JPS6121608Y2 - - Google Patents

Description

【考案の詳細な説明】 １ 考案の技術分野 本考案は自動調心を有する回転装置に係り、特
に配設されるころがり軸受の改良に関する。[Detailed Description of the Invention] 1. Technical Field of the Invention The present invention relates to a rotating device having self-centering, and particularly relates to an improvement of a rolling bearing provided therein.

２ 従来技術とその問題点 従来の回転装置の軸受は第１図に示す構造のも
のが普通一般に市販されているものである。すな
わち回転体１に固定されて回転体とともに回転す
る内輪２と、これに対向して支持体４に固定され
た外輪３と、この外輪３と前記内輪２とにそれぞ
れ形成され内外輪が配置されたとき断面ほぼ円形
になる溝５，６を有し、この溝部に挾持された複
数個の鋼球７からなつている。2. Prior Art and its Problems A conventional bearing for a rotating device has the structure shown in FIG. 1 and is generally commercially available. That is, an inner ring 2 is fixed to the rotating body 1 and rotates together with the rotating body, an outer ring 3 is fixed to the supporting body 4 opposite to the inner ring 2, and inner and outer rings are formed on the outer ring 3 and the inner ring 2, respectively. It has grooves 5 and 6 which become approximately circular in cross section when the steel ball is bent, and consists of a plurality of steel balls 7 held in the grooves.

このように形成された軸受では、内輪、外輪と
鋼球との間に間隙があるために調心機能はない。 A bearing formed in this manner does not have an alignment function because there is a gap between the inner ring, outer ring, and steel balls.

この点を解決するものとして第２図のような構
造のものがある。すなわち回転体１１に固定され
た内輪１２と、これを支持する支持体１３と、前
記内輪の上下面の外側端部にそれぞれ２列に並ん
で前記支持体１３の内面と内輪１２とで挾持され
る複数個の鋼球１４，１５とから成つている。前
記内輪の外側の上下の端面部にはそれぞれ回転軸
に対して一定の角度をもつ傾斜面１６，１７が形
成され、前記支持体１３は内面は回転軸と直角な
面１８と平行な面１９とを有し、前記２列の鋼球
の一方１５は支持体内面の直交する面１８，１９
と内輪の傾斜面１７とに接し、鋼球の他方１４は
支持体の回転軸に平行な面１９と内輪の傾斜面１
６とに接し、さらに回転軸に直交し支持体の内面
１８に対向する面２１をもち支持体上に配置され
たブロツク２０の面２１にも接している。 There is a structure as shown in FIG. 2 that solves this problem. That is, there is an inner ring 12 fixed to the rotary body 11, a support 13 that supports the inner ring, and two rows of inner rings arranged at the outer ends of the upper and lower surfaces of the inner ring and held between the inner ring 12 and the inner ring of the support 13. It consists of a plurality of steel balls 14, 15. Inclined surfaces 16 and 17 having a certain angle with respect to the rotation axis are formed on the upper and lower outer end surfaces of the inner ring, respectively, and the inner surface of the support body 13 has a surface 19 parallel to a surface 18 perpendicular to the rotation axis. and one of the two rows of steel balls 15 has perpendicular surfaces 18 and 19 on the inner surface of the support.
and the inclined surface 17 of the inner ring, and the other steel ball 14 is in contact with the surface 19 parallel to the rotation axis of the support and the inclined surface 1 of the inner ring.
6, and also has a surface 21 which is perpendicular to the axis of rotation and faces the inner surface 18 of the support, and is also in contact with the surface 21 of the block 20 disposed on the support.

この軸受ではブロツクによつて回転軸に平行に
支持体の底面に向つて鋼球が押圧されているの
で、鋼球列から図の矢印の方向に内輪は押圧され
ることになり、回転時には調心作用を生ずるもの
である。しかしながらこの軸受を実際に使用した
場合には、回転体の回転軸が本来一致するべきは
ずの支持体の中心軸からなずれ、円錐状に運動す
るいわゆる駒揺れ現象が生ずる不具合が起こる。 In this bearing, the steel balls are pressed by the block toward the bottom of the support parallel to the rotation axis, so the inner ring is pressed from the steel ball array in the direction of the arrow in the figure, and when rotating, the inner ring is not adjusted. It causes cardiac effects. However, when this bearing is actually used, a problem arises in that the axis of rotation of the rotating body deviates from the central axis of the supporting body with which it should originally coincide, resulting in a so-called swinging phenomenon in which the rotating body moves in a conical shape.

