JP2003090353A - Universal coupling and propeller shaft using the same - Google Patents
Universal coupling and propeller shaft using the sameInfo
- Publication number
- JP2003090353A JP2003090353A JP2001282689A JP2001282689A JP2003090353A JP 2003090353 A JP2003090353 A JP 2003090353A JP 2001282689 A JP2001282689 A JP 2001282689A JP 2001282689 A JP2001282689 A JP 2001282689A JP 2003090353 A JP2003090353 A JP 2003090353A
- Authority
- JP
- Japan
- Prior art keywords
- ring member
- outer ring
- universal joint
- boot
- reinforcing member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Motor Power Transmission Devices (AREA)
- Diaphragms And Bellows (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、プロペラシャフト
やドライブシャフト等に用いられる自在継手およびそれ
を用いたプロペラシャフトに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a universal joint used for propeller shafts, drive shafts and the like, and a propeller shaft using the same.
【０００２】[0002]
【従来の技術】一般的に自在継手には、これらを構成す
る外輪部材、内輪部材およびこれらを連繋する転動体を
雨水や泥水などから保護したり、自在継手の摺動性を維
持するグリースを封止したりするために、軸と外輪との
間にはブーツが取り付けられている。そして、ブーツ
は、一端がブーツアダプタを介して自在継手の外輪に加
締められて固定されるともに、他端側は軸に対し、取り
付けバンド等により固定されている。2. Description of the Related Art Generally, a universal joint is provided with a grease that protects the outer ring member, the inner ring member and the rolling elements that connect them from rainwater or muddy water, and that maintains the slidability of the universal joint. Boots are attached between the shaft and the outer ring for sealing. The boot has one end fixed to the outer ring of the universal joint by swaging through the boot adapter, and the other end fixed to the shaft by a mounting band or the like.
【０００３】また、前記ブーツアダプタは、自在継手が
高回転した時や、ブーツ内部の空気の発熱によりブーツ
内の空気が膨張した時に、ブーツの膨出を防止する構造
となっている。例えば、この類似技術として、実開平７
−２４６８３号公報記載のものがある。The boot adapter has a structure that prevents the boot from bulging when the universal joint rotates at high speed or when the air inside the boot expands due to the heat generated by the air inside the boot. For example, as a technique similar to this,
There is one disclosed in Japanese Patent No. 24683.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来技
術にあっては、ブーツは、外輪部材の外径よりも径の小
さい位置でブーツアダプタを介して自在継手の外輪部材
に取り付けられるために、ブーツの可撓範囲がちいさく
なる。そうすると、例えば、外輪部材に対する内輪部材
の軸方向のストローク量を多く取れないという問題があ
る。However, in the prior art, the boot is attached to the outer ring member of the universal joint via the boot adapter at a position where the diameter is smaller than the outer diameter of the outer ring member. The flexible range of is small. Then, for example, there is a problem that a large stroke amount of the inner ring member with respect to the outer ring member cannot be obtained.
【０００５】[0005]
【課題を解決するための手段】上述の目的を達成するた
め本発明は、入力軸と出力軸とを連繋する継手であっ
て、前記入力軸または出力軸の何れか一方の軸に取り付
けられる外輪部材と、この外輪部材の内側に配置され、
入力軸または出力軸の何れか他方の軸に取り付けられる
内輪部材と、外輪部材の内側に配置され、前記外輪部材
と内輪部材とを連繋する転動体と、継手内部を封止する
可撓性ブーツを有する自在継手において、前記ブーツ
は、一端部を前記外輪部材の外周面に固定し、他端を前
記内輪部材側の部材に固定し、一端部が前記外輪部材ま
たは内輪部材側の部材に固定され、前記ブーツの外周に
当接可能な補強部材を設けたことを特徴とする手段とし
た。なお、ブーツの他端を固定する対象であり、かつ、
補強部材を固定する対象である内輪部材側の部材とは、
内輪部材それ自体、あるいは内輪部材が固定された入力
軸または出力軸を指す。In order to achieve the above object, the present invention is a joint for connecting an input shaft and an output shaft, the outer ring being attached to either one of the input shaft and the output shaft. A member and is arranged inside this outer ring member,
An inner ring member attached to the other one of the input shaft and the output shaft, a rolling element that is arranged inside the outer ring member and connects the outer ring member and the inner ring member, and a flexible boot that seals the inside of the joint. In the universal joint, the boot has one end fixed to an outer peripheral surface of the outer ring member, the other end fixed to a member on the inner ring member side, and one end fixed to the outer ring member or a member on the inner ring member side. In addition, a reinforcing member that can come into contact with the outer circumference of the boot is provided. The other end of the boot is fixed, and
With the member on the inner ring member side that is the target of fixing the reinforcing member,
The inner ring member itself or the input shaft or the output shaft to which the inner ring member is fixed.
