M352061 八、新型說明： — 【新型所屬之技術領域】 ’ 本創靜及—紐影幕，制涉及-種郷幕的減速機構。 【先前技術】 在使用的投影幕是由拉管、幕布、扭力彈簧總成、轉管和 外殼組成，拉管連接在幕布的一端，幕布的另一端連接在轉管 上’在扭力㈣總成的作用下，_轉管的轉動將幕布回捲繞在 . 轉管上’由於幕布回卷彈力較大，幕布回卷的速度較快，拉管會 • 碰撞在外殼上’造成拉管或外殼損壞，影響幕布的平整，為了減 緩幕布回卷的速度，有時候可採用手工控制，但是操作不方便， 使用效果不好，也影響投影幕使用。 ，，中國專利授權公告號為⑽施阶公開的“投影幕減速機 構，參見圖卜投影幕是由拉管(圖未示），幕布(圖未示），轉管 21和外鐵圖未示)組成’拉管連接在幕布的一端，幕布的另一端 連接在轉官21上，通過轉管的轉動將幕布回捲繞在轉管以 在轉g 21内设置有投影幕減速機構。減速機構通過轴芯 瞻 安f在鮮内。減速機構是由傳動機構和織機構組成，減速機 、 構設置在減速箱體5内’減速箱蓋1蓋在減速箱體5 -側並且兩 ^通過螺2 15固定’密封關套3安裝在軸芯μ上，在密封圈 £套3上5又置有一組密封圈2和另一組密封圈，在轴芯μ上 有播圈17，在軸芯14上安裝有自鎖彈菁袖芯4，在自鎖彈菁袖 ，4上套有自鎖彈簧18。傳動機構是由三組行星齒輪組成，三組 輪的m疋架分別固定，第—組行星齒輪固定架6上有第一 亍^輪/ ’第—組行星齒輪7與減速箱體5上的内齒輪8配 ★、、且行星齒輪7與第二組行星齒輪H1定架9配合，第二組 M3 52061 行星齒輪固定架9上有第二組行星齒輪 輪與第三、崎星齒翻絲1G配合^ 行星齒 上有第三崎錢輪齡示），第：輪固定架10 固定架19配合，通過行星齒輪===輪與行星齒輪制動 動機構。_機構是崎結輪_〗定’=力傳遞給制 組成，行f齒輪制動固定架19與第===動蹄η 仃星齒輪π動打星齒輪制動固定架19轉動屋第-組 :架19上對稱設置有行星轴(圖未示)，在行星轴工安動固 動蹄η，減速纖匈_鼓22 離心制 一個注液口 23，通過注液σ 23向減補體5 上設置 二20和螺絲13密封，在行星轴上有播圈26，::;夜星= 之間有行星齒輪擋圈25。 一·、、且仃星齒輪 箱體ί上二奋為圖1中投•幕的A_A方向剖面圖’盆令’、咸邊 相體5上的内齒輪8與行星齒輪7配合二中減速 星齒輪固定架9配合，行星 Μ -第二組行 轉動。 心輪7 ▼動第二組行星齒輪固定架9 总9= 見士圖3，為圖1中投影幕的Μ方向剖面圖，^ 士 I;體Si針轉動過程中帶動幕布放開，橡膠帶動^二動咸： 相體5轉動，減逮箱體上的 ㈣輪12頁動減速 經過三組行星齒輪傳動配合仃星齒輪7配合， 心制動蹄11轉動，由鮮使订生齒輪制動固定架19上的離 足夠的離心力使麵 ·疋木19的轉逮低，不能夠產生 速箱體内表面關’離，蹄11便不能與減 針轉動過程中，r 觸產生摩擦制動力。在轉管21逆時 仃星齒輪固定架6帶動自鎖彈簧Μ 一起轉動， M352061 由於自鎖彈簧18的收 4上，行星蠢輪固定举“，自鎖彈簧18收緊在自鎖彈簧轴芯 經過三組行星i輪傳動配i自鎖彈菁袖芯4被自鎖彈簧18固定， 加大，產生足σ，使行星齒輪制動固定架19的轉速 與減迷箱體’離心制動料 制動力的大小隨轉速變化調節，可 使用置有間隔的凸台（圖未示）， /、動豉22接觸產生摩擦制動力。 上述專利的減速機構採用行星輪結構 速機構體積偏大、整個傳動需要密 在者4稷雜，減 油潤滑等問題。 、、衣兄，且要經常添加潤滑 【新型内容】 要經常添加清關滑。 ’、，、“_%&，不将 本創作-實施顺⑽—触縣減 包括一轉管及一設置于轉管内的-固定=中= =離合式摩擦減速機構包括：一與轉管固定連接、=離合 一與連接離合基座離合連接的離合器； 一摩擦減速轉套，摩擦減速轉套的一端與一設置于轉管内的 M352061 ^定軸固定連接，另一端同軸設置有芯軸’連接離合基座和離合 器套裝於芯軸上，並可繞芯軸轉動； 一設置於該摩擦減速轉套與該離合器之間的摩擦減速結構。 於本創作的一個實施例中，離合器包括設置於連接離合基座 上的離合端社㈣—離合科和設置料二離合單元的雜 減速滑套，第一離合單元與第二離合單元可離合地相互 τ 現離合。M352061 VIII. New description: — 【New technical field】 ’ This creation and the new screen, the system involves a kind of speed reduction mechanism. [Prior Art] The projection screen used is composed of a pull tube, a curtain, a torsion spring assembly, a rotating tube and an outer casing. The pull tube is connected to one end of the screen, and the other end of the screen is connected to the rotating tube. 'In the torque (four) assembly Under the action of the _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Damage, affecting the smoothness of the curtain, in order to slow down the speed of the curtain rewinding, sometimes manual control can be used, but the operation is inconvenient, the use effect is not good, and the projection screen is also used. , China Patent Licensing Bulletin No. (10) The disclosed "projection screen deceleration mechanism, see Figure Bu projection screen is by pull tube (not shown), curtain (not shown), turret 21 and external iron diagram not shown The composition 'pull tube is connected to one end of the curtain, and the other end of the screen is connected to the rotation guide 21, and the curtain is wound back around the rotating tube by the rotation of the rotating tube to provide a projection screen reduction mechanism in the rotation g21. The shaft speed is made up of the shaft. The speed reduction mechanism is composed of a transmission mechanism and a weaving mechanism. The speed reducer and the structure are arranged in the reduction box body 5. The reduction box cover 1 is placed on the side of the reduction box 5 side and the two passes through the screw. 