JP3656524B2 - Omnidirectional wheel - Google Patents

Omnidirectional wheel Download PDF

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Publication number
JP3656524B2
JP3656524B2 JP2000217961A JP2000217961A JP3656524B2 JP 3656524 B2 JP3656524 B2 JP 3656524B2 JP 2000217961 A JP2000217961 A JP 2000217961A JP 2000217961 A JP2000217961 A JP 2000217961A JP 3656524 B2 JP3656524 B2 JP 3656524B2
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Japan
Prior art keywords
barrel
wheel
omnidirectional
roller
support
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JP2000217961A
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Japanese (ja)
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JP2002029202A (en
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裕史 前田
茂喜 藤原
秀樹 山下
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、配膳車、車椅子等の台車に取付けて平面内において全方向に走行させるため、又、床に敷きつめて荷物を全方向に移動するための全方向走行用車輪に関し、詳しくは、損傷されやすい樽形ローラの長さ方向の端部の強度を高めて樽形ローラの寿命を延ばそうとする技術に係るものである。
【0002】
【従来の技術】
従来、全方向走行用車輪Aaにおいては、図10に示す特公昭52−10269号公報のように、回転支持体5aの同心円上に回転支持体5aの回転方向に対して直交する方向に回転するように複数の樽形ローラ3aを等間隔に軸支した車輪構成体6aの複数個を互いに位相を1/2ずらして構成しているもの。又、図11に示す特開昭62−91302号公報のように、同様な構成において、全方向走行用車輪Abの樽形ローラ3bはその外周が弾性体2aにて形成されている。更に、図12(a)に示す他の従来例においては、同様な構成の全方向走行用車輪の樽形ローラ3cは、パイプ状の芯材1aに全方向走行用車輪の車輪外周円と略等しい半径を持つゴムのような弾性体2bをライニングした構成のものや、同図(b)に示すように、樽形ローラ3dを樹脂やアルミニウムの一体物で構成するものがある。
【0003】
【発明が解決しようとする課題】
上記全方向走行用車輪Aa、Abの樽形ローラ3a〜3dにおいて、台車に用いるときで走行する路面に段差hがある場合、又、床に敷きつめるフリーテーブルとして用いるときで搬送物に突起がある場合に、樽形ローラ3a…に路面の段差hや搬送物の突起が衝突するのである。
【0004】
ところで、樽形ローラ3a…の長さ方向の中央部付近に段差hや突起が衝突する場合には、衝突により生じる応力は分散されて樽形ローラ3a…が損傷されることは回避することができるが、樽形ローラ3a…の長さ方向の端部に段差hや突起が衝突する場合には、応力が分散されることがなくて端部が引き剥がされるような損傷を受けることがある(図13参照)。
【0005】
又、段差hや突起に対して全方向走行用車輪Aaの樽形ローラ3a…が斜めに進行した場合等において、回転支持体5aが段差hや突起に衝突する場合がある(図14(b)参照)。
【0006】
回転支持体5aは樽形ローラ3a…を支持して荷重を受けるのであり、重量物を扱う場合に、回転支持体5aは鋼鉄やアルミニウム合金等の剛性の高い材料を使用するのであり、対象物を傷つけることになるものである。
【0007】
反対に、対象物が鋼鉄等の剛性の高い材料で構成されている場合、回転支持体5aが傷ついたり、変形してしまうことがあり、樽形ローラ3a…の回転を阻害して本来の全方向に走行する機能を損なうことになるものである。
【0008】
そこで、樽形ローラ3a…の外縁をつなぐ全方向走行用車輪Aaの外周に比べて回転支持体5aの外周を小にして、車輪Aaの外周と回転支持体5aの外周の差を大にすることで、回転支持体5aが対象物に衝突しないようにすることも考えられる。ところが、このような構成においては、樽形ローラ3a…の端部側面が段差hのような対象物に衝突して樽形ローラ3a…の端部が破損されるのである。
【0009】
本発明はこのような問題に鑑みてなされたものであり、損傷されやすい樽形ローラの長さ方向の端部の強度を高めて樽形ローラの寿命を延ばすことができる全方向走行用車輪を提供することを課題とするものである。
【0010】
【課題を解決するための手段】
