M406645 五、新型說明： 【新型所屬之技術領域】 置，尤指 一種具有搖 本創作係關於一種引擎之閥動裝 臂之引擎閥動裝置。 【先前技術】 引擎閥動裝置係組設於—汽虹頭内，M406645 V. New description: [New technical field] It is especially suitable for an engine valve device with a valve actuator arm of an engine. [Prior Art] The engine valve actuation device is set in the steam head,
:與關閉以控制油氣進入燃燒室加以燃燒，促使= =，進=將廢氣排出。-般為了破保闕門能緊閉、不致因 …、漲冷縮效應等因素造成氣漏，會使搖臂與閥門連桿之間 或搖臂與凸輪基圓之間贱保持1 [然而，由冷車啟 動引擎至熱車過程將導致汽㈣内溫度升高，這種溫度落 差所產生㈣脹冷縮效應將使得⑽機汽缸頭之閥門間隙 產生變化’此間隙容易造成間門開啟與關閉時的異音。、 又當引擎媳火時，由於曲轴受旋轉運動的慣性作用， 使得引擎會繼續旋轉若干轉數，在此過程之中有許多阻抗 會導致旋轉逐漸緩慢下來，最後停止。其中最大的阻抗是 壓縮行程的壓縮壓力，因此常使引擎受該壓縮壓力之作用 而導致正常旋轉停止後反轉，然後停下來。 s引擎要重新啟動時，汽缸内之活塞係向燃燒室移 動，此時因進氣閥與排氣閥係皆處於關閉狀態，故活塞移 動時必須克服汽缸内受擠壓的氣體壓力以完成剩餘部分的 移動。亦即，不論是以電動馬達啟動或是人工施力啟動， 皆必須提供足夠的扭矩以克服前述汽缸内之氣體壓力。若 3 =電動馬達啟動而言，則電動馬達必須設計成具有較大 丑矩規格，無法小型化而增加成 t ，上 又右是以人工施力啟 動，例如在需踩踏以發動機車引擎 又且二^ 率之场合，則會導致踩踏 小易而增加使用者之負擔。 【新型内容】 本創作之-目的孫在提供一種具閥動裝置之 忐同時具有制音功能及減壓作用。 為，成上述目的，本創作之引擎間動袭置包括一凸輪 —早向離合器、一減愿凸齡、 减&凸輪、一搖臂機構、一推頂件: Closed to control the oil and gas entering the combustion chamber for combustion, causing = =, incoming = to exhaust the exhaust gas. In general, in order to prevent the door from being closed, not causing air leakage due to factors such as the cold and contraction effect, the rocker arm and the valve connecting rod or between the rocker arm and the cam base circle may be maintained 1 [However, Starting the engine from the cold car to the hot car process will cause the temperature in the steam (4) to rise. This temperature drop will produce (4) the expansion and contraction effect will cause the valve clearance of the (10) cylinder head to change. This gap is likely to cause the door to open and close. The abnormal sound of time. When the engine is bonfire, the engine will continue to rotate a few revolutions due to the inertia of the rotary motion. During this process, there are many impedances that cause the rotation to gradually slow down and finally stop. The largest impedance is the compression pressure of the compression stroke, so the engine is often subjected to the compression pressure to cause the normal rotation to stop and then reverse, and then stop. When the s engine is restarted, the piston in the cylinder moves to the combustion chamber. At this time, since both the intake valve and the exhaust valve system are closed, the piston must be moved to overcome the pressure of the squeezed gas in the cylinder to complete the remaining. Part of the move. That is, whether it is started by an electric motor or manually applied, it is necessary to provide sufficient torque to overcome the gas pressure in the aforementioned cylinder. If 3 = electric motor start, the electric motor must be designed to have a larger ugly size, can not be miniaturized and increased to t, and the upper and the right are manually activated, for example, when the engine is required to be stepped on the engine In the case of the second rate, it will lead to the trampling of the small and easy to increase the burden on the user. [New content] The purpose of this creation--Sun is to provide a valve-operated device with both damper function and decompression. In order to achieve the above purposes, the engine between the creations includes a cam - an early clutch, a reduction of the age, a reduction & cam, a rocker arm mechanism, a pusher
