JP3442034B2 - caster - Google Patents

caster

Info

Publication number
JP3442034B2
JP3442034B2 JP2000187836A JP2000187836A JP3442034B2 JP 3442034 B2 JP3442034 B2 JP 3442034B2 JP 2000187836 A JP2000187836 A JP 2000187836A JP 2000187836 A JP2000187836 A JP 2000187836A JP 3442034 B2 JP3442034 B2 JP 3442034B2
Authority
JP
Japan
Prior art keywords
yoke
recess
bearing
pedestal
caster
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.)
Expired - Fee Related
Application number
JP2000187836A
Other languages
Japanese (ja)
Other versions
JP2002002209A (en
Inventor
衛 雄島
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.)
Yuei Caster Co Ltd
Original Assignee
Yuei Caster Co Ltd
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 Yuei Caster Co Ltd filed Critical Yuei Caster Co Ltd
Priority to JP2000187836A priority Critical patent/JP3442034B2/en
Publication of JP2002002209A publication Critical patent/JP2002002209A/en
Application granted granted Critical
Publication of JP3442034B2 publication Critical patent/JP3442034B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/067Fixing them in a housing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00Articles relating to transporting
    • F16C2326/01Parts of vehicles in general
    • F16C2326/02Wheel hubs or castors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063Fixing them on the shaft

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、台車等の下部に設
置されるキャスターに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caster installed in a lower portion of a truck or the like.

【0002】[0002]

【従来の技術】病院や、24時間営業のコンビニエンス
ストアー等での夜間の荷物の搬入等、静音性が要求され
る分野では、キャスターの騒音対策を行う必要がある。
そのため、車輪を回転自在に保持するヨークを、台座に
対して旋回軸を中心に回転可能に保持する際に、旋回軸
とヨークとの間に玉軸受を介在させることが行われてい
る。すなわち、特開平11−245607号公報に記載
のキャスターが知られている。
2. Description of the Related Art In fields where quietness is required, such as when carrying luggage at night in hospitals and convenience stores that are open 24 hours, it is necessary to take measures against noise from casters.
Therefore, when the yoke that holds the wheel rotatably is held rotatably around the turning shaft with respect to the pedestal, a ball bearing is interposed between the turning shaft and the yoke. That is, the casters described in JP-A No. 11-245607 are known.

【0003】この公報に記載のキャスターは、図9に示
すように、台座A及び玉軸受Cの内輪を旋回軸Dに固着
し、玉軸受Cの外輪に固着した軸受ケースEに、ヨーク
Bの上板b1を固着することにより、前記台座Aの下側
に、玉軸受Cを介して、ヨークの上板b1を回動自在に
取り付けたものとしている。
In the caster described in this publication, as shown in FIG. 9, the inner ring of the pedestal A and the ball bearing C is fixed to the swivel axis D, and the bearing case E fixed to the outer ring of the ball bearing C is attached to the yoke B. By fixing the upper plate b1, the upper plate b1 of the yoke is rotatably attached to the lower side of the pedestal A via the ball bearing C.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、従来の
構成では、ヨークの上板に玉軸受を固定するために、軸
受ケースを介して行っていた。すなわち、軸受ケースは
略筒状とされ、その周側壁は、内周側に開口した略コ字
形状溝を形成するよう屈曲されているので、その略コ字
形状溝にて軸受の外輪を抱きかかえるように保持してい
た。そして、軸受ケースは、その上端部が外周側に折り
返されており、その折り返し部でヨークの上板を挟み込
んで、ヨークに固定されていた。
However, in the conventional structure, the ball bearing is fixed to the upper plate of the yoke through the bearing case. That is, the bearing case has a substantially cylindrical shape, and its peripheral side wall is bent so as to form a substantially U-shaped groove open to the inner peripheral side, so that the substantially U-shaped groove holds the outer ring of the bearing. I was holding it up. The upper end portion of the bearing case is folded back to the outer peripheral side, and the folded back portion sandwiches the upper plate of the yoke and is fixed to the yoke.

【0005】このように、従来の構成では、ヨークの上
板に玉軸受を取り付けるために、ヨークとは別体の軸受
ケースが必要であった。よって、部品点数が多くなると
共に、各部品の加工やそれら両部品の組付けに手間と費
用を要するものであった。また、ヨークと軸受ケースと
が別体であったので、両部材の取り付けを正確に行わな
ければ、ガタ付きを生じるおそれもあった。
As described above, in the conventional structure, in order to mount the ball bearing on the upper plate of the yoke, a bearing case separate from the yoke is required. Therefore, the number of parts is increased, and it takes time and money to process each part and assemble both parts. Moreover, since the yoke and the bearing case are separate bodies, there is a risk of rattling unless both members are properly attached.

