M274293 :八、新型說明： 【新型所屬之技術領域】 本創作係有關於一種手推車收展構造，特別是指於該 輪座之底緣環設有嵌槽，而主支桿之支撐桿上藉由第一樞 接兀件穿設而固定有固定座，又於固定座之外緣樞設有從 動齒輪，該從動齒輪上設有卡塊，以供卡抵於輪座之嵌槽 内，帶動其旋轉，又該置物架之第一樞接座上設有主動齒 輪，該主動齒輪係嚙合從動齒輪，以帶動其轉動，藉以可 籲達到收展之作用。 【先前技術】 按，目前一般所使用之手推車係採用固定式，因此相 當佔用空間，而且不易收藏攜帶，所以改良成為可收合式 之手推車’其構造如第七圖所示，係設有一主支桿（A)，該 主支桿（A)上設入有一可供伸縮收合之把手桿（B)，又主支 杯（A)之二側底部凸設有支撐桿（Ai )，而該支撐桿（μ )上係 春分別套設有一可旋動之輪座（A2)，該輪座（A2)上設有輪子 (A3)，又該輪座（A2)之底部外緣1/4圈位置處，係設有齒槽 (A4)〔如第八圖所示〕，又於支撐桿（A1)之底部樞設有一 置物架（C)，該置物架（〇係連設有一伸縮連桿（C1)，該伸 縮連桿（C1)之另端則接設於把手桿（B)上，又該置物架（c) 二側分別設有一 U型之樞接部（C2)，該樞接部（C2)之一内 側則固定有一齒輪（C3)，以供嚙合於輪座（A2)之齒槽（A4) M274293 内，藉由收合置物架（C)時，該置物架（C)樞接部（C2)内之 齒輪（C3)可以向上轉動90°，而其所嚙合之輪座（A2)齒槽 (A4)則可相對轉動1/4圈，該輪座（A2)則隨之旋轉1/4圈， 使輪子（A3)可以收合貼齊於支撐桿（A1)側緣，如此，則可 供同步收合置物架（C)及輪子（A3)〔請參考第六圖所示〕， 而達到易於收合之功效。 然，此等手推車之收展構造，卻由於該置物架（C)之樞 接部（C2)，必須可以容置主支桿（A)之支撐桿（A1)，因此其 間距之尺寸並無法縮小，造成置物架（C)之面積過大，而佔 用較大之空間，又該輪座（A2)上之齒槽（A4)係設於外緣位 置處，因此與齒輪（C3)之嚙合容易跳齒滑脫，甚至於造成 崩牙損壞，而無法轉動，所以在使用上並不甚理想。 【新型内容】 有鑑於習知手推車之收展構造，具有上述之缺失，故 本創作係在提供一種手推車收展構造，其係在於主支桿底 部凸設有支撐桿，又主支桿上設有伸縮座，輪座則套合於 主支桿之支撐桿上，該輪座係設有輪子，又輪座上設有槽 孔，而固定座固定於主支桿之支撐桿上，其係設有槽孔， 置物架則供樞接於固定座上，該置物架二側分別設有第一 樞接座，又把手架係套設於主支桿之伸縮座内，該把手架 上係樞接有伸縮連桿，該伸縮連桿另端則樞接於置物架 上，其主要特徵係在於：該輪座之底緣係環設有嵌槽，而 M274293 主支桿之支樓桿上係設有第一透孔，又固定座上相對設有 第一透孔，該支撐桿及固定座之第一透孔内係供第一樞接 元件穿設，該第一枢接元件於固定座之外緣則樞設有從動 齒輪’該從動#輪上設有卡塊，以供卡抵於輪座之叙槽内， 帶動其旋轉，又該置物架之第一樞接座上設有主動齒輪， 該主動齒輪係喃合從動窗輪，以帶動其轉動。 本創作實施例確實具有下列之優點： 1 ·本創作之主動齒輪係一體成型於第一樞接座之外側 Φ ，因此其與從動齒輪喃合時，第一樞接座不需較大之間距 尺寸’故可有助於縮小置物架之面積，以節省製造成本， 及不佔用空間。 2·本創作於輪座之底緣係環設有嵌槽，而從動齒輪側 邊連設有扇形塊，該扇形塊之周緣設有卡塊，以供卡抵於 嵌槽内，而可確實傳動，不會產生跳齒無法傳動之狀況。 【實施方式】 # 首先，請參閱第一、二圖所示，本創作主要係包括有 主支桿（1)、輪座（2)、固定座（3)、置物架（4)及把手架（5)， 其中： 主支桿（1)，其二側底部凸設有支撐桿（11)，該二支撐 桿（11)上係分別設有第一透孔（12)及第二透孔（13)，又於 主支桿（1)之二侧頂端設有伸縮座。 輪座（2),係套合於主支桿（1)之支撐桿（11)上，該輪 座（2)係設有一輪子（21)，該輪座（2)上係設有一槽孔 M274293 -(22) ’而輪座（2)之底緣環設有若干之嵌槽（23)，又於輪座 (2)之底緣設有一滑槽（24)。 固定座（3)，係固定於主支桿（丨）之支撐桿（11)上，其 係設有一槽孔（31)，該固定座（3)上係分別設有第一透孔 (32)及第二透孔（33)，該第一透孔（32)及第二透孔（33)内 分別供第一樞接元件（34)及第二樞接元件（35)穿設，其中 该第一樞接元件（34)於固定座（3)之外緣則樞設有從動齒 輪（36)，該從動齒輪（36)上則設有一轴孔（361)，又從動齒 φ輪（36)側邊係連設有一扇形塊（362)，該扇形塊（362)之周 緣上设有若干之卡塊（363)，另於該固定座（3)頂端設有一 凸柱（37)。 置物架（4)，其係供樞接於固定座（3)上，該置物架（4) 二側分別設有第一樞接座（41)，該二第一框接座（41)外侧 分別一體成型有主動齒輪（42)，該主動齒輪（42)上係設有 一軸孔（421)，又於置物架（4)之中段處係設有第二樞接座 修（43) ’該第二樞接座（43)上則設有樞孔（以）。 把手架（5)，係套設於主支桿（1)之伸縮座（14)内，以 供上、下伸縮移動，該把手架（5)上係樞接有一伸縮連桿 (51)，該伸縮連桿（51)另端設有樞孔（52)，以供第三樞接 元件（5 3)穿設樞接。 組合時，如第二圖所示，係將該輪座（2)及固定座（3) 之槽孔（22)、（31)依序套合於主支桿（1)之支撐桿（11)上， 並使固定座（3)頂端之凸柱（37)可以凸伸於輪座（2)底緣之 M274293 滑槽（24)内進行定位滑移，再將從動齒輪（36)之軸孔（361) 對合於固定座（3)之第一透孔（32)外緣，以供第一樞接元件 (34) 穿設樞接，使該從動齒輪（36)扇形塊（362)之卡塊 (363)，可以卡抵於輪座（2)底緣之嵌槽（23)内〔如第三、 四圖所示〕，再將置物架（4)上主動齒輪（42)之軸孔（421) 對合於固定座（3)之第二透孔（33)外緣，以供第二樞接元件 (35) 穿設樞接，使該主動齒輪（42)可以與從動齒輪（36)相 喃合，最後將該把手架（5)上伸縮連桿（51)之框孔（52)，與 _ 置物架（4)第二樞接座（43)之樞孔（44)相對合，以供第三樞 接元件（5 3)穿設樞接，如此，則可供迅速組裝完成。 使用時，如第五圖所示，當欲收合置物架（4)及輪子（21) 時，只需將置物架（4)向上收折，當置物架（4)向上轉動時， •係可連帶使置物架（4)二側第一樞接座（41)之主動齒輪（42) 同步向上轉動90°，當主動齒輪（42)轉動90°時，則其所嚙 合之從動齒輪（36)係隨之轉動90°，當從動齒輪（36)轉動 時，則其扇形塊（362)周緣上之卡塊（363)，係可卡抵於輪 *座（2)之嵌槽（23)内使其旋轉，則該輪座（2)係可於支撐桿 (11)上旋轉1/4圈，如此，當置物架（4)完全收合於支撐桿 (11)上時，則輪座（2)係可同時帶動輪子（21)收合貼齊於支 撐桿（11)侧緣〔如第六圖所示〕。 當欲展開置物架（4)及輪子（21)時，則可反向轉動置物 架（4)，以利用主動齒輪（42)帶動從動齒輪（36)反向轉動， 使該輪座（2)連動輪子（21)展開，而達到迅速展開之作用。 【圖式簡單說明】 M274293 第一圖係為本創作之立體分解圖。 第二圖係為本創作之立體組合圖。 