JP2021109287A - C-type retaining ring mounting jig and mounting method of c-type retaining ring using the same - Google Patents

C-type retaining ring mounting jig and mounting method of c-type retaining ring using the same Download PDF

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JP2021109287A
JP2021109287A JP2020003523A JP2020003523A JP2021109287A JP 2021109287 A JP2021109287 A JP 2021109287A JP 2020003523 A JP2020003523 A JP 2020003523A JP 2020003523 A JP2020003523 A JP 2020003523A JP 2021109287 A JP2021109287 A JP 2021109287A
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retaining ring
shaped retaining
peripheral surface
shaft
outer peripheral
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JP7173998B2 (en
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博康 田中
Hiroyasu Tanaka
博康 田中
史旭 中渡瀬
Fumiaki Nakawatase
史旭 中渡瀬
正人 小山田
Masato Oyamada
正人 小山田
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Mitsubishi Electric Building Solutions Corp
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Mitsubishi Electric Building Techno Service Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/08—Machines for placing washers, circlips, or the like on bolts or other members

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Abstract

To provide a C-type retaining ring mounting jig which facilitates mounting of a C-type retaining ring in a short time and also can approximately prevent the C-type retaining ring from elastically deforming during the mounting of the C-type retaining ring, and a mounting method of a C-type retaining ring.SOLUTION: A C-type retaining ring mounting jig 15 is used in mounting a C-type retaining ring 1 on a shaft groove 8 of a shaft 7. The C-type retaining ring mounting jig 15 comprises an insertion guide part 16 having a guide part inclined surface 17 whose diameters enlarge as going to one side in a shaft direction and a pushing-in part 21 having a recessed portion 47 that can store the whole of the insertion guide part 16. An end face of the C-type retaining ring 1 arranged to surround the guide part inclined surface 17 is pressed by an end face 21a at an opening side of the pushing-in part 21, so as to move the C-type retaining ring 1 toward an enlarged diameter side of the guide part inclined surface 17 so that an inner diameter of the C-type retaining ring 1 is enlarged.SELECTED DRAWING: Figure 4

Description

本開示は、Ｃ型止め輪取付治具、及びそれを用いたＣ型止め輪の取付方法に関する。 The present disclosure relates to a C-type retaining ring mounting jig and a method for mounting a C-shaped retaining ring using the jig.

エスカレーターは、通常、駆動ユニットで駆動側スプロケットを回転させ、ステップが連結されたステップチェーンを駆動側スプロケットと従動側スプロケットの間を循環移動させることによって、ステップを循環移動させる。また、駆動側スプロケットからの動力を手すり駆動装置へ伝達し、移動手すりをステップと同一方向に同一速度で移動させる。また、ステップが循環移動する際、ステップの踏板の両側に設けられた駆動ローラに駆動レール上を走行させ、踏板の両側に設けられた従動ローラに従動レール上を走行させることによって、ステップの所望の姿勢を実現している。エスカレーターでは、特許文献１に記載されているように、ローラを装着する軸における駆動ローラや従動ローラの外側にＣ型止め輪を配置することによって、当該軸から駆動ローラや従動ローラが脱落することを防止している。 The escalator usually circulates the steps by rotating the drive-side sprocket with the drive unit and circulating the step chain to which the steps are connected between the drive-side sprocket and the driven sprocket. Further, the power from the drive side sprocket is transmitted to the handrail drive device, and the moving handrail is moved in the same direction as the step and at the same speed. Further, when the step circulates, the drive rollers provided on both sides of the tread plate of the step are made to travel on the drive rail, and the driven rollers provided on both sides of the tread plate are made to travel on the driven rails, whereby the desired step is desired. The attitude of is realized. In an escalator, as described in Patent Document 1, by arranging a C-shaped retaining ring outside the drive roller and the driven roller on the shaft on which the roller is mounted, the drive roller and the driven roller fall off from the shaft. Is being prevented.

特開２００９−２２１０１３号公報Japanese Unexamined Patent Publication No. 2009-220113

駆動ローラや従動ローラが摩耗等で劣化して取替えが必要になった場合には、例えば次の手法でＣ型止め輪を脱着させる。先ず、ステップの側方に設けられるスカートガードを外したり、図１０に示すように、エスカレーター下方側にある乗場の底板を外すことによって、ローラ１１を視認可能な状態にする。その後、図１０に示すように、ローラ１１の外側に鏡１４を配置して、鏡１４を介して図１１に示すローラ１１の外側面を視認できる状態にする。 When the drive roller or driven roller deteriorates due to wear or the like and needs to be replaced, for example, the C-shaped retaining ring is attached / detached by the following method. First, the roller 11 is made visible by removing the skirt guard provided on the side of the step or removing the bottom plate of the landing on the lower side of the escalator as shown in FIG. After that, as shown in FIG. 10, a mirror 14 is arranged outside the roller 11 so that the outer surface of the roller 11 shown in FIG. 11 can be visually recognized through the mirror 14.

その後、鏡１４によって軸７に配置されたＣ型止め輪１の一対の止め輪孔２,２の位置を確認した後、その止め輪孔２,２にスナップリングプライヤ３（図１３参照）の孔差込部６（図１３参照）を差し込む。 Then, after confirming the positions of the pair of retaining ring holes 2 and 2 of the C-shaped retaining ring 1 arranged on the shaft 7 by the mirror 14, the snap ring pliers 3 (see FIG. 13) are placed in the retaining ring holes 2 and 2. Insert the hole insertion portion 6 (see FIG. 13).

続いて、スナップリングプライヤ３からの力で一対の止め輪孔２,２間を押し拡げてＣ型止め輪１を拡径させる。そして、拡径しているＣ型止め輪１を軸７に設けられた止め輪溝から離脱させ、その後、Ｃ型止め輪１を軸７から外側に引き抜く。このようにして、Ｃ型止め輪１が軸７から外される。 Subsequently, the force from the snap ring pliers 3 pushes and expands between the pair of retaining ring holes 2 and 2, and the diameter of the C-shaped retaining ring 1 is expanded. Then, the C-shaped retaining ring 1 having an enlarged diameter is separated from the retaining ring groove provided on the shaft 7, and then the C-shaped retaining ring 1 is pulled out from the shaft 7. In this way, the C-shaped retaining ring 1 is removed from the shaft 7.

Ｃ型止め輪１が取り外される際、Ｃ型止め輪１は、拡径された不安定な状態（元の径に戻ろうとする力が掛かった状態）で軸７から外側に引き抜かれる。よって、Ｃ型止め輪１が引き抜かれる際、Ｃ型止め輪１がスナップリングプライヤから飛び出し易く、飛んでいってしまったＣ型止め輪１の捜索に時間及び労力を要することがある。 When the C-shaped retaining ring 1 is removed, the C-shaped retaining ring 1 is pulled out from the shaft 7 in an unstable state in which the diameter is expanded (a state in which a force for returning to the original diameter is applied). Therefore, when the C-type retaining ring 1 is pulled out, the C-type retaining ring 1 easily pops out from the snap ring pliers, and it may take time and labor to search for the C-shaped retaining ring 1 that has flown away.

更には、この方法では、Ｃ型止め輪１の拡径の度合いが保守作業員の感性に委ねられる。その結果、Ｃ型止め輪１が広げられすぎて塑性変形すると、Ｃ型止め輪１の内径が大きくなってしまい、再度装着した際に軸７との間に遊びが生じたりして、Ｃ型止め輪１の十分なローラ脱落防止機能が失われる可能性がある。 Further, in this method, the degree of diameter expansion of the C-shaped retaining ring 1 is left to the sensitivity of the maintenance worker. As a result, if the C-type retaining ring 1 is expanded too much and plastically deformed, the inner diameter of the C-type retaining ring 1 becomes large, and when it is reattached, play occurs between it and the shaft 7, resulting in a C-type retaining ring. The sufficient roller dropout prevention function of the retaining ring 1 may be lost.

この問題は、軸７からＣ型止め輪１を外す際のみならず、駆動ローラや従動ローラを取り換えた後に、Ｃ型止め輪１を軸７の止め輪溝に嵌め込む際にも生じる。そのような背景において、軸７の止め輪溝に対するＣ型止め輪１の嵌め込みを、確実、安全かつ迅速に実行できれば、Ｃ型止め輪１の脱着に関し、Ｃ型止め輪１の飛び出しのリスクやＣ型止め輪１の塑性変形のリスクを半分にできるだけでなく、ローラ１１の取替作業も短縮でき、大きな意義がある。 This problem occurs not only when the C-shaped retaining ring 1 is removed from the shaft 7, but also when the C-shaped retaining ring 1 is fitted into the retaining ring groove of the shaft 7 after replacing the drive roller and the driven roller. Against such a background, if the C-type retaining ring 1 can be fitted into the retaining ring groove of the shaft 7 reliably, safely and quickly, there is a risk that the C-type retaining ring 1 will pop out with respect to the attachment / detachment of the C-type retaining ring 1. Not only can the risk of plastic deformation of the C-shaped retaining ring 1 be halved, but also the replacement work of the roller 11 can be shortened, which is of great significance.

次に、更により端的かつ分かり易く従来の問題について説明する。図１２は、Ｃ型止め輪１の構造を説明する図であり、図１３は、スナップリングプライヤ３を表す図である。また、図１４は、Ｃ型止め輪１の使用対象の部材を説明する模式図であり、図１５は、従来のＣ型止め輪１の取り付け方法を説明する模式図であり、図１６は、従来のＣ型止め輪１の取り付け方法についての問題的を説明する模式図である。 Next, the conventional problems will be described in a more straightforward and easy-to-understand manner. FIG. 12 is a diagram for explaining the structure of the C-shaped retaining ring 1, and FIG. 13 is a diagram showing the snap ring pliers 3. Further, FIG. 14 is a schematic view for explaining a member to be used of the C-type retaining ring 1, FIG. 15 is a schematic view for explaining a conventional method of attaching the C-type retaining ring 1, and FIG. 16 is a schematic view. It is a schematic diagram explaining the problem with the attachment method of the conventional C type retaining ring 1.

図１４を参照して、軸７にローラ１１を軸段差部１０まで圧入する。その後、図１５に示すように、ローラ１１の軸受１２が軸７から外れないように軸７の軸溝８にＣ型止め輪１を保持する。この時、Ｃ型止め輪１を取り付けるのに使用するのが図１３に示すスナップリングプライヤ３（図１５も参照）である。 With reference to FIG. 14, the roller 11 is press-fitted into the shaft 7 to the shaft step portion 10. After that, as shown in FIG. 15, the C-shaped retaining ring 1 is held in the shaft groove 8 of the shaft 7 so that the bearing 12 of the roller 11 does not come off from the shaft 7. At this time, the snap ring pliers 3 shown in FIG. 13 (see also FIG. 15) are used to attach the C-shaped retaining ring 1.

詳しくは、図１２に示すＣ型止め輪１の一対の止め輪孔２に図１３に示すスナップリングプライヤ３の一対の孔差込部６（図１５参照）を挿入し、一対のグリップ４（図１３参照）に力を加える。すると、支点５（図１３参照）を中心として孔差込部６が広がり、それに伴いＣ型止め輪１の止め輪孔２が矢印Ａ方向（図１２参照）に広がり、Ｃ型止め輪１の内径が広くなる。その後、図１５を参照して、スナップリングプライヤ３によりＣ型止め輪１の内径を軸７の軸径より広げて軸７に挿入し、Ｃ型止め輪１が軸溝８の部分まで来たらグリップ４に加えていた力を緩める。これにより、Ｃ型止め輪１の弾性力によりＣ型止め輪１の内径が軸溝８の外径まで小さくなり、Ｃ型止め輪１が軸溝８内に保持される。 Specifically, the pair of hole insertion portions 6 (see FIG. 15) of the snap ring pliers 3 shown in FIG. 13 are inserted into the pair of retaining ring holes 2 of the C-shaped retaining ring 1 shown in FIG. 12, and the pair of grips 4 (see FIG. 15). Apply force to (see FIG. 13). Then, the hole insertion portion 6 expands around the fulcrum 5 (see FIG. 13), and the retaining ring hole 2 of the C-type retaining ring 1 expands in the direction of arrow A (see FIG. 12) accordingly, and the C-type retaining ring 1 becomes wide. The inner diameter becomes wider. After that, referring to FIG. 15, the inner diameter of the C-shaped retaining ring 1 is widened by the snap ring pliers 3 from the shaft diameter of the shaft 7 and inserted into the shaft 7, and when the C-shaped retaining ring 1 reaches the portion of the shaft groove 8. Loosen the force applied to the grip 4. As a result, the elastic force of the C-shaped retaining ring 1 reduces the inner diameter of the C-shaped retaining ring 1 to the outer diameter of the shaft groove 8, and the C-shaped retaining ring 1 is held in the shaft groove 8.