【0006】本発明は、上記事情に鑑みてなされたもの
であり、その主たる目的は、ヨーク自体に直接的に軸受
を保持することで、部品点数の軽減と、製作の労力とコ
ストの低減、及びより一層品質の高い静音性の優れたキ
ャスターを提供することにある。
The present invention has been made in view of the above circumstances, and its main purpose is to hold the bearing directly on the yoke itself, thereby reducing the number of parts and the labor and cost of manufacturing. Another object is to provide casters with higher quality and lower noise.

【0007】[0007]

【課題を解決するための手段】上記目的を達成するため
に、本発明のキャスターは、プレス成形品のヨークに形
成された凹部に、軸受が収容され、凹部の外周部がかし
められて、軸受の外輪がヨークに取り付けられ、軸受の
内輪に旋回軸が取り付けられて、この旋回軸を中心とし
て、ヨークが台座に対して回転可能とされていることを
特徴とする。
In order to achieve the above object, according to the caster of the present invention, a bearing is accommodated in a recess formed in a yoke of a press-molded product, and the outer peripheral portion of the recess is caulked to form a bearing. The outer ring is attached to the yoke, the swivel shaft is attached to the inner ring of the bearing, and the yoke is rotatable about the swivel axis with respect to the pedestal.

【0008】より具体的には、例えば以下の要素を備え
たキャスターである。 (1)下方に向けて二股分かれすると共に、二股分かれ
することで形成される左右の支持片の上端部同士を連結
する中央片に、この中央片に対し略垂直に略円筒状の凹
部が、その凹部の底の穴の周囲に底壁を有して、一体的
に形成されたプレス成形品のヨーク。 (2)前記ヨークの左右の支持片間に、回転自在に保持
される車輪。 (3)前記ヨークの凹部に収容されて、前記凹部の外周
において、前記凹部の周側壁と前記中央片との角部
かしめられて、そのかしめ部と凹部の底壁の間で、ヨー
クに外輪が固定される軸受。 (4)この軸受の内輪に固定される旋回軸を介して、前
記ヨークが回転可能に取り付けられる台座。
More specifically, it is a caster having the following elements, for example. (1) A central cylindrical piece that bifurcates downward and connects upper end portions of the left and right support pieces formed by bifurcating is provided with a substantially cylindrical recess substantially perpendicular to the central piece . A press-formed yoke integrally formed with a bottom wall around the hole at the bottom of the recess . (2) A wheel rotatably held between the left and right support pieces of the yoke. (3) The yoke is housed in the recess of the yoke, the corners of the peripheral side wall of the recess and the central piece are crimped on the outer peripheral portion of the recess , and the yoke is provided between the crimping portion and the bottom wall of the recess. The outer ring is fixed to the bearing. (4) A pedestal to which the yoke is rotatably attached via a swivel shaft fixed to the inner ring of the bearing.

【0009】なお、好ましくは、台座と、この台座に対
し旋回軸を中心に回転可能に取り付けられるヨークと、
このヨークに回転自在に取り付けられる車輪とを備えた
キャスターであって、ヨークは、鋼板がプレス成形され
て形成され、その上部中央片に、軸受が収容される略円
筒状の凹部が、その凹部の底の穴の周囲に底壁を有し
て、中央片に対し略垂直に下方に凹んで形成されてお
り、その凹部に配置される軸受は、凹部の上部開口の外
周部において、前記凹部の周側壁と前記中央片との角部
がかしめられることで、そのかしめ部と凹部の底壁の間
で、外輪をヨークに固定され、台座を貫通して軸受の内
輪に嵌められる旋回軸は、径方向外側に突出した鍔部等
で台座の上面に対し位置決めされた状態で、下端部をか
しめ或いはネジ止め等されて、そのかしめ部ないしネジ
止め部等と前記鍔部等との間で内輪を保持して固定する
ことを特徴とするキャスターである。
It is preferable that a pedestal and a yoke rotatably attached to the pedestal about a turning axis be provided.
A caster comprising a wheel rotatably mounted on the yoke, yoke, steel plate is formed by press forming, in its upper center piece, a substantially cylindrical recess in which the bearing is housed, the recess Has a bottom wall around the bottom hole
And is formed to be recessed downward substantially perpendicularly to the center piece, and the bearing arranged in the recess has a corner portion between the peripheral side wall of the recess and the center piece in the outer peripheral portion of the upper opening of the recess. br /> is crimped so that it is between the crimped portion and the bottom wall of the recess.
The outer ring is fixed to the yoke, and the swivel shaft, which penetrates the pedestal and is fitted into the inner ring of the bearing, is caulked at the lower end while being positioned with respect to the upper surface of the pedestal by the flange portion protruding outward in the radial direction. A caster characterized by being screwed or the like to hold and fix the inner ring between the caulked portion or the screwed portion or the like and the collar portion or the like.

【0010】[0010]

【発明の実施の形態】以下、本発明のキャスターについ
て、更に詳細に説明する。図1から図6は、本発明のキ
ャスター1の一実施例の製作過程を時系列に示す図であ
り、図6がその組立完成状態の斜視図である。
BEST MODE FOR CARRYING OUT THE INVENTION The caster of the present invention will be described in more detail below. 1 to 6 are views showing the manufacturing process of one embodiment of the caster 1 of the present invention in time series, and FIG. 6 is a perspective view of the completed assembly state.

【0011】この実施例のキャスター1は、図6に示す
ように、被取付体(台車本体等)に取り付けられる台座
2と、この台座2に対して旋回自在に設けられるヨーク
3と、このヨーク3の二股分かれした左右支持片32,
32間に回動自在に保持される車輪4とを備えて構成さ
れる。
As shown in FIG. 6, the caster 1 of this embodiment has a pedestal 2 mounted on a body to be mounted (a dolly body, etc.), a yoke 3 which is rotatable with respect to the pedestal 2, and a yoke 3. Left and right support pieces 32,
And a wheel 4 that is rotatably held between 32.

【0012】この実施例の台座2は、略矩形板状に形成
され、その四隅部には、それぞれ上下方向に貫通して取
付穴21,21…が形成されている。この取付穴21
は、キャスター1を前記被取付体に取り付ける際に利用
されるものである。
The pedestal 2 of this embodiment is formed in a substantially rectangular plate shape, and mounting holes 21, 21 ... Are formed at four corners of the pedestal 2 so as to vertically penetrate therethrough. This mounting hole 21
Is used when the caster 1 is attached to the attached body.

【0013】台座2の下面に取り付けられるヨーク3
は、図1に示すように、下方に開放した下向き略コ字形
状に屈曲形成されている。すなわち、ヨーク3は、略水
平状態に配置される中央片31の左右両端部に、板状の
支持片32,32が、中央片31に対し略垂直下方に延
びて一体形成されている。
A yoke 3 attached to the lower surface of the base 2.
As shown in FIG. 1, is formed so as to be bent downward in a substantially U-shape. That is, in the yoke 3, plate-shaped support pieces 32, 32 are integrally formed on both left and right ends of the central piece 31 arranged in a substantially horizontal state so as to extend substantially vertically downward with respect to the central piece 31.

【0014】ヨーク3の中央片31には、略円筒状部3
1aが形成されており、その略円筒状部31aの中央部
には、略円筒形状の凹部33が下方に凹んで形成されて
いる。凹部33の底壁33aの中央部には、凹部33の
周側壁の内径よりも小径の穴33bが上下方向に貫通し
て形成されている。
The central piece 31 of the yoke 3 has a substantially cylindrical portion 3
1a is formed, and a substantially cylindrical recess 33 is formed at the center of the substantially cylindrical portion 31a so as to be recessed downward. A hole 33b having a diameter smaller than the inner diameter of the peripheral side wall of the recess 33 is formed in the central portion of the bottom wall 33a of the recess 33 so as to vertically penetrate therethrough.

【0015】ところで、この実施例の台座2とヨーク3
は、それぞれ鋼板がプレス成形されて形成されている。
例えば、ヨーク3は、略ブーメラン形状に打ち抜かれた
鋼板が、略コ字形状に屈曲されて左右支持片32,32
が形成されると共に、その左右の支持片32,32間を
連結する中央片31の中央部に前記凹部33が絞り形成
された形状に、プレス成形品にて一体的に形成されてい
る。
By the way, the base 2 and the yoke 3 of this embodiment
Are each formed by press forming a steel plate.
For example, in the yoke 3, a steel plate punched out into a substantially boomerang shape is bent into a substantially U shape so that the left and right support pieces 32, 32 are formed.
Is formed, and the recessed portion 33 is formed in a central portion of the central piece 31 that connects the left and right support pieces 32, 32, and is integrally formed by a press-molded product.

【0016】ヨーク3の凹部33には、図1及び図2に
示すように、軸受7が嵌合されて収容される。軸受7
は、略円筒状の内輪71と外輪72とが転動体73を介
して回転自在に構成されたものであり、本実施例では玉
軸受、特に深溝玉軸受が好適に使用される。
As shown in FIGS. 1 and 2, the bearing 7 is fitted and accommodated in the recess 33 of the yoke 3. Bearing 7
In the embodiment, a substantially cylindrical inner ring 71 and an outer ring 72 are rotatably arranged via rolling elements 73. In this embodiment, ball bearings, particularly deep groove ball bearings are preferably used.

【0017】ヨーク3の凹部33に軸受7を収容した状
態では、図2に示すように、凹部33の底の穴33bの
周囲の底壁33aに、軸受7の外輪72の下端面が当接
されて保持される。また、凹部33へ軸受7を収容した
状態では、軸受7の上端面が、凹部33の上部開口より
も僅かに下方に凹んだ状態で配置される。
When the bearing 7 is housed in the recess 33 of the yoke 3, the lower end surface of the outer ring 72 of the bearing 7 contacts the bottom wall 33a around the hole 33b at the bottom of the recess 33, as shown in FIG. Is retained. Further, when the bearing 7 is housed in the recess 33, the upper end surface of the bearing 7 is arranged so as to be recessed slightly below the upper opening of the recess 33.

【0018】よって、ヨーク3の凹部33に軸受7を収
容した状態で、凹部33の上部開口外周部をかしめるこ
とができる。凹部33の上部開口外周部をかしめること
で、図3に示すように、凹部33の上部開口の内径を僅
かに狭めて、凹部33の底壁33aとかしめ部33cと
の間で、軸受7の外輪72を挟み込んで、ヨーク3に軸
受7を一体的に固定することができる。
Therefore, with the bearing 7 housed in the recess 33 of the yoke 3, the outer peripheral portion of the upper opening of the recess 33 can be caulked. By caulking the upper opening outer peripheral portion of the recess 33, as shown in FIG. 3, the inner diameter of the upper opening of the recess 33 is slightly narrowed, and the bearing 7 is interposed between the bottom wall 33a of the recess 33 and the caulking portion 33c. The bearing 7 can be integrally fixed to the yoke 3 by sandwiching the outer ring 72.

【0019】このようにして軸受7が保持されたヨーク
3は、旋回軸6を介して台座2に取り付けられる。すな
わち、まず図4に示すように、ヨーク3の中央片31
(31a)の上部に台座2を重ね合わせるようにして配
置して、台座2の中央部に形成された穴22を介して、
旋回軸6を軸受7の穴(内輪71の内径)に挿し込むの
である。なお、台座2は、前記穴22の周囲が円形状に
僅かに下方に凹んだ形状とされており、その凹み部23
の下端面が軸受7の内輪71の上端面に当接された状態
に配置される。
The yoke 3 holding the bearing 7 in this manner is attached to the pedestal 2 via the turning shaft 6. That is, first, as shown in FIG. 4, the central piece 31 of the yoke 3 is
The pedestal 2 is arranged so as to overlap with the upper part of (31a), and through the hole 22 formed in the central portion of the pedestal 2,
The turning shaft 6 is inserted into the hole of the bearing 7 (inner diameter of the inner ring 71). The pedestal 2 has a shape in which the periphery of the hole 22 is circularly slightly recessed downward, and the recessed portion 23 is formed.
The lower end surface of the bearing 7 is arranged in contact with the upper end surface of the inner ring 71 of the bearing 7.

【0020】そして、その状態で、図5に示すように、
旋回軸6の下端部がかしめられる。ところで、この実施
例の旋回軸6は、上端部に径方向外側(外周側)に突出
した頭部(鍔部)61が形成されており、この頭部61
が前記台座2の凹み部23に収納されて取り付けられ
る。旋回軸6の下端部をかしめると、旋回軸6の頭部6
1とかしめ部62との間で、軸受7の内輪71が台座2
を介して挟み込まれる。そして、台座2に対して旋回軸
6を介して軸受7の内輪71が固定されることになる。
これにより、旋回軸6を中心として、台座2に対しヨー
ク3が軸受7を介して回動自在となる。
Then, in that state, as shown in FIG.
The lower end of the swivel shaft 6 is crimped. By the way, in the swivel shaft 6 of this embodiment, a head portion (a collar portion) 61 protruding outward in the radial direction (outer peripheral side) is formed at the upper end portion, and the head portion 61 is formed.
Is housed in the recess 23 of the pedestal 2 and attached. When the lower end of the swivel shaft 6 is caulked, the head 6 of the swivel shaft 6 is
1 and the caulked portion 62, the inner ring 71 of the bearing 7 is mounted on the base 2
Sandwiched through. Then, the inner ring 71 of the bearing 7 is fixed to the base 2 via the turning shaft 6.
As a result, the yoke 3 is rotatable about the pivot shaft 6 with respect to the pedestal 2 via the bearing 7.

【0021】ところで、以上の作業は、実際には、ヨー
ク3の中央片31を下方に、左右の支持片32,32を
上方に向けた状態で行うことができる。つまり、旋回軸
6をその頭部61を下方とした状態で立てておき、その
旋回軸6に台座2を介してヨーク3の軸受7を通した
後、旋回軸6の上端部をかしめればよい。
By the way, the above work can be actually carried out with the central piece 31 of the yoke 3 facing downward and the left and right support pieces 32, 32 facing upward. That is, if the swivel shaft 6 is stood upright with its head portion 61 facing downward, the bearing 7 of the yoke 3 is passed through the swivel shaft 6 via the pedestal 2, and then the upper end of the swivel shaft 6 is caulked. Good.