2 15 fixed 'sealing sleeve 3 is mounted on the shaft core μ, and a set of sealing ring 2 and another set of sealing ring are placed on the sealing ring 3, and a ring 17 is arranged on the shaft core μ at the core The self-locking elastic cuff core 4 is installed on the 14th, and the self-locking spring 18 is set on the self-locking elastic sleeve. The transmission mechanism is composed of three sets of planetary gears, and the m-frames of the three sets of wheels are respectively fixed, the first- The planetary gear holder 6 has a first 轮 wheel / 'the first set of planetary gears 7 and the internal gear 8 on the reduction box 5 And the planetary gear 7 is matched with the second set of planetary gears H1, and the second set of M3 52061 planetary gear mounts 9 has a second set of planetary gear wheels and a third, Satoshi tooth turning wire 1G. There is a third Saki money wheel age), the first: wheel mount 10 fixed frame 19 fits, through the planetary gear === wheel and the planetary gear brake mechanism. _ mechanism is the knotted wheel _〗 〖 Composition, line f gear brake holder 19 and the first === hoof η 仃 star gear π moving star gear brake holder 19 rotating house - group: frame 19 is symmetrically arranged with a planetary shaft (not shown), In the planetary shaft work, the fixed hoist η, the reduction fiber _ _ drum 22 is centrifuged to make a liquid injection port 23, and the liquid σ 23 is used to set the seal 20 on the reduction body 5 and the screw 13 is sealed, and there is a broadcast ring on the planetary shaft. 26,::;Night star=There is a planetary gear ring between the two. 1.······················································ The internal gear 8 on the phase body 5 cooperates with the planetary gear 7 to cooperate with the second reduction star gear fixing frame 9, and the planetary Μ - the second group rotates. The heart wheel 7 ▼ moves the second Planetary gear holder 9 Total 9= See Figure 3, which is the cross-sectional view of the projection screen in Figure 1, ^I I; the body Si needle rotates during the rotation process, the rubber drives the two movements: phase 5 Rotating, reducing the (four) wheel on the box body, the 12-page dynamic deceleration is coordinated by the three sets of planetary gears and the comet gear 7, and the heart brake shoe 11 is rotated, so that the centrifugal force on the fresh-made gear brake fixing frame 19 is sufficient. Face·Coffin 19 has a low turning speed and cannot produce the surface of the speed box. The hoof 11 cannot be combined with the needle reduction. The frictional braking force is generated by the r. When the turret 21 is reversed, the stellar gear is fixed. The frame 6 drives the self-locking spring Μ to rotate together, M352061 due to the self-locking spring 18 of the 4, the planet stupid wheel is fixed, "the self-locking spring 18 is tightened in the self-locking spring shaft through three sets of planetary i-wheel transmission with i The lock elastic cuff core 4 is fixed by the self-locking spring 18, and increases, and the foot σ is generated, so that the rotation speed of the planetary gear brake fixing frame 19 and the braking force of the deceleration box body 'the centrifugal brake material are adjusted according to the rotation speed, and can be used. There are spaced bosses (not shown), /, and the contact of the movable 22 produces Wipe the braking force. The speed reduction mechanism of the above patent adopts the problem that the planetary gear structure speed mechanism is too large, the whole transmission needs to be dense, and the oil lubrication is reduced. , clothing brother, and should always add lubrication [new content] to always add clearing slip. ',,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Fixed connection, = clutch and clutch connected to the clutch base; a friction reduction sleeve, one end of the friction reduction sleeve is fixedly connected with a M352061 ^ fixed shaft disposed in the rotating tube, and the other end is coaxially provided with a mandrel' Connecting the clutch base and the clutch to the mandrel and rotating around the mandrel; a friction deceleration structure disposed between the friction deceleration sleeve and the clutch. In an embodiment of the present invention, the clutch is disposed on the Connecting the clutch end (4) on the clutch base - the clutch and the misalignment sliding sleeve of the second clutch unit, the first clutch unit and the second clutch unit can be clutched and coupled to each other.
於本創作的一個實施例中，第一離合單元為至少一個設置在 ，接離合基座_合端社的棘爪’ $二離合單元為與棘爪可離 合地嚙合的棘輪。 於本創作—個實施射’第—離合單元為多數綱布設置在 ^離合=齡端面上的祕⑷峰料⑽成—讎 與絲細曝爪齡的棘輪，且摩擦減 套在置於其另—端的摩擦減逮套，而離合器還包括 上亚位於所述摩_速套鱗_速滑套之間的離合 喝=:、過離合彈黃，使第—離合單元與第二離合單对離合地 合器其他結構形式的綱，如片式離 本創作-個實施例的摩擦減 轉套之所述雜輪峨物 根據本創作一個實施例，摩 =的第-雜响蝴===== 一摩擦面舆第二摩擦面相互摩擦，起到減速作用:;:面第： 9 M3 52061 摩擦面為環面，第二摩擦面相對應的也為環面。 減速本創作另一個實施例’摩擦減速結構包括一設置在摩擦 外套面.^摩賴聽上軸套面；—設置在雜姐滑套上的 外奈面i Ρ至少—設置在縣減速套的内套面及雜減速滑套的 雜滾動耕，且滾動元件依靠摩擦減速套的内套面或 速二==摩擦’在摩擦減速編套面及摩擦減 组件^本創作另—個實施例’雜減速結構還包括 一容納滾動 面及塵i的減速滑賴’減速_槽設置在摩擦減速套的内套 滑動套的外套面中的至少其-上，且滾動組件在減速 動本創作另一個實施例’滾動元件為輥子或滾珠，減速滑 ^槽>。摩擦減速滑套的外套面或摩擦減速轉套㈣套面螺旋伸 展0 了如上的技術方案’本創作—個實施例在下拉幕布 管及連接離合基座順時針轉動，連接離合基座盘 二轉’使幕布快速下拉’幕布在下拉過程中，扭力彈^ :座 ，幕布時’扭力彈簧蓄能槪，通過連麵合基絲轉ς = 針轉動’同義接離合基座與摩擦減速轉套之間轉_ 依靠摩擦減速轉套與雜顧辟之間的摩擦減逮結， 逮回收。本創作-個實施例與現有_行星減速機構相I，且 結構簡單實用’體積減少，在幕布回卷時有緩衝作用 ^ 在幕布回卷巾雜腫’防姻鱗力翻絲布上。 個實施例的減速機構整個傳動無需密封的環培， y乍— 兄个禺要經常添加 M352061 潤滑油潤滑。 【實施方式】 本創作提供的減速機構，以較佳實施例而言，此減迷機構是 為投影幕使用。然而，此減速機構也可供其他需要捲簾的裝置使 用。進一步而言’本創作更包含使用此減速機構的投影幕。 如圖4所示，一種投影幕，包含有拉管(圖未示），幕布(圖未 示）’轉管100、外殼(圖未示）、扭力彈簧總成，拉管(圖未示)連 接在幕布的一端’幕布的另一端連接在轉管1〇〇上，扭力彈簧換 成中的扭力彈簀200在拉下幕布時，通過轉管1〇〇順時針轉$蓄 能。當幕布需要回卷時，扭力彈簧200釋放能量，驅動轉管1〇〇 的轉動，通過轉管100的轉動將幕布回捲繞在轉管1〇〇上。 本創作一實施例，提供一種設置在轉管100内的投影幕減速 機構，其能夠應用於一投影幕，此投影幕包括一轉管及一設置于 轉管内的一固定轴，且該減速機構包括一安裝在轉管1〇〇内的離 合式摩擦減速機構，依靠摩擦力來實現轉管1〇〇的減速回收。當 然也可以只在轉管1〇〇内的一端設置有離合式摩擦減速機構。 下面就以一套這樣的離合式摩擦減速機構來詳細說明。 參見圖5，該離合式摩擦減速機構基本上包含連接離合基座 30^、摩擦減速轉套4〇〇、離合器。其中摩擦減速滑套和離合 彈簧600構成本創作一實施例的離合器中的一部分。 該連接離合基座300包括-個小直徑的小圓臺31〇和一個大 直徑的大圓臺320,其中大圓臺320通過三個止附螺絲與轉管1〇〇 ，附’使連接離合基座與轉f 1〇〇㈤步轉動，充當整個離合 式摩擦減速機構的旋轉端。在大圓臺32〇上開設有一轴向的穿孔 M3 52061 32卜並在大圓臺32〇的圓周面開設有—凹槽322，扭力彈筹· 2-端百先穿過穿孔32卜然後響折，彎折部分嵌入到凹槽您 ^即可使扭力彈簣200的端頭固定在連接離合基座遍上。冬 二j可以在大圓臺320上開設兩個轴向的穿孔321或者一個轴 向的穿孔32卜-個徑向孔，將科部分插入到另一個轴向的穿 =3=或徑向孔中，使扭力彈簧細的端頭較在連接離合基座 f連接離合基座300内設置-中心轴孔33〇，該中心轴孔33〇 軸向貫穿大、小圓臺320、310。 圖5所示的離合器的第一離合單元設置於連接離合基座· 中的小圓4 310的離合端面上’該第一離合單元為至少一個安装 在連接離合基座300中的小圓臺的離合端面上的棘爪，在二 個較佳的實施财，該第-離合單福轩綱布設置在連接離 合基座300中的小圓臺310的離合端面上的棘爪，多個棘爪構成 一個棘輪311。 摩擦減速轉套400的-端與一設置于轉管1〇〇内的固定軸 700 ’如鋁官固定連接，另一端同轴設置有芯軸41〇和摩擦減速 套420，摩擦減速套420的内徑大於芯軸41〇的外徑。連接離合 基座300的中心軸孔330套在芯軸41〇上，同時離合器中的摩^ 減逮滑套500和離合彈簧600也套在芯軸41〇上，連接離合基^ 300和摩擦減速滑套5〇〇可以繞芯軸41〇轉動。離合彈簧6⑻沿 芯軸410長度方向位於摩擦減速套42〇與摩擦減速滑套5〇〇之間。 摩擦減速滑套500包括一直徑較小的小套51〇和—直徑稱大 的大套520，小套510嵌入到摩擦減速套420中，在大套52〇的 離合端面上設置有離合器的第二離合單元，該第二離合單元與第 12In one embodiment of the present invention, the first clutch unit is at least one of the pawl's and the two clutch unit that is coupled to the clutch base. The two clutch unit is a ratchet that is engageable with the pawl. In this creation, the implementation of the 'first-clutch unit is set for the majority of the cloth on the ^ clutch = the end of the secret (4) peak material (10) into - 雠 and the wire is exposed to the claw-length ratchet, and the friction reduction sleeve is placed in it The other end of the friction reduction catch, and the clutch further includes a clutch between the top and bottom of the _ speed sleeve _ speed skating sleeve =:, over the clutch spring, so that the first clutch unit and the second clutch pair The outline of other structural forms of the clutch and the ground, such as the chip-type of the friction-reducing sleeve of the present embodiment, according to an embodiment of the present invention, the first-noisy butterfly === == A friction surface 舆 The second friction surface rubs against each other to reduce the speed:;: Surface: 9 M3 52061 The friction surface is the torus, and the second friction surface is also the torus. Deceleration Another embodiment of the creation of the 'frictional deceleration structure includes a frictional jacket surface. ^Mo Lai listens to the sleeve surface; - the outer nephew surface set on the slippery sleeve of the hybrid sister i Ρ at least - set in the county speed reducer The inner sleeve surface and the misfolded sliding sleeve are mixed and ploughed, and the rolling elements rely on the inner sleeve surface of the friction reduction sleeve or the speed two == friction 'in the friction reduction sleeve surface and the friction reduction assembly ^ another creation embodiment' The miscellaneous deceleration structure further includes a deceleration slide that accommodates the rolling surface and the dust i, and the deceleration_slot is disposed on at least the outer surface of the inner sleeve sliding sleeve of the friction reduction sleeve, and the rolling assembly is in the deceleration EXAMPLES 'Rolling elements are rollers or balls, deceleration slides>. The outer surface of the friction deceleration sleeve or the friction reduction sleeve (4) the sleeve spiral extension 0. The technical solution as above is the embodiment of the present invention. The embodiment rotates clockwise on the pull-down pipe and the connection clutch base, and connects the clutch base plate to the second rotation. 'Make the curtain fast pull down' curtain in the pull-down process, the torque bomb ^: seat, the curtain when the 'torsion spring energy storage 槪, through the joint surface of the base wire switch = needle rotation 'synonymous clutch base and friction slow down sleeve Between turns _ relying on friction to reduce the friction between the rotating sleeve and the smashing, and catching the recovery. This creation-an embodiment is in phase with the existing _ planetary reduction mechanism, and the structure is simple and practical. The volume is reduced, and there is a cushioning effect when the curtain is rewinded. ^ On the curtain, the towel is swollen, and the anti-marriage scale is turned over. The speed reduction mechanism of one embodiment does not need to be sealed in the whole transmission, y乍- brothers often add M352061 lubricating oil lubrication. [Embodiment] The speed reduction mechanism provided by the present invention, in the preferred embodiment, is used for a projection screen. However, this reduction mechanism can also be used by other devices that require a roller blind. Further, 'this creation includes a projection screen using this reduction mechanism. As shown in FIG. 4, a projection screen includes a pull tube (not shown), a screen (not shown), a turn tube 100, a casing (not shown), a torsion spring assembly, and a pull tube (not shown). Attached to one end of the curtain, the other end of the curtain is connected to the rotating tube 1〇〇, and the torsion spring is replaced by a torsion spring. When the curtain is pulled down, it is turned clockwise by the rotating tube 1 to store energy. When the curtain needs to be rewinded, the torsion spring 200 releases energy, drives the rotation of the rotating tube 1〇〇, and winds the curtain back onto the rotating tube 1 through the rotation of the rotating tube 100. An embodiment of the present invention provides a projection screen reduction mechanism disposed in the rotary tube 100, which can be applied to a projection screen, the projection screen including a rotating tube and a fixed shaft disposed in the rotating tube, and the speed reducing mechanism The utility model comprises a clutch type friction reducing mechanism installed in the rotating tube 1〇〇, and relies on the friction force to realize the deceleration recovery of the rotating tube 1〇〇. Of course, it is also possible to provide a clutch type friction reduction mechanism only at one end of the rotary tube 1〇〇. A detailed description of such a clutch type friction reduction mechanism will be given below. Referring to Fig. 5, the clutch type friction reduction mechanism basically includes a clutch base 30, a friction reduction sleeve 4, and a clutch. The friction reduction sleeve and clutch spring 600 form part of the clutch of an embodiment of the present invention. The connection clutch base 300 includes a small-diameter small circular table 31〇 and a large-diameter large circular table 320, wherein the large circular table 320 is connected to the transfer tube by three anchor screws, and is attached to the coupling base. Rotating with the turn f 1〇〇 (5) step acts as the rotating end of the entire clutch type friction reduction mechanism. An axial perforation M3 52061 32b is formed on the 32's of the large round table, and a groove 322 is opened on the circumferential surface of the large round table 32〇, and the torsion is raised. The 2-end one passes through the perforation 32 and then folds. The bent portion is embedded in the groove so that the end of the torsion magazine 200 can be fixed over the connection clutch base. In winter, two axial perforations 321 or one axial perforations 32-radial holes can be opened on the large round table 320, and the section is inserted into the other axial wear = 3 = or radial holes. The end of the torsion spring is arranged to be connected to the clutch base 300 and connected to the clutch base 300. The central shaft hole 33 is axially penetrated through the large and small circular tables 320 and 310. The first clutch unit of the clutch shown in FIG. 5 is disposed on the clutch end face of the small circle 4 310 connected to the clutch base. The first clutch unit is at least one small round table mounted in the connection clutch base 300. The pawl on the clutch end face, in two preferred embodiments, the first-clutch single Fuxuan cloth is disposed on the clutch end face of the small round table 310 connected to the clutch base 300, and the plurality of pawls A ratchet 311 is formed. The end of the friction reduction sleeve 400 is fixedly connected with a fixed shaft 700' disposed in the rotating tube 1〇〇, and the other end is coaxially provided with a core shaft 41〇 and a friction reduction sleeve 420, and the friction reduction sleeve 420 The inner diameter is larger than the outer diameter of the mandrel 41〇. The central shaft hole 330 connecting the clutch base 300 is sleeved on the mandrel 41〇, and the friction reducing sleeve 500 and the clutch spring 600 in the clutch are also sleeved on the mandrel 41〇, and the clutch base 300 and the friction are decelerated. The sliding sleeve 5〇〇 can be rotated about the mandrel 41〇. The clutch spring 6 (8) is located between the friction reduction sleeve 42A and the friction reduction sleeve 5A along the length of the mandrel 410. The friction deceleration sleeve 500 includes a small sleeve 51 直径 and a large sleeve 520 having a large diameter. The sleeve 510 is embedded in the friction reduction sleeve 420, and the clutch is disposed on the clutch end face of the large sleeve 52 第. Two clutch unit, the second clutch unit and the 12th
M352061 簧60。合=合。第二離合單元為棘輪530。在離合彈 遍上的C 2減速滑套的棘輪530與連接離合基座 棘輪伽的合地齡。具體地，摩擦減速滑套遍的 合，使得^ f離合基座勤上的棘輪311的形狀互相配 輪3U 對棘輪娜沿第—轉動方向轉動，而當棘 輪530私^轉動方向糾二_方向轉麟，則會與棘 摩擦減擦減速滑套細沿第二轉動方向相對於 當=上_合器也相為其他結_式轉合器 合盗、欽式離合器等等。這些片式離合器、喪人式離合片器3 構與作用為本領域技術人員所熟知，在此不展開描述。 在圖5所示的實施例中，在縣減速轉套400的摩擦減速套 420與離合器中的雜減速滑套鄕之間設置有摩擦減速结構。 該縣減速結構通過整讎合式雜減速機構可以減緩連接離 合基座300的轉速，從而減緩轉管刚的轉速。 該實施例中的摩擦減速結構為設置於摩擦減速轉套㈣與摩 擦減速滑套之間的面摩擦減速結構；該面摩擦減速結構由設 置在摩擦減速轉套400中的摩擦減速套42〇内套面上的第一摩擦 面810和設置在摩擦減速滑套500 t的小套510上的第二摩擦面 820構成，第一摩擦面810與第二摩擦面82〇相互摩擦，起到減 速作用。 參見圖6，該實施例中的摩擦減速結構為設置於摩擦減速轉 套400與摩擦減速滑套500之間的滾動摩擦減速結構。本實施例 的滾動摩擦減速結構包括滾動元件和容納滾動元件於其中滾動 減逮的減速滑動槽840 ;本實施例滾動元件為一輥子83〇，該親 13 圖6所不的貫施例其餘部分同M352061 spring 60. Combination = combined. The second clutch unit is a ratchet 530. The ratchet wheel 530 of the C 2 deceleration sleeve on the clutch spring and the ratcheting ridge connected to the clutch base. Specifically, the frictional deceleration sliding sleeve is integrated so that the shape of the ratchet wheel 311 on the clutch base is rotated by the mutual wheel 3U in the first-rotation direction, and when the ratchet wheel 530 is rotated in the direction of the rotation direction Turning the lining, it will rub with the spine and reduce the friction. The sliding sleeve is thinner along the second direction of rotation relative to the ___ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The construction and function of these disc clutches and sinister clutches are well known to those skilled in the art and will not be described herein. In the embodiment shown in Fig. 5, a frictional deceleration structure is provided between the friction reduction sleeve 420 of the county deceleration sleeve 400 and the misfire reduction sleeve 中 in the clutch. The deceleration structure of the county can slow down the rotation speed of the connection clutch base 300 by the integral twisting type deceleration mechanism, thereby slowing down the rotation speed of the pipe. The friction deceleration structure in this embodiment is a surface friction deceleration structure disposed between the friction deceleration sleeve (4) and the friction deceleration sleeve; the surface friction deceleration structure is disposed in the friction reduction sleeve 42〇 disposed in the friction reduction sleeve 400 The first friction surface 810 on the sleeve surface and the second friction surface 820 disposed on the small sleeve 510 of the friction reduction sliding sleeve 500 t, the first friction surface 810 and the second friction surface 82 〇 rub against each other to reduce the speed . Referring to Fig. 6, the friction reduction structure in this embodiment is a rolling friction reduction structure provided between the friction reduction sleeve 400 and the friction reduction sleeve 500. The rolling friction deceleration structure of the present embodiment includes a rolling element and a deceleration sliding groove 840 for accommodating the rolling element in which the rolling element is rolled. In this embodiment, the rolling element is a roller 83〇, and the remaining part of the embodiment is not shown in FIG. with
M352061 子830和減速滑動槽840同時設置在摩擦減速轉套400中的摩擦 減速套420的内套面上。輥子830依靠摩擦減速滑套500中的小 套510的外套面在減速滑動槽84〇内滾動，減速滑動槽84〇沿摩 擦減速轉套400中的摩擦減速套42〇的内套面螺旋伸展。當然， 該親子830和減速滑動槽84〇也可同時設置在摩擦減速滑套5〇〇 中的大套520的外套面上。 "I糾、crj貝々tim 在圖7卿的實糊巾，滾轉擦減速結射的雜元件為 -滾珠831，該滾珠如設置在雜減速轉套_中的摩擦減速 套420 _套面上’喊速_槽84()設置在縣減速滑套_ 2的i套510的外套面上。減速滑動槽84()沿摩擦減速滑套_ 中的小套510的外套面螺旋伸展。 圖7所示的實施例其餘部分同圖5所示的實施例。 本創作已由上述相關實施例加以描述， 實施本創作的制，必組㈣的是 、M僅為 創作的範圍。相反地，包例並未限制本 等設置均包含於本創作的範圍神及範_修改及均 【圖式簡單說明】 --= 圖2是圖！ m_a剖面示意圖。靴、。構不意圖。 圖3是圖1的B_B剖視圖。 圖4為本創作投影幕減逮機構外形 圖5為本創作投影減速機構—種 ^圖。 圖6為本創作投影減速機構另-種内；^意圖。 里〜P結構示意圖。 M352061 圖7為本創作投影減速機構再一種内部結構示意圖。 【主要元件符號說明】 轉管100 扭力彈簀200 連接離合基座300 摩擦減速轉套400 摩擦減速套420 摩擦減速滑套500 離合彈簧600 小圓臺310 大圓臺320 凹槽322 穿孔321 中心軸孔330 棘輪 311、530 芯轴410 小套510 大套520 固定軸700 第一摩擦面810 第二摩擦面820 減速滑動槽840 M352061 輥子830 滾珠831The M352061 sub-830 and the reduction sliding groove 840 are simultaneously disposed on the inner sleeve surface of the friction reduction sleeve 420 in the friction reduction rotary sleeve 400. The roller 830 is rolled in the deceleration slide groove 84 by the outer surface of the small sleeve 510 of the friction reduction slide 500, and the deceleration slide groove 84 is spirally extended along the inner sleeve surface of the friction reduction sleeve 42 in the friction reduction sleeve 400. Of course, the parent-child 830 and the deceleration sliding groove 84〇 can also be simultaneously disposed on the outer surface of the large sleeve 520 in the friction reduction sliding sleeve 5〇〇. "I 纠,crj 贝々tim In Figure 7 Qing's real paste towel, the frictional deceleration and the firing of the miscellaneous components are - ball 831, the ball is set in the friction deceleration sleeve _ in the friction reducer 420 _ set On the surface of the speed _ slot 84 () set on the jacket surface of the i-set 510 of the county slowdown sliding sleeve _ 2 . The deceleration sliding groove 84 () is spirally extended along the outer surface of the small sleeve 510 in the friction reduction sliding sleeve _. The remainder of the embodiment shown in Figure 7 is the same as the embodiment shown in Figure 5. This creation has been described by the above related embodiments, and the system for implementing the creation is that the group (4) is, and M is only the scope of creation. On the contrary, the package does not limit the scope of this creation to be included in the scope of this creation. Modifications and modifications [Simplified illustration] --= Figure 2 is a diagram! Schematic diagram of the m_a profile. Boots, Not intended. Fig. 3 is a cross-sectional view taken along line B_B of Fig. 1; Fig. 4 is the outline of the reduction mechanism of the projection screen of the present invention. Fig. 5 is a diagram of the projection reduction mechanism of the creation. Fig. 6 is another intent of the creation projection reduction mechanism; In the ~ P structure diagram. M352061 Figure 7 is a schematic diagram of another internal structure of the projection reduction mechanism. [Main component symbol description] Rotary tube 100 Torque magazine 200 Connection clutch base 300 Friction reduction sleeve 400 Friction reduction sleeve 420 Friction reduction sleeve 500 Separation spring 600 Small round table 310 Large round table 320 Groove 322 Perforation 321 Center shaft hole 330 Ratchet 311, 530 Mandrel 410 Small sleeve 510 Large sleeve 520 Fixed shaft 700 First friction surface 810 Second friction surface 820 Deceleration sliding groove 840 M352061 Roller 830 Ball 831