JP2004142608A

JP2004142608A - Caster with self-dropping restraint fixture and travelling utensil with this caster

Info

Publication number: JP2004142608A
Application number: JP2002309923A
Authority: JP
Inventors: Mutsuyuki Ogura; 小倉　睦行
Original assignee: KONO KEIEI KENKYUSHO KK; LINK CIRCUIT KK; MODERN PLAST KOGYO KK; WAKO SEISAKUSHO KK; YES CO Ltd; YES KK; Wako Seisakusho KK
Current assignee: KONO KEIEI KENKYUSHO KK; LINK CIRCUIT KK; MODERN PLAST KOGYO KK; WAKO SEISAKUSHO KK; YES CO Ltd; YES KK; Wako Seisakusho KK
Priority date: 2002-10-24
Filing date: 2002-10-24
Publication date: 2004-05-20

Abstract

<P>PROBLEM TO BE SOLVED: To provide a caster having a self-dropping restraint fixture which is changed from a fixed state to a bent state so as to be storable without using a complicated restraint fixture, and also to provide a traveling utensil which is of a simple and compact design using the caster. <P>SOLUTION: This caster 1 consists of a rotating wheel support part 2, a mounting and retaining part 3 pin-connected with the rotating wheel support part, and a grip 4 which fixes or releases the support part and the retaining part. The grip 4 is dropped with the self-weight to fix the rotating wheel support part 2 with the mounting and retaining part 3. Both of them are kept in a free state by applying vibration to the restraint fixture 4. The traveling utensil using this caster 1 is of a foldable structure. The caster 1 is kept in a bent state so as to release restraint for housing and to be superposed into an integral box form, thus being housed in a bag or the like to make it portable. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、キャスタと該キャスタを脚部とする移動用具に係り、特に、キャスタが拘束具の自重移動により屈曲自在及び拘束固定された状態になり、極めて簡便構造で取扱性の向上も図れる自重落下式拘束具を有するキャスタ及びそのキャスタ付き移動用具に関する。
【０００２】
【従来の技術】
回転輪を有するキャスタには各種のものがあり、固定式のものに限らず回転輪と取付部とが屈曲自在の連結構造でまとめられている形式のものも多い。然し乍ら、キャスタはその使用時においては回転輪の部分と取付部とが固定構造になることが必要のため、前記のように屈曲自在の連結構造のものは別体の拘束具を必要とする。逆に回転輪の部分を屈曲させて収納する場合には前記拘束具の拘束を手動等により解除する必要があり取扱いが面倒であり、全体構造も複雑のものになりコスト高となる問題点がある。
【０００３】
【発明が解決しようとする課題】