【0022】そして、ヨーク3の左右の支持片32,3
2の下端部に架け渡される車軸5に、車輪4が回転自在
に保持されることになる。なお、車輪4は、ベアリング
を介して車軸5に取り付けてもよいし、ベアリングなし
に取り付けてもよい。
The left and right support pieces 32, 3 of the yoke 3 are
The wheels 4 are rotatably held on the axle 5 that is bridged over the lower end of the wheel 2. The wheels 4 may be attached to the axle 5 via bearings or may be attached without bearings.

【0023】以上のようにして構成したキャスター1
は、被取付体に台座2を重ね合わせて、台座2の取付穴
21を介してねじ止め等することで、被取付体に取り付
けられて使用される。なお、上述したように、台座2の
中央部に形成された凹み部23に、旋回軸6の頭部61
が収納されるので、被取付体に台座2を重ね合わせた状
態で、キャスター1を取り付けることができる。
Caster 1 constructed as described above
Is used by being attached to the body to be attached by superposing the base 2 on the body to be attached and screwing the base 2 through the attachment holes 21 of the base 2. In addition, as described above, the head portion 61 of the turning shaft 6 is provided in the recessed portion 23 formed in the central portion of the pedestal 2.
Is stored, the caster 1 can be attached with the base 2 superposed on the attached body.

【0024】本実施例のキャスター1は、軸受ケースを
介することなく、ヨーク3自体に直接に軸受7を取り付
けることができる。よって、部品点数を少なくすること
ができ、製造の材料や手間を省き、コストを削減するこ
とができる。また、軸受ケースをヨークに組み付ける必
要がないので、その分だけ、構造をコンパクトなものと
することができる。しかも、キャスター使用時の騒音を
従来よりも一層軽減することができ、コンビニへの夜間
の荷物の搬入や、介護や医療関係、その他の用途に幅広
く適用することができる。
In the caster 1 of this embodiment, the bearing 7 can be directly attached to the yoke 3 itself without a bearing case. Therefore, the number of parts can be reduced, the manufacturing material and labor can be saved, and the cost can be reduced. Further, since it is not necessary to assemble the bearing case to the yoke, the structure can be made compact accordingly. Moreover, the noise during use of the casters can be further reduced as compared with the conventional case, and the present invention can be widely applied to carry-in of luggage to a convenience store at night, nursing care, medical care, and other uses.

【0025】図7は、本発明のキャスター1の第2実施
例を示す縦断面図であり、車輪4を取り付ける前の状態
を示している。なお、この実施例のキャスター1も、基
本的には上記実施例のものと同様であるので、以下では
主として上記実施例と異なる部分について説明する。
FIG. 7 is a longitudinal sectional view showing a second embodiment of the caster 1 of the present invention, showing a state before the wheels 4 are attached. The caster 1 of this embodiment is also basically the same as that of the above-mentioned embodiment, and therefore, only the parts different from the above-mentioned embodiment will be described below.

【0026】この実施例では、旋回軸6の上部が、台座
2の上面から上方に向けて突出配置され、その上方への
突出部がネジ部69とされている。よって、この実施例
のキャスター1を被取付体に取り付ける際には、被取付
体に形成したネジ穴に旋回軸6のネジ部69をねじ込ん
で取り付けることができる。
In this embodiment, the upper portion of the swivel shaft 6 is arranged so as to project upward from the upper surface of the pedestal 2, and the upward projecting portion is a screw portion 69. Therefore, when the caster 1 of this embodiment is attached to the attached body, the threaded portion 69 of the turning shaft 6 can be screwed into the screw hole formed in the attached body.

【0027】この実施例の台座2は、ヨーク中央片31
の略円筒状部31aよりも一回り大きい直径の略円板状
とされ、その外周部29は下方に向けて円弧状に僅かに
屈曲形成されている。よって、台座2は、ヨーク中央片
31の略円筒状部31aの上部を覆うように配置され
る。
The base 2 of this embodiment has a yoke central piece 31.
Is substantially disk-shaped with a diameter slightly larger than that of the substantially cylindrical portion 31a, and its outer peripheral portion 29 is slightly bent downward in an arc shape. Therefore, the pedestal 2 is arranged so as to cover the upper portion of the substantially cylindrical portion 31a of the yoke central piece 31.

【0028】また、前記実施例の台座2には、旋回軸挿
通用の穴22の周囲を下方に凹ませて凹み部23を形成
したが、本実施例の台座2では、旋回軸挿通用の穴22
の周囲には凹み部を形成せずに全体を平板状としてい
る。その代わり、台座2の下面には、台座2と軸受7の
内輪71との間に座金8を介在させている。なお、前記
第1実施例のように、凹み部23を形成された台座2を
用いることもでき、その場合には座金8を省略すること
ができるのは勿論である。
Further, in the pedestal 2 of the above-described embodiment, the periphery of the hole 22 for inserting the turning shaft is recessed downward to form the recessed portion 23, but in the pedestal 2 of the present embodiment, the turning shaft is inserted. Hole 22
There is no recessed part around and the whole is flat. Instead, a washer 8 is interposed between the pedestal 2 and the inner ring 71 of the bearing 7 on the lower surface of the pedestal 2. As in the first embodiment, the pedestal 2 having the recessed portion 23 may be used, and in that case, the washer 8 can be omitted.

【0029】この実施例の場合も、ヨーク3に形成した
凹部33に軸受7を収容した後、その凹部33の開口外
周部(33c)をかしめることで、ヨーク3に外輪72
を固定している。そして、台座2と前記座金8を介して
旋回軸6を軸受7に嵌合した後、その旋回軸6の鍔部6
1Aと下端部のかしめ部62との間で、軸受7の内輪7
1が保持される。これにより、旋回軸6を中心として台
座2にヨーク3が回動自在に取り付けられることにな
る。
Also in this embodiment, after the bearing 7 is housed in the concave portion 33 formed in the yoke 3, the outer peripheral portion 72 of the yoke 3 is caulked by caulking the outer peripheral portion (33c) of the opening of the concave portion 33.
Is fixed. Then, after the swivel shaft 6 is fitted into the bearing 7 via the pedestal 2 and the washer 8, the collar portion 6 of the swivel shaft 6 is fitted.
1A and the caulking portion 62 at the lower end, the inner ring 7 of the bearing 7
1 is retained. As a result, the yoke 3 is rotatably attached to the pedestal 2 about the pivot shaft 6.

【0030】なお、本発明のキャスター1は、上記実施
例の構成に限らず適宜変更可能である。例えば、上記各
実施例では、旋回軸8の下端部をかしめて、旋回軸8に
軸受内輪71を固定する例について説明したが、図8に
示すように、旋回軸8の下部外周面に形成されたネジ部
68にナット67をねじ込むことで、旋回軸8に軸受内
輪71を固定してもよい。つまり、図8の実施例では、
台座2と軸受内輪71に嵌められる旋回軸6はボルト状
に形成されており、その頭部61が台座2の凹み部23
に配置された状態で、ネジ部68に螺合されたナット6
7を、座金66を介して軸受内輪71の下端面に押圧す
るよう締め込むことで、軸受内輪71に旋回軸6を固定
している。
The caster 1 of the present invention is not limited to the configuration of the above embodiment, but can be modified as appropriate. For example, in each of the above-described embodiments, an example in which the lower end portion of the swivel shaft 8 is caulked and the bearing inner ring 71 is fixed to the swivel shaft 8 has been described, but as shown in FIG. 8, it is formed on the lower outer peripheral surface of the swivel shaft 8. The bearing inner ring 71 may be fixed to the turning shaft 8 by screwing the nut 67 into the formed screw portion 68. That is, in the embodiment of FIG.
The pedestal 2 and the swivel shaft 6 fitted in the bearing inner ring 71 are formed in a bolt shape, and the head portion 61 of the swivel shaft 6 is formed in the recess 23 of the pedestal 2.
Nut 6 screwed into the threaded portion 68 in the state of being placed in
The swivel shaft 6 is fixed to the bearing inner ring 71 by tightening 7 through the washer 66 so as to press the lower end surface of the bearing inner ring 71.

【0031】また、上記各実施例では、ヨーク3の中央
片31に形成する凹部33は、下方に凹ませてプレス成
形したが、凹部33は場合によっては上方に凹ませて形
成してもよい。その場合には、下方に開口する凹部33
となるので、その凹部33に軸受7を入れた後、凹部3
3の下部開口外周部をかしめればよい。
Further, in each of the above-described embodiments, the recess 33 formed in the central piece 31 of the yoke 3 is recessed downward and press-molded, but the recess 33 may be recessed upward depending on the case. . In that case, the concave portion 33 that opens downward
Therefore, after inserting the bearing 7 into the recess 33, the recess 3
The outer peripheral portion of the lower opening 3 may be caulked.

【0032】[0032]

【発明の効果】以上詳述したように、本発明のキャスタ
ーによれば、ヨーク自体に直接、軸受を固定することが
できる。よって、軸受ケースが不要であり、部品点数の
軽減を図ることができ、製作の手間と費用を軽減するこ
とができる。また、より静音性の高いキャスターとする
ことができる。
As described in detail above, according to the caster of the present invention, the bearing can be fixed directly to the yoke itself. Therefore, the bearing case is not required, the number of parts can be reduced, and the labor and cost of manufacturing can be reduced. Further, the caster can be made quieter.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明のキャスターの一実施例の製作過程を示
す図であり、ヨークの凹部に軸受を収容する状態を示す
斜視図である。
FIG. 1 is a diagram showing a manufacturing process of an embodiment of a caster of the present invention and is a perspective view showing a state in which a bearing is accommodated in a recess of a yoke.

【図2】図1のキャスターの製作過程の続きを示す図で
あり、ヨークの凹部に軸受を収容した状態を示す縦断面
図である。
FIG. 2 is a view showing a continuation of the manufacturing process of the caster shown in FIG. 1, and is a vertical cross-sectional view showing a state where a bearing is accommodated in the recess of the yoke.

【図3】図2のキャスターの製作過程の続きを示す図で
あり、ヨークの凹部の上方開口外周部をかしめて、ヨー
クに軸受の外輪を固定した状態を示す縦断面図である。
FIG. 3 is a view showing a continuation of the manufacturing process of the caster shown in FIG. 2, and is a vertical cross-sectional view showing a state in which the outer periphery of the bearing is fixed to the yoke by caulking the upper opening outer peripheral portion of the recess of the yoke.

【図4】図3のキャスターの製作過程の続きを示す図で
あり、ヨークに取り付けられた軸受に、台座を介して旋
回軸を差し込む状態を示す縦断面図である。
FIG. 4 is a view showing a continuation of the manufacturing process of the caster shown in FIG. 3, and is a vertical cross-sectional view showing a state in which the swivel shaft is inserted into the bearing attached to the yoke via the pedestal.

【図5】図4のキャスターの製作過程の続きを示す図で
あり、旋回軸の下端部をかしめて、台座にヨークを取り
付けた状態を示す縦断面図である。
5 is a view showing a continuation of the manufacturing process of the caster in FIG. 4, and is a vertical cross-sectional view showing a state in which the lower end of the turning shaft is caulked and the yoke is attached to the pedestal.

【図6】図5のキャスターの製作過程の続きを示す図で
あり、ヨークに車輪を取り付けた状態を示す組立完成状
態の斜視図である。
FIG. 6 is a view showing a continuation of the manufacturing process of the caster shown in FIG. 5, and is a perspective view in a completed assembled state showing a state where wheels are attached to the yoke.

【図7】本発明のキャスターの第2実施例を示す縦断面
図であり、車輪を省略して示している。
FIG. 7 is a vertical sectional view showing a second embodiment of the caster of the present invention, in which wheels are omitted.

【図8】本発明のキャスターの第3実施例を示す縦断面
図であり、車輪を省略して示している。
FIG. 8 is a vertical cross-sectional view showing a third embodiment of the caster of the present invention, in which wheels are omitted.

【図9】従来のキャスターを示す縦断面図であり、車輪
を省略して示している。
FIG. 9 is a vertical sectional view showing a conventional caster, in which wheels are omitted.

【符号の説明】[Explanation of symbols]

1 キャスター 2 台座 3 ヨーク 4 車輪 6 旋回軸 7 軸受 31 中央片 32 支持片 33 凹部 33c かしめ部 61,61A 鍔部 71 内輪 72 外輪 1 caster Two pedestals 3 York Four wheels 6 swivel axis 7 bearings 31 central piece 32 support pieces 33 recess 33c Caulking part 61,61A collar part 71 Inner ring 72 outer ring

フロントページの続き (56)参考文献 特開 平4−71902(JP,A) 特開 平11−245607(JP,A) 特開 平10−291401(JP,A) 実開 昭47−29(JP,U) 実開 昭60−166605(JP,U) 実開 昭56−33703(JP,U) 西独国特許出願公開2943697(DE, A1) 実用新案登録3014949(JP,U) Wheels and Castor s,verlag moderne i ndustrie,1992年,19−21 (58)調査した分野(Int.Cl.7,DB名) B60B 33/00 Continuation of the front page (56) Reference JP-A-4-71902 (JP, A) JP-A-11-245607 (JP, A) JP-A-10-291401 (JP, A) Actual development Sho-47-29 (JP , U) Actual development 60-166605 (JP, U) Actual development 56-33703 (JP, U) West German patent application publication 2943697 (DE, A1) Utility model registration 3014949 (JP, U) Wheels and Castors, verlag modern industrie, 1992, 19-21 (58) Fields investigated (Int. Cl. 7 , DB name) B60B 33/00