【０００６】また、請求項２に記載の発明は、請求項１
に記載の自在継手において、前記ブーツの一端は自在継
手の外輪部材の外周面と、補強部材の内周面との間に狭
持したことを特徴とする。The invention described in claim 2 is the same as claim 1
In the universal joint described in (1), one end of the boot is sandwiched between the outer peripheral surface of the outer ring member of the universal joint and the inner peripheral surface of the reinforcing member.
【０００７】また、請求項３に記載の発明は、請求項１
または２に記載の自在継手において、前記外輪部材の外
周には取付溝を形成し、前記補強部材の一端部には該取
付溝に係合する係合部を形成するとともに、係合部は外
輪部材の外周面に沿って弾性変形可能であることを特徴
とする。また、請求項４に記載の発明は、請求項３に記
載の自在継手において、前記補強部材の係合部には係合
部を弾性的に拡径変形可能な所定数のスリットが形成さ
れていることを特徴とする。The invention described in claim 3 is the same as claim 1
Alternatively, in the universal joint according to the second aspect, a mounting groove is formed on the outer periphery of the outer ring member, an engaging portion that engages with the mounting groove is formed at one end of the reinforcing member, and the engaging portion is the outer ring. It is characterized in that it is elastically deformable along the outer peripheral surface of the member. According to a fourth aspect of the invention, in the universal joint according to the third aspect, a predetermined number of slits capable of elastically expanding and deforming the engaging portion are formed in the engaging portion of the reinforcing member. It is characterized by being
【０００８】また、請求項５に記載の発明は、請求項１
ないし４に記載の自在継手において、前記補強部材は軟
質材料で形成されることを特徴とする。The invention described in claim 5 is the same as claim 1.
In the universal joints described in 4 to 4, the reinforcing member is made of a soft material.
【０００９】また、請求項６に記載の発明は、車両の駆
動源側に接続された入力軸と、終減速機側に接続された
出力軸と、両軸の間に設けられた自在継手とを備えたプ
ロペラシャフトにおいて、前記自在継手として請求項１
〜５のいずれかに記載された自在継手を設けたことを特
徴とする手段とした。The invention according to claim 6 is characterized in that an input shaft connected to the drive source side of the vehicle, an output shaft connected to the final reduction gear side, and a universal joint provided between both shafts. A propeller shaft comprising: the universal joint as a universal joint.
It is a means characterized in that the universal joint described in any one of 5 to 5 is provided.
【００１０】[0010]
【発明の作用および効果】請求項１に記載の発明にあっ
ては、ブーツの一端を自在継手の外輪部材の外周面に固
定し、他端を自在継手の内輪部材に固定し、これとは別
体に該ブーツの外周に当接可能な補強部材を設けたた
め、ブーツの可撓範囲を大きくできるとともに、補強部
材によって、ブーツの膨出を確実に防げる。According to the invention of claim 1, one end of the boot is fixed to the outer peripheral surface of the outer ring member of the universal joint, and the other end is fixed to the inner ring member of the universal joint. Since the reinforcing member that can come into contact with the outer circumference of the boot is separately provided, the flexible range of the boot can be increased, and the bulging of the boot can be reliably prevented by the reinforcing member.