Si:::矩:述單向離合一輪轴，輪轴逆 上述減|凸輪固設於單向離合器之外環周面上，包括 姑：工作部及一止動部。上述搖臂機構包括有-搖臂盥-部^軸’搖臂框設於搖臂軸且包括有一閥門端及一被驅動 上述推頂件包括有—抵靠部…驅動部及—止撞部。 件”別抵頂推頂件與搖臂，使推頂件與㈣反向旋 隹頂件可樞設於搖臂軸或搖臂。 當凸輪軸逆轉時，工作部驅動驅動部推頂被驅動部， 搖^轉動，當凸輪轴正轉時，止動部抵靠於止擋部。 错，本創作之間彰裝置設計’僅使用-彈性件即可同 ，提供定位推頂件（屬於引擎減壓相關機 間門連桿頂端間隙所需力量。 身與 M406645 丄料性件可為3㈣黃，_有—螺旋段' 狄&兩端分別延伸之一搖臂端及一推頂 ” 設在搖臂轴，搖臂端抵頂於搖臂，推‘套 上迹汽缸頭可滑設有-閥門連桿，閱門連桿包括有_ =端。彈性件之配置係促使搖臂之_㈣向趨近以 於桿頂端。 σ 汽虹頭可包括有一蓋板’彈性件促使推頂件之抵靠部 =觸抵頂於蓋板。止擋部可呈—勾狀結構，並與 向配置。 |对 【實施方式】 t考圖I與圖2，為第一較佳實施例之引擎部分分解圖 ”。戸刀斷開立體圖。圖中顯示有一引擎之汽缸頭1〇，汽紅 頭10包括有-凸輪軸座U，凸輪軸座"頂面上突伸有四螺Si::: moment: the one-way clutch is a wheel axle, and the axle is reversed. The above-mentioned reduction|cam is fixed on the outer circumferential surface of the one-way clutch, including a working part and a stopping part. The rocker arm mechanism includes a rocker arm and a rocker arm. The rocker arm frame is disposed on the rocker arm shaft and includes a valve end and is driven. The ejector member includes an abutting portion, a driving portion and a stopping portion. . “Do not push the top pushing member and the rocker arm so that the pushing member and the (4) counter-rotating top member can be pivoted on the rocker shaft or the rocker arm. When the cam shaft is reversed, the working portion drive driving portion is driven to be driven. The part rotates and rotates. When the camshaft rotates forward, the stop abuts against the stop. Wrong, the design between the creations is 'only use-elastic parts, and the positioning pusher is provided. Decompression related force required for the top end of the door connecting rod. The body and M406645 material can be 3 (four) yellow, _ with - spiral section 'Di & both ends extend one of the rocker end and one push top" In the rocker arm shaft, the rocker arm end is abutted against the rocker arm, and the push-on-cylinder head is slidably provided with a valve connecting rod, and the door-reading link includes a _= end. The configuration of the elastic member promotes the rocker arm. (4) Approaching to the top of the rod. σ The steam head may include a cover plate 'elastic member to urge the abutting portion of the pusher member to touch against the cover plate. The stop portion may have a hook-like structure and [Embodiment] FIG. 1 and FIG. 2 are exploded views of the engine portion of the first preferred embodiment. The cutter is broken into a perspective view. There 1〇 illustrates a cylinder head of the engine, the vapor head 10 comprises a red - a camshaft holder U, the camshaft holder " the top surface of the protruding four spiro
-U型蓋板12被四螺㈣穿過而承載於凸輪轴座u 面，四螺检14螺合於四螺帽15而將蓋板12定位 如同墊片般作用。 _ ^缸頭1G内還滑設有相對應之二搖臂機構3Ga，30b與 -閥門連桿16a，16b〇 -凸輪轴21可轉動地穿設於凸輪軸座 γ凸輪軸21上固設有二閥動凸輪22(一為進氣用一為排 氣用）。 二搖臂機構有一部份組成相同，此處以搖臂機構她 三例說明’其包括一搖臂31與一搖臂軸32，其t搖臂31拖 "又於。亥搖#轴32，搖臂軸32穿設在凸輪軸座η。搖臂⑽ 5 M406645 端分別形成一閥門端311及一凸輪作用端3U，閥門端311 閥門連桿⑹之一桿頂端161，凸輪作用端313 對應於閥動凸輪22’其中閥門端311與凸輪作用端313分別 位於搖臂自身框轉轴線之相反兩側。凸輪作用端阳在本例 中為-滾輪型態端部。特別的是，搖臂機構3 〇 a比搖臂機構 3〇b更多了設於搖臂31側向之—被驅動部312，例如—凸起。 汽缸頭10内還設置有一減壓凸輪23、一單向離合器 24、。上述搖臂機構3〇a、一推頂件似―彈性件μ。單向離 合器24套設於凸輪軸21 ’於凸輪轴21逆轉時傳遞扭矩。所 謂凸輪轴2!之正轉，不失其—般意義，是指引擎在正常運 轉下凸輪轴21對應特定方向之轉動，逆轉則為與前者反向 轉動。 減壓凸輪23固設於單向離合器24之外環周面上，包括 有一工作部231及一止動部23〉本例中止動部232為一沿周 向傾斜延伸、類似勾狀之結構。推頂件33樞設於搖臂軸Η’ 包括有依序相連之一抵靠部331、一驅動部332及一止擋部 333。本例中止檔部333亦呈一勾狀結構且與止動部232^ 配置。 彈性件34分別抵頂推頂件33與搖臂31，使推頂件”與 搖臂31反向旋轉〃在本例中，彈性件34係一扭轉彈簧，包 括有一螺旋段341、自螺旋段341兩端分別延伸之一搖臂端 343及一推頂端342。螺旋段341套設在搖臂軸32,搖臂端343 抵頂於搖臂31之閥門端311，推頂端342抵頂於推頂件33。 藉由彈性件34使搖臂31之閥門端311朝向趨近壓合於桿頂 M406645 端161，也使推頂件33之抵靠部331接觸抵頂於蓋板I?。 同時參考圖1、圖3與圖4，圖3為於凸輪轴正轉時之引 擎部分剖視圖，圖4為局部放大圖。