JP2014129036A - Caster - Google Patents

Caster Download PDF

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JP2014129036A
JP2014129036A JP2012287670A JP2012287670A JP2014129036A JP 2014129036 A JP2014129036 A JP 2014129036A JP 2012287670 A JP2012287670 A JP 2012287670A JP 2012287670 A JP2012287670 A JP 2012287670A JP 2014129036 A JP2014129036 A JP 2014129036A
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caster
wheel
support member
horizontal line
obstacle
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JP2012287670A
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Japanese (ja)
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Kyosuke Iimura
恭右 飯村
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TOKYO KOSAKUSHO KK
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TOKYO KOSAKUSHO KK
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Priority to JP2012287670A priority Critical patent/JP2014129036A/en
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Abstract

PROBLEM TO BE SOLVED: To effectively improve a caster's ability to get over an obstacle, without complication of a cater structure.SOLUTION: A caster C includes a wheel 1 and a support member 2 therefor. The support member 2 comprises an extension part 28 that is extended out ahead of a position P where a virtual horizontal line x, passing through a level at which a distance from a lower end 12 of the wheel 1 is set to be about one-fifth of a radius of the wheel 1, and a peripheral surface 13 on the traveling forward side of the caster C of the wheel 1 are brought into contact with each other. A bottom surface of the extension part 28 is an inclined surface 28a having an inclined lower end located in the position P.

Description

この発明は、各種の家具、什器などの底部に備えられるキャスターの改良に関する。   The present invention relates to an improvement in casters provided at the bottom of various furniture and furniture.

各種の家具、什器などの底部に備えられてこれらの移動を容易にするために用いられるキャスターは、その走行面に、その車輪の半径の約五分の1を超える高さを持った障害物や、段差などがある場合、これらを乗り越え難くなることが認められる。この乗り越えの困難性は、キャスターが小径化するほど顕著となる。   Casters that are installed at the bottom of various furniture and fixtures and used to facilitate their movement are obstacles with a height exceeding about one-fifth of the radius of the wheel on the running surface. If there is a step or the like, it is recognized that it is difficult to get over these. This difficulty of getting over becomes more conspicuous as the caster becomes smaller in diameter.

この発明が解決しようとする主たる問題点は、この種のキャスターにおける障害物を乗り越える能力を、キャスターの構造を複雑にすることなく、効果的に向上させる点にある。   The main problem to be solved by the present invention is to effectively improve the ability to overcome obstacles in this type of caster without complicating the structure of the caster.

前記課題を達成するために、この発明にあっては、キャスターを、車輪とその支持部材とを備えてなるキャスターであって、
支持部材は、車輪の下端との距離をこの車輪の半径の約五分の1とするレベルを通る仮想の水平線とこの車輪のキャスターの走行前方側にある周面とが接する位置より前方に延び出す延出部を備えると共に、この延出部の底面が前記位置を傾斜下端とした傾斜面となっているものとした。
In order to achieve the above object, in the present invention, a caster is a caster comprising a wheel and a supporting member thereof,
The support member extends forward from a position where an imaginary horizontal line passing through a level where the distance from the lower end of the wheel is about one fifth of the radius of the wheel and a peripheral surface on the traveling front side of the caster of the wheel are in contact with each other. In addition to providing an extending portion to be extended, the bottom surface of the extending portion is an inclined surface having the position as the inclined lower end.

かかる構成によれば、キャスターの走行面に前記のような障害物などがある場合、前記傾斜面が車輪に先んじてこの障害物などに摺接しこれによりその乗り越えが可能とされる。かかる乗り越えを一層円滑になさしめる観点から、支持部材の前面と延出部の底面との間の隅部をアール状に成形させておくことが好ましい。また、前記傾斜面と前記仮想の水平線とがなす角度が大きすぎるとこの傾斜面が前記障害物などに突き当たった際のこの傾斜面に沿った分力が小さくなるので、かかる障害物などを乗り越え難くなる。一方、前記傾斜面と前記仮想の水平線とがなす角度が小さすぎると支持部材の前面の下端を想定される障害物などの上方に位置させるようにすると延出部の延出寸法が過大となりキャスターの前後寸法を無用に大きくさせてしまう。こうした観点から前記傾斜面は、前記仮想の水平線との間に、キャスターの走行後方側において、15度〜25度の鋭角を形成させる面としておくことが好ましい。   According to such a configuration, when there is an obstacle as described above on the traveling surface of the caster, the inclined surface slides against the obstacle or the like prior to the wheel, thereby enabling it to get over. From the viewpoint of smoothing such overcoming, it is preferable that the corner between the front surface of the support member and the bottom surface of the extending portion is formed into a round shape. Further, if the angle formed by the inclined surface and the virtual horizontal line is too large, the component force along the inclined surface when the inclined surface hits the obstacle is reduced, so that the obstacle is overcome. It becomes difficult. On the other hand, if the angle formed by the inclined surface and the imaginary horizontal line is too small, if the lower end of the front surface of the support member is positioned above an assumed obstacle or the like, the extension dimension of the extension portion becomes excessive, and the caster This will unnecessarily increase the front and rear dimensions. From such a viewpoint, it is preferable that the inclined surface is a surface that forms an acute angle of 15 degrees to 25 degrees with the virtual horizontal line on the traveling rear side of the caster.

