六、發明說明： 【發明所屬之技術領域】 本發明係與氣動工具結構有關，特別是指一種具有改 良消音裝置之氣動工具》 【先前技術】 按，氣動工具之運作原理係以高壓氣體來帶動氣動工 具内部之氣動馬達運轉，因此氣動工具必須具有—供氣體 進入之進氣口與一供氣體排出之排氣口，而—般氣動工具 之排氣孔ML sf可分為將氣體導引向後方排出之設計，以及 將氣體導引向側方排出之設計，然而，當氣體直接由氣動 工具之外部排出時，都將會產生有相當之噪音。 而以後方排出氣體之設計而言，如第9圖所示，當氣 體由氣動工具1後方的多數排氣孔2排出時，其所排出之 氣體將會觉各排氣孔2之間的支架4阻擋而使氣體相立碰 撞導致亂流，並進而產生排氣噪音；再者，由氣動工具1 後方所排出之氣體更會因直接衝擊於接設在氣動工異丄後 端之快速接頭3上，而導致排氣噪音提高且產生尖銳之刺 耳聲音。 另如第10圖所示，係為習用具有側向排氣孔之氣動 工具1 A，其雖可避免所排出之氣體直接衝擊接設在氣動 工具後鈿之快速接頭上（圖中未示），然而，此種開設於氣 動工具1A—侧之排氣孔2A係設計成格網狀，因此當氣 1355993 體集中由一側之排氣孔2A排出時，將會與上述具有後方 排氣孔設計之氣動工具相同’造成所排出之氣體會受多數 相鄰排氣孔2 A_支架4 A影響而使氣體產生亂流進而 互相撞擊，並因而產生尖銳之風切聲。 而不論以後方或側方排出氣體之氣動工具，雖皆會於 該氣動工具内部加裝消音棉，但經過測試其頂多僅能將氣 動工具於廢氣排出時之噪音值降至8 2分貝（deci_BeU， dB)左右，而仍無法有效降低氣體排出所產生之尖銳噪音， 因此如何改善此一問題’即為本發明所欲解決之首要課題。 【發明内容】 本發明之主要目的，係在於提供一種具有改良消音裝 置之氣動工具，其具有可使氣動工具所排出之廢氣不會直 接衝擊於接設於氣動工具後端之快速接頭上，並藉此以可 有效降低因氣流衝撞所產生之噪音現象。 為達前述之目的，本發明係提供一種具有改良消音裝 置之氣動工具，其包含有： 一機殼本體，係呈f空狀，且該機殼本體後端具有一 供高壓氣體輸入之軸向螺孔； 一氣動馬達，係設於該機殼本體内部，而一氣動開關 §又於該氣動馬達一側，且由該螺孔所輸入之高壓氣體係受 該氣動開關控制以帶動該氣動馬達運轉，而該氣動馬達於 1355993 運轉後所產生之廢氣再由該機殼本體後端排出； - 一承座，係為環狀座體，且該承座内設有一擋璧，該 - 承座係以其擋壁而抵頂於該機殼本體後端，並於該擋壁之 中央位置設有一軸向穿孔，另於該穿孔周圍設有複數軸向 通孔； ， 一蓋體，係蓋合並定位於該承座上，且於該蓋體之中 央位置設有一軸向穿設口； 鲁一導引件，係呈環狀並具有一小徑端以及一大徑端， 且於該導引件形成有一由該小徑端至該大徑端逐漸外擴之 導引段，而該小徑端更延伸出一小徑段，且該導引件係以 其小徑段穿設於該蓋體之穿設口中，並於該導引件之導引 段與該穿設口之間形成有一環形的排風空間； 一進氣接頭，其具有一頭部以及一身部，並於該頭部 與身部之間形成有一肩部，而該進氣接頭係以其身部依序 φ 穿過該導引件、該穿設口與該穿孔再接設於該螺孔中，且 該進氣接頭接設於該螺孔中時，該導引件係以其小徑段對 -應套接於該進氣接頭之身部上，且該進氣接頭之肩部係可 擋止於該導引件之導引段。 當然，本發明在某些另件上，或另件之安排上容許有 所不同，但所選用之實施例，則於本說明書中，予以詳細 說明，並於附圖中展示其構造。 【實施方式】 5 1355993 :首先請參閱第1圖至第3圖’本發明所提供之一種具 有改良消音裝置之氣動工具，其主要由一機殼本體i工、 一氣動馬達2 1、一承座31、一蓋體41、一導弓丨件5 1以及一進氣接頭6 1所構成’其中： 該機殼本體11，係呈中空管狀，且於該機殼本體工 1後端1 2係具有一可供局塵氣體輸入之轴向螺孔1 ^。 該氣動馬達2 1，係軸向設置於該機殼本體i丄内 部，而一氣動開關2 2係設於該氣動馬達2 1—側，且由 該螺孔1 3所輸入之高壓氣體係受該氣動開關2 2控制以 決定是否帶動該氣動馬達2 1開始運轉，而該氣動馬達2 1於運轉後所產生之廢氣則再由該機殼本體1 1後端工2 排出。 該承座3 1 ’係為環狀座體，且該承座3 1係以其一 端而塞設於該機殼本體1 1之後端1 2中，該承座3 1内 緣係設有一擋壁3 2，且該承座3 1係以其擋壁3 2而抵 頂於該機殼本體1 1之螺孔1 3外周圍上，並於該撞壁3 2之中央位置係設有一轴向穿孔3 3，而該穿孔3 3係與 該螺孔1 3呈相對設置，且於該穿孔3 3周圍更設有複數 個可供廢氣通過之轴向通孔3 4，而該承座3 1於遠離該 機殼本體11之另一端外緣上係形成有一呈環狀之凹部3 該蓋體41，具有一卡部42，且該卡部4 2係可對 6 1355993 應卡合於該承座3 1之凹部3 5上，以令該蓋體4工得固 •定於該承座3 1上，而該蓋體41之中央位置設有一軸向 穿設口 4 3 ,且該蓋體41於設有該穿設口 4 3之一端係 形成有一逐漸朝向該穿設口 4 3收縮之導流面4 4，並於 該穿設口 4 3周圍另環設有複數個呈尖錐狀且朝該承座3 1方向延伸之抵頂部4 5。 該導引件5 1，係呈環狀並具有一小徑端5 2以及一 • 大徑端5 3，並於該導引件5 1外侧形成有一由該小徑端 5 2至該大徑端5 3逐漸外擴之導引段5 4，且該小徑端 5 2更延伸出一小徑段5 2 χ，而該導引件5丄係以其小 徑段5 2 1穿設於該蓋體4丄之穿設口4 3中，並於該環 形導引件5 1之導引段5 4與該穿設口4 3之間係形成有 一環形的排風空間5 5。 該進氣接頭6 1，其係具有一頭部6 2以及一具有螺 • 紋之身部6 3，且於該頭部6 2與該身部6 3之間係形成 .有一肩部64,並於該肩部64與該身部63之間更形成 -有一抵壓部65’而該進氣接頭61係以其身部63依序 穿過該導引件5 1、該穿設口43與該穿孔3 3再接設於 該螺孔1 3中’且該進氣接頭6 1接設於該螺孔1 3中 時，該導引件5 1係以其小徑段5 2 1而對應套接於該進 氣接頭6 1之身部63上，且該進氣接頭6 1之肩部6 4 7 1355993 係可擋止於該導引件51大徑端5 3以防止該導引件5 1 脫出，而該抵壓部6 5則壓抵於該承座3 1穿孔3 3之外 周圍上，藉此以迫緊該承座31並固定於該機殼本體1 1 之後端1 2。 