TWI381241B - Projection screen apparatus - Google Patents
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- TWI381241B TWI381241B TW97126224A TW97126224A TWI381241B TW I381241 B TWI381241 B TW I381241B TW 97126224 A TW97126224 A TW 97126224A TW 97126224 A TW97126224 A TW 97126224A TW I381241 B TWI381241 B TW I381241B
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Description
本發明係有關於一種投影幕裝置，特別是有關於一種具有自鎖機構的投影幕裝置。 The present invention relates to a projection screen apparatus, and more particularly to a projection screen apparatus having a self-locking mechanism.
目前，投影幕布已被廣泛應用於家庭、學校及商業領域，例如：家庭影院、多媒體教學、指揮中心、視頻會議室等衆多使用場合。 At present, projection screens have been widely used in home, school and commercial fields, such as home theater, multimedia teaching, command center, video conference rooms and many other occasions.
請參照第1圖所示，一種習用手拉投影幕裝置的定位機構9包括有：自鎖軸90、自鎖芯91、自鎖外套92及二開關彈簧93、95組成。自鎖芯91套設於自鎖軸90上，自鎖芯91的外圓柱面上開設有滾珠槽94；自鎖外套92套設於自鎖芯91上，於自鎖外套92的內壁上開設有一個沿軸向的直槽920，至少一滾珠96設置在自鎖芯91的滾珠槽94和自鎖外套92內壁的直槽920之間。二開關彈簧93、95分別套置於自鎖軸90之兩端，每一開關彈簧93、95均有一末端通過螺絲固定於自鎖芯91上。 Referring to FIG. 1 , a positioning mechanism 9 of a conventional hand-drawn projection screen device comprises: a self-locking shaft 90, a self-locking core 91, a self-locking jacket 92 and two switching springs 93 and 95. The self-locking core 91 is sleeved on the self-locking shaft 90. The outer cylindrical surface of the self-locking core 91 is provided with a ball groove 94. The self-locking outer sleeve 92 is sleeved on the self-locking core 91 on the inner wall of the self-locking outer casing 92. A straight slot 920 is formed in the axial direction, and at least one ball 96 is disposed between the ball groove 94 of the self-locking core 91 and the straight groove 920 of the inner wall of the self-locking outer casing 92. The two switch springs 93, 95 are respectively placed at the two ends of the self-locking shaft 90, and one end of each of the switch springs 93, 95 is fixed to the self-locking core 91 by screws.
上述習知自鎖芯91的滾珠槽94具有連通之一斜線凹槽940、一第一曲線凹槽941、一第二曲線凹槽942、一自鎖點943、一拐點944、一第三曲線凹槽945，以及一第四曲線凹槽946，其中斜線凹槽940係以相對於自鎖芯91之軸線成傾斜狀；第一曲線凹槽941及第四曲線凹槽946係環繞著自鎖芯91的外側表面設置；第二曲線凹槽942及第三曲線凹槽945係相對於自鎖芯91之軸線成傾斜狀；自鎖點943與拐點944係連接第二、第三曲線凹槽 942、945。 The ball groove 94 of the conventional self-locking core 91 has a diagonal groove 940, a first curved groove 941, a second curved groove 942, a self-locking point 943, an inflection point 944, and a third curve. a groove 945, and a fourth curved groove 946, wherein the oblique groove 940 is inclined with respect to the axis of the self-locking core 91; the first curved groove 941 and the fourth curved groove 946 are surrounded by the self-locking The outer surface of the core 91 is disposed; the second curved groove 942 and the third curved groove 945 are inclined with respect to the axis of the self-locking core 91; the self-locking point 943 is connected to the inflection point 944 to connect the second and third curved grooves. 942, 945.
當下拉投影幕布時，上述習知定位機構9之自鎖外套92沿順時針方向旋轉，此時自鎖外套92上的直槽920會驅動滾珠96從第四曲線凹槽946經過斜線凹槽940滑入第一曲線凹槽941內，並在第一曲線凹槽941內環繞運動。當欲定位投影幕布時，操作者可以隨時停止下拉，自鎖外套92反向旋轉(即逆時針旋轉)一定角度，其上的直槽920會驅動滾珠96從第一曲線凹槽941滑入第二曲線凹槽942、然後又滑至自鎖點943，此時滾珠96在自鎖點943處被卡住，而使得自鎖外套92不能逆時針回轉，藉此完成投影幕布的自鎖定位。當需要解鎖時，只需要下拉投影幕布使得自鎖外套92沿順時針方向轉動一定角度，此時自鎖外套92的直槽920會驅動滾珠96滑出(或脫出)自鎖點943，到達拐點944，被拐點944卡住無法下拉，此時可以讓投影幕布再回收，此時自鎖外套92的直槽920會驅動滾珠96滑過第三曲線槽945，然後再完全釋放投影幕布，使得自鎖外套92逆時針轉動，滾珠96就會從第三曲線凹槽945滑入第四曲線凹槽946中，並在第四曲線凹槽946內循環運動，直至投影幕布完全收回。 When the projection screen is pulled down, the self-locking jacket 92 of the conventional positioning mechanism 9 rotates in the clockwise direction, and the straight groove 920 on the self-locking jacket 92 drives the ball 96 from the fourth curved groove 946 through the oblique groove 940. It slides into the first curved groove 941 and moves around in the first curved groove 941. When the projection screen is to be positioned, the operator can stop pulling down at any time, and the self-locking jacket 92 rotates in the opposite direction (ie, counterclockwise) at a certain angle, and the straight groove 920 on the roller 96 drives the ball 96 to slide from the first curved groove 941. The two curved grooves 942 are then slid to the self-locking point 943, at which point the ball 96 is jammed at the self-locking point 943, so that the self-locking outer sleeve 92 cannot be rotated counterclockwise, thereby completing the self-locking position of the projection screen. When unlocking is required, only the projection screen needs to be pulled down so that the self-locking jacket 92 is rotated a certain angle in the clockwise direction. At this time, the straight slot 920 of the self-locking jacket 92 drives the ball 96 to slide out (or escape) the self-locking point 943 to reach The inflection point 944 is stuck by the inflection point 944 and cannot be pulled down. At this time, the projection screen can be reclaimed. At this time, the straight groove 920 of the self-locking jacket 92 drives the ball 96 to slide over the third curved groove 945, and then completely releases the projection screen, so that The self-locking outer sleeve 92 rotates counterclockwise, and the ball 96 slides from the third curved groove 945 into the fourth curved groove 946 and circulates in the fourth curved groove 946 until the projection screen is fully retracted.
儘管上述習用定位機構9可在任意處將投影幕布隨意定位，但各曲線槽加工精度不易把握，很容易發生不能解自鎖的狀況。即便加工精度達到要求，但當投影幕布僅被下拉一較短距離(將其定義為第一下拉長度)就被定位，而之後又欲回收時，在解自鎖的過程中還需要將投影幕布下拉又一距離(將其定義為第二下拉長度)，此第 二下拉長度等於滾珠96從自鎖點943滑至拐點944處之軌跡長度，以使得自鎖外套92的直槽920驅動滾珠96脫離自鎖點943而滑至拐點944，此時滾珠96極易卡死於拐點944處而無法滑出第三曲線凹槽945。詳言之，由於投影幕布的第一下拉長度很短，亦即投影幕布的回收長度非常短，當第一下拉長度與第二下拉長度相加之後的總和係小於第三曲線凹槽945之展開長度(即滾珠96在第三曲線凹槽945內之軌跡長度)時，在回收過程中，因沒有足夠的距離能夠使得滾珠96滑出第三曲線凹槽945，從而滾珠96無法進入第四曲線凹槽946中。在具體操作過程中，若遇卡死現象，通常操作者會用力下拉投影幕布以試圖解鎖，但加大的力量極易破壞滾珠槽94或者破壞習用手拉投影幕裝置之其他構件，而對解鎖則無任何功效。 Although the above-mentioned conventional positioning mechanism 9 can randomly position the projection screen at any position, the processing precision of each curved groove is difficult to grasp, and it is easy to cause a situation in which the self-locking cannot be solved. Even if the processing accuracy is required, when the projection screen is only pulled down by a short distance (defined as the first pull-down length), it is positioned, and then, when it is desired to be recycled, the projection screen needs to be pulled down during the self-locking process. Another distance (defined as the second pull down length), this The two pull-down length is equal to the track length of the ball 96 sliding from the self-locking point 943 to the inflection point 944, so that the straight groove 920 of the self-locking outer casing 92 drives the ball 96 out of the self-locking point 943 and slides to the inflection point 944, at which time the ball 96 is extremely easy. The card dies at the inflection point 944 and cannot slide out of the third curved groove 945. In detail, since the first pull-down length of the projection screen is short, that is, the recovery length of the projection screen is very short, the sum after the first pull-down length and the second pull-down length are smaller than the third curved groove 945. When the unfolding length (i.e., the length of the track of the ball 96 in the third curved groove 945), the ball 96 cannot slide into the third curved groove 945 because there is not enough distance during the recovery process. Four curved grooves 946. In the specific operation process, if there is a stuck phenomenon, usually the operator will pull down the projection screen to try to unlock, but the increased force can easily damage the ball groove 94 or destroy other components of the conventional hand projection screen device, and unlock the other components. There is no effect.
故，有必要提供一種新的投影幕裝置，以克服習知技術中存在的缺陷。 Therefore, it is necessary to provide a new projection screen device to overcome the drawbacks of the prior art.
本發明一實施例在於提供一種投影幕裝置，其設置有自鎖機構，能夠實現安全自鎖及解鎖的功能，進而提高投影幕裝置之品質。 An embodiment of the present invention provides a projection screen device that is provided with a self-locking mechanism, which can realize the functions of safe self-locking and unlocking, thereby improving the quality of the projection screen device.
