JP2004324828A - Snap ring - Google Patents

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Publication number
JP2004324828A
JP2004324828A JP2003123033A JP2003123033A JP2004324828A JP 2004324828 A JP2004324828 A JP 2004324828A JP 2003123033 A JP2003123033 A JP 2003123033A JP 2003123033 A JP2003123033 A JP 2003123033A JP 2004324828 A JP2004324828 A JP 2004324828A
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JP
Japan
Prior art keywords
retaining ring
snap ring
cross
section
thickness
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2003123033A
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Japanese (ja)
Inventor
Michio Osaki
陸夫 大崎
Hisanao Maruyama
久直 丸山
Takashi Kato
隆 加藤
Kenji Morita
賢二 森田
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.)
Press Kogyo Co Ltd
Original Assignee
Press Kogyo 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 Press Kogyo Co Ltd filed Critical Press Kogyo Co Ltd
Priority to JP2003123033A priority Critical patent/JP2004324828A/en
Publication of JP2004324828A publication Critical patent/JP2004324828A/en
Pending legal-status Critical Current

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  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snap ring capable of sufficiently securing strength in the axial direction thereof and capable of obtaining necessary deformation in the radial direction with small force. <P>SOLUTION: These snap rings 11-13 are formed from a steel plate having a cross section, of which thickness is smaller than width thereof. One or both of an inside surface 14 and an outside surface 15 are formed with one or more recessed parts 16 and 17, and the snap ring capable of obtaining necessary deformation in the radial direction with small force, while sufficiently securing axial strength of the snap ring, can be provided. A tool of complicated structure is unnecessary, and burden of a worker and working time can be reduced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、スナップリング即ち止め輪に関するものである。
【0002】
【従来の技術】
前記止め輪は、軸または穴に形成した溝に嵌合して軸、軸受等の軸方向への移動、脱出を防止するリング状のばねの一種であり、その一例として図10のごときものがある。これは穴用の止め輪で、止め輪1は弾性変形量の大きいばね鋼を用い、幅より厚さが小さい断面で、開放部2を設けて形成されており、開放部2を構成する両端部には、専用工具(図示せず)の先端ピン状部を挿入する小穴3が開けられている。
【0003】
上記の如き止め輪1は、例えば図11に示すような軸部材Sと支持部材G間に配設された軸受Bの軸方向位置を保持するために、軸受Bの端面において支持部材Gの内径側に形成した溝mに嵌入するが、このとき、前記工具の先端のピン状部を止め輪1の小穴3に差し込んで前記開放部2を閉じ方向へ変形させ、この状態で止め輪1の開放部2と反対側を前記溝mに嵌め、ここで工具を弛めてやれば、止め輪1は溝m内に取付けられる。
【0004】
ところで、止め輪1を構成する鋼の弾性率は200GPa程度であり、1ミリメートル×1ミリメートルの矩形断面の長さ100ミリメートルの棒を0.5ミリメートル弾性変形させるに必要な荷重は100キログラムと、塑性変形で同じ量を変形させるのに比較して、はるかに大きな力を必要とする。従って、図10の如き形状の従来の止め輪1を半径方向へ弾性変形するにはかなり大きな力を要する。
【0005】
