JPH0610622U - Return path for circulating linear motion roller bearings - Google Patents
Return path for circulating linear motion roller bearingsInfo
- Publication number
- JPH0610622U JPH0610622U JP6047392U JP6047392U JPH0610622U JP H0610622 U JPH0610622 U JP H0610622U JP 6047392 U JP6047392 U JP 6047392U JP 6047392 U JP6047392 U JP 6047392U JP H0610622 U JPH0610622 U JP H0610622U
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- bearing
- resin pipe
- roller
- linear motion
- 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
Links
Landscapes
- Bearings For Parts Moving Linearly (AREA)
Abstract
(57)【要約】
【目的】 循環式直動コロ軸受において、帰還路に用い
る合成樹脂製パイプの円周方向の肉厚の差を少なくし
て、成形しやすくする。
【構成】 合成樹脂製パイプの断面四角穴の四辺に、複
数の潤滑油の逃げ溝を設ける。
(57) [Summary] [Purpose] In a circulating linear motion roller bearing, the difference in wall thickness in the circumferential direction of the synthetic resin pipe used for the return path is reduced to facilitate molding. [Structure] A plurality of lubricating oil escape grooves are provided on the four sides of a square hole of a synthetic resin pipe.
Description
【０００１】[0001]
本考案は、循環式直動コロ軸受の帰還路の構造に関する。 The present invention relates to a structure of a return path of a circulating type linear motion roller bearing.
【０００２】[0002]
図２は、従来の循環式直動コロ軸受の構造を示す部分破断斜視図、図３は、図 ２の断面図である。 軸受２は、二つのＶ溝２ｃ，２ｃを有する軸受部２ａと、軸受部２ａの両側に 取り付けられた二つのエンドキャップ２ｂと、軸受部２ａ内を通って二つのエン ドキャップ２ｂの内部に各々設けられた、前記二つのＶ溝２ｃと一端が接続する 図示しない二つの旋回部の他端を繋ぐ二本の合成樹脂製パイプ１から構成され、 レール３を跨ぐようにレール３に載置されており、レール３に設けられた二つの Ｖ溝３ａと軸受部２ａに設けられた二つのＶ溝２ｃによって、断面四角形の保持 器付きコロ４の二つの通路が構成されている。 そして、前記通路と前記旋回部と合成樹脂製パイプ１内は、複数の保持器付コ ロ４で満たされている。 2 is a partially cutaway perspective view showing the structure of a conventional circulating type linear motion roller bearing, and FIG. 3 is a sectional view of FIG. The bearing 2 includes a bearing portion 2a having two V-grooves 2c and 2c, two end caps 2b attached to both sides of the bearing portion 2a, and two end caps 2b passing through the inside of the bearing portion 2a. One end is connected to each of the two V-grooves 2c that are respectively provided. It is composed of two synthetic resin pipes 1 that connect the other ends of two turning parts (not shown), and is placed on the rail 3 so as to straddle the rail 3. The two V-grooves 3a provided on the rail 3 and the two V-grooves 2c provided on the bearing portion 2a form two passages of the roller 4 with a cage having a rectangular cross section. The passage, the swivel portion, and the synthetic resin pipe 1 are filled with a plurality of holder-equipped rollers 4.
【０００３】 軸受２を、レール３上を移動させると、前記通路にある保持器付コロ４は、前 記通路を通って一方のエンドキャップ２ｂの内部に設けられた前記通路に接続し ている旋回部を通ることによって方向を変えて、合成樹脂製パイプ１よりなる帰 還路を通って他方のエンドキャップ２ｂに向かい、他方のエンドキャップ２ｂの 内部に設けられた旋回部を通ることによって再び方向を変えて、元の通路に戻り 、以下これを繰り返す。When the bearing 2 is moved on the rail 3, the roller 4 with the retainer in the passage is connected to the passage provided inside the one end cap 2b through the passage. The direction is changed by passing through the swivel portion, and the other end cap 2b is moved toward the other end cap 2b through the return path formed of the synthetic resin pipe 1, and again by passing through the swivel portion provided inside the other end cap 2b. Change direction, return to the original passage and repeat this process.
【０００４】 一般に、軸受部２ａとレール３は強度及び精度上の問題から金属で作られるた め、レール３に設けられたＶ溝３ａと軸受部２ａに設けられたＶ溝２ｃ、及び、 保持器付コロ４にはグリースを塗る必要がある。In general, since the bearing portion 2a and the rail 3 are made of metal in view of strength and accuracy, the V groove 3a provided in the rail 3 and the V groove 2c provided in the bearing portion 2a, and the holding It is necessary to apply grease to the roller 4 with a device.
