JP2006322516A - Shaft member joint structure - Google Patents

Shaft member joint structure Download PDF

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JP2006322516A
JP2006322516A JP2005145556A JP2005145556A JP2006322516A JP 2006322516 A JP2006322516 A JP 2006322516A JP 2005145556 A JP2005145556 A JP 2005145556A JP 2005145556 A JP2005145556 A JP 2005145556A JP 2006322516 A JP2006322516 A JP 2006322516A
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shaft member
snap ring
end portion
groove
convex
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Kenji Otaka
健二 大高
Toshiji Hirai
利治 平井
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Toyota Motor Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To joint two shaft members to each other with high joining strength and release the joined members with no damage. <P>SOLUTION: In the outer peripheral face of a protruded end 20 of the first shaft member 10, a groove 24 is formed into which a first snap ring 42 can be completely fitted. In the inner peripheral face of a recessed end 30 of the second shaft member 12, a groove 38 is formed into which the first snap ring 42 can be half fitted in a position where it is aligned with the groove 24 when the protruded end 20 abuts on a locking portion 34 via a second snap ring 44. In the corner side of the groove 38, a groove 36 is formed ranging from the groove 38, into which the first snap ring 42 can be completely fitted. In the state that the protruded end 20 abuts on the locking portion 34 via the second snap ring 44, the first snap ring 42 is laid between the groove 24 of the protruded end 20 and the groove 38 of the recessed end 30 and joined thereto. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、軸部材の結合構造に関し、詳しくは、少なくとも一方が中空軸として形成された凸状端部を有する第１軸部材と該第１軸部材の凸状端部を嵌挿可能な凹状端部を有する第２軸部材とを、前記凸状端部を前記凹状端部に嵌挿した状態で第１スナップリングと第２スナップリングとを用いて結合する軸部材の結合構造に関する。   The present invention relates to a shaft member coupling structure, and more specifically, a first shaft member having a convex end portion, at least one of which is formed as a hollow shaft, and a concave shape into which the convex end portion of the first shaft member can be fitted. The present invention relates to a shaft member coupling structure in which a second shaft member having an end portion is coupled using a first snap ring and a second snap ring in a state where the convex end portion is fitted into the concave end portion.

従来、この種の軸部材の結合構造としては、外周面に鋸歯状に溝が形成された雄カプラと、内周面の雄カプラの溝と対応する位置に溝が形成された雌カプラと、をスナップリングを用いて結合するものが提案されている（例えば、特許文献１参照）。この結合構造では、雌カプラの溝にスナップリングを嵌め込んだ状態で雄カプラを雌カプラに挿入してスナップリングを雄カプラの溝と雌カプラの溝とに介在させることにより両カプラを結合している。
実開平６−７４７１６号公報 Conventionally, as a coupling structure of this type of shaft member, a male coupler having a serrated groove formed on the outer peripheral surface, a female coupler having a groove formed at a position corresponding to the groove of the male coupler on the inner peripheral surface, Have been proposed (see, for example, Patent Document 1). In this coupling structure, the male coupler is inserted into the female coupler with the snap ring fitted in the female coupler groove, and the two couplers are coupled by interposing the snap ring between the male coupler groove and the female coupler groove. ing.
Japanese Utility Model Publication No. 6-74716

上述の軸部材の結合構造では、両カプラを結合させることはできるものの、一旦結合させた後に分離させることは困難である。これに対して、雄カプラの溝をＶ字状にすれば、両カプラを分離することはできるものの、両カプラに引っ張り力が作用したときには予期しない両カプラの分離が生じる場合がある。   In the shaft member coupling structure described above, both couplers can be coupled, but it is difficult to separate them once they are coupled. On the other hand, if the groove of the male coupler is V-shaped, both couplers can be separated. However, when a tensile force acts on both couplers, unexpected separation of both couplers may occur.

本発明の軸部材の結合構造は、少なくとも一方が中空軸として形成された凸状端部を有する第１軸部材と第１軸部材の凸状端部を嵌挿可能な凹状端部を有する第２軸部材との結合とその解除を容易に行なうことを目的の一つとする。また、本発明の軸部材の結合構造は、高い結合強度を確保することを目的の一つとする。   The shaft member coupling structure of the present invention includes a first shaft member having a convex end portion formed at least one as a hollow shaft and a concave end portion into which the convex end portion of the first shaft member can be fitted. One of the purposes is to easily couple and release the biaxial member. In addition, the shaft member coupling structure of the present invention has an object of securing a high coupling strength.

本発明の軸部材の結合構造は、上述の目的を達成するために以下の手段を採った。   The shaft member coupling structure of the present invention employs the following means in order to achieve the above-described object.

本発明の軸部材の結合構造は、
少なくとも一方が中空軸として形成された凸状端部を有する第１軸部材と該第１軸部材の凸状端部を嵌挿可能な凹状端部を有する第２軸部材とを、前記凸状端部を前記凹状端部に嵌挿した状態で第１スナップリングと第２スナップリングとを用いて結合する軸部材の結合構造であって、
前記第１軸部材の前記凸状端部は、外周面に、端部から第１の長さの位置に前記第１スナップリングを略完全に嵌め込み可能な第１の溝が形成されてなり、
前記第２軸部材の前記凹状端部は、内周面に、端部から前記第１の長さより少なくとも前記第１スナップリングの幅より長い第２の長さの位置に前記凸状端部を係止可能な係止部と、該係止部に前記凸状端部を前記第２スナップリングを介して係止したときに前記第１スナップリングの一部を嵌め込み可能な第２の溝と、該第２の溝の端部から見て奥側に該第２の溝に連続するよう前記第１スナップリングを略完全に嵌め込み可能な第３の溝と、が形成されてなり、
第１スナップリングは、変形していないときには内径が前記第１軸部材の凸状端部の外径以上となり、弾性変形により外径が前記第１軸部材の凸状端部の外径以下に変形可能に形成されてなり、
第２スナップリングは、変形していないときには外径が前記第２軸部材の凹状端部の内径以上となり、弾性変形により外径が前記中空軸の内径と前記係止部の内径とのうちの少なくとも一方より小さく変形可能に形成されてなり、
前記第２スナップリングを介して前記凸状端部が前記係止部により係止している状態で前記第２スナップリングを前記第１の溝と前記第２の溝とに介在させることにより前記第１軸部材と前記第２軸部材とを結合する
ことを要旨とする。 The shaft member coupling structure of the present invention is
A first shaft member having a convex end portion, at least one of which is formed as a hollow shaft, and a second shaft member having a concave end portion into which the convex end portion of the first shaft member can be inserted are formed into the convex shape. It is a coupling structure of shaft members that are coupled using the first snap ring and the second snap ring in a state where the end portion is inserted into the concave end portion,
The convex end portion of the first shaft member is formed with a first groove on the outer peripheral surface in which the first snap ring can be almost completely fitted at a position of a first length from the end portion,
The concave end portion of the second shaft member is formed on the inner peripheral surface at a position having a second length that is at least a second length longer than a width of the first snap ring from the end portion. A locking portion that can be locked, and a second groove into which a part of the first snap ring can be fitted when the convex end portion is locked to the locking portion via the second snap ring; A third groove capable of substantially completely fitting the first snap ring so as to be continuous with the second groove on the back side when viewed from the end of the second groove,
When the first snap ring is not deformed, the inner diameter becomes equal to or larger than the outer diameter of the convex end portion of the first shaft member, and the outer diameter becomes equal to or smaller than the outer diameter of the convex end portion of the first shaft member due to elastic deformation. Formed to be deformable,
When the second snap ring is not deformed, the outer diameter is equal to or greater than the inner diameter of the concave end portion of the second shaft member, and due to elastic deformation, the outer diameter is between the inner diameter of the hollow shaft and the inner diameter of the locking portion. Formed to be deformable smaller than at least one,
By interposing the second snap ring in the first groove and the second groove in a state where the convex end portion is locked by the locking portion via the second snap ring, The gist is to combine the first shaft member and the second shaft member.

