JP7389706B2 - hand truck - Google Patents

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JP7389706B2
JP7389706B2 JP2020076403A JP2020076403A JP7389706B2 JP 7389706 B2 JP7389706 B2 JP 7389706B2 JP 2020076403 A JP2020076403 A JP 2020076403A JP 2020076403 A JP2020076403 A JP 2020076403A JP 7389706 B2 JP7389706 B2 JP 7389706B2
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tires
main frame
shape
frame
unicycle
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JP2021172180A (en
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準人 近藤
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有限会社松井工業
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Description

本発明は手押し運搬車に関し、特に道板などの狭小な場所も走行させることができ、しかも重い荷物を積載しても姿勢が安定してふらつきにくい運搬車に関する。 The present invention relates to a handcart, and more particularly to a handcart that can travel in narrow spaces such as road boards, has a stable posture and does not wobble even when loaded with heavy loads.

荷物や土砂の運搬には手押し一輪車がよく用いられている。手押し一輪車はフレームの下側中央にて回転軸に車輪を回動可能に軸支し、フレーム後方に左右のハンドルを延設する一方、フレームの下側後部に左右の補助脚を設け、停止時に補助脚を接地させる構造が採用されている(特許文献1)。しかし、手押し一輪車は重い荷物を積載すると、姿勢を安定させ難く、特に上り坂や下り坂では姿勢がフラフラして安定させにくく、荷物が落下してしまうことがある。 Wheelbarrows are often used to transport cargo and dirt. A push unicycle has a wheel rotatably supported on a rotating shaft at the center of the lower side of the frame, and has left and right handles extending to the rear of the frame, while left and right auxiliary legs are provided at the lower rear of the frame, so that when the wheel is stopped, A structure in which the auxiliary legs are grounded is adopted (Patent Document 1). However, when a push unicycle is loaded with heavy loads, it is difficult to stabilize its posture, especially when going uphill or downhill.

他方、手押し一輪車以外に手押し二輪車も知られている。従来の手押し二輪車ではフレームの下側に回転軸を車幅方向に延設し、回転軸に2つの車輪を相互に間隔をあけて回動可能に軸支する構造が採用されている(特許文献2、特許文献3)。 On the other hand, in addition to the push unicycle, push two-wheelers are also known. Conventional push two-wheeled vehicles employ a structure in which a rotating shaft is provided on the lower side of the frame and extends in the vehicle width direction, and two wheels are rotatably supported on the rotating shaft at a distance from each other (Patent Document 2, Patent Document 3).

実用新案登録第3187515号公報Utility model registration No. 3187515 特開2004-168246号公報Japanese Patent Application Publication No. 2004-168246 特開2006-240326号公報Japanese Patent Application Publication No. 2006-240326

しかし、従来の手押し二輪車では2つの車輪の間隔が広いので、狭小な場所、例えば工事現場における25cm幅程度の道板上を走行させることができない。 However, because the distance between the two wheels of the conventional push two-wheeled vehicle is wide, it is not possible to run it in a narrow place, for example, on a road board about 25 cm wide at a construction site.

本発明はかかる問題点に鑑み、道板などの狭小な場所も走行させることができ、しかも重い荷物を積載しても姿勢が安定してふらつきにくい手押し運搬車を提供することを課題とする。 In view of such problems, it is an object of the present invention to provide a handcart that can travel even in narrow spaces such as road boards, has a stable posture even when loaded with heavy loads, and is hard to wobble.