請求項1においては、回転軸4にて回転自在に支持した回転支持体5の外周部に樽形ローラ3の複数を回転支持体5の回転軸4に対して直交する方向に回転自在に取付けて車輪構成体6を形成し、複数の車輪構成体6を回転支持体5の回転軸4の軸方向に並設した全方向走行用車輪であって、樽形ローラ3の長さ方向の端部材16が長さ方向の中央部材17に比べて剛性の高い材料にて形成するとともに端部材16を中央部材17に対して着脱自在に構成してあることを特徴とするものである。このような構成によれば、樽形ローラ3の端部の強度を高めて段差や突起に衝突しても樽形ローラ3の端部が損傷されることがなく、樽形ローラ3の寿命を延ばすことができ、商品価値を高めることができる。しかも、損傷されやすい端部材16を取外して交換することができ、樽形ローラ3の寿命を、一層、延ばすことができる。
【0011】
請求項2においては、樽形ローラ3の端部材16を中央部材3bに対して着脱自在に構成してあることを特徴とするものである。このような構成によれば、損傷されやすい端部材16を取外して交換することができ、樽形ローラ3の寿命を、一層、延ばすことができる。
【0013】
請求項2においては、回転軸4にて回転自在に支持した回転支持体5の外周部に樽形ローラ3の複数を回転支持体5の回転軸4に対して直交する方向に回転自在に取付けて車輪構成体6を形成し、複数の車輪構成体6を回転支持体5の回転軸4の軸方向に並設した全方向走行用車輪であって、回転支持体5の外周部の樽形ローラ3が存在しない部分を覆う外周隠し部材19を回転支持体5に着脱自在に設けてあることを特徴とするものである。このような構成によれば、回転支持体5において樽形ローラ3が存在していない部分を外周隠し部材19にて覆うことで、回転支持体5が段差等に衝突するのを防止することができ、回転支持体5の耐久性を向上させることができ、かつ、外周隠し部材19は交換することができることから、外周隠し部材19のコストを抑えることができる。
【0015】
請求項3においては、外周隠し部材19を内外の二層構造に構成し、外層材19aと内層材19bとの色を異ならせてあることを特徴とするものである。このような構成によれば、外周隠し部材19の外層材19aが摩耗すると異なる色の内層材19bが現れて外周隠し部材19の交換時期を知ることができる。
【0016】
【発明の実施の形態】
以下、本発明の実施の形態を説明する。図1(a)は全方向走行用車輪の概略正面図、同図(b)は全方向走行用車輪の概略側面図、同図(c)は樽形ローラの断面図である。図3(a)は手押し台車の斜視図、同図(b)は同上の底面図である。
【0017】
本発明の全方向走行用車輪Aは、例えば、手押し台車8の車輪として使用され、床平面を全方向に自在に走行させるものであり、配膳車、車椅子等に使用することができる。以下、詳述する。
【0018】
全方向走行用車輪Aは、回転軸4にて回転自在に支持した回転支持体5の外周部に回転軸4に略直交させて軸9を設け、これら軸9に樽形ローラ3を軸受10を介して回転自在に支持して車輪構成体6を形成し、このような車輪構成体6の複数を回転支持体5の回転軸4の軸方向に並設して構成している。図1(b)においては車輪構成体6の2組を並列にしているが、3列以上並べるようにしてもよいものである。又、複数の車輪構成体6…の回転支持体5を一体化してもよいものである。
【0019】
樽形ローラ3は、鋼鉄、アルミニウム合金、マグネシウム合金、強化プラスチック等の剛性の高い材料にて一体化した構成のものや、鋼鉄、アルミニウム合金、マグネシウム合金、強化プラスチック等の剛性の高い材料にて形成した芯材1の周囲に弾性体2を付設する二重構造のものがある(図1(c)参照)。弾性体2は、ウレタンゴム、ブタジエンゴム、天然ゴム等のゴムを用いるのであり、衝撃吸収性が良く、手に入り易く、安価となるものである。芯材1の形状としては、図1(c)に示すパイプ状のものや図2に示す樽形のものが考えられる。このように芯材1と弾性体2との二重構造であれば、構造体として強度を保ちながら、対象面に傷を付けにくくなるものである。
【0020】
このように樽形の芯材1の周囲を弾性体2にて覆った樽形ローラ3を使用する全方向走行用車輪Aの場合に、従来の技術及び発明が解決しようとする課題の欄で述べたように、段差を乗り越える時に、樽形ローラ3の端部を損傷しやすいものであるが、本発明においては、このような問題を解消しようとするものである。以下、詳述する。
【0021】
図4に示すように、樽形ローラ3の長さ方向の端部材16が長さ方向の中央部材17に比べて剛性の高い材料にて形成してある。具体的には、弾性体2の端部材16に中央部材17に比べて剛性の高い強化プラスチックや高強度ウレタン等を用いて樽形ローラ3の端部の損傷を防止するものである。
【0022】
しかして、樽形ローラ3の端部の強度を高めて段差や突起に衝突しても樽形ローラ3の端部が損傷されることがなく、樽形ローラ3の寿命を延ばすことができ、商品価値を高めることができるものである。
【0024】
本実施の形態においては、図5に示すように、樽形ローラ3の長さ方向の端部材16が長さ方向の中央部材17に比べて剛性の高い材料にて形成し、かつ、端部材16を中央部材17に対して着脱自在にしている。具体的には、樽形ローラ3の両端部に例えば、芯材1を凸部として筒形にした端部材16を係合させるようにしたものである。他に着脱自在とする構成は種々変更することができる。
【0025】
しかして、損傷されやすい端部材16を取外して交換することができ、樽形ローラ3の寿命を、一層、延ばすことができるものである。
【0026】
図6は参考例を示し、但し、基本構成は上記実施の形態と共通であり、共通する部分には同一の符号を付して説明は省略する。
【0027】