第二圖係為本創作主、從動齒輪之嚙合示意圖。 第四圖係為本創作主、從動齒輪嚙合之剖視圖。 第五圖係為本創作之置物架收合示意圖。 第六圖係為本創作之完整收合示意圖。 第七圖係為習知手推車之構造示意圖。 第八圖係為習知手推車之齒輪嚙合示意圖。 【主要元件符號說明】 (1) 主支桿 (11) 支撐桿 (12) 第一透孔 (13) 第二透孔 (14) 伸縮座 (2) 輪座 (21) 輪子 (22) 槽孔 (23) 嵌槽 (24) 滑槽 (3) 固定座 (31) 槽孔 (32) 第一透孔 (33) 第二透孔 (34) 第一框接元件 (35) 第二樞接元件 (36) 從動齒輪 (361) 軸孔 (362) 扇形塊 (363) 卡塊 (37) 凸柱 (4) 置物架 (41) 第一樞接座 (42) 主動齒輪 (421) 軸孔 (43) 第二樞接座 M274293 (44) 框孑L (5) (51) 伸縮連桿 (52) (53) 第二柩接元件 (A) (A1) 支撐桿 (A2) (A3) 輪子 (A4) (B) 把手桿 (C) (C1) 伸縮連桿 (C2) (C3) 齒輪 把手架M274293: 8. Description of the new type: [Technical field to which the new type belongs] This creation relates to a trolley retractable structure, in particular, a groove is provided on the bottom edge ring of the wheel seat, and the support rod of the main support rod is borrowed. A fixed seat is fixed through the first pivotal connecting member, and a driven gear is pivotally arranged on the outer edge of the fixed seat. The driven gear is provided with a clamping block for the card to fit into the recess of the wheel seat. It drives its rotation, and the first pivot joint seat of the rack is provided with a driving gear. The driving gear train meshes with the driven gear to drive its rotation, so that it can achieve the function of retracting. [Previous technology] According to the current, the trolleys generally used are fixed, so it takes up a lot of space, and it is not easy to store and carry, so it is improved into a collapsible trolley. Its structure is shown in Figure 7, with a main support A lever (A) is provided with a handle bar (B) which can be retracted and retracted, and a support rod (Ai) is protruded from the bottom of the two sides of the main support cup (A). The support rod (μ) is respectively provided with a rotatable wheel seat (A2), the wheel seat (A2) is provided with a wheel (A3), and the outer edge of the bottom of the wheel seat (A2) is 1/4 At the ring position, there is a tooth groove (A4) [as shown in the eighth figure], and a rack (C) is pivotally arranged at the bottom of the support rod (A1), and the rack (0 is connected with a telescopic link) Lever (C1), the other end of the telescopic link (C1) is connected to the handle bar (B), and the rack (c) is provided with a U-shaped pivot joint (C2) on each side, and the pivot A gear (C3) is fixed on the inner side of one of the connecting parts (C2) for meshing with the tooth groove (A4) M274293 of the wheel base (A2). When the rack (C) is folded, the rack (C )pivot The gear (C3) in the part (C2) can be turned up to 90 °, and the meshed wheel seat (A2) and the tooth groove (A4) can be rotated relatively 1/4 turn, and the wheel seat (A2) is rotated accordingly. 