そして通常、止め輪1は大きくなるほど止め輪の厚さが増大し、例えば軸径100ミリメートル用の止め輪では厚さ6ミリメートル、50ミリメートル用の止め輪では厚さ4ミリメートル必要である。また止め輪1が大きくなれば、当然ながら前記のような取付け、取外しに必要な変形量は大きくなり、それだけ取付け、取外しを行う作業者の負担は大きくなる。
【0006】
止め輪において、小さな力で必要変形量を確保しようとしたとき考えられることは、厚さを薄くすることであるが、このようにすると、止め輪の軸方向の強度が不足するおそれがあり、軸または穴に品物を固定するという止め輪の本来の機能を損なう心配がある。
【0007】
【発明が解決しようとする課題】
よって本発明の課題は、止め輪の軸方向の強度を十分確保しつつ、小さな力で半径方向への必要な変形が得られるところの止め輪を提供することにある。
【0008】
【課題を解決するための手段】
上記課題を解決するための本発明止め輪は、幅より厚さが小なる断面をもつ鋼板製の止め輪において、内側面または外側面の一方または両方に、1以上の凹部を形成したことを特徴とするものである。
【0009】
【発明の実施の形態】
本発明の好ましい実施の形態を、図10及び図11と同一の符号は同一のものを現すものとして図1乃至図5により説明すると、本発明止め輪11〜13は、幅より厚さが小なる断面をもつ鋼板製の止め輪において、内側面14または外側面15の一方または両方に、1以上の凹部16、17を形成したものである。
【0010】
図1から図3に示す実施例について更に詳細に説明する。
図1に示す止め輪11は穴用のもので、従来のものと同様、幅より厚さが小なる断面をもつ鋼板製のものであるが、その内側面14の開放部2の対向位置及び水平中心線が通過するに相当する位置において、合計3つの凹部16を形成したものである。
【0011】
図2に示す止め輪12は軸用のもので、これも従来のものと同様、幅より厚さが小なる断面をもつ鋼板製のものであるが、その外側面15の水平中心線及び垂直中心線が通過するに相当する位置において、合計3つの凹部17を形成したものである。
【0012】
図3に示す止め輪13は、単にある部材の抜け止め等に利用できるもので、幅より厚さが小なる断面をもつ鋼板製のものである点は従来のものと同様であるが、その内側面14の開放部2との対向位置及び外側面15の水平中心線が通過するに相当する位置において、合計3つの凹部16、17を形成したものである。
【0013】
上記凹部16、17の個数、幅及び深さは最終的には実験によって決定するが、後述するように、このうち凹部の深さ、言い換えて「残された当該部の高さ」は、止め輪の変形量に大きな影響を及ぼすものである。
【0014】
また、凹部16、17を形成する位置についても、最終的には実験によって決定するが、発明者らのこれまでの研究によって概して次のことが判明している。これを図4、図5について説明すると、図4の軸D用の止め輪21の場合は、水平中心線が通過するに相当する位置から開放部2側だけ変形しやすければ止め輪21の取付け、取外しの作業性が向上するので、図4のように凹部23は、外側面15における水平中心線が通過するに相当する位置から開放部2側に形成するのがよい。
【0015】
図5の穴A用の止め輪22の場合は、全体的に変形させた方が、殊に取外しやすいので、図5のように凹部24は、内側面14における開放部2の対向側及び水平中心線が通過するに相当する位置に形成するのがよい。
【0016】
図1〜図5に示す止め輪11〜13及び21、22を取付け、取外しする場合は、前記同様、専用工具の先端のピン状部を止め輪の小穴3に差し込んで前記開放部2を開き方向または閉じ方向へ変形させるが、本発明の上記止め輪11〜13及び21、22では前記の如く、所定箇所に凹部16、17または23、24が形成されているので、前記止め輪の変形が容易になされ、作業を効率よく容易に進めることができる。
【0017】
ここで、図6〜図9により前記凹部16、17または23、24の効果を説明すると、図6の止め輪25は単純に開放部2の対向面の外側に凹部26を形成したものであるが、X−X断面を、図7に拡大して示す従来形状のもの(凹部なし)と、図8に拡大して示す凹部を形成したものについて、図6のように荷重Pを掛けたときの変形量を比較すると、次のようになる。
即ち、

Figure 2004324828
即ち、同じ荷重ではaに比べbの方が位置X−Xで4倍変形する。
【0018】
同様に断面寸法を種々変化させて比較したのが図9である。これによれば、強度が許されれば凹部の深さを大きくして(X−X断面の高さhを小さくして)変形し易さをかなり大きくできることがわかる。
【0019】
【発明の効果】
本発明止め輪は、幅より厚さが小なる断面をもつ鋼板製の止め輪において、内側面または外側面の一方または両方に、1以上の凹部を形成したことを特徴とするので、止め輪の軸方向の強度を十分確保しつつ、小さな力で半径方向への必要な変形が得られるところの止め輪を提供することができる。
【0020】
従って、前記工具も簡単なもので済むとともに、作業者の負担及び作業時間を減少させることができる効果がある。
【図面の簡単な説明】
【図1】本発明止め輪の一例を示す斜視図
【図2】本発明止め輪の他の一例を示す斜視図
【図3】本発明止め輪の更に他の一例を示す斜視図
【図4】本発明に係る軸用の止め輪における凹部の配置説明図
【図5】本発明に係る穴用の止め輪における凹部の配置説明図
【図6】本発明に係る止め輪の凹部の効果を説明するための止め輪の正面図
【図7】図6のX−X断面が従来の形状、大きさとしたときの拡大断面図
【図8】図6のX−X断面の拡大断面図
【図9】図6のX−X断面の高さを変化させたときの面積比、変形量を示す図
【図10】従来の止め輪を示す斜視図
【図11】止め輪の使用例を示す断面図。
【符号の説明】
1、11、12、13、21、22 止め輪 2 開放部 3 小穴
14 内側面 15 外側面 16、17、23、24 凹部
B 軸受 S 軸部材 支持部材 G m 溝 D 軸 A 穴。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to snap rings.