回転輪の部分と取付部とが屈曲自在に連結されることは不使用におけるキャスタの収納を容易にするために必要であるが、このために前記したような拘束具の手動による解除作業が必要になる。然し乍ら、この作業はない方が望ましい。一方、従来のキャスタ付きの移動用具１００ａは図１０に示すように固定式のものからなる。即ち、積載物を搭載するための床板３１と、この一側端に立上り形成される背板部３２と把持具３３等が夫々固定式に連結されるものからなり、キャスタ３４も固定式で床板３１の下面に取付けられている構造のものからなる。従って、全体としてかなり小型のものであっても不使用時の収納空間としてはかなり大きなスペースが必要になり、到底手持ちのバッグ等に収納することは不可能である。一方、キャスタを有する移動用具は少し重い物品を運搬する場合に便利であり、仮りに常時手持ちのバッグ等に収納して持ち運び自在のものであれば重い物品を手持ちする必要がなく極めて便利である。
【０００４】
本発明は、以上の要請に鑑みて発明されたものであり、キャスタが屈曲自在のものからなり、かつ手動による拘束具の解除等が全く不用であり、かつ全体として折り畳み可能でコンパクトにまとめられ、不使用時においては手持ちのバッグ等に収納して持ち運びできるキャスタ付き移動用具を提供することを目的とする。
【０００５】
【課題を解決するための手段】
本発明は、以上の目的を達成するために、請求項１の自重落下式拘束具を有するキャスタは、一端側で回転輪を枢支し他端側に軸部を形成すると共に軸部の基端に拡径された座面を形成する回転輪支持部と、前記軸部にピン連結されその一端部を前記座面に寸法ａだけ近接する位置に配置し他端部に拡径された取付け座面を前記軸部の先端から離れた位置に形成する取付け保持部と、該取付け保持部の外周に摺動自在に装着され前記座面と取付け座面との間を移動するリング状の拘束具とを備え、前記拘束具の厚みｔが少なくとも前記寸法ａよりも厚く形成され、かつ前記軸部の先端と前記取付け座面の裏面間の寸法ｂが前記拘束具の厚みｔよりも大寸に形成されることを特徴とする。以上の構造により、拘束具を座面に当接する位置に移動すると回転輪支持部と取付け保持部とが回動できない拘束状態となり、回転輪は固定状態となる。一方、拘束具に振動を与え、取付け座面に当接する位置にまで移動することにより回転輪支持部は屈曲自在となり、収納し易い形態となる。
【０００６】
本発明の請求項２の自重落下式拘束具を有するキャスタは、前記拘束具が前記取付け保持部の外周に沿って自重で落下可能な重みを有することを特徴とする。拘束具は自重で移動し得る重みを有するものからなるため、請求項１に示す拘束具の移動は特別の手動動作を要することなくキャスタ自体を垂直状態にしたり、上下又は左右にキャスタを振って拘束具に振動を与えればよい。
【０００７】
また、本発明の請求項３の自重落下式拘束具を有するキャスタ付き移動用具は、前記請求項１又は２に記載の自重落下式拘束具を有するキャスタを下面の脚部として備える移動用具であって、該移動用具は、その表面上に積載物を搭載する平板面を形成すると共にその裏面に前記キャスタを固定し裏面側に前記キャスタの回転輪の露出可能な開口部を有する枠体状床板部と、該枠体状床板部の一側端に回動自在に連結され、前記開口部を閉止する位置から前記枠体状床板部の表面の一側端から上方に立上り前記積載物の側面側を保持し得る位置まで回動する背板部と、該背板部内に出入自在に保持され引出し位置及び収納位置に保持される把持具とを設けることを特徴とする。以上の構造により使用時には枠体状床板部と背板部とを積載物を搭載及び保持する形態にし、把持具を背板部から引出して保持することにより移動用具は組み上げられ、積載物の運搬が可能になる。
【０００８】
また、本発明の請求項４の自重落下式拘束具を有するキャスタ付き移動用具は、前記移動用具は、不使用時において前記枠体状床板部と背板部とが重合し、かつ前記把持具が前記背板部内に収納されて全体として箱体状の形態にまとめられるものからなることを特徴とする。以上のように、不使用時には枠体状床板部と背板部を重合させ背板部に把持具を収納することにより箱体状にコンパクトにまとめられ、小型のものの場合にはバッグ等に収納でき、持ち運びすることができる。
【０００９】
【発明の実施の形態】
以下、本発明の自重落下式拘束具を有するキャスタ及びそのキャスタ付き移動用具の実施の形態を図面を参照して詳述する。図１乃至図５は本発明のキャスタの構造及び使用方法を説明する図であり、図６乃至図８はそのキャスタを用いた移動用具の使用時における形態を示す図であり、図９は移動用具の不使用時の収納状態を示す図である。まず、図１乃至図３により本発明のキャスタの構造を説明する。
【００１０】
図１及び図２に示すように、本発明の自重落下式拘束具を有するキャスタ１（以下、キャスタ１と言う）は大別して回転輪支持部２と、取付け保持部３及び拘束具４等とから構成される。
【００１１】
回転輪支持部２は、回転輪５と、これを一端側で枢支する略Ｌ字形状のブロック６と、このブロック６の他端側に挿着される軸体部７とからなる。なお、軸体部７は、ブロック６に挿着されて抜け止めされるシャフト部８と、座面９と、座面９を基端としてこれから突出する軸部１０とからなる。なお、本実施の形態では軸部１０は図３に示すように円筒の外面を切断し相対向する二面１０ａ，１０ａを形成したものからなる。
【００１２】