この本発明の軸部材の結合構造では、第１軸部材と第２軸部材とを次のように結合する。この結合では、まず、第２スナップリングをその外径が第２軸部材の凹状端部の内径より小さくなるよう強制的に弾性変形させた状態で凹状端部に挿入し、凹状端部に形成された係止部に当接させた状態で強制的な弾性変形を解除する。すると、第２スナップリングは係止部に当接した状態で凹状端部内で係止する。次に、第１軸部材の凸状端部に第１スナップリングを嵌め込み、第１スナップリングが凸状端部に形成された第１の溝に整合する位置で第１スナップリングが略完全に第１の溝に収まるよう第１スナップリングを弾性変形させ、その状態で凸状端部を第２軸部材の凹状端部に挿入する。このとき第１スナップリングは弾性変形を解除しようとして外径を大きくしようとするが、第２軸部材の凹状端部の内周面に当接するために弾性変形を保持した状態となる。第１軸部材の凸状端部の先端が第２スナップリングに当接するまで第１軸部材を挿入すると、係止部に凸状端部を第２スナップリングを介して係止したときに第１スナップリングの一部を嵌め込み可能に凹状端部に形成された第２の溝が第１の溝と整合するため、凹状端部の内周面に当接していた第２スナップリングが第２の溝に嵌り込み、軸部材の結合を完了する。このとき、第２の溝は、第１スナップリングの一部を嵌め込み可能に形成されているから、第１スナップリングは完全に嵌め込まれず、その外周面が第２の溝の底部に当接している状態でその一部が第１の溝に嵌め込まれた状態となる。このように第１スナップリングが第１軸部材の第１の溝と第２軸部材の第２の溝とに嵌め込まれて介在するため、この状態で第１軸部材と第２軸部材とに結合を解除する方向の力（引っ張り方向の力）を作用させても、第１スナップリングを破壊する程度の力が作用するまで軸部材の結合は保持される。即ち、第１スナップリングの破壊強度と同程度の結合強度をもって軸部材を結合することができるのである。もとより、第１軸部材の凸状端部の先端が係止部に第２スナップリングを介して当接されるため、第１軸部材と第２軸部材との結合を圧縮する方向の力を作用させても、第２スナップリングを破壊する程度の力が作用するまで軸部材の結合は保持される。次に、第１軸部材と第２軸部材との結合の解除について説明する。この結合の解除では、まず、第２スナップリングをその径が小さくなるよう弾性変形させて第１軸部材と第２軸部材とのうち中空軸として形成された軸部材の軸内または係止部内に移動させる。このとき、第２スナップリングは、弾性変形によりその外周面が中空軸の内周面または係止部の内周面に当接した状態で係止する。次に、第１軸部材の凸状端部を第２軸部材の凹状端部に更に挿入する。このとき、第１スナップリングは第１の溝にその一部が嵌め込まれているため、凸状端部の挿入と共に凹状端部の奥側にスライドする。凹状端部の第２の溝はその奥側に第１スナップリングを略完全に嵌め込み可能な第３の溝と連続するように形成されているから、第１スナップリングが第３の溝に整合する位置まで凸状端部が挿入されると、第１スナップリングはその弾性変形を解除して第３の溝に略完全に嵌り込む。したがって、第１スナップリングは第１の溝から完全に離脱することになるから、第１軸部材の凸状端部は第１スナップリングによる結合力を失い、凹状端部から引き抜くことができるようになる。こうして第１軸部材の凸状端部を第２軸部材の凹状端部から引き抜くと、第１スナップリングと第２スナップリングとを弾性変形させて取り出し、結合の解除を完了する。   In the shaft member coupling structure of the present invention, the first shaft member and the second shaft member are coupled as follows. In this connection, first, the second snap ring is inserted into the concave end in a state where the outer diameter thereof is forcibly elastically deformed so as to be smaller than the inner diameter of the concave end of the second shaft member, and is formed at the concave end. The forced elastic deformation is released in a state where it is brought into contact with the locking portion. Then, the second snap ring is locked in the concave end portion while being in contact with the locking portion. Next, the first snap ring is fitted into the convex end portion of the first shaft member, and the first snap ring is substantially completely at a position where the first snap ring is aligned with the first groove formed in the convex end portion. The first snap ring is elastically deformed so as to fit in the first groove, and in this state, the convex end is inserted into the concave end of the second shaft member. At this time, the first snap ring tries to release the elastic deformation and tries to increase the outer diameter. However, since the first snap ring comes into contact with the inner peripheral surface of the concave end portion of the second shaft member, the first snap ring is kept in the elastic deformation state. When the first shaft member is inserted until the tip of the convex end portion of the first shaft member abuts on the second snap ring, the first end is locked when the convex end portion is locked to the locking portion via the second snap ring. Since the second groove formed in the concave end portion so that a part of the one snap ring can be fitted is aligned with the first groove, the second snap ring that is in contact with the inner peripheral surface of the concave end portion is the second To complete the coupling of the shaft members. At this time, since the second groove is formed so that a part of the first snap ring can be fitted, the first snap ring is not completely fitted, and the outer peripheral surface is in contact with the bottom of the second groove. In this state, a part thereof is fitted in the first groove. Thus, since the first snap ring is fitted and interposed in the first groove of the first shaft member and the second groove of the second shaft member, the first shaft member and the second shaft member are in this state. Even if a force in the direction of releasing the coupling (force in the pulling direction) is applied, the coupling of the shaft members is maintained until a force that breaks the first snap ring is applied. That is, the shaft member can be coupled with a coupling strength comparable to the breaking strength of the first snap ring. Of course, since the tip of the convex end portion of the first shaft member is brought into contact with the locking portion via the second snap ring, a force in a direction compressing the coupling between the first shaft member and the second shaft member is generated. Even if it makes it act, the coupling | bonding of a shaft member is hold | maintained until the force of the grade which destroys a 2nd snap ring acts. Next, release of the coupling between the first shaft member and the second shaft member will be described. In releasing the coupling, first, the second snap ring is elastically deformed so that the diameter thereof is reduced, and the shaft member formed as a hollow shaft of the first shaft member and the second shaft member is in the shaft or in the locking portion. Move to. At this time, the second snap ring is locked in a state where its outer peripheral surface is in contact with the inner peripheral surface of the hollow shaft or the inner peripheral surface of the locking portion due to elastic deformation. Next, the convex end portion of the first shaft member is further inserted into the concave end portion of the second shaft member. At this time, since a part of the first snap ring is fitted in the first groove, the first snap ring slides to the back side of the concave end portion together with the insertion of the convex end portion. Since the second groove of the concave end portion is formed so as to be continuous with the third groove in which the first snap ring can be almost completely fitted, the first snap ring is aligned with the third groove. When the convex end portion is inserted to the position where the first snap ring is inserted, the first snap ring is released from its elastic deformation and is almost completely fitted into the third groove. Accordingly, since the first snap ring is completely detached from the first groove, the convex end portion of the first shaft member loses the coupling force by the first snap ring and can be pulled out from the concave end portion. become. Thus, when the convex end portion of the first shaft member is pulled out from the concave end portion of the second shaft member, the first snap ring and the second snap ring are elastically deformed and taken out to complete the release of the connection.

