，由於導業係 爲部份構造，可以使用樹脂成形輕易製成，所以不但可以 使成本降低，而且還可以達到輕量化的目的。 【-解決課題之方法】 爲達到上述目的，本發明之氣動式馬達所採用之技術 解決方法，其特徵爲，係在構成氣動式馬達之本體內偏心 配置由上下底板挾住的圓筒狀汽缸，在上述本體內壁與上 述汽缸的外壁之間所形成的空間配置導葉 > 在導葉形成一 個可以使來自於本體之導入埠的空氣連通汽缸側之導入孔 的通路，在該通路的出入口周圍配置可以維持通路之氣密 性的封條。 【實施形態】 以下，將參照圖面就本發明之氣動式馬達的構造做詳 細說明，第1圖係爲使用本發明之氣動式馬達之氣動式磨 光機（air Sander )的平面斷面圖，第2圖係爲正面斷面圖 _____-R-__ 本紙張尺度適用中國國家標準<CNS)A4規格（210 X 297公釐〉 --- I--II--I ! ----1 ---訂---I----- (請先閲讀背面之法$事項再填寫本頁} 經濟部智慧財產局昊工消費合作社印製 440488 A7 ____B7_ 五、發明說明（4 ) ，第2圖係爲氣動式馬達之分解圖。 在圖中，1爲氣動式馬達之本體（馬達外殼），如第 1圖所顯示的，在此馬達外殻1的側面一體形成有壓縮空 氣的導入埠2,及排氣埠3« 另外’在馬達外殻1內部，如第2圖、第3圖所顯示 的’成上下分開配置有第1底板5及第2底板6，挾在這 些底板5、6之間對馬達外殼1成偏心狀態配置汽缸9， 在此汽缸9裡利用閘門環（lock ring )與馬達外殼1成同 心狀固定配置旋轉部7。這個時候，汽缸9係藉由連接形 成於兩底板5、6之圓周段部5 a、6 a的一端而被固定 住。在此汽缸9裡與馬達外殼1成同心狀配置旋轉部7， 而固定旋轉部7的旋轉軸8 ( rotor shaft )係透過設在兩底 板5、6的軸承8A、8B ( bearing )被軸支著。汽缸9 係由指定口徑之管等裁成指定長度，在指定部位形成空氣 的導入孔2。 在旋轉部7朝圓周方向等間隔地，且可以朝旋轉部7 之遠心方向自由露出地設置5片隔板7A，使個隔板7A 的前端1與汽缸9的內壁面成氣密狀態且可以自由轉動地 連接。另外，在偏心配置於馬達外殻1之圓筒狀汽缸9與 馬達外殼1之間所形成的空間1 〇配置有使汽缸9在馬達 外殼1內部維持偏心狀態的導葉1 1。 在導葉11，如第1圖、第3圖所顯示的，形成有一 個可以將來自於馬達外殼1之導入埠2的空氣供給旋轉部 7的通路1 3 ’在馬達外殼1與導葉1 1之間，以及在導 本紙張尺度適用中國國家標準（CNS)A4規格（210x 297公釐） 1 — I I Ί--- - 裝---- - - 訂 f請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消费合作社印製 -T40488 A7 B7 五、發明說明（5 ) 葉1 1與汽缸9之間之通路1 3的周圍配置封條1 3 a、 13b，藉由這些封條13a、13b，來維持形成在導 葉1 1之通路1 3之入口側周圍及出口側周圍的氣密狀態 。此外，由於上述封條13a、13b本身具有彈性，藉 由該彈力可以發揮將汽缸9壓向馬達外殼1內壁面的功能 ，來達到馬達外殼1內之汽缸9的定位功效。這個時候， 形成於導葉1 1之上下的突起1 3 b、1 3 c係插著在底 板5、6的接合孔5b、6b，同時，與圓周段部的5a 、6 a的一端連接固定。 在上述底板5、6形成有將導入汽缸9裡面的空氣經 由設在汽缸9之導入孔1 2排出汽缸外的排出溝1 2 a， 並且，使形成於汽缸9與馬達外殻1之間的空間1 0與排 氣埠3連通，使來自於底板5、6之排出溝1 2a所被排 出的空氣，從排氣埠3被排出去，藉由如此構成氣動式馬 達A Μ » 在固定在上述旋轉部7之旋轉軸8的端部，經由動力 傳達裝置1 4安裝硏磨零件1 5，動力傳達裝置1 4的輸 出軸16，係朝旋轉軸8成一定尺寸偏心設置。因此，可 以使硏磨零件15—邊朝旋轉軸8周圍移動一邊快速轉動 。上述硏磨零件1 5係在圓盤狀的墊板1 5 a下面安裝硏 磨紙1 5 b所構成。 在馬達外殻1的導入埠2設有透過藉由開關桿17( switch lever )被壓制的杆（r〇d，圖中無顯示）而可以打 開及關閉的活門1 8 ( valve )，當壓下開關桿17時，活 _ -fl - _ — 本紙張尺度適用中國國家標準（CNS)A4規格（21CU297公釐） — — — — — — — — — — — — — . I I I I I J I ^^ .11111 ^^^ (請先閲讀背面之注意事項再填寫本頁) ^^0488 ^^0488 經濟部智慧財產局員工湞費合作社印製 A7 __B?_ 五、發明說明（6 ) 門1 8會打開將來自於導入埠2，從位於導葉1 1之通路 1 3經過導入孔1 2到達連接氣動式馬達AM之旋轉部7 之通路的壓縮空氣供給氣動式馬達AM。此外，當開關桿 1 7打開時，活門1 8會關閉遮住上述空氣通路，則壓縮 空氣就不會被烘給氣動式馬達AM，氣動式馬達AM就不 會產生動作。在排氣埠3，可以拆卸式地安裝有一端連接 排氣埠3之流路1 9 a及另一端具有消音零件1 9 b的排 氣管 1 9 ( muffler )。 接下來針對上述構成之氣動式磨光機的動作進行說明 〇 當操作者壓下第2圖下方所顯示之開關桿1 7時，透 過杆活門18會打開連通從導入埠2到氣動式馬達AM的 空氣通路，使壓縮空氣經由通路1 3從導入孔1 2被供給 至氣動式馬達AM。當氣動式馬達AM回轉時，經由動力 傳達裝置1 4使圓盤狀的墊板1 5 a的中心會一邊朝氣動 式馬達AM之輸出軸周圍移動一邊快速轉動，藉由安裝在 墊板1 5 a下面的硏磨紙1 5 b來硏磨被硏磨物。而來自 於氣動式馬達AM的排氣空氣會通過形成在底板5、6的 排氣溝1 2 a ，再經由汽缸9與馬達外殼1之間的空間 10,從排氣管19被排出去。 然而，由於上述氣動式硏磨機內之氣動式馬達，係將 導葉部分配置在偏心設置在馬達外殼1內之圓筒狀汽缸與 其之間的空間，所以不但可以簡化氣動式馬達的構造，並 且可以達到輕量化的目的 _______ _ 本紙張尺度適用中國國家標準（CNS)A4規格（210x 297公釐> ------^----!1_ 裝------- - 訂----- !線 (請先閱讀背面之注意事項再填寫本頁) Α7 σ4 g 8 Β7_ 五、發明說明（7 ) (請先閱讀背面之注意事項再填寫本頁) 以上，雖然係針對使用本發明之氣動式馬達之氣動式 磨光機的實施例做說明，但是本發明之氣動式馬達也適用 於其他各種工具，此外•隔板（spacer)的材質並不限於 樹脂材質，也可以使用鋁材利用壓鑄等形成'另外，利用 裁剪管的作業即可以輕鬆進行汽缸的製造。 此外，在不脫離本發明之精神及其主要特徵的範圍裡 ，可以廣泛地將本發明實施於各種形態，還有，上述之實 施例只是範例說明，並非限定的解釋。 【發明之效果】 經濟部智慧財產局3工消費合作社印製 由於透過上述詳細說明之本發明，係在馬達外殼內偏 心配置圓筒狀汽缸，在馬達外殼的內壁與偏心配置之圓筒 狀汽缸的外壁之間所形成的空間裡配置導葉，所以不但可 以簡化氣動式馬達的構造，並且可以達到輕量化的目的。 此外，由於在導葉形成一個可以使來自於馬達外殼之導入 埠的空氣連通汽缸側之導入孔的通路，在該通路的周圍配 匱有封條維持通路之氣密性，透過封條本身的彈力可以發 揮將汽缸壓向在馬達外殼之內壁面側的功能，所以可以達 到汽缸定位的功效。其結果，促使本發明之導葉，不需要 像以往的氣動式馬達必須要求高度的加工精密度，所以可 以大幅降低氣動式馬達的製造成本。並且，由於導業可以 使用樹脂等來成形製造，所以不但可以使成本降低，而且 還可以達到輕量化的目的等，其發明之效果極佳= 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） -10. 4404 8 8 A7 經濟部智慧財產局負工消費合作社印製 B7 五、發明說明（8 ) 【圖面之簡單說明】 第1圖係爲使用本發明之氣動式馬達之氣動式磨光機 的平面斷面圖（第2圖中之B — B斷面圖）。 第2圖係爲使用本發明之氣動式馬達之氣動式磨光機 的正面斷面圖（第1圖中之A — A斷面圖）。 第3圖係爲本發明之氣動式馬達的分解斜視圖。 第4圖係爲以往之氣動式馬達的斷面圖。 