一方、取付け保持部３は、回転輪支持部２の軸部１０にピン１１によりピン連結される部材からなり、詳しくは、軸部１０に嵌り込む嵌め込み円筒軸１２と、この他端部に形成される拡径状の取付け座面１４とからなる。なお、嵌め込み円筒軸１２は図１及び図３に示すように円筒の中心部にすり割り１３を入れたものからなり、このすり割り１３の部分で軸部１０の平面１０ａ，１０ａに嵌り込む形状のものからなる。また、取付け保持部３はピン１１で回転輪支持部２に連結された状態で嵌め込み円筒軸１２の一端部（図１の下端部）は回転輪支持部２の座面９の上面から寸法ａだけ離れた位置にあり、取付け座面１４の裏面（図１における取付け座面１４の下面）は軸部１０の先端（図１の上面）から寸法ｂだけ離れた位置に配置される形状からなる。
【００１３】
拘束具４は図１，図２に示すように、リング状部材からなり、取付け保持部３の嵌め込み円筒軸１２の外周に挿着され、この軸線方向に沿って摺動自在のものからなる。その厚みｔは図１に示すように嵌め込み円筒軸１２の下端と座面９の上面との間の寸法ａよりも厚く、軸部１０の上端と取付け座面１４の下面との間の寸法ｂよりも薄い寸法のものからなる。また、この拘束具４はキャスタ１を図１，図２に示すように垂直状態にした場合に自重で落下し、座面９に当接し得る重さのものからなり、また、キャスタ１を略横（水平）にして振った場合に座面９から離れて取付け座面１４に当接し得る位置まで簡便に移動できる重さ及び形状のものからなる。
【００１４】
次に、図４，図５によりキャスタ１の拘束及び拘束解除の形態について説明する。図４はキャスタ１が拘束された状態を示す。即ち、キャスタ１は使用時には図４に示す状態になる。キャスタ１を垂直状態にすると、前記したように拘束具４が回転輪支持部２の座面９に当接する位置に自重により下る。拘束具４の厚みｔは前記のように寸法ａよりも大きいため、図４に示すように軸部１０にピン１１で連結されている取付け保持部３の嵌め込み円筒軸１２はピン結合されていても不動の状態となる。よって、この状態では回転輪支持部２と取付け保持部３とは一体的構造となる。このため、取付け座面１４を図略の移動用具に固定するとこの移動用具のキャスタとしてキャスタ１は機能することになる。
【００１５】
一方、例えば、キャスタ１を図４の状態から略水平方向にしながらこれに振動を与えると拘束具４は嵌め込み円筒軸１２の外周に沿って移動し、取付け座面１４に当接する位置まで移動することができる。これにより、嵌め込み円筒軸１２の軸部１０への拘束が解除され、取付け保持部３は図５に示すようにピン１１を中心に回動することができ、取付け支持部３と回転輪支持部２とは直交する状態になる。即ち、取付け保持部３を垂直状態にした場合には回転輪支持部２を水平状態にすることができる。従って、キャスタ１の不使用時には図５の状態にキャスタ１を位置付けることができる。
【００１６】
次に、以上の構造のキャスタ１を用いた移動用具について説明する。移動用具としては各種形態のものがあるが、１つの実施の形態を図６等に示す。この移動用具１００は、大別して、枠体状床板部１６と、背板部１７と、把持具１８等とからなり、前記のキャスタ１は枠体状床板部１６の下面側に取付けられる。なお、図７に示すように本実施の形態の移動用具１００ではキャスタ１は３個使用され図の位置に配置されるが、勿論これに限定するものではない。また、図６に示すようにキャスタ１は内側の２つと外側の１つは垂直状態における全長が相異し、外側のキャスタ１が長寸に形成される。これは図８に示すように移動用具１００を人１９が使用する場合、地面１５に対して移動用具１００が人１９の側に少し傾斜させその移動の円滑化を図るためである。
【００１７】
枠体状床板部１６は図６，図７に示すように表面上に積載物（図略）を搭載するための平板面２０を形成し、下面側に開口部２１を形成する枠体からなり、例えば、平板面２０の大きさはＡ５サイズの小型のものからなる。この平板面２０の裏面にはキャスタ１が固定される。即ち、キャスタ１の取付け座面１４が固定される。
【００１８】
背板部１７はヒンジ２２等により枠体状床板部１６の一側面に回動自在に連結される枠体状の部材からなり、枠体状床板部１６の横寸法と略等しい幅寸法で適宜の高さ寸法のものからなる。また、背板部１７の両端側には図６に示すように、把持具１８の挿入される挿入穴２３が形成される。この挿入穴２３は行き止り穴からなり、その入口部には弾性部材２４が着脱可能に挿着されている。勿論、この弾性部材２４はなくてもよいが、把持具１８の安定保持のためにはあった方が好ましい。
【００１９】
把持具１８は図６に示すように、本実施の形態では挿入穴２３に挿入可能なガイド座面２５を下端に形成し、このガイド座面２５から立ち上がるテーパ軸２６と、テーパ軸２６の上端に固定される把手２７等とからなる。なお、テーパ軸２６は上方に向かって縮径されたテーパの形状からなり、ガイド座面２５に近い位置におけるテーパ軸２６の外径は弾性部材２４の内径よりも大寸法のものからなる。また、テーパ軸２６の把手２７に連結する位置には弾性部材２４に軽く嵌挿し得る弾性部材２８が設けられている。これは把持具１８の収納時における安定保持のためであり、あった方が好ましい。