本発明の軸部材の結合構造では、上述したように、第１軸部材の凸状端部の外周面に端部から第１の長さの位置に第１スナップリングを略完全に嵌め込み可能な第１の溝を形成すると共に第２軸部材の凹状端部の内周面に端部から第１の長さより少なくとも第１スナップリングの幅より長い第２の長さの位置に凸状端部を係止可能な係止部と係止部に凸状端部を第２スナップリングを介して係止したときに第１スナップリングの一部を嵌め込み可能な第２の溝と第２の溝の端部から見て奥側に第２の溝に連続するよう第１スナップリングを略完全に嵌め込み可能な第３の溝とを形成することにより、第１軸部材と第２軸部材とを二つのスナップリングを用いて高い結合強度で容易に結合することができると共に部材の破損を伴うことなく第１軸部材と第２軸部材との結合を容易に解除することができる。   In the shaft member coupling structure of the present invention, as described above, the first snap ring can be fitted almost completely into the outer peripheral surface of the convex end portion of the first shaft member at the first length from the end portion. A convex end portion that forms a first groove and is located on the inner peripheral surface of the concave end portion of the second shaft member at a position having a second length that is longer than the first length from the end portion by at least a width of the first snap ring. A second groove and a second groove into which a part of the first snap ring can be fitted when the convex end is locked to the locking portion via the second snap ring. The first shaft member and the second shaft member are formed by forming a third groove into which the first snap ring can be almost completely fitted so as to be continuous with the second groove on the back side as viewed from the end of the first shaft member. The two snap rings can be used for easy connection with high bonding strength and the first without damage to the member. The coupling between the member and the second shaft member can be easily released.

こうした本発明の軸部材の結合構造において、前記第１の長さは前記第１スナップリングの幅以上の長さであり、前記第２の長さは前記第１スナップリングの幅の４倍以上の長さであるものとすることもできる。こうすれば、第１の溝が形成された第１軸部材の強度を確保することができると共に第２の溝や第３の溝，係止部が形成された第２軸部材の強度を確保することができる。   In the shaft member coupling structure according to the present invention, the first length is not less than the width of the first snap ring, and the second length is not less than four times the width of the first snap ring. It can also be the length of. If it carries out like this, the intensity | strength of the 1st shaft member in which the 1st groove | channel was formed can be ensured, and the intensity | strength of the 2nd shaft member in which the 2nd groove | channel, the 3rd groove | channel, and the latching | locking part were formed will be ensured. can do.

また、本発明の軸部材の結合構造において、前記第２軸部材の凹状端部は、前記第１スナップリングの外径以上に開口され該開口された端部から内側に向けて前記凸状端部の外径と略同一となるまで内径が滑らかに変化する開口部が形成されてなるものとすることもできる。この場合、第１スナップリングを第１の溝にその一部を嵌め込んだ状態で凸状端部を凹状端部に挿入するだけで、内径が滑らかに変化する開口部の壁面によって第１スナップリングの弾性変形を促進して第１スナップリングを第１の溝に嵌め込んだ状態で凸状端部を凹状端部に挿入することができる。この結果、第１軸部材と第２軸部材との結合を容易に行なうことができる。   Further, in the shaft member coupling structure according to the present invention, the concave end portion of the second shaft member is opened to be larger than the outer diameter of the first snap ring, and the convex end is inward from the opened end portion. It is also possible to form an opening in which the inner diameter smoothly changes until it becomes substantially the same as the outer diameter of the portion. In this case, the first snap ring is inserted by the wall surface of the opening having a smoothly changing inner diameter simply by inserting the convex end into the concave end with a part of the first snap ring fitted in the first groove. The convex end portion can be inserted into the concave end portion in a state where the elastic deformation of the ring is promoted and the first snap ring is fitted in the first groove. As a result, the first shaft member and the second shaft member can be easily coupled.

さらに、本発明の軸部材の結合構造において、前記第１軸部材は中空軸として形成されてなり、前記係止部は内径が前記第１軸部材の前記凸状端部の内径より大きく形成されてなるものとすることもできる。こうすれば、第２スナップリングの弾性変形は係止部の内径程度まででよいから、第１軸部材と第２軸部材との結合を解除するときの第２スナップリングの弾性変形を小さくすることができる。   Further, in the shaft member coupling structure of the present invention, the first shaft member is formed as a hollow shaft, and the locking portion is formed so that an inner diameter thereof is larger than an inner diameter of the convex end portion of the first shaft member. It can also be. By so doing, the elastic deformation of the second snap ring may be up to the inner diameter of the locking portion, so the elastic deformation of the second snap ring when releasing the coupling between the first shaft member and the second shaft member is reduced. be able to.

あるいは、前記第２の溝は、前記凸状端部を前記第２スナップリングを介して前記係止部に係止したときに前記第２軸部材の端部側の側面が前記第１の溝の前記第１軸部材の端部より遠い側の側面と略一致するよう形成されてなるものとすることもできる。こうすれば、第１軸部材と第２軸部材とを結合したときの軸方向のガタを小さくすることができる。   Alternatively, the side surface of the second shaft member on the end portion side of the second groove is the first groove when the convex end portion is locked to the locking portion via the second snap ring. The first shaft member may be formed so as to substantially coincide with the side surface farther from the end of the first shaft member. If it carries out like this, the axial backlash when the 1st shaft member and the 2nd shaft member are combined can be made small.

次に、本発明を実施するための最良の形態を実施例を用いて説明する。   Next, the best mode for carrying out the present invention will be described using examples.