【符號之說明】 1 馬達外殼（本體） 2 導入埠 3 排氣埠 4 吸塵用埠 5、6 底板 7 旋轉部 8 旋轉軸 9 汽缸 10 空間 11 導葉 12 導入孔 12a 排出溝 13 通路 14 動力傳達裝置 15 硏磨零件 本纸張尺度適用中國國家標準（CNS)A4規格（210x 297公釐） I I I -----I I I i r -------I ^---I I I I I r (請先閱讀背面之注意事項再填寫本頁) -11 - Q4 8 a A7 B7 五、發明說明（9 ) 15a 墊板 15b 硏磨紙 1 6 輸出軸 17 開關桿 1 8 活門 (請先閱讀背面之注意事項再填寫本頁) 裝----I---訂----I I---線' 經濟部智慧財產局員工消費合作社印製 本紙張灵度適用中S國家標準（CNS)A4規格（210 X 297公釐）Printed by Shelley Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs 44 04 8 8 A7 _ B7__ V. Description of the invention (1) [Detailed description of the invention] [Technical field to which the invention belongs] The present invention relates to a pneumatic tool suitable for carrying Equivalent to pneumatic motors, and more particularly to pneumatic motors that can simplify the structure, reduce processing costs, and reduce weight. [Previous technology] Referring to Fig. 4, the structure of the conventional air motor will be further described in detail. Fig. 4 is a cross-sectional view showing a reversible air motor that is more commonly known in the past ( US Patent No. 2 7 1 5 8 8 9). In FIG. 4, a pneumatic motor has a cylindrical motor housing 51, and a guide vane 52 is arranged in the motor housing 51. The guide vane 5 2 is composed of an integral part as shown in the figure, and a hole 5 3 is formed at an eccentric position of the center portion, and a plurality of inlet ports 5 5 a and 5 5 b are formed to communicate with the hole 5 3 ( inletport) 'Exhaust port 5 6 (exhaust port). A vacuum sleeve 5 9 (collectively referred to as a cylinder hereinafter) is disposed in the hole 5 3 located at the eccentric position of the guide vane 5 2. The cylinder 5 9 is covered by a spring clip 5 7 (spring clip) and a screw 5 8 Squeezed inside the guide vanes to enable rotation. Inside the cylinder 59, a rotating portion 60 (rotor) is arranged concentrically with the central axis of the motor casing 51, and four rotating plates 61 are arranged at equal intervals and exposed in the telecentric direction. Then, this rotating part 60 is connected to an output shaft, etc., so that it can be applied to a pneumatic motor such as a pneumatic tool for carrying. -4 -___ This paper size applies to China National Standard (CNS) A4 (210x 297 mm) --J! I ------ * Pack! _ | 1 Order ---- 1! ^. {Please read the notes on the back before filling this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 4 4 0 4 8 8 a7 ___B7___ V. Description of the Invention (2) In the illustrated state of this pneumatic motor, when air is introduced from the inlet port 5 5 a into the partition 61, the air pressure will cause the rotating part 60 in the figure to rotate counterclockwise to drive the output. In addition, when the motor housing 5 1 is relatively rotated from the position shown in the figure to the guide vane 5 2, the air from the other inlet port 5 5 b is introduced between the partition plates 6 1 to make the rotating part. 6 0 rotates in the opposite direction to the above. Since the operation system and system of this motor are the same as those of conventional air motors, detailed descriptions of the operation are omitted here. [Problems to be Solved by the Invention] However, like the general air motor, the above-mentioned air motor is as described above, and the eccentric hole for inserting the cylinder is processed and arranged in the parts of the guide vane, so the eccentric hole must be used. Processing time. In addition, since the processing of the outer shape of the guide vane and the eccentric