そこで、本発明に係る手押し運搬車は、狭小な場所でも安定した走行ができるようにした手押し運搬車であって、前半部が斜め上方に曲成された側面形状でかつ平面U字状をなす主フレームと、該主フレームに搭載固定された荷台と、上記主フレームの前半部下側に設けられ、平面U字状をなし、該U字状の両側辺の間に一輪車のタイヤ幅2本分の間隔があけられ、回転軸が車幅方向に延びて設けられたタイヤフレームと、該タイヤフレームの上記回転軸に隣接して軸支され、相互に同一方向及び逆方向への回転が可能である2本のタイヤと、上記主フレームの後半部下側に設けられた補助脚と、上記主フレームから後方に延びるハンドルと、を備えたことを特徴とする。 Therefore, the hand-held transport vehicle according to the present invention is a hand-held transport vehicle that can run stably even in narrow spaces, and the front half has a side surface shape that is curved diagonally upward and is U-shaped in plan. A main frame, a loading platform mounted and fixed on the main frame, and a U-shaped plane provided under the front half of the main frame, two widths of unicycle tires between both sides of the U-shape. A tire frame is provided with a rotation axis extending in the width direction of the vehicle, and the tire frame is rotatably supported adjacent to the rotation axis, so that the tire frame can rotate in the same direction and in opposite directions. The present invention is characterized in that it includes two tires, an auxiliary leg provided below the rear half of the main frame, and a handle extending rearward from the main frame.

本発明の特徴の1つは2本のタイヤを相互に隣接して軸支し、相互に同一方向及び逆方向への回転を可能となした点にある。 One of the features of the present invention is that two tires are pivoted adjacent to each other so that they can rotate in the same direction and in opposite directions.

これにより、タイヤの接地点が一輪車は1点であるが、本発明は2点になるため、重い荷物を積載してもふらつき難く、力の弱い女性や老人であっても安定に走行させることができ、又ぬかるみで使用しても沈みこみ難く、安定して走行させることができる。 As a result, the tire grounding point is one point for a unicycle, but the present invention has two points, so even if heavy loads are loaded, it is difficult to wobble, and even weak women and elderly people can run stably. Moreover, even when used in muddy conditions, it does not sink easily and can be run stably.

さらに、重い荷物を積載したときに上り坂や下り坂での使用時に安定感があり、又荷物を移すときにタイヤの接地点が2点になるため、正面に対し安定して荷物を移すことができ、さらに2つのタイヤが相互に逆方向に回転できるので、その場で運搬車を旋回させることができ、使い勝手がよい。 In addition, it provides a sense of stability when used on uphill or downhill slopes when loaded with heavy loads, and since there are two points of contact for the tires when moving the load, it is possible to move the load stably against the front. Furthermore, since the two tires can rotate in opposite directions, the transport vehicle can be turned on the spot, making it easy to use.

また、従来の一輪車と比較して狭小な場所、例えば25cm程度の道板の上を安定して走行させることができる。 In addition, compared to conventional unicycles, the unicycle can be stably run in a narrow space, for example, on a road board of about 25 cm.

タイヤを隣接して設けると、タイヤの間に土砂が詰まりやすくなる。そこで、タイヤの間に泥落とし用のアームを回転軸に揺動可能に設けるのがよい。 If tires are placed next to each other, dirt will easily get stuck between the tires. Therefore, it is preferable to provide a mud-removal arm between the tires so as to be able to swing around the rotating shaft.

本発明に係る手押し運搬車の好ましい実施形態を示す概略斜視図である。1 is a schematic perspective view showing a preferred embodiment of a handcart according to the present invention. 上記実施形態を示す底面図である。It is a bottom view showing the above-mentioned embodiment. 第2の実施形態を示す要部斜視図である。FIG. 7 is a perspective view of main parts showing a second embodiment.

以下、発明を図面に示す具体例に基づいて詳細に説明する。図1及び図2は本発明に係る手押し運搬車の好ましい実施形態を示す。図において、手押し運搬車10は金属パイプ製の主フレーム11 を備え、主フレーム11は前半部11Aが上側に曲成された側面形状をなすとともに、平面U字状に製作され、主フレーム11には荷台12が搭載されて固定されている。なお、荷台12は浅い形状のものを例示しているが、深い形状のものであってもよい。 Hereinafter, the invention will be described in detail based on specific examples shown in the drawings. 1 and 2 show a preferred embodiment of the hand truck according to the invention. In the figure, the handcart 10 is equipped with a main frame 11 made of a metal pipe. A loading platform 12 is mounted and fixed. In addition, although the loading platform 12 is illustrated as having a shallow shape, it may have a deep shape.