1/4 turn, so that the wheel (A3) can be folded on the side edge of the support rod (A1). In this way, it can be used to fold the rack (C) and the wheel (A3) synchronously [please refer to Figure 6 】, To achieve the effect of easy to collapse. However, the retractable structure of these trolleys, but because of the pivot (C2) of the shelf (C), must be able to accommodate the support rod (A) of the support rod ( A1), so the size of the gap cannot be reduced, which causes the area of the rack (C) to be too large and takes up a large space, and the tooth groove (A4) on the wheel seat (A2) is located at the outer edge position Therefore, the meshing with the gear (C3) is easy to jump and slip off, and even cause broken teeth and cannot be rotated, so it is not ideal for use. [New content] In view of the retractable structure of the conventional trolley, it has The aforesaid shortcomings, therefore, the present invention is to provide a trolley folding structure, which consists of a support bar protruding from the bottom of the main support rod, and the main support rod. A telescopic seat is arranged on the wheel seat, and the wheel seat is fitted on the support pole of the main support rod. The wheel seat is provided with a wheel, and the wheel seat is provided with a slot, and the fixed seat is fixed on the support rod of the main support rod. It is provided with a slot, and the rack is provided for pivotal connection to a fixed seat. The two sides of the rack are respectively provided with a first pivot seat, and the handle rack is sleeved in the telescopic seat of the main support rod. The upper system is pivotally connected with a telescopic link, and the other end of the telescopic link is pivotally connected to the rack. Its main characteristics are: the bottom edge of the wheel seat is provided with a recess, and the M274293 main pole is the branch. The rod is provided with a first through hole, and the fixed base is oppositely provided with a first through hole. The support rod and the first through hole of the fixed base are provided with a first pivoting element penetrating through the first pivoting element. A driven gear is pivotally arranged on the outer edge of the fixed seat. The driven # wheel is provided with a clamping block for being stuck in the groove of the wheel seat to drive its rotation, and the first pivot of the rack is connected. A driving gear is arranged on the seat, and the driving gear is coupled with the driven window wheel to drive it to rotate. This creative embodiment does have the following advantages: 1. The driving gear train of this creative is integrally formed outside the first pivot joint Φ, so when it is coupled with the driven gear, the first pivot joint seat does not need to be larger. The 'pitch size' can therefore help reduce the area of the racks to save manufacturing costs and not take up space. 2 · This creation is provided with a recessed groove on the bottom edge of the wheel seat, and a fan-shaped block is connected to the side of the driven gear. The periphery of the fan-shaped block is provided with a clamping block for the card to abut against the recessed slot, and Really drive, it will not cause the situation that the jumping gear cannot be transmitted. [Embodiment] # First, please refer to the first and second figures, this creation mainly includes the main pole (1), the wheel seat (2), the fixed seat (3), the shelf (4) and the handle frame (5), wherein: the main support rod (1) has support rods (11) protruding from the bottom of the two sides, and