[0002]
[Prior art]
The retaining ring is a type of a ring-shaped spring that fits into a groove formed in a shaft or a hole to prevent the shaft, bearings, and the like from moving in the axial direction, and to escape, and an example of such a ring is shown in FIG. is there. This is a retaining ring for a hole, and the retaining ring 1 is made of spring steel having a large elastic deformation amount, has a cross section smaller in thickness than the width, and is formed with an opening 2, and both ends constituting the opening 2. The portion is provided with a small hole 3 into which a tip-shaped portion of a dedicated tool (not shown) is inserted.
[0003]
The retaining ring 1 as described above has an inner diameter of the support member G at an end face of the bearing B in order to maintain an axial position of the bearing B disposed between the shaft member S and the support member G as shown in FIG. At this time, the pin-shaped portion at the tip of the tool is inserted into the small hole 3 of the retaining ring 1 to deform the open portion 2 in the closing direction. If the side opposite to the opening 2 is fitted into the groove m and the tool is loosened here, the retaining ring 1 is mounted in the groove m.
[0004]
By the way, the elastic modulus of the steel constituting the retaining ring 1 is about 200 GPa, and the load required for elastically deforming a bar having a rectangular cross section of 1 mm × 1 mm and a length of 100 mm by 0.5 mm is 100 kg, It requires much more force than deforming the same amount by plastic deformation. Therefore, a considerable force is required to elastically deform the conventional retaining ring 1 having the shape shown in FIG. 10 in the radial direction.
[0005]
Usually, the thickness of the retaining ring increases as the retaining ring 1 becomes larger. For example, a retaining ring for a shaft diameter of 100 mm requires a thickness of 6 mm, and a retaining ring for a 50 mm diameter requires a thickness of 4 mm. In addition, if the retaining ring 1 is large, the amount of deformation required for attachment and detachment as described above naturally increases, and the burden on the operator who attaches and detaches it increases accordingly.
[0006]
In the retaining ring, what is considered when trying to secure the required amount of deformation with a small force is to reduce the thickness, but in this case, the axial strength of the retaining ring may be insufficient, There is a concern that the original function of the retaining ring for fixing an article to a shaft or a hole is impaired.
[0007]
[Problems to be solved by the invention]
Therefore, an object of the present invention is to provide a retaining ring in which necessary deformation in the radial direction can be obtained with a small force while sufficiently securing the axial strength of the retaining ring.
[0008]
[Means for Solving the Problems]
The retaining ring of the present invention for solving the above-mentioned problem is characterized in that, in a retaining ring made of a steel plate having a cross section whose thickness is smaller than the width, one or more concave portions are formed on one or both of an inner surface and an outer surface. It is a feature.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
A preferred embodiment of the present invention will be described with reference to FIGS. 1 to 5 assuming that the same reference numerals as those in FIGS. 10 and 11 represent the same components. The retaining rings 11 to 13 of the present invention have a thickness smaller than the width. In a retaining ring made of a steel sheet having a cross-section, one or more concave portions 16 and 17 are formed on one or both of an inner surface 14 and an outer surface 15.
