JPH11210746A - Turning ring for sash roller - Google Patents
Turning ring for sash rollerInfo
- Publication number
- JPH11210746A JPH11210746A JP3199898A JP3199898A JPH11210746A JP H11210746 A JPH11210746 A JP H11210746A JP 3199898 A JP3199898 A JP 3199898A JP 3199898 A JP3199898 A JP 3199898A JP H11210746 A JPH11210746 A JP H11210746A
- Authority
- JP
- Japan
- Prior art keywords
- rolling elements
- rolling
- ring
- outer ring
- held
- 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.)
- Granted
Links
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、例えば戸車に用
いるのに適した回動輪、及びこのような回動輪等に使用
するのに適したころがり軸受に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating wheel suitable for use in, for example, a door roller and a rolling bearing suitable for use in such a rotating wheel.
【０００２】[0002]
【従来の技術】戸車に用いる回動輪１０１は、回動する
外輪１０２とこれに内側に位置して軸を通す内輪１０３
との間に複数の転動体１０４を１列に並べて保持して構
成されているが、図７に示したように外輪を樹脂のみで
形成した場合、耐久性が悪いという難点があった。2. Description of the Related Art A rotating wheel 101 used for a door roller includes an outer wheel 102 which rotates and an inner wheel 103 which is located inside the outer wheel 102 and through which a shaft passes.
And a plurality of rolling elements 104 are arranged and held in a line between them. However, when the outer ring is formed only of resin as shown in FIG. 7, there is a drawback that durability is poor.
【０００３】つまり、外輪１０２は内輪１０３との間に
転動体１０４としての金属球を保持するわけであるが、
この保持のために外輪１０２の内周面と金属製の内輪１
０３の外周面とに、円弧状の転動溝１０２ａ，１０３ａ
を形成するとともに、これらの間に保持した転動体１０
４を全周に均等に分散させるため、各転動体１０４の間
に差し込まれる爪状の突起１０５ａを有した樹脂製の保
持器１０５を一側面から嵌着している。外輪１０２の回
動により転動する転動体１０４は、外輪１０２と内輪１
０３の転動溝１０２ａ，１０３ａと、保持器１０５の突
起１０５ａに面接触するのであるが、回動輪１０１には
縦方向に荷重が掛かるのでどうしても外輪１０２の内周
面の転動溝１０２ａの方がより大きい負荷を受けやす
い。また保持器１０５の突起１０５ａも、外輪１０２の
回動方向への負荷を受けやすい。このため、大きな荷重
を支えた回動輪１０１の回動動作が高速で、また頻繁に
繰り返されると、フレーキングにより外輪１０２や保持
器１０５の樹脂部分が損傷してしまう。In other words, the outer race 102 holds a metal ball as the rolling element 104 between the outer race 102 and the inner race 103.
For this holding, the inner peripheral surface of the outer ring 102 and the inner ring 1 made of metal are used.
03 and the outer peripheral surface of the arc-shaped rolling grooves 102a, 103a
And the rolling elements 10 held between them
In order to evenly disperse 4 around the entire circumference, a resin-made retainer 105 having a claw-shaped projection 105a inserted between the rolling elements 104 is fitted from one side. The rolling element 104 that rolls by the rotation of the outer ring 102 includes the outer ring 102 and the inner ring 1.
Although the rolling grooves 102a and 103a of No. 03 are in surface contact with the projections 105a of the retainer 105, a load is applied to the rotating wheel 101 in the vertical direction. But more susceptible to load. Further, the protrusion 105a of the retainer 105 is also susceptible to a load in the rotating direction of the outer ring 102. Therefore, if the rotating operation of the rotating wheel 101 supporting a large load is repeated at high speed and frequently, the resin parts of the outer ring 102 and the retainer 105 are damaged by flaking.
【０００４】このため、図８に示したように外輪１０２
の内周面を金属製のリング１０２ｂで構成することも行
なわれているが、リング１０２ｂをインサート成形しな
ければならず、高価になってしまう難点がある。その
上、保持器１０５の突起１０５ａが必要なことに変わり
はなく、この突起１０５ａが折れてしまったりすること
を完全に防止できるわけではない。For this reason, as shown in FIG.
Although the inner peripheral surface of the metal ring 102b is formed of a metal ring 102b, the ring 102b has to be insert-molded, which is disadvantageous in that it is expensive. In addition, the projection 105a of the retainer 105 is still required, and it cannot be completely prevented that the projection 105a is broken.
【０００５】[0005]
【解決すべき課題及びそのための手段】そこでこの発明
は、外輪または外側の軌道輪を合成樹脂のみで構成して
廉価な生産を行なっても耐久性が高いような回動輪、及
びころがり軸受の提供を主たる課題とする。SUMMARY OF THE INVENTION Accordingly, the present invention provides a rotating wheel and a rolling bearing which have high durability even if the outer ring or the outer race is formed only of synthetic resin and inexpensive production is performed. Is the main issue.
【０００６】そのための手段は、回動する外輪と軸を通
す内輪との間に複数の転動体を保持した回動輪であっ
て、上記転動体を、周方向に複数列で配列するととも
に、隣り合う列のうちの一方の転動体が他方の列の転動
体の間の隙間に入るように配置した回動輪であることを
特徴とする。なお、前記各転動体は、相互に接触するよ
うに保持するとよい。The means for this purpose is a rotating wheel holding a plurality of rolling elements between a rotating outer ring and an inner ring passing through a shaft. The rolling elements are arranged in a plurality of rows in the circumferential direction and are adjacent to each other. It is characterized in that one rolling element of the matching row is a rotating wheel arranged so as to enter a gap between the rolling elements of the other row. The rolling elements may be held so as to be in contact with each other.
【０００７】また別の手段は、内外の軌道輪間に複数の
転動体を保持したころがり軸受であって、上記転動体
を、周方向に複数列で配列するとともに、隣り合う列の
うちの一方の転動体が他方の列の転動体の間の隙間に入
るように配置したころがり軸受であることを特徴とす
る。この場合も、前記各転動体を相互に接触するように
保持するとよい。Another means is a rolling bearing holding a plurality of rolling elements between inner and outer races, wherein the rolling elements are arranged in a plurality of rows in a circumferential direction, and one of the adjacent rows is provided. Is a rolling bearing arranged so that the rolling element of the other row enters the gap between the rolling elements of the other row. Also in this case, it is preferable to hold the rolling elements so as to be in contact with each other.