【０００５】 従って、Ｖ溝３ａと２ｃ、及び、保持器付コロ４にグリースが塗られているた め、保持器付コロ４が循環すると、前記グリースが合成樹脂製パイプ１内にまで 広がってしまい、合成樹脂製パイプ１を詰まらせてしまうことがあり、保持器付 コロ４の循環を妨げてしまう、という問題があった。 そこで図４に示すように、合成樹脂製パイプ１の内側の断面四角穴の四つの角 に、それぞれ潤滑油の逃げ溝１ｂを設けて、合成樹脂製パイプ１内に広がってき たグリースを潤滑油の逃げ溝１ｂに逃がしていた。Therefore, since the V grooves 3a and 2c and the roller 4 with the retainer are coated with grease, when the roller 4 with the retainer circulates, the grease spreads into the synthetic resin pipe 1. Therefore, there is a problem that the synthetic resin pipe 1 may be clogged and the circulation of the roller 4 with the retainer may be hindered. Therefore, as shown in FIG. 4, lubricating oil relief grooves 1b are provided at the four corners of the square hole of the cross section inside the synthetic resin pipe 1, respectively, and the grease that has spread inside the synthetic resin pipe 1 It escaped to the escape groove 1b.
【０００６】[0006]
しかし、合成樹脂製パイプ１の内側の断面四角穴の角に潤滑油の逃げ溝１ｂを 設けると、図４に示すＦ部が極端に薄肉になってしまい、合成樹脂製パイプ１を 成形するのが難しく、また、合成樹脂製パイプ１の強度の低下の原因でもあった 。 また、合成樹脂製パイプ１の厚肉部と薄肉部での肉厚の差が大きいため、外径 に対する内径の同軸度が成形時にずれることが多かった。 However, when the escape groove 1b for the lubricating oil is provided at the corner of the square hole having the cross section inside the synthetic resin pipe 1, the F portion shown in FIG. 4 becomes extremely thin, and the synthetic resin pipe 1 is molded. However, it was also a cause of the decrease in strength of the synthetic resin pipe 1. Further, since the difference in thickness between the thick portion and the thin portion of the synthetic resin pipe 1 is large, the coaxiality of the inner diameter with respect to the outer diameter often shifts during molding.
【０００７】 Ｆ部を厚肉にしようとすると、合成樹脂製パイプ１の外形を大きくしなければ ならず、そうすると軸受２も必然的に大きくなってしまうため、材料費が嵩み、 また、循環式直動コロ軸受全体も大きくなってしまい、小型の循環式直動コロ軸 受を作ることができなかった。If the F portion is to be made thick, the outer shape of the synthetic resin pipe 1 must be increased, which inevitably increases the size of the bearing 2, which increases the material cost and the circulation. The entire type linear motion roller bearing also became large, and it was not possible to make a small circulating linear motion roller bearing.
【０００８】[0008]
本考案は、合成樹脂製パイプの内側の断面四角穴の四辺の部分に、複数の潤滑 油の逃げ溝を設けることによって、上記の課題を解決する。 The present invention solves the above problems by providing a plurality of lubricating oil escape grooves on the four sides of a square hole having a cross section inside a synthetic resin pipe.
【０００９】[0009]
合成樹脂製パイプの内側の断面四角穴の四辺の各部分に、複数の逃げ溝を設け ることにより、図４に示すＦ部が極端に薄肉になることが防げると同時に、複数 の逃げ溝内にグリースが溜まることによって、前記断面四角穴内での保持器付コ ロの移動がスムーズになる。 By providing a plurality of relief grooves on each of the four sides of the square hole with a cross section inside the synthetic resin pipe, it is possible to prevent the F portion shown in FIG. By collecting grease in the inside, the movement of the roller with cage becomes smooth within the square hole of the cross section.
【００１０】[0010]
図１は本考案による、循環式直動コロ軸受の帰還路に用いる合成樹脂製パイプ の断面図である。 １は、ＡＢＳ樹脂で作られた円筒形で内側に断面四角形の穴を有するパイプで ある。断面四角形をした穴の四辺には、前記穴の長さと同じ長さを有する複数の 潤滑油の逃げ溝１ａが設けられている。 FIG. 1 is a sectional view of a synthetic resin pipe used for the return path of a circulating linear motion roller bearing according to the present invention. Reference numeral 1 is a cylindrical pipe made of ABS resin and having a hole with a square cross section inside. A plurality of lubricating oil escape grooves 1a having the same length as the hole are provided on the four sides of the hole having a quadrangular cross section.