本發明的其他目的和優點可以從本發明所揭露的技術特徵中得到進一步的瞭解。 Other objects and advantages of the present invention will become apparent from the technical features disclosed herein.
為達上述之一或部份或全部目的，本發明一實施例提供一種投影幕裝置，包含有：一投影幕布及一自鎖機構，投影幕布具有一自鎖位置及一解鎖位置，自鎖位置可被任意選定；自鎖機構用以定位投影幕布。自鎖機構 包含有：一自鎖軸、一自鎖芯及至少一滾珠。自鎖軸固定不動。自鎖芯安裝於自鎖軸上，具有一圓柱狀外側表面，其上設置至少一組內滾珠軌道，內滾珠軌道具有複數凹槽結構，該些凹槽形成有相貫通之一第一連通路徑及一第二連通路徑。一自鎖點及一拐點係位於第二連通路徑上，且自鎖點與拐點之間具有一第一下拉長度，拐點與第二連通路徑之相鄰近拐點之一路徑終端之間具有一第一回收長度。滾珠，係可於自鎖芯之內滾珠軌道上移動，其中當投影幕布處於自鎖位置時，下拉投影幕布，滾珠會從自鎖點移動到拐點，而當滾珠位於拐點時，回收投影幕布，滾珠會從拐點移動到第二連通路徑之路徑終端，其中，第一下拉長度係大於或等於第一回收長度，藉此當滾珠從自鎖點移動至拐點時，可使滾珠從拐點移出第二連通路徑，以避免滾珠卡死於拐點處。 To achieve one or a part or all of the above, an embodiment of the present invention provides a projection screen device, including: a projection screen and a self-locking mechanism, the projection screen has a self-locking position and an unlocking position, and the self-locking position Can be arbitrarily selected; the self-locking mechanism is used to position the projection screen. Self-locking mechanism The utility model comprises: a self-locking shaft, a self-locking core and at least one ball. The self-locking shaft is fixed. The self-locking core is mounted on the self-locking shaft and has a cylindrical outer surface on which at least one set of inner ball tracks are disposed, and the inner ball track has a plurality of groove structures, and the grooves are formed with a first through connection a path and a second connected path. A self-locking point and an inflection point are located on the second communication path, and the first pull-down length is between the self-locking point and the inflection point, and the inflection point and the second communication path are adjacent to one of the inflection points. A recycling length. The ball can be moved on the ball track in the self-locking core. When the projection screen is in the self-locking position, the projection screen is pulled down, the ball moves from the self-locking point to the inflection point, and when the ball is at the inflection point, the projection screen is recovered. The ball moves from the inflection point to the path end of the second communication path, wherein the first pull-down length is greater than or equal to the first recovery length, thereby moving the ball from the inflection point when the ball moves from the self-locking point to the inflection point Two connected paths to prevent the ball from being stuck at the inflection point.
根據本發明之另一實施例，於第一連通路徑與第二連通路徑之間具有一軌道側壁。一自鎖點及一拐點係設置於內滾珠軌道中且位於第二連通路徑上，於第二連通路徑上自鎖點和拐點之間具有一第一下拉長度；自拐點至第二連通路徑之與相鄰近拐點之一路徑終端之間形成有一第一回收長度。當投影幕布處於自鎖位置時，下拉投影幕布，滾珠會從自鎖點移動到拐點，而當滾珠位於拐點時，回收投影幕布，滾珠會從拐點移動到第二連通路徑之路徑終端，其中，第一回收長度係大於或等於第一下拉長度，當滾珠從自鎖點移動至拐點時，可進入第一連通路徑中，以避免滾珠卡死於拐點處。 According to another embodiment of the invention, there is a track sidewall between the first communication path and the second communication path. A self-locking point and an inflection point are disposed in the inner ball track and located on the second communication path, and have a first pull-down length between the self-locking point and the inflection point on the second communication path; from the inflection point to the second communication path A first recovery length is formed between the path terminals of one of the adjacent inflection points. When the projection screen is in the self-locking position, the projection screen is pulled down, the ball moves from the self-locking point to the inflection point, and when the ball is at the inflection point, the projection screen is recovered, and the ball moves from the inflection point to the path terminal of the second communication path, wherein The first recovery length is greater than or equal to the first pull-down length, and when the ball moves from the self-locking point to the inflection point, the first communication path can be entered to avoid the ball being stuck at the inflection point.
本發明之實施例的投影幕裝置之軌道側壁上設置有一開槽，直接連通拐點及第一連通路徑。第一回收長度係大於滾珠從自鎖點滑至拐點處之第一下拉長度，當解鎖時，滾珠能夠從自鎖點滑至拐點，然後再經由開槽直接進入第一連通路徑中，以避免卡死於拐點處。在另一實施例中的投影幕裝置具有一內徑較大的第一開關彈簧，可以選擇性地制止自鎖芯相對於自鎖軸沿順時針方向轉動，所以雖然第一回收長度亦大於第一下拉長度，但是在滾珠到達拐點后由於第一開關彈簧具有較大的內徑可以收縮使幕布可以再下拉一段距離，這樣第一下拉長度加上因開關彈簧的形變造成幕布下拉的一段距離就保證了下拉長度大於第一回收長度，藉此滾珠能夠從自鎖點滑至拐點，並且能夠從拐點順利滑出第二連通路徑，以避免卡死於拐點處。在又一實施例中的投影幕裝置中的第一下拉長度係大於或等於第一回收長度，同樣亦具有足夠的距離使得滾珠從自鎖點滑出拐點，並且能夠從拐點順利滑出第二連通路徑，而避免出現卡死現象。 A sidewall of the track of the projection screen device of the embodiment of the present invention is provided with a slot directly connecting the inflection point and the first communication path. The first recovery length is greater than the first pull-down length of the ball sliding from the self-locking point to the inflection point. When unlocked, the ball can slide from the self-locking point to the inflection point, and then directly enter the first communication path via the slotting. To avoid getting stuck at the turning point. In another embodiment, the projection screen device has a first switch spring having a larger inner diameter, which can selectively stop the self-locking core from rotating in a clockwise direction with respect to the self-locking shaft, so although the first recovery length is larger than the first A pull-down length, but after the ball reaches the inflection point, the first switch spring can be retracted because the first inner diameter of the switch spring can be retracted, so that the first pull-down length plus a section of the curtain pulled down due to the deformation of the switch spring The distance ensures that the pull-down length is greater than the first recovery length, whereby the ball can slide from the self-locking point to the inflection point and can smoothly slide out of the second communication path from the inflection point to avoid jamming at the inflection point. In a further embodiment, the first pull-down length in the projection screen device is greater than or equal to the first recovery length, and also has a sufficient distance so that the ball slides out of the inflection point from the self-locking point, and can smoothly slide out from the inflection point. Two connected paths to avoid jamming.
下列各實施例的說明是參考附加的圖式，用以例示本發明可用以實施之特定實施例。本發明所提到的方向用語，例如「上」、「下」、「前」、「後」、「左」、「右」等，僅是參考附加圖式的方向。因此，本發明以下實施例中所提到的方向用語是用來說明本發明，而非用來限制本發明。 The following description of the various embodiments is provided to illustrate the specific embodiments of the invention. The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", etc., are merely directions referring to the additional drawings. Therefore, the directional terms used in the following examples of the invention are intended to illustrate the invention and not to limit the invention.
請參照第2圖至第4圖所示之本發明一實施例的投影 幕裝置100，本實施例中的投影幕裝置100包含有：一投影幕布1、一收放機構2、一動力機構3、一自鎖機構4、一外殼6、一第一端蓋7及一第二端蓋8。外殼6係固定不動且呈細長筒狀結構，用來收容及保護收放機構2、動力機構3及自鎖機構4，投影幕布1亦能夠回收在外殼6內，或是自外殼6向外伸出至所需之固定位置，以供影像投影至其上。外殼6的兩端係由第一、第二端蓋7、8加以封密，以防止外物入內，確保投影幕裝置100能夠在一個安全穩定的工作環境中正常工作。 Please refer to the projection of an embodiment of the present invention shown in FIGS. 2 to 4 The projection screen device 100 of the present embodiment comprises: a projection screen 1, a retracting mechanism 2, a power mechanism 3, a self-locking mechanism 4, a casing 6, a first end cover 7 and a Second end cap 8. The outer casing 6 is fixed and has a slender cylindrical structure for receiving and protecting the retracting mechanism 2, the power mechanism 3 and the self-locking mechanism 4. The projection screen 1 can also be recovered in the outer casing 6 or extended from the outer casing 6. Exit to the desired fixed position for the image to be projected onto it. Both ends of the outer casing 6 are sealed by the first and second end covers 7, 8 to prevent foreign objects from entering, thereby ensuring that the projection screen apparatus 100 can work normally in a safe and stable working environment.
請參照第4圖至第5圖所示，投影幕裝置100的收放機構2係與投影幕布1相連接，並可沿著第一方向(如順時鐘方向)旋轉，以使投影幕布1自外殼6向外伸出；或是沿著與第一方向相反的第二方向(如逆時鐘方向)旋轉而回收投影幕布1，以使投影幕布1得以回收於外殼6內。在本實施例中，收放機構2包含一轉管20，呈長圓柱狀，用以支撐整個投影幕布1。轉管20係收容於外殼6內，並可於外殼6內轉動，以供回收或釋出投影幕布1。轉管20長度小於外殼6長度。 Referring to FIGS. 4 to 5, the retracting mechanism 2 of the projection screen device 100 is connected to the projection screen 1 and is rotatable along a first direction (eg, clockwise direction) so that the projection screen 1 is self-contained. The outer casing 6 projects outwardly; or the projection screen 1 is recovered by rotating in a second direction opposite to the first direction (e.g., counterclockwise) to allow the projection screen 1 to be recovered in the outer casing 6. In the present embodiment, the retracting mechanism 2 includes a rotating tube 20 having a long cylindrical shape for supporting the entire projection screen 1. The turret 20 is housed in the outer casing 6 and is rotatable within the outer casing 6 for recycling or releasing the projection screen 1. The length of the turret 20 is less than the length of the outer casing 6.