接著請繼續參閱第4圖，本發明於實際運作時，係於 該進氣接頭61上接設有一用以連接高壓氣體管路與該進VI. Description of the Invention: [Technical Field] The present invention relates to a pneumatic tool structure, and more particularly to a pneumatic tool having an improved sound absorbing device. [Prior Art] Press, the working principle of the pneumatic tool is driven by high pressure gas. The air motor inside the pneumatic tool runs, so the pneumatic tool must have an air inlet for the gas to enter and a gas outlet for the gas to be exhausted, and the vent ML sf of the pneumatic tool can be divided into guiding the gas The rear discharge design and the design to direct the gas to the side, however, will generate considerable noise when the gas is directly discharged from the outside of the pneumatic tool. In the design of the rear exhaust gas, as shown in Fig. 9, when the gas is discharged from the plurality of exhaust holes 2 behind the pneumatic tool 1, the gas discharged therefrom will sense the bracket between the exhaust holes 2. 4 blocking and causing the gas to collide and causing turbulence, and then generating exhaust noise; further, the gas discharged from the rear of the pneumatic tool 1 is directly impacted by the quick joint 3 connected to the rear end of the pneumatic work. Up, resulting in increased exhaust noise and a sharp, harsh sound. As shown in Fig. 10, it is a pneumatic tool 1 A having a lateral venting hole, which can prevent the discharged gas from directly impacting on the quick joint of the pneumatic tool (not shown). However, the vent hole 2A opened on the side of the pneumatic tool 1A is designed to be lattice-shaped, so that when the gas 1355993 is concentrated by one side of the vent hole 2A, it will have a rear vent with the above. The pneumatic tools are designed to be the same 'causing the exhausted gas to be affected by the majority of adjacent vents 2 A_bracket 4 A to cause the gas to turbulently collide with each other and thus produce a sharp wind cut. Regardless of whether the pneumatic tool that exhausts the gas at the rear or the side is equipped with a sound-absorbing cotton inside the pneumatic tool, at least it can only reduce the noise value of the pneumatic tool when the exhaust gas is exhausted to 8 2 decibels ( Deci_BeU, dB) is still unable to effectively reduce the sharp noise generated by gas discharge, so how to improve this problem is the primary problem to be solved by the present invention. SUMMARY OF THE INVENTION The main object of the present invention is to provide a pneumatic tool having an improved sound absorbing device, which has an exhaust gas that can be discharged from a pneumatic tool without directly impacting a quick joint attached to a rear end of the pneumatic tool, and Thereby, the noise phenomenon caused by the airflow collision can be effectively reduced. To achieve the foregoing objective, the present invention provides a pneumatic tool having an improved sound absorbing device, comprising: a casing body having an empty shape, and a rear end of the casing body having an axial direction for inputting a high pressure gas a screw hole; a pneumatic motor is disposed inside the casing body, and a pneumatic switch § is on the side of the air motor, and the