このような駒揺れ現象を起さない軸受としては
第３図に示すようなものが考えられる。すなわち
内輪３０に形状を改善し、これを支持する支持体
３１とブロツク３２および複数個の鋼球列３３，
３４とは前記列と同じ構造のものである。前記内
輪３０の外側の端面部は上下ともそれぞれ環状の
凹部３５，３６が形成され、それぞれの底面３
７，３８は支持体の底面３９とこに対向するブロ
ツク底面４０とに平行である。２列の鋼球列の１
方３３は前記内輪の面３７とブロツクの面４０と
に接し他方３４は前記内輪の面３８と支持体の面
３９とに接している。 A bearing as shown in FIG. 3 can be considered as a bearing that does not cause such a piece rocking phenomenon. That is, the shape of the inner ring 30 is improved, a support body 31 and a block 32 supporting it, and a plurality of steel ball rows 33,
34 has the same structure as the above column. The outer end surface of the inner ring 30 has annular recesses 35 and 36 formed on both the upper and lower sides, and the bottom surface 3 of each
7, 38 are parallel to the bottom surface 39 of the support and the opposite bottom surface 40 of the block. 1 of 2 rows of steel balls
One side 33 is in contact with the inner ring surface 37 and the block surface 40, and the other side 34 is in contact with the inner ring surface 38 and the support surface 39.

このような軸受では常にブロツク前記２対の面
３７と４０および３８と３９とを平行にしようと
力を加えているため、前記第２図に示し軸受でお
こつたような駒揺れ現象はおこらなくなる。しか
しながらこの軸受を使用するとき温度上昇する作
業においては、軸受部は昇温して熱膨張し内輪な
らびに鋼球が膨張して焼きつきが生ずるという不
都合が発生し、さらには内輪の回転軸に平行な面
３７Ａと鋼球３３との間および内輪の回転軸に平
行な面３８Ａと鋼球３４との間にすきまがあるた
めに、動作時にはがたが大きいという欠点があ
る。 In such a bearing, force is always applied to make the two pairs of surfaces 37 and 40 and 38 and 39 of the block parallel, so the piece swinging phenomenon that occurs in the bearing shown in FIG. 2 does not occur. It disappears. However, when this bearing is used in work where the temperature rises, the bearing part rises in temperature and expands thermally, causing the inner ring and steel balls to expand and seize. Since there is a gap between the surface 37A and the steel ball 33 and between the surface 38A parallel to the rotation axis of the inner ring and the steel ball 34, there is a drawback that there is a large backlash during operation.

３ 考案の目的 本考案はこれらの点にかんがみなされたもので
あつて、前記の欠点を除去し、広い温度範囲にわ
たつて調心効果が大きく駒揺れ現象もおこさない
経済的な軸受を備えた自動調心装置を提供するも
のである。3. Purpose of the invention The present invention has been developed in consideration of these points, and has eliminated the above-mentioned drawbacks and is equipped with an economical bearing that has a large alignment effect over a wide temperature range and does not cause the piece swinging phenomenon. A self-aligning device is provided.

４ 考案の構成 本考案の装置に用いられる軸受は回転体の軸を
固定する内輪とこれを支持する支持部材との間に
複数列の剛性の高い球が配置され、前記内輪の外
側の端面部の一方がかさ状の傾斜面に形成され、
他方に回転軸に直角な底面を有する環状の凹部が
形成されて、前記球列やそれぞれ前記内輪の傾斜
面と支持部材の内面及び前記内輪の凹部底面と支
持部材内面に接触していることを特徴とする。4. Structure of the invention In the bearing used in the device of the invention, multiple rows of highly rigid balls are arranged between an inner ring that fixes the shaft of a rotating body and a support member that supports this, and the outer end surface of the inner ring One side is formed into an umbrella-shaped inclined surface,
An annular recess having a bottom surface perpendicular to the rotational axis is formed on the other side, and is in contact with the array of balls, the inclined surface of the inner ring and the inner surface of the support member, and the bottom surface of the recess of the inner ring and the inner surface of the support member, respectively. Features.