同図(a)においては、樽形ローラ3は芯材1と芯材1の外周を覆う弾性体2から構成し、芯材1のローラ長さ方向の端部に芯材1の強度を高める補強部材18を付設したものである。
【0028】
本参考例においては、芯材1の端部に付設した補強部材18によって樽形ローラ3の端部の強度を高めることができ、樽形ローラ3の端部が段差hや突起に衝突しても傷つきやすい弾性体2で荷重を受けないで補強部材18とともに芯材1にて荷重を受けることができ、樽形ローラ3の端部が損傷されることがなく、樽形ローラ3の寿命を延ばすことができ、商品価値を高めることができるものである。
【0029】
同図(b)の参考例においては、芯材1を樽形に形成して補強部材18を付設して樽形ローラ3の端部の強度を高めるようにしたものである。
【0030】
同図(c)の参考例においては、パイプ状の芯材1の両端部に環状板の補強部材18を付設して樽形ローラ3の端部の強度を高めるようにしたものである。
【0031】
図6の参考例における補強部材18は芯材1に一体化してもねじ締め等にて連結してもよいものである。
【0032】
図7は更に他の実施の形態を示し、但し、本実施の形態の基本構成は上記実施の形態と共通であり、共通する部分には同一の符号を付して説明は省略する。
【0033】
本実施の形態においては、回転支持体5の外周部の樽形ローラ3が存在しない部分を覆う外周隠し部材19を回転支持体5に着脱自在に設けたものである。具体的には、MCナイロン、6−ナイロン等の合成樹脂製の外周隠し部材19をねじ具21にて回転支持体5に取外し自在に取付けている。
【0034】
しかして、回転支持体5において樽形ローラ3が存在していない部分を外周隠し部材19にて覆うことで、回転支持体5が段差等に衝突するのを防止することができ、回転支持体5の耐久性を向上させることができ、かつ、外周隠し部材19は交換することができることから、外周隠し部材19のいずれかが消耗や破損した場合でも、外周隠し部材19の全体や車輪全体を交換しなくてもよいので、外周隠し部材19のコストを抑えることができるものである。
【0035】
図8は更に他の参考例を示し、但し、基本構成は上記実施の形態と共通であり、共通する部分には同一の符号を付して説明は省略する。
【0036】
本参考例においては、回転支持体5の外周部を中央部より剛性の低い外周部材20にて覆っているものである。具体的には、金属製の回転支持体5の外周部にゴムや合成樹脂製の弾性材料の外周部材20にて覆っているものである。
【0037】
しかして、回転支持体5の外周部が段差等に衝突した場合の衝撃を緩和することができ、段差や樽形ローラ3の損傷を防止することができるものである。
【0038】
ところで、回転支持体5の外周部分を中央部とは別部材にて構成し、この外周部分を中央部に比べて剛性の低い弾性材料、例えば、樹脂、ラバー等のコーティング等にて形成してもよいものである。
【0039】
図9は更に他の実施の形態を示し、但し、本実施の形態の基本構成は上記実施の形態と共通であり、共通する部分には同一の符号を付して説明は省略する。
【0040】
本実施の形態においては、外周隠し部材19を内外の二層構造に構成し、外層材19aと内層材19bとの色を異ならせたものである。例えば、内層材19bとしてアルミニウム、外層材19aとしてゴム、ナイロン等の合成樹脂をコーティングしたもの、又、内層材19bとして白ナイロン、外層材19aとしてグレーナイロン等の色違いの合成樹脂を一体成形したものを採用することができる。
【0041】
しかして、外周隠し部材19の外層材19aが摩耗すると異なる色の内層材19bが現れて外周隠し部材19の交換時期を知ることができるものである。
【0042】
尚、本発明の全方向走行用車輪Aは、床に敷きつめて荷物を全方向に移動するフリーフロアーに実施することができることは言うまでもない。
【0043】
【発明の効果】
請求項1においては、回転軸にて回転自在に支持した回転支持体の外周部に樽形ローラの複数を回転支持体の回転軸に対して直交する方向に回転自在に取付けて車輪構成体を形成し、複数の車輪構成体を回転支持体の回転軸の軸方向に並設した全方向走行用車輪であって、樽形ローラの長さ方向の端部材が長さ方向の中央部材に比べて剛性の高い材料にて形成するとともに端部材を中央部材に対して着脱自在に形成してあるから、樽形ローラの端部の強度を高めて段差や突起に衝突しても樽形ローラの端部が損傷されることがなく、樽形ローラの寿命を延ばすことができ、商品価値を高めることができるという利点がある。しかも、損傷されやすい端部材を取外して交換することができ、樽形ローラの寿命を、一層、延ばすことができるという利点がある。
【0046】
請求項2においては、回転軸にて回転自在に支持した回転支持体の外周部に樽形ローラの複数を回転支持体の回転軸に対して直交する方向に回転自在に取付けて車輪構成体を形成し、複数の車輪構成体を回転支持体の回転軸の軸方向に並設した全方向走行用車輪であって、回転支持体の外周部の樽形ローラが存在しない部分を覆う外周隠し部材を回転支持体に着脱自在に設けてあるから、回転支持体において樽形ローラが存在していない部分を外周隠し部材にて覆うことで、回転支持体が段差等に衝突するのを防止することができ、回転支持体の耐久性を向上させることができ、かつ、外周隠し部材は交換することができることから、外周隠し部材のコストを抑えることができるという利点がある。
【0048】
請求項3においては、請求項2の構成に加えて、外周隠し部材を内外の二層構造に構成し、外層材と内層材との色を異ならせてあるから、請求項2の効果に加えて、外周隠し部材の外層材が摩耗すると異なる色の内層材が現れて外周隠し部材の交換時期を知ることができるという利点がある。