この発明によれば、キャスターにおける障害物を乗り越える能力を、キャスターの構造を複雑にすることなく、効果的に向上させることができる。   According to the present invention, the ability of a caster to overcome an obstacle can be effectively improved without complicating the structure of the caster.

図1はこの発明の一実施の形態にかかるキャスターの斜視図である。FIG. 1 is a perspective view of a caster according to an embodiment of the present invention. 図2は前記キャスターの利用状態を示した側面図である。FIG. 2 is a side view showing a usage state of the caster. 図3は図2におけるA−A線位置での要部断面図である。FIG. 3 is a cross-sectional view of the main part at the position AA in FIG.

以下、図1〜図3に基づいて、この発明の典型的な実施の形態について、説明する。この実施の形態にかかるキャスターCは、各種の家具、什器、機器、運搬台など取り付け対象物Mの底部に備えられてこれらの移動を容易にするために用いられるものである。   A typical embodiment of the present invention will be described below with reference to FIGS. The caster C according to this embodiment is provided at the bottom of an attachment object M such as various furniture, furniture, equipment, and a carriage and is used to facilitate the movement thereof.

かかるキャスターCは、車輪1と、支持部材2とを備えてなる。図示の例では、支持部材2は、左右方向を厚さ方向とし、左側面20及び右側面21を板面とした、板状をなすように構成されている。図示の例では、支持部材2は、その前後方向略中程の位置に、その上面22と底面23とに亘る縦向き貫通穴26を備える。また、支持部材2は、この縦向き貫通穴26と後面25との間において、その左側面20と右側面21とに亘る横向き貫通穴27を備える。   The caster C includes a wheel 1 and a support member 2. In the illustrated example, the support member 2 is configured to have a plate shape in which the left-right direction is the thickness direction and the left side surface 20 and the right side surface 21 are plate surfaces. In the example shown in the drawing, the support member 2 includes a vertical through hole 26 extending over the upper surface 22 and the bottom surface 23 at a position approximately in the middle of the front-rear direction. Further, the support member 2 includes a lateral through hole 27 extending between the left side surface 20 and the right side surface 21 between the vertical through hole 26 and the rear surface 25.

図示の例では、前記横向き貫通穴27に通されたシャフト3の左端及び右端にそれぞれ、車輪1が取り付けられるようになっている。図示の例では、車輪1は、中央に前記シャフト3の通し穴10aを備えた車輪主体10と、円板状のカバー11とから構成されている。車輪主体10の外側の中央には円形の凹所10bが形成されており、この凹所10b内に前記通し穴10aの穴口が位置されている。図示の例では、車輪主体10の内側から挿通されたシャフト3の端部を前記凹所10b内でカシメてシャフト3と車輪1とを一体化させ、このカシメの後前記凹所10bを前記カバー11で塞いで車輪1を構成させている。   In the illustrated example, the wheels 1 are respectively attached to the left end and the right end of the shaft 3 passed through the lateral through hole 27. In the illustrated example, the wheel 1 includes a wheel main body 10 having a through hole 10a of the shaft 3 in the center and a disc-shaped cover 11. A circular recess 10b is formed in the center of the outside of the wheel main body 10, and the hole of the through hole 10a is located in the recess 10b. In the illustrated example, the end of the shaft 3 inserted from the inside of the wheel main body 10 is caulked in the recess 10b so that the shaft 3 and the wheel 1 are integrated, and after the caulking, the recess 10b is covered with the cover 10b. 11 is closed to form the wheel 1.