【０００８】[0008]
【作用及び効果】すなわち上述の構成によれば、転動す
る転動体は外輪と内輪、または内外の軌道輪との間に位
置して上からの荷重を受けるも、転動体が周方向に複数
列で、しかも一方の列の転動体が他方の列の転動体の間
の隙間に入るように、いわゆる千鳥状に配設されている
ので、荷重は複数箇所に分散される。従来は、転動体が
荷重の掛かってくる方向に位置するとき、最も近い転動
体は、同じ列ではあるが離れた位置にあったので、極論
すれば１個の転動体で支持しているのような状態であっ
た。これに対してこの発明では、１個の転動体にとって
最も近い転動体は、隣の列ではあるが荷重を支えるに足
りる斜めの位置に複数個ある。According to the above construction, the rolling element to be rolled is located between the outer ring and the inner ring, or between the inner and outer races, and receives a load from above. Since the rolling elements in one row are arranged in a staggered manner such that the rolling elements in one row enter the gaps between the rolling elements in the other row, the load is distributed to a plurality of locations. Conventionally, when the rolling elements are located in the direction in which the load is applied, the closest rolling elements are located in the same row but at distant positions. Therefore, in extreme cases, the rolling elements are supported by one rolling element. It was like that. On the other hand, in the present invention, a plurality of rolling elements closest to one rolling element are located in the adjacent row but at oblique positions sufficient to support the load.
【０００９】したがって、一部のみに大きな荷重が掛か
らず、たとい樹脂ではあっても金属を用いたのと同等ま
たはそれ以上に高い耐久性を得ることができる。Therefore, a large load is not applied only to a part, and even if a resin is used, a durability equal to or higher than that of using a metal can be obtained.
【００１０】また転動体を周方向に複数列で、しかも一
方の列の転動体が他方の列の転動体の間の隙間に入るよ
うに配列したので、幅寸法を極力抑えることができる。
このため、戸車のようにあまり幅広にできない回動輪
や、幅寸法が狭いことを要求されるころがり軸受を得る
のに貢献する。Further, since the rolling elements are arranged in a plurality of rows in the circumferential direction, and the rolling elements in one row are arranged so as to enter the gap between the rolling elements in the other row, the width dimension can be minimized.
This contributes to obtaining a rotating wheel that cannot be made too wide like a door roller, and a rolling bearing that requires a narrow width.
【００１１】請求項２や請求項４のように、転動体を相
互に接触するように保持すると、転動体を保持する保持
器は不要となり、従来のように保持器の突起が折れると
いうような事は一切なく、この点でも耐久性を向上でき
る。また、転動体は相互に接触するので、任意の１個の
転動体の周りには複数の転動体が密に位置することにな
り、負荷軽減のためのより有効な荷重の分散が行なえ、
さらなる耐久性の向上が可能である。さらに、転動体を
保持する作業は、外輪と内輪、または内外の軌道輪との
間の隙間に入るだけ入れればよく、簡単である。When the rolling elements are held in contact with each other as in claims 2 and 4, a holder for holding the rolling elements is not required, and the projections of the holder may break as in the prior art. There is nothing at all, and durability can be improved in this respect as well. Further, since the rolling elements contact each other, a plurality of rolling elements are densely located around any one rolling element, and a more effective load distribution for reducing the load can be performed.
Further improvement in durability is possible. Further, the work of holding the rolling element is simple, since it only has to be inserted into the gap between the outer ring and the inner ring, or between the inner and outer races.
【００１２】[0012]
【実施例】この発明の一実施例を以下図面に基づいて詳
述する。図１は回動輪１の分解斜視図であり、この回動
輪１は例えば図２に示したような室内の間仕切り２の下
端に取付ける戸車３に組み込まれて使用される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an exploded perspective view of the rotating wheel 1, and the rotating wheel 1 is used by being incorporated in a door wheel 3 attached to a lower end of a room partition 2 as shown in FIG. 2, for example.
【００１３】上記回動輪１は、車輪となる外輪４と、こ
れの内側に位置して軸を通す内輪５と、これらの間に転
動可能に保持される多数の転動体と６…、外輪４の一側
面に嵌着固定されるシール部材７とで構成されている。The rotating wheel 1 includes an outer wheel 4 serving as a wheel, an inner wheel 5 located inside the outer wheel 4 and passing through a shaft, and a number of rolling elements 6 and 7 rotatably held between the outer wheel 4 and the outer wheel. 4 and a seal member 7 fitted and fixed to one side surface.
【００１４】外輪４は、ＰＯＭ（ポリアセタール）等の
合成樹脂からなり、戸車３として必要な所定の厚みと形
を有する円板状に形成され、一側面から他側面にかけて
大径穴部８を形成し、この大径穴部８の底部８ａには、
他側面に開口する内輪遊嵌穴９を形成している。また上
記大径穴部８の一側面の開口縁には、大径穴部８よりも
大径で大径穴部８の底部８ａの厚みと同じ深さの嵌着段
部１０を形成している。The outer race 4 is made of a synthetic resin such as POM (polyacetal), and is formed in a disk shape having a predetermined thickness and shape required for the door roller 3, and has a large-diameter hole portion 8 extending from one side to the other side. The bottom 8a of the large-diameter hole 8 has
An inner ring loose fitting hole 9 is formed on the other side surface. At the opening edge on one side surface of the large-diameter hole 8, a fitting step portion 10 having a diameter larger than that of the large-diameter hole 8 and having the same depth as the thickness of the bottom 8 a of the large-diameter hole 8 is formed. I have.
【００１５】前記内輪５は、金属製で、外輪４の厚みに
対応する短い筒状に形成されている。そして上記外輪４
の大径穴部８の内周面４ａと、この内輪５の外周面５ａ
との間の略ドーナツ形の保持空間１１に、図３に示した
ように前記転動体６…を保持する。The inner race 5 is made of metal and is formed in a short cylindrical shape corresponding to the thickness of the outer race 4. And the outer ring 4
Inner surface 4a of the large-diameter hole portion 8 and outer surface 5a of the inner ring 5
The rolling elements 6 are held in a substantially donut-shaped holding space 11 between them as shown in FIG.