係る背景において、図１６に示すように、エスカレーターの内部で作業する場合は、すぐ近くに壁などがあり作業空間が狭く、作業者はＣ型止め輪１を取り付ける時にその取り付け部が直視できないことが多い。このような作業環境の場合は鏡１４を使い、鏡１４に映る状況を見ながら作業者はスナップリングプライヤ３を使用してＣ型止め輪１を取り付ける。また、カメラで状況を映しその映像を見ながらＣ型止め輪１の取り付け作業することもある。 In this background, as shown in FIG. 16, when working inside the escalator, the work space is narrow due to a wall or the like in the immediate vicinity, and the operator cannot directly see the mounting portion when mounting the C-shaped retaining ring 1. There are many. In such a working environment, the mirror 14 is used, and the operator attaches the C-shaped retaining ring 1 using the snap ring pliers 3 while observing the situation reflected in the mirror 14. In addition, the C-shaped retaining ring 1 may be attached while the situation is projected by a camera and the image is viewed.

このような作業環境の場合、作業者は鏡１４を見たりカメラ映像を見て作業するためスナップリングプライヤ３の操作方向が逆になったり見えにくかったりしてＣ型止め輪１の取り付けに時間がかかる。また、軸溝８にＣ型止め輪１が確実に保持できたか直視できないため、Ｃ型止め輪１を手で押して軸溝８に確実に保持できたか確認する必要があり手間がかかる。更に、Ｃ型止め輪１を軸７に確実に取り付けようとしてＣ型止め輪１の止め輪孔２を軸７の軸径より大きく広げすぎて、Ｃ型止め輪１の弾性限界を超えて塑性変形させ、Ｃ型止め輪１の内径が軸溝８の溝径より大きくなりＣ型止め輪１の保持力が低下する場合もある。すなわち、軸７にＣ型止め輪１を取り付ける際に、作業者の技量差により、作業時間が変動したり、Ｃ型止め輪１の塑性変形し易さが変動する等、作業効率や取付性能にバラツキが生じるという問題がある。 In such a work environment, since the operator works by looking at the mirror 14 or the camera image, the operation direction of the snap ring pliers 3 is reversed or difficult to see, and it takes time to attach the C-shaped retaining ring 1. It takes. Further, since it is not possible to directly see whether the C-shaped retaining ring 1 can be securely held in the shaft groove 8, it is necessary to push the C-shaped retaining ring 1 by hand to check whether the C-shaped retaining ring 1 can be securely held in the shaft groove 8, which is troublesome. Further, in order to securely attach the C-shaped retaining ring 1 to the shaft 7, the retaining ring hole 2 of the C-shaped retaining ring 1 is widened too much larger than the shaft diameter of the shaft 7, and the elastic limit of the C-shaped retaining ring 1 is exceeded. By deforming, the inner diameter of the C-shaped retaining ring 1 may become larger than the groove diameter of the shaft groove 8, and the holding force of the C-shaped retaining ring 1 may decrease. That is, when mounting the C-shaped retaining ring 1 on the shaft 7, the working time and the easiness of plastic deformation of the C-shaped retaining ring 1 fluctuate due to the difference in skill of the operator, and the work efficiency and mounting performance There is a problem that the variation occurs.

そこで、本開示の目的は、Ｃ型止め輪を短時間で取り付け易く、Ｃ型止め輪の取付時にＣ型止め輪が塑性変形することも略防止できるＣ型止め輪取付治具及び方法を提供することにある。 Therefore, an object of the present disclosure is to provide a C-type retaining ring mounting jig and method that makes it easy to mount the C-shaped retaining ring in a short time and can substantially prevent the C-shaped retaining ring from being plastically deformed when the C-shaped retaining ring is mounted. To do.

上記課題を解決するため、本開示に係るＣ型止め輪取付治具は、Ｃ型止め輪を軸の軸溝に取り付けるのに用いるＣ型止め輪取付治具であって、軸方向の一方側に行くにしたがって拡径するテーパ外周面を有する挿入ガイド部と、前記挿入ガイド部の全てを収容可能な凹部を有する押込部と、を備え、前記押込部の開口側の端面で、前記テーパ外周面を囲むように配置したＣ型止め輪の端面を押圧することで、前記Ｃ型止め輪を前記テーパ外周面の拡径側に前記Ｃ型止め輪の内径を広げるように移動させる。 In order to solve the above problems, the C-type retaining ring mounting jig according to the present disclosure is a C-shaped retaining ring mounting jig used for mounting the C-shaped retaining ring in the shaft groove of the shaft, and is one side in the axial direction. An insertion guide portion having a tapered outer peripheral surface that expands in diameter toward By pressing the end surface of the C-shaped retaining ring arranged so as to surround the surface, the C-shaped retaining ring is moved to the enlarged diameter side of the tapered outer peripheral surface so as to widen the inner diameter of the C-shaped retaining ring.

本開示によれば、Ｃ型止め輪の取付時にＣ型止め輪が作業スペースまで飛び出すことを略防止できるので、Ｃ型止め輪の捜索に時間を要することがない。更には、作業者の技量に関係なく挿入ガイド部とＣ型止め輪と押込部を組み合わせて保持した状態で挿入ガイド部を軸の軸端に押し当て、その状態で押込部を押すだけで短時間でＣ型止め輪を軸溝に挿入できる。また、Ｃ型止め輪を作業者が広げることがないため、Ｃ型止め輪の塑性変形による保持力低下も防止できる。更には、挿入ガイド部を軸端に当てて押込部を押すという単純な作業のため作業ミスも発生しない。したがって、作業者の技量に無関係に、Ｃ型止め輪を短時間で取り付け易く、Ｃ型止め輪の取付時にＣ型止め輪が塑性変形することも略防止できる。 According to the present disclosure, it is possible to substantially prevent the C-type retaining ring from jumping out to the work space when the C-type retaining ring is attached, so that it does not take time to search for the C-type retaining ring. Furthermore, regardless of the skill of the operator, the insertion guide part is pressed against the shaft end of the shaft while holding the insertion guide part, the C-shaped retaining ring, and the push-in part in combination, and the push-in part is pushed in that state for a short time. The C-shaped retaining ring can be inserted into the shaft groove in time. Further, since the operator does not spread the C-shaped retaining ring, it is possible to prevent a decrease in holding force due to plastic deformation of the C-shaped retaining ring. Further, since the insertion guide portion is applied to the shaft end and the push-in portion is pushed, no work error occurs. Therefore, regardless of the skill of the operator, the C-shaped retaining ring can be easily attached in a short time, and the C-shaped retaining ring can be substantially prevented from being plastically deformed when the C-shaped retaining ring is attached.

また、前記挿入ガイド部が前記軸方向のテーパ外周面の大径側にテーパ内周面を有してもよく、前記テーパ内周面の内径が、前記軸方向の大径側に行くにしたがって大きくなっていてもよい。 Further, the insertion guide portion may have a tapered inner peripheral surface on the large diameter side of the tapered outer peripheral surface in the axial direction, and as the inner diameter of the tapered inner peripheral surface increases toward the large diameter side in the axial direction. It may be larger.

本構成によれば、挿入ガイド部のテーパ内周面を軸の軸端に押し当てることができる。したがって、軸に対する挿入ガイド部の静止摩擦力を大きくでき、Ｃ型止め輪の取付作業中に挿入ガイド部を軸に対して安定に静止させることができる。 According to this configuration, the tapered inner peripheral surface of the insertion guide portion can be pressed against the shaft end of the shaft. Therefore, the static frictional force of the insertion guide portion with respect to the shaft can be increased, and the insertion guide portion can be stably stopped with respect to the shaft during the mounting work of the C-shaped retaining ring.

また、前記凹部の底部には、前記軸方向に延在する貫通孔が設けられてもよく、使用状態で、前記挿入ガイド部に固定又は係止される基準部、及び前記基準部に繋がって前記貫通孔に収容される収容部を有する連結部を備えてもよく、前記使用状態において、前記押込部を前記収容部でガイドしながら前記連結部において前記貫通孔から突出する突出部の長さが長くなるように前記連結部に対して前記軸方向の一方側に移動させてもよい。 Further, the bottom of the recess may be provided with a through hole extending in the axial direction, and is connected to the reference portion fixed or locked to the insertion guide portion and the reference portion in the used state. A connecting portion having an accommodating portion accommodated in the through hole may be provided, and in the used state, the length of the protruding portion protruding from the through hole in the connecting portion while guiding the pushing portion by the accommodating portion. May be moved to one side in the axial direction with respect to the connecting portion so that

本構成によれば、押込部を連結部でガイドできるので押込部の姿勢を安定させ易い。したがって、押込部で、Ｃ型止め輪を円滑に押圧できて、Ｃ型止め輪に効率的に力を付与することができる。 According to this configuration, the push-in portion can be guided by the connecting portion, so that the posture of the push-in portion can be easily stabilized. Therefore, the C-shaped retaining ring can be smoothly pressed by the pushing portion, and the force can be efficiently applied to the C-shaped retaining ring.

また、前記連結部が、前記軸方向に延在する棒部材でもよく、前記棒部材の一方側の端部が、前記挿入ガイド部の前記軸方向の端面における径方向の中央部に固定されていてもよい。 Further, the connecting portion may be a rod member extending in the axial direction, and one end portion of the rod member is fixed to the radial center portion of the axial end surface of the insertion guide portion. You may.

本構成によれば、Ｃ型止め輪取付治具を片手で操作し易くなる。更には、棒部材が、軸方向に直線状に延在するので、棒部材にガイドされる押込部も軸方向にまっすぐ押すことができるようになり、その結果、Ｃ型止め輪をまっすぐ押すことが出来るようになる。よって、Ｃ型止め輪を円滑に移動させることができ、作業時間を、短縮することができる。 According to this configuration, the C-shaped retaining ring mounting jig can be easily operated with one hand. Furthermore, since the rod member extends linearly in the axial direction, the pushing portion guided by the rod member can also be pushed straight in the axial direction, and as a result, the C-shaped retaining ring is pushed straight. Will be able to do. Therefore, the C-shaped retaining ring can be moved smoothly, and the working time can be shortened.

また、前記凹部が円筒内周面を含んでもよく、前記円筒内周面の内径がａであって、テーパ外周面の最大外径がｂであるとき、ａ＞ｂが成立してもよい。 Further, the recess may include the inner peripheral surface of the cylinder, and when the inner diameter of the inner peripheral surface of the cylinder is a and the maximum outer diameter of the outer peripheral surface of the taper is b, a> b may be established.

本構成によれば、Ｃ型止め輪を押込部で挿入ガイド部を超えて軸溝まで押圧することができる。 According to this configuration, the C-shaped retaining ring can be pressed by the pushing portion beyond the insertion guide portion to the shaft groove.

また、前記押込部が弾性材料で構成され、前記テーパ外周面の最大外径がｂであって、前記テーパ外周面の最小外径がｅであり、前記押込部に外力が付与されていない状態での前記凹部の内径がｋであるとき、ｂ＞ｋ＞ｅが成立し、前記押込部において前記凹部を画定している環状部に、周方向に間隔をおいて位置する複数のスリットが設けられ、前記各スリットは、前記環状部の径方向の両側と前記軸方向の一方側に開口してもよい。 Further, the pushing portion is made of an elastic material, the maximum outer diameter of the tapered outer peripheral surface is b, the minimum outer diameter of the tapered outer peripheral surface is e, and no external force is applied to the pushing portion. When the inner diameter of the recess is k, b> k> e is established, and a plurality of slits located at intervals in the circumferential direction are provided in the annular portion defining the recess in the pushing portion. The slits may be opened on both sides of the annular portion in the radial direction and on one side in the axial direction.

本構成によれば、テーパ外周面に沿って押込部の開口部を広げることができ、Ｃ型止め輪の取付の際にＣ型止め輪の内周側を押すことができる。したがって、Ｃ型止め輪の内周側部分の軸方向の変形を抑制できて、Ｃ型止め輪を円滑かつ効率的に移動させることができ、Ｃ型止め輪の作業効率を高くできる。 According to this configuration, the opening of the pushing portion can be widened along the outer peripheral surface of the taper, and the inner peripheral side of the C-shaped retaining ring can be pushed when the C-shaped retaining ring is attached. Therefore, the deformation of the inner peripheral side portion of the C-shaped retaining ring in the axial direction can be suppressed, the C-shaped retaining ring can be moved smoothly and efficiently, and the working efficiency of the C-shaped retaining ring can be increased.