【００２０】
図６，図８は本実施の形態の移動用具１００の使用時の状態を示すものである。図示のように、枠体状床板部１６にはキャスタ１が垂直状態で取付けられ、背板部１７は上方側に回動し、立ち上がった状態に保持される。また、把持具１８は背板部１７の挿入穴２３から引出され、そのテーパ軸２６の下端側又はガイド座面２５は弾性部材２４に固持又は当接した状態に保持される。以上により、図８に示すように、人１９は移動用具１００の枠体状床板部１６上に積載物２９を搭載し、把持具１８を握って地面１５に沿って移動用具１００を円滑に移動させることができる。また、積載物２９は背板部１７によりその側面側を安定保持される。
【００２１】
図９は移動用具１００の不使用時の状態を示す。まず、把持具１８を挿入穴２３内に押し込み弾性部材２８を弾性部材２４に嵌着し保持される。次に、移動用具１００の全体を垂直状態から略水平状態にしながら振動を与えると前記のようにキャスタ１の拘束具１４が拘束解除され、キャスタ１は図５や図９に示すように水平状態になる。従って、背板部１７を回動することにより枠体状床板部１６の開口部２１が背板部１７に閉止可能となり、枠体状床板部１６と背板部１７とは図９に示すように重合し一体形状の箱体となる。なおロック金具３０によりこの重合状態を保持するようにしてもよい。以上により、移動用具１００はサイズＡ５の箱体となり、手持ちのバッグ等に収納することができる。また、使用時にはバッグ等から随時取り出せばよい。
【００２２】
【発明の効果】
１）本発明の請求項１の自重落下式拘束具を有するキャスタによれば、キャスタを略垂直状態にすることにより拘束具を座面に当接する位置に移動でき、キャスタを簡単に固定状態にすることができる。また、拘束具に振動を与えることにより拘束具による拘束が解除され、キャスタを収納可能の水平状態にすることが簡単にできる。即ち、特別の固定具やこの解除動作をすることなく、キャスタの固定及び解放ができる。
２）本発明の請求項２の自重落下式拘束具を有するキャスタによれば、拘束具は自重により移動可能のものからなり、キャスタの固定及びその解除が極めて容易にできる。
３）本発明の請求項３の自重落下式拘束具を有するキャスタ付き移動用具によれば、特別の面倒な作業をすることなく、移動用具が組み上げられ、積載物を円滑に移動することができる。
４）本発明の請求項４の自重落下式拘束具を有するキャスタ付き移動用具によれば、不使用時にはコンパクトな箱体状のものに収納でき、かつ小型のためバッグ等に収納して運搬することができる。よって、使用時にはバッグ等から取り出して組み上げればよく、極めて便利である。
【図面の簡単な説明】
【図１】本発明の自重落下式拘束具を有するキャスタの全体構造を示す側面図。
【図２】図１の正面図。
【図３】図２のＡ−Ａ線拡大断面図。
【図４】本発明のキャスタの使用時の状態を示す正面図。
【図５】本発明のキャスタの収納時の状態を示す正面図。
【図６】本発明のキャスタを用いた移動用具の全体構造を示す断面図。
【図７】図６の上面図。
【図８】図６，図７に示す移動用具の使用形態を示す模式図。
【図９】本発明の移動用具の不使用時の収納状態を示す斜視図。
【図１０】従来の一般的な移動用具を示す模式的斜視図。
【符号の説明】
１　　　自重落下式拘束具を有するキャスタ（キャスタ）
２　　　回転輪支持部
３　　　取付け保持部
４　　　拘束具
５　　　回転輪
６　　　ブロック
７　　　軸体部
８　　　シャフト部
９　　　座面
１０　　軸部
１０ａ　平面
１１　　ピン
１２　　嵌め込み円筒軸
１３　　すり割り
１４　　取付け座面
１５　　地面
１６　　枠体状床板部
１７　　背板部
１８　　把持具
１９　　人
２０　　平板面
２１　　開口部
２２　　ヒンジ
２３　　挿入穴
２４　　弾性部材
２５　　ガイド座面
２６　　テーパ軸
２７　　把手
２８　　弾性部材
２９　　積載物
３０　　ロック金具
１００　移動用具[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a caster and a moving tool having the caster as a leg, and more particularly to a caster in which the caster is flexibly and restrained and fixed by the movement of the restraint by its own weight, and has an extremely simple structure and can improve handleability. The present invention relates to a caster having a drop-type restraint and a moving tool with the caster.