當凸輪軸2丨正轉時，單 向離合器24基本上不會耦合而跟隨轉動。但因凸輪軸以與 單向離合器24本體及其滾子間不可避免之摩擦力而使其稍 微正轉，故而單向離合器24上之止動部232也會跟隨轉動。 當止動部232漸漸轉至接觸並壓迫推頂件33之止擋部333 時，因推頂件33之抵靠部331抵靠在蓋板12而保持不動，如 此也讓止動部232、單向離合器24及減壓凸輪23都保持靜 止。此時引擎並無減壓作用。 特別的是’由於氣缸頭10設置有蓋板12，在推頂件33 之抵罪部331抵靠在蓋板12時，止擋部333可以只接觸抵頂 在止動部232而不接觸抵頂在較低的減壓凸輪外周面230， 也就是止擋部333與減壓凸輪外周面230留有一間距η。 同時參考圖1與圖5’圖5為於凸輪軸逆轉時之引擎部 分剖視圖。當凸輪軸21逆轉致使單向離合器24與其上之減 壓ώ輪23也同步轉動，減壓凸輪23之工作部231向外推動止 擋部333，進而使驅動部332對應推頂搖臂31側向之被驅動 部312’最終導致搖臂31產生轉動。搖臂31轉動也意味著其 閥門端3 11會轉動而推動閥門連桿i 6位移，達到引擎減壓效 果0 利用本創作之結構可以達到僅使用一彈性件34即同 時提供搖臂31與減壓機構推頂件33所需彈性預力，減少彈 性件之使用數量’降低整體成本且簡單化閥動裝置之結構 7 M406645 配置。 參考圖6與圖7，為第二實施例之引擎部分立體圖及剖 視圖。本貫施例與第—例之差異處在於氣缸頭丨〇並未設置 蓋板。在此情況下’由於缺乏可供抵靠部331抵頂定位之元 件’彈性件34之施力將使推頂件33之止擋部333接觸於減壓 凸輪23之外周面230’促使於引擎正轉時推頂件33之止擋部 333同時接觸於減壓凸輪23之外周面23〇與止動部232。 參考圖8與圖9，為第三實施例之引擎部分分解圖與立 體圖。本例與上一例之主要差異在於，搖臂41之被驅動部 412是在軸孔411附近向上突伸，而推頂件仙之抵靠部4〇ι 與驅動部402從頂面視角觀察構成一 L型截面。彈性件42同 樣是分別抵頂在推頂件4〇之抵靠部4〇1與搖臂41之閥門端 413。 上述實施例僅係為了方便說明而舉例而已，本創作所 主張之權利範圍自應以申請專利範圍所述為準，而非僅限 於上述實施例。 【圖式簡單說明】 圖1係本創作第一較佳實施例之引擎部分分解圖。 圖2係本創作第一較佳實施例之引擎部分斷開立體圖。 圖3係本創作第一較佳實施例於凸輪軸正轉時之引擎部分 剖視圖。 圖4係圖3局部放大圖。 圖5係本創作第一較佳實施例於凸輪軸逆轉時之引擎部分 M406645 二較佳實施例之引 二較佳實施例之引 三較佳實施例之引 三較佳實施例之引 剖視圖。 圖6係本創作第 圖7係本創作第 圖8係本創作第 圖9係本創作第 擎部分立體圖。 擎部分剖視圖。 擎部分分解圖。 擎部分立體圖。 凸輪轴座11 螺检 14 閥門連桿16a，16b 凸輪軸21 減壓凸輪23 工作部231 單向離合器24 搖臂31，41 被驅動部312,412 搖臂軸32 抵靠部331,401 止擋部333 螺旋段341 搖臂端343 間距Η 【主要元件符號說明】 汽紅頭1 〇 蓋板12 螺帽15 桿頂端161 閥動凸輪22 外周面230 止動部232 搖臂機構30a，30b 閥門端311,413 凸輪作用端3 13 推頂件33,40 驅動部332,402 彈性件34,42 推頂端342 軸孔411 9The U-shaped cover 12 is carried by the four screws (four) and carried on the cam shaft seat u face, and the four screw 14 is screwed to the four nut 15 to position the cover 12 as a spacer. _ ^The cylinder head 1G is also slidably provided with corresponding two rocker arms 3Ga, 30b and - valve connecting rods 16a, 16b 〇 - camshaft 21 is rotatably disposed on the camshaft seat γ camshaft 21 The two-valve moving cam 22 (one for the intake air is for the exhaust). The two rocker arm mechanisms have the same composition. Here, the rocker arm mechanism is illustrated by three examples. It includes a rocker arm 31 and a rocker arm shaft 32, and the t-rocker arm 31 is dragged. The rocking shaft #32 is disposed on the camshaft seat η. The rocker arm (10) 5 M406645 end forms a valve end 311 and a cam action end 3U, respectively, the valve end 311 is a rod end 161 of the valve connecting rod (6), and the cam working end 313 corresponds to the valve moving cam 22', wherein the valve end 311 and the cam act The ends 313 are respectively located on opposite sides of the axis of rotation of the rocker arm itself. The cam action end is in this case the - roller type end. In particular, the rocker arm mechanism 3 〇 a is more than the rocker arm mechanism 3〇b provided on the lateral side of the rocker arm 31—the driven portion 312, for example, a projection. A decompression cam 23 and a one-way clutch 24 are also disposed in the cylinder head 10. The rocker arm mechanism 3〇a and a pusher member are similar to the elastic member μ. The one-way clutch 24 is sleeved on the camshaft 21' to transmit torque when the camshaft 21 is reversed. The forward rotation of the camshaft 2!, without losing its general meaning, refers to the rotation of the camshaft 21 in a specific direction under normal operation of the engine, and the reverse rotation is reverse rotation with the former. The decompression cam 23 is fixed to the outer