５ 考案の実施例 以下本考案の実施例を図面を参照して説明す
る。第４図は本考案の装置を示す。４１は回転体
５５の軸に固定される内輪にして、７２は支持
部、４３，４４は前記内輪４１と支持部４２との
間に挾持される２列の鋼球であつて、４５は鋼球
４３の上方に配置されるブロツクである。前記内
輪４１の外側の端面部の一方は回転軸に対して傾
斜した面を有するかさ状の端面４６に形成され、
外側の他方の端面部には回転軸に直角な底面４７
とこれに直交する側面４８を有する環状の凹部４
９が形成されている。支持部４２の内側の鋼球列
４３の上に配置されたブロツク４５と支持部４２
との上面に板ばね５０が固着されている。5 Embodiments of the invention Examples of the invention will be described below with reference to the drawings. FIG. 4 shows the device of the invention. 41 is an inner ring fixed to the shaft of the rotating body 55, 72 is a support part, 43 and 44 are two rows of steel balls held between the inner ring 41 and the support part 42, and 45 is a steel ball. This is a block placed above the ball 43. One of the outer end surfaces of the inner ring 41 is formed into an umbrella-shaped end surface 46 having a surface inclined with respect to the rotation axis,
The other end surface on the outside has a bottom surface 47 perpendicular to the rotation axis.
and an annular recess 4 having a side surface 48 orthogonal thereto.
9 is formed. The block 45 arranged on the steel ball row 43 inside the support part 42 and the support part 42
A leaf spring 50 is fixed to the upper surface of the.

このような軸受では一方の鋼球列４３は内輪の
傾斜面４６と支持部の内側面５１とブロツクの底
面５３とに接し、他方の鋼球列４４は内輪の凹部
底面４７と支持部内側の底面５２と側面５１とに
接している。したがつて板ばね５０によつて鋼球
列４３はもう一方の鋼球列４４に向つて押しつけ
られているので、図の矢印のように内輪は鋼球列
によつて押圧力をうけ、これによつて回転時には
自動調心がなされることになる。一方板ばねは支
持体の底面５２と内輪の凹部の底面４７とを鋼球
列４４を介在させて常に平行に向い合うように力
を加えているので、回転時に回転体に駒揺れ現象
を起こすことはない。からに作業が高温作業とな
り軸受部が昇温し内輪や鋼球等が膨張しても、鋼
球列４３側においては板ばねで吸収され、他方の
鋼球列４４側においては回転軸と直角方向に鋼球
と凹部との間にすきまがあるために、それぞれ温
度上昇による膨張の影響をうけることがない。 In such a bearing, one steel ball row 43 is in contact with the inclined surface 46 of the inner ring, the inner surface 51 of the support section, and the bottom surface 53 of the block, and the other steel ball row 44 is in contact with the bottom surface 47 of the recess of the inner ring and the inner side of the support section. It is in contact with the bottom surface 52 and the side surface 51. Therefore, since the steel ball row 43 is pressed toward the other steel ball row 44 by the leaf spring 50, the inner ring receives a pressing force from the steel ball row as shown by the arrow in the figure, and this This results in self-alignment during rotation. On the other hand, the leaf spring applies force so that the bottom surface 52 of the support body and the bottom surface 47 of the recessed part of the inner ring always face parallel to each other with the steel ball array 44 interposed between them, which causes a swaying phenomenon in the rotating body when rotating. Never. Even if the work starts at a high temperature and the temperature of the bearing increases and the inner ring, steel balls, etc. expand, it will be absorbed by the leaf spring on the steel ball row 43 side, and the steel ball row 44 side will absorb the expansion at right angles to the rotation axis. Since there is a gap between the steel ball and the recess in the direction, they are not affected by expansion due to temperature rise.

