201215297 發明說明： 【發明所屬之技術領域】 本發明係有關一種樞紐器，尤指一種兼具開輕關重及自動 閉鎖的樞紐器，適用於掀蓋式的電子裝置。 【先前技術】 掀蓋式電子裝置的棍紐器是裝設於螢幕和本體之間，用以 支撐螢幕，並使螢幕可相對本體樞轉開啟或閉合。由於筆記型 電腦等電子裝置的各種需求，樞紐器也發展出多樣的不同功 能’如自動閉鎖、開輕關重、止擋、防晃動…等等。 習知的樞紐器結構如TWI317402號發明專利「鉸鏈裝置 及行動機ϋ」所示’雜鏈裝置具有狀麟、彈域構及摩 擦機構。在關閉所打開的第一殼體和第二殼體時，使第一殼體 相對於第二殼體向閉合方向轉動，此時，當支揮部件經過第一 置夺支標^件借助於吸入機構而自動旋轉至閉合位置，從 科一殼體和第二殼體保持為閉合狀態。第—殼體相對於第二 向^柏觸，枚#轉姆于絲料向打開 部件的旋_，切料借祕摩_彳^^=止=擇 能夠使用第1體和第二殼體。私止在雜置，從而 上述的裴置雖然可達到自動閉 產、组裝時，吸入機.㈣ 目動彈起的功能，但生 機構及彈起機構是在w裝，而摩擦機構〖s 201215297 是x轴向的組裝，因此 高，且整置所佔用的空不大同的組裝方向，組裝難度較 【發明内容】 义 本發明的主要目的 » ,Λ Ρ在提供一種兼具開輕關重及自動閉 鎖的樞紐器，藉由第一 輪機構的旋轉凸輪與固定凸輪分別設 及自動門鎖!Γ部，使相對轉糾可產生自動触、開輕關重 及自動閉鎖的效果。201215297 Description of the Invention: [Technical Field] The present invention relates to a hinge, and more particularly to a hinge that combines light weight and automatic locking, and is suitable for a clamshell electronic device. [Prior Art] The cuff-type electronic device is mounted between the screen and the body to support the screen and to pivot or open the screen relative to the body. Due to the various needs of electronic devices such as notebook computers, the hub has also developed a variety of different functions, such as automatic locking, light weighting, stop, anti-swaying, and the like. The conventional hinge structure is as shown in the invention patent "Twing device and mobile phone" of TWI317402. The 'chain device has a rib, a bullet structure and a friction mechanism. When the opened first and second housings are closed, the first housing is rotated relative to the second housing in a closing direction, and at this time, when the supporting member passes the first locking member The suction mechanism automatically rotates to the closed position, and is kept closed from the first housing and the second housing. The first-shell is opposite to the second-direction, and the first and second shells are used for the opening of the wire. . The private end is miscellaneous, so that the above-mentioned device can achieve the function of automatic closing, assembly, and inhalation. (4) The function of the eye-bounce, but the living mechanism and the bounce mechanism are installed in the w, and the friction mechanism is s 201215297 It is an assembly of the x-axis, so it is high, and the assembly direction occupied by the whole is not the same, and the assembly difficulty is more than that of the invention. The main purpose of the invention is to provide a light weight and a light weight. The automatic locking hinge has the effect of automatically touching, opening and closing, and automatic locking by the automatic locking of the rotating cam and the fixed cam of the first wheel mechanism.
本發明的另一目沾，日丄 σ 、 ρ在提供一種兼具開輕關重及自動閉 '二紐n ’藉由第二凸輪機構使螢幕或蓋體在開啟過程可產 生停滞力，以支#螢幕或蓋體停止在任一角度。 本發明的另一目的， 鎖的樞紐器，其包含第— 機構均在同一軸向組裝， 用空間。 即在提供一種兼具開輕關重及自動閉 凸輪機構及第二凸輪機構，兩個凸輪 而使組裝更為容易快速，且可減少佔 為達上述目的，本發明兼具開輕關重及自動閉鎖的樞紐器 所採取的技術手段係包含： 一固定支架； 一旋轉支架； 一心轴，穿設於朗定支架及織轉支架，並固定於該固 定支架； ' ~ 一中空軸，套設於該心軸，並穿設於該固定支架，且其一 端固定於該旋轉支架，與該旋轉支朗轉； 、 201215297 一第一凸輪機構，套設於該心軸，其包含一固定凸輪、一 與該固定凸輪相接的旋轉凸輪，以及一第一彈性元件，該固〜 凸輪與旋轉凸輪的相接面分別設有軸向凸伸的凸部且該旋轉 凸輪套固於該中空軸，與該中空軸同轉；以及 一第二凸輪機構，套設於該心軸，其包含—固定凸輪、— 與該固定凸輪相接的旋轉凸輪，及一第二彈性元件，該固定凸 輪與該旋轉凸輪的相接面分別設有至少一凹凸部。 當旋轉支架相對於固定支架轉動開啟時，帶動第一凸輪機 構的旋轉凸輪轉動，當旋轉凸輪的凸部頂點越過固定凸輪的凸 部頂點時，旋轉支架會自動彈起，且扭力逐漸減小使登幕易於 開啟，而具有“開輕，，的效果，以省力地單手開啟。反之，當 反向閉合時，旋轉凸輪的凸部要越過固定凸輪的凸部，扭力會 增加，以避免螢幕絲體因自身重量而自動掉下縣本體造成 知壞—而具有射的效果。