投影幕布1係呈長方形，具有一頂邊10、一底邊11及位於頂邊10與底邊11之間的畫面區域14，投影幕布1之頂邊10係製做成筒狀，套設連接於轉管20上，或是具有其他可結合固定於轉管20上的結構，以使得投影幕布1能夠捲繞於或貼附於轉管20的圓柱狀外表面上。投影幕布1之底邊11係固定連接於一拉桿12上，拉桿12係位於外殼6外部，一方面係藉其自身重量使得投影幕布1展開後保持 平坦，另一方面可阻止投影幕布1之底邊11進入外殼6內部。於拉桿12的中央位置設置有一拉環13，以便於操作者手拉投影幕布1。 The projection screen 1 is rectangular, and has a top edge 10, a bottom edge 11 and a picture area 14 between the top edge 10 and the bottom edge 11. The top edge 10 of the projection screen 1 is formed into a cylindrical shape, and the sleeve is connected. On the turret 20, there are other structures that can be combined and fixed to the turret 20 to enable the projection screen 1 to be wound or attached to the cylindrical outer surface of the turret 20. The bottom edge 11 of the projection screen 1 is fixedly connected to a pull rod 12, and the pull rod 12 is located outside the outer casing 6. On the one hand, the projection screen 1 is unfolded after being unfolded by its own weight. Flat, on the other hand, prevents the bottom edge 11 of the projection screen 1 from entering the interior of the casing 6. A pull ring 13 is disposed at a central position of the pull rod 12 to facilitate the operator to manually project the screen 1.
請參照第4至6B圖所示，動力機構3係與收放機構2相連接，用以提供一回收動力給收放機構2。在本實施例中，動力機構3係安裝於轉管20內部，包含有：一扭力彈簧30、一支撐軸31及一連接座32。扭力彈簧30具有第一引腳301及第二引腳302。支撐軸31係一管狀長軸，可由鋁管或任何適當材質的硬質管件製作之，具有第一支撐末端311與第二支撐末端312。於支撐軸31上靠近第一支撐末端311處形成有一通孔313，貫穿過支撐軸31之管狀外壁(未標示)而與其內部軸孔(未顯示)相連通。連接座32係呈圓柱狀，其可轉動地套置於支撐軸31之第二支撐末端312上，因此連接座32可相對於支撐軸31轉動。連接座32的圓柱狀外側表面上設置有一溝槽320及一位於溝槽320內的凸肋321，連接座32的一圓柱端面上設置有一凹槽322。扭力彈簧30之第一引腳301貫穿過支撐軸31上的通孔313而固定於支撐軸31上，扭力彈簧30之第二引腳302則套接於連接座32的凸肋321上並容置於溝槽320內，因此扭力彈簧30係設置於連接座33與支撐軸31之間。 Referring to Figures 4 to 6B, the power mechanism 3 is coupled to the retractable mechanism 2 for providing a recovery power to the retractable mechanism 2. In the present embodiment, the power mechanism 3 is mounted inside the rotating tube 20 and includes a torsion spring 30, a support shaft 31 and a connecting seat 32. The torsion spring 30 has a first pin 301 and a second pin 302. The support shaft 31 is a tubular long shaft and can be made of an aluminum tube or any suitable hard material of the material, and has a first support end 311 and a second support end 312. A through hole 313 is formed in the support shaft 31 near the first support end 311, and penetrates through a tubular outer wall (not shown) of the support shaft 31 to communicate with an internal shaft hole (not shown). The connecting seat 32 is cylindrical and rotatably sleeved on the second supporting end 312 of the support shaft 31, so that the connecting seat 32 is rotatable relative to the support shaft 31. A cylindrical outer surface of the connecting seat 32 is provided with a groove 320 and a convex rib 321 located in the groove 320. A cylindrical end surface of the connecting seat 32 is provided with a groove 322. The first pin 301 of the torsion spring 30 is fixed to the support shaft 31 through the through hole 313 of the support shaft 31, and the second pin 302 of the torsion spring 30 is sleeved on the rib 321 of the connecting seat 32 and accommodated. The torque spring 30 is disposed between the connecting seat 33 and the support shaft 31.
動力機構3與收放機構2係藉由連接座32與轉管20相連接而連接在一起。詳言之，一銷釘(未圖示)貫穿過轉管20上的一螺絲孔21(第5圖)，再***至連接座32上的凹槽322內，以使得連接座32與轉管20銷接於一起，因此連接座32與轉管20可一起轉動，藉此將動力機構3與收放 機構2結合在一起。當投影幕布1下拉或外伸釋放時，轉管20會沿著第一方向(如順時鐘方向)轉動，由於連接座32與轉管20銷接在一起，因此連接座32亦會隨著轉管20做順時鐘方向轉動。此時，扭力彈簧30之第二引腳302會隨著連接座32一起轉動，第一引腳301則固定於支撐軸31上，故扭力彈簧30會發生變形，蓄積彈力位能而具有回收動力。當釋放投影幕布1時，在扭力彈簧30之回收動力所產生的恢復力的作用下，連接座32會沿著逆時鐘方向轉動，而轉管20也會被連接座32帶動而逆時鐘方向轉動，因之而將投影幕布1收回至外殼6內。 The power mechanism 3 and the retracting mechanism 2 are connected by being connected to the rotating pipe 20 by the connecting seat 32. In detail, a pin (not shown) extends through a screw hole 21 (Fig. 5) on the rotating tube 20, and is inserted into the recess 322 on the connecting seat 32, so that the connecting seat 32 and the rotating tube 20 are The pins are connected together, so the connecting seat 32 and the rotating tube 20 can be rotated together, thereby retracting the power mechanism 3 Agency 2 is combined. When the projection screen 1 is pulled down or extended, the rotating tube 20 will rotate in the first direction (such as clockwise direction). Since the connecting seat 32 and the rotating tube 20 are pinned together, the connecting seat 32 will also rotate. The tube 20 is rotated in a clockwise direction. At this time, the second pin 302 of the torsion spring 30 rotates together with the connecting seat 32, and the first pin 301 is fixed on the support shaft 31, so the torsion spring 30 is deformed, and the elastic force energy is accumulated to recover the power. . When the projection screen 1 is released, the connecting seat 32 is rotated in the counterclockwise direction by the restoring force generated by the recovered power of the torsion spring 30, and the rotating tube 20 is also driven by the connecting seat 32 to rotate in the counterclockwise direction. Therefore, the projection screen 1 is retracted into the outer casing 6.
在本實施例中，扭力彈簧30係由螺旋彈簧所構成，套設於支撐軸31上，因此透過設定扭力彈簧30的有效圈數，即可調整扭力彈簧30所會產生的回收動力及由該回收動力所產生之恢復力的大小。 In the present embodiment, the torsion spring 30 is formed by a coil spring and is sleeved on the support shaft 31. Therefore, by recovering the effective number of turns of the torsion spring 30, the recovery power generated by the torsion spring 30 can be adjusted and The amount of resilience generated by the recovery of power.
請參照第4圖、第7圖至第10B圖所示，自鎖機構4係與收放機構2相連接，用以將投影幕布1定位於任何選定的位置上。自鎖機構4與收放機構2一起設置於轉管20內，並靠近於第一端蓋7處。自鎖機構4包含有：一自鎖軸40、一自鎖芯41、一自鎖外套42，以及二滾珠43(圖中僅顯示出一滾珠)，其中自鎖軸40、自鎖芯41及自鎖外套42均由耐磨塑膠材質製成。自鎖機構4與收放機構2係藉由自鎖外套42與轉管20相連接而連接在一起，自鎖外套42與轉管20的詳細連接方式容後所述。 Referring to FIG. 4 and FIG. 7 to FIG. 10B, the self-locking mechanism 4 is coupled to the retracting mechanism 2 for positioning the projection screen 1 at any selected position. The self-locking mechanism 4 is disposed in the rotating pipe 20 together with the retracting mechanism 2 and is adjacent to the first end cover 7. The self-locking mechanism 4 includes: a self-locking shaft 40, a self-locking core 41, a self-locking jacket 42, and two balls 43 (only one ball is shown), wherein the self-locking shaft 40, the self-locking core 41 and The self-locking jacket 42 is made of a wear-resistant plastic material. The self-locking mechanism 4 and the retracting mechanism 2 are connected together by the self-locking outer casing 42 and the rotating pipe 20, and the detailed connection manner of the self-locking outer casing 42 and the rotating pipe 20 is described later.