【００１６】この転動体６…は金属からなる球体で、上
記保持空間１１内に相互に接触するように２列の千鳥状
に入るものである。例えば幅Ｗ1 ７．５mm、径Ｌ1 ２６
mmの回動輪１で、保持空間１１の幅Ｗ2 が５．９３mm、
厚みＬ2 ３．１７５mmの場合、直径１／８インチの転動
体６…を使用し、周方向の一方の列に１１個、そしてこ
れらの転動体６…が隣の列の転動体６…の間に入るよう
に１１個、合計２２個入るようにする。保持状態の展開
図を示すと図４の通りである。The rolling elements 6 are spheres made of metal and are arranged in two rows in a staggered manner so as to come into contact with each other in the holding space 11. For example, the width W 1 7.5 mm, the diameter L 1 26
mm, the width W 2 of the holding space 11 is 5.93 mm,
When the thickness L 2 is 3.175 mm, 11 rolling elements 6... Having a diameter of 1/8 inch are used, and 11 rolling elements 6 are arranged in one row in the circumferential direction. There are 11 pieces in between, and a total of 22 pieces. FIG. 4 shows a developed view of the holding state.
【００１７】なお、転動体６…の配列は２列ばかりでは
なく３列４列等でもよい。また図５に示したように転動
体６…を１個ずつ所定間隔おきに転動可能に保持する保
持部材１２を用いるなどして、各転動体６…相互が接触
しないように千鳥状に配列して保持するもよい。The arrangement of the rolling elements 6 is not limited to two, but may be three or four. As shown in FIG. 5, the rolling elements 6 are arranged in a staggered manner so that they do not come into contact with each other by using a holding member 12 for holding the rolling elements 6 in a rolling manner at predetermined intervals. It may be held.
【００１８】前記シール部材７は、ＰＯＭ（ポリアセタ
ール）等の合成樹脂製で、転動体６…を保持空間１１内
に保持した後、前記嵌着段部１０に嵌着固定し、図３に
示したように転動体６…の保持状態を確保するためのも
のである。その形状は、上記嵌合段部１０に嵌合対応す
る形の円板状体の中心に、前記内輪遊嵌穴９と同じ形の
内輪遊嵌穴７ａを有した形状である。外周縁には、嵌着
状態を保持するため内側面の方が大径となるような若干
の傾斜つけている。The sealing member 7 is made of a synthetic resin such as POM (polyacetal). After the rolling elements 6 are held in the holding space 11, they are fitted and fixed to the fitting step 10 and are shown in FIG. As described above, this is for securing the holding state of the rolling elements 6. Its shape is such that it has an inner ring loose fitting hole 7a having the same shape as the inner ring loose fitting hole 9 at the center of a disc-shaped body that is fitted to the fitting step 10. The outer peripheral edge is slightly inclined so that the inner surface has a larger diameter to maintain the fitted state.
【００１９】このシール部材７の嵌着により転動体６…
は、保持空間１１内において、外輪４の内周面４ａと内
輪５の外周面５ａ、および大径穴部８の底部８ａまたは
シール部材７と点接触した状態で保持される。点接触で
あるので抵抗は小さく、良好な回動が得られる。The rolling members 6...
Are held in the holding space 11 in point contact with the inner peripheral surface 4a of the outer race 4 and the outer peripheral surface 5a of the inner race 5 and the bottom 8a of the large diameter hole 8 or the sealing member 7. Since it is a point contact, the resistance is small and good rotation is obtained.
【００２０】なお、転動体６…は図６に示したように保
持するもよい。すなわち保持空間１１を、前述のように
外輪４の大径穴部８によって形成するのではなく、内輪
５の外周面の両側縁に鍔状の立上がり部５ｂ，５ｂを形
成することによって形作るようにしている。組立は、こ
の保持空間１１に転動体６…を千鳥状に保持したのち外
輪４を嵌める。なお外輪４の両側面に、内輪５の両側面
を覆う被覆部を形成、または取付けて、内輪５を包むよ
うにするもよい。The rolling elements 6 may be held as shown in FIG. That is, the holding space 11 is not formed by the large-diameter hole 8 of the outer ring 4 as described above, but is formed by forming flange-shaped rising portions 5b, 5b on both side edges of the outer peripheral surface of the inner ring 5. ing. After assembling the rolling elements 6... In the holding space 11 in a staggered manner, the outer ring 4 is fitted. It is also possible to form or attach covering parts on both sides of the outer ring 4 to cover both sides of the inner ring 5 so as to wrap the inner ring 5.
【００２１】上述のように構成した回動輪１は、断面コ
字形の金具（図示せず）に軸支して戸車３に組み付けて
使用する。この回動輪１では、転動する転動体６…は外
輪４と内輪５との間の保持空間１１に位置して縦方向の
荷重を受けるも、転動体６…が周方向に２列で、しかも
一方の列の転動体６…が他方の列の転動体６…の間の隙
間に入るように、いわゆる千鳥状に配設されているの
で、荷重は複数箇所に分散される。しかもその分散は、
１個の転動体６にとって斜めの位置にある最も近い転動
体６…から順に千鳥状に行なわれる。The rotating wheel 1 configured as described above is supported by a bracket (not shown) having a U-shaped cross section and used by being assembled to the door roller 3. In the rotating wheel 1, the rolling elements 6 rolling are positioned in the holding space 11 between the outer ring 4 and the inner ring 5 and receive a vertical load, but the rolling elements 6 are arranged in two rows in the circumferential direction. Moreover, since the rolling elements 6 in one row are arranged in a staggered manner so as to enter the gap between the rolling elements 6 in the other row, the load is distributed to a plurality of locations. And the dispersion is
The rolling elements 6 are arranged in a staggered order from the nearest rolling element 6 at an oblique position to one rolling element 6.
【００２２】したがって、一部のみに大きな荷重が掛か
らず、たとい樹脂ではあっても金属を用いたのと同等ま
たはそれ以上に高い耐久性を得ることができる。Therefore, a large load is not applied to only a part, and even if a resin is used, a durability equal to or higher than that of using a metal can be obtained.
【００２３】例えば、直径２６mm、幅７．５mmの回動輪
について、図６に示した従来構造のものと本願発明の構
造のものとの寿命の比較実験を、１個の回動輪に対して
２０Kgの荷重を掛けて行なった結果、次ような結果が得
られた。すなわち従来構造の回動輪（直径５／３２イン
チ×６球）の場合１，８５６，０３４回転であったのに
対し、本願発明の構造の回動輪（直径１／８インチ×２
２球）では５，５７７，０３２回転と、約３倍も寿命が
延びた。For example, with respect to a turning wheel having a diameter of 26 mm and a width of 7.5 mm, a comparison experiment of the life between the conventional structure shown in FIG. As a result, the following results were obtained. That is, in the case of the conventional rotating wheel (diameter of 5/32 inch × 6 balls), the rotation was 1,856,034 rotations, whereas in the case of the rotating wheel of the present invention (1/8 inch × 2 balls).
With 2 balls, 5,577,032 revolutions, the life was extended about three times.