図１は、本発明の一実施例としての軸部材の結合構造に用いられる第１軸部材１０の凸状端部２０と第２軸部材１２の凹状端部３０と二つのスナップリング（第１スナップリング，第２スナップリング）４２，４４との外観を示す分解斜視図であり、図２は、図１のＡ−Ａ断面を示す断面図である。   FIG. 1 shows a convex end 20 of a first shaft member 10, a concave end 30 of a second shaft member 12 and two snap rings (first) used in a shaft member coupling structure as one embodiment of the present invention. (Snap ring, second snap ring) 42, 44 is an exploded perspective view showing the external appearance, FIG. 2 is a cross-sectional view showing the AA cross section of FIG.

第１軸部材１０は、中空軸として形成されており、その端部には図１および図２に示すように第２軸部材１２の凹状端部３０と結合可能な凸状端部２０が形成されている。凸状端部２０は、図示するように、その外周面の先端２２から長さＬ１の位置に第１スナップリング４２を若干のクリアランスをもって嵌め込み可能なように第１スナップリング４２の幅Ｌ２より僅かに長い幅Ｌ３で第１スナップリング４２の径方向の厚みＣ０より僅かに長い深さＤ０の溝２４が形成されている。したがって、溝２４は、第１スナップリング４２を弾性変形させれば、第１スナップリング４２を完全に嵌め込むことができるようになっている。なお、凸状端部２０の先端２２から溝２４までの長さＬ１は、強度を確保するために第１スナップリング４２の幅Ｌ２以上の長さとした。   The first shaft member 10 is formed as a hollow shaft, and a convex end portion 20 that can be coupled to the concave end portion 30 of the second shaft member 12 is formed at the end portion thereof as shown in FIGS. Has been. As shown in the figure, the convex end portion 20 is slightly smaller than the width L2 of the first snap ring 42 so that the first snap ring 42 can be fitted with a slight clearance from the front end 22 of the outer peripheral surface to a position of the length L1. A groove 24 having a long width L3 and a depth D0 slightly longer than the radial thickness C0 of the first snap ring 42 is formed. Therefore, the groove 24 can completely fit the first snap ring 42 if the first snap ring 42 is elastically deformed. The length L1 from the tip 22 of the convex end 20 to the groove 24 is set to be equal to or longer than the width L2 of the first snap ring 42 in order to ensure strength.

第１スナップリング４２および第２スナップリング４４は、共に弾性変形可能な材質（例えば、バネ鋼やステンレス、プラスチックなど）により切れ目を有する環状部材として形成されている。第１スナップリング４２は、その内径Ｋ２が凸状端部２０の外径Ｋ１より僅かに大きくなるよう形成されている。第２スナップリング４４は、その外径Ｋ４が凸状端部２０の外径Ｋ１より僅かに大きくなるように、且つ、その幅が凸状端部２０に形成された溝２４の幅Ｌ３と同一となるよう形成されている。第１スナップリング４２および第２スナップリング４４の切れ目の両端近傍には孔４３，４５が形成されており、スナップリングプライヤなどの工具の先端を広げてこの孔４３，４５に引っかけて狭むることにより第１スナップリング４２および第２スナップリング４４を弾性変形によりその径を小さくすることができるようになっている。   Both the first snap ring 42 and the second snap ring 44 are formed as an annular member having a cut line by an elastically deformable material (for example, spring steel, stainless steel, plastic, etc.). The first snap ring 42 is formed such that its inner diameter K2 is slightly larger than the outer diameter K1 of the convex end portion 20. The second snap ring 44 has an outer diameter K4 that is slightly larger than an outer diameter K1 of the convex end 20 and a width that is the same as the width L3 of the groove 24 formed in the convex end 20. It is formed to become. Holes 43 and 45 are formed in the vicinity of both ends of the cuts of the first snap ring 42 and the second snap ring 44, and the tips of tools such as snap ring pliers are widened and hooked into the holes 43 and 45 so as to be narrowed. Thus, the diameters of the first snap ring 42 and the second snap ring 44 can be reduced by elastic deformation.

第２軸部材１２は、その外径が第１軸部材１０と略同一の中空軸として形成されており、その端部には第１軸部材１０の凸状端部２０と結合可能な凹状端部３０が形成されている。凹状端部３０は、その内径Ｋ５が凸状端部２０の外径Ｋ１より僅かに大きくなるよう形成されており、その内周面には、先端３２から長さＬ４の位置に凸状端部２０の外径Ｋ１より小さい内径Ｋ６のその断面が内側に凸形状の係止部３４が形成されている。また、内周面には、この係止部３４から先端３２側に長さＬ１の位置に第１スナップリング４２の厚みＣ０より僅かに長い深さＤ１で第１スナップリング４２の幅Ｌ２より僅かに長い幅Ｌ３の溝３６が形成されており、この溝３６の先端３２側には溝３６と連続するように溝３６の深さＤ１の略半分の深さＤ２で溝３６の幅と同一の幅Ｌ３の溝３８が形成されている。また、凹状端部３０の先端３２には、第１スナップリング４２の外径Ｋ３より大きい部位から内側に略４５度の角度をもって傾斜する傾斜部４０が形成されており、第１スナップリング４２をこの傾斜部４０に当接させた状態で第１スナップリング４２に凹状端部３０側に押圧力を作用させると、第１スナップリング４２をその外径が小さくなるよう弾性変形させることができるようになっている。ここで、凹状端部３０における先端３２から係止部３４までの長さＬ４は、凸状端部２０の溝２４までの長さＬ１を第１スナップリング４２の幅Ｌ２とすれば、その強度を確保するために少なくとも第１スナップリング４２の幅Ｌ２の４倍以上とすることが望まれる。なお、この凹状端部３０における先端３２から係止部３４までの長さＬ４は、凸状端部２０の長さＬ０より僅かに長くなるように形成されている。   The second shaft member 12 is formed as a hollow shaft whose outer diameter is substantially the same as that of the first shaft member 10, and a concave end that can be coupled to the convex end portion 20 of the first shaft member 10 at the end thereof. A portion 30 is formed. The concave end portion 30 is formed so that its inner diameter K5 is slightly larger than the outer diameter K1 of the convex end portion 20, and the convex end portion is located on the inner peripheral surface at a position of a length L4 from the tip 32. A locking portion 34 having a convex shape on the inner side of the inner diameter K6 smaller than the outer diameter K1 of 20 is formed. Further, the inner peripheral surface has a depth D1 slightly longer than the thickness C0 of the first snap ring 42 at a position of a length L1 from the locking portion 34 toward the tip 32, and is slightly larger than the width L2 of the first snap ring 42. A groove 36 having a long width L3 is formed on the tip 32 side of the groove 36. The groove 36 has a depth D2 that is substantially half the depth D1 of the groove 36 and is the same as the width of the groove 36 so as to be continuous with the groove 36. A groove 38 having a width L3 is formed. In addition, an inclined portion 40 is formed at the tip 32 of the concave end portion 30 so as to incline at an angle of approximately 45 degrees inward from a portion larger than the outer diameter K3 of the first snap ring 42. When a pressing force is applied to the first snap ring 42 toward the concave end portion 30 in a state where the first snap ring 42 is in contact with the inclined portion 40, the first snap ring 42 can be elastically deformed so that its outer diameter is reduced. It has become. Here, the length L4 from the tip 32 to the locking portion 34 in the concave end portion 30 is obtained by setting the length L1 from the groove 24 of the convex end portion 20 to the width L2 of the first snap ring 42. In order to ensure this, it is desirable that the width be at least four times the width L2 of the first snap ring. The length L4 from the tip 32 to the locking portion 34 in the concave end 30 is formed to be slightly longer than the length L0 of the convex end 20.

