JP4323887B2 - Roller device - Google Patents

Roller device Download PDF

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JP4323887B2
JP4323887B2 JP2003275629A JP2003275629A JP4323887B2 JP 4323887 B2 JP4323887 B2 JP 4323887B2 JP 2003275629 A JP2003275629 A JP 2003275629A JP 2003275629 A JP2003275629 A JP 2003275629A JP 4323887 B2 JP4323887 B2 JP 4323887B2
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outer ring
sliding
ring
roller device
along
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JP2005036920A (en
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浩明 遠山
昌治 萱
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株式会社ムラコシ精工
株式会社アマチ
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Description

本発明は、略円筒状の外輪の内側に軸体を取り付けたローラ装置に関する。   The present invention relates to a roller device in which a shaft is attached to the inside of a substantially cylindrical outer ring.

従来、この種のローラ装置は、側枠としての略円筒状の外輪を備えている。そして、この外輪の内側面における軸方向に沿った両端縁には、周方向に沿った一対の側方筐体としての溝部がそれぞれ形成されている。これら各溝部には、円環状のゴム製ピードが周方向に沿って同心状に嵌合されている。そして、これら各ゴム製ピードを外輪の各溝部に嵌合させた状態で、この外輪の内側には、円筒状の軸体が嵌合されて取り付けられている。   Conventionally, this type of roller device includes a substantially cylindrical outer ring as a side frame. And the groove part as a pair of side housing | casing along the circumferential direction is each formed in the both-ends edge along the axial direction in the inner surface of this outer ring | wheel. In each of these grooves, an annular rubber pea is fitted concentrically along the circumferential direction. A cylindrical shaft body is fitted and attached to the inner side of the outer ring in a state where the rubber peads are fitted in the grooves of the outer ring.

この軸体は、外周面に周方向に沿って突出したリムを備えた蓋を備えている。この蓋は、外周面に周方向に沿ったリムが形成された軸箱の先端部に嵌合されて取り付けられている。ここで、これら蓋および軸箱それぞれのリムは、この軸箱を外輪に挿通させて取り付けた状態で、この外輪の各溝部に嵌合されたゴム製ピードを挟持固定する。すなわち、これら各ゴム製ピードは、外輪をレールに沿って転がせた際に、このレールから外輪を介して軸体へと伝わる衝撃を吸収して緩衝させる(例えば、特許文献１参照。)。
特開昭４６−４０５９号公報（第１−３頁、第３図−第４図） The shaft body includes a lid provided with a rim projecting along the circumferential direction on the outer peripheral surface. The lid is fitted and attached to a tip portion of an axle box having a circumferential rim formed on the outer peripheral surface. Here, the rim of each of the lid and the axle box sandwiches and fixes the rubber peas fitted in the respective groove portions of the outer ring in a state where the axle box is inserted and attached to the outer ring. That is, each of these rubber peas absorbs and cushions an impact transmitted from the rail to the shaft body through the outer ring when the outer ring is rolled along the rail (see, for example, Patent Document 1).
Japanese Unexamined Patent Publication No. Sho 46-4059 (page 1-3, FIGS. 3-4)

しかしながら、上述のローラ装置では、外輪と軸体との間に各ゴム製ピードを介在させて、これらゴム製ピードにて外輪への衝撃を吸収させている。このため、これらゴム製ピードを外輪の径方向に向けて小さくした場合には、これらゴム製ピードによる弾性力を十分に確保できなくなる。よって、これらゴム製ピードを径方向に小さくすることが容易ではないから、ローラ装置自体の径方向に対する大きさを小さくすることが容易ではない。特に、このローラ装置の各ゴム製ピードによる衝撃吸収効果、いわゆるダンパ効果を高めるために、これらゴム製ピードを径方向に沿って厚くした場合には、ローラ装置自体の径方向に対する大きさを小さくすることがさらに容易ではないという問題を有している。   However, in the above-mentioned roller device, each rubber pead is interposed between the outer ring and the shaft body, and the impact to the outer ring is absorbed by these rubber peas. For this reason, when these rubber-made speeds are reduced in the radial direction of the outer ring, it is impossible to sufficiently secure the elastic force due to these rubber-like speeds. Therefore, since it is not easy to reduce these rubber-made speeds in the radial direction, it is not easy to reduce the size of the roller device itself in the radial direction. In particular, in order to increase the impact absorbing effect of each rubber pea of this roller device, so-called damper effect, when these rubber peas are thickened along the radial direction, the size of the roller device itself in the radial direction is reduced. It has the problem that it is not even easier to do.

本発明は、このような点に鑑みなされたもので、径方向に対する大きさを小さくできるローラ装置を提供することを目的とする。   SUMMARY An advantage of some aspects of the invention is that it provides a roller device that can be reduced in size in the radial direction.

請求項１記載のローラ装置は、略円筒状の外輪と、この外輪の内側に取り付けられる軸体と、この軸体を前記外輪に付勢する付勢手段とを具備し、前記外輪の内周部および前記軸体の外周部のいずれか一方には、これら外輪および軸体のいずれか一方の周方向に沿って、かつこれら外輪および軸体のいずれか一方の回転軸方向に向けて傾斜した傾斜部が設けられ、前記外輪の内周部および前記軸体の外周部のいずれか他方には、前記傾斜部の傾斜方向に沿って摺動する摺動部が設けられ、前記付勢手段は、前記摺動部を前記傾斜部に付勢するものである。   The roller device according to claim 1 comprises a substantially cylindrical outer ring, a shaft body attached to the inner side of the outer ring, and a biasing means for biasing the shaft body to the outer ring, and an inner periphery of the outer ring. And the outer periphery of the shaft body are inclined along the circumferential direction of either the outer ring or the shaft body and toward the rotational axis direction of either the outer ring or the shaft body. An inclined part is provided, and a sliding part that slides along the inclination direction of the inclined part is provided on the other of the inner peripheral part of the outer ring and the outer peripheral part of the shaft body, and the biasing means The sliding portion is urged to the inclined portion.