hole requires a high degree of machining accuracy, there is a problem that the manufacturing cost of the guide is extremely high. In addition, since the guide vane is formed around the circumference of the cylinder, it is very difficult to reduce the weight of the parts. In view of this, an object of the present invention is to solve the above-mentioned problems, and to provide a chord formed between the inner wall surface of the motor casing and the outer wall surface of the cylinder by arranging the cylindrical cylinder eccentrically in the motor casing. Resin guide vanes are arranged in the shape space to abolish the guide vanes provided with eccentric holes inside the parts, to achieve simplified mechanical processing, and to reduce the weight of the air motor and reduce the cost of the air motor. The present invention is constituted by a tube or the like eccentrically arranged in a cylindrical motor housing. ____ This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) --I I ------- --装 i !! — Order-! -Line (Please read the precautions on the back before filling this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Hydrocarbons 44 〇 4 8 8 A7 _B7______ V. Description of the invention (3) The cylindrical cylinder is in the motor casing. A guide vane made of resin is arranged in a space formed between the inner wall and the outer wall of the eccentrically arranged cylindrical cylinder. The guide vane forms an introduction hole through which air from the introduction port of the motor casing can communicate with the cylinder side. In the passage, a seal is arranged around the entrance and exit of the passage to maintain the airtightness of the passage, and because the cylinder is pressed against the inner wall surface of the motor casing by the elastic force of the seal, the effect of positioning the cylinder can be achieved. Type motor, it is not necessary to require a high degree of processing precision, which can greatly reduce the manufacturing cost of an air type motor. In addition, since the guide system is partly constructed and can be easily made using resin molding, it can not only reduce costs, but also achieve weight reduction. [-Method for solving the problem] In order to achieve the above-mentioned object, the technical solution for the pneumatic motor of the present invention is characterized in that a cylindrical cylinder eccentrically arranged by the upper and lower bottom plates is arranged eccentrically in the body of the pneumatic motor. A guide vane is arranged in a space formed between the inner wall of the main body and the outer wall of the cylinder. A guide passage is formed in the guide vane so that the air from the introduction port of the body can communicate with the introduction hole on the cylinder side. A seal is installed around the entrance and exit to maintain the airtightness of the passage. [Embodiment] Hereinafter, the structure of the pneumatic motor of the present invention will be described in detail with reference to the drawings. The first figure is a plan sectional view of an air sander using the pneumatic motor of the present invention. , Figure 2 is a frontal sectional view _____- R -__ This paper size is applicable to the Chinese National Standard < CNS) A4 specification (210 X 297 mm) --- I--II--I! --- -1 --- Order --- I ----- (Please read the law on the back of the page before completing this page} Printed by Hao Gong Consumer Cooperative, Bureau of Intellectual Property, Ministry of Economic