また、本開示に係るＣ型止め輪の取付方法は、本開示のＣ型止め輪取付治具を用いて軸の軸溝にＣ型止め輪を取り付けるＣ型止め輪の取付方法であって、前記Ｃ型止め輪取付治具の前記押込部の開口側の端面で、前記テーパ外周面を囲むように配置した前記Ｃ型止め輪の端面を押圧することで、前記Ｃ型止め輪を前記テーパ外周面の拡径側に前記Ｃ型止め輪の内径を広げるように移動させた後、更に、前記押込部の前記端面で、前記Ｃ型止め輪の端面を押圧することで、前記Ｃ型止め輪を前記テーパ外周面から前記テーパ外周面に連なるように位置させた前記軸の外周面上に移動させ、更に、前記押込部の前記端面で、前記Ｃ型止め輪の端面を押圧することで、前記Ｃ型止め輪をその外周面上を前記軸の前記軸溝まで移動させる。 Further, the method of attaching the C-type retaining ring according to the present disclosure is a method of attaching the C-type retaining ring to attach the C-type retaining ring to the shaft groove of the shaft by using the C-type retaining ring attachment jig of the present disclosure. By pressing the end face of the C-shaped retaining ring arranged so as to surround the tapered outer peripheral surface with the end face of the C-shaped retaining ring mounting jig on the opening side of the pushing portion, the C-shaped retaining ring is tapered. The C-shaped retaining ring is moved to the enlarged diameter side of the outer peripheral surface so as to widen the inner diameter of the C-shaped retaining ring, and then the end surface of the C-shaped retaining ring is pressed by the end face of the pushing portion to further press the C-shaped retaining ring. By moving the ring from the tapered outer peripheral surface onto the outer peripheral surface of the shaft positioned so as to be continuous with the tapered outer peripheral surface, and further pressing the end surface of the C-shaped retaining ring with the end surface of the pushing portion. , The C-shaped retaining ring is moved on the outer peripheral surface of the C-shaped retaining ring to the shaft groove of the shaft.

本開示によれば、Ｃ型止め輪の取付時にＣ型止め輪が作業スペースまで飛び出すことを略防止できるので、Ｃ型止め輪の捜索に時間を要することがない。更には、作業者の技量に関係なく挿入ガイド部とＣ型止め輪と押込部を組み合わせて保持した状態で挿入ガイド部を軸の軸端に押し当て、その状態で押込部を押すだけで短時間でＣ型止め輪を軸溝に挿入できる。また、Ｃ型止め輪を作業者が広げることがないため、Ｃ型止め輪の塑性変形による保持力低下も防止できる。更には、挿入ガイド部を軸端に当てて押込部を押すという単純な作業のため作業ミスも発生しない。したがって、作業者の技量に無関係に、Ｃ型止め輪を短時間で取り付け易く、Ｃ型止め輪の取付時にＣ型止め輪が塑性変形することも略防止できる。 According to the present disclosure, it is possible to substantially prevent the C-type retaining ring from jumping out to the work space when the C-type retaining ring is attached, so that it does not take time to search for the C-type retaining ring. Furthermore, regardless of the skill of the operator, the insertion guide part is pressed against the shaft end of the shaft while holding the insertion guide part, the C-shaped retaining ring, and the push-in part in combination, and the push-in part is pushed in that state for a short time. The C-shaped retaining ring can be inserted into the shaft groove in time. Further, since the operator does not spread the C-shaped retaining ring, it is possible to prevent a decrease in holding force due to plastic deformation of the C-shaped retaining ring. Further, since the insertion guide portion is applied to the shaft end and the push-in portion is pushed, no work error occurs. Therefore, regardless of the skill of the operator, the C-shaped retaining ring can be easily attached in a short time, and the C-shaped retaining ring can be substantially prevented from being plastically deformed when the C-shaped retaining ring is attached.

また、前記挿入ガイド部の中心軸が前記軸の中心軸と略同一直線上に位置している状態で前記軸に対して前記挿入ガイド部が相対移動不可になるまで前記挿入ガイド部を前記軸に押圧することで、前記軸を前記テーパ外周面に連なるように位置させるようにし、前記軸が前記テーパ外周面に連なっている状態での、前記挿入ガイド部の大径側の端と前記軸溝との軸方向の距離がｆであり、前記挿入ガイド部の前記軸方向の寸法がｇであり、前記押込部の前記凹部の前記軸方向の深さがｈであるとき、ｆ＋ｇ≦ｈが成立してもよい。 Further, in a state where the central axis of the insertion guide portion is located on substantially the same straight line as the central axis of the shaft, the insertion guide portion is moved to the shaft until the insertion guide portion cannot move relative to the shaft. By pressing against, the shaft is positioned so as to be connected to the tapered outer peripheral surface, and the large-diameter end of the insertion guide portion and the shaft in a state where the shaft is connected to the tapered outer peripheral surface. When the axial distance from the groove is f, the axial dimension of the insertion guide portion is g, and the axial depth of the concave portion of the pushing portion is h, f + g ≦ h is It may be established.

本構成によれば、押込部でＣ型止め輪を軸溝まで確実に押し込むことができる。 According to this configuration, the C-shaped retaining ring can be reliably pushed into the shaft groove at the pushing portion.

また、前記軸溝の軸方向の寸法がｉであって、前記Ｃ型止め輪の軸方向の寸法がｊであるとき、ｈ＋ｊ＜ｆ＋ｇ＋ｉが成立してもよい。 Further, when the axial dimension of the shaft groove is i and the axial dimension of the C-shaped retaining ring is j, h + j <f + g + i may be established.

本構成によれば、押込部でＣ型止め輪を軸溝に押し込んだ後に、押込部がＣ型止め輪を軸溝の側面に押圧することを防止できる。したがって、Ｃ型止め輪がそのような押圧で損傷することを防止できる。 According to this configuration, it is possible to prevent the pushing portion from pressing the C-shaped retaining ring against the side surface of the shaft groove after the C-shaped retaining ring is pushed into the shaft groove by the pushing portion. Therefore, it is possible to prevent the C-shaped retaining ring from being damaged by such pressing.

また、前記押込部を前記収容部でガイドしながら前記貫通孔から突出する前記突出部の長さが長くなるように前記押込部を前記連結部に対して前記軸方向の一方側に移動させることで前記Ｃ型止め輪を前記軸溝側に移動させてもよい。 Further, while guiding the pushing portion with the accommodating portion, the pushing portion is moved to one side in the axial direction with respect to the connecting portion so that the length of the protruding portion protruding from the through hole becomes long. The C-shaped retaining ring may be moved to the shaft groove side.

本構成によれば、押込部を連結部でガイドできるので押込部の姿勢を安定させ易い。したがって、押込部で、Ｃ型止め輪を円滑に押圧できて、Ｃ型止め輪に効率的に力を付与することができ、Ｃ型止め輪を軸溝まで円滑に移動させることができる。 According to this configuration, the push-in portion can be guided by the connecting portion, so that the posture of the push-in portion can be easily stabilized. Therefore, the C-shaped retaining ring can be smoothly pressed by the pushing portion, a force can be efficiently applied to the C-shaped retaining ring, and the C-shaped retaining ring can be smoothly moved to the shaft groove.

本開示に係るＣ型止め輪取付治具及びそれを用いたＣ型止め輪の取付方法によれば、Ｃ型止め輪を短時間で取り付け易く、Ｃ型止め輪の取付時にＣ型止め輪が塑性変形することも略防止できる。 According to the C-type retaining ring mounting jig according to the present disclosure and the mounting method of the C-shaped retaining ring using the jig, the C-shaped retaining ring can be easily mounted in a short time, and the C-shaped retaining ring can be mounted when the C-shaped retaining ring is mounted. It is also possible to substantially prevent plastic deformation.

本開示の一実施形態に係るＣ型止め輪取付治具の全体構成図である。It is an overall block diagram of the C type retaining ring attachment jig which concerns on one Embodiment of this disclosure. 上記Ｃ型止め輪取付治具の断面図である。It is sectional drawing of the said C type retaining ring mounting jig. 上記Ｃ型止め輪取付治具の使用方法を説明するための斜視図である。It is a perspective view for demonstrating the usage method of the said-type retaining ring attachment jig. 上記Ｃ型止め輪取付治具と軸の関係を表す断面図である。It is sectional drawing which shows the relationship between the said C type retaining ring mounting jig and a shaft. Ｃ型止め輪を軸溝に取り付けた直後の上記Ｃ型止め輪取付治具の状態を示す図である。It is a figure which shows the state of the said C type retaining ring attachment jig immediately after attaching a C type retaining ring to a shaft groove. 変形例のＣ型止め輪取付治具を示す断面図である。It is sectional drawing which shows the C type retaining ring mounting jig of the modification. 他の変形例のＣ型止め輪取付治具の断面図である。It is sectional drawing of the C type retaining ring attachment jig of another modification. 上記他の変形例のＣ型止め輪取付治具における押込部と挿入ガイド部の斜視図である。It is a perspective view of the push-in part and the insertion guide part in the C-type retaining ring attachment jig of the other modification. 上記他の変形例のＣ型止め輪取付治具における押込部を用いてＣ型止め輪を押し込んでいる最中のＣ型止め輪取付治具の一部の断面図である。It is sectional drawing of a part of the C type retaining ring mounting jig in the process of pushing in the C type retaining ring by using the pushing part in the C type retaining ring mounting jig of the other modification. Ｃ型止め輪の止め輪孔にスナップリングプライヤの孔差込部を差し込むためにローラの外側に鏡を配置している状態を示す斜視図である。It is a perspective view which shows the state which arranges the mirror outside the roller in order to insert the hole insertion part of the snap ring pliers into the retaining ring hole of the C type retaining ring. 軸、ローラ及びＣ型止め輪からなる駆動ローラ脱落防止構造の斜視図である。It is a perspective view of the drive roller dropout prevention structure including a shaft, a roller and a C type retaining ring. Ｃ型止め輪の構造を説明する図である。It is a figure explaining the structure of the C type retaining ring. スナップリングプライヤを表す図である。It is a figure which shows the snap ring pliers. Ｃ型止め輪の使用対象の部材を説明する模式図である。It is a schematic diagram explaining the member to use the C type retaining ring. 従来のＣ型止め輪の取り付け方法を説明する模式図である。It is a schematic diagram explaining the attachment method of the conventional C type retaining ring. 従来のＣ型止め輪の取り付け方法についての問題的を説明する模式図である。It is a schematic diagram explaining the problem with the attachment method of the conventional C type retaining ring.

以下に、本開示に係る実施の形態について添付図面を参照しながら詳細に説明する。なお、以下において複数の実施形態や変形例などが含まれる場合、それらの特徴部分を適宜に組み合わせて新たな実施形態を構築することは当初から想定されている。また、以下の実施例では、図面において同一構成に同一符号を付し、重複する説明を省略する。また、複数の図面には、模式図が含まれ、異なる図間において、各部材における、縦、横、高さ等の寸法比は、必ずしも一致しない。また、以下で説明される構成要素のうち、最上位概念を示す独立請求項に記載されていない構成要素については、任意の構成要素であり、必須の構成要素ではない。また、本明細書で、「略」という文言を用いた場合、「大雑把に言って」という文言と同じ意味合いで用いており、「略〜」という要件は、人がだいたい〜のように見えれば満たされる。例を挙げれば、略円形という要件は、人がだいたい円形に見えれば満たされる。また、以下で説明する各物理量の単位としては、ＭＫＳ単位系の単位が統一して採用されてもよく、それ以外の単位系が統一して採用されてもよい。 Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. When a plurality of embodiments and modifications are included in the following, it is assumed from the beginning that a new embodiment is constructed by appropriately combining the characteristic portions thereof. Further, in the following examples, the same components are designated by the same reference numerals in the drawings, and duplicate description will be omitted. In addition, the plurality of drawings include schematic views, and the dimensional ratios such as length, width, and height of each member do not always match between different drawings. Further, among the components described below, the components not described in the independent claims indicating the highest level concept are arbitrary components and are not essential components. In addition, when the word "abbreviation" is used in this specification, it is used in the same meaning as the word "roughly speaking", and the requirement "abbreviation" is used if the person looks like "abbreviation". It is filled. For example, the requirement of a substantially circular shape is met if a person looks roughly circular. Further, as the unit of each physical quantity described below, the unit of the MKS unit system may be uniformly adopted, or other unit systems may be adopted uniformly.