このようにこの軸受を配設した装置を用いる
と、動作時に昇温し部品が熱膨張しても焼付きお
よび駒揺れ現象を起こさず、自動調心性を十分に
発揮することが出来る。 When a device equipped with this bearing is used in this manner, even if the temperature rises during operation and the components thermally expand, seizure and piece shaking phenomena do not occur, and self-aligning properties can be fully demonstrated.

６ 考案の変形例 前記に図示した実施例以外に、内輪と支持部と
に挾持される鋼球列は２列でなく複数列のもので
もよく、またブロツクに押圧力を加えた板ばねの
代りにブロツクに鋼球列を押しつける力をあたえ
る他の手段を用いてもよい。さらに内輪を回転体
に固する代りに内輪を支持体に固定し、そのまわ
りに回転体が固定された外輪を配設した構造のも
のでも同様な効果を示す。6 Modifications of the invention In addition to the embodiments illustrated above, the steel ball rows held between the inner ring and the support portion may be of multiple rows instead of two, and instead of a leaf spring that applies a pressing force to the block. Other means of applying force to press the steel ball array against the block may also be used. Furthermore, instead of fixing the inner ring to the rotating body, a structure in which the inner ring is fixed to a support body and an outer ring around which the rotating body is fixed has the same effect.

７ 考案の効果 上述したように本考案の装置は構成が単純にし
て、動作時に良好な調心機能を果たすとともに動
作時に昇温しても焼付きを起こさず、駒揺れ現象
も発生せず、実用上きわめて有用なものである。7. Effects of the invention As mentioned above, the device of the present invention has a simple structure, performs a good alignment function during operation, does not cause seizing even when the temperature rises during operation, does not cause the piece shaking phenomenon, It is extremely useful in practice.

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

第１図、第２図および第３図は従来の軸受の断
面図、第４図は本考案の１実施例の断面図であ
る。 ４１……内輪、４２……支持部、４３，４４…
…鋼球列、４５……ブロツク、４６……内輪端部
の傾斜面、４９……内輪端部の凹部、５０……板
ばね。 1, 2, and 3 are cross-sectional views of conventional bearings, and FIG. 4 is a cross-sectional view of one embodiment of the present invention. 41... Inner ring, 42... Support part, 43, 44...
... Steel ball row, 45 ... Block, 46 ... Inclined surface at the end of the inner ring, 49 ... Recess at the end of the inner ring, 50 ... Leaf spring.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 回転体の軸を固定する内輪と、この内輪を支持
する支持部材と、この支持部材と前記内輪との間
に挾持される複数列の剛性の高い球とを備え、前
記内輪は外側の端面部の一方に回転軸と角度をも
つたかさ状の傾斜面が形成され、他方に回転軸と
直角な底面を有する環状の凹部が形成され、前記
支持部材は箱状にして内面が回転軸に対し直角な
面と平行な面とが直交してなり、前記球列の１つ
は前記内輪のかさ状の斜面と前記支持部材の内側
面とに接し、他の球列は前記内輪の凹部底面と前
記支持部材の内面とに接し、前記球列を回転軸に
平行に支持部材底面に向つて押しつける締付け部
材が配設されていることを特徴とする自動調心装
置。 It includes an inner ring that fixes the shaft of the rotating body, a support member that supports the inner ring, and a plurality of rows of highly rigid balls that are held between the support member and the inner ring, and the inner ring has an outer end surface. A bulk-shaped inclined surface having an angle with the rotation axis is formed on one side of the support member, and an annular recess with a bottom surface perpendicular to the rotation axis is formed on the other side. A right-angled surface and a parallel surface are perpendicular to each other, one of the rows of balls is in contact with the umbrella-shaped slope of the inner ring and the inner surface of the support member, and the other row of balls is in contact with the bottom surface of the recess of the inner ring. A self-aligning device characterized in that a tightening member is disposed in contact with the inner surface of the support member and presses the ball array toward the bottom surface of the support member parallel to the rotation axis.