high-pressure gas system input by the screw hole is controlled by the pneumatic switch to drive the air motor Operation, and the exhaust gas generated by the air motor after the operation of the 1355993 is discharged from the rear end of the casing body; - a seat is a ring seat, and the seat is provided with a dam, the seat Abutting against the rear end of the casing body with its retaining wall, and providing an axial through hole at a central position of the retaining wall, and a plurality of axial through holes around the through hole; The combination is positioned on the socket, and an axial insertion opening is disposed at a central position of the cover body; the guide member is annular and has a small diameter end and a large diameter end, and is guided by the guide The lead member is formed from the small diameter end to the large diameter end gradually Expanding the guiding section, and extending the small diameter section to the small diameter section, and the guiding member is disposed in the opening of the cover body with the small diameter section thereof, and is guided by the guiding component An annular exhaust space is formed between the segment and the opening; an air inlet connector has a head and a body, and a shoulder is formed between the head and the body, and the air inlet connector The guide member is arranged in the threaded hole through the guide member, the through hole and the through hole, and the guide member is connected to the screw hole. The pair of small diameter segments should be sleeved on the body of the air inlet joint, and the shoulder of the air inlet joint can be blocked by the guiding portion of the guiding member. Of course, the invention may be varied on certain components, or in the arrangement of the components, but the selected embodiments are described in detail in the specification and their construction is shown in the drawings. [Embodiment] 5 1355993: First, please refer to FIG. 1 to FIG. 3 'a pneumatic tool with an improved sound absorbing device provided by the present invention, which mainly consists of a casing body, a pneumatic motor 2 1 , and a bearing The seat 31, a cover 41, a guide bow member 5 1 and an air inlet joint 61 form a 'where: the casing body 11 is hollow tubular, and at the rear end of the casing body 1 1 2 It has an axial screw hole 1 ^ for the input of dust gas. The air motor 21 is axially disposed inside the casing body i, and a pneumatic switch 2 2 is disposed on the side of the air motor 21, and the high-pressure gas system input by the screw hole 13 is subjected to The pneumatic switch 22 controls to determine whether to drive the air motor 21 to start running, and the exhaust gas generated after the air motor 21 is operated is discharged from the rear end of the casing body 1 1 . The socket 3 1 ' is a ring-shaped seat body, and the socket 3 1 is plugged at one end thereof in the rear end 1 2 of the casing body 1 1 , and the inner edge