【0049】
請求項4においては、請求項1又は2に記載の構成に加えて、手押し台車に適用することから、請求項1又は2の効果に加えて、全方向に移動ができ、耐久性に優れ、かつ、コストのかからない手押し車を得ることができるという利点がある。
【図面の簡単な説明】
【図1】 本発明の実施の一形態を示し、(a)は全方向走行用車輪の概略正面図、(b)は概略側面図、(c)は樽形ローラの参考例の断面図である。
【図2】 同上の参考例の樽形ローラの断面図である。
【図3】 (a)は同上の手押し台車の斜視図、(b)は同上の概略底面図である。
【図4】 同上の樽形ローラの説明図である。
【図5】 (a)(b)は同上の説明図である。
【図6】 同上の他の参考例を示し、(a)(b)(c)は樽形ローラの断面図である。
【図7】 同上の更に他の実施の形態を示し、(a)は概略分解正面図、(b)は概略側面図である。
【図8】 同上の更に他の参考例を示し、(a)は概略正面図、(b)は概略側面図である。
【図9】 同上の更に他の実施の形態を示す外周隠し部材の断面図である。
【図10】 従来例を示し、(a)は正面図、(b)は側面図である。
【図11】 他の従来例を示す斜視図である。
【図12】 他の従来例を示し、(a)(b)は概略断面図である。
【図13】 従来例の断面図である。
【図14】 (a)は従来例の上面図、(b)は斜視図である。
【符号の説明】
3 樽形ローラ
4 回転軸
5 回転支持体
6 車輪構成体
16 端部材
17 中央部材
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an omnidirectional traveling wheel for traveling in all directions within a plane by being attached to a cart such as a wheelchair or a wheelchair, and more specifically, for omnidirectional traveling wheels for laying on the floor and moving a load in all directions. The present invention relates to a technique for increasing the strength of the end portion in the length direction of a barrel-shaped roller that is easily performed to extend the lifetime of the barrel-shaped roller.
[0002]
[Prior art]
Conventionally, the omnidirectional running wheel Aa rotates on a concentric circle of the rotating support 5a in a direction orthogonal to the rotating direction of the rotating support 5a as shown in Japanese Patent Publication No. 52-10269 shown in FIG. In this way, a plurality of wheel components 6a each having a plurality of barrel rollers 3a that are supported at equal intervals are configured so that the phases thereof are shifted from each other by 1/2. In addition, as in JP-A-62-91302 shown in FIG. 11, in the same configuration, the barrel roller 3b of the omnidirectional running wheel Ab is formed with an elastic body 2a on the outer periphery. Furthermore, in the other conventional example shown in FIG. 12A, the barrel roller 3c of the omnidirectional traveling wheel having the same configuration is substantially the same as the outer peripheral circle of the omnidirectional traveling wheel on the pipe-shaped core 1a. There are a configuration in which an elastic body 2b such as rubber having the same radius is lined, and a barrel-shaped roller 3d is configured by an integral body of resin or aluminum as shown in FIG.
[0003]
[Problems to be solved by the invention]
In the barrel-shaped rollers 3a to 3d of the omnidirectional running wheels Aa and Ab, when there is a step h on the running road surface when used for a carriage, or when used as a free table to be laid on the floor, a protrusion is formed on the conveyed product. In some cases, the step h on the road surface and the protrusion of the conveyed product collide with the barrel rollers 3a.
[0004]
By the way, when the step h or the projection collides near the central portion in the length direction of the barrel rollers 3a, it is possible to avoid the stress caused by the collision being dispersed and damaging the barrel rollers 3a. However, when a step h or a protrusion collides with the end of the barrel roller 3a in the length direction, the stress may not be dispersed and the end may be damaged. (See FIG. 13).
[0005]
Further, when the barrel roller 3a of the omnidirectional traveling wheel Aa travels obliquely with respect to the step h and the protrusion, the rotary support 5a may collide with the step h and the protrusion (FIG. 14B). )reference).
[0006]
The rotating support 5a supports the barrel roller 3a ... and receives a load. When handling heavy objects, the rotating support 5a uses a highly rigid material such as steel or aluminum alloy, Will be hurt.
[0007]
On the other hand, when the object is made of a highly rigid material such as steel, the rotating support 5a may be damaged or deformed, and the rotation of the barrel roller 3a ... The function of traveling in the direction is impaired.
[0008]
Therefore, the outer periphery of the rotating support 5a is made smaller than the outer periphery of the omnidirectional traveling wheel Aa connecting the outer edges of the barrel rollers 3a, and the difference between the outer periphery of the wheel Aa and the outer periphery of the rotating support 5a is increased. Thus, it can be considered that the rotary support 5a does not collide with the object. However, in such a configuration, the side surface of the barrel roller 3a ... collides with an object such as a step h, and the end of the barrel roller 3a ... is damaged.
[0009]
The present invention has been made in view of such a problem, and provides an omnidirectional running wheel that can increase the strength of the end of the barrel roller that is easily damaged and extend the life of the barrel roller. The issue is to provide.
[0010]
[Means for Solving the Problems]
According to the first aspect, a plurality of barrel rollers 3 are attached to the outer peripheral portion of the rotary support 5 rotatably supported by the rotary shaft 4 so as to be rotatable in a direction perpendicular to the rotary shaft 4 of the rotary support 5. The wheel constituting body 6 is formed, and a plurality of wheel constituting bodies 6 are arranged in parallel in the axial direction of the rotating shaft 4 of the rotating support 5, and are the wheels in the longitudinal direction of the barrel roller 3. The member 16 is formed of a material having higher rigidity than the central member 17 in the length direction, and the end member 16 is configured to be detachable from the central member 17 . According to such a configuration, the end of the barrel roller 3 is not damaged even if the strength of the barrel roller 3 is increased to collide with a step or a protrusion, and the lifetime of the barrel roller 3 is increased. The product value can be increased. Moreover, the end member 16 that is easily damaged can be removed and replaced, and the life of the barrel roller 3 can be further extended.
[0011]
In claim 2, the end member 16 of the barrel roller 3 is configured to be detachable from the central member 3b. According to such a configuration, the end member 16 that is easily damaged can be removed and replaced, and the lifetime of the barrel roller 3 can be further extended.
[0013]
In claim 2 , a plurality of barrel rollers 3 are attached to the outer peripheral portion of the rotary support 5 rotatably supported by the rotary shaft 4 so as to be rotatable in a direction perpendicular to the rotary shaft 4 of the rotary support 5. The wheel structure 6 is a wheel for omnidirectional travel in which a plurality of wheel structures 6 are arranged in parallel in the axial direction of the rotation shaft 4 of the rotation support 5, and the barrel shape of the outer peripheral portion of the rotation support 5 The outer periphery concealing member 19 that covers the portion where the roller 3 does not exist is detachably provided on the rotary support 5. According to such a configuration, it is possible to prevent the rotating support 5 from colliding with a step or the like by covering the portion where the barrel-shaped roller 3 does not exist in the rotating support 5 with the outer periphery concealing member 19. In addition, the durability of the rotating support 5 can be improved, and the outer periphery concealing member 19 can be replaced, so that the cost of the outer concealing member 19 can be suppressed.