【００２４】また転動体６…を周方向に２列で、しかも
一方の列の転動体６…が他方の列の転動体６…の間の隙
間に入るように配列したので、幅寸法を極力抑えること
ができる。このため、前述した戸車３のようにあまり幅
広にできない回動輪１を得るのに貢献する。The rolling elements 6 are arranged in two rows in the circumferential direction, and the rolling elements 6 of one row are arranged so as to enter the gap between the rolling elements 6 of the other row. Can be suppressed. For this reason, it contributes to obtaining the rotating wheel 1 that cannot be made too wide as in the above-described door roller 3.
【００２５】さらに、転動体６…を相互に接触するよう
に保持しているので、転動体６…を等間隔に隔てて保持
する保持器は不要であり、従来のように保持器の突起が
折れるというような事は一切なく、この点でも耐久性を
向上できる。また、転動体６…は相互に接触するので、
任意の１個の転動体６の周りには複数の転動体６…が密
に位置することになり、負荷軽減のためのより有効な荷
重の分散が行なえ、さらなる耐久性の向上が可能であ
る。さらに、転動体６…を保持する作業は、外輪４と内
輪５との間の保持空間１１に入るだけ入れればよく、簡
単である。Further, since the rolling elements 6 are held so as to be in contact with each other, a cage for holding the rolling elements 6 at equal intervals is unnecessary, and the projections of the cage are different from those of the prior art. There is no such thing as breaking, and durability can be improved in this respect as well. Since the rolling elements 6 contact each other,
A plurality of rolling elements 6 are densely located around any one rolling element 6, so that more effective load distribution for reducing the load can be performed and the durability can be further improved. . Further, the operation of holding the rolling elements 6... May be simply inserted into the holding space 11 between the outer ring 4 and the inner ring 5 and is simple.
【００２６】しかも、従来の回動輪では転動体６…が転
動するための溝を内輪５に形成する必要があったが、上
述の構成によれば、その溝を形成する必要はなく製造が
容易となり、また鋼球は安価であるので、手間もコスト
も低減できる。In addition, in the conventional rotating wheel, it was necessary to form a groove for rolling the rolling elements 6 in the inner ring 5, but according to the above-described structure, it is not necessary to form the groove, and the manufacturing is simplified. It is easy and the steel balls are inexpensive, so that the labor and cost can be reduced.
【００２７】なお、以上の構成の回動輪１はころがり軸
受としても使用できる。The rotating wheel 1 having the above structure can be used as a rolling bearing.
【００２８】以上の一実施例における内輪５と外輪４
は、特許請求の範囲における内外の軌道輪に対応する。The inner ring 5 and the outer ring 4 in one embodiment described above.
Corresponds to the inner and outer races in the claims.
【図１】回動輪の分解斜視図。FIG. 1 is an exploded perspective view of a rotating wheel.
【図２】使用状態の斜視図。FIG. 2 is a perspective view of a use state.
【図３】縦断面図。FIG. 3 is a longitudinal sectional view.
【図４】展開図。FIG. 4 is a development view.
【図５】他の例の展開図。FIG. 5 is a development view of another example.
【図６】他の例の縦断面図。FIG. 6 is a longitudinal sectional view of another example.
【図７】従来技術の一部断面正面図。FIG. 7 is a partial sectional front view of a conventional technique.
【図８】従来技術の一部断面正面図。FIG. 8 is a partial cross-sectional front view of a conventional technique.
１…回動輪 ４…外輪 ５…内輪 ６…転動体 １１…保持空間 DESCRIPTION OF SYMBOLS 1 ... Rotating wheel 4 ... Outer ring 5 ... Inner ring 6 ... Rolling element 11 ... Holding space
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【手続補正書】[Procedure amendment]
【提出日】平成１１年１月１４日[Submission date] January 14, 1999
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【書類名】 明細書[Document Name] Statement
【発明の名称】 戸車用回動輪 [ Title of the Invention] Rotating wheel for door car
【特許請求の範囲】[Claims]
【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】この発明は、戸車に用いるの
に適した戸車用回動輪に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turning wheel for a door car suitable for use in a door car .
【０００２】[0002]
【従来の技術】戸車に用いる回動輪１０１は、回動する
外輪１０２と、これの内側に位置して軸を通す内輪１０
３との間に、複数の転動体１０４を１列に並べて保持し
て構成されているが、図７に示したように外輪を樹脂の
みで形成した場合、耐久性が悪いという難点があった。Times wheel 101 for use of the Related Art door rollers, inner ring 10 through the outer ring 102 to rotate, the shaft located inside the this
3 , a plurality of rolling elements 104 are arranged and held in a line, but when the outer ring is formed only of resin as shown in FIG. 7, there is a drawback that durability is poor. .
【０００３】つまり、外輪１０２は内輪１０３との間に
転動体１０４としての金属球を保持するわけであるが、
この保持のために外輪１０２の内周面と金属製の内輪１
０３の外周面とに、円弧状の転動溝１０２ａ，１０３ａ
を形成するとともに、これらの間に保持した転動体１０
４を全周に均等に分散させるため、各転動体１０４の間
に差し込まれる爪状の突起１０５ａを有した樹脂製の保
持器１０５を一側面から嵌着している。外輪１０２の回
動により転動する転動体１０４は、外輪１０２と内輪１
０３の転動溝１０２ａ，１０３ａと、保持器１０５の突
起１０５ａに面接触するのであるが、回動輪１０１には
縦方向に荷重が掛かるのでどうしても外輪１０２の内周
面の転動溝１０２ａの方がより大きい負荷を受けやす
い。また保持器１０５の突起１０５ａも、外輪１０２の
回動方向への負荷を受けやすい。このため、大きな荷重
を支えた回動輪１０１の回動動作が高速で、また頻繁に
繰り返されると、フレーキングにより外輪１０２や保持
器１０５の樹脂部分が損傷してしまう。In other words, the outer race 102 holds a metal ball as the rolling element 104 between the outer race 102 and the inner race 103.
For this holding, the inner peripheral surface of the outer ring 102 and the inner ring 1 made of metal are used.
03 and the outer peripheral surface of the arc-shaped rolling grooves 102a, 103a
And the rolling elements 10 held between them
In order to evenly disperse 4 around the entire circumference, a resin-made retainer 105 having a claw-shaped projection 105a inserted between the rolling elements 104 is fitted from one side. The rolling element 104 that rolls by the rotation of the outer ring 102 includes the outer ring 102 and the inner ring 1.