図１は、本開示の一実施形態に係るＣ型止め輪取付治具１５の全体構成図であり、図２は、Ｃ型止め輪取付治具１５の断面図である。先ず、図１及び図２を用いて、Ｃ型止め輪取付治具１５の全体構成について説明する。 FIG. 1 is an overall configuration diagram of a C-type retaining ring mounting jig 15 according to an embodiment of the present disclosure, and FIG. 2 is a cross-sectional view of the C-type retaining ring mounting jig 15. First, the overall configuration of the C-shaped retaining ring mounting jig 15 will be described with reference to FIGS. 1 and 2.

図１に示すように、Ｃ型止め輪取付治具１５は、挿入ガイド部１６と、押込部２１と、その間を連結させる連結部２６とを備える。挿入ガイド部１６、及び押込部２１の夫々は、弾性変形しない材質又は弾性変形しにくい材質、例えば、金属、硬い樹脂、又は木材等で構成される。挿入ガイド部１６は、ガイド部傾斜面１７を有し、ガイド部傾斜面１７は、押込部２１から離れるにしたがって拡径するテーパ外周面になっている。ガイド部傾斜面１７は、例えば、円錐外周面の一部で構成される。 As shown in FIG. 1, the C-shaped retaining ring mounting jig 15 includes an insertion guide portion 16, a pushing portion 21, and a connecting portion 26 for connecting the insertion portion 21. Each of the insertion guide portion 16 and the push-in portion 21 is made of a material that is not elastically deformed or that is not easily elastically deformed, for example, metal, hard resin, or wood. The insertion guide portion 16 has a guide portion inclined surface 17, and the guide portion inclined surface 17 is a tapered outer peripheral surface whose diameter increases as the distance from the pushing portion 21 increases. The guide portion inclined surface 17 is composed of, for example, a part of the outer peripheral surface of the cone.

図２に示すように、挿入ガイド部１６のガイド部閉端部１９と、押込部２１の押込部開口部２３は、ガイド部傾斜面１７の軸方向に対向可能になっており、挿入ガイド部１６が、押込部開口部２３より押込部２１の内側に入り込むことが可能な構造となっている。 As shown in FIG. 2, the guide portion closed end portion 19 of the insertion guide portion 16 and the push portion opening portion 23 of the push portion 21 can face each other in the axial direction of the guide portion inclined surface 17, and the insertion guide portion 16 has a structure capable of entering the inside of the pushing portion 21 through the pushing portion opening 23.

挿入ガイド部１６は、軸方向の一方側のみが開口する内部室３０を備え、上記ガイド部閉端部１９は、内部室３０の軸方向の一方側を閉鎖する。また、挿入ガイド部１６は、内部室３０とガイド部閉端部１９における押込部２１側の端面１９ａとを連通する貫通孔３１を備える。Ｃ型止め輪取付治具１５は、基準部の一例としてのガイド部連結固定部２０を有する。ガイド部連結固定部２０は、内部室３０内に位置する。 The insertion guide portion 16 includes an internal chamber 30 that opens only on one side in the axial direction, and the guide portion closing end portion 19 closes one side of the internal chamber 30 in the axial direction. Further, the insertion guide portion 16 includes a through hole 31 that communicates the inner chamber 30 and the end surface 19a on the push-in portion 21 side of the guide portion closed end portion 19. The C-shaped retaining ring mounting jig 15 has a guide portion connecting / fixing portion 20 as an example of a reference portion. The guide portion connecting / fixing portion 20 is located in the inner chamber 30.

詳しくは、本実施例では、連結部２６は、連結部紐２７で構成される。ガイド部連結固定部２０は、貫通孔を有するブロック状部材を含み、連結部紐２７の一端部がブロック状部材の貫通孔の内周面に接着剤等で固着される。ブロック状部材は、貫通孔３１を通過不可能になっている。ブロック状部材は、ガイド部閉端部１９の内部室３０側の端面１９ｂに固着される必要がないが、連結部紐２７の一部が、貫通孔３１内に収容され、ブロック状部材が、ガイド部閉端部１９の内部室３０側の端面１９ｂに溶接や接着剤等で固着されると、連結部紐２７の取り扱い性が良好なものとなって好ましい。 Specifically, in this embodiment, the connecting portion 26 is composed of the connecting portion string 27. The guide portion connecting / fixing portion 20 includes a block-shaped member having a through hole, and one end of the connecting portion string 27 is fixed to the inner peripheral surface of the through hole of the block-shaped member with an adhesive or the like. The block-shaped member cannot pass through the through hole 31. The block-shaped member does not need to be fixed to the end surface 19b on the inner chamber 30 side of the guide portion closed end portion 19, but a part of the connecting portion string 27 is housed in the through hole 31, and the block-shaped member is formed. When the guide portion closed end portion 19 is fixed to the end surface 19b on the inner chamber 30 side by welding, an adhesive or the like, the handleability of the connecting portion string 27 is improved, which is preferable.

なお、Ｃ型止め輪取付治具１５は、ガイド部連結固定部２０を有さなくてもよく、単に、連結部紐２７の一部を貫通孔３１内に収容すると共に、連結部紐２７の一端部をガイド部閉端部１９の内部室３０側の端面１９ｂに接着剤で固着する構成でもよい。又は、連結部紐２７の一端部は、ガイド部閉端部１９の内部室３０側の端面１９ｂに固着されていなくてもよく、単に、連結部紐２７の一部を貫通孔３１内に収容すると共に、連結部紐２７の一端部にひとつ結びを形成し、連結部紐２７の一端部が貫通孔３１を通過できなくしてもよい。 The C-shaped retaining ring mounting jig 15 does not have to have the guide portion connecting and fixing portion 20, and simply accommodates a part of the connecting portion string 27 in the through hole 31 and of the connecting portion string 27. One end portion may be fixed to the end surface 19b on the inner chamber 30 side of the guide portion closed end portion 19 with an adhesive. Alternatively, one end of the connecting portion string 27 does not have to be fixed to the end surface 19b on the inner chamber 30 side of the guide portion closing end portion 19, and a part of the connecting portion string 27 is simply housed in the through hole 31. At the same time, one knot may be formed at one end of the connecting string 27 so that one end of the connecting string 27 cannot pass through the through hole 31.

連結部紐２７の他端は、押込部２１の押込部閉端部２４の押込部連結ガイド穴２５を通過可能になっており、押込部２１が連結部２６に対して相対移動できるようになっている。詳しくは、本実施例では、押込部２１は、円筒部３９の軸方向の一方側のみが円板状の押込部閉端部２４で塞がれた形状を有する。すなわち、押込部２１は、円筒部３９と押込部閉端部２４で画定された凹部４７を有する。また、押込部閉端部２４には、軸方向に延在する貫通孔で構成される押込部連結ガイド穴２５が設けられる。連結部紐２７の他端は、円筒部３９の内部を通過した後、押込部連結ガイド穴２５も通過可能になっている。連結部紐２７の他端は、押込部２１に固定されず、押込部２１から離脱可能になっている。なお、本開示では、押込部２１が円筒部３９を有しているが、押込部は、円筒外周面でない外周面を有してもよい。 The other end of the connecting portion string 27 can pass through the pushing portion connecting guide hole 25 of the pushing portion closing end portion 24 of the pushing portion 21, so that the pushing portion 21 can move relative to the connecting portion 26. ing. Specifically, in this embodiment, the push-in portion 21 has a shape in which only one side of the cylindrical portion 39 in the axial direction is closed by the disc-shaped push-in portion closed end portion 24. That is, the push-in portion 21 has a recess 47 defined by a cylindrical portion 39 and a push-in portion closed end portion 24. Further, the push-in portion closing end portion 24 is provided with a push-in portion connecting guide hole 25 formed of a through hole extending in the axial direction. After passing through the inside of the cylindrical portion 39, the other end of the connecting portion string 27 can also pass through the pushing portion connecting guide hole 25. The other end of the connecting portion string 27 is not fixed to the pushing portion 21 and can be detached from the pushing portion 21. In the present disclosure, the push-in portion 21 has the cylindrical portion 39, but the push-in portion may have an outer peripheral surface other than the outer peripheral surface of the cylinder.

押込部２１の円筒部３９の円筒内周面３９ａの内径をａ（図２参照）とし、ガイド部傾斜面１７の最大外径をｂ（図２参照）とし、軸７における軸溝８よりも先端側に位置する部分の最大外径をｃ（図１５参照）とし、外力が作用していないＣ型止め輪１の内径をｄ（図１２（ａ）参照）とし、ガイド部傾斜面１７の最小外径をｅ（図２参照）とするとき、次の式（１）が成立するようになっている。
ａ＞ｂ≧ｃ＞ｄ＞ｅ・・・（１） The inner diameter of the inner peripheral surface 39a of the cylinder of the cylindrical portion 39 of the pushing portion 21 is a (see FIG. 2), the maximum outer diameter of the inclined surface 17 of the guide portion is b (see FIG. 2), and the diameter is larger than that of the shaft groove 8 on the shaft 7. The maximum outer diameter of the portion located on the tip side is c (see FIG. 15), the inner diameter of the C-shaped retaining ring 1 on which no external force is applied is d (see FIG. 12 (a)), and the inclined surface of the guide portion 17 When the minimum outer diameter is e (see FIG. 2), the following equation (1) is established.
a> b ≧ c>d> e ... (1)

図３は、Ｃ型止め輪取付治具１５の使用方法を説明するための斜視図であり、図４は、Ｃ型止め輪取付治具１５と軸７の関係を表す断面図であり、図５は、Ｃ型止め輪１を軸溝８に取り付けた直後のＣ型止め輪取付治具１５の状態を示す図である。次に、Ｃ型止め輪取付治具１５の使い方を、主に図３〜図５を用いて説明する。 FIG. 3 is a perspective view for explaining how to use the C-shaped retaining ring mounting jig 15, and FIG. 4 is a cross-sectional view showing the relationship between the C-shaped retaining ring mounting jig 15 and the shaft 7. FIG. 5 is a diagram showing a state of the C-type retaining ring mounting jig 15 immediately after the C-shaped retaining ring 1 is attached to the shaft groove 8. Next, how to use the C-shaped retaining ring mounting jig 15 will be described mainly with reference to FIGS. 3 to 5.

先ず、図３に示すように、Ｃ型止め輪１の内周面が挿入ガイド部１６のガイド部傾斜面１７における小径側の外周面を取り囲むようにＣ型止め輪１を配置すると共に、ガイド部連結固定部２０を内部室３０内に配置し、更に、連結部紐２７が、貫通孔３１、凹部４７、押込部連結ガイド穴２５を通過している状態にする。 First, as shown in FIG. 3, the C-shaped retaining ring 1 is arranged so that the inner peripheral surface of the C-shaped retaining ring 1 surrounds the outer peripheral surface of the guide portion inclined surface 17 of the insertion guide portion 16 on the small diameter side, and the guide The part connecting fixing part 20 is arranged in the inner chamber 30, and further, the connecting part string 27 is in a state of passing through the through hole 31, the recess 47, and the pushing part connecting guide hole 25.

次に、挿入ガイド部１６を、図３に矢印Ｂに示す方向に移動させ、続いて、図４に示すように、軸７の軸端９に対向するように挿入ガイド部１６のガイド部開口部１８を対峙させ、挿入ガイド部１６の円錐台内周面３０ａ（図２参照）を軸端９の円錐台外周面９ａ（図３参照）に当接させる。詳しくは、図２に示すように、挿入ガイド部１６は、内部室３０の開口側に開口に行くにしたがって拡径するテーパ内周面としての円錐台内周面３０ａを有し、図３に示すように、軸端９は、外周側に軸方向の先端側に行くにしたがって小径となる円錐台外周面９ａを有する。また、円錐台内周面３０ａが含まれる円錐外周面の頂角と、円錐台外周面９ａが含まれる円錐外周面の頂角は、略一致する。よって、円錐台内周面３０ａを円錐台外周面９ａに当接させることができる。 Next, the insertion guide portion 16 is moved in the direction indicated by the arrow B in FIG. 3, and subsequently, as shown in FIG. 4, the guide portion opening of the insertion guide portion 16 is opposed to the shaft end 9 of the shaft 7. The portions 18 face each other, and the inner peripheral surface of the truncated cone 30a (see FIG. 2) of the insertion guide portion 16 is brought into contact with the outer peripheral surface of the truncated cone 9a (see FIG. 3) of the shaft end 9. Specifically, as shown in FIG. 2, the insertion guide portion 16 has a truncated cone inner peripheral surface 30a as a tapered inner peripheral surface whose diameter increases toward the opening on the opening side of the inner chamber 30, and is shown in FIG. As shown, the shaft end 9 has a truncated cone outer peripheral surface 9a whose diameter becomes smaller toward the tip side in the axial direction on the outer peripheral side. Further, the apex angle of the outer peripheral surface of the cone including the inner peripheral surface 30a of the truncated cone and the apex angle of the outer peripheral surface of the cone including the outer peripheral surface 9a of the truncated cone are substantially the same. Therefore, the inner peripheral surface 30a of the truncated cone can be brought into contact with the outer peripheral surface 9a of the truncated cone.