また、図示の例では、キャスターCは、前記取り付け対象物Mの底部に取り付けられる座Baと、この座Baから下方に突き出す軸体Bbとを備えた取り付け金具Bを介して、かかる家具などに備えられるようになっている。すなわち、図示の例では、キャスターCは、かかる取り付け金具Bの軸体Bbを上方から縦向き貫通穴26に差し込むことでこの軸体Bbを中心とした旋回可能に前記取り付け対象物Mの底部に備えられようになっている。図示の例では、縦向き貫通穴26は、支持部材2の底面23側を太径としてその内部に段差を有しており、この段差に縦向き貫通穴26に差し込まれた軸体Bbの下端をカシメて引っかけることで取り付け金具Bと支持部材2との組み付けがなされている。すなわち、軸体Bbの下端は縦向き貫通穴26内にある。   In the illustrated example, the caster C is attached to the furniture or the like via a mounting bracket B including a seat Ba attached to the bottom of the attachment object M and a shaft body Bb protruding downward from the seat Ba. Be prepared. That is, in the example shown in the figure, the caster C is attached to the bottom of the attachment object M so as to be pivotable about the shaft body Bb by inserting the shaft body Bb of the mounting bracket B from above into the longitudinal through hole 26. Be prepared. In the example shown in the drawing, the vertical through hole 26 has a large diameter on the bottom surface 23 side of the support member 2 and has a step inside thereof, and the lower end of the shaft body Bb inserted into the vertical through hole 26 at this step. The mounting bracket B and the support member 2 are assembled by caulking and hooking. That is, the lower end of the shaft body Bb is in the longitudinal through hole 26.

典型的には、前記車輪1及び支持部材2は合成樹脂から、前記シャフト3は金属から構成される。   Typically, the wheel 1 and the support member 2 are made of synthetic resin, and the shaft 3 is made of metal.

また、この実施の形態にあっては、支持部材2は、車輪1の下端12との距離をこの車輪1の半径の約五分の1とするレベルを通る仮想の水平線xとこの車輪1のキャスターCの走行前方側にある周面13とが接する位置Pより前方に延び出す延出部28を備えている。すなわち、支持部材2は、その前後方向の寸法を、車輪1の直径よりも大きくすると共に、車輪1の前端よりも前方に突き出す延出部28を備えた構成となっている。   Further, in this embodiment, the support member 2 includes a virtual horizontal line x passing through a level where the distance from the lower end 12 of the wheel 1 is about one fifth of the radius of the wheel 1 and the wheel 1. An extension 28 is provided that extends forward from a position P where the peripheral surface 13 on the traveling front side of the caster C contacts. That is, the support member 2 has a configuration in which the dimension in the front-rear direction is larger than the diameter of the wheel 1 and the extending portion 28 protrudes forward from the front end of the wheel 1.

具体的には、図示の例では、支持部材2は、前記仮想の水平線xに平行をなす上面22と、この仮想の水平線xに直交する前面24と、前記車輪1の走行後方側にある周面14に倣った湾曲を持ち且つ側面視の状態でこの周面14と略同面をなす後面25とを有している。(図2)これにより、キャスターCは前記延出部28を持ちながらその前後方向の寸法を最小化した構成となっている。   Specifically, in the illustrated example, the support member 2 includes an upper surface 22 that is parallel to the imaginary horizontal line x, a front surface 24 that is orthogonal to the imaginary horizontal line x, and a circumference that is on the traveling rear side of the wheel 1. It has a rear surface 25 that has a curvature following the surface 14 and is substantially flush with the peripheral surface 14 in a side view. (FIG. 2) Thereby, the caster C has the structure which minimized the dimension of the front-back direction, having the said extension part 28. FIG.

支持部材2の底面23は、後面25の下端と前記位置Pとの間では、前記仮想の水平線xに平行をなす水平面となっている。一方、かかる支持部材2の底面23のうち、前記延出部28の底面となる箇所、図示の例では、前記水平面の前端と前記前面24の下端との間に亘る箇所は、前記位置Pを傾斜下端とし、かつ、前記前面24の下端を傾斜上端とした傾斜面28aとなっている。図示の例では、かかる傾斜面28aは、前記仮想の水平線xとの間に、キャスターCの走行後方側であってこの仮想の水平線x下に、20度の鋭角yを形成させる面となっている。   The bottom surface 23 of the support member 2 is a horizontal plane parallel to the virtual horizontal line x between the lower end of the rear surface 25 and the position P. On the other hand, in the bottom surface 23 of the support member 2, the position serving as the bottom surface of the extending portion 28, in the illustrated example, the position extending between the front end of the horizontal plane and the lower end of the front surface 24 is the position P. An inclined surface 28a having an inclined lower end and an inclined upper end at the lower end of the front surface 24 is formed. In the illustrated example, the inclined surface 28a is a surface that forms a 20-degree acute angle y between the virtual horizontal line x and the virtual horizontal line x on the rear side of the caster C and below the virtual horizontal line x. Yes.