Although the rolling grooves 102a and 103a of No. 03 are in surface contact with the projections 105a of the retainer 105, a load is applied to the rotating wheel 101 in the vertical direction. But more susceptible to load. Further, the protrusion 105a of the retainer 105 is also susceptible to a load in the rotating direction of the outer ring 102. Therefore, if the rotating operation of the rotating wheel 101 supporting a large load is repeated at high speed and frequently, the resin parts of the outer ring 102 and the retainer 105 are damaged by flaking.
【０００４】このため、図８に示したように外輪１０２
の内周面を金属製のリング１０２ｂで構成することも行
なわれているが、リング１０２ｂをインサート成形しな
ければならず、高価になってしまう難点がある。その
上、保持器１０５の突起１０５ａが必要なことに変わり
はなく、この突起１０５ａが折れてしまったりすること
を完全に防止できるわけではない。For this reason, as shown in FIG.
Although the inner peripheral surface of the metal ring 102b is formed of a metal ring 102b, the ring 102b has to be insert-molded, which is disadvantageous in that it is expensive. In addition, the projection 105a of the retainer 105 is still required, and it cannot be completely prevented that the projection 105a is broken.
【０００５】[0005]
【解決すべき課題及びそのための手段】そこでこの発明
は、外輪を合成樹脂のみで構成して廉価な生産を行なっ
ても耐久性が高いような戸車用回動輪の提供を主たる課
題とする。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a rotating wheel for a door wheel which has high durability even if the outer ring is made only of a synthetic resin and inexpensive production is performed.
【０００６】そのための手段は、回動する合成樹脂製の
外輪と、軸を通す短筒状の内輪との間に、複数の転動体
を保持した戸車用回動輪であって、上記外輪の内周面と
内輪の外周面とを、上記転動体が転動するための溝がな
い幅方向に平坦な形状に形成し、上記転動体を、周方向
に複数列で配設するとともに、隣り合う列のうちの一方
の転動体が他方の列の転動体間の隙間に入るように配設
した戸車用回動輪であることを特徴とする。なお、前記
各転動体は、近いもの同士が相互に接触可能なように配
設したり、２列に配列するとともに、１つの転動体に対
してその周囲にある４つの転動体が点接触可能なように
配設したりするとよい。[0006] Means for this is a rotating synthetic resin.
A plurality of rolling elements are provided between the outer ring and the short cylindrical inner ring through which the shaft passes.
And a rotating wheel for a door roller holding the inner peripheral surface of the outer ring and
A groove is formed between the outer peripheral surface of the inner ring and the rolling element for rolling.
The rolling element is formed in a flat shape in the width direction
In multiple rows and one of the adjacent rows
So that the rolling elements in the other row enter the gap between the rolling elements in the other row
It is a turning wheel for a door roller that has been described. The rolling elements are arranged so that close ones can contact each other.
Or two rows, and one rolling element
So that the four rolling elements around it can make point contact
It is good to arrange .
【０００７】また別の手段は、回動する合成樹脂製の外
輪と、軸を通す短筒状の内輪との間に、複数の転動体を
保持した戸車用回動輪であって、上記外輪を、所定の厚
みを有する円板状に形成するとともに、一側面から他側
面にかけて穴部を形成し、該穴部の底部には、他側面に
開口し上記内輪を遊嵌する内輪遊嵌穴を形成し、上記穴
部の内周面と上記内輪の外周面とを、上記転動体が転動
するための溝がない幅方向に平坦な形状に形成し、上記
転動体は、周方向に複数列で配設するとともに、隣り合
う列のうちの一方の転動体が他方の列の転動体間の隙間
に入り近いもの同士が相互に接触可能なように配設し、
上記外輪の一側面の穴部を、中央に内輪遊嵌穴を有する
シール部材の嵌着で閉塞して、上記転動体の保持状態を
確保した戸車用回動輪であることを特徴とする。 Another means is a rotating synthetic resin outer member.
Multiple rolling elements are placed between the wheel and the short cylindrical inner ring through which the shaft passes.
The held swing wheel for a door wheel, wherein the outer ring has a predetermined thickness.
Formed into a disc shape with only
A hole is formed over the surface, and at the bottom of the hole,
Forming an inner ring play fitting hole for opening and loosely fitting the inner ring;
The rolling element rolls between the inner peripheral surface of the portion and the outer peripheral surface of the inner ring.
Formed into a flat shape in the width direction without grooves for
The rolling elements are arranged in multiple rows in the circumferential direction, and
The gap between one rolling element in one row and the rolling element in the other row
Are arranged so that objects that are close to each other can contact each other,
The hole on one side of the outer ring has an inner ring loose fitting hole in the center
It is closed by the fitting of the seal member, and the holding state of the rolling element is changed.
It is characterized by being a secured rotating wheel for a door roller.
【０００８】[0008]
【作用及び効果】すなわち上述の構成によれば、転動す
る転動体は、外輪と内輪との間に位置して上からの荷重
を受けるも、転動体が周方向に複数列で、しかも一方の
列の転動体が他方の列の転動体の間の隙間に入るよう
に、いわゆる千鳥状に配設されているので、荷重は複数
箇所に分散される。従来は、転動体が荷重の掛かってく
る方向に位置するとき、最も近い転動体は、同じ列では
あるが離れた位置にあったので、極論すれば１個の転動
体で支持しているのような状態であった。これに対して
この発明では、１個の転動体にとって最も近い転動体
は、隣の列ではあるが荷重を支えるに足りる斜めの近い
位置に複数個ある。According to the operation and effect] That the above configuration, the rolling elements that roll also receives a load from above is positioned between the outer ring and the inner ring, rolling elements in a plurality of rows in the circumferential direction, moreover Since the rolling elements in one row are arranged in a staggered manner so as to enter the gap between the rolling elements in the other row, the load is distributed to a plurality of locations. Conventionally, when the rolling elements are located in the direction in which the load is applied, the closest rolling elements are located in the same row but at distant positions. Therefore, in extreme cases, the rolling elements are supported by one rolling element. It was like that. On the other hand, in the present invention, a plurality of rolling elements closest to one rolling element are located in adjacent rows but at obliquely close positions sufficient to support the load.
【０００９】したがって、一部のみに大きな荷重が掛か
らず、外輪が樹脂ではあっても金属を用いたのと同等ま
たはそれ以上に高い耐久性を得ることができる。Therefore, a large load is not applied to only a part, and even if the outer ring is made of resin, it is possible to obtain durability equal to or higher than that of using metal.