【００１１】請求項２に記載の発明にあっては、ブーツ
の一端を自在継手の外輪部材の外周面と、補強部材の内
周面との間に狭持したため、補強部材がブーツを外輪部
材に固定する手段を兼ね、格別なブーツ固定手段を必要
としないため、コスト低減できる。According to the second aspect of the present invention, since one end of the boot is sandwiched between the outer peripheral surface of the outer ring member of the universal joint and the inner peripheral surface of the reinforcing member, the reinforcing member holds the boot in the outer ring member. Since it does not require a special boot fixing means as well as a means for fixing the same, the cost can be reduced.
【００１２】請求項３に記載の発明にあっては、取付溝
と、それに係合する係合部を形成するとともに、係合部
は外輪部材の外周面に沿って弾性変形可能にしたため、
補強部材と外輪部材との固定を容易にできる。According to the third aspect of the present invention, the mounting groove and the engaging portion that engages with the mounting groove are formed, and the engaging portion is elastically deformable along the outer peripheral surface of the outer ring member.
It is possible to easily fix the reinforcing member and the outer ring member.
【００１３】請求項４に記載の発明にあっては、補強部
材の係合部には係合部を弾性的に拡径変形させる所定数
のスリットが形成されているめ、係合部の拡径変形が容
易になり、補強部材の外輪部材への装着が更に容易にな
る。According to another aspect of the present invention, the engaging portion of the reinforcing member is formed with a predetermined number of slits for elastically expanding and deforming the engaging portion. The radial deformation is facilitated, and the reinforcement member is more easily attached to the outer ring member.
【００１４】請求項５に記載の発明にあっては、補強部
材を軟質材料で形成したため、補強部材自身の弾性変形
が容易になり、補強部材の外輪部材への装着が更に容易
になる。According to the invention of claim 5, since the reinforcing member is made of a soft material, the elastic deformation of the reinforcing member itself is facilitated, and the mounting of the reinforcing member on the outer ring member is further facilitated.
【００１５】請求項６に記載の発明にあっては、プロペ
ラシャフトの自在継手として、請求項１ないし５に記載
の自在継手を用いているため、自在継手として上述した
請求項１〜５に記載の発明の効果が得られるのに加え
て、車両の衝突時などのようにプロペラシャフトに対し
て軸方向に衝撃エネルギが作用したときに、以下のよう
な作用効果が得られる。In the invention according to claim 6, since the universal joint according to any one of claims 1 to 5 is used as the universal joint of the propeller shaft, the above-mentioned universal joints according to any one of claims 1 to 5 are used. In addition to the effect of the invention described above, when the impact energy acts on the propeller shaft in the axial direction, such as when a vehicle collides, the following effect can be obtained.
【００１６】すなわち、プロペラシャフトに対して軸方
向に衝撃エネルギが作用入力軸と出力軸とが両者が重な
る方向の軸方向に相対変位し衝撃エネルギの吸収を行な
う。この入力軸と出力軸との相対変位に伴い、内輪部材
と外輪部材とが軸方向に相対変位し、ブーツもこの変位
に対応するが、補強部材はブーツの外周に当接させただ
けであるので、補強部材がこのブーツの変位を妨げるこ
とはない。さらに、請求項２に記載の発明では、ブーツ
の一端は外輪部材と補強部材との間に挟持しただけであ
るので、上記衝撃入力による相対変位時には、ブーツの
挟持が簡単に外れる。請求項３〜５に記載の発明では、
補強部材は、外輪部材の外周の取付溝に係合部により係
合させただけであるので、上記相対変位により補強部材
が他の部材に衝突したときには、外輪部材に対する係合
が容易に外れ、補強部材が上記相対変位を妨げることは
ない。特に、請求項４に記載の発明では、補強部材スリ
ットが設けられているため、上記係合解除が容易に成さ
れ、さらに、請求項５に記載の発明は、補強部材を軟質
材料で形成しているため、変形容易で上記係合解除がよ
り容易に成される。That is, impact energy acts on the propeller shaft in the axial direction, and the input shaft and the output shaft are relatively displaced in the axial direction in which the two are superposed to absorb the impact energy. With this relative displacement between the input shaft and the output shaft, the inner ring member and the outer ring member are relatively displaced in the axial direction, and the boot also corresponds to this displacement, but the reinforcing member is only brought into contact with the outer periphery of the boot. Therefore, the reinforcing member does not hinder the displacement of the boot. Further, according to the second aspect of the invention, since one end of the boot is only sandwiched between the outer ring member and the reinforcing member, the sandwiching of the boot can be easily released during the relative displacement due to the impact input. In the invention described in claims 3 to 5,
Since the reinforcing member is only engaged with the mounting groove on the outer periphery of the outer ring member by the engaging portion, when the reinforcing member collides with another member due to the relative displacement, the engagement with the outer ring member is easily disengaged, The reinforcing member does not prevent the relative displacement. Particularly, in the invention described in claim 4, since the reinforcing member slit is provided, the disengagement is easily performed. Further, in the invention described in claim 5, the reinforcing member is formed of a soft material. Therefore, the deformation is easy and the disengagement is more easily performed.