自鎖軸40具有第一末端401與第二末端402，自鎖軸40之第一末端401係呈多邊形柱體結構，例如第8圈中所 示之四稜柱體結構，***於第一端蓋7內部所設之互補形狀的柱孔71(如第8圖中所示的四稜柱孔)中，而固定連接於第一端蓋7上，因此在投影幕裝置100的使用過程中，即在投影幕布1的釋放及回收過程中，自鎖軸40始終保持固定靜止狀態。自鎖軸40之第二末端402係呈圓柱狀，與動力機構3之支撐軸31之第一支撐末端311固定連接，因此支撐軸31亦是始終保持固定靜止狀態。在本實施例中，自鎖軸40之第二末端402***支撐軸31之第一支撐末端311的內部軸孔內，並藉由扭力彈簧30之第一引腳301貫穿過支撐軸31上的通孔313及自鎖軸40上的銷釘孔403，將二者固定連接於一起。在本實施例中，自鎖軸40與支撐軸31二者係結合在一起，並共同設置於轉管20內，故二者之長度總和不大於轉管20之長度。 The self-locking shaft 40 has a first end 401 and a second end 402. The first end 401 of the self-locking shaft 40 has a polygonal cylindrical structure, for example, in the eighth circle. The quadrangular prism structure is inserted into the complementary shaped column hole 71 (such as the quadrangular prism hole shown in FIG. 8) provided inside the first end cover 7, and is fixedly connected to the first end cover 7, Therefore, during use of the projection screen apparatus 100, that is, during the release and recovery of the projection screen 1, the self-locking shaft 40 is always maintained in a stationary state. The second end 402 of the self-locking shaft 40 has a cylindrical shape and is fixedly coupled to the first support end 311 of the support shaft 31 of the power mechanism 3, so that the support shaft 31 is also always fixed and stationary. In the present embodiment, the second end 402 of the self-locking shaft 40 is inserted into the inner shaft hole of the first support end 311 of the support shaft 31, and the first pin 301 of the torsion spring 30 penetrates through the support shaft 31. The through hole 313 and the pin hole 403 on the self-locking shaft 40 fix the two together. In the present embodiment, the self-locking shaft 40 and the support shaft 31 are coupled together and disposed together in the rotating tube 20, so the sum of the lengths of the two is not greater than the length of the rotating tube 20.
除了透過扭力彈簧30之第一引腳301同時貫穿過支撐軸31之通孔313及自鎖軸40之鎖釘孔403以外，亦可於支撐軸31上另外設置銷釘孔(未顯示)，對齊於自鎖軸40上的銷釘孔403，並以一銷釘(未顯示)依次穿過支撐軸31的銷釘孔與自鎖軸40的銷釘孔403，而將二者銷接在一起。在其他不同的實施例中，自鎖軸40與支撐軸31間亦可採用另外的連接方式，例如自鎖軸40之第二末端402的圓柱狀外表面可與支撐軸31之第一支撐末端311的內部軸孔採用干涉配合，而將二者直接連接。又或者，自鎖機構4之自鎖軸40與動力機構3之支撐軸31直接設置成一體而成為一共用軸。 In addition to the through hole 313 of the support shaft 31 and the locking hole 403 of the self-locking shaft 40 through the first pin 301 of the torsion spring 30, a pin hole (not shown) may be additionally disposed on the support shaft 31, and the alignment may be performed. The pin holes 403 on the self-locking shaft 40 are sequentially passed through the pin holes of the support shaft 31 and the pin holes 403 of the self-locking shaft 40 by a pin (not shown) to pin the two together. In other different embodiments, an additional connection may be used between the self-locking shaft 40 and the support shaft 31. For example, the cylindrical outer surface of the second end 402 of the self-locking shaft 40 may be coupled to the first support end of the support shaft 31. The inner shaft hole of the 311 is an interference fit, and the two are directly connected. Alternatively, the self-locking shaft 40 of the self-locking mechanism 4 and the support shaft 31 of the power mechanism 3 are directly disposed integrally to form a common shaft.
自鎖芯41係大約略呈圓柱狀的構件，套置於自鎖軸40 上。自鎖芯41的圓柱狀外側表面設置有至少一組內滾珠軌道44，內滾珠軌道44具有複數個凹槽結構，該些凹槽形成有相貫通之一第一連通路徑與一第二連通路徑。在本實施例中，自鎖芯41的外側表面上設有三組內滾珠軌道44，每一組內滾珠軌道44上均設有一自鎖點。在本實施例中，三組內滾珠軌道44係以自鎖芯41之軸線成120度旋轉對稱，且三組內滾珠軌道44之結構均相同，因此圖式中僅顯示出其中一組內滾珠軌道44，下文將以該組內滾珠軌道44為例對其結構作詳細說明，而對於其他內滾珠軌道就不予贅述。 The self-locking core 41 is a substantially cylindrical member that is placed on the self-locking shaft 40. on. The cylindrical outer surface of the self-locking core 41 is provided with at least one inner ball track 44, and the inner ball track 44 has a plurality of groove structures formed with a first communication path and a second communication path. In the present embodiment, three sets of inner ball tracks 44 are disposed on the outer side surface of the self-locking core 41, and each of the inner ball tracks 44 is provided with a self-locking point. In this embodiment, the three sets of inner ball tracks 44 are 120 degrees rotationally symmetric with respect to the axis of the self-locking core 41, and the structures of the three sets of inner ball tracks 44 are the same, so only one set of inner balls is shown in the drawing. The structure of the track 44 will be described in detail below by taking the ball track 44 of the group as an example, and will not be described for other inner ball tracks.
如第10A圖所示，內滾珠軌道44之複數凹槽具有連通之一斜線凹槽440、一第一曲線凹槽441、一第二曲線凹槽442、一第一定位凹槽443、一第二定位凹槽446、一第三曲線凹槽444及一第四曲線凹槽445，其中第一曲線凹槽441及第四曲線凹槽445係環繞著自鎖芯41的外側表面設置，而斜線凹槽440則以相對於自鎖芯41之軸線成傾斜狀連通於第一曲線凹槽441及第四曲線凹槽445之間，構成第一及第四曲線凹槽441、445間的第一連通路徑。第一定位凹槽443構成內滾珠軌道44上的自鎖點，第二定位凹槽446構成內滾珠軌道44上的拐點，而拐點位於第一定位凹槽443與第三曲線凹槽444之間，且第一、第二定位凹槽443、446係設置於第一曲線凹槽441及第四曲線凹槽445之間，並透過第二曲線凹槽442及第三曲線凹槽443分別連接至第一曲線凹槽441及第四曲線凹槽445上，而構成一連通於第一及第四曲線凹槽441、445之間 的第二連通路徑。第一曲線凹槽441上具有一突出導引部4410，用以於逆時鐘方向轉動時將滾珠43由第一曲線凹槽441導入至第二連通路徑內。此處的逆時鐘方向轉動是發生於從順時鐘方向轉動而後又被定位停止轉動時的迴旋動作，請容後詳述。第四曲線凹槽445上亦具有一突出導引部4450，用以於順時鐘方向轉動時將滾珠43由第四曲線凹槽445導入至第一連通路徑(即斜線凹槽440)內。此處的順時鐘方向轉動是發生於由定位停止狀態轉變為向逆時鐘方向轉動時，需要先下拉投影幕布1，而使得轉管20及自鎖外套42一起順時鐘轉動一定角度，此部份將於下文進一步加以說明。 As shown in FIG. 10A, the plurality of grooves of the inner ball track 44 have a diagonal groove 440, a first curved groove 441, a second curved groove 442, a first positioning groove 443, and a first groove. The second positioning groove 446, the third curved groove 444 and the fourth curved groove 445, wherein the first curved groove 441 and the fourth curved groove 445 are disposed around the outer surface of the self-locking core 41, and the oblique line The groove 440 is connected to the first curved groove 441 and the fourth curved groove 445 in an inclined manner with respect to the axis of the self-locking core 41, and constitutes the first between the first and fourth curved grooves 441 and 445. Connected path. The first positioning groove 443 constitutes a self-locking point on the inner ball track 44, the second positioning groove 446 constitutes an inflection point on the inner ball track 44, and the inflection point is located between the first positioning groove 443 and the third curved groove 444. The first and second positioning grooves 443 and 446 are disposed between the first curved groove 441 and the fourth curved groove 445, and are respectively connected to the second curved groove 442 and the third curved groove 443 to The first curved groove 441 and the fourth curved groove 445 form a communication between the first and fourth curved grooves 441 and 445 The second connected path. The first curved groove 441 has a protruding guiding portion 4410 for guiding the ball 43 into the second communication path from the first curved groove 441 when rotating in the counterclockwise direction. Here, the counterclockwise rotation occurs when the rotation is performed from the clockwise direction and then the positioning is stopped. Please refer to it later. The fourth curved groove 445 also has a protruding guiding portion 4450 for guiding the ball 43 from the fourth curved groove 445 into the first communication path (ie, the oblique groove 440) when rotating in the clockwise direction. Here, the clockwise rotation occurs when the positioning is stopped to the counterclockwise direction, and the projection screen 1 needs to be pulled down first, so that the rotating tube 20 and the self-locking sleeve 42 are rotated clockwise by a certain angle. It will be further explained below.
進一步而言，斜線凹槽440係構成上述第一連通路徑，而第二曲線凹槽442、第一定位凹槽443、第二定位凹槽446及第三曲線凹槽444則構成上述第二連通路徑。第一連通路徑與第二連通路徑之間具有一軌道側壁447。位於第二連通路徑上的自鎖點(即第一定位凹槽443)與拐點(即第二定位凹槽446)之間具有第一下拉長度；自拐點至該第二連通路徑之與相鄰近該拐點之一路徑終端449之間具有第一回收長度。實質上，第一下拉長度係為第一定位凹槽443與第二定位凹槽446之間的展開長度，而第一回收長度係為第三曲線凹槽444之展開長度。在第一實施例中，於軌道側壁447上設置有一開槽448，用以直接連接拐點與第一連通路徑，即直接連通第二定位凹槽446與斜線凹槽440。在解鎖過程中，當出現拐點卡死現象時，滾珠43可以經過開槽448直接進入第一連通路徑。有關於 自鎖機構4的運作方式，下文中會進一步說明。 Further, the oblique groove 440 constitutes the first communication path, and the second curved groove 442, the first positioning groove 443, the second positioning groove 446 and the third curved groove 444 constitute the second Connected path. There is a track sidewall 447 between the first communication path and the second communication path. The self-locking point (ie, the first positioning groove 443) located on the second communication path and the inflection point (ie, the second positioning groove 446) have a first pull-down length; and the phase from the inflection point to the second communication path There is a first recycling length between the path terminals 449 adjacent one of the inflection points. In essence, the first pull-down length is the developed length between the first positioning groove 443 and the second positioning groove 446, and the first recovery length is the developed length of the third curved groove 444. In the first embodiment, a slot 448 is defined in the rail side wall 447 for directly connecting the inflection point with the first communication path, that is, directly connecting the second positioning recess 446 and the oblique groove 440. During the unlocking process, when an inflection point jam occurs, the ball 43 can directly enter the first communication path through the slot 448. Related to The mode of operation of the self-locking mechanism 4 will be further explained below.
為便於控制滾珠43在自鎖芯41之內滾珠軌道44上的行程，自鎖芯41係套置並固定於自鎖軸40上，而有關滾珠43行程與投影幕布1之收放關係及自鎖機構4之工作原理請容後詳述。在本實施例中，自鎖芯41係藉由第一、第二開關彈簧45、46將其固定於自鎖軸40上。詳言之，在自鎖芯41之兩側各安裝一開關彈簧45或46，例如在自鎖芯41之左側端面安裝一左旋式的第一開關彈簧45，在自鎖芯41之右側端面安裝一右旋式的第二開關彈簧46。當自鎖芯41受到一順時鐘方向的驅動力作用時，其中一開關彈簧(左旋式的第一開關彈簧45)可以制止自鎖芯41順時鐘轉動，而當自鎖芯41受到一逆時鐘方向的驅動力作用時，另一開關彈簧(右旋式的第二開關彈簧46)可以制止自鎖芯41逆時鐘轉動，藉此自鎖芯41可以大致上保持固定靜止狀態。 In order to facilitate the control of the stroke of the ball 43 on the ball track 44 in the self-locking core 41, the self-locking core 41 is sleeved and fixed on the self-locking shaft 40, and the relationship between the stroke of the ball 43 and the projection screen 1 and The working principle of the lock mechanism 4 will be described in detail later. In the present embodiment, the self-locking core 41 is fixed to the self-locking shaft 40 by the first and second switching springs 45, 46. In detail, a switch spring 45 or 46 is mounted on each side of the self-locking core 41. For example, a left-handed first switch spring 45 is mounted on the left end surface of the self-locking core 41, and is mounted on the right end surface of the self-locking core 41. A right-handed second switch spring 46. When the self-locking core 41 is subjected to a clockwise driving force, one of the switching springs (the left-handed first switching spring 45) can stop the self-locking core 41 from rotating clockwise, and when the self-locking core 41 receives a counterclockwise When the driving force of the direction acts, the other switching spring (the right-handed second switching spring 46) can stop the self-locking core 41 from rotating counterclockwise, whereby the self-locking core 41 can be kept substantially in a stationary state.
在其他實施例中，自鎖芯41亦可藉由其他方式固定於自鎖軸40上，或者在另外的實施例中，自鎖芯41亦能以可轉動的方式套置於自鎖軸40上，而仍能夠實現其原有的功能，只是滾珠43在內滾珠軌道44內的行程會變得複雜一些。 In other embodiments, the self-locking core 41 can also be fixed to the self-locking shaft 40 by other means, or in other embodiments, the self-locking core 41 can also be rotatably sleeved on the self-locking shaft 40. Up, while still achieving its original function, only the stroke of the ball 43 in the inner ball track 44 becomes complicated.
自鎖外套42係可轉動地套置於自鎖芯41的外側表面上，具有與自鎖芯41之外側表面相對的圓柱狀內側表面，其上對應於三組內滾珠軌道44設置有三組外滾珠軌道420，三組外滾珠軌道420係以自鎖外套42的軸線成120度旋轉對稱。在本實施例中，每一組外滾珠軌道420均是 由一沿軸線方向延伸的直線凹槽所構成。自鎖外套42具有一第一外套末端421及一第二外套末端422，在第一外套末端421的附近處設有一螺絲孔423，貫穿於自鎖外套42之圓柱狀外側表面與內側表面之間。一銷釘(未顯示)貫穿過一設於轉管20上的螺絲孔22及自鎖外套42的螺絲孔423，將自鎖外套42固定於轉管20上，因此自鎖外套42係與轉管20一起轉動，而自鎖芯41則大致上保持固定不動，換言之在轉管20轉動時，自鎖外套42會相對於自鎖芯41轉動。 The self-locking outer sleeve 42 is rotatably sleeved on the outer side surface of the self-locking core 41, and has a cylindrical inner side surface opposite to the outer side surface of the self-locking core 41, on which three sets of inner ball tracks 44 are provided with three sets of outer The ball track 420, the three sets of outer ball tracks 420 are 120 degrees rotationally symmetric with respect to the axis of the self-locking jacket 42. In this embodiment, each set of outer ball tracks 420 is It consists of a linear groove extending in the axial direction. The self-locking outer sleeve 42 has a first outer sleeve end 421 and a second outer sleeve end 422. A screw hole 423 is formed in the vicinity of the first outer sleeve end 421 to penetrate between the cylindrical outer surface and the inner side surface of the self-locking outer sleeve 42. . A pin (not shown) extends through a screw hole 22 provided in the rotating pipe 20 and a screw hole 423 of the self-locking outer casing 42 to fix the self-locking outer casing 42 to the rotating pipe 20, so the self-locking outer casing 42 and the rotating pipe The 20 rotates together, and the self-locking core 41 remains substantially stationary, in other words, the self-locking outer sleeve 42 rotates relative to the self-locking core 41 as the rotary tube 20 rotates.
滾珠43係設置於自鎖芯41與自鎖外套42之間，嵌入並滑動於內滾珠軌道44及外滾珠軌道420內。由於在本實施例中，自鎖芯41上對稱設置有三組內滾珠軌道44，且自鎖外套42對稱設置有三組相對應的外滾珠軌道420，因此實際上，每組相對應之內滾珠軌道44及外滾珠軌道420中均可設置一滾珠43，形成三個滾珠43同時各自滑動於對應之內滾珠軌道44及外滾珠軌道420中的實施態樣。三個滾珠43同時運轉，一旦任一滾珠43出現問題，例如行程不一而被卡死，就必須拆卸整個投影幕裝置100才能夠進行維修。在其他實施例中，自鎖機構4中亦可採用兩個滾珠43同時運轉，不但可以確保自鎖機構4能產生足夠的自鎖力，具有較高的使用安全性，而且兩個滾珠43滑動及自鎖工作的同步性會更佳。 The ball 43 is disposed between the self-locking core 41 and the self-locking jacket 42 and is fitted and slid into the inner ball track 44 and the outer ball track 420. Since in the present embodiment, three sets of inner ball tracks 44 are symmetrically disposed on the self-locking core 41, and the self-locking outer casings 42 are symmetrically disposed with three sets of corresponding outer ball tracks 420, in practice, each set of corresponding inner ball tracks A ball 43 may be disposed in each of the 44 and outer ball tracks 420 to form an embodiment in which the three balls 43 are simultaneously slid in the corresponding inner ball track 44 and outer ball track 420. The three balls 43 are operated at the same time. Once any of the balls 43 has a problem, for example, the stroke is stuck, the entire projection screen device 100 must be disassembled for maintenance. In other embodiments, the two balls 43 can be simultaneously operated by the self-locking mechanism 4, which not only ensures that the self-locking mechanism 4 can generate sufficient self-locking force, has high use safety, and the two balls 43 slide. And the synchronization of the self-locking work will be better.
透過滾珠43於內外滾珠軌道44、420間的移動而選擇性地卡固於自鎖點處，可使得自鎖外套42選擇性地與自鎖芯41鎖固在一起，因之而將轉管20固定於所需的位置 處。詳言之，當自鎖外套42未被滾珠43鎖定於自鎖芯41上時，自鎖外套42可以由轉管20加以帶動而相對於自鎖芯41轉動，而當自鎖外套42被滾珠43鎖定於自鎖芯41上時，自鎖外套42可以牽制轉管20，使得轉管20無法再行轉動。在投影幕布1的回收及釋放過程中，二滾珠43會分別在各自的內及外滾珠軌道44及420內滑動，並選擇性地進行自鎖作業。 The ball 43 is selectively locked at the self-locking point by the movement of the ball 43 between the inner and outer ball tracks 44, 420, so that the self-locking jacket 42 can be selectively locked with the self-locking core 41, thereby turning the tube 20 fixed at the desired location At the office. In detail, when the self-locking jacket 42 is not locked by the ball 43 to the self-locking core 41, the self-locking jacket 42 can be driven by the rotating pipe 20 to rotate relative to the self-locking core 41, and when the self-locking jacket 42 is balled When the lock 43 is locked on the self-locking core 41, the self-locking outer sleeve 42 can pinch the rotary tube 20 so that the rotary tube 20 cannot be rotated. During the recovery and release of the projection screen 1, the two balls 43 slide in the respective inner and outer ball tracks 44 and 420, respectively, and selectively perform self-locking operations.
下文將以第一實施例所揭示的結構為例，對投影幕布1的下拉(釋放)、定位、解鎖及回收原理作一完整性的描述。 Hereinafter, the structure disclosed in the first embodiment will be taken as an example to describe the integrity of the pull-down (release), positioning, unlocking and recycling principles of the projection screen 1.