【００１１】 グリースを塗られた保持器付コロ４が前記パイプ１を通ると、保持器付コロ４ に塗られたグリースが前記パイプ１の内壁に拭い取られ、更に、保持器付コロ４ が次々と前記パイプ１内を通過することによって、逃げ溝１ａの中にグリースが 入り、グリースによる保持器付コロ４の前記パイプ１内の通過を妨げることを防 げる。When the roller 4 with the retainer coated with grease passes through the pipe 1, the grease coated on the roller 4 with the retainer is wiped off the inner wall of the pipe 1, and the roller 4 with the retainer is removed. By passing through the pipe 1 one after another, grease can be prevented from entering the escape groove 1a and obstructing the passage of the roller 4 with the retainer in the pipe 1 by the grease.
【００１２】 そして、ある程度グリースが溝１ａ内に溜まり、溝１ａ内よりはみ出すと、後 から前記パイプ１内を通過する保持器付コロ４によって押されて、グリースは溝 １ａ内を伸ばされていき、前記パイプ１ａ内での保持器付コロ４の移動がスムー ズになる。 万一、溝１ａの全てがグリースで満たされてしまった場合は、エンドキャップ ２ｂの旋回部を通って、グリースは元のレールのＶ溝３ａ、または軸受部のＶ溝 ２ｃに戻るので、問題はない。Then, when the grease is accumulated in the groove 1a to some extent and protrudes from the groove 1a, it is pushed by a roller 4 with a retainer that passes through the pipe 1 later, and the grease is extended in the groove 1a. The movement of the roller 4 with the retainer in the pipe 1a becomes smooth. If all of the groove 1a is filled with grease, the grease will return to the V-groove 3a of the original rail or the V-groove 2c of the bearing through the swivel part of the end cap 2b, which is a problem. There is no.
【００１３】 一般に、軸受のエンドキャップ２ｂも合成樹脂で作られることが多いので、エ ンドキャップ２ｂの旋回部にも前記の溝１ａを設けると、旋回部内での保持器付 コロ４の移動もスムーズに行える。Generally, the end cap 2b of the bearing is also often made of synthetic resin. Therefore, if the groove 1a is provided in the swivel portion of the end cap 2b, the movement of the roller 4 with the retainer in the swivel portion is also prevented. It can be done smoothly.
【００１４】 一方、前記パイプ１ａを成形する場合、従来と同じ外径の大きさで、図４に示 すような極端な肉薄部Ｆが無いので、成形がしやすく、しかも、前記パイプ１ａ の外形に対する内側の断面四角穴の同軸度がずれにくく精度が出て、しかも、軸 受２の大きさは従来と同じでよいことになる。On the other hand, when the pipe 1a is molded, it has the same outer diameter as the conventional one and does not have the extremely thin portion F as shown in FIG. The coaxiality of the square hole on the inner side with respect to the outer shape does not easily deviate, resulting in high accuracy, and the size of the bearing 2 may be the same as the conventional one.
【００１５】[0015]
上記のように、本考案による循環式直動コロ軸受は、帰還路に用いる合成樹脂 製パイプの内側の断面四角穴の四辺に、複数の潤滑油の逃げ溝を設けることで、 軸受を従来のものより大きくすることなく、グリースが前記パイプ内で詰まって 保持器付コロの移動を妨げることを防げると同時に、前記パイプ内での保持器付 コロの移動をスムーズにする。 As described above, in the circulating linear motion roller bearing according to the present invention, by providing a plurality of lubricant escape grooves on the four sides of the square hole of the cross section inside the synthetic resin pipe used for the return path, Without making it larger than that, grease can be prevented from clogging in the pipe and obstructing the movement of the roller with cage, and at the same time, the movement of the roller with cage in the pipe can be made smooth.
【００１６】 また、前記パイプの内側の断面四角穴の四隅に潤滑油の逃げ溝を設ける場合に 比べると、成形がしやすく、前記パイプの外径に対する内径の精度が出しやすい 。 更に、潤滑油の逃げ溝の数と大きさも、前記パイプの内側の断面四角穴の四辺 の長さの範囲で自由に設定できるので、設計が従来に比べて容易である。Further, as compared with the case where the escape grooves for the lubricating oil are provided at the four corners of the square hole in the inside of the pipe, the molding is easier and the accuracy of the inner diameter with respect to the outer diameter of the pipe is easier to obtain. Furthermore, the number and size of the escape grooves for the lubricating oil can be freely set within the range of the lengths of the four sides of the square hole inside the pipe, which makes the design easier than before.
【００１７】 上記実施例では、合成樹脂製パイプをＡＢＳ樹脂製としたが、本考案はこれに 限定するものではなく、ポリアセタール等の耐磨耗性のよい合成樹脂でも構わな い。In the above embodiments, the synthetic resin pipe is made of ABS resin, but the present invention is not limited to this, and a synthetic resin having good abrasion resistance such as polyacetal may be used.
【図面の簡単な説明】[Brief description of drawings]
【図１】本考案による循環式直動コロ軸受の帰還路に用
いる合成樹脂製パイプの一例を示す断面図である。FIG. 1 is a sectional view showing an example of a synthetic resin pipe used for a return path of a circulating linear motion roller bearing according to the present invention.