【００１７】[0017]
【発明の実施の形態】以下に、本発明の実施の形態をダ
ブルオフセット型自在継手に適用した態様として、図面
に基づいて説明する。BEST MODE FOR CARRYING OUT THE INVENTION A mode in which an embodiment of the present invention is applied to a double offset type universal joint will be described below with reference to the drawings.
【００１８】（実施の形態１）図１は本発明実施の形態
１の詳細を示す断面図である。なお、この実施の形態１
は、請求項１〜５に記載の発明に対応する物である。図
１において、１は入力軸、２は出力軸、３は入力軸１と
出力軸２を連繋する自在継手である。(Embodiment 1) FIG. 1 is a sectional view showing details of Embodiment 1 of the present invention. In addition, this Embodiment 1
Is a thing corresponding to invention of Claims 1-5. In FIG. 1, 1 is an input shaft, 2 is an output shaft, and 3 is a universal joint connecting the input shaft 1 and the output shaft 2.
【００１９】４は前記自在継手３の外輪部材で、この外
輪部材４は、入力軸１又は出力軸２の何れか一方、この
実施の形態においては出力軸２に取り付けられている。
具体的には外輪部材４は略筒状に形成され、その一端側
に出力軸２が嵌合または溶接されている。Reference numeral 4 denotes an outer ring member of the universal joint 3, and this outer ring member 4 is attached to either the input shaft 1 or the output shaft 2, that is, the output shaft 2 in this embodiment.
Specifically, the outer ring member 4 is formed in a substantially tubular shape, and the output shaft 2 is fitted or welded to one end side thereof.
【００２０】５は前記外輪部材４の内周面に形成された
ボール溝である。前記ボール溝５は、外輪部材４に軸方
向に複数本、円周方向等間隔に配置して形成される。ま
た、前記ボール溝５は、外輪部材４の軸方向長さのう
ち、所定長さにわたり形成されている。なお、ボール溝
５には後述するボール（転動体）１０が配置されてい
る。Reference numeral 5 is a ball groove formed on the inner peripheral surface of the outer ring member 4. The ball grooves 5 are formed in the outer ring member 4 so as to be arranged in a plurality in the axial direction at equal intervals in the circumferential direction. The ball groove 5 is formed over a predetermined length of the axial length of the outer ring member 4. A ball (rolling body) 10 described later is arranged in the ball groove 5.