【００１０】また転動体を周方向に複数列で、しかも一
方の列の転動体が他方の列の転動体の間の隙間に入るよ
うに配列したので、幅寸法を極力抑えることができる。
このため、戸車のようにあまり幅広にできない物の回動
輪として最適である。 Further, since the rolling elements are arranged in a plurality of rows in the circumferential direction, and the rolling elements in one row are arranged so as to enter the gap between the rolling elements in the other row, the width dimension can be minimized.
For this reason, rotation of objects that cannot be made too wide, such as door rollers
Ideal as a ring.
【００１１】さらに、外輪の内周面や内輪の外周面には
転動体が転動するための溝を形成していないので、製造
は容易で、手間もコストも低減できる。 Further, the inner peripheral surface of the outer ring and the outer peripheral surface of the inner ring
Since the rolling elements do not have grooves for rolling, manufacturing
Is easy, and labor and cost can be reduced.
【００１２】請求項２や請求項３のように、近くの転動
体同士が相互に接触するように保持すると、転動体を保
持する保持器は不要となり、従来のように保持器の突起
が折れるというような事は一切なく、この点でも耐久性
を向上できる。また、転動体は相互に接触するので、任
意の１個の転動体の周りには複数の転動体が密に位置す
ることになり、負荷軽減のためのより有効な荷重の分散
が行なえ、さらなる耐久性の向上が可能である。さら
に、転動体を保持する作業は、外輪と内輪との間の隙間
に入るだけ入れればよく、簡単である。When the nearby rolling elements are held so as to be in contact with each other as in the second and third aspects, a retainer for holding the rolling elements becomes unnecessary, and the projection of the retainer breaks as in the related art. There is no such thing at all, and durability can be improved in this respect as well. Further, since the rolling elements are in contact with each other, a plurality of rolling elements are densely located around any one rolling element, and a more effective load distribution for reducing the load can be performed. Durability can be improved. Furthermore, the work for holding the rolling elements, may If you put only into the gap between the outer ring and the inner ring, is simple.
【００１３】また、請求項４の構成によれば、外輪の内
周面と内輪の外周面との間に、転動体を入るだけ入れた
後、シール部材を嵌着すれば転動体の保持ができるの
で、溝に転動体を嵌め込む場合に比して作業は至って簡
単である、という効果も達成できる。 According to the fourth aspect of the present invention , the inner ring
Rolling element is inserted between the peripheral surface and the outer peripheral surface of the inner ring
Later, if the seal member is fitted, the rolling element can be held.
The work is much simpler than when rolling elements are fitted in grooves.
The simple effect can also be achieved.
【００１４】[0014]
【実施例】この発明の一実施例を以下図面に基づいて詳
述する。図１は、戸車用の回動輪１の分解斜視図であ
り、この回動輪１は例えば図２に示したような室内の間
仕切り２の下端に取付ける戸車３に使用される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. Figure 1 is an exploded perspective view of the rotary wheel 1 for door rollers, the rotary wheel 1 is for door roller 3 two used attached to the room of the lower end of the partition 2, as shown in FIG. 2, for example.
【００１５】上記回動輪１は、車輪となる外輪４と、こ
れの内側に位置して軸を通す内輪５と、これらの間に転
動可能に保持される多数の転動体と６…、外輪４の一側
面に嵌着固定されるシール部材７とで構成されている。The rotating wheel 1 includes an outer wheel 4 serving as a wheel, an inner wheel 5 located inside the outer wheel 4 and passing a shaft, and a number of rolling elements 6 and 7 held rotatably between the outer wheel 4 and the outer wheel. 4 and a seal member 7 fitted and fixed to one side surface.
【００１６】外輪４は、ＰＯＭ（ポリアセタール）等の
合成樹脂からなり、戸車３として必要な所定の厚みと形
を有する円板状に形成され、一側面から他側面にかけて
大径穴部８を形成し、この大径穴部８の底部８ａには、
他側面に開口する内輪遊嵌穴９を形成している。また上
記大径穴部８の一側面の開口縁には、大径穴部８よりも
大径で大径穴部８の底部８ａの厚みと同じ深さの嵌着段
部１０を形成している。The outer ring 4 is made of a synthetic resin such as POM (polyacetal), and is formed in a disk shape having a predetermined thickness and shape required for the door roller 3, and has a large-diameter hole portion 8 extending from one side to the other side. The bottom 8a of the large-diameter hole 8 has
An inner ring loose fitting hole 9 is formed on the other side surface. At the opening edge on one side surface of the large-diameter hole 8, a fitting step portion 10 having a diameter larger than that of the large-diameter hole 8 and having the same depth as the thickness of the bottom 8 a of the large-diameter hole 8 is formed. I have.
【００１７】前記内輪５は、金属製で、外輪４の厚みに
対応する短い筒状に形成されている。この内輪５の外周
面５ａと上記外輪４の大径穴部８の内周面４ａは、図示
したように溝がなく、幅方向に平坦な形状である。これ
ら外輪４の大径穴部８の内周面４ａと、内輪５の外周面
５ａとの間の略ドーナツ形の保持空間１１に、図３に示
したように前記転動体６…を保持する。The inner ring 5 is made of metal and formed in a short cylindrical shape corresponding to the thickness of the outer ring 4. Outer circumference of this inner ring 5
The surface 5a and the inner peripheral surface 4a of the large-diameter hole portion 8 of the outer ring 4 are shown in FIG.
As described above, there is no groove and the shape is flat in the width direction. this
And the inner circumferential surface 4a of the large-diameter hole portion 8 of Luo outer ring 4, the holding space 11 of substantially toroidal between the outer peripheral surface 5a of the inner ring 5, the retaining rolling elements 6 ... a as shown in FIG. 3 .
【００１８】この転動体６…は金属からなる球体で、上
記保持空間１１内に近いもの同士が相互に接触可能なよ
うに２列の千鳥状に入るものである。例えば幅Ｗ1 ７．
５mm、径Ｌ1 ２６mmの回動輪１で、保持空間１１の幅Ｗ
2 が５．９３mm、厚みＬ2 ３．１７５mmの場合、直径１
／８インチの転動体６…を使用し、周方向の一方の列に
１１個、そしてこれらの転動体６…が隣の列の転動体６
…の間に入るように１１個、合計２２個入るようにす
る。保持状態の展開図を示すと図４の通りである。１つ
の転動体６に対してその周囲にある４つの転動体６…が
点接触可能である。 The rolling elements 6 are spheres made of metal, and are arranged in two rows in a zigzag pattern so that objects close to the holding space 11 can contact each other . For example, width W1 7.
The rotating wheel 1 having a diameter of 5 mm and a diameter L1 of 26 mm has a width W of the holding space 11.