次に、実施例の第１軸部材１０と第２軸部材１２とを結合する様子について説明する。この結合では、まず、第２スナップリング４４をスナップリングプライヤなどの工具を用いてその径が小さくなるよう弾性変形させて第２軸部材１２の凹状端部３０の内側に形成された係止部４４に当接するよう配置する。第２スナップリング４４を第２軸部材１２の凹状端部３０の係止部３４に当接させた状態で係止させたときの様子を図３に示す。このとき、第２スナップリング４４はその外径Ｋ４が凹状端部３０の内径Ｋ５より僅かに大きくなるよう形成されているから、係止部４４に当接した状態で配置すると、弾性変形が完全に解除されず、係止部４４に当接した状態で係止する。次に、第１スナップリング４２を第１軸部材１０の凸状端部２０の溝２４の位置まで嵌め込み、第１スナップリング４２の一部が溝２４に嵌め込まれるよう外部から力を作用させた状態で第１軸部材１０の凸状端部２０を第２軸部材１２の凹状端部３０に挿入する。すると、第１スナップリング４２は、凹状端部３０の傾斜部４０に当接し、凸状端部２０を凹状端部３０に挿入しようとする力により径が小さくなる方向に弾性変形し、徐々に凸状端部２０の溝２４に嵌り込んでいく。このときの様子を図４に示す。更に凸状端部２０を凹状端部３０に挿入し、凸状端部２４の先端２２が第２スナップリング４２に当接すると共に凸状端部２０の溝２４と凹状端部３０の溝３８とが整合すると、溝２４に弾性変形を伴って嵌り込んでいた第１スナップリング４２がその復元力により溝３８に嵌り込んで結合を完了する。このときの様子を図５に示す。上述したように、溝３８の深さＤ２は第１スナップリング４２の厚みＣ０より浅いため、第１スナップリング４２は、図５に示すように、凹状端部３０の溝３８に嵌り込むと共にその一部が凸状端部２０の溝２４にも嵌り込んだ状態となる。この結合状態で第１軸部材１０と第２軸部材１２とに引っ張り力を作用させると、第１スナップリング４２が溝３８と溝２４とに介在する結果、第１スナップリング４２に剪断力が作用することとなり、第１スナップリング４２の剪断破壊強度を超える力が作用するまで結合の解除は行なわれない。一方、結合状態で第１軸部材１０と第２軸部材１２に圧縮力を作用させると、凸状端部２０の先端２２が第２スナップリング４４を介して凹状端部３０の係止部３４に係止しているから、第２スナップリング４４の圧縮破壊強度を超える力を作用するまで結合の解除は行なわれない。即ち、実施例の軸部材の結合構造は、大きな結合強度をもって第１軸部材１０と第２軸部材１２とを結合することができるものということができる。   Next, how the first shaft member 10 and the second shaft member 12 of the embodiment are coupled will be described. In this connection, first, the second snap ring 44 is elastically deformed so as to reduce its diameter by using a tool such as a snap ring plier, and is formed on the inner side of the concave end portion 30 of the second shaft member 12. 44 to be in contact with 44. FIG. 3 shows a state where the second snap ring 44 is locked in a state where the second snap ring 44 is in contact with the locking portion 34 of the concave end portion 30 of the second shaft member 12. At this time, since the outer diameter K4 of the second snap ring 44 is formed to be slightly larger than the inner diameter K5 of the concave end portion 30, if the second snap ring 44 is disposed in contact with the locking portion 44, the elastic deformation is completely achieved. It is not released, but is locked in a state of being in contact with the locking portion 44. Next, the first snap ring 42 was fitted to the position of the groove 24 of the convex end portion 20 of the first shaft member 10, and an external force was applied so that a part of the first snap ring 42 was fitted into the groove 24. In this state, the convex end portion 20 of the first shaft member 10 is inserted into the concave end portion 30 of the second shaft member 12. Then, the first snap ring 42 comes into contact with the inclined portion 40 of the concave end portion 30 and is elastically deformed in a direction in which the diameter is reduced by a force for inserting the convex end portion 20 into the concave end portion 30, and gradually. It fits into the groove 24 of the convex end 20. The state at this time is shown in FIG. Further, the convex end 20 is inserted into the concave end 30, the tip 22 of the convex end 24 abuts against the second snap ring 42, and the groove 24 of the convex end 20 and the groove 38 of the concave end 30 are Are aligned, the first snap ring 42 fitted into the groove 24 with elastic deformation is fitted into the groove 38 by the restoring force to complete the coupling. The state at this time is shown in FIG. As described above, since the depth D2 of the groove 38 is shallower than the thickness C0 of the first snap ring 42, the first snap ring 42 is fitted into the groove 38 of the concave end portion 30 as shown in FIG. A part is also fitted into the groove 24 of the convex end 20. When a tensile force is applied to the first shaft member 10 and the second shaft member 12 in this coupled state, the first snap ring 42 is interposed between the groove 38 and the groove 24, so that a shear force is applied to the first snap ring 42. In other words, the connection is not released until a force exceeding the shear fracture strength of the first snap ring 42 is applied. On the other hand, when a compressive force is applied to the first shaft member 10 and the second shaft member 12 in the coupled state, the tip 22 of the convex end portion 20 is engaged with the locking portion 34 of the concave end portion 30 via the second snap ring 44. Therefore, the connection is not released until a force exceeding the compressive fracture strength of the second snap ring 44 is applied. That is, it can be said that the shaft member coupling structure of the embodiment can couple the first shaft member 10 and the second shaft member 12 with a large coupling strength.