図４を参照して、円錐台内周面３０ａを円錐台外周面９ａに当接させた状態で、挿入ガイド部１６の大径側（拡径側）の端と、軸溝との軸方向の距離をｆとし、挿入ガイド部１６の軸方向の寸法をｇとし、押込部２１の円筒部３９の軸方向の寸法をｈとしたとき、次の式（２）が成立するようになっている。
ｆ＋ｇ≦ｈ・・・（２） With reference to FIG. 4, in a state where the inner peripheral surface 30a of the truncated cone is in contact with the outer peripheral surface 9a of the truncated cone, the axial direction between the large-diameter side (diameter-expanded side) end of the insertion guide portion 16 and the shaft groove. When the distance between the two is f, the axial dimension of the insertion guide portion 16 is g, and the axial dimension of the cylindrical portion 39 of the pushing portion 21 is h, the following equation (2) is established. There is.
f + g ≦ h ・ ・ ・ (2)

次に、連結部２６の他端部を持って押込部２１を連結部２６に対してＣ型止め輪１側に矢印Ｃ側に移動させ、押込部２１の開口側の端面２１ａをＣ型止め輪１に押し当てる。これにより、挿入ガイド部１６とＣ型止め輪１と押込部２１が一体となる。更に、連結部２６の他端部を持って押込部２１を連結部２６に対してＣ型止め輪１側に矢印Ｃ方向に移動させると、Ｃ型止め輪１が押込部２１の押込部開口部２３の端面２１ａで軸溝８側に押圧され、軸方向の軸溝８側に移動する。ガイド部傾斜面１７の外径は、軸溝８側に行くにしたがって拡径しているので、この移動の際、Ｃ型止め輪１は、その周方向の空隙３５（図１１参照）が徐々に広がると共に内径が徐々に広がるように変形する。そして、Ｃ型止め輪１の内径は、最終的にガイド部傾斜面１７の最大外径ｂ（図２参照）まで広がる。 Next, holding the other end of the connecting portion 26, the pushing portion 21 is moved toward the C-shaped retaining ring 1 side with respect to the connecting portion 26 toward the arrow C side, and the end surface 21a on the opening side of the pushing portion 21 is C-shaped. Press against ring 1. As a result, the insertion guide portion 16, the C-shaped retaining ring 1, and the pushing portion 21 are integrated. Further, when the pushing portion 21 is moved toward the C-shaped retaining ring 1 side in the direction of arrow C by holding the other end of the connecting portion 26, the C-shaped retaining ring 1 opens the pushing portion of the pushing portion 21. It is pressed toward the shaft groove 8 side by the end surface 21a of the portion 23, and moves to the shaft groove 8 side in the axial direction. Since the outer diameter of the guide portion inclined surface 17 increases toward the shaft groove 8 side, the gap 35 (see FIG. 11) in the circumferential direction of the C-shaped retaining ring 1 gradually increases during this movement. It deforms so that the inner diameter gradually expands as it expands. Then, the inner diameter of the C-shaped retaining ring 1 finally expands to the maximum outer diameter b (see FIG. 2) of the guide portion inclined surface 17.

更に、押込部２１でＣ型止め輪１を押圧すると、図５に示すように、Ｃ型止め輪１は、挿入ガイド部１６から軸７に遷移して軸７上を軸溝８側に移動する。そして、Ｃ型止め輪１が軸溝８に到達すると、Ｃ型止め輪１の弾性力によりＣ型止め輪１の内径が小さくなりＣ型止め輪１が軸溝８内で保持される。 Further, when the C-shaped retaining ring 1 is pressed by the pushing portion 21, the C-shaped retaining ring 1 transitions from the insertion guide portion 16 to the shaft 7 and moves on the shaft 7 toward the shaft groove 8 as shown in FIG. do. When the C-type retaining ring 1 reaches the shaft groove 8, the inner diameter of the C-type retaining ring 1 becomes smaller due to the elastic force of the C-type retaining ring 1, and the C-type retaining ring 1 is held in the shaft groove 8.

なお、（１）式において、ｂ＝ｃ（図２、図１５参照）、つまり、ガイド部傾斜面１７の最大外径が軸７における軸溝８よりも先端側に位置する部分の最大外径をｃと同一になっていると、Ｃ型止め輪１の弾性変形を最小に抑制できるため、Ｃ型止め輪１の塑性変形を防止できて好ましい。 In equation (1), b = c (see FIGS. 2 and 15), that is, the maximum outer diameter of the portion where the maximum outer diameter of the guide portion inclined surface 17 is located on the tip side of the shaft groove 8 on the shaft 7. When is the same as c, the elastic deformation of the C-shaped retaining ring 1 can be suppressed to the minimum, so that the plastic deformation of the C-shaped retaining ring 1 can be prevented, which is preferable.

更には、図４を参照して、軸溝８の軸方向の寸法をｉとし、図１２（ｂ）を参照して、Ｃ型止め輪１の軸方向の寸法をｊとしたとき、次の式（３）が成立すると、押込部２１が内部に納まった挿入ガイド部１６により矢印Ｃ方向への移動を制限されて、軸溝８に嵌入した状態のＣ型止め輪１を更に軸方向に押圧できなくなる。したがって、Ｃ型止め輪１が、軸溝８に嵌入した後、軸溝８の一方側の側面に更に押し付けられることがないので、Ｃ型止め輪１の破損を防止できて好ましい。
ｈ＋ｊ＜ｆ＋ｇ＋ｉ・・・（３） Further, when the axial dimension of the shaft groove 8 is i with reference to FIG. 4 and the axial dimension of the C-shaped retaining ring 1 is j with reference to FIG. 12 (b), the following When the equation (3) is satisfied, the insertion guide portion 16 in which the push-in portion 21 is housed limits the movement in the direction of the arrow C, and the C-shaped retaining ring 1 fitted in the shaft groove 8 is further axially moved. It becomes impossible to press. Therefore, after the C-shaped retaining ring 1 is fitted into the shaft groove 8, it is not further pressed against one side surface of the shaft groove 8, which is preferable because the C-shaped retaining ring 1 can be prevented from being damaged.
h + j <f + g + i ... (3)

次に、変形例の連結部２６について説明する。図１〜図５では連結部２６を連結部紐２７で構成した。ここで、連結部紐２７を持って、挿入ガイド部１６と押込部２１の間にＣ型止め輪１を挿入して、押込部２１を挿入ガイド部１６側に軸方向に移動させる場合、連結部紐２７を持つ必要があるのに加え、押込部２１を押し込む必要があるため、両手がふさがることになる。更には、押込部２１でＣ型止め輪１を押圧してＣ型止め輪１をガイド部傾斜面１７に沿って大径側に移動させる場合、Ｃ型止め輪１が若干傾く可能性があり、作業者によってはＣ型止め輪取付治具１５をスムーズに操作できない可能性もある。 Next, the connecting portion 26 of the modified example will be described. In FIGS. 1 to 5, the connecting portion 26 is composed of the connecting portion string 27. Here, when holding the connecting portion string 27, inserting the C-shaped retaining ring 1 between the insertion guide portion 16 and the pushing portion 21, and moving the pushing portion 21 toward the insertion guide portion 16 in the axial direction, the connecting portion 21 is connected. In addition to having to hold the part string 27, it is necessary to push in the pushing portion 21, so that both hands are occupied. Further, when the C-shaped retaining ring 1 is pressed by the pushing portion 21 to move the C-shaped retaining ring 1 to the large diameter side along the inclined surface 17 of the guide portion, the C-shaped retaining ring 1 may be slightly tilted. Depending on the operator, the C-shaped retaining ring mounting jig 15 may not be operated smoothly.

連結部２６が連結部紐２７でも作業は行うことができる。しかし、本作業を行う狭い作業環境では、片手で操作できる方が作業効率を良くし易い。そこで、図６、すなわち、変形例のＣ型止め輪取付治具１１５を示す断面図に示すように、連結部１２６を剛体であって軸方向に直線状に延在する棒部材１２８で構成した上で、棒部材１２８の軸方向の一方側端部を挿入ガイド部１１６の軸方向の他方側の端面１２０における径方向の中央部に固定し、更に、棒部材１２８の一部を押込部連結ガイド穴１２５に収容させると共に、棒部材１２８の軸方向の他方側端部を、押込部連結ガイド穴１２５から軸方向の他方側に突出させるようにしてもよい。 The work can be performed even if the connecting portion 26 is the connecting portion string 27. However, in a narrow work environment where this work is performed, it is easier to improve work efficiency if it can be operated with one hand. Therefore, as shown in FIG. 6, that is, the cross-sectional view showing the C-shaped retaining ring mounting jig 115 of the modified example, the connecting portion 126 is composed of a rod member 128 which is a rigid body and extends linearly in the axial direction. Above, one end of the rod member 128 in the axial direction is fixed to the central portion in the radial direction of the end surface 120 on the other side of the insertion guide 116 in the axial direction, and a part of the rod member 128 is connected to the pushing portion. The rod member 128 may be accommodated in the guide hole 125, and the other end portion of the rod member 128 in the axial direction may be projected from the push-in portion connecting guide hole 125 to the other side in the axial direction.

この変形例では、連結部１２６が挿入ガイド部１１６と一体に構成される剛体の棒部材１２８であるので、押込部１２１の押込部連結ガイド穴１２５の内面を、棒部材１２８でガイドできることにより、挿入ガイド部１１６に対する押込部１２１の相対位置を安定に制限できて、人が棒部材１２８を持たずに作業を行うことができ、Ｃ型止め輪取付治具１１５を片手で操作し易くなる。更には、棒部材１２８が、軸方向に直線状に延在するので、棒部材１２８にガイドされる押込部１２１も軸方向にまっすぐ押すことができるようになり、その結果、Ｃ型止め輪１をまっすぐ押すことが出来るようになる。よって、Ｃ型止め輪１の挙動を安定させることができるので、作業時間を短縮できる。なお、連結部１２６を棒部材１２８で構成した場合における押込部１２１の押込部閉端部１２４の軸方向の厚さを、連結部２６を連結部紐２７で構成した場合における押込部２１の押込部閉端部２４の軸方向の厚さよりも厚くすると、押込部１２１が棒部材１２８からの力で破損しにくくなって好ましい。 In this modification, since the connecting portion 126 is a rigid rod member 128 integrally formed with the insertion guide portion 116, the inner surface of the pushing portion connecting guide hole 125 of the pushing portion 121 can be guided by the rod member 128. The relative position of the pushing portion 121 with respect to the insertion guide portion 116 can be stably limited, a person can perform the work without holding the rod member 128, and the C-shaped retaining ring mounting jig 115 can be easily operated with one hand. Further, since the rod member 128 extends linearly in the axial direction, the pushing portion 121 guided by the rod member 128 can also be pushed straight in the axial direction, and as a result, the C-shaped retaining ring 1 You will be able to press straight. Therefore, since the behavior of the C-shaped retaining ring 1 can be stabilized, the working time can be shortened. The thickness of the push-in portion closed end portion 124 of the push-in portion 121 when the connecting portion 126 is composed of the rod member 128 in the axial direction, and the push-in portion 21 when the connecting portion 26 is composed of the connecting portion string 27. When the thickness is larger than the axial thickness of the closed end portion 24, the pushing portion 121 is less likely to be damaged by the force from the rod member 128, which is preferable.

次に、変形例の押込部２２１について説明する。上述の押込部２１の場合、押込部２１が、弾性変形しにくい材料で構成されているので、Ｃ型止め輪１は、挿入ガイド部１６のガイド部傾斜面１７に沿って内径が広がっていくが、押込部開口部２３の内径ａ（図２参照）は変化しない。よって、押込部開口部２３の端面は、Ｃ型止め輪１の軸方向の移動範囲の大部分において、Ｃ型止め輪１の端面の外周側を押圧することになる。しかしながら、本来なら、Ｃ型止め輪１においてガイド部傾斜面１７と接するＣ型止め輪１の端面の内周側を押す方が、Ｃ型止め輪１の軸方向の内周側の変形を抑制できて、Ｃ型止め輪１を円滑かつ効率的に移動させることができる。 Next, the push-in portion 221 of the modified example will be described. In the case of the above-mentioned pushing portion 21, since the pushing portion 21 is made of a material that is not easily elastically deformed, the inner diameter of the C-shaped retaining ring 1 expands along the inclined surface 17 of the guide portion of the insertion guide portion 16. However, the inner diameter a (see FIG. 2) of the push-in portion opening 23 does not change. Therefore, the end surface of the push-in portion opening 23 presses the outer peripheral side of the end surface of the C-type retaining ring 1 in most of the axial movement range of the C-type retaining ring 1. However, originally, pushing the inner peripheral side of the end surface of the C-shaped retaining ring 1 in contact with the inclined surface 17 of the guide portion in the C-shaped retaining ring 1 suppresses the deformation of the inner peripheral side of the C-shaped retaining ring 1 in the axial direction. As a result, the C-shaped retaining ring 1 can be moved smoothly and efficiently.