當操作者下拉投影幕布1時，投影幕布1帶動轉管20順時鐘轉動，扭力彈簧30會產生變形且蓄積一定的回收動力，轉管20帶動自鎖外套42一起順時鐘轉動。在此同時，自鎖結構內的滾珠43會在自鎖外套42之直線凹槽(即外滾珠軌道420)內左右滑動，且滾珠43會受到自鎖外套42之直線凹槽420之驅動，而從自鎖芯41之內滾珠軌道44的第四曲線凹槽445中滑過並在第四曲線凹槽445與斜線凹槽4402交界處滑入斜線凹槽440(即進入第一連通路徑)中，然後經由第一連通路徑滑入第一曲線凹槽441內，並於第一曲線凹槽441中環繞運動。 When the operator pulls down the projection screen 1, the projection screen 1 drives the rotating tube 20 to rotate clockwise, the torsion spring 30 deforms and accumulates a certain recovery power, and the rotating tube 20 drives the self-locking jacket 42 to rotate clockwise. At the same time, the balls 43 in the self-locking structure will slide left and right in the linear groove of the self-locking outer casing 42 (ie, the outer ball track 420), and the balls 43 will be driven by the linear grooves 420 of the self-locking outer casing 42. Sliding through the fourth curved groove 445 of the ball track 44 in the self-locking core 41 and sliding into the oblique groove 440 at the boundary between the fourth curved groove 445 and the oblique groove 4402 (ie, entering the first communication path) Then, it slides into the first curved groove 441 via the first communication path and moves around in the first curved groove 441.
投影幕布1向下展開而欲將其定位時，操作者停止下拉，轉管20會在扭力彈簧30之恢復力的作用下回轉(即逆時針旋轉)，滾珠43會從第一曲線凹槽441進入第二連通路徑中，詳言之，滾珠43進入第二曲線凹槽442再滑至第一定位凹槽443(自鎖點)內，此時滾珠43被卡止於自鎖芯 41之第一定位凹槽443內，滾珠43不能夠繼續左右滑移於自鎖外套42之直線凹槽420內，從而制止自鎖外套42回轉，轉管20受自鎖外套42的牽制，亦不能回轉，藉此將投影幕布1定位。本發明之實施例之投影幕裝置100藉由自鎖結構可以實現投影幕布1的隨意定位，投影幕布1之自鎖位置係可被任意選定而使其停留在任何位置。 When the projection screen 1 is deployed downward and the user wants to position it, the operator stops pulling down, and the rotating tube 20 will rotate under the restoring force of the torsion spring 30 (ie, rotate counterclockwise), and the ball 43 will be from the first curved groove 441. Entering the second communication path, in detail, the ball 43 enters the second curved groove 442 and then slides into the first positioning groove 443 (self-locking point), at which time the ball 43 is locked to the self-locking core In the first positioning groove 443 of the 41, the ball 43 cannot continue to slide left and right in the linear groove 420 of the self-locking jacket 42, thereby preventing the self-locking jacket 42 from rotating, and the rotating tube 20 is pinned by the self-locking jacket 42. It is not possible to swivel, thereby positioning the projection screen 1. The projection screen device 100 of the embodiment of the present invention can realize the random positioning of the projection screen 1 by the self-locking structure, and the self-locking position of the projection screen 1 can be arbitrarily selected to stay at any position.
當需要回收投影幕布1時，首先，操作者要輕輕下拉投影幕布1，轉管20帶動自鎖外套42一起順時針轉動一定角度，直線凹槽420驅動滾珠43滑動，使得滾珠43從第一定位凹槽443(自鎖點)內脫出，滑入第二定位凹槽446(拐點)內，在正常情況下，此時操作者可以完全釋放投影幕布1，在扭力彈簧30之恢復力的作用下，轉管20帶動自鎖外套42一起逆時鐘轉動，滾珠43會自第二定位凹槽446滑出，並經過第三曲線凹槽444進入第四曲線凹槽445，投影幕布1繼續向上回收，滾珠43會在第四曲線凹槽445中環繞運動，直至投影幕布1回收完畢。 When it is necessary to recover the projection screen 1, first, the operator should gently pull down the projection screen 1, the rotating tube 20 drives the self-locking jacket 42 to rotate clockwise by a certain angle, and the linear groove 420 drives the ball 43 to slide, so that the ball 43 is from the first The positioning groove 443 (self-locking point) is disengaged and slides into the second positioning groove 446 (inflection point). Under normal circumstances, the operator can completely release the projection screen 1 at the restoring force of the torsion spring 30. Under the action, the rotating tube 20 drives the self-locking jacket 42 to rotate counterclockwise, the ball 43 slides out from the second positioning groove 446, and enters the fourth curved groove 445 through the third curved groove 444, and the projection screen 1 continues upward. After recycling, the ball 43 will move around in the fourth curved groove 445 until the projection screen 1 is recovered.
惟，在解自鎖時，滾珠43常會卡止於第二定位凹槽446內，此時操作者需稍微加大解鎖用之拉力，使得滾珠43從第二定位凹槽446經由開槽448直接進入第一連通路徑中，然後自斜線凹槽440滑至第一曲線凹槽441內環繞運動。最後，操作者完全釋放投影幕布1，在扭力彈簧30之恢復力的作用下，轉管20帶動自鎖外套42一起逆時鐘轉動，滾珠43會自第一曲線凹槽441經由第二、第三曲線凹槽442、444進入第四曲線凹槽445，投影幕布1繼續向上回收，滾珠43會在第四曲線凹槽445中環繞運動，直至 投影幕布1回收完畢。 However, when the self-locking is performed, the ball 43 is often locked in the second positioning groove 446. At this time, the operator needs to slightly increase the pulling force for unlocking, so that the ball 43 directly enters from the second positioning groove 446 via the slot 448. In a connected path, the slanted groove 440 then slides into the first curved groove 441 to move around. Finally, the operator completely releases the projection screen 1. Under the action of the restoring force of the torsion spring 30, the rotating tube 20 drives the self-locking jacket 42 to rotate counterclockwise, and the ball 43 will pass through the second and third portions from the first curved groove 441. The curved grooves 442, 444 enter the fourth curved groove 445, the projection screen 1 continues to be recovered upward, and the balls 43 will move around in the fourth curved groove 445 until The projection screen 1 is recycled.
在第一實施例之解鎖過程中，投影幕布1係從拐點位置回收至第三曲線凹槽444的末端位置(此末端位置係指第二連通路徑之路徑終端449)，於拐點位置至第三曲線凹槽444的末端位置回收的距離稱為第一回收長度，於本實施例中，第一回收長度係大於滾珠43從自鎖點(即第一定位凹槽443)至拐點(即第二定位凹槽446)處之第一下拉長度。故，第一下拉長度不足以使得滾珠43脫離第三曲線凹槽444的末端位置而解除自鎖，滾珠43從自鎖點滑至拐點，然後再經由開槽448直接進入第一連通路徑中。藉此，本實施例之投影幕裝置100可以避免滾珠43卡死於拐點處。 In the unlocking process of the first embodiment, the projection screen 1 is recovered from the inflection point position to the end position of the third curved groove 444 (this end position refers to the path terminal 449 of the second communication path), at the inflection point position to the third The distance recovered by the end position of the curved groove 444 is referred to as a first recovery length. In this embodiment, the first recovery length is greater than the ball 43 from the self-locking point (ie, the first positioning groove 443) to the inflection point (ie, the second Positioning the first pull down length at the recess 446). Therefore, the first pull-down length is insufficient to release the ball 43 from the end position of the third curved groove 444 to release the self-locking, the ball 43 slides from the self-locking point to the inflection point, and then directly enters the first communication path via the slot 448. in. Thereby, the projection screen apparatus 100 of the present embodiment can prevent the balls 43 from being stuck at the inflection point.
請參照第11圖，其中顯示出本發明第二實施例的自鎖機構4，圖中元件標號及以下描述所採用的元件標號仍沿用第一實施例中之元件標號，以簡化說明。於第二實施例之自鎖機構4之軌道側壁447上並未設置開槽448(如第10B圖中所示)，而是將自鎖機構4的第一開關彈簧45之內徑設計為大於第二開關彈簧46之內徑(亦即第一開關彈簧45之圈數係小於第二開關彈簧46之圈數)，使得第一開關彈簧45能夠選擇性地制止自鎖芯41相對於自鎖軸40沿順時針方向(即第一方向)轉動，而第二開關彈簧46則能夠完全制止自鎖芯41相對於自鎖軸40沿逆時針方向(即第二方向)轉動，藉此防止出現拐點處卡死之現象。詳言之，當需要展開投影幕布1而正常下拉投影幕布1時，第一開關彈簧45能夠制止自鎖芯41相對於自鎖軸40沿順時針 方向。在展開及定位投影幕布1的過程中，第二實施例中的滾珠43(圖中未示，此處沿用第一實施例中的標號)之滑動路徑相同於第一實施例中的滾珠43之滑動路徑，投影幕布1得以順利展開並定位。在解自鎖時，若滾珠43卡止於第二定位凹槽446(拐點)內，操作者加大解鎖用之拉力，此時由於第一開關彈簧45之內徑較大，在較大拉力之作用下，自鎖芯41克服第一開關彈簧45與自鎖軸40之間的摩擦力，並相對於自鎖軸40沿順時針方向轉動一定角度，藉此可以保證第一下拉長度大於第一回收長度，可以使滾珠43從拐點完全脫離第三曲線凹槽444的末端而解除自鎖。最後，操作者完全釋放投影幕布1，在扭力彈簧30之恢復力的作用下，轉管20帶動自鎖外套42一起逆時鐘轉動，此時第二開關彈簧46能夠制止自鎖芯41相對於自鎖軸40沿逆時針方向，而滾珠43則於第四曲線凹槽445中環繞運動，直至投影幕布1回收完畢。當然，其他實施例之自鎖機構4可以同時採用第一實施例之開槽448結構及第二實施例之第一開關彈簧45之結構，以進一步提高自鎖機構4之使用安全性。 Referring to Fig. 11, there is shown a self-locking mechanism 4 of a second embodiment of the present invention. The component numbers in the drawings and the reference numerals used in the following description still follow the component numbers in the first embodiment to simplify the description. The slot 448 (as shown in FIG. 10B) is not disposed on the rail side wall 447 of the self-locking mechanism 4 of the second embodiment, but the inner diameter of the first switch spring 45 of the self-locking mechanism 4 is designed to be larger than The inner diameter of the second switch spring 46 (that is, the number of turns of the first switch spring 45 is smaller than the number of turns of the second switch spring 46), so that the first switch spring 45 can selectively stop the self-locking core 41 from being self-locking. The shaft 40 rotates in a clockwise direction (ie, a first direction), and the second switch spring 46 can completely prevent the self-locking core 41 from rotating in a counterclockwise direction (ie, a second direction) with respect to the self-locking shaft 40, thereby preventing occurrence of The phenomenon of stuck at the inflection point. In detail, when the projection screen 1 needs to be unfolded and the projection screen 1 is normally pulled down, the first switch spring 45 can stop the self-locking core 41 from being clockwise with respect to the self-locking shaft 40. direction. In the process of unfolding and positioning the projection screen 1, the sliding path of the balls 43 (not shown in the drawings, the reference numerals in the first embodiment herein) in the second embodiment is the same as that of the balls 43 in the first embodiment. With the sliding path, the projection screen 1 can be smoothly deployed and positioned. When the self-locking is performed, if the ball 43 is locked in the second positioning groove 446 (inflection point), the operator increases the pulling force for unlocking. At this time, since the inner diameter of the first switching spring 45 is large, the role of the pulling force is large. The self-locking core 41 overcomes the friction between the first switch spring 45 and the self-locking shaft 40 and rotates a certain angle with respect to the self-locking shaft 40 in a clockwise direction, thereby ensuring that the first pull-down length is greater than the first The length is recovered so that the ball 43 can be completely released from the inflection point from the end of the third curved groove 444 to release the self-locking. Finally, the operator completely releases the projection screen 1. Under the action of the restoring force of the torsion spring 30, the rotating tube 20 drives the self-locking sleeve 42 to rotate counterclockwise. At this time, the second switching spring 46 can stop the self-locking core 41 from being self-locked. The lock shaft 40 is in the counterclockwise direction, and the balls 43 are moved around in the fourth curved groove 445 until the projection screen 1 is recovered. Of course, the self-locking mechanism 4 of other embodiments can simultaneously adopt the structure of the slotted portion 448 of the first embodiment and the first switch spring 45 of the second embodiment to further improve the safety of use of the self-locking mechanism 4.