[0015]
The third aspect of the present invention is characterized in that the outer peripheral concealing member 19 has a two-layer structure inside and outside, and the colors of the outer layer material 19a and the inner layer material 19b are different. According to such a configuration, when the outer layer material 19a of the outer periphery concealment member 19 is worn, the inner layer material 19b of a different color appears and the replacement time of the outer periphery concealment member 19 can be known.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below. FIG. 1A is a schematic front view of an omnidirectional traveling wheel, FIG. 1B is a schematic side view of the omnidirectional traveling wheel, and FIG. 1C is a cross-sectional view of a barrel roller. FIG. 3A is a perspective view of the hand cart, and FIG. 3B is a bottom view of the same.
[0017]
The omnidirectional running wheel A of the present invention is used as, for example, a wheel of the handcart 8 and travels freely on the floor plane in all directions, and can be used for a layout car, a wheelchair or the like. Details will be described below.
[0018]
The omnidirectional running wheel A is provided with shafts 9 on the outer peripheral portion of the rotary support 5 that is rotatably supported by the rotary shaft 4 so as to be substantially orthogonal to the rotary shaft 4. A wheel structure 6 is formed by being rotatably supported via a wheel, and a plurality of such wheel structures 6 are arranged side by side in the axial direction of the rotation shaft 4 of the rotation support 5. In FIG. 1B, two sets of the wheel constituent bodies 6 are arranged in parallel, but three or more rows may be arranged. Moreover, the rotation support body 5 of the plurality of wheel constituent bodies 6 may be integrated.
[0019]
The barrel roller 3 is composed of a material having a high rigidity such as steel, aluminum alloy, magnesium alloy or reinforced plastic, or a material having high rigidity such as steel, aluminum alloy, magnesium alloy or reinforced plastic. There is a double structure in which an elastic body 2 is attached around the formed core material 1 (see FIG. 1C). The elastic body 2 uses a rubber such as urethane rubber, butadiene rubber, natural rubber, etc., and has good shock absorption, is easily available, and is inexpensive. As the shape of the core material 1, the pipe-shaped thing shown in FIG.1 (c) and the barrel-shaped thing shown in FIG. 2 can be considered. Thus, if it is a double structure of the core material 1 and the elastic body 2, it will become difficult to damage a target surface, maintaining intensity | strength as a structure.
[0020]
In the case of the omnidirectional running wheel A using the barrel roller 3 in which the barrel-shaped core material 1 is covered with the elastic body 2 in this way, in the column of problems to be solved by the conventional technology and the invention. As described above, the end of the barrel roller 3 is likely to be damaged when overcoming the step, but the present invention intends to solve such a problem. Details will be described below.
[0021]
As shown in FIG. 4, the end member 16 in the length direction of the barrel roller 3 is formed of a material having higher rigidity than the central member 17 in the length direction. Specifically, the end member 16 of the elastic body 2 is prevented from being damaged at the end of the barrel roller 3 by using a reinforced plastic, high-strength urethane, or the like having higher rigidity than the central member 17.
[0022]
Therefore, even if the strength of the end of the barrel roller 3 is increased to collide with a step or protrusion, the end of the barrel roller 3 is not damaged, and the lifetime of the barrel roller 3 can be extended. Product value can be increased.
[0024]
In the present embodiment, as shown in FIG. 5, the end member 16 in the length direction of the barrel roller 3 is formed of a material having higher rigidity than the central member 17 in the length direction, and the end member 16 is detachable from the central member 17. Specifically, for example, an end member 16 having a cylindrical shape with the core material 1 as a convex portion is engaged with both end portions of the barrel roller 3. Various other configurations that can be freely attached and detached can be used.
[0025]
Thus, the end member 16 which is easily damaged can be removed and replaced, and the life of the barrel roller 3 can be further extended.
[0026]
FIG. 6 shows a reference example . However, the basic configuration is the same as that of the above-described embodiment, and the same reference numerals are given to the common parts, and the description is omitted.
[0027]
Oite in FIG. (A), the barrel-shaped rollers 3 and an elastic member 2 covering the outer periphery of the core 1 and the core 1, the strength of the core material 1 to the end of the roller length direction core 1 This is provided with a reinforcing member 18 for increasing the strength.
[0028]
In this reference example , the strength of the end of the barrel roller 3 can be increased by the reinforcing member 18 attached to the end of the core member 1, and the end of the barrel roller 3 collides with the step h or the protrusion. Also, the elastic body 2 that is easily damaged can receive a load on the core 1 together with the reinforcing member 18 without receiving a load, and the end of the barrel roller 3 is not damaged, and the lifetime of the barrel roller 3 is increased. It can be extended and the product value can be increased.
[0029]
In the reference example of FIG. 5B, the core material 1 is formed in a barrel shape, and a reinforcing member 18 is attached to increase the strength of the end portion of the barrel roller 3.
[0030]
In the reference example of FIG. 2C, an annular plate reinforcing member 18 is attached to both ends of the pipe-shaped core material 1 to increase the strength of the end of the barrel roller 3.
[0031]
The reinforcing member 18 in the reference example of FIG. 6 may be integrated with the core material 1 or connected by screwing or the like.
[0032]
FIG. 7 shows still another embodiment. However, the basic configuration of this embodiment is the same as that of the above-described embodiment, and common portions are denoted by the same reference numerals and description thereof is omitted.
[0033]
In the present embodiment, an outer periphery concealing member 19 that covers a portion of the outer peripheral portion of the rotary support 5 where the barrel roller 3 does not exist is detachably provided on the rotary support 5. Specifically, the outer peripheral concealment member 19 made of synthetic resin such as MC nylon or 6-nylon is detachably attached to the rotary support 5 with a screw tool 21.
[0034]
Thus, by covering the portion of the rotating support 5 where the barrel-shaped roller 3 does not exist with the outer periphery concealing member 19, it is possible to prevent the rotating support 5 from colliding with a step or the like. 5 and the outer periphery concealment member 19 can be replaced. Therefore, even when any one of the outer periphery concealment member 19 is worn out or damaged, the entire outer concealment member 19 or the entire wheel is removed. Since it is not necessary to exchange, the cost of the outer periphery concealment member 19 can be suppressed.
[0035]
FIG. 8 shows still another reference example . However, the basic configuration is the same as that of the above embodiment, and the same reference numerals are given to the common parts, and the description will be omitted.
[0036]
In this reference example , the outer peripheral portion of the rotary support 5 is covered with an outer peripheral member 20 having a lower rigidity than the central portion. Specifically, the outer peripheral portion of the metal rotating support 5 is covered with an outer peripheral member 20 made of an elastic material made of rubber or synthetic resin.
[0037]
Thus, the impact when the outer peripheral portion of the rotary support 5 collides with a step or the like can be reduced, and damage to the step or the barrel roller 3 can be prevented.
[0038]
By the way, the outer peripheral portion of the rotary support 5 is formed by a member different from the central portion, and the outer peripheral portion is formed by an elastic material having a lower rigidity than the central portion, for example, coating of resin, rubber or the like. Is also good.
[0039]
FIG. 9 shows still another embodiment. However, the basic configuration of this embodiment is the same as that of the above embodiment, and common portions are denoted by the same reference numerals and description thereof is omitted.
[0040]
In the present embodiment, the outer periphery concealment member 19 is formed in an inner and outer two-layer structure, and the colors of the outer layer material 19a and the inner layer material 19b are different. For example, aluminum is coated as the inner layer material 19b, synthetic resin such as rubber or nylon is coated as the outer layer material 19a, and synthetic resins of different colors such as white nylon are coated as the inner layer material 19b and gray nylon is molded as the outer layer material 19a. Things can be adopted.
[0041]
Accordingly, when the outer layer material 19a of the outer periphery concealment member 19 is worn, an inner layer material 19b of a different color appears, and the replacement time of the outer periphery concealment member 19 can be known.
[0042]
Needless to say, the omnidirectional traveling wheel A of the present invention can be implemented on a free floor that is laid on the floor and moves a load in all directions.
[0043]
【The invention's effect】
In claim 1, a plurality of barrel-shaped rollers are rotatably attached to an outer peripheral portion of a rotating support that is rotatably supported by a rotating shaft in a direction orthogonal to the rotating shaft of the rotating support. A wheel for omnidirectional travel in which a plurality of wheel components are formed side by side in the axial direction of the rotation shaft of the rotation support, and the end member in the length direction of the barrel roller is compared with the center member in the length direction. Since the end member is formed detachably with respect to the central member, the strength of the end of the barrel roller is increased so that the barrel roller can be There is an advantage that the end portion is not damaged, the lifetime of the barrel roller can be extended, and the commercial value can be increased. In addition, there is an advantage that the end member which is easily damaged can be removed and replaced, and the lifetime of the barrel roller can be further extended.
[0046]
According to a second aspect of the present invention, a plurality of barrel rollers are attached to the outer peripheral portion of a rotary support that is rotatably supported by a rotary shaft so as to be rotatable in a direction orthogonal to the rotary shaft of the rotary support. A wheel for omnidirectional travel formed by arranging a plurality of wheel components in parallel in the axial direction of the rotation shaft of the rotation support, and an outer periphery concealing member that covers a portion of the outer periphery of the rotation support that does not have a barrel-shaped roller Since the rotary support is provided in a detachable manner, the portion where the barrel-shaped roller does not exist in the rotary support is covered with an outer peripheral concealing member, thereby preventing the rotary support from colliding with a step or the like. In addition, the durability of the rotary support can be improved, and the outer peripheral concealment member can be exchanged, so that the cost of the outer peripheral concealment member can be reduced.