[0002]
[Prior art]
There are various types of casters having rotating wheels, and not only fixed casters, but also many types in which the rotating wheels and the mounting portion are combined in a flexible connection structure. However, when the caster is used, it is necessary that the rotating wheel portion and the mounting portion have a fixed structure. Therefore, the above-mentioned flexible connection structure requires a separate restraining device. Conversely, when the rotating wheel portion is bent and stored, it is necessary to release the restraint of the restraining device manually or the like, which is troublesome to handle, and the overall structure becomes complicated and the cost increases. is there.
[0003]
[Problems to be solved by the invention]
It is necessary that the rotating wheel portion and the mounting portion are flexibly connected to each other in order to facilitate the storage of the caster when not in use. For this reason, the manual release operation of the restraint as described above is necessary. become. However, it is desirable not to do this work. On the other hand, the conventional moving tool 100a with casters is of a fixed type as shown in FIG. That is, a floor plate 31 for mounting a load, a back plate portion 32 formed on one side end thereof, a gripper 33, and the like are fixedly connected to each other. 31 is attached to the lower surface. Therefore, even if it is quite small as a whole, a considerably large space is required as a storage space when not in use, and it is impossible to store it in a hand-held bag or the like. On the other hand, a moving tool having a caster is convenient for transporting a slightly heavy article, and if it is always stored in a hand-held bag or the like and is portable, it is not necessary to carry a heavy article and it is extremely convenient. .
[0004]
The present invention has been devised in view of the above demands, and the caster is made of a bendable one, and it is completely unnecessary to manually release the restraint, etc., and it is foldable and compact as a whole. Another object of the present invention is to provide a moving tool with casters that can be carried and stored in a bag or the like when not in use.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a caster having a self-weight drop-type restraint device according to claim 1 which pivotally supports a rotating wheel at one end side and forms a shaft portion at the other end side and forms a base for the shaft portion. A rotating wheel support portion forming a seat surface with an enlarged diameter at one end, and a pin connected to the shaft portion, one end of which is arranged at a position close to the seat surface by a dimension a, and a diameter of which is enlarged at the other end portion; A mounting portion for forming a seat surface at a position away from the tip of the shaft portion; and a ring-shaped constraint slidably mounted on the outer periphery of the mounting portion and moving between the seat surface and the mounting seat surface. A thickness t of the restraint is formed to be thicker than at least the dimension a, and a dimension b between the tip of the shaft portion and the back surface of the mounting seat surface is larger than the thickness t of the restraint. It is characterized by being formed in. With the above structure, when the restraint is moved to a position where it comes into contact with the seat surface, the rotating wheel support portion and the mounting and holding portion are in a restrained state in which they cannot rotate, and the rotating wheel is in a fixed state. On the other hand, by applying vibration to the restraint and moving it to a position where it comes into contact with the mounting seat surface, the rotating wheel support portion becomes freely bendable and is easily housed.
[0006]
A caster having a self-weight drop restraint according to claim 2 of the present invention is characterized in that the restraint has a weight that allows the restraint to drop by its own weight along the outer periphery of the mounting and holding portion. Since the restraint has a weight capable of moving by its own weight, the movement of the restraint according to claim 1 is performed by vertically moving the caster itself or swinging the caster up and down or left and right without requiring a special manual operation. What is necessary is just to give a vibration to a restraint.
[0007]
According to a third aspect of the present invention, there is provided a moving tool with a caster having a weight drop type restraint device according to claim 1 or 2, wherein the caster having the weight drop type restraint device according to claim 1 or 2 is provided as a lower leg portion. The moving tool has a frame-like floor plate having a flat surface on which a load is mounted on a surface thereof, a caster fixed to a rear surface thereof, and an opening capable of exposing a rotating wheel of the caster on a rear surface side. Part, and one side end of the frame-shaped floor plate portion is rotatably connected to the side surface of the load, and rises upward from one side end of the surface of the frame-shaped floor plate portion from a position at which the opening is closed. A back plate that rotates to a position where the side can be held, and a gripper that is held in the back plate so as to be able to move in and out and that is held in a drawer position and a storage position are provided. With the above structure, the frame-shaped floor panel and the back panel are configured to load and hold the load when used, and the moving tool is assembled by pulling out and holding the gripper from the back panel to transport the load. Becomes possible.