図７は、そのような押込みを実現可能な押込部２２１を含む他の変形例のＣ型止め輪取付治具２１５の断面図であり、図８は、そのような押込部２２１と挿入ガイド部１６の斜視図であり、図９は、そのような押込部２２１を用いてＣ型止め輪１を押し込んでいる最中のＣ型止め輪取付治具２１５の一部の断面図である。 FIG. 7 is a cross-sectional view of a C-shaped retaining ring mounting jig 215 of another modified example including a pushing portion 221 capable of realizing such pushing, and FIG. 8 shows such a pushing portion 221 and an insertion guide portion. 16 is a perspective view, and FIG. 9 is a cross-sectional view of a part of the C-type retaining ring mounting jig 215 in the process of pushing the C-type retaining ring 1 using such a pushing portion 221.

この変形例のＣ型止め輪取付治具２１５では、図２を参照して、挿入ガイド部１６の外周面の最大外径をｂとし、挿入ガイド部１６の外周面の最小外径をｅとし、更に、図７を参照して、押込部２１に外力が付与されていない状態での凹部２４７の円筒内周面２３９ａの内径をｋとし、更には、図１２（ａ）を参照して、Ｃ型止め輪１の内径をｄとするとき、次の式（４）が成立する。
ｂ＞ｄ≧ｋ＞ｅ・・・（４） In the C-shaped retaining ring mounting jig 215 of this modified example, the maximum outer diameter of the outer peripheral surface of the insertion guide portion 16 is b, and the minimum outer diameter of the outer peripheral surface of the insertion guide portion 16 is e, with reference to FIG. Further, referring to FIG. 7, the inner diameter of the inner peripheral surface of the cylinder 239a of the recess 247 in a state where no external force is applied to the pushing portion 21 is k, and further, referring to FIG. 12 (a). When the inner diameter of the C-shaped retaining ring 1 is d, the following equation (4) holds.
b> d ≧ k> e ... (4)

この変形例では、ｂ＞ｋとなっている。したがって、ｋがｂまで広がらないと押込部２２１でＣ型止め輪１を押すことができない。このため、図８に示すように押込部２２１をゴム材等の弾性材料で構成し、押込部円周面２２２に周方向に間隔をあけて軸方向に延在するスリット２２９を複数設けることにより、押込部円周面２２２を内側から外側に広げることができるようにしている。各スリット２２９は、軸方向の一方側及び径方向の両側が開口している。これにより、図９に示すように、ガイド部傾斜面１７に沿って押込部開口部２２３を広げることができ、Ｃ型止め輪１の内周側を押すことができる。また、ｋ＞ｅの条件を満足している。したがって、押込部開口部２２３をガイド部傾斜面１７における小径側の端部上に円滑に位置させることができる。 In this modification, b> k. Therefore, the C-shaped retaining ring 1 cannot be pushed by the pushing portion 221 unless k extends to b. Therefore, as shown in FIG. 8, the push-in portion 221 is made of an elastic material such as a rubber material, and a plurality of slits 229 extending in the axial direction at intervals in the circumferential direction are provided on the circumferential surface 222 of the push-in portion. , The peripheral surface 222 of the push-in portion can be expanded from the inside to the outside. Each slit 229 is open on one side in the axial direction and on both sides in the radial direction. As a result, as shown in FIG. 9, the pushing portion opening 223 can be widened along the inclined surface 17 of the guide portion, and the inner peripheral side of the C-shaped retaining ring 1 can be pushed. Moreover, the condition of k> e is satisfied. Therefore, the push-in portion opening 223 can be smoothly positioned on the end portion on the small diameter side of the guide portion inclined surface 17.

以上、Ｃ型止め輪取付治具１５は、Ｃ型止め輪１を軸７の軸溝８に取り付けるのに用いられる。また、Ｃ型止め輪取付治具１５は、軸方向の一方側に行くにしたがって拡径するガイド部傾斜面（テーパ外周面）１７を有する挿入ガイド部１６と、挿入ガイド部１６の全てを収容可能な凹部４７を有する押込部２１と、を備える。また、Ｃ型止め輪取付治具１５では、押込部２１の開口側の端面２１ａで、ガイド部傾斜面１７を囲むように配置したＣ型止め輪１の端面を押圧することで、Ｃ型止め輪１をガイド部傾斜面１７の拡径側にＣ型止め輪１の内径を広げるように移動させる。 As described above, the C-shaped retaining ring mounting jig 15 is used for mounting the C-shaped retaining ring 1 in the shaft groove 8 of the shaft 7. Further, the C-shaped retaining ring mounting jig 15 accommodates all of the insertion guide portion 16 having the guide portion inclined surface (tapered outer peripheral surface) 17 whose diameter increases toward one side in the axial direction, and the insertion guide portion 16. A push-in portion 21 having a possible recess 47 is provided. Further, in the C-shaped retaining ring mounting jig 15, the C-shaped retaining ring 1 is pressed by the end surface 21a on the opening side of the pushing portion 21 so as to surround the inclined surface 17 of the guide portion. The ring 1 is moved to the enlarged diameter side of the inclined surface 17 of the guide portion so as to widen the inner diameter of the C-shaped retaining ring 1.

したがって、Ｃ型止め輪１の取付時にＣ型止め輪１が作業スペースまで飛び出すことを略防止できるので、Ｃ型止め輪１の捜索に時間を要することがない。更には、作業者の技量に関係なく挿入ガイド部１６とＣ型止め輪１と押込部２１を組み合わせて保持した状態で挿入ガイド部１６を軸７の軸端９に押し当て、その状態で押込部２１を押すだけで短時間でＣ型止め輪１を軸溝８に挿入できる。また、Ｃ型止め輪１を作業者が広げることがないため、Ｃ型止め輪１の塑性変形による保持力低下も防止できる。更には、挿入ガイド部１６を軸端９に当てて押込部２１を押すという単純な作業のため作業ミスも発生しない。したがって、作業者の技量に無関係に、Ｃ型止め輪１を短時間で取り付け易く、Ｃ型止め輪１の取付時にＣ型止め輪１が塑性変形することも略防止できる。 Therefore, it is possible to substantially prevent the C-type retaining ring 1 from jumping out to the work space when the C-type retaining ring 1 is attached, so that it does not take time to search for the C-type retaining ring 1. Further, the insertion guide portion 16 is pressed against the shaft end 9 of the shaft 7 in a state where the insertion guide portion 16, the C-shaped retaining ring 1 and the push portion 21 are combined and held regardless of the skill of the operator, and the insertion guide portion 16 is pushed in that state. The C-shaped retaining ring 1 can be inserted into the shaft groove 8 in a short time simply by pushing the portion 21. Further, since the operator does not spread the C-shaped retaining ring 1, it is possible to prevent a decrease in the holding force due to the plastic deformation of the C-shaped retaining ring 1. Further, since the insertion guide portion 16 is brought into contact with the shaft end 9 and the pushing portion 21 is pushed, no work error occurs. Therefore, regardless of the skill of the operator, the C-shaped retaining ring 1 can be easily attached in a short time, and the C-shaped retaining ring 1 can be substantially prevented from being plastically deformed when the C-shaped retaining ring 1 is attached.

また、挿入ガイド部１６が軸方向のガイド部傾斜面１７の大径側に円錐台内周面（テーパ内周面）３０ａを有してもよく、円錐台内周面３０ａの内径が、軸方向の大径側に行くにしたがって大きくなっていてもよい。 Further, the insertion guide portion 16 may have a truncated cone inner peripheral surface (tapered inner peripheral surface) 30a on the large diameter side of the guide portion inclined surface 17 in the axial direction, and the inner diameter of the truncated cone inner peripheral surface 30a is the shaft. It may become larger toward the larger diameter side in the direction.

本構成によれば、挿入ガイド部１６の円錐台内周面３０ａを軸７の軸端９に押し当てることができる。したがって、軸７に対する挿入ガイド部１６の静止摩擦力を大きくでき、Ｃ型止め輪１の取付作業中に挿入ガイド部１６を軸に対して安定に静止させることができる。なお、挿入ガイド部は、ガイド部傾斜面の大径側に当該大径側に行くにしたがって拡径するテーパ内周面を有していると好ましいが、テーパ内周面を有さなくてもよい。 According to this configuration, the inner peripheral surface 30a of the truncated cone of the insertion guide portion 16 can be pressed against the shaft end 9 of the shaft 7. Therefore, the static frictional force of the insertion guide portion 16 with respect to the shaft 7 can be increased, and the insertion guide portion 16 can be stably stopped with respect to the shaft during the mounting work of the C-shaped retaining ring 1. It is preferable that the insertion guide portion has a tapered inner peripheral surface on the large diameter side of the inclined surface of the guide portion, which increases in diameter toward the large diameter side, but the insertion guide portion does not have to have the tapered inner peripheral surface. good.

また、凹部４７の底部を構成する押込部閉端部２４には、軸方向に延在する押込部連結ガイド穴（貫通孔）２５が設けられてもよく、使用状態で、挿入ガイド部１６に固定又は係止されるガイド部連結固定部（基準部）２０、及びガイド部連結固定部２０に繋がって押込部連結ガイド穴２５に収容される収容部を有する連結部２６を備えてもよい。そして、使用状態において、押込部２１を上記収容部でガイドしながら連結部２６において押込部連結ガイド穴２５から突出する突出部５９（図２参照）の長さが長くなるように押込部２１を連結部２６に対して軸方向の一方側に移動させてもよい。 Further, the push-in portion closing end portion 24 constituting the bottom portion of the recess 47 may be provided with a push-in portion connecting guide hole (through hole) 25 extending in the axial direction, and the insertion guide portion 16 may be provided in the used state. It may be provided with a guide portion connecting and fixing portion (reference portion) 20 to be fixed or locked, and a connecting portion 26 having an accommodating portion connected to the guide portion connecting and fixing portion 20 and accommodated in the pushing portion connecting guide hole 25. Then, in the used state, while guiding the push-in portion 21 with the accommodating portion, the push-in portion 21 is set so that the length of the protruding portion 59 (see FIG. 2) protruding from the push-in portion connection guide hole 25 in the connecting portion 26 becomes longer. It may be moved to one side in the axial direction with respect to the connecting portion 26.

本構成によれば、押込部２１を連結部２６でガイドできるので押込部２１の姿勢を安定させ易い。したがって、押込部２１で、Ｃ型止め輪１を円滑に押圧できて、Ｃ型止め輪１に効率的に力を付与することができる。 According to this configuration, since the pushing portion 21 can be guided by the connecting portion 26, it is easy to stabilize the posture of the pushing portion 21. Therefore, the pushing portion 21 can smoothly press the C-shaped retaining ring 1, and the force can be efficiently applied to the C-shaped retaining ring 1.

また、連結部１２６が、軸方向に延在する棒部材１２８でもよく、棒部材１２８の一方側の端部が、挿入ガイド部１１６の軸方向の端面における径方向の中央部に固定されていてもよい。 Further, the connecting portion 126 may be a rod member 128 extending in the axial direction, and one end of the rod member 128 is fixed to the radial center portion of the axial end surface of the insertion guide portion 116. May be good.

本構成によれば、Ｃ型止め輪取付治具１１５を片手で操作し易くなる。更には、棒部材１２８が、軸方向に直線状に延在するので、棒部材１２８にガイドされる押込部１２１も軸方向にまっすぐ押すことができるようになり、その結果、Ｃ型止め輪１をまっすぐ押すことが出来るようになる。よって、Ｃ型止め輪１を円滑に移動させることができ、作業時間を、短縮することができる。 According to this configuration, the C-shaped retaining ring mounting jig 115 can be easily operated with one hand. Further, since the rod member 128 extends linearly in the axial direction, the pushing portion 121 guided by the rod member 128 can also be pushed straight in the axial direction, and as a result, the C-shaped retaining ring 1 You will be able to press straight. Therefore, the C-shaped retaining ring 1 can be smoothly moved, and the working time can be shortened.