2 is 5.93 mm and thickness L2 is 3.175 mm, diameter 1
/ 8-inch rolling elements 6..., 11 of which are arranged in one circumferential row, and these rolling elements 6.
.., And 22 pieces in total. FIG. 4 shows a developed view of the holding state. One
The four rolling elements 6 surrounding the rolling element 6
Point contact is possible.
【００１９】なお、転動体６…の配列は２列ばかりでは
なく３列４列等でもよい。また図５に示したように転動
体６…を１個ずつ所定間隔おきに転動可能に保持する保
持部材１２を用いるなどして、各転動体６…相互が接触
しないように千鳥状に配列して保持するもよい。The arrangement of the rolling elements 6 is not limited to two, but may be three or four. As shown in FIG. 5, the rolling elements 6 are arranged in a staggered manner so that they do not come into contact with each other by using a holding member 12 for holding the rolling elements 6 in a rolling manner at predetermined intervals. It may be held.
【００２０】前記シール部材７は、ＰＯＭ（ポリアセタ
ール）等の合成樹脂製で、転動体６…を保持空間１１内
に保持した後、前記嵌着段部１０に嵌着固定し、図３に
示したように転動体６…の保持状態を確保するためのも
のである。その形状は、上記嵌合段部１０に嵌合対応す
る形の円板状体の中心に、前記内輪遊嵌穴９と同じ形の
内輪遊嵌穴７ａを有した形状である。外周縁には、嵌着
状態を保持するため内側面の方が大径となるような若干
の傾斜つけている。The sealing member 7 is made of a synthetic resin such as POM (polyacetal). After the rolling elements 6 are held in the holding space 11, they are fitted and fixed to the fitting step 10 and are shown in FIG. As described above, this is for securing the holding state of the rolling elements 6. Its shape is such that it has an inner ring loose fitting hole 7a having the same shape as the inner ring loose fitting hole 9 at the center of a disc-shaped body that is fitted to the fitting step 10. The outer peripheral edge is slightly inclined so that the inner surface has a larger diameter to maintain the fitted state.
【００２１】このシール部材７の嵌着により転動体６…
は、保持空間１１内において、外輪４の内周面４ａと内
輪５の外周面５ａ、および大径穴部８の底部８ａまたは
シール部材７と点接触した状態で保持される。点接触で
あるので抵抗は小さく、良好な回動が得られる。The rolling elements 6...
Are held in the holding space 11 in point contact with the inner peripheral surface 4a of the outer race 4 and the outer peripheral surface 5a of the inner race 5 and the bottom 8a of the large diameter hole 8 or the sealing member 7. Since it is a point contact, the resistance is small and good rotation is obtained.
【００２２】なお、転動体６…は図６に示したように保
持するもよい。すなわち保持空間１１を、前述のように
外輪４の大径穴部８によって形成するのではなく、内輪
５の外周面の両側縁に鍔状の立上がり部５ｂ，５ｂを形
成することによって形作るようにしている。組立は、こ
の保持空間１１に転動体６…を千鳥状に保持したのち外
輪４を嵌める。なお外輪４の両側面に、内輪５の両側面
を覆う被覆部を形成、または取付けて、内輪５を包むよ
うにするもよい。The rolling elements 6 may be held as shown in FIG. That is, the holding space 11 is not formed by the large-diameter hole 8 of the outer ring 4 as described above, but is formed by forming flange-shaped rising portions 5b, 5b on both side edges of the outer peripheral surface of the inner ring 5. ing. After assembling the rolling elements 6... In the holding space 11 in a staggered manner, the outer ring 4 is fitted. It is also possible to form or attach covering parts on both sides of the outer ring 4 to cover both sides of the inner ring 5 so as to wrap the inner ring 5.
【００２３】上述のように構成した回動輪１は、断面コ
字形の金具（図示せず）に軸支して戸車３に組み付けて
使用する。この回動輪１では、転動する転動体６…は外
輪４と内輪５との間の保持空間１１に位置して縦方向の
荷重を受けるも、転動体６…が周方向に２列で、しかも
一方の列の転動体６…が他方の列の転動体６…の間の隙
間に入るように、いわゆる千鳥状に配設されているの
で、荷重は複数箇所に分散される。しかもその分散は、
１個の転動体６にとって斜めの位置にある最も近い転動
体６…から順に千鳥状に行なわれる。The rotating wheel 1 constructed as described above is supported on a bracket (not shown) having a U-shaped cross section and used by being assembled to the door roller 3. In the rotating wheel 1, the rolling elements 6 rolling are positioned in the holding space 11 between the outer ring 4 and the inner ring 5 and receive a vertical load, but the rolling elements 6 are arranged in two rows in the circumferential direction. Moreover, since the rolling elements 6 in one row are arranged in a staggered manner so as to enter the gap between the rolling elements 6 in the other row, the load is distributed to a plurality of locations. And the dispersion is
The rolling elements 6 are arranged in a staggered order from the nearest rolling element 6 at an oblique position to one rolling element 6.
【００２４】したがって、一部のみに大きな荷重が掛か
らず、外輪４が樹脂ではあっても金属を用いたのと同等
またはそれ以上に高い耐久性を得ることができる。Therefore, a large load is not applied to only a part, and even if the outer race 4 is made of resin, it is possible to obtain durability equal to or higher than that of using metal.
【００２５】例えば、直径２６mm、幅７．５mmの回動輪
について、図６に示した従来構造のものと本願発明の構
造のものとの寿命の比較実験を、１個の回動輪に対して
２０Kgの荷重を掛けて行なった結果、次ような結果が得
られた。すなわち従来構造の回動輪（直径５／３２イン
チ×６球）の場合１，８５６，０３４回転であったのに
対し、本願発明の構造の回動輪（直径１／８インチ×２
２球）では５，５７７，０３２回転と、約３倍も寿命が
延びた。For example, with respect to a turning wheel having a diameter of 26 mm and a width of 7.5 mm, a comparison experiment of the life between the conventional structure shown in FIG. As a result, the following results were obtained. That is, in the case of the conventional rotating wheel (diameter of 5/32 inch × 6 balls), the rotation was 1,856,034 rotations, whereas in the case of the rotating wheel of the present invention (1/8 inch × 2 balls).
With 2 balls, 5,577,032 revolutions, the life was extended about three times.
【００２６】また転動体６…を周方向に２列で、しかも
一方の列の転動体６…が他方の列の転動体６…の間の隙
間に入るように配列したので、幅寸法を極力抑えること
ができる。このため、前述した戸車３のようにあまり幅
広にできない回動輪１を得るのに貢献する。The rolling elements 6 are arranged in two rows in the circumferential direction, and the rolling elements 6 of one row are arranged so as to enter the gap between the rolling elements 6 of the other row. Can be suppressed. For this reason, it contributes to obtaining the rotating wheel 1 that cannot be made too wide as in the above-described door roller 3.