當_凸輪蝴合方向轉動越 過固定凸輪的凸部時，即自動落下形細鎖。 :二凸輪機構可平衡第一凸輪機構的扭力，在 後扭力減小時’藉由其凹凸部可提高扭力，娜 ^在開㈣程可產生停滞力，以讀螢幕或蓋體停止在任 一角度。 因 且可減少佔用空 201215297 本發明兼具開輕關重及自動閉鎖的插紐器所採取的另一 技術手段係包含： 一固定支架； 一旋轉支架； 一心軸，穿設於該固定支架及該旋轉支架；Another object of the present invention is that the Japanese 丄 σ and ρ provide a combination of a light weight and an automatic closing 'two nu'. The second cam mechanism can cause the screen or the cover body to generate a stagnant force during the opening process. #Screen or cover stops at any angle. Another object of the present invention is a hinge for a lock that includes a first mechanism that is assembled in the same axial direction. That is, the invention provides a light-closing and automatic closing cam mechanism and a second cam mechanism, and the two cams make assembly easier and faster, and can reduce the occupation for the above purpose, and the invention has both light and light weight and The technical means adopted by the automatic locking hinge comprises: a fixing bracket; a rotating bracket; a mandrel which is disposed on the Langding bracket and the weaving bracket and fixed to the fixing bracket; '~ a hollow shaft, sleeve The mandrel is disposed on the fixing bracket, and one end thereof is fixed to the rotating bracket, and is rotated with the rotating bracket; 201215297 a first cam mechanism is sleeved on the mandrel, and comprises a fixed cam and a a rotating cam that is in contact with the fixed cam, and a first elastic member, wherein the abutting faces of the fixed cam and the rotating cam are respectively provided with axially protruding convex portions, and the rotating cam is sleeved on the hollow shaft, and The hollow shaft rotates together; and a second cam mechanism is sleeved on the mandrel, and includes a fixed cam, a rotating cam connected to the fixed cam, and a second elastic element, the fixed cam and the rotating The cam contact surfaces are provided with at least a convex portion. When the rotating bracket is rotated and opened relative to the fixing bracket, the rotating cam of the first cam mechanism is rotated, and when the apex of the convex portion of the rotating cam passes over the apex of the convex portion of the fixed cam, the rotating bracket automatically bounces and the torque is gradually reduced. The curtain is easy to open, and has the effect of “opening light, and it is easy to open with one hand. Conversely, when the reverse is closed, the convex part of the rotating cam should pass over the convex part of the fixed cam, and the torque will increase to avoid the screen. The silk body automatically falls off the county body due to its own weight, causing it to be sensible - and has the effect of shooting. When the _ cam is rotated in the direction of the convex portion of the fixed cam, the shape-shaped fine lock is automatically dropped. The torque of a cam mechanism, when the back torque is reduced, 'the torsion can be increased by the concave and convex part, and the stagnation force can be generated during the opening (four) process, so that the reading screen or the cover body stops at any angle. Therefore, the occupation can be reduced 201215297 Another technical means adopted by the present invention for an optical device that combines light weight and automatic locking comprises: a fixing bracket; a rotating bracket; a mandrel, which is worn on The fixing bracket and the rotating bracket;
一第一凸輪機構，套設於該心軸，其包含一固定凸輪、一 與該固定凸輪相接的旋轉凸輪，及—第—彈性元件，該固定凸 輪與旋轉凸輪的相接面分別設有軸向凸伸的凸部；以及 第一凸輪機構，套設於該心軸，其包含一固定凸輪、一 與該固定凸輪相接的旋轉凸輪，及—第二彈性元件，該固定凸 輪與該知:轉凸輪的相接面分別設有至少一凹凸部。 根據本發明的-實施例，該心軸固定於該固定支架，且上 述的兩侧定凸輪㈣定於心軸，而上述的兩個旋轉凸輪皆固 定於旋轉支架，與旋轉支架同轉。 根據本發明的另—實細，該心細定於旋轉支架，且上 述的兩個旋轉凸_定於該心軸，心軸、旋轉凸輪和旋轉支架 同轉，而上述的兩個固定凸輪則固定於固定支架。 一 為能進-步瞭解本發明之特徵、技術手段以及所達成之具 體功能、目的，關舉較具體之實施例，繼以圖式、圖號詳細 說明如後。 【實施方式】 請參閱第丨-3冑，係本發明第—實施例之立體組合圖、元 201215297 件分解圖及剖面示意圖。本發明兼具開輕關重及自動閉鎖的樞 紐器包含有一固定支架1及一旋轉支架2，該固定支架1以一 固定部11結合於電子裝置的本體，而旋轉支架2以一固定部21 結合於電子裝置的螢幕或蓋體。該固定支架1上並結合一副支 架12 ° 一心軸3穿設於旋轉支架2的一非圓形的軸孔22、固定 支架1的一圓孔13，並以一斷面為非圓形的第一軸桿31穿設 於副支架12的一非圓形限制孔14，以固定於固定支架1。 中工轴4套设於§玄心轴3 ’並以·'非圓形的轴段41穿設 於固定支架1的圓孔13，且中空軸4的一端固定於該旋轉支架 2的軸孔22，以與該旋轉支架2同轉，並相對於固定支架i轉 動0 一第一凸輪機構5，套設於該心軸3的第一端，且該第一 端末端設有一迫緊元件6，迫緊元件6可為螺帽。該第一凸輪 機構5包含一固定凸輪5卜一旋轉凸輪52及一第一彈性元件 53，第一彈性元件53可為複數彈片53〇。該固定凸輪η以一 非圓形的限制孔如套合於心軸3的第一轴桿S1，以避免轉動， 且其與旋轉凸輪52的相接面設有二個轴向凸伸的凸部512，如 第4圖所示。旋轉凸輪52以一非圓形的限制孔521套設於中空 軸4的軸段41，以與中空轴4同轉。且旋轉凸輪力和固^ 輪5!的相接面亦設有二個轴向凸伸的凸部功。凸部犯 522各具有-頂點測、跡頂點兩侧為第—斜面跡细 與第二斜面助、勝當獅在G度時，亦即螢幕在閉合 201215297 狀態時’旋轉凸輪52的第-斜面迎擋止於固定凸輪51的第 一斜面5122形成閉鎖狀態，如第6圖所示。 -第二凸輪機構7，套設於該心軸3第二端的一非圓形的 第一軸杯32 ’ 該第—端末端^有—迫緊元件$，迫緊元件8 可為螺帽。第二凸輪機構7包含―固定凸輪7卜—旋轉凸輪乃 及-第一彈性几件73，第二彈性元件73可為複數彈片乃〇。該 固定凸輪71以一非圓形的限制孔711套合於第二軸桿32,以避a first cam mechanism is disposed on the mandrel, and includes a fixed cam, a rotating cam connected to the fixed cam, and a first elastic member, wherein the connecting surface of the fixed cam and the rotating cam are respectively provided An axially projecting convex portion; and a first cam mechanism sleeved on the mandrel, comprising a fixed cam, a rotating cam connected to the fixed cam, and a second elastic element, the fixed cam and the fixed cam It is known that the connecting surfaces of the rotating cam are respectively provided with at least one concave and convex portion. According to an embodiment of the invention, the mandrel is fixed to the fixing bracket, and the two side fixed cams (4) are fixed to the mandrel, and the two rotating cams are fixed to the rotating bracket and rotate together with the rotating bracket. According to another aspect of the present invention, the core is fixed to the rotating bracket, and the two rotating protrusions are fixed to the spindle, and the spindle, the rotating cam and the rotating bracket rotate together, and the two fixed cams are fixed. For fixing the bracket. In order to further understand the features, technical means, and specific functions and purposes of the present invention, a more specific embodiment will be described, followed by a detailed description of the drawings and the drawings. [Embodiment] Please refer to page 丨-3胄, which is a three-dimensional combination diagram of the first embodiment of the present invention, an exploded view of the element 201215297, and a schematic cross-sectional view. The pivoting device of the present invention has a fixing bracket 1 and a rotating bracket 2, the fixing bracket 1 is coupled to the body of the electronic device by a fixing portion 11, and the rotating bracket 2 is fixed by a fixing portion 21. A screen or cover that is coupled to an electronic device. The fixing bracket 1 is coupled with a pair of brackets 12°. A mandrel 3 is disposed through a non-circular shaft hole 22 of the rotating bracket 2, a circular hole 13 of the fixing bracket 1, and is non-circular in a section. A shaft 31 is disposed through a non-circular limiting hole 14 of the sub-bracket 12 for fixing to the fixing bracket 1. The middle shaft 4 is sleeved on the § Xuan mandrel 3' and is disposed in the circular hole 13 of the fixing bracket 1 by a non-circular shaft section 41, and one end of the hollow shaft 4 is fixed to the shaft hole of the rotating bracket 2 22, in the same rotation as the rotating bracket 2, and rotated relative to the fixed bracket i, a first cam mechanism 5, sleeved at the first end of the spindle 3, and the first end is provided with a pressing element 6 The pressing element 6 can be a nut. The first cam mechanism 5 includes a fixed cam 5 and a rotating cam 52 and a first elastic member. The first elastic member 53 can be a plurality of elastic pieces 53. The fixed cam η is sleeved on the first shaft S1 of the mandrel 3 so as to be non-circular, so as to avoid rotation, and the surface of the fixed cam 52 is provided with two axially convex protrusions. Section 512, as shown in Figure 4. The rotary cam 52 is sleeved on the shaft portion 41 of the hollow shaft 4 by a non-circular restricting hole 521 to rotate together with the hollow shaft 4. And the connecting surface of the rotating cam force and the fixing wheel 5! is also provided with two axially protruding convex working. The convex portion 522 has a - apex measurement, the apex on both sides of the trajectory is the first slanted surface and the second slanted surface is assisted, and the lion is at the G degree, that is, when the screen is closed in the 201215297 state, the first slant of the rotating cam 52 The first inclined surface 5122 that is stopped by the fixed cam 51 forms a locked state as shown in Fig. 6. a second cam mechanism 7, a non-circular first shaft cup 32' disposed at the second end of the mandrel 3, the first end end having a pressing member $, and the pressing member 8 can be a nut. The second cam mechanism 7 includes a "fixed cam 7" - a rotating cam and a - first elastic member 73, and the second elastic member 73 can be a plurality of elastic pieces. The fixing cam 71 is sleeved on the second shaft 32 by a non-circular limiting hole 711 to avoid
免轉動’其與旋轉凸輪72的相接面設有凹凸部爪，該凹凸部 712為-内圈凸塊與一外圈凸塊，該些凸塊兩侧各有一斜面 而旋轉凸輪72以-凸柱721固定於旋轉支架2的一嵌孔μ 以與旋轉支架2同轉。旋轉凸輪72與旋轉核2之間並設有一 雜片9，摩擦片9係套固於心轴3上。再如第5圖所示’旋 轉凸輪72和固疋凸輪71的相接面設有凹凸部從凹凸部722 包含^一個可令内圈凸塊嵌人的_凹槽，以及-個可料圈 凸塊嵌入的-外圈凹槽，該些凹槽兩侧各有—斜面。除上述的 實施方式外，固定凸輪71的凹凸部712亦可設為凹槽，而旋轉 凸輪72的凹凸部722設為凸塊。 請參閱第6圖，為樞紐器於〇度的狀態示意圖，第7 樞紐器旋轉15度的狀態示意圖。藉由上述結構’當螢幕 時’旋轉支架2帶動中空軸4旋轉，中空軸4帶動第一凸 構5的旋轉凸輪52轉動，旋轉凸輪η的第一斜面咖沿 定凸輪51的第二斜面5122移動顧，同時固定凸輪5^,The non-rotating 'the surface of the rotating cam 72 is provided with a concave-convex claw 712 which is an inner ring convex block and an outer ring convex block, and each of the convex blocks has a slope on each side thereof to rotate the cam 72 to The stud 721 is fixed to a through hole μ of the rotating bracket 2 to rotate together with the rotating bracket 2 . Between the rotating cam 72 and the rotating core 2, a blade 9 is provided, and the friction plate 9 is fastened to the mandrel 3. Further, as shown in Fig. 5, the contact surface of the rotary cam 72 and the fixed cam 71 is provided with a concave-convex portion including a recessed portion 722 which allows the inner ring projection to be embedded, and a feedable ring. The bump-embedded-outer ring groove has a bevel on each side of the groove. In addition to the above-described embodiment, the uneven portion 712 of the fixed cam 71 may be a groove, and the uneven portion 722 of the rotary cam 72 may be a bump. Please refer to Fig. 6, which is a schematic diagram of the state of the hinge in the state of the twist, and the state of the 7th pivot rotated by 15 degrees. With the above structure 'when the screen is' rotating the bracket 2 to rotate the hollow shaft 4, the hollow shaft 4 drives the rotating cam 52 of the first convex structure 5 to rotate, and the first inclined surface of the rotating cam n follows the second inclined surface 5122 of the fixed cam 51. Move the camera while fixing the cam 5^,
8 201215297 >。虽旋轉約is度時，旋轉 接觸固定凸輪51的頂點512〇 _輪U的頂點咖 第-彈性元㈣釋放使旋轉支架2』所:轉 斜面5222沿著_輪51的第-斜面5121移52的第二 如第8圖所示，為轉動開啟35度的示意圖度， 逐漸減小，而具有“開輕，，果，可輕鬆省 ^扭力8 201215297 >. When the rotation is about is, the vertex of the rotating contact fixing cam 51 is 512 〇 _ the vertex of the wheel U is released to the rotating bracket 2: the turning surface 5222 is moved along the first inclined surface 5121 of the _ wheel 51 52 The second as shown in Fig. 8 shows that the degree of rotation of the opening of 35 degrees is gradually reduced, and it has the function of "opening light, fruit, and easily reducing the torque.
第二凸_7樞職15崎0= 幕。 轉凸輪-凹凸物的斜面轉至接觸固定凸輪7;= =固r輪71壓縮第二™^ 部m2 _凸輪72的相接面接卿定凸輪71的凹凸 部712，而維持一定的扭力。因此，第二凸輪機構7可平^ ^輪機構5的扭力’以達到所需的扭力值，使 支支=慕利停从後提高扭力-生停滯力，讓螢幕轉動時: 支撐螢幕停止在任一角度。 田螢幕閉合時’第一凸輪機構5的旋轉凸輪&在^^度 ，、第斜面5222沿著固定凸輪51的第一斜面5⑵爬坡轉 動使扭力增加，㈣有“關重，，的效果，可避免螢幕因自身重量 自動掉下&擊電子裝置的本體造成損壞。當旋轉凸輪％的頂 ..占5220過了固疋凸輪51的頂點51如時旋轉凸輪&的第一 斜面5221即沿著峡⑽51的第二斜面迎自騎下形成閉 鎖狀態。 由於本發明的it件都是在單—軸向的組裝，因此組裝容 201215297 易快速，且整體樞紐器所佔用的空間較小。 叫參閱第9-1G圖’為本發明的第二實施例。本實施例刪除 第實施例的中空軸，只設置—心轴。而第一凸輪機構$與第 二凸輪機構7的旋轉凸輪52、72㈣定於旋轉支架2上以與 旋轉支架2同轉。^軸3以第—軸桿31穿棚定於固定支架1 的-非圓形軸孔15，第二軸桿32穿設於旋轉支架2的一圓孔 24且固疋凸輪51、71分別套固於心軸3的第-軸桿31盘第 二軸桿32。 一 旋轉凸輪52、72各以-圓孔套設細軸3的第—軸桿3】 與第二軸桿32 ’並各以一凸柱523、721嵌固於旋轉支架2的 队孔23 ’以與旋轉支架2同轉。固定凸輪51、71各以一非圓 形的限制孔511、711套固於心轴3的第一轴桿31與第二轴桿The second convex _7 pivots 15aki 0 = curtain. The inclined surface of the rotary cam-concave object is turned to the contact fixing cam 7; = = the solid-arc wheel 71 compresses the contact surface of the second TM^ portion m2_cam 72 to the concave-convex portion 712 of the locking cam 71 while maintaining a certain torque. Therefore, the second cam mechanism 7 can flatten the torque of the wheel mechanism 5 to achieve the required torque value, so that the support branch = Muli stops from the rear to increase the torque - the stagnation force, so that when the screen is rotated: the support screen is stopped. An angle. When the field screen is closed, the rotating cam of the first cam mechanism 5 is at a certain degree, and the first inclined surface 5222 is climbed along the first inclined surface 5 (2) of the fixed cam 51 to increase the torsion force, and (4) has the effect of "closing the weight". It can prevent the screen from automatically falling off due to its own weight and damage to the body of the electronic device. When the top of the rotating cam is 5220, the apex 51 of the fixed cam 51 passes through the first inclined surface 5221 of the rotating cam & That is, the second slope along the gorge (10) 51 welcomes the ride to form a locked state. Since the present part of the invention is assembled in a single-axis direction, the assembly capacity 201215297 is quick and the overall hinge takes up less space. Referring to Fig. 9-1G, Fig. 2 is a second embodiment of the present invention. This embodiment deletes the hollow shaft of the first embodiment, and only sets the mandrel. The first cam mechanism $ and the rotating cam of the second cam mechanism 7 52, 72 (4) is fixed on the rotating bracket 2 to rotate with the rotating bracket 2. The shaft 3 is fixed by the first shaft 31 to the non-circular shaft hole 15 of the fixed bracket 1, and the second shaft 32 is disposed through a circular hole 24 of the rotating bracket 2 and the fixing cams 51, 71 are respectively fixed to the heart The first shaft 31 of the third shaft 32 of the third shaft 32. One rotating cam 52, 72 each sleeves the first shaft 3 of the thin shaft 3 with a round hole and the second shaft 32' each has a convex column 523, 721 are embedded in the team hole 23' of the rotating bracket 2 to rotate with the rotating bracket 2. The fixing cams 51, 71 are respectively fixed to the first shaft of the spindle 3 by a non-circular limiting hole 511, 711 31 and second shaft
第-凸輪機構5的旋轉凸輪52與固定凸輪51的相接面 第一實施例相同分別設有二個軸向凸伸的凸部512、您。第 凸輪機構7的旋轉凸輪72與固定凸輪71的相接面與第一心 例相同分別設有至少—凹凸部722、712。 第一凸輪機構5亦包含套設於第-軸桿31的-第一彈性^ :’且心軸3的第—軸桿31末端設—迫緊元件6。第二凸秦 :構7亦包含套設於第二軸桿％的―第二彈性元件73，且< I3料二赠32末魏—妙播8。棘贴輪72 _ 支架2之間並設有一摩擦片9。 201215297 藉此，螢幕開關時，旋轉支架2帶動兩個旋轉凸輪52、乃 相對於兩個固定凸輪51、71轉動，而產生如同第一實施例具有 自動彈開、開輕關重及自動閉鎖的效果，且在旋轉支架2自動 彈起後，第二凸輪機構7可支撐螢幕停止在任一角度。由於第 —凸輪機構5與第二凸輪機構7皆在同一軸向組裝，因而組妒 難度較低，整體體積較小，不佔用空間。 請參閱第11-13目’為本發明的第三實施例。本實施例剛 除第-實施例的中空轴’只設置-心軸。而第—凸輪機構5與 第二凸輪機構7的固定凸輪51、71皆固定於固定支架1上。心 轴3穿設固定於旋轉支架2，與旋轉支架2同轉，且旋轉凸輪 52、72套固於心軸3，與心軸3同轉。 心軸3以非圓形的第二軸桿32穿設於支架}的_圓孔 13，以及旋轉支架2的一非圓形軸孔22，而固定於旋轉支架2。 且旋轉凸輪52、72各以—非圓形限制孔切、723套固於心轴 3的第軸才干31與第二轴桿32。固定凸輪5卜71各以一凸柱 513、713嵌固於固定支架j的我孔中。 第一凸輪機構5的旋轉凸輪52與固定凸輪51的相接面與 第-實施例相同分別設有二個軸向凸伸的凸部512、奶。第二 凸輪機構7的旋轉凸輪72與固定凸輪71的相接面與第一纽 例相同分別設有至少一凹凸部722、712。 第-凸輪機構5亦包含套設於第一軸桿31的一第一彈性元 件53且心軸3的第—轴桿31末端設—迫緊元件6。第二凸輪 201215297 機構7亦包含套設於第二軸桿32的—第二彈性元件73，且心 轴3的第二軸桿32末端設—迫緊元件8。顧定凸輪71與旋 轉支架2之間並設有一摩擦片9。 藉此’螢幕開關時，旋轉支架2帶動心軸3轉動心轴3 帶動兩個旋轉凸輪52、72相對於兩侧定凸輪5卜71轉動， 而產生如同第-實施例具有自動彈開、開輕關重及自動閉鎖的 效果且在彡疋轉支架2自動彈^後，第二凸輪機構7可支樓螢 幕停止在任-肢。且第—凸輪機構S與第二凸輪機構7皆在 同一軸向組裝’組裝難度較低，整體體積較小，不個空間。 本發明雖為實現上述目的而揭露了較佳的具體實施例，惟 其並非用以_本發明之構造瓶，任何該技術躺之通常知 識者應知’在本發明的技術精神T，任何㈣思及之變化或修 飾皆是可能的’且皆為本案之申請專利範圍所涵蓋者。 【圖式簡單說明】 第1圖，係本發明第一實施例之組合立體圖。 第2圖，係本發明第一實施例之元件分解圖。 第3圖，係本發明第一實施例之剖視圖。 第4圖’縣發明第-凸輪機翻旋轉凸輪姻定凸輪的示意 圖。 第5圖’係本發明第二凸輪機構的旋轉凸輪與固定凸輪的示意 圖。 第6圖，係本發明於〇度閉合狀態的示意圖。 201215297 第7圖，係本發明於開啟15度之狀態示意圖。 第8圖，係本發明於開啟35度之狀態示意圖。 第9圖，係本發明第二實施例之組合立體圖。 第10圖’係本發明第二實施例之元件分解圖。 第U圖’係本發明第三實施例之組合立體圖。 第12圖’係本發明第三實施例另一角度之組合立體圖。 第13圖’係本發明第三實施例之元件分解圖。 【主要元件符號說明】 1、固定支架 11、固定部 12、副支架 13、圓孔 14、限制孔 15、軸孔 16、嵌孔 2、旋轉支架 21、固定部 22、轴孔 23、嵌孔 24、圓孔 3、心轴 31、第一軸桿 32、第二轴桿 4、中空軸 41、軸段 5、第一凸輪機構 51、固定凸輪 511、限制孔 512、凸部 5120、頂點 5121、第一斜面 5122、第二斜面 513、凸柱 52、旋轉凸輪 521、限制孔 522、凸部 201215297 5220、頂點 5222、第二斜面 53、第一彈性元件 6、8、迫緊元件 71、 固定凸輪 712、凹凸部 72、 旋轉凸輪 722、凹凸部 5221、第一斜面 523、凸柱 530、彈片 7、第二凸輪機構 7Π、限制孔 Ή3、凸柱 721、凸柱 723、限制孔 730、彈片 73、第二彈性元件 9、摩擦片The contact surface between the rotating cam 52 of the first cam mechanism 5 and the fixed cam 51 is provided with two axially projecting convex portions 512, respectively, in the same manner as in the first embodiment. At least the concavo-convex portions 722 and 712 are provided in the same manner as in the first embodiment, respectively, of the surface of the rotary cam 72 of the first cam mechanism 7 and the fixed cam 71. The first cam mechanism 5 also includes a first elastic member that is sleeved on the first shaft 31 and a first axial member 31 of the spindle 3 is provided with a pressing member 6. The second convex Qin: the structure 7 also includes a second elastic element 73 that is sleeved on the second shaft %, and < I3 material is a second gift 32 end Wei - Wonder broadcast 8. A friction plate 9 is disposed between the ratchet wheel 72_ bracket 2. 201215297 In this way, when the screen is switched, the rotating bracket 2 drives the two rotating cams 52 to rotate relative to the two fixed cams 51, 71, resulting in automatic pop-opening, light-closing and automatic locking as in the first embodiment. The effect, and after the rotating bracket 2 is automatically bounced, the second cam mechanism 7 can support the screen to stop at any angle. Since the first cam mechanism 5 and the second cam mechanism 7 are assembled in the same axial direction, the group 难度 is less difficult, the overall volume is small, and no space is occupied. Please refer to pages 11-13' for the third embodiment of the present invention. The hollow shaft ' of the first embodiment except this embodiment is provided only with a mandrel. Further, the fixed cams 51, 71 of the first cam mechanism 5 and the second cam mechanism 7 are fixed to the fixed bracket 1. The mandrel 3 is fixed to the rotating bracket 2, rotates together with the rotating bracket 2, and the rotating cams 52, 72 are sleeved on the mandrel 3, and rotate with the mandrel 3. The mandrel 3 is passed through a non-circular second shaft 32 through a circular hole 13 of the bracket and a non-circular shaft hole 22 of the rotating bracket 2, and is fixed to the rotating bracket 2. Further, the rotary cams 52, 72 are each cut by a non-circular restriction hole, and 723 is fixed to the first shaft 31 and the second shaft 32 of the spindle 3. The fixed cams 5, 71 are each embedded in a hole of the fixing bracket j by a stud 513, 713. The contact faces of the rotary cam 52 of the first cam mechanism 5 and the fixed cam 51 are provided with two axially projecting convex portions 512 and milk, respectively, as in the first embodiment. The contact faces of the rotating cam 72 of the second cam mechanism 7 and the fixed cam 71 are provided with at least one uneven portion 722, 712, respectively, in the same manner as in the first new example. The first cam member 5 also includes a first elastic member 53 sleeved on the first shaft 31 and the end of the first shaft 31 of the mandrel 3 is provided with a pressing member 6. The second cam 201215297 mechanism 7 also includes a second elastic member 73 sleeved on the second shaft 32, and the second shaft 32 of the spindle 3 is provided with a pressing member 8. A friction plate 9 is disposed between the