JPS60135304A - Assembled structure of caster - Google Patents

Assembled structure of caster

Info

Publication number
JPS60135304A
JPS60135304A JP24361383A JP24361383A JPS60135304A JP S60135304 A JPS60135304 A JP S60135304A JP 24361383 A JP24361383 A JP 24361383A JP 24361383 A JP24361383 A JP 24361383A JP S60135304 A JPS60135304 A JP S60135304A
Authority
JP
Japan
Prior art keywords
support
mounting shaft
supporting
block
yoke
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP24361383A
Other languages
Japanese (ja)
Inventor
Nobufusa Saito
斉藤 信房
Hidefumi Kobayashi
英文 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANSHIN GOMME KOGYOSHO KK
Original Assignee
NANSHIN GOMME KOGYOSHO KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NANSHIN GOMME KOGYOSHO KK filed Critical NANSHIN GOMME KOGYOSHO KK
Priority to JP24361383A priority Critical patent/JPS60135304A/en
Publication of JPS60135304A publication Critical patent/JPS60135304A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60BVEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00Castors in general; Anti-clogging castors
    • B60B33/0002Castors in general; Anti-clogging castors assembling to the object, e.g. furniture

Abstract

PURPOSE:To raise precision of the supporting part of a fixing shaft, and to set ball bearings always concentrically with the center of the fixing shaft, by forming a supporting yoke in an integrated one body by die casting. CONSTITUTION:A die cast supporting yoke 20 is constructed with a supporting block 21 and a pair of supporting plates 22, 22, which are extended diagonally from both lower sides of the block 21. In the center of the block 21, a fixing hole 23 is formed as it pierces through the upper part/the lower part of the block 21, and in this fixing hole 23, radial ball bearings 24, 24 are inserted with a spacer 24a between. Through the inner rings of the ball bearings 24, 24, a fixing shaft 25, the upper end of which is fixed to the side to be fixed, is inserted, and this fixing shaft 25 is supported with the upper end of the supporting yoke 20, as it can rotate freely. As the supporting yoke 20 is formed in an integrated one body by die casting, the precision of the supporting part of the fixing shaft 25 is raised, comparing with a press-processed supporting yoke.

Description

【発明の詳細な説明】 この発明は、取付軸のガタがなく、しかも部品点数の削
減を図れるようにしたキャスターの組立構造に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a caster assembly structure in which there is no play in the mounting shaft and the number of parts can be reduced.

車椅子等に用いられている従来のキャスターは、一般に
第1図に示す構造となっている。
Conventional casters used for wheelchairs and the like generally have a structure as shown in FIG.

このキャスターは、下端に車輪2を回転自在に軸受した
支持ヨーク1と、この支持ヨーク1の上端に垂直方向に
装着された取付軸3とを備えている。
This caster includes a support yoke 1 with a wheel 2 rotatably supported at its lower end, and a mounting shaft 3 vertically mounted on the upper end of the support yoke 1.

支持ヨーク1の上端において、取付軸3の周囲には下皿
4.上皿5を介してボールベアリング6が、また下面に
はボールレース7および下皿8を介してボールベアリン
グ9が配置されている。
At the upper end of the support yoke 1, a lower plate 4. A ball bearing 6 is disposed on the lower surface via an upper plate 5, and a ball bearing 9 is arranged on the lower surface via a ball race 7 and a lower plate 8.

また、取付軸3の上部側にはフランジ部3aが形成され
、下端側にはナツト10が装着され、これらによって上
記各部材を保持し、取付軸3をヨ一り1上に回転自在に
支持している。
Further, a flange portion 3a is formed on the upper side of the mounting shaft 3, and a nut 10 is attached to the lower end side, and these members hold the above-mentioned members and support the mounting shaft 3 so as to be rotatable on the yoke 1. are doing.

なお、図中符号11はフランジ部3aと上皿5との間に
介挿された防塵カバーである。
Note that the reference numeral 11 in the figure is a dustproof cover inserted between the flange portion 3a and the upper plate 5.

以上の如き構成において、支持ヨーク1と、上皿5;下
皿4,8はプレス成形によって形成されるのが一般であ
る。
In the above configuration, the support yoke 1, the upper plate 5, and the lower plates 4, 8 are generally formed by press molding.

しかし、このようにプレス成形によって各部材を製造す
ると、どうしても加工精度が低くなり、これにともない
以下の問題点を生ずる。
However, when each member is manufactured by press molding in this manner, the processing accuracy inevitably becomes low, and the following problems occur accordingly.

つまり、キャスターを精度よく直進、旋回させるために
はボールを取付軸のセンターに対し、それぞれ同心にな
るように配置しなければならない。
In other words, in order for the caster to move straight and turn with precision, the balls must be arranged concentrically with respect to the center of the mounting shaft.

ところが、実際にはレース面の加工公差により取付軸の
センターに対してボールが同心状態に精度良く配置され
ず、そのため取イ」軸にガタが生じ、キャスターの直進
性が損われ、キャスターが蛇行づるという問題がある。
However, in reality, due to machining tolerances on the race surface, the balls are not placed concentrically and accurately with respect to the center of the mounting shaft, which causes play in the shaft, impairing the straightness of the caster, and causing the caster to meander. There is a problem with the problem.

また、支持ヨーク1そのものもプレス成形体によって成
形されているために、上述の如き皿゛■ボールレース等
を必要とし、必然的に部品点数が増え、組立も面倒なも
のとなる。
Further, since the support yoke 1 itself is formed by a press molding, it requires the above-mentioned discs, ball races, etc., which inevitably increases the number of parts and makes assembly complicated.

この発明は、以上の問題を解決すべくなされたもので、
取付軸にガタが生ずることがなく、直進性を向上すると
ともに、部品点数を削減し、組立を簡単に行なえるよう
にすることを目的とする。
This invention was made to solve the above problems.
The purpose of the present invention is to prevent rattling from occurring in the mounting shaft, improve straightness, reduce the number of parts, and facilitate assembly.

上記目的を達成するために、本発明では、被数イ1側に
装着される取付軸を支持する支持ブロック、および車輪
を回転自在に支持する一対の支持プレートをダイキャス
トにより一体成形した支持ヨークと、前記支持ブロック
の上下を貫通して形成された取付孔に嵌合され、かつ取
付軸を回転自在に軸受する上下一対のラジアルボールベ
アリングと、支持ブロックの底面にあって、取付軸の下
端に固着された下部ベアリングホルダと、支持ブロック
の上面を覆うとともに、取付軸の外周に一体に装着され
た上部ベアリングホルダ兼用のカバーとを備えたことを
特徴とする。
In order to achieve the above object, the present invention provides a support yoke that is integrally formed by die-casting with a support block that supports the mounting shaft mounted on the number 1 side and a pair of support plates that rotatably support the wheels. a pair of upper and lower radial ball bearings that are fitted into mounting holes formed through the upper and lower portions of the support block and rotatably support the mounting shaft; and a lower end of the mounting shaft located on the bottom surface of the support block. The present invention is characterized by comprising a lower bearing holder fixed to the support block, and a cover that covers the upper surface of the support block and also serves as the upper bearing holder, which is integrally attached to the outer periphery of the mounting shaft.

以下本発明の一実施例を第2図〜第4図を用いて詳細に
説明する。
An embodiment of the present invention will be described in detail below with reference to FIGS. 2 to 4.

図において、符号2Oはダイキャスト製の支持ヨークで
あり、この支持ヨーク20は支持ブロック21と、この
支持ブロック21の下部両側部に斜めに延長された一対
の支持プレート22.22とからなっている。
In the figure, reference numeral 2O denotes a die-cast support yoke, and this support yoke 20 consists of a support block 21 and a pair of support plates 22 and 22 extending diagonally on both sides of the lower part of this support block 21. There is.

支持ブロック21の中心には上下を貫通して取付穴23
が形成されており、またその中央部には段部23aが形
成、されている。
At the center of the support block 21 is a mounting hole 23 that passes through the top and bottom.
is formed, and a stepped portion 23a is formed at the center thereof.

この取付穴23にはその上下よりスペーサ24aを介し
てラジアルボールベアリング24.24が嵌合される。
Radial ball bearings 24, 24 are fitted into this mounting hole 23 from above and below via spacers 24a.

各ボールベアリング24は段部23aに突きあたり、正
規の嵌合位置に位置決めされる。
Each ball bearing 24 abuts against the stepped portion 23a and is positioned at a normal fitting position.

各ボールベアリング24の内輪には上端を被取付側に固
定される取付軸25が挿通される。
A mounting shaft 25 whose upper end is fixed to the mounted side is inserted into the inner ring of each ball bearing 24.

取付軸25の下部突出端に下部ベアリングホルダ26を
嵌合し、かつその下部にナツト27を取り付けることで
下部ベアリングホルダ26は取付軸25の下端に支持さ
れる。
The lower bearing holder 26 is supported by the lower end of the mounting shaft 25 by fitting the lower bearing holder 26 into the lower protruding end of the mounting shaft 25 and attaching the nut 27 to the lower part thereof.