そして、略円筒状の外輪の内周面と、この外輪の内側に取り付けられる軸体の外周面とのいずれか一方に設けた傾斜部を、これら外輪および軸体のいずれか一方の周方向に沿って、かつこれら外輪および軸体のいずれか一方の回転軸方向に向けて傾斜させた。また、これら外輪の内周面および軸体の外周面のいずれか他方に、傾斜面の傾斜方向に沿って摺動する摺動部を設けるとともに、この摺動部を付勢手段にて傾斜部に付勢させた。この結果、外輪の外周部に加わる外力が、傾斜部に対する摺動部の摺動によって、この外輪の回転軸方向に変換させて、この傾斜部に対する摺動部の摺動を付勢手段にて受け止める。したがって、この外輪を径方向に大きくしなくても、この外輪の外周部に加わる外力を付勢手段にて十分に吸収できるから、この外輪の径方向に対する大きさを小さくできる。   Then, an inclined portion provided on either the inner peripheral surface of the substantially cylindrical outer ring or the outer peripheral surface of the shaft body attached to the inner side of the outer ring is provided in the circumferential direction of either the outer ring or the shaft body. And inclined toward the rotation axis direction of one of the outer ring and the shaft body. In addition, a sliding portion that slides along the inclined direction of the inclined surface is provided on either the inner peripheral surface of the outer ring or the outer peripheral surface of the shaft body, and the sliding portion is inclined by the urging means. Was energized. As a result, the external force applied to the outer peripheral portion of the outer ring is converted into the rotation axis direction of the outer ring by sliding of the sliding portion with respect to the inclined portion, and the sliding portion slides with respect to the inclined portion by the biasing means. Take it. Therefore, even if the outer ring is not enlarged in the radial direction, the external force applied to the outer peripheral portion of the outer ring can be sufficiently absorbed by the urging means, so that the size of the outer ring in the radial direction can be reduced.

請求項２記載のローラ装置は、請求項１記載のローラ装置において、付勢手段は、外輪および軸体の回転軸方向の同軸状に取り付けられたコイルスプリングであるものである。   A roller device according to a second aspect is the roller device according to the first aspect, wherein the urging means is a coil spring attached coaxially in the rotation axis direction of the outer ring and the shaft body.

そして、付勢手段を外輪および軸体の回転軸方向の同軸状に取り付けられたコイルスプリングとした。このため、この付勢手段の構成を簡略にできるとともに、このコイルスプリングの弾性力の調整によって、傾斜部に対する摺動部の付勢力や摺動距離を調整できるので、この傾斜部に対する摺動部の付勢力および摺動距離の調整を容易にできる。   The urging means is a coil spring attached coaxially in the rotation axis direction of the outer ring and the shaft body. For this reason, the structure of the urging means can be simplified, and the urging force and sliding distance of the sliding portion with respect to the inclined portion can be adjusted by adjusting the elastic force of the coil spring. The biasing force and sliding distance can be easily adjusted.

請求項３記載のローラ装置は、請求項１または２記載のローラ装置において、傾斜部は、外輪の内周部における回転軸方向に沿った両端部のそれぞれに設けられ、軸体は、前記外輪のそれぞれの傾斜部を摺動する一対の摺動部材を備えたものである。   The roller device according to a third aspect is the roller device according to the first or second aspect, wherein the inclined portion is provided at each of both end portions along the rotation axis direction in the inner peripheral portion of the outer ring, and the shaft body is the outer ring. These are provided with a pair of sliding members that slide on the respective inclined portions.

そして、外輪の内周部における回転軸方向に沿った両端部のそれぞれに傾斜部を設け、これら傾斜部のそれぞれに対して軸体の一対の摺動部材が摺動する。このため、外輪の外周部に加わる外力を、各傾斜部に対する一対の摺動部材の摺動によって、外輪の回転軸方向に沿った両端部で吸収できる。したがって、外輪の外周部に加わる外力の吸収を簡単な構成でより確実にできる。   And an inclined part is provided in each of the both ends along the rotating shaft direction in the inner peripheral part of an outer ring | wheel, and a pair of sliding member of a shaft body slides with respect to each of these inclined parts. For this reason, the external force applied to the outer peripheral part of the outer ring can be absorbed by both end portions along the rotation axis direction of the outer ring by sliding of the pair of sliding members with respect to each inclined part. Therefore, absorption of external force applied to the outer peripheral portion of the outer ring can be more reliably performed with a simple configuration.

請求項１記載のローラ装置によれば、外輪の外周部に加わる外力が、傾斜部に対する摺動部の摺動によって、この外輪の回転軸方向に変換させて、この傾斜部に対する摺動部の摺動を付勢手段にて受け止める。したがって、この外輪を径方向に大きくしなくても、この外輪の外周部に加わる外力を付勢手段にて十分に吸収できるから、この外輪の径方向に対する大きさを小さくできる。   According to the roller device of the first aspect, the external force applied to the outer peripheral portion of the outer ring is converted into the rotation axis direction of the outer ring by sliding of the sliding portion with respect to the inclined portion, and the sliding portion with respect to the inclined portion is The sliding is received by the biasing means. Therefore, even if the outer ring is not enlarged in the radial direction, the external force applied to the outer peripheral portion of the outer ring can be sufficiently absorbed by the urging means, so that the size of the outer ring in the radial direction can be reduced.

請求項２記載のローラ装置によれば、付勢手段の構成を簡略にできるとともに、このコイルスプリングの弾性力の調整によって、傾斜部に対する摺動部の付勢力や摺動距離を調整できるので、この傾斜部に対する摺動部の付勢力および摺動距離の調整を容易にできる。   According to the roller device of the second aspect, the configuration of the biasing means can be simplified, and the biasing force and sliding distance of the sliding portion relative to the inclined portion can be adjusted by adjusting the elastic force of the coil spring. Adjustment of the biasing force and sliding distance of the sliding portion with respect to the inclined portion can be facilitated.

請求項３記載のローラ装置によれば、外輪の外周部に加わる外力を、各傾斜部に対する一対の摺動部材の摺動によって、外輪の回転軸方向に沿った両端部で吸収できる。したがって、外輪の外周部に加わる外力の吸収を簡単な構成でより確実にできる。   According to the roller device of the third aspect, the external force applied to the outer peripheral portion of the outer ring can be absorbed at both end portions along the rotation axis direction of the outer ring by the sliding of the pair of sliding members with respect to the respective inclined portions. Therefore, absorption of external force applied to the outer peripheral portion of the outer ring can be more reliably performed with a simple configuration.

以下、本発明のローラ装置の第１の実施の形態の構成を図１ないし図３を参照して説明する。   The configuration of the first embodiment of the roller device of the present invention will be described below with reference to FIGS.