【図２】従来の循環式直動コロ軸受の一例を示す部分破
断斜視図である。FIG. 2 is a partially cutaway perspective view showing an example of a conventional circulating linear motion roller bearing.
【図３】図２に示す循環式直動コロ軸受のＩＩＩ−ＩＩ
Ｉ線に沿う断面図である。FIG. 3 is a III-II of the circulating linear motion roller bearing shown in FIG.
It is sectional drawing which follows the I line.
【図４】従来の循環式直動コロ軸受の帰還路に用いる合
成樹脂製パイプに潤滑油の逃げ溝を設けた一例を示す断
面図である。FIG. 4 is a cross-sectional view showing an example in which a lubricating oil escape groove is provided in a synthetic resin pipe used for a return path of a conventional circulation type linear motion roller bearing.
１ 循環式直動コロ軸受の帰還路に用いる合成樹脂製
パイプ ２ 軸受 ３ レール ４ 保持器付コロ1 Synthetic resin pipe used for the return path of circulating linear motion roller bearing 2 Bearing 3 Rail 4 Roller with cage
Claims (1)
部の両側に取り付けられ前記Ｖ溝と一端が接続する旋回
部を内部に有する二つのエンドキャップと、前記軸受部
の内部を通り前記二つのエンドキャップの旋回部の他端
を繋ぐ内部に保持器付コロが通ることができる断面四角
穴が空いている合成樹脂製パイプよりなる軸受が、前記
金属製軸受部のＶ溝と接続することで保持器付コロの通
路を構成できるＶ溝を有するレール上に載置されて、複
数の保持器付コロが前記通路と前記合成樹脂製パイプの
中を循環することで、前記軸受が前記レール上を移動す
る循環式直動コロ軸受において、前記合成樹脂製パイプ
内の断面四角穴の四辺に、複数の潤滑油の逃げ溝を設け
たことを特徴とする循環式直動コロ軸受。1. A metal bearing part having a V-groove, two end caps inside each of which is attached to both sides of the bearing part and has a swivel part connected to the V-groove at one end. A bearing made of a synthetic resin pipe having a square hole in cross section through which a roller with a retainer can pass is connected to the V groove of the metal bearing portion inside the other end of the turning portion of the two end caps. By mounting on a rail having a V groove that can form a passage of a roller with a cage, and by circulating a plurality of rollers with a cage in the passage and the synthetic resin pipe, the bearing is In the circulating linear motion roller bearing that moves on the rail, a plurality of lubricating oil escape grooves are provided on the four sides of the square hole in the cross section of the synthetic resin pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6047392U JPH0610622U (en) | 1992-07-14 | 1992-07-14 | Return path for circulating linear motion roller bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6047392U JPH0610622U (en) | 1992-07-14 | 1992-07-14 | Return path for circulating linear motion roller bearings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0610622U true JPH0610622U (en) | 1994-02-10 |
Family
ID=13143283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6047392U Pending JPH0610622U (en) | 1992-07-14 | 1992-07-14 | Return path for circulating linear motion roller bearings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0610622U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001082469A (en) * | 1999-09-10 | 2001-03-27 | Nippon Thompson Co Ltd | Linear motion rolling guide unit |
| WO2014119266A1 (en) * | 2013-01-31 | 2014-08-07 | Thk株式会社 | Motion guide device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02292515A (en) * | 1989-05-01 | 1990-12-04 | Nippon Seiko Kk | Linear guide device using both ball and roller |
| JPH04194413A (en) * | 1990-11-27 | 1992-07-14 | Nippon Thompson Co Ltd | Four-streak row endless direct drive guide unit |
-
1992
- 1992-07-14 JP JP6047392U patent/JPH0610622U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02292515A (en) * | 1989-05-01 | 1990-12-04 | Nippon Seiko Kk | Linear guide device using both ball and roller |
| JPH04194413A (en) * | 1990-11-27 | 1992-07-14 | Nippon Thompson Co Ltd | Four-streak row endless direct drive guide unit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001082469A (en) * | 1999-09-10 | 2001-03-27 | Nippon Thompson Co Ltd | Linear motion rolling guide unit |
| WO2014119266A1 (en) * | 2013-01-31 | 2014-08-07 | Thk株式会社 | Motion guide device |
| JP2014167348A (en) * | 2013-01-31 | 2014-09-11 | Thk Co Ltd | Motion guide device |
| US9394940B2 (en) | 2013-01-31 | 2016-07-19 | Thk Co., Ltd. | Motion guide device |
| DE112014000629B4 (en) | 2013-01-31 | 2022-08-18 | Thk Co., Ltd. | Motion Guidance Device |
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