of the socket 3 1 is provided with a block The wall 3 2, and the retainer 3 1 is abutted against the outer periphery of the screw hole 13 of the casing body 1 1 by the retaining wall 3 2 , and a shaft is disposed at a central position of the collision wall 32 The through hole 3 3 is disposed opposite to the screw hole 13 , and a plurality of axial through holes 34 for exhausting gas are further disposed around the through hole 3 3 , and the socket 3 is 1 is formed on the outer edge of the other end of the housing body 11 and has an annular recess 3, the cover 41 has a card portion 42, and the card portion 42 can be engaged with the 6 1355993. The recessed portion 3 5 of the seat 3 1 is such that the cover body 4 is fixed to the socket 31, and the central portion of the cover body 41 is provided with an axial insertion opening 43, and the cover is provided. The body 41 is formed with a flow guiding surface 4 4 which is gradually contracted toward the through opening 43 , and is provided with a plurality of tapered cones around the opening 4 3 . And extending toward the socket 31 to the top portion 45. The guiding member 51 is annular and has a small diameter end 52 and a large diameter end 53, and a small diameter end 52 is formed outside the guiding member 51 to the large diameter. The end portion 5 3 gradually expands the guiding portion 5 4 , and the small diameter end portion 5 2 extends a small diameter portion 5 2 χ, and the guiding member 5 is threaded with the small diameter portion 5 2 1 thereof. The cover body 4 is formed in the opening portion 4 3 , and an annular exhaust air space 5 5 is formed between the guiding portion 5 4 of the annular guiding member 51 and the through opening portion 43 . The air inlet connector 6 1 has a head portion 6 2 and a body portion 63 having a thread and is formed between the head portion 6 2 and the body portion 63. There is a shoulder portion 64. And forming a pressing portion 65 ′ between the shoulder portion 64 and the body portion 63 , and the air inlet joint 61 sequentially passes through the guiding member 5 1 with the body portion 63 , and the wearing port 43 . When the through hole 3 3 is reconnected to the screw hole 13 and the air inlet joint 6 1 is connected to the screw hole 13 , the guiding member 51 is characterized by its small diameter section 5 2 1 . Correspondingly, it is sleeved on the body portion 63 of the air inlet connector 61, and the shoulder portion 6 4 7 1355993 of the air inlet connector 61 is blocked from the large diameter end 53 of the guiding member 51 to prevent the guiding. The piece 5 1 is disengaged, and the pressing portion 65 is pressed against the periphery of the through hole 3 3 of the socket 3 1 , thereby pressing the socket 31 and fixing it to the rear end of the casing body 1 1 . 1 2. Next, please refer to FIG. 4, in the actual operation, the air inlet joint 61 is connected with a high-pressure gas pipeline and the inlet.
氣接頭6 1之快速接頭71，且當高壓氣體由該進氣接頭 6 1進入而帶動該氣動馬達21運轉後，其所產生之廢氣 係再朝向該蓋體41之穿設口 4 3方向排出，而當廢氣經 該各通孔3 4而進入該蓋體41時，廢氣即會受該蓋體4 1所形成之導流面44導引而朝向該穿設口 4 3與該導弓丨 件5 1之間所構成之環形的排風空間5 5導出，且由該排 風空間5 5導出之廢氣則再受該環形導引件5 1之導弓丨段 54導引而使氣流以喇0八狀的擴散方式向外排出。The quick connector 71 of the gas connector 61, and when the high-pressure gas enters the air-injecting port 61 to drive the air motor 21, the exhaust gas generated is discharged toward the opening port 41 of the cover 41. When the exhaust gas enters the cover body 41 through the through holes 34, the exhaust gas is guided by the flow guiding surface 44 formed by the cover body 41 to face the opening port 43 and the guide bow. The annular exhaust space 5 5 formed between the pieces 51 is led out, and the exhaust gas led out by the exhaust space 5 5 is further guided by the guide bow portion 54 of the annular guide 51 to make the air flow The scatter pattern of La octagon is discharged outward.
藉此，使本發明之氣動工具後端所向外排出之廢氣 均句擴散並避開接設於氣動工具後端之快速接頭7丄， =由本發明之氣動工具所向後排出之廢氣不會直接衝擊 2K速接頭7 1上，而可有效避免因氣流衝撞所產生 音現象*田心 空間5，者，本發明更藉由其係採用單一呈環形的剩 5以排出廢氣，因此更可有效減少廢氣排出時 流現象所造成之場音。 呀因 8 接著請參閲第5圖及第6圖，其係為本發明之第二實 施例態樣，其中，該承座3 1之擋壁3 2與該蓋體41之 間係更容設有一可降低排氣噪音之消音棉81，該消音棉 8 1—端係抵接於該擂壁3 2上，而該消音棉8 1另一端 則受該蓋體4 1内之抵頂部4 5定位’以定位於該擋壁3 2與該蓋體4 1之間，並藉此可有效避免消音棉8 1受排 出氣流影響而堵塞於該排風空間5 5，且藉由增設該消音 棉81之方式更可使本發明於運作時所產生之嗓音值有效 降低。 另如第7圖及第8圖所示，其係為本發明之第三實施 例態樣，其與上述第二實施例之差異係在於，該消音棉8 1於朝向該穿設口43之一端更設有一網體82，且該網 體8 2被該蓋體41内之抵頂部4 5定位，而該網體8 2 則再壓抵於該消音棉8 1上，並藉此達到定位該消音棉8 1且達到與上述第二實施例相同之功效。 並經由上述設計之本發明，可將氣動工具於運作時之 噪音值有效降低至7 5分貝（deci-Bell，dB)。 惟，以上各實施例之揭示係用以說明本發明，並非用 以限制本發明，故舉凡數值之變更或等效元件之替換仍應 隸屬本發明之範脅。 並由以上詳細說明，可使熟知本項技藝者明暸本發明 1355993 的確可達成前述目的，且本發明在與本類產品相較下，係 確實可有效降低氣動工具於運作時所產生之噪音值，實已 符合專利法之規定，故本案發明人爰提出專利申請。Thereby, the exhaust gas discharged from the rear end of the pneumatic tool of the present invention is uniformly diffused and avoids the quick joint 7 接 attached to the rear end of the pneumatic tool, and the exhaust gas discharged backward by the pneumatic tool of the present invention is not directly Impacting the 2K speed joint 7 1 , and effectively avoiding the sound phenomenon caused by the air current collision * Tianxin space 5, the invention further adopts a single ring-shaped residual 5 to discharge the exhaust gas, thereby effectively reducing the exhaust gas. The sound of the phenomenon caused by the flow phenomenon when the exhaust gas is discharged. 8 and FIG. 6 are the second embodiment of the present invention, wherein the retaining wall 3 2 of the socket 31 is more compatible with the cover 41. The sound-absorbing cotton 81 is provided to reduce the exhaust noise, and the sound-absorbing cotton 8 1 - end is abutted against the wall 3 2, and the other end of the sound-absorbing cotton 8 1 is received by the cover 4 1 to the top 4 5 positioning 'to position between the blocking wall 3 2 and the cover body 4 1 , and thereby effectively preventing the sound-absorbing cotton 8 1 from being blocked by the exhaust air flow and being blocked in the exhaust air space 5 5 , and by adding the noise reduction The method of cotton 81 can effectively reduce the noise value produced by the present