在第二實施例之解鎖過程中，投影幕布1係從拐點位置回收至第三曲線凹槽444的末端位置(此末端位置係指第二連通路徑之路徑終端449)，於拐點位置至第三曲線凹槽444的末端位置回收的距離稱為第一回收長度，第一回收長度係大於滾珠43從自鎖點(即第一定位凹槽443)至拐點(即第二定位凹槽446)處的第一下拉長度。故，第一下拉長度不足以使得滾珠43脫離第三曲線凹槽444的末端 位置而解除自鎖，滾珠43從自鎖點滑至拐點，然後通過強行轉動自鎖芯41，此時由於第一開關彈簧45之內徑較大，在較大拉力之作用下，自鎖芯41克服第一開關彈簧45與自鎖軸40之間的摩擦力，並相對於自鎖軸40沿順時針方向轉動一定角度，使投影幕布1再強行下拉一段距離，藉此可以保證第一下拉長度大於第一回收長度，可以使滾珠43從拐點完全脫離第三曲線凹槽444的末端而解除自鎖，使得滾珠43從第二定位凹槽446滑過第三曲線凹槽444的末端而進入第四曲線凹槽445內。最後，釋放投影幕布1，滾珠43會在第四曲線凹槽445中環繞運動，直至投影幕布1回收完畢。藉此，本實施例之投影幕裝置100可以避免滾珠43卡死於拐點處。 In the unlocking process of the second embodiment, the projection screen 1 is recovered from the inflection point position to the end position of the third curved groove 444 (this end position refers to the path terminal 449 of the second communication path), at the inflection point position to the third The distance recovered by the end position of the curved groove 444 is referred to as a first recovery length, and the first recovery length is greater than the ball 43 from the self-locking point (ie, the first positioning groove 443) to the inflection point (ie, the second positioning groove 446). The first pull down length. Therefore, the first pull-down length is insufficient to cause the ball 43 to detach from the end of the third curved groove 444 The position is released and the self-locking is released. The ball 43 slides from the self-locking point to the inflection point, and then the self-locking core 41 is forcibly rotated. At this time, since the inner diameter of the first switching spring 45 is large, the self-locking core is under the action of a large pulling force. 41 overcomes the friction between the first switch spring 45 and the self-locking shaft 40, and rotates a certain angle with respect to the self-locking shaft 40 in a clockwise direction, so that the projection screen 1 is forced to pull down a distance, thereby ensuring the first The pulling length is greater than the first recovery length, so that the ball 43 can be completely disengaged from the inflection point from the end of the third curved groove 444, so that the ball 43 slides from the second positioning groove 446 through the end of the third curved groove 444. Entering the fourth curved groove 445. Finally, the projection screen 1 is released, and the balls 43 are moved around in the fourth curved groove 445 until the projection screen 1 is recovered. Thereby, the projection screen apparatus 100 of the present embodiment can prevent the balls 43 from being stuck at the inflection point.
第三實施例之防卡死的設計不同於第一實施例之開槽448結構及第二實施例之採用內徑較大的第一開關彈簧45之設計。第三實施例之自鎖機構示意圖可參照第11圖中所示之第二實施例之自鎖機構4，以下對第三實施例之描述所採用的元件標號仍沿用第一實施例中之元件標號。在第三實施例中，自鎖點(即第一定位凹槽443)與拐點(即第二定位凹槽446)之間的第一下拉長度係大於或等於第三曲線凹槽444之回收長度(即第一回收長度)。 The anti-seize design of the third embodiment is different from the slotted 448 structure of the first embodiment and the design of the first switch spring 45 having a larger inner diameter than the second embodiment. For a schematic diagram of the self-locking mechanism of the third embodiment, reference may be made to the self-locking mechanism 4 of the second embodiment shown in FIG. 11, and the components used in the following description of the third embodiment still follow the components of the first embodiment. Label. In the third embodiment, the first pull-down length between the self-locking point (ie, the first positioning groove 443) and the inflection point (ie, the second positioning groove 446) is greater than or equal to the recovery of the third curved groove 444. Length (ie the first recycling length).
在第三實施例之解鎖過程中，投影幕布1係從拐點位置被回收至第三曲線凹槽444的末端位置(此末端位置係指第二連通路徑之路徑終端449)，於拐點位置至第三曲線凹槽444的末端位置亦形成第一回收長度，第一回收長度係小於或等於滾珠43從自鎖點(即第一定位凹槽443)至 拐點(即第二定位凹槽446)處之第一下拉長度。故，第一回收長度足以使得滾珠43從自鎖點滑至拐點，此時釋放投影幕布1，滾珠43會自拐點處滑出，並經過第三曲線凹槽444順利進入第四曲線凹槽445，投影幕布1繼續向上回收，滾珠43會在第四曲線凹槽445中環繞運動，直至投影幕布1回收完畢。藉此，本實施例之投影幕裝置100可以避免滾珠43卡死於拐點處。 In the unlocking process of the third embodiment, the projection screen 1 is recovered from the inflection point position to the end position of the third curved groove 444 (this end position refers to the path terminal 449 of the second communication path), at the inflection point position The end position of the three-curve groove 444 also forms a first recovery length, and the first recovery length is less than or equal to the ball 43 from the self-locking point (ie, the first positioning groove 443) The first pull down length at the inflection point (ie, the second positioning groove 446). Therefore, the first recovery length is sufficient for the ball 43 to slide from the self-locking point to the inflection point. At this time, the projection screen 1 is released, the ball 43 slides out from the inflection point, and smoothly enters the fourth curved groove 445 through the third curved groove 444. The projection screen 1 continues to be recovered upward, and the ball 43 will move around in the fourth curved groove 445 until the projection screen 1 is recovered. Thereby, the projection screen apparatus 100 of the present embodiment can prevent the balls 43 from being stuck at the inflection point.
綜上所述，本發明確已符合發明專利之要件，爰依法提出專利申請。惟，本發明已以較佳實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作些許之更動與潤飾，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。另外，本發明的任一實施例或申請專利範圍不須達成本發明所揭露之全部目的或優點或特點。此外，摘要部分和標題僅是用來輔助專利文件搜尋之用，並非用來限制本發明之權利範圍。 In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the present invention has been disclosed in the above preferred embodiments. However, it is not intended to limit the invention, and any one of ordinary skill in the art can make a few changes without departing from the spirit and scope of the invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention.