一方、支持ブロック21の上面側には、ベアリングホル
ダ兼用の防塵カバー28が嵌合され、その上面を取(す
軸25の上部に一体化されたフランジ部25aによって
押えることにより各ボールベアリング24の外輪は下部
ベアリングホルダ26とカバー28間に挟持固定され、
正規の位置に押付(プられる。
On the other hand, a dustproof cover 28 which also serves as a bearing holder is fitted onto the upper surface of the support block 21, and the upper surface of the dustproof cover 28 is pressed by a flange portion 25a integrated with the upper part of the shaft 25. The outer ring is clamped and fixed between the lower bearing holder 26 and the cover 28,
Pushed (pushed) into the correct position.

以上の構成により、取付軸25は支持ヨーク20の上端
に回転自在に支持される。
With the above configuration, the mounting shaft 25 is rotatably supported at the upper end of the support yoke 20.

また、支持プレート22の先端には車輪29が回転自在
に支持されている。
Furthermore, a wheel 29 is rotatably supported at the tip of the support plate 22.

この車輪29の支持構造は、第3図に詳細に示されてい
る。
The support structure for this wheel 29 is shown in detail in FIG.

つまり、支持プレート22の先端部間を貫通して固定さ
れた支持軸30の外周に一対のスペーサ−31、’31
を介してベアリング32.32を挿通し、このベアリン
グ32の外周部に車輪29の中心孔を挿通することによ
って車輪29を支持プレート22の先端に回転自在に支
持している。
That is, a pair of spacers 31 and '31 are attached to the outer periphery of the support shaft 30 that is fixed to the support shaft 30 passing through the tip portions of the support plate 22.
The wheel 29 is rotatably supported at the tip of the support plate 22 by inserting a bearing 32.32 through the bearing 32 and inserting the center hole of the wheel 29 into the outer circumference of the bearing 32.

なお、前記支持ヨーク2oはダイキャスト加工によって
成形されているために、その取付穴23の加工精度は高
く、したがってこれに保持される各ベアリング24間の
平行度も極めて高い。したがって、これに回転自在に支
持される取付軸25は芯ぶれが全くないものとなる。
Note that since the support yoke 2o is formed by die-casting, the machining accuracy of the mounting holes 23 is high, and therefore the parallelism between the bearings 24 held therein is also extremely high. Therefore, the mounting shaft 25 rotatably supported thereon has no center runout.

以上説明したように、この発明に係るキャスタの組゛立
構造にあっては、前述の如く特に支持ヨークをダイキャ
ストにより一体成形することで、従来のプレス加工によ
るものに比して取付軸の支持部分の精度を各段に向上で
き、取付軸のセンターに対し、ボールベアリングを常に
同心状態に配置することができる。またこれによってキ
ャスタの旋回性能が向上すると同時に取付軸にガタを生
ずることがなくなり、直進性が向上する。したがって、
車椅子等にこのキャスタを適用した場合には安定した走
行性能が得られる。
As explained above, in the assembly structure of the caster according to the present invention, the support yoke is particularly integrally molded by die casting as described above, so that the mounting shaft can be easily fixed compared to the conventional press work. The precision of the support part can be improved at each step, and the ball bearing can always be placed concentrically with the center of the mounting shaft. Moreover, this improves the turning performance of the casters, and at the same time eliminates play in the mounting shaft, improving straight-line performance. therefore,
When this caster is applied to a wheelchair or the like, stable running performance can be obtained.

また、本発明では、ダイキャスト成形時において取付穴
を一体に形成できるために、従来のプレス加工に比べて
取付軸の支持部分の部品点数が大幅に削減でき、組立性
も良好となる。
Furthermore, in the present invention, since the mounting holes can be integrally formed during die-casting, the number of parts for the support portion of the mounting shaft can be significantly reduced compared to conventional press working, and the ease of assembly is also improved.