【００２７】さらに、転動体６…を相互に接触するよう
に保持しているので、転動体６…を等間隔に隔てて保持
する保持器は不要であり、従来のように保持器の突起が
折れるというような事は一切なく、この点でも耐久性を
向上できる。また、転動体６…は相互に接触するので、
任意の１個の転動体６の周りには複数の転動体６…が密
に位置することになり、負荷軽減のためのより有効な荷
重の分散が行なえ、さらなる耐久性の向上が可能であ
る。さらに、転動体６…を保持する作業は、外輪４と内
輪５との間の保持空間１１に入るだけ入れればよく、簡
単である。Furthermore, since the rolling elements 6 are held so as to be in contact with each other, a cage for holding the rolling elements 6 at equal intervals is not required, and the projections of the holding elements are different from those of the prior art. There is no such thing as breaking, and durability can be improved in this respect as well. Since the rolling elements 6 contact each other,
A plurality of rolling elements 6 are densely located around any one rolling element 6, so that more effective load distribution for reducing the load can be performed and the durability can be further improved. . Further, the operation of holding the rolling elements 6... May be simply inserted into the holding space 11 between the outer ring 4 and the inner ring 5 and is simple.
【００２８】しかも、従来の回動輪では転動体６…が転
動するための溝を内輪５に形成する必要があったが、上
述の構成によればその溝を形成しないので、製造が容易
となり、また鋼球は安価であるので、手間もコストも低
減できる。[0028] Moreover, although the conventional round wheel it is necessary to form a groove for the rolling elements 6 ... to roll on the inner ring 5, does not form a groove in its According to the configuration described above, easy to manufacture In addition, since the steel ball is inexpensive, labor and cost can be reduced.
【図面の簡単な説明】[Brief description of the drawings]
【図１】 回動輪の分解斜視図。FIG. 1 is an exploded perspective view of a rotating wheel.
【図２】 使用状態の斜視図。FIG. 2 is a perspective view of a use state.
【図３】 縦断面図。FIG. 3 is a longitudinal sectional view.
【図４】 展開図。FIG. 4 is a development view.
【図５】 他の例の展開図。FIG. 5 is a development view of another example.
【図６】 他の例の縦断面図。FIG. 6 is a longitudinal sectional view of another example.
【図７】 従来技術の一部断面正面図。FIG. 7 is a partial cross-sectional front view of a conventional technique.
【図８】 従来技術の一部断面正面図。FIG. 8 is a partial cross-sectional front view of a conventional technique.
【符号の説明】 １…回動輪 ４…外輪 ５…内輪 ６…転動体７…シール部材 ７ａ…内輪遊嵌穴 ８…大径穴部 ９…内輪遊嵌穴 １１…保持空間[Description of Signs] 1 ... Rotating wheel 4 ... Outer ring 5 ... Inner ring 6 ... Rolling element7 ... Seal member 7a: Inner ring loose fitting hole 8 Large-diameter hole 9 ... Inner ring loose fitting hole 11 ... holding space
Claims (4)
の転動体を保持した回動輪であって、上記転動体を、周
方向に複数列で配列するとともに、隣り合う列のうちの
一方の転動体が他方の列の転動体の間の隙間に入るよう
に配置した回動輪。1. A rotating wheel holding a plurality of rolling elements between a rotating outer ring and an inner ring passing through a shaft, wherein the rolling elements are arranged in a plurality of rows in a circumferential direction, and are arranged in adjacent rows. A rotating wheel arranged so that one of the rolling elements enters a gap between the rolling elements in the other row.
した請求項１記載の回動輪。2. The rotating wheel according to claim 1, wherein said rolling elements are held in contact with each other.
ころがり軸受であって、上記転動体を、周方向に複数列
で配列するとともに、隣り合う列のうちの一方の転動体
が他方の列の転動体の間の隙間に入るように配置したこ
ろがり軸受。3. A rolling bearing in which a plurality of rolling elements are held between inner and outer races, wherein the rolling elements are arranged in a plurality of rows in a circumferential direction, and one of the rolling elements in an adjacent row is arranged in a row. A rolling bearing arranged so as to enter a gap between rolling elements in the other row.
した請求項３記載のころがり軸受。4. The rolling bearing according to claim 3, wherein said rolling elements are held in contact with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3199898A JP2939564B2 (en) | 1998-01-28 | 1998-01-28 | Rotating wheel for door car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3199898A JP2939564B2 (en) | 1998-01-28 | 1998-01-28 | Rotating wheel for door car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11210746A true JPH11210746A (en) | 1999-08-03 |
| JP2939564B2 JP2939564B2 (en) | 1999-08-25 |
Family
ID=12346590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3199898A Expired - Fee Related JP2939564B2 (en) | 1998-01-28 | 1998-01-28 | Rotating wheel for door car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2939564B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100855735B1 (en) | 2006-12-29 | 2008-09-03 | 세메스 주식회사 | Rotating apparatus |
| JP6208840B1 (en) * | 2016-11-04 | 2017-10-04 | 錢立生 | Cart roller unit |
| WO2019077670A1 (en) * | 2017-10-17 | 2019-04-25 | 日鍛バルブ株式会社 | Multi-row ball bearing and manufacturing method therefor |
| JP7003369B1 (en) * | 2021-01-05 | 2022-02-10 | 泰一 岡田 | Ball bearings |
-
1998
- 1998-01-28 JP JP3199898A patent/JP2939564B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100855735B1 (en) | 2006-12-29 | 2008-09-03 | 세메스 주식회사 | Rotating apparatus |
| JP6208840B1 (en) * | 2016-11-04 | 2017-10-04 | 錢立生 | Cart roller unit |
| JP2018070094A (en) * | 2016-11-04 | 2018-05-10 | 錢立生 | Roller unit for cart |
| WO2019077670A1 (en) * | 2017-10-17 | 2019-04-25 | 日鍛バルブ株式会社 | Multi-row ball bearing and manufacturing method therefor |
| JPWO2019077670A1 (en) * | 2017-10-17 | 2020-11-05 | 日鍛バルブ株式会社 | Double row ball bearings and their manufacturing methods |
| JP7003369B1 (en) * | 2021-01-05 | 2022-02-10 | 泰一 岡田 | Ball bearings |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2939564B2 (en) | 1999-08-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |