201216901 六、發明說明： 【發明所屬之技術領域】 本發明係屬於-種座椅組件，尤指—種可防止椅背過 :轉動的座椅裝置，其椅背以及椅座之間具有限制角度的 機制，藉此避免椅背過度轉動而夾到使用者手部。 【先前技術】 座椅係人們日常生活中不可獲缺的傢俱之一，提供人 φ 們室内辦公與休閒的舒適性。 現有的座椅係在-椅腳上設置有-椅座，並在椅座上 設置有-椅背以及二扶手。然而，此種座椅沒有椅背角度 調t功自b’ ϋ此無法針對不同使用者調整適當的椅背角度。 因此有人發展出一種讓椅背可以相對椅座改變角度的 座椅’該椅背與椅座之間設置有復位彈菁，藉此，使用者 't倚靠椅者時’椅背可因為使用者向後靠施加於椅背的 ^量而改變角度’且藉由復位彈簧可讓椅背提供使用者一 回饋力道’令使用者能夠適度調整上半身後仰的力量以與 回饋力道之間達到-平衡，並藉此將椅背定位在一適當的 傾斜角度。 然而，上述復位彈簧相對椅背各個角度下所提供的彈 力是固定而非可變，因此對於不同使用者而言，都須以上 半身對椅背施加相同力量才能將椅背定位在相同角度。如 身材问大的使用者會覺得椅背回饋力道過輕而椅背過 軟’身材嬌小的使用者則會覺得椅背回饋力道過重而椅背 過硬。換δ之，此種座椅無法適用各種不同身材的使用者。 .201216901 再者，上述的座椅設計均無防止椅背相對椅座過度轉 動的機制，因此使用者手部或是其他物品容易被夹在椅座 與椅背之間。 【發明内容】 本發明人有鑑於目冑的座椅縱使有椅背調整機制，卻 無法適用於身材不同的使用者的缺點，改良其不足與缺 失’進而發明出-種可防止椅背過度轉動的座椅裝置。 本發明主要目的係提供-種可防止椅背過度轉動的座 椅裝置，其椅背以及椅座之間具有限制角度的機制，藉此 避免椅背過度轉動而夾到使用者手部。 爲達上述㈣，係令前述可防止椅背過度轉動的 裝置包含有： —一固定骨架，在固定骨架上延伸有二固定支架，各固 定支架為中空而在固定支架後端上形成有一限位槽； 一柩轉骨架，係樞接於固定骨架後端，且具有二樞轉 支架以分別與兩固定支架的後端相柩接，各樞轉支架前端 形成有一伸入相對應限位槽的限位擺臂，該限位擺臂能在 限位槽中上下擺動並且底靠限位槽的上、下内壁以限^框 轉月架與椅背框架的樞轉角度； 一椅背框架，係設置在樞轉骨架的樞轉支架上； 一椅座框架，係設置在固定骨架與樞轉骨架上丨以及 一椅背角度與彈力調整組件，係設置在固定骨 轉骨架之間。 〃樞 藉由上述技術手段，透過固定支架的限位槽與樞轉支 架的限位擺臂的限制關係，可令座椅裝置具有防夾機制， 4 201216901 避免椅背框架過度向後拖轉而讓使 被央在固定支架與樞轉支架之間。手…其他部位 前述椅背角度與彈力調整組❹有—㈣塊、 片、-調整螺捍、一調整塊以及至 固疋 塊固定在兩Μ轉支β 扭力彈簧，該固定 方，該調整4:有v 片固定在兩固定支架上 端，且連接線 以及一相對連接端的調整 端且連接端以可旋轉方式連接在固定塊上201216901 VI. Description of the Invention: [Technical Field] The present invention relates to a type of seat assembly, and more particularly to a seat device that prevents the back of the chair from rotating: a seat device having a restricted angle between the seat back and the seat Mechanism to prevent the back of the chair from being over-rotated and pinched to the user's hand. [Prior Art] The seat is one of the indispensable pieces of furniture in people's daily life, providing the comfort of indoor office and leisure. The existing seat is provided with a seat on the leg and a seat back and two armrests on the seat. However, this type of seat does not have a seat back angle adjustment from b'. This makes it impossible to adjust the appropriate seat back angle for different users. Therefore, some people have developed a seat that allows the seat back to change the angle with respect to the seat. The reset back is provided between the seat back and the seat, whereby the user can't lean back on the chair because the user can Reversing the angle applied to the back of the chair and changing the angle ', and by the return spring, the seat back can provide the user with a feedback force', so that the user can moderately adjust the strength of the upper body to lean back and balance with the feedback force. And thereby positioning the seat back at an appropriate angle of inclination. However, the springs provided by the return springs at various angles relative to the seat back are fixed rather than variable, so for different users, the same force must be applied to the back of the upper body to position the seat back at the same angle. For example, a user with a large body feels that the back of the chair is too light and the back of the chair is too soft. A user with a small body feels that the back of the chair is too heavy and the back of the chair is too hard. For δ, this type of seat cannot be used by users of different sizes. .201216901 Furthermore, none of the above seat designs have a mechanism to prevent the seat back from being excessively rotated relative to the seat, so that the user's hand or other items are easily caught between the seat and the seat back. SUMMARY OF THE INVENTION The present inventors have in view of the fact that the seat of the present invention has a seat back adjustment mechanism, but cannot be applied to the disadvantages of users with different body shapes, and improves its deficiencies and omissions, and invents it to prevent over-rotation of the seat back. Seat device. SUMMARY OF THE INVENTION A primary object of the present invention is to provide a seat apparatus that prevents excessive rotation of the seat back, with a mechanism for limiting the angle between the seat back and the seat, thereby preventing the seat back from being excessively rotated and being caught by the user's hand. In order to achieve the above (4), the foregoing apparatus for preventing excessive rotation of the seat back includes: a fixed frame, and two fixing brackets extending on the fixed frame, each fixing bracket is hollow and a limit is formed on the rear end of the fixing bracket. a slewing frame is pivotally connected to the rear end of the fixed frame, and has two pivoting brackets respectively connected to the rear ends of the two fixing brackets, and a front end of each pivoting bracket is formed with a corresponding protruding slot. a limit swing arm capable of swinging up and down in the limit groove and bottoming against the upper and lower inner walls of the limit groove to limit the pivoting angle of the frame and the back frame; a seat back frame, The device is disposed on the pivoting bracket of the pivoting frame; a seat frame is disposed on the fixed frame and the pivoting frame, and a back angle and elastic adjusting component is disposed between the fixed bone rotating frame. By the above technical means, the restraining relationship between the limiting slot of the fixed bracket and the limit swing arm of the pivot bracket can make the seat device have an anti-pinch mechanism, 4 201216901 avoiding excessive back-sliding of the back frame The center is placed between the fixed bracket and the pivot bracket. Hand... Other parts of the aforementioned seat back angle and elastic adjustment group are - (four) block, piece, - adjustment screw, an adjustment block and to the solid block are fixed in the two turns of the torsion spring, the fixed side, the adjustment 4 : a v piece is fixed on the upper ends of the two fixing brackets, and the connecting line and an adjusting end of the opposite connecting end are rotatably connected to the fixing block
螺鎖穿套在調整螺尸h A.. °調整塊係 ”杯旎透過轉動調整螺桿而令調整塊 或是遠離固定塊，該扭力彈簧係設置在樞轉骨架 ，提供樞轉骨架與椅背框架復位力量， 端 :::抵f端，該固接端固定在固定片上，該抵靠::： ^ 調整塊的移動可改變扭力彈簧的彈力。 前述樞轉骨架的樞轉支牟^ 彈脊穿套在軸桿上^ “間固-有-轴桿’該扭力 。前述椅座框架係以樞接方式設置在固定骨架與拖轉骨 架上。 前述調整螺桿的調整端上固定有一旋鈕 前述固定骨架下緣設置有一椅腳。 【實施方式】 請參照圖1到圖3’本發明可防止椅背過度轉動的座椅 裝置包含有：—固定骨架10、一樞轉骨架2〇、一椅背框架 3〇、一椅座框架50、一椅背角度與彈力調整組件4〇以及 一椅腳60。 該固定骨架10上延伸有二固定支架H，兩固定支架 11呈縱長狀。 201216901 該栖轉骨架20係樞接於固定骨架ι〇後端，且具有二 框轉支架21以分別與兩固定支架彳彳的後端相樞接。兩樞 轉支架21呈縱長狀。 該椅背框架30係設置在樞轉骨架20的樞轉支架21 上，該椅背框架30可為一略呈矩形的圈狀。 該椅座框架50係係設置在固定骨架10與柩轉骨架20 上，該椅背框架50可為一略呈矩形的圈狀。 該椅背角度與彈力調整組件40，係設置在固定骨架1 〇 與心轉骨架2〇之間，且具有一固定塊41、一固定片42、 一調整螺桿43、一調整塊44以及至少一扭力彈簧46。 該固定塊41固定在兩樞轉支架11下方。 該固定片42固定在兩固定支架21上方。 該調整螺桿43具有一連接端以及一相對連接端的調整 端’且連接端以可旋轉方式連接在固定塊41上。 該調整塊44係螺鎖穿套在調整螺桿43上，能透過轉 動調整螺桿43而令調整塊44移動靠向或是遠離固定塊 該扭力彈簧46係設置在枢轉骨架20上，提供框轉骨 架20與椅背框架3〇復位力量’且具有一固接端461以及 一抵靠端462,該固接端461固定在固定片42上，該抵靠 端462抵靠固定在調整塊44上，藉此與調整塊44相互固 定，調整塊44的移動可改變扭力彈簧46的彈力。於本發 明較佳實施例之中’扭力彈簧46數量為二，且兩扭力彈菁 的抵靠端462是呈U形的一體連接狀，亦可視不同的應用 再增加扭力彈簧46的數量。 該椅腳60設置在固定骨架10下緣，可具有氣壓棒以 201216901 及滾輪等元件。 於本發明較佳實施例之中，樞轉骨架20的樞轉支架21 之間固定有一軸桿45，該扭力彈簧46穿套在轴桿45上。 請進一步參照圖4、圖8以及圖9,於本發明較佳實施 例之中’固定骨架10的各固定支架η為中空而在後端上 形成有一限位槽111，該柩轉骨架20的各柩轉支架21前 端形成有一伸入相對應限位槽1彳1的限位擺臂22，該限位 擺臂22能在限位槽111中上下擺動並且底靠限位槽ΐη的 上、下内壁以限制樞轉骨架20與椅背框架3〇的樞轉角度。 請參照圖5到圖7，旋轉調整螺桿43令調整塊44移 動靠向固定塊41’調整塊44對於扭力彈簧46的抵靠端462 的壓力減少’此時扭力彈菁46變的較鬆他’因此椅背框架 30給予使用者背部的回饋力道減少，使用者可感受到椅背 框架30較軟而舒適。若是反向移動調整塊44，則會對扭力 彈簧46加壓，使得㈣框架3Q的回馈力道增強，對使用 鲁者提供較大的支擇力，使用者則能夠感受框架 扎實支撐性能。 於本發明較佳實施例之中，椅座框架5〇係以拖接 設置在固定骨架1〇與樞轉骨架2〇上。 