次に、第１軸部材１０と第２軸部材１２との結合を解除する様子について説明する。この結合の解除では、まず、スナップリングプライヤなどの工具を用いて第２スナップリング４４をその径が小さくなるよう弾性変形させて第２軸部材１２の凹状端部３０の内側に形成された係止部３４内に移動させる。このときの様子を図６に示す。続いて、第１軸部材１０の凸状端部２０をその先端２２が凹状端部３０の係止部３４に当接するまで挿入する。このとき、第１スナップリング４２は、その一部が凸状端部２０の溝２４に嵌り込んでいるため、凸状端部２０の挿入に伴って凹状端部３０の奥側の溝３６側にスライドし、凸状端部２０の溝２４が凹状端部３０の溝３６に整合したときにその復元力により溝３６に嵌り込む。上述したように、溝３６は第１スナップリング４２の厚みＣ０より深い深さＤ１となるよう形成されているから、第１スナップリング４２は溝３６に完全に嵌り込むことになる。このときの様子を図７に示す。図示するように、この状態では、凸状端部２０は第１スナップリング４２による係止が解除されるから、凸状端部２０を凹状端部３０から引き抜くことができる。この状態から、凸状端部２０を凹上端部３０から引き抜き、第１スナップリング４２と第２スナップリング４４とを凹状端部３０から取り出して、第１軸部材１０と第２軸部材１２との結合の解除を完了する。このときの様子を図８に示す。このように、実施例の軸部材の結合構造では、部材に何らの損傷を与えることなく、その結合を解除することができる。   Next, a state where the coupling between the first shaft member 10 and the second shaft member 12 is released will be described. In releasing the coupling, first, the second snap ring 44 is elastically deformed to reduce its diameter by using a tool such as a snap ring plier, and the engagement formed on the inner side of the concave end portion 30 of the second shaft member 12. Move into the stop 34. The state at this time is shown in FIG. Subsequently, the convex end portion 20 of the first shaft member 10 is inserted until the tip 22 comes into contact with the locking portion 34 of the concave end portion 30. At this time, since a part of the first snap ring 42 is fitted into the groove 24 of the convex end portion 20, the groove 36 on the back side of the concave end portion 30 is inserted with the insertion of the convex end portion 20. When the groove 24 of the convex end portion 20 is aligned with the groove 36 of the concave end portion 30, it is fitted into the groove 36 by its restoring force. As described above, since the groove 36 is formed to have a depth D1 deeper than the thickness C0 of the first snap ring 42, the first snap ring 42 is completely fitted into the groove 36. The state at this time is shown in FIG. As shown in the drawing, in this state, the convex end portion 20 is released from the locking by the first snap ring 42, so that the convex end portion 20 can be pulled out from the concave end portion 30. From this state, the convex end portion 20 is pulled out from the concave upper end portion 30 and the first snap ring 42 and the second snap ring 44 are taken out from the concave end portion 30, and the first shaft member 10 and the second shaft member 12 are Complete the release of the bond. The state at this time is shown in FIG. Thus, in the coupling structure of the shaft member of the embodiment, the coupling can be released without causing any damage to the member.

以上説明した実施例の軸部材の結合構造によれば、第１軸部材１０と第２軸部材１２とを第１スナップリング４２と第２スナップリング４４とを用いて高い結合強度で容易に結合することができると共に部材の破損を伴うことなく第１軸部材１０と第２軸部材１２との結合を容易に解除することができる。即ち、第２スナップリング４４を第２軸部材１２の凹状端部３０の係止部３４に当接させた状態で係止させ、第１スナップリング４２を第１軸部材１０の凸状端部２０の溝２４と凹状端部３０の溝３８とに介在させることにより、大きな結合強度をもって第１軸部材１０と第２軸部材１２とを結合することができる。そして、第２スナップリング４４を係止部３４内に移動させ、凸状端部２０をその先端２２が係止部３４に当接するまで挿入して第１スナップリング４２を凹状端部３０の溝３６に移動させることにより第１スナップリング４２による係止を解除して、第１軸部材１０と第２軸部材１２との結合を解除することができる。   According to the shaft member coupling structure of the embodiment described above, the first shaft member 10 and the second shaft member 12 are easily coupled with high coupling strength using the first snap ring 42 and the second snap ring 44. In addition, the first shaft member 10 and the second shaft member 12 can be easily disconnected from each other without being damaged. That is, the second snap ring 44 is locked in a state where the second snap ring 44 is in contact with the locking portion 34 of the concave end 30 of the second shaft member 12, and the first snap ring 42 is locked to the convex end of the first shaft member 10. The first shaft member 10 and the second shaft member 12 can be coupled with high coupling strength by being interposed in the twenty-four grooves 24 and the grooves 38 of the concave end portion 30. Then, the second snap ring 44 is moved into the locking portion 34, and the convex end portion 20 is inserted until the tip 22 abuts the locking portion 34, and the first snap ring 42 is inserted into the groove of the concave end portion 30. By moving to 36, the locking by the first snap ring 42 can be released, and the coupling between the first shaft member 10 and the second shaft member 12 can be released.

実施例の軸部材の結合構造では、第１軸部材１０と第２軸部材１２とが共に中空軸として形成されるものとしたが、第１軸部材１０と第２軸部材１２とのうち少なくとも一方が中空軸として形成されるものであればよい。   In the shaft member coupling structure of the embodiment, the first shaft member 10 and the second shaft member 12 are both formed as hollow shafts, but at least of the first shaft member 10 and the second shaft member 12. It is sufficient if one of them is formed as a hollow shaft.

実施例の軸部材の結合構造では、第１軸部材１０と第２軸部材１２との結合を解除する際、第２スナップリング４４を第２軸部材１２の凹状端部３０の係止部３４内に移動させるものとしたが、中空軸として形成された第１軸部材１０の凸状端部２０の軸内に移動させるものとしてもよい。   In the shaft member coupling structure of the embodiment, when the coupling between the first shaft member 10 and the second shaft member 12 is released, the second snap ring 44 is engaged with the locking portion 34 of the concave end 30 of the second shaft member 12. However, it may be moved into the shaft of the convex end 20 of the first shaft member 10 formed as a hollow shaft.

実施例の軸部材の結合構造では、第１軸部材１０の凸状端部２０の先端２２から溝２４までの長さＬ１を第１スナップリング４２の幅Ｌ２以上の長さとするものとしたが、幅Ｌ２未満の長さとしてもよい。また、実施例の軸部材の結合構造では、第２軸部材１２の先端３２から係止部３４までの長さＬ４を第１スナップリング４２の幅Ｌ２の４倍以上の長さとするものとしたが、幅Ｌ２の４倍未満の長さとしてもよい。   In the shaft member coupling structure of the embodiment, the length L1 from the tip 22 of the convex end portion 20 of the first shaft member 10 to the groove 24 is set to be equal to or longer than the width L2 of the first snap ring 42. The length may be less than the width L2. Further, in the shaft member coupling structure of the embodiment, the length L4 from the tip 32 of the second shaft member 12 to the locking portion 34 is set to be four times or more the width L2 of the first snap ring 42. However, the length may be less than four times the width L2.

実施例の軸部材の結合構造では、第１軸部材１０の凸状端部２０の先端２２から溝２４までの長さと第２軸部材１２の凹状端部３０の係止部３４から溝３６までの長さとを同一とするものとしたが、凹状端部３０の係止部３４から溝３６までの長さの方が凸状端部２０の先端３２から溝２４までの長さより長いものとしてもよい。ただし、この場合、第２スナップリング４４の幅を凹状端部３０の係止部３４から溝３８までの長さと凸状端部２０の先端２２から溝２４までの長さとの差にする必要がある。   In the coupling structure of the shaft member of the embodiment, the length from the tip 22 of the convex end portion 20 of the first shaft member 10 to the groove 24 and the locking portion 34 of the concave end portion 30 of the second shaft member 12 to the groove 36. The length from the engaging portion 34 of the concave end 30 to the groove 36 is longer than the length from the tip 32 of the convex end 20 to the groove 24. Good. However, in this case, the width of the second snap ring 44 needs to be a difference between the length from the locking portion 34 of the concave end portion 30 to the groove 38 and the length from the tip 22 of the convex end portion 20 to the groove 24. is there.