また、凹部４７が円筒内周面３９ａを含んでもよく、円筒内周面３９ａの内径がａであって、ガイド部傾斜面１７の最大外径がｂであるとき、ａ＞ｂが成立してもよい。 Further, the recess 47 may include the inner peripheral surface of the cylinder 39a, and when the inner diameter of the inner peripheral surface of the cylinder 39a is a and the maximum outer diameter of the inclined surface 17 of the guide portion is b, a> b is established. May be good.

本構成によれば、Ｃ型止め輪１を押込部２１で挿入ガイド部１６を超えて軸溝８まで押圧することができる。 According to this configuration, the C-shaped retaining ring 1 can be pressed by the pushing portion 21 beyond the insertion guide portion 16 to the shaft groove 8.

また、押込部２２１が弾性材料で構成され、ガイド部傾斜面１７の最大外径がｂであって、ガイド部傾斜面１７の最小外径がｅであり、押込部２２１に外力が付与されていない状態での凹部２４７の円筒内周面２３９ａの内径がｋであるとき、ｂ＞ｋ＞ｅが成立し、押込部２２１において凹部２４７を画定している環状部２５０（図８参照）に、周方向に間隔をおいて位置する複数のスリット２２９が設けられ、各スリット２２９は、環状部２５０の径方向の両側と軸方向の一方側に開口してもよい。 Further, the pushing portion 221 is made of an elastic material, the maximum outer diameter of the guide portion inclined surface 17 is b, the minimum outer diameter of the guide portion inclined surface 17 is e, and an external force is applied to the pushing portion 221. When the inner diameter of the cylindrical inner peripheral surface 239a of the recess 247 in the absence state is k, b> k> e is established, and the annular portion 250 (see FIG. 8) defining the recess 247 in the pushing portion 221 is formed. A plurality of slits 229 located at intervals in the circumferential direction are provided, and each slit 229 may be opened on both sides in the radial direction and one side in the axial direction of the annular portion 250.

本構成によれば、ガイド部傾斜面１７に沿って押込部２２１の開口部を広げることができ、Ｃ型止め輪１の取付の際にＣ型止め輪１の内周側を押すことができる。したがって、Ｃ型止め輪１の内周側部分の軸方向の変形を抑制できて、Ｃ型止め輪１を円滑かつ効率的に移動させることができ、Ｃ型止め輪１の作業効率を高くできる。 According to this configuration, the opening of the pushing portion 221 can be widened along the inclined surface 17 of the guide portion, and the inner peripheral side of the C-shaped retaining ring 1 can be pushed when the C-shaped retaining ring 1 is attached. .. Therefore, the deformation of the inner peripheral side portion of the C-shaped retaining ring 1 in the axial direction can be suppressed, the C-shaped retaining ring 1 can be moved smoothly and efficiently, and the working efficiency of the C-shaped retaining ring 1 can be improved. ..

また、本開示に係るＣ型止め輪１の取付方法は、本開示のＣ型止め輪取付治具１５を用いて軸７の軸溝８にＣ型止め輪１を取り付ける。また、Ｃ型止め輪１の取付方法は、Ｃ型止め輪取付治具１５の押込部２１の開口側の端面２１ａで、ガイド部傾斜面１７を囲むように配置したＣ型止め輪１の端面を押圧することで、Ｃ型止め輪１をガイド部傾斜面１７の拡径側にＣ型止め輪１の内径を広げるように移動させた後、更に、押込部２１の端面２１ａで、Ｃ型止め輪１の端面を押圧することで、Ｃ型止め輪１をガイド部傾斜面１７からガイド部傾斜面１７に連なるように位置させた軸７の外周面上に移動させ、更に、押込部２１の端面２１ａで、Ｃ型止め輪１の端面を押圧することで、Ｃ型止め輪１をその外周面上を軸７の軸溝８まで移動させる。 Further, in the method of attaching the C-type retaining ring 1 according to the present disclosure, the C-type retaining ring 1 is attached to the shaft groove 8 of the shaft 7 by using the C-type retaining ring attachment jig 15 of the present disclosure. Further, the method of attaching the C-type retaining ring 1 is the end surface 21a on the opening side of the push-in portion 21 of the C-type retaining ring mounting jig 15, and the end surface of the C-type retaining ring 1 arranged so as to surround the inclined surface 17 of the guide portion. By pressing, the C-type retaining ring 1 is moved to the enlarged diameter side of the guide portion inclined surface 17 so as to widen the inner diameter of the C-type retaining ring 1, and then the end surface 21a of the pushing portion 21 is used for the C-type. By pressing the end surface of the retaining ring 1, the C-shaped retaining ring 1 is moved onto the outer peripheral surface of the shaft 7 positioned so as to be connected to the inclined surface 17 of the guide portion from the inclined surface 17 of the guide portion, and further, the pushing portion 21 By pressing the end face of the C-shaped retaining ring 1 with the end face 21a of the C-shaped retaining ring 1, the C-shaped retaining ring 1 is moved on the outer peripheral surface thereof to the shaft groove 8 of the shaft 7.

本開示によれば、Ｃ型止め輪１の取付時にＣ型止め輪１が作業スペースまで飛び出すことを略防止できるので、Ｃ型止め輪１の捜索に時間を要することがない。更には、作業者の技量に関係なく挿入ガイド部１６とＣ型止め輪１と押込部２１を組み合わせて保持した状態で挿入ガイド部１６を軸７の軸端９に押し当て、その状態で押込部２１を押すだけで短時間でＣ型止め輪１を軸溝８に挿入できる。また、Ｃ型止め輪１を作業者が広げることがないため、Ｃ型止め輪１の塑性変形による保持力低下も防止できる。更には、挿入ガイド部１６を軸端９に当てて押込部２１を押すという単純な作業のため作業ミスも発生しない。したがって、作業者の技量に無関係に、Ｃ型止め輪１を短時間で取り付け易く、Ｃ型止め輪１の取付時にＣ型止め輪１が塑性変形することも略防止できる。 According to the present disclosure, it is possible to substantially prevent the C-type retaining ring 1 from jumping out to the work space when the C-type retaining ring 1 is attached, so that it does not take time to search for the C-type retaining ring 1. Further, the insertion guide portion 16 is pressed against the shaft end 9 of the shaft 7 in a state where the insertion guide portion 16, the C-shaped retaining ring 1 and the push portion 21 are combined and held regardless of the skill of the operator, and the insertion guide portion 16 is pushed in that state. The C-shaped retaining ring 1 can be inserted into the shaft groove 8 in a short time simply by pushing the portion 21. Further, since the operator does not spread the C-shaped retaining ring 1, it is possible to prevent a decrease in the holding force due to the plastic deformation of the C-shaped retaining ring 1. Further, since the insertion guide portion 16 is brought into contact with the shaft end 9 and the pushing portion 21 is pushed, no work error occurs. Therefore, regardless of the skill of the operator, the C-shaped retaining ring 1 can be easily attached in a short time, and the C-shaped retaining ring 1 can be substantially prevented from being plastically deformed when the C-shaped retaining ring 1 is attached.

また、挿入ガイド部１６の中心軸が軸７の中心軸と略同一直線上に位置している状態で軸７に対して挿入ガイド部１６が相対移動不可になるまで挿入ガイド部１６を軸７に押圧することで、軸７をガイド部傾斜面１７に連なるように位置させるようにし、軸７がガイド部傾斜面１７に連なっている状態での、挿入ガイド部１６の大径側の端と軸溝８との軸方向の距離がｆであり、挿入ガイド部１６の軸方向の寸法がｇであり、押込部２１の凹部４７の軸方向の深さがｈであるとき、ｆ＋ｇ≦ｈが成立してもよい。 Further, in a state where the central axis of the insertion guide portion 16 is located on substantially the same straight line as the central axis of the shaft 7, the insertion guide portion 16 is rotated by the shaft 7 until the insertion guide portion 16 cannot move relative to the shaft 7. By pressing against, the shaft 7 is positioned so as to be connected to the inclined surface 17 of the guide portion, and with the end of the insertion guide portion 16 on the large diameter side in a state where the shaft 7 is connected to the inclined surface 17 of the guide portion. When the axial distance from the shaft groove 8 is f, the axial dimension of the insertion guide portion 16 is g, and the axial depth of the recess 47 of the pushing portion 21 is h, f + g ≦ h is It may be established.

本構成によれば、押込部２１でＣ型止め輪１を軸溝８まで確実に押し込むことができる。 According to this configuration, the C-shaped retaining ring 1 can be reliably pushed into the shaft groove 8 by the pushing portion 21.

また、軸溝８の軸方向の寸法がｉであって、Ｃ型止め輪１の軸方向の寸法がｊであるとき、ｈ＋ｊ＜ｆ＋ｇ＋ｉが成立してもよい。 Further, when the axial dimension of the shaft groove 8 is i and the axial dimension of the C-shaped retaining ring 1 is j, h + j <f + g + i may be established.

本構成によれば、押込部２１でＣ型止め輪１を軸溝８に押し込んだ後に、押込部２１がＣ型止め輪１を軸溝８の側面に押圧することを防止できる。したがって、Ｃ型止め輪１がそのような押圧で損傷することを防止できる。 According to this configuration, it is possible to prevent the pushing portion 21 from pressing the C-shaped retaining ring 1 against the side surface of the shaft groove 8 after the C-shaped retaining ring 1 is pushed into the shaft groove 8 by the pushing portion 21. Therefore, it is possible to prevent the C-shaped retaining ring 1 from being damaged by such pressing.

また、押込部２１を連結部２６における収容部でガイドしながら連結部２６において押込部連結ガイド穴２５から突出する突出部５９の長さが長くなるように押込部２１を連結部２６に対して軸方向の一方側に移動させることでＣ型止め輪１を軸溝８側に移動させてもよい。 Further, while guiding the pushing portion 21 with the accommodating portion in the connecting portion 26, the pushing portion 21 is moved with respect to the connecting portion 26 so that the length of the protruding portion 59 protruding from the pushing portion connecting guide hole 25 in the connecting portion 26 becomes longer. The C-shaped retaining ring 1 may be moved to the shaft groove 8 side by moving it to one side in the axial direction.

本構成によれば、押込部２１を連結部２６でガイドできるので押込部２１の姿勢を安定させ易い。したがって、押込部２１で、Ｃ型止め輪１を円滑に押圧できて、Ｃ型止め輪１に効率的に力を付与することができ、Ｃ型止め輪１を軸溝８まで円滑に移動させることができる。 According to this configuration, since the pushing portion 21 can be guided by the connecting portion 26, it is easy to stabilize the posture of the pushing portion 21. Therefore, the pushing portion 21 can smoothly press the C-shaped retaining ring 1, efficiently apply a force to the C-shaped retaining ring 1, and smoothly move the C-shaped retaining ring 1 to the shaft groove 8. be able to.

なお、本開示は、上記実施形態およびその変形例に限定されるものではなく、本願の特許請求の範囲に記載された事項およびその均等な範囲において種々の改良や変更が可能である。例えば、上記実施形態では、挿入ガイド部１６の外周面の全てがテーパ外周面（ガイド部傾斜面１７）である場合について説明した。しかし、本開示のＣ型止め輪取付治具では、挿入ガイド部は、テーパ外周面（ガイド部傾斜面）と、その大径側の端につながると共に当該テーパ外周面の最大外径と略同じ外径を有する円筒外周面とを有してもよい。 The present disclosure is not limited to the above-described embodiment and its modifications, and various improvements and changes can be made within the scope of the claims of the present application and the equivalent scope thereof. For example, in the above embodiment, the case where all the outer peripheral surfaces of the insertion guide portion 16 are tapered outer peripheral surfaces (guide portion inclined surfaces 17) has been described. However, in the C-shaped stop ring mounting jig of the present disclosure, the insertion guide portion is connected to the tapered outer peripheral surface (guide portion inclined surface) and the end on the large diameter side thereof, and is substantially the same as the maximum outer diameter of the tapered outer peripheral surface. It may have a cylindrical outer peripheral surface having an outer diameter.