Affairs, 440488 A7 ____B7_ V. Description of Invention (4) Figure 2 is an exploded view of the pneumatic motor. In the figure, 1 is the body (motor housing) of the pneumatic motor. As shown in Figure 1, compressed air is integrally formed on the side of the motor housing 1. Inlet port 2 and exhaust port 3 «In addition, inside the motor casing 1, as shown in Figs. 2 and 3, the first base plate 5 and the second base plate 6 are arranged separately from each other. A cylinder 9 is arranged between the bottom plates 5 and 6 in an eccentric state with respect to the motor casing 1, and a lock ring is used to concentrically fix the motor casing 1 in the cylinder 9 The rotating part 7 is fixedly arranged. At this time, the cylinder 9 is fixed by connecting one end of the circumferential sections 5 a and 6 a formed on the two bottom plates 5 and 6. Here, the cylinder 9 is concentric with the motor housing 1. The rotating part 7 is arranged, and the rotating shaft 8 (rotor shaft) of the fixed rotating part 7 is supported by the shafts through the bearings 8A and 8B (bearing) provided on the two bottom plates 5 and 6. The cylinder 9 is cut by a pipe of a specified diameter, etc. Into a specified length, an air introduction hole 2 is formed at a specified position. Five rotating partitions 7A are provided in the rotating portion 7 at equal intervals in the circumferential direction and can be exposed freely in the telecentric direction of the rotating portion 7. The front end 1 and the inner wall surface of the cylinder 9 are connected in an air-tight state so as to be freely rotatable. In addition, a space 10 formed between the cylindrical cylinder 9 and the motor casing 1 which is eccentrically arranged in the motor casing 1 is provided with an actuator. The cylinder 9 maintains an eccentric guide vane 11 inside the motor casing 1. As shown in Figs. 1 and 3, a guide vane 11 is formed to supply air from the inlet port 2 of the motor casing 1. The path 1 3 ′ of the rotating part 7 is between the motor housing 1 and the guide vane 1 1 , And the paper size of this guide applies the Chinese National Standard (CNS) A4 specification (210x 297 mm) 1 — II Ί ----Loading ------Order f Please read the precautions on the back before filling this page ) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs-T40488 A7 B7 V. Description of the invention (5) Seals 1 3a, 13b are arranged around the path 1 3 between the leaves 11 and the cylinder 9, and by these seals 13a, 13b to maintain the airtight state formed around the entrance side and the exit side of the passage 13 of the guide vane 11. In addition, since the seals 13a and 13b are elastic, the elastic force can exert the function of pressing the cylinder 9 against the inner wall surface of the motor casing 1, thereby achieving the positioning effect of the cylinder 9 in the motor casing 1. At this time, the protrusions 1 3 b and 1 3 c formed above and below the guide vane 1 1 are inserted into the engaging holes 5 b and 6 b of the base plates 5 and 6 and are connected and fixed to one end of the circumferential section 5 a and 6 a. . The bottom plates 5 and 6 are formed with exhaust grooves 12a for exhausting the air introduced into the cylinder 9 through the introduction holes 12 provided in the cylinder 9. The exhaust grooves 12a formed between the cylinder 9 and the motor casing 1 are formed. The space 10 communicates with the exhaust port 3, so that the air exhausted from the exhaust grooves 12a of the bottom plates 5 and 