201141422 六、發明說明： 【發明所屬之技術領域】 祕日歧鋪有關’ _是指—觀_整裝置。 【先前技術】 由於U椅無法隨著使用者的傾靠*改變椅背與椅 塾之間的角度’容易讓使用者在久坐之後產生不舒適感， ®此’ A多數座椅的糾已經讓椅背能夠依據使用者的需 求改變傾斜角度，以符合人體工學而消除久坐之不適感。 然而，當使用者坐在椅墊時，必須再往後挪動臀部， 才能讓背部倚靠到椅背，接著當椅背承受使用者的重量而 改變傾斜角度時’因受限於座椅本身之結構設計，使得使 用者在乘坐時易因挪動臀部位置而導致雙腳處於懸空的狀 態，這樣的坐姿仍然會讓使用者在久坐之後產生不舒適的 感受。另一方面，當使用者要離開座椅時，因習用座椅之 • 雜並沒有提供任何輔助推力予使用者，造成使用者需要 以較大的踩踏力量經離地面才能離開座椅。 【發明内容】 本發明之主要目的在於提供一種座椅調整襄置，其能 讓所應用之座椅提供舒適的乘坐感受。 本發明之次一目的在於提供一種座椅調整裝置，其能 讓使用者輕鬆省力地離開所應用之座椅。 為了達成上述目的，本發明之座椅調整裝置包含有一 201141422 底座、一上蓋、一彈性件，以及一背架。該上蓋以其中央 處樞設於該底座，並位於該底座之上方；該彈性件設於該 底座，並以其頂端頂抵於該上蓋，用以提供彈力作為該上 蓋的回復力量’·該背架具有二側壁’各該織具有-位於 該底座-側之第-延伸段與—由該第—延伸段傾斜地向上 延伸之第二延伸段，其中，該第—延伸段具有-第-樞接 部及-位於該第-樞接部後方之第二樞接部，並以該第一 樞接部樞接該底座，㈣該第二樞接雜接該上蓋。 在本發明之實施例中’更可提供一座架組與該上蓋柩 接，用以連接―椅塾，可提供該椅㈣復之力量。 在本發明之實施例中，更可提供一角度調整組，其且 有-可前後移動之定位板，可選擇地插設於該上蓋之其中 一定位槽内，用以調整該座架的樞擺角度。 在本發明之實施例中，更可提供一彈力調整組，其具 有-旋钮與-螺接於該旋紐之螺帽，藉由轉動該旋紐，讓 該螺帽壓賴_件，⑽驢崎齡辭該上蓋的彈 力。 綜合上述可知 — 虽該背架受到外力作用而改變傾斜角 度時’因該上蓋與該t架之間具有樞接的連結關係，使得 該背架僅能帶動該上蓋向上傾斜些微的角度，讓使用者在 乘坐應用本發明之座椅時不會讓雙腳處於懸㈣狀態，並 能獲得良好的乘坐舒適感。 【實施方式】 201141422 為了詳細說明本發明之結構、特徵及功效所在，兹列 舉一較佳實施例並配合下列圖式說明如後。 請參閱第一、二、三及八圖，為本發明一較佳實施例 所提供之座椅調整裝置(20)，包含有一底座(3〇)、一上蓋 (40)、一彈性件(50)、一背架(60)、一座架組(7〇)、一彈力 調整組(80)，以及一角度調整組(9〇)。 底座(30)之中央具有一氣壓棒安裝孔(32)，用以供座椅 G〇)之氣壓棒(16)穿設，如第三及五圖所示。底座(3〇)並樞 设有一蓋板(34)，蓋板(34)之一端突出於氣壓棒安裝孔(32) 之頂端，另一端連接一導線(36)，如第三圖所示，使得蓋 板(34)可受導線(36)的拉動而樞轉，並同時按壓氣壓棒 (16)，以便調整座椅(1〇)的高低。 上蓋(40)以其中央處與底座(3〇)樞接而位於底座(3〇)的 上方，並於其底面具有二套管(42)與一定位部(44)，如第四 圖所示，各套管(42)之兩端分別具有一缺口（422)，定位部 (44)具有兩個定位槽(442)。 彈性件(50)容設於底座(30)，並以其頂端頂抵於上蓋 (4〇) ’用以提供彈力作為上蓋(4〇)的回復力量，如第三圖 示。 —背架(60)用以供座椅⑽之椅背(12)固定，如第五圖所 不，係具有二側壁(62)，各側壁(62)具有一位於底座⑽一 側之第-延伸段(64)與一由第一延伸段(64)傾斜地向上延 伸之第二延伸段(66)，其中，第—延伸段(64)具有—第一抱 接部(642)及-位於第—樞接部(642)後方之第二拖接部 201141422 (644) ’並以第一樞接部(642)枢接底座(3〇)，而以第二樞接 部(644)樞接上蓋(4〇)。 座架組(7〇)具有二轴桿(η)、四連桿(Μ)、四扭力彈菁 (76)，以及一座架(78)。各軸桿(72)可樞轉地穿設於上蓋㈣） 之套管(42)，並於其兩端分別徑向延伸出一凸部(722)，各 凸部(722)經由套管(42)之缺口（422)突伸於外可於軸桿(^) 轉動時碰觸缺π(422)之壁面，以限制軸桿(72)之轉動角 度；各連桿(74)以其底端樞接於軸桿(72)之一端；各扭力彈 簧C76)設於軸桿(72)之一端，並以其兩端分別抵接上蓋_ 與連桿(74)，用以提供扭力作為各連桿(74)回復的力量；座 架(78)樞接於各連桿(74)之頂端，用以供座椅⑽之椅 固定。 彈力調整組(80)具有-旋紐(82)與一螺帽(84)，如第三 圖所示，旋鈕(82)可轉動地設於底座(3〇)，並具有一穿設: 彈性件⑽之螺桿卿）；螺帽㈣螺接㈣帅2)之螺桿 (822) ’並抵接於彈性件⑽之底端，使得螺帽㈣可於旋紐 (82)轉動日夺受到螺桿(822)之驅動而對彈性件⑼)施予壓 力，用以改變彈性件(50)施予上蓋(4〇)之彈力。 角度調整組(90)具有-控制桿(92)、一定位板(94)，以 及連動件(96) ’如第二及人圖所示。控制桿(92)具有一連 動段(922)與-㈣段(924) ’射，勒段(922)框設於底座 (30) ’並具有-長槽(926)，控制段(924)由連動段(922)延伸 而出，並穿出底座(30)，用以供使用者操作；定位板(94) 具有-長槽(942)，可供底座(30)之一凸部(38)穿設，使得定 201141422 位板(94)可相對底座(3〇)前後移動，並可選擇地插設於上蓋 (40)之其中一定位槽(442)，如第二、四及八圖所示；連動 件(96)在本實施例中為一扭力彈簧，係以其一端穿設於控 制桿(92)之連動段(922)的長槽(926)内，以其另一端連接於 定位板(94)，可受控制桿(92)之驅動而帶動定位板(94)產生 前後移動。 以上為本發明之座椅調整裝置(20)的詳細結構，以下 再就本發明之動作過程及特色進行說明。 請參閱第六圖，當使用者坐在椅墊(14)上時，會迫使 座架組(70)產生樞擺，並於樞擺的過程中除了帶動上蓋(4〇) 產生相對底座(30)之樞擺之外，同時將使用者的背部順勢 帶往椅背（12)的方肖’讓使用者不需要再移動就能碰觸到 椅背（12);接著當椅背（12)承受使用者的重量時，如七圖所 不’背架(60)會以第一樞接部(642)為軸心相對底座(3⑴樞轉 而改變傾斜角度，此時，由於背架(6〇)是以其第二樞接部 (644)與上蓋(4〇)相互樞接’使得上蓋⑽)在背架㈣樞轉的 過程中僅會繼向上傾斜，並不會隨著背架(6_轉相同 的角度，如此-來’當使用者蚊位之後，使用者的雙腳 並不會處於懸空驗況，讓應用本發明之鋪⑽能有效 提供舒適的乘坐感受；若使用者要離開座椅⑽而以雙腳 施力燈離地板時，座架⑽會同時藉助扭力彈簧(π)所施予 之回復力量而向上推動使用者的臀部，讓使用者可以 省力地離開座椅(10)。 二公 另一方面，當要調整上蓋(40)的角度時，如第二、 201141422 及九圖所示’先施力將控制桿(92)往前扳動，使控制桿(92) 之連動段(922)朝遠離定位板(94)的方向樞轉’連動件(96) 便會藉由本身之扭力帶動定位板(94)往前移動，使定位板 (94)脫離原本所插設於上蓋(40)之定位槽(442)，接著使用者 即可依據本身的需求’並配合彈性件(5〇)施予上蓋(4〇)的彈 力來調整上蓋(4〇)的傾斜角度；當調整完畢之後，再施力 將控制桿(92)往後扳動，如第二 、四及八圖所示’控制桿(92) 之連動段(922)便會迫使連動件(96)帶動定位板(94)往後移 動’使定位板(94)插設於所對應的定位槽(442)内，藉以完 成上蓋(40)的定位。 此外’當要改變彈性件(5〇)施予上蓋(4〇)的彈力時，如 第十圖所示，只要轉動旋鈕(82)，讓螺帽(84)受到旋鈕(82) 之螺桿(822)的驅動而向上移動，便能壓縮彈性件(5〇)而達 到改變彈性件(50)所施予上蓋(40)之回復力量的目的。 再者，當使用者想要改變座椅（10)的高度時，如第三 及五圖所示’藉由拉動導線(36)，錄(34)便會產生枢轉而 按壓氣壓棒⑽，即可讓座椅⑽能夠透過氣壓棒⑽以達 到改變高度之目的。 本發明於前揭實施例中所揭露的構成元件，僅為舉例 =明’並非用來限制本案之範圍，其他等效元件的替代或 變化，亦應為本案之申請專利範圍所涵蓋。 201141422 【圖式簡單說明】 第一圖為本發明一較佳實施例之立體圖。 第二圖為本發明一較佳實施例之立體分解圖。 第三圖為本發明一較佳實施例之剖視圖。 第四圖為本發明一較佳實施例所提供之上蓋的立體 圖，主要顯示上蓋之底部。 第五圖為應用本發明一較佳實施例之座椅的側視圖。 第六圖類同於第五圖，主要顯示座架組在椅墊受力時 產生樞擺之狀態。 第七圖類同於第六圖，主要顯示背架與上蓋在椅背受 力而改變傾斜角度時之狀態。 第八圖為本發明一較佳實施例取下上蓋及座架組之俯 視圖’主要顯示定位板插入定位槽之狀態。 第九圖類同於第八圖，主要顯示定位板離開定位槽之 狀態。 第十圖類同於第三圖，主要顯示彈性件被彈力調整組 之螺帽壓縮後之狀態。 【主要元件符號說明】 座椅(10) 椅背（12) 椅墊(14) 氣壓棒(16) 座椅調整裝置(20) 底座C30) 氣壓棒安裝孔(32) 蓋板(34) 導線(36) 凸部(3 8) 201141422 上蓋(40) 缺口 (422) 定位槽(442) 背架(60) 第一延伸段(64) 第二樞接部(644) 座架組(70) 凸部(722) 扭力彈簀(76) 彈力調整組(80) 螺桿(822) 角度調整組(90) 連動段(922) 長槽(926) 長槽(942) 套管(42) 定位部(44) 彈性件(50) 側壁(62) 第一樞接部(642) 第二延伸段(66) 軸桿(72) 連桿(74) 座架(78) 旋鈕(82) 螺帽(84) 控制桿(92) 控制段(924) 定位板(94) 連動件(96)201141422 VI. Description of the invention: [Technical field to which the invention belongs] The secret essay is related to _ _ refers to - view _ whole device. [Prior Art] Since the U chair cannot change the angle between the seat back and the seat with the user's leaning*, it is easy for the user to feel uncomfortable after sedentary. The back of the chair can be changed according to the user's needs to ergonomically eliminate the sedentary discomfort. However, when the user sits on the seat cushion, the buttocks must be moved backwards to allow the back to lean against the back of the chair, and then when the back of the chair is subjected to the user's weight and the angle of inclination is changed, 'because of the structure of the seat itself The design makes it easy for the user to move the buttocks when riding, and the feet are suspended. This sitting posture still makes the user feel uncomfortable after sitting for a long time. On the other hand, when the user wants to leave the seat, the auxiliary seat does not provide any auxiliary thrust to the user, so that the user needs to step away from the ground with a large pedaling force to leave the seat. SUMMARY OF THE INVENTION A primary object of the present invention is to provide a seat adjustment device that provides a comfortable ride experience for the seat being applied. A second object of the present invention is to provide a seat adjustment device that allows a user to easily and effortlessly leave the applied seat. In order to achieve the above object, the seat adjusting device of the present invention comprises a 201141422 base, an upper cover, an elastic member, and a back frame. The upper cover is pivotally disposed at the center of the upper cover and located above the base; the elastic member is disposed on the base, and the top end thereof abuts against the upper cover for providing elastic force as the restoring force of the upper cover. The back frame has two side walls 'each of which has a first extension portion on the base side and a second extension portion extending obliquely upward from the first extension portion, wherein the first extension portion has a -th pivot The connecting portion and the second pivoting portion located behind the first pivoting portion are pivotally connected to the base by the first pivoting portion, and (4) the second pivotal connection is mixed with the upper cover. In the embodiment of the present invention, a frame set is further provided to be coupled to the upper cover for connecting the chair to provide the power of the chair (4). In an embodiment of the present invention, an angle adjustment group is further provided, and a positioning plate that can be moved back and forth is selectively inserted into one of the positioning slots of the upper cover for adjusting the pivot of the frame Swing angle. In an embodiment of the present invention, an elastic adjustment group is further provided, which has a -knob and a nut that is screwed to the knob, and by rotating the knob, the nut is pressed against the member, (10) Sasaki resigned the elasticity of the cover. In summary, although the back frame is subjected to an external force to change the tilt angle, the pivotal connection between the upper cover and the t-frame allows the back frame to only tilt the upper cover upward by a slight angle for use. When riding the seat to which the present invention is applied, the seat is not placed in a suspended (four) state, and good ride comfort can be obtained. [Embodiment] 201141422 For a detailed description of the structure, features and effects of the present invention, a preferred embodiment will be described with reference to the following drawings. Please refer to the first, second, third and eighth figures. The seat adjusting device (20) according to a preferred embodiment of the present invention comprises a base (3〇), an upper cover (40) and an elastic member (50). ), a back frame (60), a frame set (7〇), an elastic adjustment group (80), and an angle adjustment group (9〇). The base (30) has a gas rod mounting hole (32) at the center for the pneumatic rod (16) of the seat G〇), as shown in the third and fifth figures. The base (3〇) is pivotally provided with a cover plate (34), one end of the cover plate (34) protrudes from the top end of the gas rod mounting hole (32), and the other end is connected with a wire (36), as shown in the third figure. The cover plate (34) is pivoted by the pulling of the wire (36) and simultaneously presses the gas pressure bar (16) to adjust the height of the seat (1 inch). The upper cover (40) is pivotally connected to the base (3〇) at the center thereof and is located above the base (3〇), and has two sleeves (42) and a positioning portion (44) on the bottom surface thereof, as shown in the fourth figure. It is shown that each of the sleeves (42) has a notch (422) at each end thereof, and the positioning portion (44) has two positioning grooves (442). The elastic member (50) is received on the base (30) and has its top end abutting against the upper cover (4〇) ′ to provide elastic force as the restoring force of the upper cover (4〇), as shown in the third figure. - the back frame (60) is for fixing the seat back (12) of the seat (10), as shown in the fifth figure, having two side walls (62), each side wall (62) having a first side on the side of the base (10) - An extension (64) and a second extension (66) extending obliquely upward from the first extension (64), wherein the first extension (64) has a first abutment (642) and a - a second mooring portion 201141422 (644) ' behind the pivoting portion (642) and pivoting the base (3〇) with the first pivoting portion (642) and pivoting the upper cover with the second pivoting portion (644) (4〇). The mount set (7〇) has a two-axis (η), four-link (Μ), four-torque elastic (76), and a stand (78). Each of the shafts (72) is pivotally disposed through the sleeve (42) of the upper cover (four)), and a convex portion (722) is radially extended at each end thereof, and each convex portion (722) passes through the sleeve ( 42) The notch (422) protrudes outwardly to touch the wall surface of the π (422) when the shaft (^) rotates to limit the rotation angle of the shaft (72); each of the links (74) has a bottom The end is pivotally connected to one end of the shaft (72); each of the torsion springs C76) is disposed at one end of the shaft (72), and abuts the upper cover _ and the connecting rod (74) at opposite ends thereof for providing torque as each The force of the link (74) is restored; the frame (78) is pivotally connected to the top end of each link (74) for fixing the seat of the seat (10). The elastic adjustment group (80) has a knob (82) and a nut (84). As shown in the third figure, the knob (82) is rotatably disposed on the base (3〇) and has a threading: elasticity Screw (4) screw; (4) screw (4) handsome 2) screw (822) 'and abuts the bottom end of the elastic member (10), so that the nut (four) can be rotated by the screw (82) 822) is driven to apply pressure to the elastic member (9) to change the elastic force of the elastic member (50) applied to the upper cover (4). The angle adjustment group (90) has a - control lever (92), a positioning plate (94), and a linkage (96)' as shown in the second and human figures. The control rod (92) has a linkage section (922) and a - (four) section (924) 'shot, the section (922) is framed on the base (30)' and has a long slot (926), and the control section (924) is The interlocking section (922) extends out and passes through the base (30) for the user to operate; the positioning plate (94) has a long slot (942) for the convex portion (38) of the base (30) The setting is such that the 201141422 position plate (94) can move back and forth relative to the base (3〇) and can be selectively inserted into one of the positioning grooves (442) of the upper cover (40), as shown in the second, fourth and eighth figures. The linkage member (96) is a torsion spring in this embodiment, and one end thereof is disposed in the long groove (926) of the linkage section (922) of the control rod (92), and the other end is connected to the positioning. The plate (94) can be driven by the control rod (92) to drive the positioning plate (94) to move back and forth. The above is the detailed structure of the seat adjusting device (20) of the present invention, and the operation process and features of the present invention will be described below. Referring to the sixth figure, when the user sits on the seat cushion (14), the frame group (70) is forced to pivot, and in the process of pivoting, in addition to driving the upper cover (4〇), the opposite base is generated (30). In addition to the pivoting position, the user's back is brought to the back of the chair (12), so that the user can touch the back of the chair without moving (12); then the back of the chair (12) When the user's weight is received, as shown in Figure 7, the back frame (60) will pivot with respect to the base (3 (1) with the first pivoting portion (642) as the axis to change the tilt angle. At this time, due to the back frame (6) 〇) is that the second pivoting portion (644) and the upper cover (4〇) are pivotally connected to each other such that the upper cover (10) is only tilted upward during the pivoting of the back frame (4), and does not follow the back frame ( 6_ turn the same angle, so - to 'when the user's mosquito position, the user's feet will not be in a dangling test, so that the application of the invention (10) can effectively provide a comfortable ride; if the user wants When leaving the seat (10) and applying the light to the floor with the feet, the frame (10) will simultaneously push the user's buttocks by the restoring force exerted by the torsion spring (π). The user can effortlessly leave the seat (10). On the other hand, when the angle of the upper cover (40) is to be adjusted, as shown in the second, 201141422 and the nine figures, the control lever (92) is applied first. The front swinging causes the linkage section (922) of the control lever (92) to pivot away from the positioning plate (94). The linkage (96) will move the positioning plate (94) forward by its own torque. The positioning plate (94) is disengaged from the positioning groove (442) originally inserted in the upper cover (40), and then the user can apply the elastic force of the upper cover (4〇) according to the requirement of the user and the elastic member (5〇). To adjust the tilt angle of the upper cover (4〇); after the adjustment is completed, apply the force to move the control lever (92) backwards, as shown in the second, fourth and eighth diagrams of the interlocking section of the control lever (92) ( 922) forces the linking member (96) to move the positioning plate (94) backwards to move the positioning plate (94) into the corresponding positioning groove (442), thereby completing the positioning of the upper cover (40). When changing the elastic force of the elastic member (5〇) to the upper cover (4〇), as shown in the tenth figure, just turn the knob (82) and let the nut (84) receive the screw (822) of the knob (82). Drive When moving up, the elastic member (5〇) can be compressed to achieve the purpose of changing the restoring force applied by the elastic member (50) to the upper cover (40). Further, when the user wants to change the height of the seat (10) As shown in Figures 3 and 5, by pulling the wire (36), the recording (34) will pivot and press the bar (10), so that the seat (10) can pass through the bar (10) to achieve the purpose of changing the height. The constituting elements disclosed in the foregoing embodiments are merely illustrative and not intended to limit the scope of the present invention. The alternative or variations of other equivalent elements are also covered by the scope of the patent application. 201141422 [Simplified description of the drawings] The first figure is a perspective view of a preferred embodiment of the present invention. The second figure is an exploded perspective view of a preferred embodiment of the present invention. The third figure is a cross-sectional view of a preferred embodiment of the present invention. The fourth figure is a perspective view of an upper cover provided by a preferred embodiment of the present invention, mainly showing the bottom of the upper cover. Figure 5 is a side elevational view of a seat to which a preferred embodiment of the present invention is applied. The sixth figure is similar to the fifth figure, which mainly shows the state in which the frame group is pivoted when the seat cushion is stressed. The seventh figure is similar to the sixth figure, mainly showing the state of the back frame and the upper cover when the seat back is stressed and the inclination angle is changed. The eighth figure is a top view of the upper cover and the frame set removed according to a preferred embodiment of the present invention. The state in which the positioning plate is inserted into the positioning groove is mainly shown. The ninth figure is similar to the eighth figure, and mainly shows the state in which the positioning plate leaves the positioning groove. The tenth figure is similar to the third figure, and mainly shows the state in which the elastic member is compressed by the nut of the elastic adjustment group. [Main component symbol description] Seat (10) Seat back (12) Seat cushion (14) Air pressure bar (16) Seat adjustment device (20) Base C30) Air bar mounting hole (32) Cover plate (34) Wire ( 36) Convex (3 8) 201141422 Upper cover (40) Notch (422) Positioning groove (442) Back frame (60) First extension (64) Second pivot (644) Seat set (70) Convex (722) Torque magazine (76) Elastic adjustment group (80) Screw (822) Angle adjustment group (90) Interlocking section (922) Long groove (926) Long groove (942) Sleeve (42) Positioning part (44) Elastic (50) Sidewall (62) First pivot (642) Second extension (66) Shaft (72) Link (74) Seat (78) Knob (82) Nut (84) Joystick (92) Control section (924) Positioning plate (94) Linkage (96)