[0008]
Further, in the moving tool with casters having the weight drop type restraining device according to claim 4 of the present invention, the moving tool is configured such that the frame-shaped floor plate portion and the back plate portion overlap when not in use, and the gripping device is used. Are housed in the back plate portion and are put together in a box-like form as a whole. As described above, when not in use, the frame-shaped floorboard and backboard are superimposed and the gripper is housed in the backboard to be compactly packed in a box shape. Can be carried around.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a caster having a self-weight drop-type restraint device of the present invention and a moving tool with the caster will be described in detail with reference to the drawings. FIGS. 1 to 5 are views for explaining the structure and method of use of the caster of the present invention. FIGS. 6 to 8 are views showing a form in which a moving tool using the caster is used, and FIG. It is a figure which shows the storage state at the time of non-use of a tool. First, the structure of the caster of the present invention will be described with reference to FIGS.
[0010]
As shown in FIGS. 1 and 2, a caster 1 (hereinafter, referred to as a caster 1) having a self-weight drop type restraint according to the present invention is roughly divided into a rotating wheel support portion 2, a mounting and holding portion 3, a restraint 4 and the like. Consists of
[0011]
The rotating wheel support 2 includes a rotating wheel 5, a substantially L-shaped block 6 that pivotally supports the rotating wheel 5 at one end thereof, and a shaft body 7 inserted at the other end of the block 6. The shaft portion 7 includes a shaft portion 8 that is inserted into the block 6 and is prevented from falling off, a seat surface 9, and a shaft portion 10 that projects from the seat surface 9 as a base end. In this embodiment, the shaft portion 10 is formed by cutting the outer surface of a cylinder to form two opposing surfaces 10a, 10a as shown in FIG.
[0012]
On the other hand, the mounting and holding portion 3 is made of a member that is pin-connected to the shaft portion 10 of the rotating wheel support portion 2 by a pin 11, and more specifically, a fitting cylindrical shaft 12 that fits into the shaft portion 10, and formed at the other end thereof. And a mounting seat surface 14 having an enlarged diameter. As shown in FIGS. 1 and 3, the fitting cylindrical shaft 12 is formed by inserting a slit 13 in the center of the cylinder, and the shape of the slit 13 fitting into the flat surfaces 10a, 10a of the shaft portion 10. Consisting of The mounting holder 3 is connected to the rotating wheel support 2 with the pin 11 and fitted. One end (the lower end in FIG. 1) of the cylindrical shaft 12 has a dimension a from the upper surface of the seating surface 9 of the rotating wheel support 2. And the back surface of the mounting seat surface 14 (the lower surface of the mounting seat surface 14 in FIG. 1) has a shape arranged at a position separated by a distance b from the tip of the shaft portion 10 (the upper surface in FIG. 1). .
[0013]
As shown in FIGS. 1 and 2, the restraint 4 is formed of a ring-shaped member, is inserted into the outer periphery of the cylindrical shaft 12 in which the mounting and holding portion 3 is fitted, and is slidable along the axial direction. As shown in FIG. 1, the thickness t is larger than a dimension a between the lower end of the fitted cylindrical shaft 12 and the upper surface of the seating surface 9, and a dimension b between the upper end of the shaft portion 10 and the lower surface of the mounting seating surface 14. Of smaller dimensions. When the caster 1 is in the vertical state as shown in FIGS. 1 and 2, the restraint 4 falls under its own weight and can be brought into contact with the seating surface 9. When it is shaken horizontally (horizontally), it is of a weight and shape that can be easily moved away from the seating surface 9 to a position where it can come into contact with the mounting seating surface 14.
[0014]
Next, referring to FIGS. 4 and 5, a mode of restraining and releasing the restraint of the caster 1 will be described. FIG. 4 shows a state in which the caster 1 is restrained. That is, the caster 1 is in the state shown in FIG. 4 during use. When the caster 1 is in the vertical state, the restraint 4 is lowered by its own weight to the position where it comes into contact with the bearing surface 9 of the rotating wheel support 2 as described above. Since the thickness t of the restraint 4 is larger than the dimension a as described above, the cylindrical shaft 12 of the mounting and holding portion 3 which is connected to the shaft portion 10 by the pin 11 as shown in FIG. Is also immobile. Therefore, in this state, the rotating wheel support portion 2 and the attachment holding portion 3 have an integral structure. Therefore, when the mounting seat surface 14 is fixed to a moving tool (not shown), the caster 1 functions as a caster for the moving tool.