図１ないし図３において、１はローラ装置で、このローラ装置１は、例えば、食器などの小物を収容させる被移動物としての家具であるワゴン２の水平な取付面としての底面部３などに取り付けられるキャスタ用ローラである。そして、このローラ装置１は、案内部材としての床面Ａ上を走行する略円筒状の外輪５を備えている。この外輪５は、この外輪５の外周面である走行面６を構成する円筒状の外周部材７を備えている。この外周部材７の内周面８には、この外周部材７の内側に同軸状に嵌合される略円筒状の内周部材９が取り付けられている。   In FIG. 1 to FIG. 3, reference numeral 1 denotes a roller device. The roller device 1 is, for example, on a bottom surface portion 3 as a horizontal mounting surface of a wagon 2 that is furniture as a moving object for storing small items such as tableware. A caster roller to be attached. And this roller apparatus 1 is provided with the substantially cylindrical outer ring | wheel 5 which drive | works the floor surface A as a guide member. The outer ring 5 includes a cylindrical outer peripheral member 7 that constitutes a running surface 6 that is an outer peripheral surface of the outer ring 5. A substantially cylindrical inner peripheral member 9 that is coaxially fitted inside the outer peripheral member 7 is attached to the inner peripheral surface 8 of the outer peripheral member 7.

この内周部材９の内周面11における回転軸方向に沿った両端縁には、この内周部材９の周方向に沿って突出した断面三角形状の一対の係合片部12,13がそれぞれ設けられている。これら係合片部12,13は、内周部材９の回転軸方向に沿った端面に沿って突出している。さらに、これら係合片部12,13の互いに対向した側面部には、内周部材９の周方向に沿って、この内周部材９の回転軸方向に向けて傾斜したテーパ状の傾斜部としての一対のテーパ面14,15がそれぞれ設けられている。これら一対のテーパ面14,15は、内周部材９の内周面11における回転軸方向に沿った両端部のそれぞれに略ハの字状となるように設けられている。   A pair of engaging pieces 12 and 13 having a triangular cross section projecting along the circumferential direction of the inner peripheral member 9 are provided at both end edges along the rotational axis direction of the inner peripheral surface 11 of the inner peripheral member 9. Is provided. These engagement piece portions 12 and 13 protrude along end faces along the rotation axis direction of the inner peripheral member 9. Furthermore, the side surfaces of the engagement pieces 12 and 13 that face each other are tapered inclined portions that are inclined in the direction of the rotation axis of the inner peripheral member 9 along the circumferential direction of the inner peripheral member 9. A pair of tapered surfaces 14 and 15 are provided. The pair of tapered surfaces 14 and 15 are provided so as to have a substantially square shape at each of both end portions along the rotation axis direction of the inner peripheral surface 11 of the inner peripheral member 9.

さらに、これら一対のテーパ面14,15は、内周部材９の回転軸方向における中心側から、この内周部材９の回転軸方向における両端側に向かうに連れて、この内周部材９の中心軸方向に向けて傾斜している。また、内周部材９の内周面における一対のテーパ面14,15の間には、この内周部材９の周方向および回転軸方向のそれぞれに沿った周面部16が形成されている。   Further, the pair of taper surfaces 14 and 15 are arranged such that the center of the inner peripheral member 9 increases from the center side in the rotation axis direction of the inner peripheral member 9 toward both ends in the rotation axis direction of the inner peripheral member 9. It is inclined toward the axial direction. Further, between the pair of tapered surfaces 14, 15 on the inner peripheral surface of the inner peripheral member 9, a peripheral surface portion 16 is formed along each of the peripheral direction and the rotation axis direction of the inner peripheral member 9.

ここで、この内周部材９は、この内周部材９の直径方向に沿って分割された一対の組立部材17により構成されている。これら組立部材17は、それぞれが同一形状に形成されている。さらに、これら組立部材17それぞれの周方向に沿った一方の端面には、断面矩形状の組立凸部18が突設されている。これら組立凸部18は、組立部材17の軸方向に沿った中央部に設けられており、この組立部材17の周面部および外周面に沿って突出している。また、これら組立部材17それぞれの周方向に沿った他方の端面には、これら組立部材17の径方向である厚さ方向に沿った断面凹状の組立溝部19がそれぞれ設けられている。これら組立溝部19は、組立部材17の軸方向に沿った中央部に設けられており、一対の組立部材17を組み立てて内周部材９とする際に、対向する組立凸部18のそれぞれに嵌合される。   Here, the inner peripheral member 9 is constituted by a pair of assembly members 17 divided along the diameter direction of the inner peripheral member 9. These assembly members 17 are formed in the same shape. Further, an assembly projection 18 having a rectangular cross section is projected from one end face along the circumferential direction of each assembly member 17. These assembly protrusions 18 are provided at the center of the assembly member 17 along the axial direction, and project along the peripheral surface portion and the outer peripheral surface of the assembly member 17. In addition, on the other end surface along the circumferential direction of each of the assembly members 17, assembly groove portions 19 having a concave cross section along the thickness direction which is the radial direction of the assembly members 17 are provided. These assembly groove portions 19 are provided in the central portion of the assembly member 17 along the axial direction. When the pair of assembly members 17 are assembled into the inner peripheral member 9, the assembly groove portions 19 are fitted in the respective assembly projections 18 facing each other. Combined.

一方、外輪５の内周部材９の内側には、略円筒状の軸体としての内輪21が取り付けられている。この内輪21は、この内輪21の内周面を構成する摺動部材としての内輪である内側部材22を備えている。この内側部材22は、細長円筒状の軸部23を備えており、この軸部23の軸方向における一端縁である基端縁には、この軸部23の周方向に沿って突出した円錐面状の摺動片部24が設けられている。この摺動片部24は、先端側が軸部23の軸方向における他端側である先端側に向けて傾斜している。   On the other hand, an inner ring 21 as a substantially cylindrical shaft body is attached to the inner side of the inner peripheral member 9 of the outer ring 5. The inner ring 21 includes an inner member 22 that is an inner ring as a sliding member that constitutes the inner peripheral surface of the inner ring 21. The inner member 22 includes an elongated cylindrical shaft portion 23, and a conical surface that protrudes along the circumferential direction of the shaft portion 23 at a base end edge that is one end edge in the axial direction of the shaft portion 23. A sliding piece portion 24 is provided. The sliding piece portion 24 is inclined toward the distal end side, which is the other end side in the axial direction of the shaft portion 23, on the distal end side.

そして、この摺動片部24の外周面には、外輪５の内周部材９の一方のテーパ面14に、このテーパ面14の傾斜方向に沿って摺動可能に当接される摺動部としての摺動面25が設けられている。この摺動面25は、軸部23の周方向に沿っており、この軸部23の基端側から先端側に向かうに連れて、この軸部23の径方向に向けて突出するように傾斜している。また、内側部材22の軸部23における摺動片部24よりも先端側の外周面には、周方向に沿った段状の係止段部26が設けられている。   The sliding portion 24 is in contact with the outer peripheral surface of the inner ring member 9 of the outer ring 5 so as to be slidable along the inclined direction of the tapered surface 14. A sliding surface 25 is provided. The sliding surface 25 is along the circumferential direction of the shaft portion 23, and is inclined so as to protrude in the radial direction of the shaft portion 23 from the proximal end side to the distal end side of the shaft portion 23. is doing. Further, a stepped locking step portion 26 along the circumferential direction is provided on the outer peripheral surface of the shaft portion 23 of the inner member 22 on the distal end side of the sliding piece portion 24.

一方、内輪21の内側部材22の軸部23の先端側は、この内側部材22に対向して配設された摺動部材としての内輪である外側部材31の細長円筒状の軸部32に摺動可能に内嵌合されている。この外側部材31は、内側部材22とともに、外輪５の内周部材９の各テーパ面14,15のそれぞれを摺動する一対の摺動部材を構成する。また、この外側部材31の軸部32は、内側部材22の軸部23の外径寸法よりも若干大きな内径寸法を有しているとともに、この内側部材22の係止段部26よりも基端側の外径寸法に等しい外径寸法を有している。   On the other hand, the distal end side of the shaft portion 23 of the inner member 22 of the inner ring 21 is slid onto the elongated cylindrical shaft portion 32 of the outer member 31 which is an inner ring as a sliding member disposed facing the inner member 22. Internally movably fitted. The outer member 31 and the inner member 22 constitute a pair of sliding members that slide on the respective tapered surfaces 14 and 15 of the inner peripheral member 9 of the outer ring 5. Further, the shaft portion 32 of the outer member 31 has an inner diameter dimension slightly larger than the outer diameter dimension of the shaft portion 23 of the inner member 22, and the proximal end than the locking step portion 26 of the inner member 22. The outer diameter dimension is equal to the outer diameter dimension of the side.

そして、この外側部材31の軸部32の軸方向における一端縁である基端縁には、この軸部32の周方向に沿って突出した円錐面状の摺動片部33が設けられている。この摺動片部33は、先端側が軸部32の軸方向における他端側である先端側に向けて傾斜している。そして、この摺動片部33の外周面には、外輪５の内周部材９の他方のテーパ面15に、このテーパ面15の傾斜方向に沿って摺動可能に当接される摺動部としての摺動面34が設けられている。この摺動面34は、軸部32の周方向に沿っており、この軸部32の基端側から先端側に向かうに連れて、この軸部の径方向に向けて突出するように傾斜している。   A base end edge that is one end edge in the axial direction of the shaft portion 32 of the outer member 31 is provided with a conical surface sliding piece portion 33 that protrudes along the circumferential direction of the shaft portion 32. . The sliding piece portion 33 is inclined toward the distal end side, which is the other end side in the axial direction of the shaft portion 32, on the distal end side. The sliding portion 33 is in contact with the other tapered surface 15 of the inner peripheral member 9 of the outer ring 5 slidably in contact with the other tapered surface 15 along the inclined direction of the tapered surface 15. A sliding surface 34 is provided. The sliding surface 34 is along the circumferential direction of the shaft portion 32, and is inclined so as to protrude in the radial direction of the shaft portion from the proximal end side to the distal end side of the shaft portion 32. ing.

さらに、この外側部材31の軸部32の外周面には、螺旋状に巻回した付勢手段としてのコイルスプリング35が、この外側部材31の軸部32の同軸状に嵌合されて取り付けられている。このコイルスプリング35は、外輪５および内輪21のそれぞれの同軸状に取り付けられており、この内輪21の外周面を外輪５の内周面に接触させる方向に付勢させている。そして、このコイルスプリング35は、外側部材31の軸部32の外径寸法より若干大きな内径寸法を有している。また、このコイルスプリング35は、外側部材31の軸部32の長さ寸法に、内側部材22の軸部23における係止段部26の基端側の長さ寸法を加えた長さ寸法よりも大きな長さ寸法を有している。   Further, a coil spring 35 as a biasing means wound spirally is fitted and attached to the outer peripheral surface of the shaft portion 32 of the outer member 31 so as to be coaxial with the shaft portion 32 of the outer member 31. ing. The coil spring 35 is attached coaxially to each of the outer ring 5 and the inner ring 21, and biases the outer peripheral surface of the inner ring 21 in a direction in contact with the inner peripheral surface of the outer ring 5. The coil spring 35 has an inner diameter that is slightly larger than the outer diameter of the shaft portion 32 of the outer member 31. Further, the coil spring 35 has a length dimension obtained by adding a length dimension of the base end side of the locking step portion 26 in the shaft portion 23 of the inner member 22 to the length dimension of the shaft portion 32 of the outer member 31. Has a large length dimension.

すなわち、このコイルスプリング35は、内側部材22と外側部材31との間を、これら内側部材22および外側部材31それぞれの軸部23,32の回転軸方向に沿って付勢する。したがって、これらコイルスプリング35は、これら内側部材22および外側部材31それぞれの摺動片部24,33の摺動面25,34を、これら内側部材22および外側部材31それぞれの軸部23,32の軸方向である回転軸方向に沿って、外輪５の内周部材９の各テーパ面14,15に接触させる方向に向けて付勢する。言い換えると、このコイルスプリング35は、外輪５の外周部材７の外周面に加わる外力、すなわち衝撃を、内輪21の内側部材22および外側部材31それぞれの摺動面25,34による外輪５の内周部材９の各テーパ面14,15に対する摺動によって、この外輪５の回転軸方向に変換させて吸収させる。   That is, the coil spring 35 biases between the inner member 22 and the outer member 31 along the rotation axis direction of the shaft portions 23 and 32 of the inner member 22 and the outer member 31, respectively. Accordingly, the coil springs 35 are formed so that the sliding surfaces 25 and 34 of the sliding piece portions 24 and 33 of the inner member 22 and the outer member 31 respectively correspond to the shaft portions 23 and 32 of the inner member 22 and the outer member 31, respectively. The urging is performed in a direction in which the taper surfaces 14 and 15 of the inner peripheral member 9 of the outer ring 5 are brought into contact with each other along the axial direction of the rotation axis. In other words, the coil spring 35 applies an external force applied to the outer peripheral surface of the outer peripheral member 7 of the outer ring 5, that is, an impact, to the inner periphery of the outer ring 5 by the sliding surfaces 25 and 34 of the inner member 22 and the outer member 31 of the inner ring 21. The sliding movement of the member 9 with respect to the respective tapered surfaces 14 and 15 converts the outer ring 5 into the rotational axis direction and absorbs it.

さらに、内側部材22の軸部23の内側には、細長円柱状の回転軸41が周方向に沿って回転可能に挿通されている。そして、この回転軸41の両端部は、下方に向けて開口した断面コ字状のホルダ42の互いに対向する両側面部43の内側面に取り付けられて固定されている。このとき、このホルダ42には、このホルダ42の両側面部43の下端縁よりも外周部材７の走行面６を下方に突出させた状態で、この外周部材７を備えたローラ装置１が回転可能に取り付けられている。ここで、このホルダ42は、矩形平板状の上面部44を備えており、この上面部44の上側面は、ワゴン２の底面部３に当接させて面接触されて固定されている。また、この上面部44の幅方向における両側縁のそれぞれには、下方に向けて突出した矩形平板状の側面部43の一端縁が連結されて取り付けられている。   Further, an elongated cylindrical rotation shaft 41 is inserted inside the shaft portion 23 of the inner member 22 so as to be rotatable along the circumferential direction. Then, both end portions of the rotating shaft 41 are attached and fixed to the inner side surfaces of the opposite side surface portions 43 of the holder 42 having a U-shaped cross section that opens downward. At this time, the roller device 1 provided with the outer peripheral member 7 is rotatable in the holder 42 in a state where the running surface 6 of the outer peripheral member 7 protrudes downward from the lower end edges of the side surface portions 43 of the holder 42. Is attached. Here, the holder 42 is provided with a rectangular flat plate-like upper surface portion 44, and the upper surface of the upper surface portion 44 is fixed in contact with the bottom surface portion 3 of the wagon 2 by surface contact. Further, one end edge of a rectangular flat side surface portion 43 protruding downward is connected and attached to each of both side edges in the width direction of the upper surface portion 44.

次に、上記第１の実施の形態の組立動作を説明する。   Next, the assembling operation of the first embodiment will be described.

まず、内輪21の外側部材31の軸部32の外側にコイルスプリング35の軸方向における一端側を嵌合させる。この後、この外側部材31の軸部32に内輪21の内側部材22の軸部23を内嵌合させるとともに、この内側部材22の軸部23の係止段部26の基端側にコイルスプリング35の軸方向における他端側を嵌合させる。   First, one end side in the axial direction of the coil spring 35 is fitted to the outside of the shaft portion 32 of the outer member 31 of the inner ring 21. Thereafter, the shaft portion 23 of the inner member 22 of the inner ring 21 is fitted into the shaft portion 32 of the outer member 31, and the coil spring is disposed on the proximal end side of the locking step portion 26 of the shaft portion 23 of the inner member 22. The other end side in the axial direction of 35 is fitted.

この状態で、これら内側部材22および外側部材31のそれぞれの摺動面25,34に、一対の組立部材17それぞれのテーパ面14,15のそれぞれを当接させるとともに、これら一対の組立部材17の組立凸部18を、これら一対の組立部材17の組立溝部19に嵌合させて外輪５の内周部材９を組み立てる。   In this state, the taper surfaces 14 and 15 of the pair of assembly members 17 are brought into contact with the sliding surfaces 25 and 34 of the inner member 22 and the outer member 31, respectively. The assembly protrusion 18 is fitted into the assembly groove 19 of the pair of assembly members 17 to assemble the inner peripheral member 9 of the outer ring 5.

この後、これら一対の組立部材17により組み立てられた内周部材９を外周部材７の内側に嵌合させる。   Thereafter, the inner peripheral member 9 assembled by the pair of assembly members 17 is fitted inside the outer peripheral member 7.

この状態で、内輪21の内側部材22の軸部23に回転軸41を挿通させた後、この回転軸41の両端部をホルダ42の両側面部43の内側面に固定させてローラ装置１とする。   In this state, after the rotating shaft 41 is inserted through the shaft portion 23 of the inner member 22 of the inner ring 21, both ends of the rotating shaft 41 are fixed to the inner surfaces of the side surface portions 43 of the holder 42 to form the roller device 1. .

さらに、このローラ装置１のホルダ42の上面部44の上面をワゴン２の底面部３に当接させて固定して、このワゴン２を、床面Ａ上を走行可能にする。   Furthermore, the upper surface of the upper surface portion 44 of the holder 42 of the roller device 1 is fixed in contact with the bottom surface portion 3 of the wagon 2 so that the wagon 2 can run on the floor surface A.

次に、上記第１の実施の形態の作用を説明する。   Next, the operation of the first embodiment will be described.

まず、図２に示すように、ローラ装置１により平坦な床面Ａ上を走行している場合には、このローラ装置１のコイルスプリング35による内輪21の内側部材22と外側部材31との間の付勢によって、これら内側部材22および外側部材31それぞれの摺動面25,34の先端側のみが、外輪５の内周部材９の各テーパ面14,15に接触した状態となっている。   First, as shown in FIG. 2, when the roller device 1 is running on a flat floor surface A, a gap between the inner member 22 and the outer member 31 of the inner ring 21 by the coil spring 35 of the roller device 1. Due to this urging, only the tip sides of the sliding surfaces 25 and 34 of the inner member 22 and the outer member 31 are in contact with the tapered surfaces 14 and 15 of the inner peripheral member 9 of the outer ring 5.

この状態から、図３に示すように、床面Ａ上の突出物である障害物としての段差Ｂをローラ装置１が乗り越える場合には、この段差Ｂを乗り越える際の衝撃、すなわち外輪５の外周部材７の走行面６への外力によって、この外輪５が上方に向けて移動する。   In this state, as shown in FIG. 3, when the roller device 1 gets over the step B as an obstacle that is a protrusion on the floor surface A, the impact when getting over the step B, that is, the outer periphery of the outer ring 5 The outer ring 5 moves upward by an external force applied to the running surface 6 of the member 7.

このとき、この外輪５が上方に向けて移動する移動力が、この外輪５の内周部材９の各テーパ面14,15を介して内輪21の内側部材22および外側部材31の各摺動面25,34へと伝わる。   At this time, the moving force that the outer ring 5 moves upward is caused by the sliding surfaces of the inner member 22 and the outer member 31 of the inner ring 21 via the tapered surfaces 14 and 15 of the inner peripheral member 9 of the outer ring 5. To 25,34.

そして、この外輪５の内周部材９の傾斜した各テーパ面14,15への内輪21の各摺動面25,34の摺動可能な接触によって、外輪５が上方に向けて移動する移動力が、この外輪５の回転軸方向に沿って内輪21の各摺動面25,34が内側に移動する移動力に変換されるとともに、この内輪21の各摺動面25,34それぞれによる内側への移動力が、この内輪21の各摺動面25,34間のコイルスプリング35の弾性力にて吸収される。   Then, the slidable contact of the sliding surfaces 25 and 34 of the inner ring 21 with the inclined tapered surfaces 14 and 15 of the inner peripheral member 9 of the outer ring 5 causes the outer ring 5 to move upward. Is converted into a moving force in which the sliding surfaces 25, 34 of the inner ring 21 move inward along the rotational axis direction of the outer ring 5, and inward by the sliding surfaces 25, 34 of the inner ring 21, respectively. Is absorbed by the elastic force of the coil spring 35 between the sliding surfaces 25, 34 of the inner ring 21.

このとき、この内輪21の各摺動面25,34の内側への移動によって、この内輪21の各摺動面25,34が外輪５の内周部材９の各テーパ面14,15の基端側に向けて摺動する。この結果、この外輪５の上側の各テーパ面14,15と内輪21の上側の各摺動面25,34との間に段差Ｂの高さ寸法に略等しい高さ寸法の間隙Ｃが形成される。   At this time, due to the inward movement of the sliding surfaces 25 and 34 of the inner ring 21, the sliding surfaces 25 and 34 of the inner ring 21 become the proximal ends of the tapered surfaces 14 and 15 of the inner peripheral member 9 of the outer ring 5. Slide towards the side. As a result, a gap C having a height dimension substantially equal to the height dimension of the step B is formed between the tapered surfaces 14 and 15 on the upper side of the outer ring 5 and the sliding surfaces 25 and 34 on the upper side of the inner ring 21. The

さらに、この状態から段差Ｂを乗り越えた場合には、この段差Ｂを乗り越える際の外輪５の外周部材７の走行面６への外力が無くなるので、コイルスプリング35の弾性力によって、図２に示すように、内輪21の各摺動面25,34が外側に向けて移動して、この内輪21の各摺動面25,34による外輪５の各テーパ面14,15の押圧によって、この外輪５の外周部材７が下方へと移動して突出する。   Further, when overcoming the step B from this state, there is no external force on the running surface 6 of the outer peripheral member 7 of the outer ring 5 when overcoming the step B. Therefore, the elastic force of the coil spring 35 shows the force shown in FIG. As described above, the sliding surfaces 25 and 34 of the inner ring 21 move outward, and the outer ring 5 is pressed by the pressing of the tapered surfaces 14 and 15 of the outer ring 5 by the sliding surfaces 25 and 34 of the inner ring 21. The outer peripheral member 7 moves downward and protrudes.

上述したように、上記第１の実施の形態によれば、内輪21の内側部材22と外側部材31との間にコイルスプリング35を取り付けて、これら内側部材22と外側部材31との間をコイルスプリング35にて付勢させた。さらに、これら内側部材22および外側部材31それぞれの互いに対向して傾斜した各摺動面25,34のそれぞれを、外輪５の内周部材９の内側面に設けた略ハの字状の各テーパ面14,15に摺動可能に接触させて取り付けた。   As described above, according to the first embodiment, the coil spring 35 is attached between the inner member 22 and the outer member 31 of the inner ring 21, and the coil between the inner member 22 and the outer member 31 is coiled. The spring 35 was energized. Further, each of the sliding surfaces 25, 34 of the inner member 22 and the outer member 31 that are inclined to face each other is provided with an approximately C-shaped taper provided on the inner surface of the inner peripheral member 9 of the outer ring 5. It attached to the surfaces 14 and 15 so that sliding was possible.

この結果、外輪５の走行面６に加わる外力によってこの外輪５が上方に移動しようとする移動力が、外輪５の各テーパ面14,15に対する内輪21の各摺動面25,34の摺動によって、この外輪５の回転軸方向であるコイルスプリング35の軸方向に沿って各摺動面25,34が内側に向けて移動する移動力に変換される。このため、外輪５が上方に移動する移動力を、内輪21の各摺動面25,34による内側への移動によってコイルスプリング35の弾性力で受け止めることができるから、床面Ａ上の段差Ｂを滑らかに乗り越えることができる。   As a result, the moving force that the outer ring 5 tends to move upward by the external force applied to the running surface 6 of the outer ring 5 causes the sliding surfaces 25 and 34 of the inner ring 21 to slide relative to the tapered surfaces 14 and 15 of the outer ring 5. Thus, the sliding surfaces 25 and 34 are converted into moving forces that move inward along the axial direction of the coil spring 35 that is the rotational axis direction of the outer ring 5. For this reason, the moving force of the outer ring 5 moving upward can be received by the elastic force of the coil spring 35 by the inward movement of the inner ring 21 by the sliding surfaces 25, 34. Can be overcome smoothly.

同時に、内輪21の各摺動面25,34による外輪５の各テーパ面14,15に対する摺動によって、外輪５の走行面６に加わった外力を、この外輪５の回転軸方向に変換できる。このため、外輪５と内輪21との間に弾性を有するゴムなどの弾性部材を取り付ける必要がなくなる。したがって、この外輪５を径方向に沿って大きくしなくても、この外輪５の走行面６に加わる外力をコイルスプリング35の弾性力にて十分に吸収できる。よって、この外輪５の径方向に対する大きさを小さくできるから、ローラ装置１自体の径方向に対するサイズをよりコンパクト化、すなわち小型化できる。   At the same time, the external force applied to the running surface 6 of the outer ring 5 by the sliding of the sliding surfaces 25, 34 of the inner ring 21 with respect to the tapered surfaces 14, 15 of the outer ring 5 can be converted into the rotational axis direction of the outer ring 5. For this reason, it is not necessary to attach an elastic member such as rubber having elasticity between the outer ring 5 and the inner ring 21. Therefore, the external force applied to the running surface 6 of the outer ring 5 can be sufficiently absorbed by the elastic force of the coil spring 35 without enlarging the outer ring 5 along the radial direction. Therefore, since the size of the outer ring 5 in the radial direction can be reduced, the size of the roller device 1 in the radial direction can be made more compact, that is, smaller.

また、外輪５の走行面６に加わった外力を、この外輪５の同軸状に取り付けたコイルスプリング35の弾性力で吸収させた。このため、特殊な形状のスプリングやゴム部材などを用いることなく、単純な螺旋状のコイルスプリング35を使用できるから、この外輪５と内輪21との間を付勢する手段の構成を簡略にできる。   Further, the external force applied to the running surface 6 of the outer ring 5 was absorbed by the elastic force of the coil spring 35 attached coaxially to the outer ring 5. For this reason, since a simple spiral coil spring 35 can be used without using a specially shaped spring or rubber member, the configuration of the means for biasing the outer ring 5 and the inner ring 21 can be simplified. .

同時に、このコイルスプリング35の弾性力の調整のみで、外輪５の各テーパ面14,15に対する内輪21の各摺動面25,34による付勢力である荷重設定や、摺動距離であるストロークを調整できる。したがって、このコイルスプリング35を変更するだけで、外輪５の各テーパ面14,15に対する内輪21の各摺動面25,34の荷重設定やストロークの調整をより容易にできる。   At the same time, only by adjusting the elastic force of the coil spring 35, the load setting which is the urging force by the sliding surfaces 25 and 34 of the inner ring 21 against the tapered surfaces 14 and 15 of the outer ring 5 and the stroke which is the sliding distance can be set. Can be adjusted. Therefore, only by changing the coil spring 35, the load setting and stroke adjustment of the sliding surfaces 25, 34 of the inner ring 21 with respect to the tapered surfaces 14, 15 of the outer ring 5 can be made easier.

さらに、外輪５の内周部材９の内周面11における回転軸方向に沿った両端部のそれぞれにテーパ面14,15を設けるとともに、内輪21の内側部材22および外側部材31それぞれに摺動面25,34を有する摺動片部24,33を設けた。このため、外輪５の走行面６に加わる外力を、外輪５の各テーパ面14,15に対する各摺動面25,34の摺動によって、外輪５の回転軸方向に沿った両端部で分散して吸収できる。したがって、外輪５の走行面６に加わる外力を吸収する衝撃吸収機構であるダンパ機構を簡単な構成でより確実かつ強力にできる。   Further, taper surfaces 14 and 15 are provided at both ends of the inner peripheral surface 11 of the inner ring member 9 of the outer ring 5 along the rotation axis direction, and sliding surfaces are provided on the inner member 22 and the outer member 31 of the inner ring 21, respectively. Sliding piece portions 24 and 33 having 25 and 34 were provided. For this reason, the external force applied to the running surface 6 of the outer ring 5 is dispersed at both end portions along the rotation axis direction of the outer ring 5 by sliding of the sliding surfaces 25 and 34 with respect to the tapered surfaces 14 and 15 of the outer ring 5. Can be absorbed. Therefore, the damper mechanism, which is an impact absorbing mechanism that absorbs external force applied to the running surface 6 of the outer ring 5, can be made more reliable and strong with a simple configuration.

このとき、予めコイルスプリング35を軸方向に沿って縮めてテンションを掛けた状態で、このコイルスプリング35を内輪21の内側部材22と外側部材31との間に嵌合させることもできる。この場合、予め設定したコイルスプリング35の弾性力である設定荷重までは、ローラ装置１のダンパ機構が作動しなくなるが、この予め設定した設定荷重以上の荷重を受けたときにのみ、ローラ装置１のダンパ機構を作動させることができる。   At this time, the coil spring 35 can be fitted between the inner member 22 and the outer member 31 of the inner ring 21 in a state where the coil spring 35 is contracted in the axial direction in advance and tension is applied. In this case, the damper mechanism of the roller device 1 does not operate until a preset load that is a preset elastic force of the coil spring 35. However, the roller device 1 is only received when a load greater than the preset preset load is received. The damper mechanism can be operated.

さらに、このローラ装置１の内輪21の内側部材22の軸部23の基端側に係止段部26を設けたことにより、このローラ装置１のダンパ機構が作動した際に、内輪21の外側部材31の軸部32の先端部が内側部材22の軸部23の係止段部26に係止される。したがって、このローラ装置１のダンパ機構による内輪21の各摺動面25,34の移動距離、すなわちストロークを規制できるので、これら摺動面25,34が外輪５の各テーパ面14,15よりも内側に移動することにより生じ得る、内輪21に対する外輪５の径方向へのずれや歪みを簡単な構成で確実に防止できる。   Further, by providing a locking step portion 26 on the proximal end side of the shaft portion 23 of the inner member 22 of the inner ring 21 of the roller device 1, when the damper mechanism of the roller device 1 is operated, the outer side of the inner ring 21. The distal end portion of the shaft portion 32 of the member 31 is locked to the locking step portion 26 of the shaft portion 23 of the inner member 22. Therefore, since the movement distance, that is, the stroke of each sliding surface 25, 34 of the inner ring 21 by the damper mechanism of this roller device 1 can be regulated, these sliding surfaces 25, 34 are more than the respective tapered surfaces 14, 15 of the outer ring 5. A shift or distortion in the radial direction of the outer ring 5 with respect to the inner ring 21 that may occur by moving inward can be reliably prevented with a simple configuration.

なお、上記第１の実施の形態では、ローラ装置１を内輪21の内側部材22の軸部23と回転軸41との間で滑って回転させたが、図４に示す第２の実施の形態のように、ローラ装置１の内輪21と、この内輪21の内側部材22の軸部23に一端側から回転可能に内嵌合された略円筒状の回転円滑手段としての軸カラー51との間に球状の球体としてのボールベアリング52を回転可能に取り付けることもできる。この場合、この軸カラー51による内輪21の内側部材22の軸部23からの抜けを防止するために、この軸カラー51における内側部材22の他端側から突出した先端側の外周面に、抜止手段としてのＥリング53を周方向に沿って嵌合させる。   In the first embodiment, the roller device 1 is slid and rotated between the shaft portion 23 of the inner member 22 of the inner ring 21 and the rotating shaft 41. However, the second embodiment shown in FIG. As described above, between the inner ring 21 of the roller device 1 and the shaft collar 51 as a substantially cylindrical rotation smoothing means that is rotatably fitted to the shaft portion 23 of the inner member 22 of the inner ring 21 from one end side. A ball bearing 52 as a spherical sphere can be rotatably mounted. In this case, in order to prevent the shaft collar 51 from coming off from the shaft portion 23 of the inner member 22 of the inner ring 21, the shaft collar 51 is secured to the outer peripheral surface on the front end side protruding from the other end side of the inner member 22. E-rings 53 as means are fitted along the circumferential direction.

さらに、ローラ装置１の外輪５にテーパ面14,15を設けて内輪21に摺動面25,34を設けたが、この内輪21にテーパ面14,15を設けて外輪５に摺動面25,34を設けてもよい。   Further, the outer ring 5 of the roller device 1 is provided with the tapered surfaces 14 and 15 and the inner ring 21 is provided with the sliding surfaces 25 and 34. The inner ring 21 is provided with the tapered surfaces 14 and 15 and the outer ring 5 is provided with the sliding surface 25. , 34 may be provided.