circumferential surface of the one-way clutch 24, and includes a working portion 231 and a stopper portion 23. In this example, the stopper portion 232 is a hook-like structure extending obliquely in the circumferential direction. The ejector member 33 is pivotally disposed on the rocker shaft Η', and includes abutting portion 331, a driving portion 332 and a stopping portion 333. In this example, the stop portion 333 also has a hook-like structure and is disposed with the stopper portion 232. The elastic member 34 abuts against the ejector member 33 and the rocker arm 31 respectively, so that the ejector member ” rotates in the opposite direction to the rocker arm 31. In this example, the elastic member 34 is a torsion spring, and includes a spiral segment 341 and a spiral segment. One end of the 341 extends one of the rocker end 343 and one pusher end 342. The spiral section 341 is sleeved on the rocker shaft 32, the rocker end 343 is abutted against the valve end 311 of the rocker arm 31, and the pusher end 342 is pushed against the pusher The top piece 33. The valve end 311 of the rocker arm 31 is pressed toward the end 161 of the top M406645 by the elastic member 34, and the abutting portion 331 of the ejector member 33 is also brought into contact with the cover plate I. Referring to Figures 1, 3 and 4, Figure 3 is a partial cross-sectional view of the engine when the camshaft is rotating forward, and Figure 4 is a partial enlarged view. When the camshaft 2 is rotated forward, the one-way clutch 24 is substantially not coupled. Following the rotation, the camshaft is slightly rotated forward due to the inevitable frictional force between the camshaft and the roller of the one-way clutch 24, so that the stopper 232 on the one-way clutch 24 also follows the rotation. When the portion 232 is gradually turned to contact and press the stopper portion 333 of the ejector member 33, the abutting portion 331 of the ejector member 33 abuts against the cover plate 12 to protect Holding the movement, the stop portion 232, the one-way clutch 24, and the decompression cam 23 are all kept still. At this time, the engine does not have a decompression action. In particular, 'Because the cylinder head 10 is provided with the cover 12, the top is pushed. When the escaping portion 331 of the member 33 abuts against the cover 12, the stopping portion 333 can only contact the abutting portion 232 at the stopping portion 232 without contacting the abutting at the lower decompression cam outer peripheral surface 230, that is, the stopping portion 333 There is a distance η from the outer peripheral surface 230 of the decompression cam. Referring to Figures 1 and 5', Figure 5 is a partial cross-sectional view of the engine when the camshaft is reversed. When the camshaft 21 is reversed, the one-way clutch 24 and the decompression wheel thereon are reversed. 23 is also rotated synchronously, and the working portion 231 of the decompression cam 23 pushes the stopper portion 333 outward, so that the driving portion 332 corresponding to the driven portion 312' of the ejector rocker arm 31 sideways finally causes the rocker arm 31 to rotate. The rotation of 31 also means that the valve end 3 11 will rotate to push the valve connecting rod i 6 to displace the engine to achieve the decompression effect of the engine. 