キャスターCは、走行面に、その車輪1の半径の約五分の1を超える高さを持った障害物や、段差などがある場合、これらを乗り越え難くなることが認められる。この乗り越えの困難性は、キャスターCが小径化するほど顕著となる。しかるに、この実施の形態にかかるキャスターCにあっては、その走行面に前記のような障害物などがある場合、前記傾斜面28aが車輪1に先んじてこの障害物などに摺接しこれによりその乗り越えが可能とされる。図示の例では、かかる乗り越えを一層円滑になさしめる観点から、支持部材2の前面24と延出部28の底面との間の隅部29はアール状に成形されている。   It is recognized that the caster C can hardly get over an obstacle or a step having a height exceeding about one fifth of the radius of the wheel 1 on the traveling surface. This difficulty of getting over becomes more pronounced as the diameter of the caster C becomes smaller. However, in the caster C according to this embodiment, when there is an obstacle such as the above on the traveling surface, the inclined surface 28a is brought into sliding contact with the obstacle before the wheel 1, thereby Overcoming is possible. In the illustrated example, the corner 29 between the front surface 24 of the support member 2 and the bottom surface of the extending portion 28 is formed in a round shape from the viewpoint of smoothing such overcoming.

前記傾斜面28aと前記仮想の水平線xとがなす角度が大きすぎるとこの傾斜面28aが前記障害物などに突き当たった際のこの傾斜面28aに沿った分力が小さくなるので、かかる障害物などを乗り越え難くなる。一方、前記傾斜面28aと前記仮想の水平線xとがなす角度が小さすぎると支持部材2の前面24の下端を想定される障害物などの上方に位置Pさせるようにすると延出部28の延出寸法が過大となりキャスターCの前後寸法を無用に大きくさせてしまう。こうした観点から前記傾斜面28aは、前記仮想の水平線xとの間に、キャスターCの走行後方側において、15度〜25度の鋭角yを形成させる面としておくことが好適である。   If the angle formed by the inclined surface 28a and the imaginary horizontal line x is too large, the component force along the inclined surface 28a when the inclined surface 28a hits the obstacle is reduced. It becomes difficult to get over. On the other hand, if the angle formed by the inclined surface 28a and the imaginary horizontal line x is too small, the extension of the extension portion 28 will be caused if the lower end of the front surface 24 of the support member 2 is positioned P above an assumed obstacle. The protruding dimension becomes excessive, and the front and rear dimensions of the caster C are unnecessarily increased. From this point of view, it is preferable that the inclined surface 28a is a surface that forms an acute angle y of 15 degrees to 25 degrees on the traveling rear side of the caster C with the virtual horizontal line x.

C キャスター
x 仮想の水平線
P 位置
1 車輪
12 下端
13 周面
2 支持部材
28 延出部
28a 傾斜面
C caster x virtual horizontal line P position 1 wheel 12 lower end 13 peripheral surface 2 support member 28 extending portion 28a inclined surface

Claims (1)

車輪とその支持部材とを備えてなるキャスターであって、
支持部材は、車輪の下端との距離をこの車輪の半径の約五分の1とするレベルを通る仮想の水平線とこの車輪のキャスターの走行前方側にある周面とが接する位置より前方に延び出す延出部を備えると共に、この延出部の底面が前記位置を傾斜下端とした傾斜面となっていることを特徴とするキャスター。
A caster comprising a wheel and a supporting member thereof,
The support member extends forward from a position where an imaginary horizontal line passing through a level where the distance from the lower end of the wheel is about one fifth of the radius of the wheel and a peripheral surface on the traveling front side of the caster of the wheel are in contact with each other. A caster characterized in that it has an extending portion to be extended and the bottom surface of the extending portion is an inclined surface having the position as the inclined lower end.
JP2012287670A 2012-12-28 2012-12-28 Caster Pending JP2014129036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012287670A JP2014129036A (en) 2012-12-28 2012-12-28 Caster

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012287670A JP2014129036A (en) 2012-12-28 2012-12-28 Caster

Publications (1)

Publication Number Publication Date
JP2014129036A true JP2014129036A (en) 2014-07-10

Family

ID=51407861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012287670A Pending JP2014129036A (en) 2012-12-28 2012-12-28 Caster

Country Status (1)

Country Link
JP (1) JP2014129036A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210061042A1 (en) * 2019-08-29 2021-03-04 Samsung Electronics Co., Ltd. Caster device, robot having the same, and method for driving robot

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210061042A1 (en) * 2019-08-29 2021-03-04 Samsung Electronics Co., Ltd. Caster device, robot having the same, and method for driving robot
US11701941B2 (en) * 2019-08-29 2023-07-18 Samsung Electronics Co., Ltd. Caster device, robot having the same, and method for driving robot

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