於本發明較佳實施例之中，調整螺桿43的調整端上 定有一旋紐。 藉由上述技術手段，透過固定支架”的限位槽” 插轉支架21的限位擺臂22的限制關係，可令座椅裝置且 f防錢制，避免椅背框架Μ過度向後㈣而讓❹者; 部或疋其他部位被夾在固定支架Μ與樞轉支架2 7 201216901 此外，位於扭力彈簧46The screw lock is placed on the adjusting screw body. The A.. ° adjusting block system "cup" adjusts the block or moves away from the fixed block by rotating the adjusting screw. The torsion spring is disposed on the pivoting frame to provide the pivoting frame and the seat back. The frame resets the force, the end::: the end of the f, the fixed end is fixed on the fixed piece, the abutment::: ^ The movement of the adjusting block can change the elastic force of the torsion spring. The pivoting support of the aforementioned pivoting frame The ridge is worn over the shaft ^ "interlocking - with - shaft" the torque. The seat frame is pivotally disposed on the fixed frame and the towing frame. A knob is fixed on the adjusting end of the adjusting screw. The lower edge of the fixed frame is provided with a leg. [Embodiment] Please refer to FIG. 1 to FIG. 3'. The seat device capable of preventing the seat back from rotating excessively includes: a fixed skeleton 10, a pivoting frame 2〇, a back frame 3〇, and a seat frame. 50. A seat back angle and elastic adjustment assembly 4〇 and a chair foot 60. Two fixed brackets H extend on the fixed frame 10, and the two fixing brackets 11 are longitudinally elongated. 201216901 The perch rotation skeleton 20 is pivotally connected to the rear end of the fixed skeleton ι, and has a two-frame rotation bracket 21 to be pivotally connected to the rear ends of the two fixing brackets, respectively. The two pivoting brackets 21 are elongated. The seat back frame 30 is disposed on a pivot bracket 21 of the pivoting frame 20, which may be a slightly rectangular ring shape. The seat frame 50 is disposed on the fixed frame 10 and the twist frame 20, and the seat back frame 50 can be a slightly rectangular ring shape. The back angle and the elastic adjusting component 40 are disposed between the fixed frame 1 〇 and the heart-turning frame 2 , and have a fixing block 41 , a fixing piece 42 , an adjusting screw 43 , an adjusting block 44 , and at least one Torsion spring 46. The fixing block 41 is fixed below the two pivot brackets 11. The fixing piece 42 is fixed above the two fixing brackets 21. The adjusting screw 43 has a connecting end and an adjusting end end of the opposite connecting end, and the connecting end is rotatably coupled to the fixing block 41. The adjusting block 44 is screwed onto the adjusting screw 43 and can be moved to or away from the fixing block by rotating the adjusting screw 43. The torsion spring 46 is disposed on the pivoting frame 20 to provide a frame rotation. The frame 20 and the back frame 3 are configured to have a fixed end ′ and have a fixed end 461 and an abutting end 462 . The fixed end 461 is fixed on the fixing piece 42 , and the abutting end 462 is fixed on the adjusting block 44 . Thereby, the adjusting block 44 is fixed to each other, and the movement of the adjusting block 44 can change the elastic force of the torsion spring 46. In the preferred embodiment of the invention, the number of torsion springs 46 is two, and the abutting ends 462 of the two torsion springs are U-shaped integral connections, and the number of torsion springs 46 can be increased depending on the application. The leg 60 is disposed at the lower edge of the fixed frame 10, and may have a gas pressure bar with elements such as 201216901 and a roller. In the preferred embodiment of the present invention, a pivot rod 45 is fixed between the pivot brackets 21 of the pivoting frame 20, and the torsion spring 46 is sleeved on the shaft 45. 