the two support rods (11) are respectively provided with a first through hole (12) and a second through hole. (13) A telescopic seat is provided at the top of the two sides of the main support rod (1). The wheel seat (2) is sleeved on the support rod (11) of the main support rod (1). The wheel seat (2) is provided with a wheel (21), and the wheel seat (2) is provided with a slot. M274293-(22) 'The bottom edge ring of the wheel seat (2) is provided with a plurality of recessed grooves (23), and a slide groove (24) is provided at the bottom edge of the wheel seat (2). The fixing base (3) is fixed on the supporting rod (11) of the main support rod (丨), and is provided with a slot hole (31). The fixing base (3) is provided with first through holes (32), respectively. ) And a second through-hole (33), the first through-hole (32) and the second through-hole (33) are respectively provided for the first pivoting element (34) and the second pivoting element (35) to pass through, wherein The first pivoting element (34) is pivotally provided with a driven gear (36) on the outer edge of the fixed seat (3), and the driven gear (36) is provided with a shaft hole (361) and driven teeth A fan-shaped block (362) is connected to the side of the φ wheel (36), a plurality of clamping blocks (363) are arranged on the periphery of the fan-shaped block (362), and a convex post (3) is provided on the top of the fixed seat (3). 37). A rack (4) is provided for pivotal connection to a fixed base (3). The rack (4) is provided with first pivot joints (41) on two sides, and the two first frame joints (41) are outside. A driving gear (42) is integrally formed respectively, and a shaft hole (421) is provided on the driving gear (42), and a second pivot joint seat repair (43) is provided at the middle section of the rack (4). A pivot hole is provided on the second pivot joint seat (43). The handle frame (5) is sleeved in the telescopic seat (14) of the main support rod (1) for up and down movement. The handle frame (5) is pivotally connected with a telescopic link (51). The other end of the telescopic link (51) is provided with a pivot hole (52) for the third pivoting element (53) to pass through the pivotal connection. When combined, as shown in the second figure, the slot (22) and (31) of the wheel seat (2) and the fixed seat (3) are sequentially fitted to the support rod (11) of the main support rod (1). ), And the convex post (37) at the top of the fixed seat (3) can be protruded into the M274293 chute (24) of the bottom edge of the wheel seat (2) for positioning and sliding, and then the driven gear (36) The shaft hole (361) is mated with the outer edge of the first through hole (32) of the fixing seat (3), so that the first pivoting element (34) can be threaded through, so that the driven gear (36) sector block ( 362) can be snapped into the recessed groove (23) at the bottom edge of the wheel seat (2) (as shown in Figures 3 and 4), and then the drive gear (42) is placed on the rack (4) The shaft hole (421) is matched with the outer edge of the second through hole (33) of the