[0010]
The embodiment shown in FIGS. 1 to 3 will be described in more detail.
The retaining ring 11 shown in FIG. 1 is for a hole and is made of a steel plate having a cross section whose thickness is smaller than the width as in the conventional case. A total of three concave portions 16 are formed at positions corresponding to the passage of the horizontal center line.
[0011]
The retaining ring 12 shown in FIG. 2 is for a shaft, and is also made of a steel plate having a cross section smaller in thickness than the width, similarly to the conventional one, but the horizontal center line and vertical At a position corresponding to the passage of the center line, a total of three concave portions 17 are formed.
[0012]
The retaining ring 13 shown in FIG. 3 can be used merely for retaining a certain member, and is similar to the conventional one in that it is made of a steel plate having a cross section whose thickness is smaller than its width. A total of three recesses 16 and 17 are formed at a position where the inner side surface 14 faces the opening 2 and a position where the horizontal center line of the outer side surface 15 passes.
[0013]
The number, width and depth of the recesses 16 and 17 are ultimately determined by experiments, but as will be described later, the depth of the recesses, in other words, the “height of the remaining portions” is determined by stopping. This has a large effect on the amount of deformation of the ring.
[0014]
Further, the positions at which the concave portions 16 and 17 are formed are ultimately determined by experiments, but the following has generally been found by the inventors' studies so far. This will be described with reference to FIGS. 4 and 5. In the case of the retaining ring 21 for the axis D in FIG. 4, if it is easy to deform only the opening 2 side from a position corresponding to the passage of the horizontal center line, the retaining ring 21 is attached. Since the removal workability is improved, it is preferable that the concave portion 23 is formed on the open portion 2 side from a position corresponding to the horizontal center line on the outer surface 15 as shown in FIG.
[0015]
In the case of the retaining ring 22 for the hole A in FIG. 5, it is particularly easy to remove the retaining ring 22 when it is entirely deformed. Therefore, as shown in FIG. It is good to form in the position corresponding to the center line passing.
[0016]
When attaching and removing the retaining rings 11 to 13 and 21 and 22 shown in FIGS. 1 to 5, similarly to the above, insert the pin-shaped portion at the tip of the special tool into the small hole 3 of the retaining ring to open the opening 2. As described above, the retaining rings 11 to 13 and 21 and 22 of the present invention are formed with the concave portions 16, 17 or 23 and 24 at predetermined positions, so that the retaining rings are deformed. And the work can be efficiently and easily performed.
[0017]
Here, the effect of the recesses 16, 17 or 23, 24 will be described with reference to FIGS. 6 to 9. The retaining ring 25 in FIG. 6 simply has a recess 26 formed outside the facing surface of the opening 2. However, when a load P is applied as shown in FIG. 6 between the conventional shape (without the concave portion) shown in FIG. 7 and the concave portion shown in FIG. Comparing the amount of deformation of
That is,
Figure 2004324828
That is, under the same load, b is deformed four times at position XX compared to a.
[0018]
Similarly, FIG. 9 shows a comparison in which the cross-sectional dimensions are variously changed. According to this, if the strength is permitted, it is understood that the depth of the concave portion can be increased (the height h of the XX cross section is reduced) and the ease of deformation can be considerably increased.
[0019]
【The invention's effect】
The retaining ring of the present invention is a retaining ring made of a steel plate having a cross section whose thickness is smaller than the width, wherein one or more concave portions are formed on one or both of the inner surface and the outer surface. Can be provided in which the required deformation in the radial direction can be obtained with a small force while sufficiently securing the axial strength of the retaining ring.