[0015]
On the other hand, for example, when the caster 1 is vibrated while the caster 1 is moved from the state shown in FIG. 4 in a substantially horizontal direction, the restraint 4 moves along the outer periphery of the fitted cylindrical shaft 12 and moves to a position where it comes into contact with the mounting seat surface 14. be able to. Thereby, the constraint of the fitted cylindrical shaft 12 on the shaft portion 10 is released, and the mounting and holding portion 3 can rotate about the pin 11 as shown in FIG. 2 is in a state of being orthogonal. That is, when the mounting and holding section 3 is in the vertical state, the rotating wheel support section 2 can be in the horizontal state. Therefore, when the caster 1 is not used, the caster 1 can be positioned in the state shown in FIG.
[0016]
Next, a moving tool using the caster 1 having the above structure will be described. Although there are various types of moving tools, one embodiment is shown in FIG. 6 and the like. The moving tool 100 is roughly composed of a frame-shaped floor plate portion 16, a back plate portion 17, a gripper 18, and the like. The casters 1 are attached to the lower surface side of the frame-shaped floor plate portion 16. In addition, as shown in FIG. 7, in the moving tool 100 of the present embodiment, three casters 1 are used and arranged at the positions shown in the drawing, but the present invention is not limited to this. Also, as shown in FIG. 6, the inner two casters 1 and the outer one have different overall lengths in a vertical state, and the outer casters 1 are formed to be long. This is because, when the person 19 uses the moving tool 100 as shown in FIG. 8, the moving tool 100 is slightly inclined toward the person 19 with respect to the ground 15 to facilitate the movement.
[0017]
As shown in FIGS. 6 and 7, the frame-shaped floor plate 16 is formed of a frame having a flat surface 20 for mounting a load (not shown) on the surface thereof and an opening 21 formed on the lower surface. For example, the size of the flat plate surface 20 is a small one of A5 size. The caster 1 is fixed to the rear surface of the flat surface 20. That is, the mounting seat surface 14 of the caster 1 is fixed.
[0018]
The back plate portion 17 is made of a frame-shaped member rotatably connected to one side surface of the frame-shaped floor plate portion 16 by a hinge 22 or the like, and has a width substantially equal to the lateral size of the frame-shaped floor plate portion 16 as appropriate. Of height dimensions. As shown in FIG. 6, insertion holes 23 into which the grippers 18 are inserted are formed at both ends of the back plate portion 17. The insertion hole 23 is formed as a dead end hole, and an elastic member 24 is removably inserted into an entrance portion thereof. Of course, the elastic member 24 may not be provided, but it is preferable that the elastic member 24 be provided for stable holding of the gripper 18.
[0019]
As shown in FIG. 6, in the present embodiment, the gripper 18 has a guide seat surface 25 which can be inserted into the insertion hole 23 at the lower end, and a taper shaft 26 rising from the guide seat surface 25 and an upper end of the taper shaft 26. And a handle 27 etc. fixed to the The tapered shaft 26 has a tapered shape whose diameter is reduced upward, and the outer diameter of the tapered shaft 26 at a position near the guide seat surface 25 is larger than the inner diameter of the elastic member 24. An elastic member 28 that can be lightly inserted into the elastic member 24 is provided at a position where the taper shaft 26 is connected to the handle 27. This is for stable holding when the gripping tool 18 is stored, and it is preferable that it is provided.
[0020]
FIGS. 6 and 8 show a state in which the moving tool 100 according to the present embodiment is used. As shown in the drawing, the casters 1 are attached to the frame-shaped floor plate 16 in a vertical state, and the back plate 17 is rotated upward and held in a standing state. Further, the gripper 18 is pulled out from the insertion hole 23 of the back plate portion 17, and the lower end side of the tapered shaft 26 or the guide seating surface 25 is held in a state of being fixed or abutting on the elastic member 24. Thus, as shown in FIG. 8, the person 19 mounts the load 29 on the frame-shaped floor plate 16 of the moving tool 100, grips the gripping tool 18, and smoothly moves the moving tool 100 along the ground 15. Can be done. The load 29 is stably held on the side surface by the back plate 17.
[0021]
FIG. 9 shows a state where the moving tool 100 is not used. First, the gripper 18 is pushed into the insertion hole 23, and the elastic member 28 is fitted and held on the elastic member 24. Next, when vibration is applied while the entire moving tool 100 is changed from the vertical state to the substantially horizontal state, the restraint 14 of the caster 1 is released as described above, and the caster 1 is moved to the horizontal state as shown in FIG. 5 or FIG. become. Therefore, the opening 21 of the frame-shaped floor plate 16 can be closed to the back plate 17 by rotating the back plate 17, and the frame-shaped floor plate 16 and the back plate 17 are connected as shown in FIG. Into a one-piece box. The overlapping state may be maintained by the lock fitting 30. As described above, the moving tool 100 becomes a box of size A5, and can be stored in a hand-held bag or the like. In use, it may be taken out of the bag or the like at any time.