fixing seat (3), so that the second pivoting element (35) can be pivoted, so that the driving gear (42) can be connected with The driven gear (36) is combined, and finally the frame hole (52) of the telescopic link (51) on the handle frame (5) and the pivot hole of the second pivot joint seat (43) of the rack (4) (44) Opposite for the third pivoting element (5 3) to be pivoted, so that it can be assembled quickly. In use, as shown in the fifth figure, when you want to close the shelf (4) and wheels (21), you just need to fold the shelf (4) upwards. When the shelf (4) is turned upwards, The driving gear (42) of the first pivot joint (41) on the two sides of the rack (4) can be synchronously rotated 90 ° upwards. When the driving gear (42) is rotated 90 °, the driven gear ( 36) is rotated by 90 °. When the driven gear (36) is rotated, the clamping block (363) on the periphery of the sector block (362) can be fitted into the groove of the wheel * seat (2) ( 23) to make it rotate, the wheel seat (2) can be rotated 1/4 turn on the support rod (11), so when the rack (4) is completely closed on the support rod (11), then The wheel seat (2) can simultaneously drive the wheel (21) to be folded and aligned on the side edge of the support rod (11) [as shown in the sixth figure]. When the rack (4) and the wheels (21) are to be unfolded, the rack (4) can be rotated in the reverse direction to use the driving gear (42) to drive the driven gear (36) to rotate in the reverse direction, so that the wheel base (2) ) The wheels (21) are unfolded to achieve rapid unfolding. [Schematic description] M274293 The first picture is a three-dimensional exploded view of this creation. The second picture is a three-dimensional combination picture of this creation. The second picture is the meshing diagram of the master and driven gears. The fourth picture is a cross-sectional view of the meshing of the master and driven gears. The fifth picture is a schematic diagram of the folding rack of the creation. The sixth picture is a complete collapse of the creation. The seventh figure is a schematic diagram of the structure of a conventional trolley. The eighth figure is a schematic diagram of gear meshing of a conventional trolley. [Description of main component symbols] (1) Main support rod (11) Support rod (12) First through hole (13) Second through hole (14) Telescopic seat (2) Wheel seat (21) Wheel (22) Slot hole (23) Insert slot (24) Slide slot (3) Fixing seat (31) Slot hole (32) First through hole (33) Second through hole (34) First frame connection element (35) Second pivot connection element (36) Drive gear (361) Shaft hole (362) Sector block (363) Clamp block (37) Convex column (4) Shelf holder (41) First pivot base (42) Drive gear (421) Shaft hole ( 43) Second pivot joint M274293 (44) Frame 孑 L (5) (51) Telescopic link (52) (53) Second coupling element (A) (A1) Support rod (A2) (A3) Wheel ( A4) (B) Handlebar (C) (C1) Telescopic Link (C2) (C3) Gear Handlebar
柩孑L 主支桿 輪座 齒槽 置物架 柩接部柩 孑 L Main pole Wheel seat Cogging Shelf 柩 接 部
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