【００２１】６は前記外輪部材４の内部に配置された内
輪部材で、この内輪部材６は、入力軸１又は出力軸２の
何れか一方、この実施の形態においては、入力軸１に取
り付けられている。前記内輪部材６は、外周側に球状面
を有する略筒状に形成されており、その内周側が入力軸
１の端部１Ａにスプライン継手７を介して取り付けられ
ている。具体的には、入力軸１の端部１Ａに雄スプライ
ン７ａが形成され、内輪部材４に雌スプライン７ｂ形成
され、相互に圧入されている。また、前記内輪部材４は
スナップリング８によって、その脱落が防止してある。Reference numeral 6 denotes an inner ring member arranged inside the outer ring member 4, and the inner ring member 6 is attached to either the input shaft 1 or the output shaft 2, that is, the input shaft 1 in this embodiment. ing. The inner ring member 6 is formed in a substantially cylindrical shape having a spherical surface on the outer peripheral side, and the inner peripheral side thereof is attached to the end portion 1A of the input shaft 1 via a spline joint 7. Specifically, a male spline 7a is formed on the end portion 1A of the input shaft 1, and a female spline 7b is formed on the inner ring member 4, which are press-fitted to each other. The inner ring member 4 is prevented from falling off by a snap ring 8.
【００２２】９は前記内輪部材６の外周側に形成された
ボール溝である。前記ボール溝９は、内輪部材６の軸方
向に複数本、円周方向等間隔に配置して形成されてい
る。前記ボール溝９の数は外輪部材４に形成したボール
溝５の数と同数で、互いに対を成すように形成してあ
る。なお、前記ボール溝９内には、外輪部材４のボール
溝５と同様に、後述するボール（転動体）１０が配置さ
れている。Reference numeral 9 is a ball groove formed on the outer peripheral side of the inner ring member 6. A plurality of the ball grooves 9 are formed in the axial direction of the inner ring member 6 and arranged at equal intervals in the circumferential direction. The number of ball grooves 9 is the same as the number of ball grooves 5 formed in the outer ring member 4, and they are formed so as to form a pair. A ball (rolling element) 10, which will be described later, is arranged in the ball groove 9, similar to the ball groove 5 of the outer ring member 4.
【００２３】１０は前記ボール溝５，９内に配置された
複数のボールである。前記複数のボール１０は、ケージ
１１によって同一円周上に整列保持された状態でそれぞ
れ対を成すボール溝５，９内に配置され、外輪部材４と
内輪部材６とを連繋している。Reference numeral 10 is a plurality of balls arranged in the ball grooves 5 and 9. The plurality of balls 10 are arranged in the pair of ball grooves 5 and 9 while being aligned and held on the same circumference by the cage 11, and connect the outer ring member 4 and the inner ring member 6 to each other.
【００２４】１２は皿型プラグであり、この皿型プラグ
１２は、前記外輪部材４の内周側に設けられ、外輪部材
４の内部と出力軸２の内部との連通を遮断している。ま
た、１３は前記外輪部材４の他端部に取り付けられた止
め輪で、この止め輪１３は、ケージ１１に保持されたボ
ール１０がボール溝５内から抜け出すのを防止してい
る。Reference numeral 12 denotes a dish type plug, which is provided on the inner peripheral side of the outer ring member 4 and blocks communication between the inside of the outer ring member 4 and the inside of the output shaft 2. A retaining ring 13 is attached to the other end of the outer ring member 4, and the retaining ring 13 prevents the ball 10 held by the cage 11 from coming out of the ball groove 5.
【００２５】１４は前記外輪部材４の他端側と、内輪部
材６側の部材である入力軸１との間に設けられ、自在継
手３の封止を司るブーツである。前記ブーツ１４は、可
撓性を有するゴム材料からなり、前記ブーツ１４の一端
は補強部材１５の内周面と、外輪部材４の外周面との間
に狭持されて、外輪部材４に取り付けられおり、他端は
入力軸１に外周に取付バンド１６によって取り付けられ
ている。Reference numeral 14 is a boot which is provided between the other end side of the outer ring member 4 and the input shaft 1 which is a member on the inner ring member 6 side and controls the sealing of the universal joint 3. The boot 14 is made of a flexible rubber material, and one end of the boot 14 is attached to the outer ring member 4 by being sandwiched between the inner peripheral surface of the reinforcing member 15 and the outer peripheral surface of the outer ring member 4. The other end is attached to the input shaft 1 on the outer periphery by a mounting band 16.