6 is exhausted from the exhaust port 3, and the air motor AM is configured in this way. The end of the rotating shaft 8 of the rotating portion 7 is provided with honing parts 15 through the power transmitting device 14, and the output shaft 16 of the power transmitting device 14 is eccentrically disposed at a certain size toward the rotating shaft 8. Therefore, the honing part 15 can be rapidly rotated while moving toward the periphery of the rotation shaft 8. The honing part 15 is constructed by mounting a honing paper 15 b under a disc-shaped pad 15 a. The inlet port 2 of the motor housing 1 is provided with a valve 18 (valve) that can be opened and closed through a lever (rod (not shown)) that is suppressed by a switch lever 17 (switch lever). When the switch lever 17 is lowered, the _ -fl-_ — This paper size applies to the Chinese National Standard (CNS) A4 specification (21CU297 mm) — — — — — — — — — — — — — — IIIIIJI ^^ .11111 ^ ^^ (Please read the notes on the back before filling out this page) ^^ 0488 ^^ 0488 Printed by the staff of the Intellectual Property Bureau of the Ministry of Economic Affairs and Cooperatives A7 __B? _ V. Description of the invention (6) Door 1 8 will be opened will come from In the introduction port 2, the compressed air from the passage 13 located in the guide vane 11 through the introduction hole 12 to the passage connected to the rotary portion 7 of the air motor AM is supplied to the air motor AM. In addition, when the switch lever 17 is opened, the shutter 18 is closed to cover the air passage, and the compressed air is not dried to the air motor AM, and the air motor AM does not operate. At the exhaust port 3, an exhaust pipe 19 (muffler) having a flow path 19a connected to the exhaust port 3 and a muffler 19b at the other end is detachably installed. Next, the operation of the pneumatic grinder with the above structure will be described. When the operator depresses the switch lever 17 shown below the second figure, the lever valve 18 will open and communicate from the introduction port 2 to the pneumatic motor AM. The compressed air is supplied to the air motor AM from the introduction hole 12 through the passage 13. When the air motor AM rotates, the center of the disc-shaped pad 15 a is rotated rapidly around the output shaft of the air motor AM through the power transmission device 14, and is mounted on the pad 15 aThe honing paper 1 5 b is used for honing the object to be honed. Exhaust air from the air motor AM passes through the exhaust grooves 12a formed in the bottom plates 5, 6 and is discharged through the exhaust pipe 19 through the space 10 between the cylinder 9 and the motor casing 1. However, since the air motor in the above-mentioned air honing machine is configured with the guide vane part in the space between the cylindrical cylinder and the cylinder which is eccentrically disposed in the motor casing 1, not only the structure of the air motor can be simplified, And can achieve the purpose of light weight _______ _ This paper size applies Chinese National Standard (CNS) A4 specifications (210x 297 mm > ------ ^ ----! 