１ Ｃ型止め輪、 ２ 止め輪孔、 ３ スナップリングプライヤ、 ４ グリップ、 ５ 支点、 ６ 孔差込部、 ７ 軸、 ８ 軸溝、 ９ 軸端、 ９ａ 円錐台外周面、 １０ 軸段差部、 １１ ローラ、 １２ 軸受、 １４ 鏡、 １５,１１５,２１５ Ｃ型止め輪取付治具、 １６,１１６ 挿入ガイド部、 １７ ガイド部傾斜面、 １８ ガイド部開口部、 １９ ガイド部閉端部、 １９ａ,１９ｂ 端面、 ２０ ガイド部連結固定部、 ２１,１２１,２２１ 押込部、 ２１ａ 端面、 ２３,２２３ 押込部開口部、 ２４,１２４ 押込部閉端部、 ２５,１２５ 押込部連結ガイド穴、 ２６,１２６ 連結部、 ２７ 連結部紐、 ３０ 内部室、 ３０ａ 円錐台内周面、 ３１ 貫通孔、 ３９ 円筒部、 ３９ａ,２３９ａ 円筒内周面、 ４７,２４７ 凹部、 ５９ 突出部、 １２０ 端面、 １２８ 棒部材、 ２２２ 押込部円周面、 ２２９ スリット、 ２５０ 環状部。 1 C-shaped retaining ring, 2 retaining ring hole, 3 snap ring plier, 4 grip, 5 fulcrum, 6 hole insertion part, 7 axis, 8 axis groove, 9 axis end, 9a conical base outer peripheral surface, 10 axis stepped part, 11 Roller, 12 Bearing, 14 Mirror, 15,115,215 C-type retaining ring mounting jig, 16,116 Insertion guide part, 17 Guide part inclined surface, 18 Guide part opening, 19 Guide part closed end, 19a, 19b End face, 20 Guide part connection fixing part, 21,121,221 Pushing part, 21a End face, 23,223 Pushing part opening, 24,124 Pushing part closing end, 25,125 Pushing part connecting guide hole, 26,126 Connecting part, 27 Connecting part string, 30 Inner chamber, 30a Conical stand inner peripheral surface, 31 Through hole, 39 Cylindrical part, 39a, 239a Cylindrical inner peripheral surface, 47,247 Recessed part, 59 Protruding part, 120 End face, 128 Bar member , 222 Push-in part circumferential surface, 229 slits, 250 annular part.

Claims (10)

Ｃ型止め輪を軸の軸溝に取り付けるのに用いるＣ型止め輪取付治具であって、
軸方向の一方側に行くにしたがって拡径するテーパ外周面を有する挿入ガイド部と、
前記挿入ガイド部の全てを収容可能な凹部を有する押込部と、
を備え、
前記押込部の開口側の端面で、前記テーパ外周面を囲むように配置したＣ型止め輪の端面を押圧することで、前記Ｃ型止め輪を前記テーパ外周面の拡径側に前記Ｃ型止め輪の内径を広げるように移動させる、Ｃ型止め輪取付治具。 A C-type retaining ring mounting jig used to attach a C-shaped retaining ring to the shaft groove of the shaft.
An insertion guide portion having a tapered outer peripheral surface whose diameter increases toward one side in the axial direction,
A push-in portion having a recess capable of accommodating all of the insertion guide portions,
With
By pressing the end surface of the C-shaped retaining ring arranged so as to surround the tapered outer peripheral surface with the end surface on the opening side of the pushing portion, the C-shaped retaining ring is placed on the enlarged diameter side of the tapered outer peripheral surface. A C-shaped retaining ring mounting jig that moves the inner diameter of the retaining ring so as to widen it. 前記挿入ガイド部が前記軸方向のテーパ外周面の大径側にテーパ内周面を有し、
前記テーパ内周面の内径が、前記軸方向の大径側に行くにしたがって大きくなっている、請求項１に記載のＣ型止め輪取付治具。 The insertion guide portion has a tapered inner peripheral surface on the large diameter side of the tapered outer peripheral surface in the axial direction.
The C-shaped retaining ring mounting jig according to claim 1, wherein the inner diameter of the inner peripheral surface of the taper increases toward the larger diameter side in the axial direction. 前記凹部の底部には、前記軸方向に延在する貫通孔が設けられ、
使用状態で、前記挿入ガイド部に固定又は係止される基準部、及び前記基準部に繋がって前記貫通孔に収容される収容部を有する連結部を備え、
前記使用状態において、前記押込部を前記収容部でガイドしながら前記連結部において前記貫通孔から突出する突出部の長さが長くなるように前記連結部に対して前記軸方向の一方側に移動させる、請求項１又は２に記載のＣ型止め輪取付治具。 A through hole extending in the axial direction is provided at the bottom of the recess.
It is provided with a reference portion that is fixed or locked to the insertion guide portion in the used state, and a connecting portion that has an accommodating portion that is connected to the reference portion and accommodated in the through hole.
In the used state, the pushing portion is guided by the accommodating portion and moved to one side in the axial direction with respect to the connecting portion so that the length of the protruding portion protruding from the through hole in the connecting portion becomes long. The C-type retaining ring mounting jig according to claim 1 or 2. 前記連結部が、前記軸方向に延在する棒部材であり、
前記棒部材の一方側の端部が、前記挿入ガイド部の前記軸方向の端面における径方向の中央部に固定されている、請求項３に記載のＣ型止め輪取付治具。 The connecting portion is a rod member extending in the axial direction.
The C-shaped retaining ring mounting jig according to claim 3, wherein one end of the rod member is fixed to a radial center portion of the insertion guide portion in the axial end surface. 前記凹部が円筒内周面を含み、
前記円筒内周面の内径がａであって、テーパ外周面の最大外径がｂであるとき、ａ＞ｂが成立する、請求項１から４までのいずれか１つに記載のＣ型止め輪取付治具。 The recess includes the inner peripheral surface of the cylinder.
The C-shaped retaining ring according to any one of claims 1 to 4, wherein a> b holds when the inner diameter of the inner peripheral surface of the cylinder is a and the maximum outer diameter of the outer peripheral surface of the taper is b. Ring mounting jig. 前記押込部が弾性材料で構成され、
前記テーパ外周面の最大外径がｂであって、前記テーパ外周面の最小外径がｅであり、前記押込部に外力が付与されていない状態での前記凹部の内径がｋであるとき、ｂ＞ｋ＞ｅが成立し、
前記押込部において前記凹部を画定している環状部に、周方向に間隔をおいて位置する複数のスリットが設けられ、
前記各スリットは、前記環状部の径方向の両側と前記軸方向の一方側に開口している、請求項１から４のいずれか１つに記載のＣ型止め輪取付治具。 The push-in portion is made of an elastic material.
When the maximum outer diameter of the tapered outer peripheral surface is b, the minimum outer diameter of the tapered outer peripheral surface is e, and the inner diameter of the concave portion is k in a state where no external force is applied to the pushing portion. b>k> e holds,
A plurality of slits located at intervals in the circumferential direction are provided in the annular portion defining the recess in the push-in portion.
The C-shaped retaining ring mounting jig according to any one of claims 1 to 4, wherein each slit is open on both sides in the radial direction and one side in the axial direction of the annular portion. 請求項１から６のいずれか１つに記載のＣ型止め輪取付治具を用いて前記軸の前記軸溝に前記Ｃ型止め輪を取り付けるＣ型止め輪の取付方法であって、
前記Ｃ型止め輪取付治具の前記押込部の開口側の端面で、前記テーパ外周面を囲むように配置した前記Ｃ型止め輪の端面を押圧することで、前記Ｃ型止め輪を前記テーパ外周面の拡径側に前記Ｃ型止め輪の内径を広げるように移動させた後、更に、前記押込部の前記端面で、前記Ｃ型止め輪の端面を押圧することで、前記Ｃ型止め輪を前記テーパ外周面から前記テーパ外周面に連なるように位置させた前記軸の外周面上に移動させ、更に、前記押込部の前記端面で、前記Ｃ型止め輪の端面を押圧することで、前記Ｃ型止め輪をその外周面上を前記軸の前記軸溝まで移動させる、Ｃ型止め輪の取付方法。 A method of mounting a C-shaped retaining ring for mounting the C-shaped retaining ring in the shaft groove of the shaft using the C-shaped retaining ring mounting jig according to any one of claims 1 to 6.
By pressing the end face of the C-shaped retaining ring arranged so as to surround the tapered outer peripheral surface with the end face of the C-shaped retaining ring mounting jig on the opening side of the pushing portion, the C-shaped retaining ring is tapered. The C-shaped retaining ring is moved to the enlarged diameter side of the outer peripheral surface so as to widen the inner diameter of the C-shaped retaining ring, and then the end surface of the C-shaped retaining ring is pressed by the end face of the pushing portion to further press the C-shaped retaining ring. By moving the ring from the tapered outer peripheral surface onto the outer peripheral surface of the shaft positioned so as to be continuous with the tapered outer peripheral surface, and further pressing the end surface of the C-shaped retaining ring with the end surface of the pushing portion. A method for attaching a C-shaped retaining ring, which moves the C-shaped retaining ring on the outer peripheral surface of the shaft to the shaft groove of the shaft. 前記挿入ガイド部の中心軸が前記軸の中心軸と略同一直線上に位置している状態で前記軸に対して前記挿入ガイド部が相対移動不可になるまで前記挿入ガイド部を前記軸に押圧することで、前記軸を前記テーパ外周面に連なるように位置させるようにし、
前記軸が前記テーパ外周面に連なっている状態での、前記挿入ガイド部の大径側の端と前記軸溝との軸方向の距離がｆであり、前記挿入ガイド部の前記軸方向の寸法がｇであり、前記押込部の前記凹部の前記軸方向の深さがｈであるとき、ｆ＋ｇ≦ｈが成立する、請求項７に記載のＣ型止め輪の取付方法。 In a state where the central axis of the insertion guide portion is located on substantially the same straight line as the central axis of the axis, the insertion guide portion is pressed against the shaft until the insertion guide portion cannot move relative to the axis. By doing so, the shaft is positioned so as to be continuous with the tapered outer peripheral surface.
The axial distance between the large-diameter end of the insertion guide portion and the shaft groove in a state where the shaft is continuous with the tapered outer peripheral surface is f, and the axial dimension of the insertion guide portion. The method for attaching a C-shaped retaining ring according to claim 7, wherein f + g ≦ h is established when g is and the axial depth of the concave portion of the pushing portion is h. 前記軸溝の軸方向の寸法がｉであり、前記Ｃ型止め輪の軸方向の寸法がｊであるとき、ｈ＋ｊ＜ｆ＋ｇ＋ｉが成立する、請求項８に記載のＣ型止め輪の取付方法。 The method for attaching a C-shaped retaining ring according to claim 8, wherein h + j <f + g + i holds when the axial dimension of the shaft groove is i and the axial dimension of the C-shaped retaining ring is j. 請求項３又は４に記載のＣ型止め輪取付治具を用いて軸の軸溝にＣ型止め輪を取り付けるＣ型止め輪の取付方法であって、
前記押込部を前記収容部でガイドしながら前記貫通孔から突出する前記突出部の長さが長くなるように前記押込部を前記連結部に対して前記軸方向の一方側に移動させることで前記Ｃ型止め輪を前記軸溝側に移動させる、Ｃ型止め輪の取付方法。 A method of mounting a C-shaped retaining ring for mounting a C-shaped retaining ring in a shaft groove of a shaft using the C-shaped retaining ring mounting jig according to claim 3 or 4.
While guiding the pushing portion with the accommodating portion, the pushing portion is moved to one side in the axial direction with respect to the connecting portion so that the length of the protruding portion protruding from the through hole becomes long. A method of attaching a C-shaped retaining ring that moves the C-shaped retaining ring to the shaft groove side.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58154074U (en) * 1982-04-05 1983-10-14 マツダ株式会社 C ring fitting tool
JPS6091369U (en) * 1983-11-26 1985-06-22 トヨタ自動車株式会社 Snap spring assembly device
JPS6131670U (en) * 1984-07-31 1986-02-26 日産自動車株式会社 ring attachment device
JPH05337842A (en) * 1992-06-05 1993-12-21 Toyota Autom Loom Works Ltd Snap ring attaching jig
JP2001079781A (en) * 1999-09-07 2001-03-27 Myotoku Ltd Ring installer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106514239A (en) * 2016-12-30 2017-03-22 广西玉柴机器股份有限公司 Assembling auxiliary tool and method for rear force extraction engine hole stop ring

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58154074U (en) * 1982-04-05 1983-10-14 マツダ株式会社 C ring fitting tool
JPS6091369U (en) * 1983-11-26 1985-06-22 トヨタ自動車株式会社 Snap spring assembly device
JPS6131670U (en) * 1984-07-31 1986-02-26 日産自動車株式会社 ring attachment device
JPH05337842A (en) * 1992-06-05 1993-12-21 Toyota Autom Loom Works Ltd Snap ring attaching jig
JP2001079781A (en) * 1999-09-07 2001-03-27 Myotoku Ltd Ring installer

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