0 The structure of the present invention can be used to provide only the rocking arm 31 and the pressure reducing mechanism while using only one elastic member 34. The elastic preload required for the ejector member 33 reduces the elastic member With the quantity 'reducing the overall cost and simplifying the structure of the valve actuator 7 M406645 configuration. Referring to Figures 6 and 7, is a perspective view and a cross-sectional view of the engine portion of the second embodiment. The difference between the present embodiment and the first example lies in the cylinder The head sill is not provided with a cover plate. In this case, the urging force of the elastic member 34 due to the lack of the member that can be positioned against the abutment portion 331 will cause the stopper portion 333 of the ejector member 33 to contact the decompression cam. The outer peripheral surface 230 ′ urges the stopper portion 333 of the ejector member 33 to simultaneously contact the outer peripheral surface 23 减压 of the decompression cam 23 and the stopper portion 232 when the engine is rotating forward. Referring to Figures 8 and 9, there are exploded views and perspective views of the engine portion of the third embodiment. The main difference between this example and the above example is that the driven portion 412 of the rocker arm 41 protrudes upward in the vicinity of the shaft hole 411, and the abutting portion 4〇 of the ejector member and the driving portion 402 are viewed from the top surface. An L-shaped section. The elastic members 42 are also respectively abutted against the abutting portion 4'' of the ejector member 4'' and the valve end 413 of the rocker arm 41, respectively. The above-described embodiments are merely examples for convenience of description, and the scope of the claims is intended to be based on the scope of the patent application, and is not limited to the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded view of an engine portion of a first preferred embodiment of the present invention. Figure 2 is an exploded perspective view of the engine portion of the first preferred embodiment of the present invention. Fig. 3 is a cross-sectional view showing the engine portion of the first preferred embodiment of the present invention when the cam shaft is rotated forward. Figure 4 is a partial enlarged view of Figure 3. Figure 5 is a cross-sectional view of the preferred embodiment of the first preferred embodiment of the present invention in the case of a camshaft reversal. The preferred embodiment of the preferred embodiment of the present invention. Fig. 6 is a diagram of the present invention. Fig. 7 is a creation of the present invention. Fig. 8 is a perspective view of the present invention. Partial sectional view of the engine. The engine is partially exploded. Part of the stereoscopic picture. Camshaft seat 11 screw check 14 valve connecting rod 16a, 16b camshaft 21 decompression cam 23 working part 231 one-way clutch 24 rocker arm 31, 41 driven part 312, 412 rocker shaft 32 abutment part 331, 401 stop part 333 spiral section 341 Rocker end 343 Η Η [Main component symbol description] Steam red head 1 〇 cover 12 Nut 15 rod top 161 Valve cam 22 External peripheral surface 230 Stopper 232 Rocker mechanism 30a, 30b Valve end 311, 413 Cam end 3 13 ejector member 33, 40 drive portion 332, 402 elastic member 34, 42 push tip 342 shaft hole 411 9