1_ equipment ------- -Order -----! Line (please read the precautions on the back before filling this page) Α7 σ4 g 8 Β7_ V. Description of the invention (7) (Please read the precautions on the back before filling this page) Above, though The embodiment of the pneumatic grinder using the pneumatic motor of the present invention is explained, but the pneumatic motor of the present invention is also applicable to various other tools. In addition, the material of the spacer is not limited to the resin material. It can also be formed by die-casting using aluminum materials. In addition, the cylinder can be easily manufactured by the operation of cutting the tube. In addition, the present invention can be widely implemented in the scope without departing from the spirit and main characteristics of the present invention. Various forms, Yes, the above-mentioned embodiments are only examples and are not limited explanations. [Effects of the invention] Printed by the Ministry of Economic Affairs and the Intellectual Property Bureau, 3 Industrial Consumer Cooperative. As the present invention described in detail above, the cylinder is eccentrically arranged in the motor housing. In the cylinder, guide vanes are arranged in the space formed between the inner wall of the motor casing and the outer wall of the eccentrically arranged cylindrical cylinder, so not only can the structure of the air motor be simplified, but also the weight can be achieved. A passage is formed in the guide vane to allow the air from the inlet port of the motor casing to communicate with the cylinder-side introduction hole. A seal is installed around the passage to maintain the airtightness of the passage. The elasticity of the seal itself can play a role in connecting the cylinder. The function of pressing on the inner wall surface side of the motor casing can achieve the effect of positioning the cylinder. As a result, the guide vanes of the present invention do not require a high degree of machining precision as in conventional air motors, and can be greatly reduced. The manufacturing cost of pneumatic motors, and the resin can be used for molding as the guide Manufacturing, so that not only can reduce costs, but also achieve the purpose of light weight, etc., the effect of its invention is very good = this paper size applies Chinese National Standard (CNS) A4 specification (210 X 297 mm) -10. 4404 8 8 A7 Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperatives, B7 V. Description of the invention (8) [Simplified description of the drawing] Figure 1 is a plane cross section of a pneumatic grinder using the pneumatic motor of the present invention Figure (B-B sectional view in Figure 2). Figure 2 is a front sectional view of a pneumatic sander using the pneumatic motor of the present invention (A-A sectional view in Figure 1). Figure 3 is an exploded perspective view of the pneumatic motor of the present invention. Figure 4 is a sectional view of a conventional pneumatic motor. [Description of symbols] 1 Motor housing (main body) 2 Inlet port 3 Exhaust port 4 Dust collection port 5, 6 Base plate 7 Rotating part 8 Rotating shaft 9 Cylinder 10 Space 11 Guide vane 12 Inlet hole 12a Drain groove 13 Path 14 Power transmission Device 15 Honed parts This paper size applies to Chinese National Standard (CNS) A4 (210x 297 mm) III ----- III ir ------- I ^ --- IIIII r (Please read first Note on the back then fill out this page) -11-Q4 8 a A7 B7 V. Description of the invention (9) 15a Pad 15b Honing paper 1 6 Output shaft 17 Switch lever 1 8 Valve (Please read the precautions on the back before (Fill in this page) Install ---- I --- Order ---- I I --- line 'Printed on this paper by the Intellectual Property Bureau of the Ministry of Economic Affairs's Consumer Cooperatives, the paper's agility is applicable to the National Standards (CNS) A4 specification ( 210 X 297 mm)