実施例の軸部材の結合構造では、第２軸部材１２の凹状端部３０の先端３２に傾斜部４０を形成したが、こうした傾斜部４０を形成しないものとしてもよい。この場合には、第１軸部材１０と第２軸部材１２とを結合する際、第１スナップリング４２が溝２４に完全に収まるよう外部から力を作用させた状態で第１軸部材１０の凸状端部２０を第２軸部材１２の凹状端部３０に挿入すればよい。   In the coupling structure of the shaft member of the embodiment, the inclined portion 40 is formed at the tip 32 of the concave end portion 30 of the second shaft member 12. However, the inclined portion 40 may not be formed. In this case, when the first shaft member 10 and the second shaft member 12 are coupled, the force of the first shaft member 10 is applied with an external force applied so that the first snap ring 42 is completely fitted in the groove 24. The convex end 20 may be inserted into the concave end 30 of the second shaft member 12.

実施例の軸部材の結合構造では、第１軸部材１０の凸状端部２０の溝２４と第２軸部材１２の凹状端部３０の溝３６，３８と第２スナップリング４４とをいずれも幅Ｌ３とすることにより凸状端部２０を凹状端部３０の係止部３４に第２スナップリング４４を介して係止したときに溝３８の先端３２側の側面と溝２４の奥側の側面とが一致するものとしたが、溝３８と溝２４との幅を若干異なるものとするなど、溝３８の先端３２側の側面と溝２４の奥側の側面とが一致しないものとしてもよい。   In the coupling structure of the shaft member of the embodiment, the groove 24 of the convex end portion 20 of the first shaft member 10, the grooves 36 and 38 of the concave end portion 30 of the second shaft member 12, and the second snap ring 44 are all included. With the width L3, when the convex end 20 is locked to the locking portion 34 of the concave end 30 via the second snap ring 44, the side surface on the tip 32 side of the groove 38 and the back side of the groove 24 are provided. Although the side faces coincide with each other, the side face on the tip 32 side of the groove 38 and the back side face of the groove 24 may not coincide with each other, for example, the widths of the grooves 38 and 24 may be slightly different. .

以上、本発明を実施するための最良の形態について実施例を用いて説明したが、本発明はこうした実施例に何等限定されるものではなく、本発明の要旨を逸脱しない範囲内において、種々なる形態で実施し得ることは勿論である。   The best mode for carrying out the present invention has been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the gist of the present invention. Of course, it can be implemented in the form.

本発明は、軸部材の製造産業に利用可能である。   The present invention can be used in the shaft member manufacturing industry.

本発明の一実施例としての軸部材の結合構造に用いられる第１軸部材１０の凸状端部２０と第２軸部材１２の凹状端部３０と第１スナップリング４２と第２スナップリング４４との外観を示す分解斜視図である。The convex end 20 of the first shaft member 10, the concave end 30 of the second shaft member 12, the first snap ring 42, and the second snap ring 44 used in the shaft member coupling structure as one embodiment of the present invention. It is a disassembled perspective view which shows the external appearance. 図１のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 第２スナップリング４４を第２軸部材１２の凹状端部３０の係止部３４に当接させた状態で係止させたときの様子を示す説明図である。It is explanatory drawing which shows a mode when the 2nd snap ring 44 is made to latch in the state contact | abutted to the latching | locking part 34 of the concave-shaped edge part 30 of the 2nd shaft member 12. FIG. 第１軸部材１０の凸状端部２０を第２軸部材１２の凹状端部３０に挿入するときの様子を示す説明図である。It is explanatory drawing which shows a mode when the convex-shaped edge part 20 of the 1st shaft member 10 is inserted in the concave-shaped edge part 30 of the 2nd shaft member 12. FIG. 第１軸部材１０と第２軸部材１２との結合を完了したときの様子を示す説明図である。It is explanatory drawing which shows a mode when the coupling | bonding of the 1st shaft member 10 and the 2nd shaft member 12 is completed. 第２スナップリング４４を第２軸部材１２の凹状端部３０の係止部３４内に係止させたときの様子を示す説明図である。It is explanatory drawing which shows a mode when the 2nd snap ring 44 is made to latch in the latching | locking part 34 of the concave edge part 30 of the 2nd shaft member 12. FIG. 第１軸部材１０の凸状端部２０をその先端２２が第２軸部材１２の凹状端部３０の係止部３４に当接するまで挿入したときの様子を示す説明図である。It is explanatory drawing which shows a mode when the convex edge part 20 of the 1st shaft member 10 is inserted until the front-end | tip 22 contacts the latching | locking part 34 of the concave edge part 30 of the 2nd shaft member 12. FIG. 第１軸部材１０の凸状端部２０と第２軸部材１２の凹状端部３０との結合の解除を完了したときの様子を示す説明図である。It is explanatory drawing which shows a mode when cancellation | release of the coupling | bonding of the convex edge part 20 of the 1st shaft member 10 and the concave edge part 30 of the 2nd shaft member 12 is completed.

符号の説明Explanation of symbols

１０ 第１軸部材、１２ 第２軸部材、２０ 凸状端部、３０ 凹状端部、２２，３２ 先端、２４，３６，３８ 溝、３４ 係止部、４０ 傾斜、４２ 第１スナップリング、４４ 第２スナップリング、４３，４５ 孔。   10 First shaft member, 12 Second shaft member, 20 Convex end, 30 Concave end, 22, 32 Tip, 24, 36, 38 Groove, 34 Locking portion, 40 Inclination, 42 First snap ring, 44 Second snap ring, 43, 45 holes.