[0022]
【The invention's effect】
1) According to the caster having the self-weight drop-type restraint according to claim 1 of the present invention, the restraint can be moved to a position where it comes into contact with the seat surface by setting the caster to a substantially vertical state, so that the caster can be easily fixed. can do. In addition, by applying vibration to the restraint, the restraint by the restraint is released, and the caster can be easily brought into a stowable horizontal state. That is, the caster can be fixed and released without performing any special fixing tool or releasing operation.
2) According to the caster having the self-weight drop-type restraint device of claim 2 of the present invention, the restraint device can be moved by its own weight, so that the caster can be fixed and released very easily.
3) According to the third aspect of the present invention, the moving tool with casters having the self-weight drop-type restraining device can assemble the moving tool without any special troublesome work, and can smoothly move the load. .
4) According to the fourth aspect of the present invention, the moving tool with casters having the self-weight drop-type restraining device can be stored in a compact box when not in use, and is stored in a bag or the like because of its small size and transported. be able to. Therefore, at the time of use, it may be taken out of the bag or the like and assembled, which is extremely convenient.
[Brief description of the drawings]
FIG. 1 is a side view showing the entire structure of a caster having a self-weight dropping restraint according to the present invention.
FIG. 2 is a front view of FIG. 1;
FIG. 3 is an enlarged sectional view taken along line AA of FIG. 2;
FIG. 4 is a front view showing a state when the caster of the present invention is used.
FIG. 5 is a front view showing a state where the casters of the present invention are stored.
FIG. 6 is a cross-sectional view showing the entire structure of a moving tool using the casters of the present invention.
FIG. 7 is a top view of FIG. 6;
FIG. 8 is a schematic view showing a use form of the moving tool shown in FIGS. 6 and 7.
FIG. 9 is a perspective view showing a stored state of the moving tool of the present invention when not in use.
FIG. 10 is a schematic perspective view showing a conventional general moving tool.
[Explanation of symbols]
1 Casters (casters) with dead weight-type restraints
2 Rotating Wheel Support 3 Mounting Holder 4 Restrictor 5 Rotating Wheel 6 Block 7 Shaft 8 Shaft 9 Seat 10 Shaft 10a Flat 11 Pin 12 Fitted Cylindrical Shaft 13 Slot 14 Mounting Seat 15 Ground 16 Frame Floor plate part 17 back plate part 18 gripper 19 person 20 plate surface 21 opening 22 hinge 23 insertion hole 24 elastic member 25 guide seat surface 26 taper shaft 27 handle 28 elastic member 29 load 30 lock fitting 100 moving tool

Claims

A rotating wheel supporting portion that pivotally supports the rotating wheel at one end side, forms a shaft portion at the other end side, and forms a seat having an enlarged diameter at the base end of the shaft portion; A mounting and holding portion which is disposed at a position close to the seating surface by a distance a and a mounting seating surface whose diameter is enlarged at the other end is formed at a position away from the tip of the shaft portion; and an outer periphery of the mounting and holding portion. A ring-shaped restraint that is slidably mounted and moves between the seating surface and the mounting seating surface, wherein the thickness t of the restraint is formed to be at least larger than the dimension a, and A caster having a self-weight drop-type restraint, wherein a dimension b between a tip and a back surface of the mounting seat surface is formed to be larger than a thickness t of the restraint.

A caster having a self-weight drop-type restraint, wherein the restraint has a weight that allows the weight to fall under its own weight along the outer periphery of the attachment holding portion.

A moving tool comprising a caster having a weight-restricting restraint according to claim 1 or 2 as a lower leg, wherein the moving tool forms a flat surface on which a load is mounted on a surface thereof. A frame-shaped floor plate portion having the caster fixed to the rear surface thereof and having an openable opening of the rotating wheel of the caster on the rear surface side, and rotatably connected to one end of the frame-shaped floor plate portion; A back plate that rises upward from one end of the surface of the frame-like floor plate from a position where the opening is closed to a position where the side surface of the load can be held, and that can freely enter and exit the back plate; A moving tool with a caster having a self-weight drop-type restraint, wherein a gripper held at a drawer position and a storage position is provided.

The moving tool is configured such that the frame-shaped floorboard portion and the backboard portion overlap when not in use, and the gripping tool is housed in the backboard portion and is collectively formed into a box-shaped form. A moving tool with casters having the self-weight dropping restraint according to claim 3.