invention during operation. In addition, as shown in FIG. 7 and FIG. 8, it is a third embodiment of the present invention, and the difference from the second embodiment is that the sound-absorbing cotton 81 is facing the opening port 43. One end of the net body 82 is further disposed, and the net body 82 is positioned by the top portion 45 of the cover body 41, and the net body 82 is pressed against the muffler cotton 8 1 to achieve positioning. The sound-damping cotton 81 has the same effect as the second embodiment described above. And through the invention of the above design, the noise value of the pneumatic tool during operation can be effectively reduced to 75 decibels (dB). The disclosure of the above embodiments is intended to be illustrative of the invention, and is not intended to limit the invention. From the above detailed description, it will be apparent to those skilled in the art that the present invention can achieve the above objects, and the present invention can effectively reduce the noise value generated by the pneumatic tool during operation compared with the product of the present invention. In fact, the patent inventor has filed a patent application.
10 1355993 【圖式簡單說明】 第1圖係本發明之局部分解立體圖 第2圖係本發明之組合剖視圖 第3圖係本發明組合後之局部立體剖視圖 第4圖係本發明之使用狀態示意圖 第5圖係本發明第二實施例之局部分解立體圖 第6圖係本發明第二實施例組合後之局部剖視圖 第7圖係本發明第三實施例之局部分解立體圖 第8圖係本發明第三實施例組合後之局部剖視圖 第9圖係習用具有後向排風口之氣動工具之結構示意 圖 第1 0圖係習用具有側向排風口之氣動工具之結構示 意圖 【主要元件符號說明】 (習用部分）BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial exploded perspective view of the present invention. FIG. 3 is a cross-sectional view of the present invention. FIG. 3 is a partial perspective view of the present invention. FIG. 5 is a partially exploded perspective view of a second embodiment of the present invention. FIG. 6 is a partial exploded perspective view of a second embodiment of the present invention. FIG. 8 is a partially exploded perspective view of a third embodiment of the present invention. FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 9 is a schematic view showing the structure of a pneumatic tool having a rear exhaust vent. FIG. 10 is a schematic view showing the structure of a pneumatic tool having a lateral exhaust vent [Recognition of main components] (Applicable part)
氣動工具1、1A 排氣孔2、2 A 快速接頭3 (本發明部分） 後端1 2 氣動馬達21 承座3 1 穿孔3 3 機殼本體1 1 螺孔1 3 氣動開關2 2 擋壁3 2 11 1355993 通孔3 4 蓋體4 1 穿設口 4 3 抵頂部4 5 小徑端5 2 大徑端5 3 排風空間5 5 頭部6 2 肩部6 4 快速接頭7 1 網體8 2 凹部3 5 卡部4 2 導流面4 4 導引件5 1 小徑段5 2 1 導引段5 4 進氣接頭6 1 身部6 3 抵壓部6 5 消音棉8 1Pneumatic tools 1, 1A vent 2, 2 A quick connector 3 (part of the invention) rear end 1 2 air motor 21 socket 3 1 perforation 3 3 housing body 1 1 screw hole 1 3 pneumatic switch 2 2 wall 3 2 11 1355993 Through hole 3 4 Cover 4 1 Feeding port 4 3 Abutting top 4 5 Small diameter end 5 2 Large diameter end 5 3 Exhaust space 5 5 Head 6 2 Shoulder 6 4 Quick joint 7 1 Net body 8 2 recess 3 5 card part 4 2 flow guiding surface 4 4 guide 5 1 small diameter section 5 2 1 guiding section 5 4 air inlet joint 6 1 body part 6 3 pressing part 6 5 silencer cotton 8 1
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