また、ローラ装置１の外輪５の各テーパ面14,15および内輪21の各摺動面25,34のそれぞれをテーパ状の傾斜面としたが、これらテーパ面14,15および摺動面25,34のいずれかが傾斜していればよい。   The tapered surfaces 14 and 15 of the outer ring 5 of the roller device 1 and the sliding surfaces 25 and 34 of the inner ring 21 are tapered inclined surfaces. Any one of 34 may be inclined.

さらに、ローラ装置１の回転軸方向に沿った両端部のそれぞれにテーパ面14,15および摺動面25,34を備えた衝撃吸収手段を設けたが、このローラ装置１の回転軸方向の一端部のみに、これらテーパ面14および摺動面25を備えた衝撃吸収手段を設けても、上記各実施の形態と同様の作用効果を奏することができる。   Further, shock absorbing means having tapered surfaces 14 and 15 and sliding surfaces 25 and 34 are provided at both end portions along the rotation axis direction of the roller device 1. One end of the roller device 1 in the rotation axis direction is provided. Even if the shock absorbing means including the tapered surface 14 and the sliding surface 25 is provided only on the portion, the same effects as those of the above embodiments can be obtained.

また、床面Ａ以外の天井面や壁面などを走行するローラ装置１であってもよく、案内部材などの案内レールに対して転動可能なローラ装置１としてもよい。   Moreover, the roller apparatus 1 which drive | works a ceiling surface other than the floor surface A, a wall surface, etc. may be sufficient, and it is good also as the roller apparatus 1 which can roll with respect to guide rails, such as a guide member.

さらに、内輪21の外側部材31の軸部32の同軸状にコイルスプリング35を嵌合させて取り付けたが、これに限らず、この外側部材31の軸部32を回避させて少なくとも１つ以上のコイルスプリング35を外側部材31と内側部材22との間に取り付けてもよい。   Further, the coil spring 35 is fitted and attached coaxially with the shaft portion 32 of the outer member 31 of the inner ring 21. However, the present invention is not limited thereto, and at least one or more shaft members 32 are avoided by avoiding the shaft portion 32 of the outer member 31. The coil spring 35 may be attached between the outer member 31 and the inner member 22.

また、外輪５への衝撃を一度のみ吸収する目的のローラ装置１とする場合には、内輪21の内側部材22と外側部材31との間のコイルスプリング35などの弾性手段を省略することができる。   When the roller device 1 is intended to absorb the impact on the outer ring 5 only once, an elastic means such as a coil spring 35 between the inner member 22 and the outer member 31 of the inner ring 21 can be omitted. .

さらに、上記各実施の形態におけるローラ装置１は、要約すると、外輪５に加えられた径方向に対する衝撃を、外輪５または軸体としての内輪21に設けられた傾斜部としてのテーパ面14,15および摺動面25,34を利用する変換機構を介して、内輪21を軸方向に移動する力に変換するものである。   Furthermore, in summary, the roller device 1 in each of the above-described embodiments applies the impact in the radial direction applied to the outer ring 5 to the tapered surfaces 14 and 15 as inclined portions provided on the outer ring 5 or the inner ring 21 as the shaft body. The inner ring 21 is converted into a force that moves in the axial direction through a conversion mechanism that uses the sliding surfaces 25 and 34.

本発明の第１の実施の形態のローラ装置の一部を示す分解斜視図である。It is a disassembled perspective view which shows a part of roller apparatus of the 1st Embodiment of this invention. 同上ローラ装置にて床面を走行している状態を示す説明断面図である。It is explanatory sectional drawing which shows the state currently drive | working the floor surface by the roller apparatus same as the above. 同上ローラ装置にて段差を乗り越えている状態を示す説明断面図である。It is explanatory sectional drawing which shows the state which has overtaken the level | step difference with the roller apparatus same as the above. 本発明のローラ装置の第２の実施の形態を示す説明断面図である。It is explanatory sectional drawing which shows 2nd Embodiment of the roller apparatus of this invention.

符号の説明Explanation of symbols

１ ローラ装置
５ 外輪
14,15 傾斜部としてのテーパ面
21 軸体としての内輪
22 摺動部材としての内側部材
25,34 摺動部としての摺動面
31 摺動部材としての外側部材
35 付勢手段としてのコイルスプリング 1 Roller device 5 Outer ring
14,15 Tapered surface as inclined part
21 Inner ring as shaft
22 Inner member as sliding member
25, 34 Sliding surface as sliding part
31 Outer member as sliding member
35 Coil spring as biasing means

Claims (3)

略円筒状の外輪と、
この外輪の内側に取り付けられる軸体と、
この軸体を前記外輪に付勢する付勢手段とを具備し、
前記外輪の内周部および前記軸体の外周部のいずれか一方には、これら外輪および軸体のいずれか一方の周方向に沿って、かつこれら外輪および軸体のいずれか一方の回転軸方向に向けて傾斜した傾斜部が設けられ、
前記外輪の内周部および前記軸体の外周部のいずれか他方には、前記傾斜部の傾斜方向に沿って摺動する摺動部が設けられ、
前記付勢手段は、前記摺動部を前記傾斜部に付勢する
ことを特徴としたローラ装置。 A substantially cylindrical outer ring,
A shaft attached to the inside of the outer ring,
Biasing means for biasing the shaft body to the outer ring,
Either one of the inner ring portion of the outer ring and the outer ring portion of the shaft body is provided along the circumferential direction of either the outer ring or the shaft body, and the rotational axis direction of either the outer ring or the shaft body. An inclined part inclined toward the
A sliding portion that slides along the inclination direction of the inclined portion is provided on the other of the inner peripheral portion of the outer ring and the outer peripheral portion of the shaft body,
The urging means urges the sliding portion to the inclined portion. 付勢手段は、外輪および軸体の回転軸方向の同軸状に取り付けられたコイルスプリングである
ことを特徴とした請求項１記載のローラ装置。 The roller device according to claim 1, wherein the urging means is a coil spring attached coaxially in the rotation axis direction of the outer ring and the shaft body. 傾斜部は、外輪の内周部における回転軸方向に沿った両端部のそれぞれに設けられ、
軸体は、前記外輪のそれぞれの傾斜部を摺動する一対の摺動部材を備えた
ことを特徴とした請求項１または２記載のローラ装置。 The inclined portion is provided at each of both end portions along the rotation axis direction in the inner peripheral portion of the outer ring,
The roller device according to claim 1, wherein the shaft body includes a pair of sliding members that slide on the respective inclined portions of the outer ring.
JP2003275629A 2003-07-16 2003-07-16 Roller device Expired - Fee Related JP4323887B2 (en)

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