[0048]
In claim 3, in addition to the second aspect, it constitutes the outer peripheral hidden member into and out of the two-layer structure, because are made different colors the outer layer material and the inner layer material, in addition to the effect of claim 2 Thus, when the outer layer material of the outer periphery hidden member is worn, an inner layer material of a different color appears and it is possible to know the replacement time of the outer surface hidden member.
[0049]
In claim 4, in addition to the configuration according to claim 1 or 2, applying to the hand cart, in addition to the effect of claim 1 or 2, it can be moved in all directions, durable, In addition, there is an advantage that it is possible to obtain a wheelbarrow that does not cost.
[Brief description of the drawings]
FIG. 1 shows an embodiment of the present invention, in which (a) is a schematic front view of an omnidirectional running wheel, (b) is a schematic side view, and (c) is a cross-sectional view of a reference example of a barrel roller. is there.
FIG. 2 is a cross-sectional view of a barrel roller according to the reference example .
FIG. 3A is a perspective view of the same hand cart, and FIG. 3B is a schematic bottom view of the same.
FIG. 4 is an explanatory diagram of the barrel roller of the above.
FIGS. 5A and 5B are explanatory views of the above. FIG.
FIGS. 6A and 6B show another reference example, and FIGS. 6A and 6B are cross-sectional views of barrel rollers. FIGS.
7A and 7B show still another embodiment, in which FIG. 7A is a schematic exploded front view, and FIG. 7B is a schematic side view.
FIG. 8 shows still another reference example , wherein (a) is a schematic front view and (b) is a schematic side view.
FIG. 9 is a cross-sectional view of an outer periphery concealing member showing still another embodiment of the same.
FIG. 10 shows a conventional example, (a) is a front view, and (b) is a side view.
FIG. 11 is a perspective view showing another conventional example.
FIG. 12 shows another conventional example, and (a) and (b) are schematic cross-sectional views.
FIG. 13 is a cross-sectional view of a conventional example.
14A is a top view of a conventional example, and FIG. 14B is a perspective view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 3 Barrel-shaped roller 4 Rotating shaft 5 Rotating support body 6 Wheel structure 16 End member 17 Central member

Claims (4)

回転軸にて回転自在に支持した回転支持体の外周部に樽形ローラの複数を回転支持体の回転軸に対して直交する方向に回転自在に取付けて車輪構成体を形成し、複数の車輪構成体を回転支持体の回転軸の軸方向に並設した全方向走行用車輪であって、樽形ローラの長さ方向の端部材が長さ方向の中央部材に比べて剛性の高い材料にて形成するとともに端部材を中央部材に対して着脱自在に形成して成ることを特徴とする全方向走行用車輪。A plurality of barrel rollers are attached to the outer periphery of a rotating support rotatably supported by a rotating shaft so as to be rotatable in a direction orthogonal to the rotating shaft of the rotating support to form a wheel structure. An omnidirectional running wheel in which the structural body is arranged side by side in the axial direction of the rotary shaft of the rotary support, and the end member in the longitudinal direction of the barrel roller is made of a material having higher rigidity than the central member in the longitudinal direction. An omnidirectional running wheel characterized in that the end member is detachably formed with respect to the central member . 回転軸にて回転自在に支持した回転支持体の外周部に樽形ローラの複数を回転支持体の回転軸に対して直交する方向に回転自在に取付けて車輪構成体を形成し、複数の車輪構成体を回転支持体の回転軸の軸方向に並設した全方向走行用車輪であって、回転支持体の外周部の樽形ローラが存在しない部分を覆う外周隠し部材を回転支持体に着脱自在に設けて成ることを特徴とする全方向走行用車輪。 A plurality of barrel rollers are attached to the outer periphery of a rotating support rotatably supported by a rotating shaft so as to be rotatable in a direction orthogonal to the rotating shaft of the rotating support to form a wheel structure. An omnidirectional running wheel in which the components are arranged side by side in the axial direction of the rotary shaft of the rotary support, and an outer peripheral concealment member that covers a portion of the outer peripheral portion of the rotary support that does not have a barrel-shaped roller is attached to and detached from the rotary support An omnidirectional running wheel characterized by being provided freely . 外周隠し部材を内外の二層構造に構成し、外層材と内層材との色を異ならせて成ることを特徴とする請求項2記載の全方向走行用車輪。3. The omnidirectional traveling wheel according to claim 2, wherein the outer periphery concealing member is formed in an inner and outer two-layer structure, and the outer layer material and the inner layer material are different in color . 手押し台車に適用することを特徴とする請求項1又は2記載の全方向走行用車輪。The omnidirectional traveling wheel according to claim 1, which is applied to a hand cart.
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