[0020]
Therefore, there is an effect that the tool can be simple and the burden on the worker and the working time can be reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of the retaining ring of the present invention. FIG. 2 is a perspective view showing another example of the retaining ring of the present invention. FIG. 3 is a perspective view showing still another example of the retaining ring of the present invention. FIG. 5 is an explanatory view of an arrangement of a concave portion in a retaining ring for a shaft according to the present invention. FIG. 5 is an explanatory view of an arrangement of a concave portion in a retaining ring for a hole according to the present invention. FIG. 7 is an enlarged cross-sectional view when the XX cross section of FIG. 6 is a conventional shape and size. FIG. 8 is an enlarged cross-sectional view of the XX cross section of FIG. 9 is a diagram showing the area ratio and the amount of deformation when the height of the XX section in FIG. 6 is changed. FIG. 10 is a perspective view showing a conventional retaining ring. FIG. 11 is a section showing an example of use of the retaining ring. FIG.
[Explanation of symbols]
1, 11, 12, 13, 21, 22 Retaining ring 2 Opening part 3 Small hole 14 Inner surface 15 Outer surface 16, 17, 23, 24 Concave part B Bearing S Shaft member Support member Gm Groove D Shaft A hole.

Claims (4)

幅より厚さが小なる断面をもつ鋼板製の止め輪において、内側面または外側面の一方または両方に、1以上の凹部を形成したことを特徴とする止め輪。A retaining ring made of a steel plate having a cross section smaller in thickness than width, wherein one or more concave portions are formed in one or both of an inner surface and an outer surface. 前記凹部が内側面に形成されたことを特徴とする請求項1記載の止め輪。The retaining ring according to claim 1, wherein the recess is formed on an inner surface. 前記凹部が外側面に形成されたことを特徴とする請求項1記載の止め輪。The retaining ring according to claim 1, wherein the concave portion is formed on an outer surface. 前記凹部が内側面および外側面に形成されたことを特徴とする請求項1記載の止め輪。The retaining ring according to claim 1, wherein the concave portion is formed on an inner surface and an outer surface.
JP2003123033A 2003-04-28 2003-04-28 Snap ring Pending JP2004324828A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008298199A (en) * 2007-05-31 2008-12-11 Kawamoto Pump Mfg Co Ltd Snap ring and ball valve device with built-in strainer using snap ring
CN102014687B (en) * 2008-02-26 2012-08-08 斯莫利铁环公司 Hoop retaining ring
WO2015005090A1 (en) * 2013-07-08 2015-01-15 カルソニックカンセイ株式会社 Gas-tight terminal fixing structure for gas compressor
CN106460907A (en) * 2014-06-25 2017-02-22 Gkn 动力传动系统北美有限公司 Retainer for inner and outer shafts
US10378588B2 (en) 2017-01-19 2019-08-13 Gkn Automotive Limited Retainer for rotating members
JP2020511620A (en) * 2017-03-20 2020-04-16 ボーグワーナー インコーポレーテッド Discharge prevention device for hydraulic tensioner

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008298199A (en) * 2007-05-31 2008-12-11 Kawamoto Pump Mfg Co Ltd Snap ring and ball valve device with built-in strainer using snap ring
CN102014687B (en) * 2008-02-26 2012-08-08 斯莫利铁环公司 Hoop retaining ring
WO2015005090A1 (en) * 2013-07-08 2015-01-15 カルソニックカンセイ株式会社 Gas-tight terminal fixing structure for gas compressor
JP2015015215A (en) * 2013-07-08 2015-01-22 カルソニックカンセイ株式会社 Airtight terminal fixing structure of gas compressor
CN106460907A (en) * 2014-06-25 2017-02-22 Gkn 动力传动系统北美有限公司 Retainer for inner and outer shafts
JP2017525897A (en) * 2014-06-25 2017-09-07 ジーケーエヌ・ドライブライン・ノースアメリカ・インコーポレーテッド Retainer for inner and outer shafts
US10634194B2 (en) 2014-06-25 2020-04-28 Gkn Driveline North America, Inc. Retainer for inner and outer shafts
US10378588B2 (en) 2017-01-19 2019-08-13 Gkn Automotive Limited Retainer for rotating members
JP2020511620A (en) * 2017-03-20 2020-04-16 ボーグワーナー インコーポレーテッド Discharge prevention device for hydraulic tensioner

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