4, FIG. 8 and FIG. 9, in the preferred embodiment of the present invention, the fixing brackets η of the fixed frame 10 are hollow, and a limiting slot 111 is formed on the rear end. A limit swing arm 22 extending into the corresponding limit slot 1彳1 is formed at a front end of each of the swing brackets 21, and the limit swing arm 22 can swing up and down in the limit slot 111 and rest on the limit slot ΐn. The lower inner wall limits the pivoting angle of the pivoting frame 20 to the seatback frame 3〇. Referring to FIG. 5 to FIG. 7, the rotation adjusting screw 43 causes the adjusting block 44 to move toward the fixing block 41' to adjust the block 44 to reduce the pressure of the abutting end 462 of the torsion spring 46. At this time, the torsion force 46 becomes looser. Thus, the backrest frame 30 provides a reduction in the feedback force to the back of the user, and the user can feel that the back frame 30 is soft and comfortable. If the adjustment block 44 is reversely moved, the torsion spring 46 is pressurized, so that the feedback force of the (4) frame 3Q is enhanced, and the user is provided with greater control power, and the user can feel the solid support performance of the frame. In the preferred embodiment of the present invention, the seat frame 5 is slidably disposed on the fixed frame 1〇 and the pivot frame 2〇. In a preferred embodiment of the invention, a knob is provided on the adjustment end of the adjustment screw 43. By the above technical means, the limiting relationship of the limiting swing arm 22 of the insertion bracket 21 through the limiting bracket of the fixing bracket can make the seat device and the anti-money system prevent the back frame from being excessively backward (4). The other part is clipped to the fixed bracket 枢 and the pivot bracket 2 7 201216901 In addition, it is located in the torsion spring 46
而改變椅背框架30給予使用者背部的 予不同使用者適當的椅背框架3〇 可提供抱轉骨架20與椅背框 30時可得到適當的 整扭力彈簧46的鬆緊，進 背部的回饋力道，進而能給 3〇支撐性。 【圖式簡單說明】 圖1係本發明側面視圖。 圖2係本發明仰視圖。 圖3係本發明立體外觀圖。 圖4係本發明椅背框架後仰的操作示意圖。 圖5係本發明調整塊前移的操作示意圖。 圖6係本發明接續圖5的仰視圖。 圖7係本發明接續圖5且椅背框架後仰的操 圖8係本發明椅背框架放大示意圖。 ‘、 圖9係本發明接續圓8的放大示意圖。【主要元件符號說明】 10固定骨架 11固定支架 111限位槽 20樞轉骨架 21樞轉支架 22限位擺臂 30椅背框架 40椅背角度與彈力調整組件 41固定塊 43調整螺桿 42固定片 44調整塊 201216901 45軸桿 461固接端 50椅座框架 46扭力彈簧 462抵靠端 60椅腳And changing the seat back frame 30 to give the user a suitable back frame 3 for different users on the back. When the frame 20 and the back frame 30 are provided, the appropriate torsion spring 46 can be obtained, and the back force can be obtained. In turn, it can give 3〇 support. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side elevational view of the present invention. Figure 2 is a bottom plan view of the present invention. Figure 3 is a perspective view of the present invention. Figure 4 is a schematic view showing the operation of the back frame of the present invention. Fig. 5 is a schematic view showing the operation of the adjustment block of the present invention. Figure 6 is a bottom plan view of the present invention continued from Figure 5. Figure 7 is a schematic view of the back frame of the present invention taken along line 5 of the present invention. ‘, FIG. 9 is an enlarged schematic view of the splicing circle 8 of the present invention. [Main component symbol description] 10 fixed skeleton 11 fixed bracket 111 limit slot 20 pivot skeleton 21 pivot bracket 22 limit swing arm 30 seat back frame 40 seat back angle and elastic adjustment component 41 fixed block 43 adjustment screw 42 fixed piece 44 adjustment block 201216901 45 shaft 461 fixed end 50 seat frame 46 torsion spring 462 abuts end 60 legs