また、主フレーム11の前半部下側には金属パイプ製のタイヤフレーム13が設けられるとともに、補強パイプ13Aによって相互に連結されている。このタイヤフレーム13は平面U字状に製作され、U字状の両側辺部分13Bの間は一輪車のタイヤ幅2本分の間隔が形成され、両側辺部分13Bにはブラケットによって軸受17が設けられ、軸受17の間には回転軸14が車幅方向に延びて挿通され、ナット14Aによって取付けられている。 Further, a tire frame 13 made of a metal pipe is provided below the front half of the main frame 11, and is connected to each other by a reinforcing pipe 13A. This tire frame 13 is manufactured in a U-shape in plan, and a gap equivalent to two widths of unicycle tires is formed between both side portions 13B of the U-shape, and bearings 17 are provided with brackets on both side portions 13B. A rotating shaft 14 extends in the vehicle width direction and is inserted between the bearings 17, and is attached with a nut 14A.

回転軸14には一輪車の2本のタイヤ18が隣接して軸支され、2本のタイヤ18は相互に同一方向及び逆方向への回転が可能となっている。 Two tires 18 of a unicycle are supported adjacent to each other on the rotating shaft 14, and the two tires 18 can rotate in the same direction and in opposite directions.

また、主フレーム11の後半部下側には左右一対の補助脚15が取付けられ、更に主フレーム11の後端には金属パイプ製のハンドル16が後方に延びて設けられている。 A pair of left and right auxiliary legs 15 are attached to the lower half of the main frame 11, and a handle 16 made of a metal pipe is provided at the rear end of the main frame 11 to extend rearward.

以上のように、2本のタイヤ18を相互に隣接して軸支し、相互に同一方向及び逆方向への回転を可能に構成したので、タイヤ18の接地点が一輪車は1点であるが、本例の手押し運搬車では2点になるため、重い荷物を積載してもふらつき難く、力の弱い女性や老人であっも安定に走行させることができ、又ぬかるみで使用しても沈みこみ難く、安定して走行させることができる。 As described above, since the two tires 18 are pivoted adjacent to each other and are configured to be able to rotate in the same direction and in opposite directions, the grounding point of the tires 18 is only one point on a unicycle, whereas a unicycle has one point. The push truck in this example has two points, so it does not wobble even when loaded with heavy loads, can be operated stably even by weak women and elderly people, and does not sink even when used in muddy conditions. It is difficult to drive and can be run stably.

さらに、重い荷物を積載したときに上り坂や下り坂での使用時に安定感があり、又荷物を移すときにタイヤ18の接地点が2点になるため、正面に対し安定して荷物を移すことができ、さらに2つのタイヤ18が相互に逆方向に回転できるので、その場で運搬車を旋回させることができ、使い勝手がよい。 Furthermore, when carrying a heavy load, there is a sense of stability when using it on uphill or downhill slopes, and since the tires 18 have two contact points when moving the load, the load can be moved stably in front of the vehicle. Furthermore, since the two tires 18 can rotate in opposite directions, the transport vehicle can be turned on the spot, making it easy to use.

また、従来の一輪車と比較して狭小な場所、例えば25cm程度の道板の上を安定して走行させることができる。 In addition, compared to conventional unicycles, the unicycle can be stably run in a narrow space, for example, on a road board of about 25 cm.

2本のタイヤ18を隣接して設けると、タイヤ18の間に土砂が詰まりやすくなる。そこで、タイヤの間に泥落とし用のアーム20を回転軸に揺動可能に設けるのがよい。 If two tires 18 are provided adjacent to each other, earth and sand will easily become clogged between the tires 18. Therefore, it is preferable to provide an arm 20 for removing mud between the tires so as to be able to swing around a rotation axis.