さらに本発明では、従来のプレス成形体からなる支持ヨ
ークに比して外観がより一部スマートで、意匠的な性能
も大幅に向上し、高級感のあるキャスターとなる。
Furthermore, the present invention provides a caster with a more luxurious appearance, with a sleeker appearance and significantly improved design performance, compared to a support yoke made of a conventional press-formed body.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来の車椅子用キャスターの縦断面正面図、第
2図は本発明に係るキャスターの一部断面側面図、第3
図は第2図の■−■轢断面図、第4図は同キャスターの
分解斜視図である。 20・・・支持ヨーク 21・・・支持ブロック 22・・・支持プレート 23・・・取付穴 24・・・ボールベアリング 25・・・取付軸 28・・・カバー 特許出願人 株式会社南進ゴム工業所 第1図
FIG. 1 is a longitudinal cross-sectional front view of a conventional wheelchair caster, FIG. 2 is a partially cross-sectional side view of a caster according to the present invention, and FIG.
The figure is a sectional view taken along the line ■--■ in FIG. 2, and FIG. 4 is an exploded perspective view of the same caster. 20...Support yoke 21...Support block 22...Support plate 23...Mounting hole 24...Ball bearing 25...Mounting shaft 28...Cover Patent applicant Nanshin Rubber Industries Co., Ltd. Figure 1

Claims (1)

【特許請求の範囲】[Claims] (1)被取付側に装着される取付軸を支持する支持ブロ
ックおよび車輪を回転自在。に支持する一対の支持プレ
ートをダイキャストにより一体成形した支持ヨークと、
前記支持ブロックの上下を貨通して形成された取付孔に
嵌合され、かつ取付軸を回転自在に軸受する上下一対の
ラジアルボールベアリングと、支持ブロックの底面にあ
って、取付軸の下端に固着された下部ベアリングホルダ
と、支持ブロックの上面を覆うとともに、取付軸の外周
に一体に装着された上部ベアリングホルダ兼用のカバー
とを備えたことを特徴とするキャスターの組立構造。
(1) The support block and wheels that support the mounting shaft mounted on the mounted side can be rotated freely. A support yoke integrally molded by die-casting with a pair of support plates that support the
a pair of upper and lower radial ball bearings that are fitted into mounting holes formed by passing the upper and lower parts of the support block and rotatably support the mounting shaft; and a pair of upper and lower radial ball bearings that are fixed to the lower end of the mounting shaft on the bottom surface of the support block. A caster assembly structure characterized by comprising a lower bearing holder with a lower bearing holder, and a cover that covers the upper surface of a support block and also serves as an upper bearing holder, which is integrally attached to the outer periphery of a mounting shaft.
JP24361383A 1983-12-22 1983-12-22 Assembled structure of caster Pending JPS60135304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24361383A JPS60135304A (en) 1983-12-22 1983-12-22 Assembled structure of caster

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24361383A JPS60135304A (en) 1983-12-22 1983-12-22 Assembled structure of caster

Publications (1)

Publication Number Publication Date
JPS60135304A true JPS60135304A (en) 1985-07-18

Family

ID=17106419

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24361383A Pending JPS60135304A (en) 1983-12-22 1983-12-22 Assembled structure of caster

Country Status (1)

Country Link
JP (1) JPS60135304A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0324902U (en) * 1989-07-19 1991-03-14
EP0616909A1 (en) * 1993-03-26 1994-09-28 Haco-Rollen-Vertrieb GmbH & Co. KG Castor wheel
JPH10217708A (en) * 1997-02-03 1998-08-18 Takagi Sansho:Kk Wheel journalling structure for caster
JP2000185506A (en) * 1998-12-24 2000-07-04 Takagi Sansho:Kk Dust-proof structure of catser wheel
US6463624B1 (en) * 2001-05-08 2002-10-15 Chi-Hsiang Su Joint structure of a wheel bearing
US7284299B2 (en) * 2005-03-08 2007-10-23 Rubbermaid Commercial Products Llp Caster

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5141734U (en) * 1974-09-24 1976-03-27
JPS58126203A (en) * 1982-01-22 1983-07-27 Nanshin Gomme Kogyosho:Kk Fitting shaft support structure of caster

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5141734U (en) * 1974-09-24 1976-03-27
JPS58126203A (en) * 1982-01-22 1983-07-27 Nanshin Gomme Kogyosho:Kk Fitting shaft support structure of caster

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0324902U (en) * 1989-07-19 1991-03-14
EP0616909A1 (en) * 1993-03-26 1994-09-28 Haco-Rollen-Vertrieb GmbH & Co. KG Castor wheel
JPH10217708A (en) * 1997-02-03 1998-08-18 Takagi Sansho:Kk Wheel journalling structure for caster
JP2000185506A (en) * 1998-12-24 2000-07-04 Takagi Sansho:Kk Dust-proof structure of catser wheel
US6463624B1 (en) * 2001-05-08 2002-10-15 Chi-Hsiang Su Joint structure of a wheel bearing
US7284299B2 (en) * 2005-03-08 2007-10-23 Rubbermaid Commercial Products Llp Caster

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