Guding cam 71 and the rotating bracket 2. By means of the 'screen switch, the rotating bracket 2 drives the mandrel 3 to rotate the mandrel 3 to drive the two rotating cams 52, 72 to rotate relative to the two fixed cams 5, 71, resulting in an automatic bounce and opening as in the first embodiment. The effect of light weighting and automatic locking is achieved, and after the twirling bracket 2 is automatically fired, the second cam mechanism 7 can stop the screen on the limb. Moreover, the first cam mechanism S and the second cam mechanism 7 are assembled in the same axial direction. The assembly difficulty is low, and the overall volume is small and there is no space. The present invention discloses a preferred embodiment for achieving the above object, but it is not used for the construction bottle of the present invention. Anyone skilled in the art should know that 'the technical spirit of the present invention T, any (four) thinking Any changes or modifications are possible and are covered by the scope of the patent application in this case. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a combination of a first embodiment of the present invention. Fig. 2 is an exploded view of the first embodiment of the present invention. Figure 3 is a cross-sectional view showing a first embodiment of the present invention. Fig. 4 is a schematic view of the county invention first-cam cam turning cam caming cam. Fig. 5 is a schematic view showing a rotary cam and a fixed cam of the second cam mechanism of the present invention. Fig. 6 is a schematic view showing the state of the present invention in a closed state. 201215297 Fig. 7 is a schematic view showing the state of the invention at 15 degrees. Fig. 8 is a schematic view showing the state in which the present invention is opened at 35 degrees. Figure 9 is a combined perspective view of a second embodiment of the present invention. Fig. 10 is an exploded view of the second embodiment of the present invention. Figure U is a combined perspective view of a third embodiment of the present invention. Fig. 12 is a perspective view showing a combination of another angle of the third embodiment of the present invention. Figure 13 is an exploded view of the third embodiment of the present invention. [Description of main component symbols] 1. Fixing bracket 11, fixing portion 12, sub-bracket 13, circular hole 14, restricting hole 15, shaft hole 16, insert hole 2, rotating bracket 21, fixing portion 22, shaft hole 23, and through hole 24, the circular hole 3, the mandrel 31, the first shaft 32, the second shaft 4, the hollow shaft 41, the shaft segment 5, the first cam mechanism 51, the fixed cam 511, the limiting hole 512, the convex portion 5120, the apex 5121 First inclined surface 5122, second inclined surface 513, protruding column 52, rotating cam 521, limiting hole 522, convex portion 201215297 5220, vertex 5222, second inclined surface 53, first elastic member 6, 8, pressing member 71, fixed Cam 712, concave and convex portion 72, rotating cam 722, uneven portion 5221, first inclined surface 523, protruding post 530, elastic piece 7, second cam mechanism 7Π, restriction hole 3, boss 721, stud 723, restriction hole 730, and elastic piece 73. Second elastic element 9, friction plate