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 下方に向けて二股分かれすると共に、二
股分かれすることで形成される左右の支持片の上端部同
士を連結する中央片に、この中央片に対し略垂直に略円
筒状の凹部が、その凹部の底の穴の周囲に底壁を有し
て、一体的に形成されたプレス成形品のヨークと、 前記ヨークの左右の支持片間に、回転自在に保持される
車輪と、 前記ヨークの凹部に収容されて、前記凹部の外周部にお
いて、前記凹部の周側壁と前記中央片との角部がかしめ
られて、そのかしめ部と凹部の底壁の間で、ヨークに外
輪が固定される軸受と、 この軸受の内輪に固定される旋回軸を介して、前記ヨー
クが回転可能に取り付けられる台座とを備えることを特
徴とするキャスター。
1. A central piece that bifurcates downward and connects upper end portions of left and right support pieces formed by bifurcating, and a substantially cylindrical recess substantially perpendicular to the central piece. Has a bottom wall around the hole in the bottom of its recess
The integrally formed yoke of the press-molded product, the wheel rotatably held between the left and right support pieces of the yoke, and the wheel accommodated in the recess of the yoke, the wheel being mounted on the outer periphery of the recess .
And a corner portion between the peripheral side wall of the recess and the central piece is caulked, and the outer ring is fixed to the yoke between the caulking portion and the bottom wall of the recess, and the bearing is fixed to the inner ring of the bearing. A pedestal to which the yoke is rotatably attached via a turning shaft.
【請求項2】 台座と、この台座に対し旋回軸を中心に
回転可能に取り付けられるヨークと、このヨークに回転
自在に取り付けられる車輪とを備えたキャスターであっ
て、 ヨークは、鋼板がプレス成形されて形成され、その上部
中央片に、軸受が収容される略円筒状の凹部が、その凹
部の底の穴の周囲に底壁を有して、中央片に対し略垂直
下方に凹んで形成されており、 その凹部に配置される軸受は、凹部の上部開口の外周部
において、前記凹部の周側壁と前記中央片との角部がか
しめられることで、そのかしめ部と凹部の底壁の間で、
外輪をヨークに固定され、 台座を貫通して軸受の内輪に嵌められる旋回軸は、径方
向外側に突出した鍔部等で台座の上面に対し位置決めさ
れた状態で、下端部をかしめ或いはネジ止め等されて、
そのかしめ部ないしネジ止め部等と前記鍔部等との間で
内輪を保持して固定することを特徴とするキャスター。
2. A caster comprising a pedestal, a yoke rotatably attached to the pedestal about a turning axis, and a wheel rotatably attached to the yoke, wherein the yoke is formed by press forming a steel plate. It is formed by, in its upper center piece, a substantially cylindrical recess in which the bearing is housed, the concave
Has a bottom wall around the hole at the bottom of the section and is approximately perpendicular to the center piece
The bearing that is recessed downwardly in the recess is the outer peripheral part of the upper opening of the recess.
In, by caulking the corner portion of the peripheral side wall of the recess and the central piece, between the caulking portion and the bottom wall of the recess,
The outer ring is fixed to the yoke, and the swivel shaft, which penetrates the pedestal and fits into the inner ring of the bearing, is caulked or screwed at the lower end while being positioned with respect to the upper surface of the pedestal by the flange part protruding outward in the radial direction. And so on,
A caster characterized in that an inner ring is held and fixed between the caulked portion or screwed portion and the flange portion.
JP2000187836A 2000-06-22 2000-06-22 caster Expired - Fee Related JP3442034B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000187836A JP3442034B2 (en) 2000-06-22 2000-06-22 caster

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000187836A JP3442034B2 (en) 2000-06-22 2000-06-22 caster

Publications (2)

Publication Number Publication Date
JP2002002209A JP2002002209A (en) 2002-01-08
JP3442034B2 true JP3442034B2 (en) 2003-09-02

Family

ID=18687739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000187836A Expired - Fee Related JP3442034B2 (en) 2000-06-22 2000-06-22 caster

Country Status (1)

Country Link
JP (1) JP3442034B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2405678B (en) 2003-09-03 2007-03-07 Nsk Europ Ltd A bearing assembly
JP5451679B2 (en) * 2011-04-22 2014-03-26 ゴールドキャスター株式会社 Caster production method
JP7162506B2 (en) * 2018-11-22 2022-10-28 中日本高速道路株式会社 movable guard fence
CN113494519B (en) * 2021-07-28 2023-08-01 江苏万达特种轴承股份有限公司 Square steering bearing for AGV caster and processing method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2943697A1 (en) 1979-10-30 1981-05-14 Tente-Rollen Gmbh & Co, 5632 Wermelskirchen Support fork for castor - has crimped connection to swivel bearing shell
JP3014949U (en) 1995-02-20 1995-08-22 株式会社荒井製作所 caster

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2943697A1 (en) 1979-10-30 1981-05-14 Tente-Rollen Gmbh & Co, 5632 Wermelskirchen Support fork for castor - has crimped connection to swivel bearing shell
JP3014949U (en) 1995-02-20 1995-08-22 株式会社荒井製作所 caster

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Wheels and Castors,verlag moderne industrie,1992年,19−21

Also Published As

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