10 手押し運搬車
11 主フレーム
12 荷台
13 タイヤフレーム
14 回転軸
15 補助脚
16 ハンドル
18 タイヤ
20 アーム
10 Hand truck 11 Main frame 12 Loading platform 13 Tire frame 14 Rotating shaft 15 Auxiliary leg 16 Handle 18 Tire 20 Arm

Claims (1)

狭小な場所でも安定した走行ができるようにした手押し運搬車であって、前半部が上側に曲成された側面形状でかつ平面U字状をなす主フレーム(11)と、該主フレーム(11)に搭載固定された荷台(12)と、上記主フレーム(11)の前半部下側に設けられ、平面U字状をなし、該U字状の両側辺の間に一輪車のタイヤ幅2本分の間隔があけられ、回転軸が車幅方向に延びて設けられたタイヤフレーム(13)と、該タイヤフレーム(13)の上記回転軸に隣接して軸支され、相互に同一方向及び逆方向への回転が可能である2本のタイヤ(18)と、上記主フレーム(11)の後半部下側に設けられた補助脚(15)と、上記主フレーム(11)から後方に延びるハンドル(16)と、を備え、
上記タイヤ(18)の間に泥落とし用のアーム(20)が上記回転軸に揺動可能に設けられ、該泥落とし用アーム(20)の先端側段部が上記タイヤフレーム(13)に当接されていることを特徴とする手押し運搬車。
This handcart is capable of running stably even in narrow spaces, and includes a main frame (11) whose front half has an upwardly curved side surface and a U-shape in plan; ) and a loading platform (12) mounted and fixed on the main frame (11), which is provided under the front half of the main frame (11), forming a U-shape in plan, and between both sides of the U-shape, two widths of unicycle tires are provided. A tire frame (13) is provided with a rotation axis extending in the vehicle width direction, and the tire frame (13) is rotatably supported adjacent to the rotation axis, and rotates in the same direction and in opposite directions. two tires (18) that can be rotated to ) and ,
A mud-removing arm (20) is swingably provided on the rotating shaft between the tires (18), and the distal end step of the mud-removing arm (20) is in contact with the tire frame (13). A hand truck characterized by the fact that it is connected to the vehicle.
JP2020076403A 2020-04-23 2020-04-23 hand truck Active JP7389706B2 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3045875U (en) 1997-05-20 1998-02-20 博之 山下 Truck frame for simple carrier and simple carrier set
JP2007145215A (en) 2005-11-29 2007-06-14 Takada Seisakusho:Kk Two-wheel hand cart
CN108515993A (en) 2018-04-19 2018-09-11 李广连 A kind of construction site garbage impurity-removing device
CN212579872U (en) 2020-02-15 2021-02-23 周克祥 Concrete is with conveyer that has stability
CN218055306U (en) 2022-08-24 2022-12-16 青岛鑫海盛唐金属制造有限公司 Protective device for handcart
CN218505881U (en) 2022-11-11 2023-02-21 日照友和车辆股份有限公司 Vehicle framework and trolley

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54141653U (en) * 1978-03-24 1979-10-02
JPS63115870U (en) * 1987-01-23 1988-07-26
JPH0858596A (en) * 1994-08-18 1996-03-05 Mamoru Norioka Trolley
JPH09328059A (en) * 1996-06-10 1997-12-22 Kubota Corp Mud guard structure for steering wheel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3045875U (en) 1997-05-20 1998-02-20 博之 山下 Truck frame for simple carrier and simple carrier set
JP2007145215A (en) 2005-11-29 2007-06-14 Takada Seisakusho:Kk Two-wheel hand cart
CN108515993A (en) 2018-04-19 2018-09-11 李广连 A kind of construction site garbage impurity-removing device
CN212579872U (en) 2020-02-15 2021-02-23 周克祥 Concrete is with conveyer that has stability
CN218055306U (en) 2022-08-24 2022-12-16 青岛鑫海盛唐金属制造有限公司 Protective device for handcart
CN218505881U (en) 2022-11-11 2023-02-21 日照友和车辆股份有限公司 Vehicle framework and trolley

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