Claims (5)

少なくとも一方が中空軸として形成された凸状端部を有する第１軸部材と該第１軸部材の凸状端部を嵌挿可能な凹状端部を有する第２軸部材とを、前記凸状端部を前記凹状端部に嵌挿した状態で第１スナップリングと第２スナップリングとを用いて結合する軸部材の結合構造であって、
前記第１軸部材の前記凸状端部は、外周面に、端部から第１の長さの位置に前記第１スナップリングを略完全に嵌め込み可能な第１の溝が形成されてなり、
前記第２軸部材の前記凹状端部は、内周面に、端部から前記第１の長さより少なくとも前記第１スナップリングの幅より長い第２の長さの位置に前記凸状端部を係止可能な係止部と、該係止部に前記凸状端部を前記第２スナップリングを介して係止したときに前記第１スナップリングの一部を嵌め込み可能な第２の溝と、該第２の溝の端部から見て奥側に該第２の溝に連続するよう前記第１スナップリングを略完全に嵌め込み可能な第３の溝と、が形成されてなり、
第１スナップリングは、変形していないときには内径が前記第１軸部材の凸状端部の外径以上となり、弾性変形により外径が前記第１軸部材の凸状端部の外径以下に変形可能に形成されてなり、
第２スナップリングは、変形していないときには外径が前記第２軸部材の凹状端部の内径以上となり、弾性変形により外径が前記中空軸の内径と前記係止部の内径とのうちの少なくとも一方より小さく変形可能に形成されてなり、
前記第２スナップリングを介して前記凸状端部が前記係止部により係止している状態で前記第２スナップリングを前記第１の溝と前記第２の溝とに介在させることにより前記第１軸部材と前記第２軸部材とを結合する
軸部材の結合構造。 A first shaft member having a convex end portion, at least one of which is formed as a hollow shaft, and a second shaft member having a concave end portion into which the convex end portion of the first shaft member can be inserted are formed into the convex shape. It is a coupling structure of shaft members that are coupled using the first snap ring and the second snap ring in a state where the end portion is inserted into the concave end portion,
The convex end portion of the first shaft member is formed with a first groove on the outer peripheral surface in which the first snap ring can be almost completely fitted at a position of a first length from the end portion,
The concave end portion of the second shaft member is formed on the inner peripheral surface at a position having a second length that is at least a second length longer than a width of the first snap ring from the end portion. A locking portion that can be locked, and a second groove into which a part of the first snap ring can be fitted when the convex end portion is locked to the locking portion via the second snap ring; A third groove capable of substantially completely fitting the first snap ring so as to be continuous with the second groove on the back side when viewed from the end of the second groove,
When the first snap ring is not deformed, the inner diameter becomes equal to or larger than the outer diameter of the convex end portion of the first shaft member, and the outer diameter becomes equal to or smaller than the outer diameter of the convex end portion of the first shaft member due to elastic deformation. Formed to be deformable,
When the second snap ring is not deformed, the outer diameter is equal to or greater than the inner diameter of the concave end portion of the second shaft member, and due to elastic deformation, the outer diameter is between the inner diameter of the hollow shaft and the inner diameter of the locking portion. Formed to be deformable smaller than at least one,
By interposing the second snap ring in the first groove and the second groove in a state where the convex end portion is locked by the locking portion via the second snap ring, A shaft member coupling structure for coupling the first shaft member and the second shaft member. 請求項１記載の軸部材の結合構造であって、
前記第１の長さは、前記第１スナップリングの幅以上の長さであり、
前記第２の長さは、前記第１スナップリングの幅の４倍以上の長さである、
軸部材の結合構造。 The shaft member coupling structure according to claim 1,
The first length is not less than the width of the first snap ring,
The second length is at least four times the width of the first snap ring.
A coupling structure of shaft members. 前記第２軸部材の凹状端部は、前記第１スナップリングの外径以上に開口され、該開口された端部から内側に向けて前記凸状端部の外径と略同一となるまで内径が滑らかに変化する開口部が形成されてなる請求項１または２記載の軸部材の結合構造。   The concave end portion of the second shaft member is opened beyond the outer diameter of the first snap ring, and the inner diameter extends from the opened end portion to the inner side until it becomes substantially the same as the outer diameter of the convex end portion. The shaft member coupling structure according to claim 1, wherein an opening in which the angle changes smoothly is formed. 請求項１ないし３いずれか記載の軸部材の結合構造であって、
前記第１軸部材は、中空軸として形成されてなり、
前記係止部は、内径が前記第１軸部材の前記凸状端部の内径より大きく形成されてなる、
軸部材の結合構造。 The shaft member coupling structure according to any one of claims 1 to 3,
The first shaft member is formed as a hollow shaft,
The locking portion is formed such that an inner diameter is larger than an inner diameter of the convex end portion of the first shaft member.
A coupling structure of shaft members. 前記第２の溝は、前記凸状端部を前記第２スナップリングを介して前記係止部に係止したときに前記第２軸部材の端部側の側面が前記第１の溝の前記第１軸部材の端部より遠い側の側面と略一致するよう形成されてなる請求項１ないし４いずれか記載の軸部材の結合構造。
The second groove has a side surface on the end portion side of the second shaft member when the convex end portion is locked to the locking portion via the second snap ring. The shaft member coupling structure according to any one of claims 1 to 4, wherein the shaft member coupling structure is formed so as to substantially coincide with a side surface farther from an end of the first shaft member.
JP2005145556A 2005-05-18 2005-05-18 Shaft member joint structure Pending JP2006322516A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11315720A (en) * 1998-04-30 1999-11-16 Nippon Thermostat Kk Thermoelement
JP2010156400A (en) * 2008-12-26 2010-07-15 Sumitomo Heavy Ind Ltd Fixing structure of decelerator and driven shaft in axial direction
JP2013160243A (en) * 2012-02-01 2013-08-19 Sumitomo Heavy Ind Ltd Gear device including hollow part
JP2014126077A (en) * 2012-12-25 2014-07-07 Aisin Seiki Co Ltd Vehicle drive unit
JP2015148184A (en) * 2014-02-06 2015-08-20 マツダ株式会社 Piston structure of engine
US9556821B2 (en) 2013-09-18 2017-01-31 Mazda Motor Corporation Piston structure for engine
JP2019525089A (en) * 2016-08-09 2019-09-05 デーナ、オータモウティヴ、システィムズ、グループ、エルエルシー Propeller shaft slip member with collision collapse assembly
JP7417764B2 (en) 2020-10-19 2024-01-18 エルジー エナジー ソリューション リミテッド Battery racks, power storage devices, and power generation systems

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11315720A (en) * 1998-04-30 1999-11-16 Nippon Thermostat Kk Thermoelement
JP2010156400A (en) * 2008-12-26 2010-07-15 Sumitomo Heavy Ind Ltd Fixing structure of decelerator and driven shaft in axial direction
JP2013160243A (en) * 2012-02-01 2013-08-19 Sumitomo Heavy Ind Ltd Gear device including hollow part
JP2014126077A (en) * 2012-12-25 2014-07-07 Aisin Seiki Co Ltd Vehicle drive unit
US9476496B2 (en) 2012-12-25 2016-10-25 Aisin Seiki Kabushiki Kaisha Driving apparatus for vehicle
US9556821B2 (en) 2013-09-18 2017-01-31 Mazda Motor Corporation Piston structure for engine
JP2015148184A (en) * 2014-02-06 2015-08-20 マツダ株式会社 Piston structure of engine
JP2019525089A (en) * 2016-08-09 2019-09-05 デーナ、オータモウティヴ、システィムズ、グループ、エルエルシー Propeller shaft slip member with collision collapse assembly
US11156253B2 (en) 2016-08-09 2021-10-26 Dana Automotive Systems Group, Llc Propeller shaft slip member with crash collapse assembly
JP7417764B2 (en) 2020-10-19 2024-01-18 エルジー エナジー ソリューション リミテッド Battery racks, power storage devices, and power generation systems

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