100‧‧‧投影幕裝置 100‧‧‧Projection screen device
1‧‧‧投影幕布 1‧‧‧Projection screen
10‧‧‧頂邊 10‧‧‧ top side
11‧‧‧底邊 11‧‧‧Bottom
12‧‧‧拉桿 12‧‧‧ lever
13‧‧‧拉環 13‧‧‧ Pull ring
14‧‧‧畫面區域 14‧‧‧Screen area
2‧‧‧收放機構 2‧‧‧Retracting agency
20‧‧‧轉管 20‧‧‧Transit
21、22‧‧‧螺絲孔 21, 22‧‧‧ screw holes
3‧‧‧動力機構 3‧‧‧Power Agency
30‧‧‧扭力彈簧 30‧‧‧Torque spring
301‧‧‧第一引腳 301‧‧‧First pin
302‧‧‧第二引腳 302‧‧‧second pin
31‧‧‧支撐軸 31‧‧‧Support shaft
311‧‧‧第一支撐末端 311‧‧‧First support end
312‧‧‧第二支撐末端 312‧‧‧second support end
313‧‧‧通孔 313‧‧‧through hole
32‧‧‧連接座 32‧‧‧Connecting Block
320‧‧‧溝槽 320‧‧‧ trench
321‧‧‧凸肋 321‧‧‧ rib
322‧‧‧凹槽 322‧‧‧ Groove
4‧‧‧自鎖機構 4‧‧‧Self-locking mechanism
40‧‧‧自鎖軸 40‧‧‧Self-locking shaft
401‧‧‧第一末端 401‧‧‧ first end
402‧‧‧第二末端 402‧‧‧second end
403‧‧‧銷釘孔 403‧‧‧ pin hole
41‧‧‧自鎖芯 41‧‧‧Self-locking core
42‧‧‧自鎖外套 42‧‧‧Self-locking jacket
420‧‧‧外滾珠軌道 420‧‧‧Outer ball track
421‧‧‧第一外套末端 421‧‧‧ First coat end
422‧‧‧第二外套末端 422‧‧‧ second coat end
423‧‧‧螺絲孔 423‧‧‧ screw holes
43‧‧‧滾珠 43‧‧‧ balls
44‧‧‧內滾珠軌道 44‧‧‧inner ball track
440‧‧‧斜線凹槽 440‧‧‧Slash groove
441‧‧‧第一曲線凹槽 441‧‧‧first curve groove
4410‧‧‧導引部 4410‧‧‧Guide
442‧‧‧第二曲線凹槽 442‧‧‧second curved groove
443‧‧‧第一定位凹槽(自鎖點) 443‧‧‧First positioning groove (self-locking point)
444‧‧‧第三曲線凹槽 444‧‧‧third curve groove
445‧‧‧第四曲線凹槽 445‧‧‧fourth curve groove
4450‧‧‧導引部 4450‧‧‧Guide
46‧‧‧第二定位凹槽(拐點) 46‧‧‧Second positioning groove (inflection point)
447‧‧‧軌道側壁 447‧‧‧ Track side wall
448‧‧‧開槽 448‧‧‧ slotting
449‧‧‧路徑終端 449‧‧‧Path terminal
45‧‧‧第一開關彈簧 45‧‧‧First switch spring
46‧‧‧第二開關彈簧 46‧‧‧Second switch spring
第1圖是習用手拉投影幕裝置的定位機構示意圖。 Figure 1 is a schematic diagram of a positioning mechanism of a conventional hand-drawing projection screen device.
第2圖是本發明一實施例之投影幕裝置之整體外部結構示意圖。 Fig. 2 is a schematic view showing the overall external structure of a projection screen apparatus according to an embodiment of the present invention.
第3圖是將第2圖中所示之外殼、第一及第二端蓋拆解之後的內部結構示意圖。 Fig. 3 is a schematic view showing the internal structure after disassembling the outer casing, the first and second end caps shown in Fig. 2.
第4圖是本發明一實施例之投影幕裝置之分解結構示意圖。 Figure 4 is a schematic exploded view of a projection screen apparatus according to an embodiment of the present invention.
第5圖是第4圖中所示之本發明一實施例之收放機構示意 圈。 Figure 5 is a schematic view of the retracting mechanism of an embodiment of the present invention shown in Figure 4 ring.
第6A圖是第4圖中所示之本發明一實施例之動力機構組合結構示意圖。 Fig. 6A is a schematic view showing the combined structure of the power mechanism of an embodiment of the present invention shown in Fig. 4.
第6B圓是第4圖中所示之本發明一實施例之動力機構分解結構示意圖。 The 6B circle is a schematic exploded view of the power mechanism of an embodiment of the present invention shown in FIG.
第7圖是本發明一實施例之動力機構與自鎖機構之分解示意圖。 Fig. 7 is an exploded perspective view showing the power mechanism and the self-locking mechanism according to an embodiment of the present invention.
第8圖是本發明一實施例之動力機構與自鎖機構之組裝示意圖，且圖中顯示出自鎖結構與第一端蓋之組裝關係。 Figure 8 is a schematic view showing the assembly of the power mechanism and the self-locking mechanism according to an embodiment of the present invention, and the assembly relationship between the self-locking structure and the first end cover is shown.
第9圖是本發明一實施例之自鎖機構之整體外部結構示意圖。 Figure 9 is a schematic view showing the overall external structure of the self-locking mechanism according to an embodiment of the present invention.
第10A及10B圖是本發明一實施例之自鎖機構之分解結構示意圖。 10A and 10B are schematic exploded views of the self-locking mechanism according to an embodiment of the present invention.
第11圖是本發明第二實施例之自鎖機構示意圖。 Figure 11 is a schematic view showing the self-locking mechanism of the second embodiment of the present invention.
4‧‧‧自鎖機構 4‧‧‧Self-locking mechanism
40‧‧‧自鎖軸 40‧‧‧Self-locking shaft
401‧‧‧第一末端 401‧‧‧ first end
402‧‧‧第二末端 402‧‧‧second end
403‧‧‧銷釘孔 403‧‧‧ pin hole
41‧‧‧自鎖芯 41‧‧‧Self-locking core
42‧‧‧自鎖外套 42‧‧‧Self-locking jacket
421‧‧‧第一外套末端 421‧‧‧ First coat end
422‧‧‧第二外套末端 422‧‧‧ second coat end
423‧‧‧螺絲孔 423‧‧‧ screw holes
43‧‧‧滾珠 43‧‧‧ balls
44‧‧‧內滾珠軌道 44‧‧‧inner ball track
440‧‧‧斜線凹槽 440‧‧‧Slash groove
441‧‧‧第一曲線凹槽 441‧‧‧first curve groove
4410‧‧‧導引部 4410‧‧‧Guide
442‧‧‧第二曲線凹槽 442‧‧‧second curved groove
443‧‧‧第一定位凹槽 443‧‧‧First positioning groove
444‧‧‧第三曲線凹槽 444‧‧‧third curve groove
445‧‧‧第四曲線凹槽 445‧‧‧fourth curve groove
4450‧‧‧導引部 4450‧‧‧Guide
446‧‧‧第二定位凹槽 446‧‧‧Second positioning groove
447‧‧‧軌道側壁 447‧‧‧ Track side wall
448‧‧‧開槽 448‧‧‧ slotting
449‧‧‧路徑終端 449‧‧‧Path terminal
45‧‧‧第一開關彈簧 45‧‧‧First switch spring
46‧‧‧第二開關彈簧 46‧‧‧Second switch spring
Claims (19)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW97126224A TWI381241B (en) | 2008-07-11 | 2008-07-11 | Projection screen apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW97126224A TWI381241B (en) | 2008-07-11 | 2008-07-11 | Projection screen apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201003292A TW201003292A (en) | 2010-01-16 |
| TWI381241B true TWI381241B (en) | 2013-01-01 |
Family
ID=44825514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW97126224A TWI381241B (en) | 2008-07-11 | 2008-07-11 | Projection screen apparatus |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI381241B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744261A (en) * | 2014-01-20 | 2014-04-23 | 蔡兆和 | Self-locking structure for screen |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3528733A (en) * | 1966-08-22 | 1970-09-15 | Brunswick Corp | Visual display system |
| EP1074882A1 (en) * | 1999-08-04 | 2001-02-07 | Agilent Technologies Inc | Method of forming an anti-reflection layer on a rear projection screen |
| WO2003069407A1 (en) * | 2002-02-18 | 2003-08-21 | Synelec Telecom Multimedia | Display screen and its method of production |
| US20050185271A1 (en) * | 2004-02-25 | 2005-08-25 | Delta Electronics, Inc. | Fabrication method for rear-projection screen |
| TWM291545U (en) * | 2005-11-18 | 2006-06-01 | Hon Hai Prec Ind Co Ltd | Projection display |
| CN2859586Y (en) * | 2005-11-07 | 2007-01-17 | 肖琦 | Photographing unipods support |
| TWM307771U (en) * | 2006-09-27 | 2007-03-11 | Starcon Technology Co Ltd | Improved structure of projector screen device |
| TWM309125U (en) * | 2006-07-21 | 2007-04-01 | Wan-Jiu Shiu | Light-shielding structure of projector cloth curtain |
| TWM321536U (en) * | 2007-05-17 | 2007-11-01 | Nano Prec Suzhou Co Ltd | Projector screen |
-
2008
- 2008-07-11 TW TW97126224A patent/TWI381241B/en active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3528733A (en) * | 1966-08-22 | 1970-09-15 | Brunswick Corp | Visual display system |
| EP1074882A1 (en) * | 1999-08-04 | 2001-02-07 | Agilent Technologies Inc | Method of forming an anti-reflection layer on a rear projection screen |
| WO2003069407A1 (en) * | 2002-02-18 | 2003-08-21 | Synelec Telecom Multimedia | Display screen and its method of production |
| US20050185271A1 (en) * | 2004-02-25 | 2005-08-25 | Delta Electronics, Inc. | Fabrication method for rear-projection screen |
| CN2859586Y (en) * | 2005-11-07 | 2007-01-17 | 肖琦 | Photographing unipods support |
| TWM291545U (en) * | 2005-11-18 | 2006-06-01 | Hon Hai Prec Ind Co Ltd | Projection display |
| TWM309125U (en) * | 2006-07-21 | 2007-04-01 | Wan-Jiu Shiu | Light-shielding structure of projector cloth curtain |
| TWM307771U (en) * | 2006-09-27 | 2007-03-11 | Starcon Technology Co Ltd | Improved structure of projector screen device |
| TWM321536U (en) * | 2007-05-17 | 2007-11-01 | Nano Prec Suzhou Co Ltd | Projector screen |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744261A (en) * | 2014-01-20 | 2014-04-23 | 蔡兆和 | Self-locking structure for screen |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201003292A (en) | 2010-01-16 |
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