【００２６】前記補強部材１５は、図２および図３に示
すように、一端部に、内周側に突出した凸部１５ａ（係
合部）と、一端部の拡径変形を容易にするスリット１５
ｂとが形成され、他端部に、内周面が前記ブーツ１４の
外周に当接可能な延在部１５ｃが形成され、中間部に、
ブーツ１４を外輪部材４の外周面との間に狭持する平担
部１５ｄが形成されている。なお、前記スリット１５ｂ
は、複数個、円周方向等間隔に形成されている。また、
延在部１５ｃおよび平坦部１５ｄの直径は外輪部材４の
外径よりも大きく形成されている。As shown in FIGS. 2 and 3, the reinforcing member 15 has a convex portion 15a (engagement portion) protruding toward the inner peripheral side at one end and a slit for facilitating the radial expansion deformation of the one end. 15
b is formed, an extending portion 15c whose inner peripheral surface is in contact with the outer periphery of the boot 14 is formed at the other end, and an intermediate portion is formed.
A flat portion 15d for sandwiching the boot 14 with the outer peripheral surface of the outer ring member 4 is formed. In addition, the slit 15b
Are formed at equal intervals in the circumferential direction. Also,
The diameter of the extending portion 15c and the flat portion 15d is formed to be larger than the outer diameter of the outer ring member 4.
【００２７】前記外輪部材４の外周面には、前記凸部１
５ａが係合する第１環状溝１７（取付溝）と、この第１
環状溝１７よりも入力軸１側の位置にブーツ１４の一端
を位置決めするための第２環状溝１８が形成されてい
る。On the outer peripheral surface of the outer ring member 4, the convex portion 1 is formed.
5a is engaged with the first annular groove 17 (mounting groove), and
A second annular groove 18 for positioning one end of the boot 14 is formed at a position closer to the input shaft 1 than the annular groove 17.
【００２８】ここで、前記補強部材１５は凸部１５ａが
第１環状溝１７と係合されるが、取付時には、まず、補
強部材１５を、凸部１５ａと第１環状溝１７とが係合す
る位置よりも図中右側の位置まで差し込む。この時、補
強部材１５は一端側に前記スリット１５ｂが形成してあ
るために、凸部１５ａが外輪部材４の外周面に当接した
拡径状態に容易に弾性変形可能である。次に、ブーツ１
４を、前記外輪部材４の第２環状溝１８に一端が接した
状態とした後、前記補強部材１５を図中左に移動させて
外輪部材４との間にブーツ１４を挟持しながら所定量移
動すると前記凸部１５ａと第１環状溝１７とが係合し、
図示のように補強部材１５が外輪部材４に対して固定さ
れる。この状態で、ブーツ１４の一端は、平坦部１５ｄ
と、第２環状溝１８との間で狭持して固定される。Here, the convex portion 15a of the reinforcing member 15 is engaged with the first annular groove 17, but at the time of mounting, the reinforcing member 15 is first engaged with the convex portion 15a and the first annular groove 17. Insert it to the position on the right side of the figure from the position to be used. At this time, since the reinforcing member 15 has the slit 15b formed on one end side, it can be easily elastically deformed to the expanded state in which the convex portion 15a is in contact with the outer peripheral surface of the outer ring member 4. Next, boots 1
After making one end of the outer ring member 4 in contact with the second annular groove 18 of the outer ring member 4, the reinforcing member 15 is moved to the left in the drawing to sandwich the boot 14 between the outer ring member 4 and a predetermined amount. When moved, the convex portion 15a and the first annular groove 17 are engaged with each other,
As illustrated, the reinforcing member 15 is fixed to the outer ring member 4. In this state, one end of the boot 14 has a flat portion 15d.
And the second annular groove 18 are sandwiched and fixed.
【００２９】斯かる構成において、自在継手は入力軸１
と出力軸２との間で回転駆動力を伝達する。In this structure, the universal joint is the input shaft 1
The rotational driving force is transmitted between the output shaft 2 and the output shaft 2.
【００３０】この時、自在継手３は、入力軸１と出力軸
２との間に交差角が生じた場合には屈曲し、ボール１０
がケージ１１に保持された状態で入力軸１と出力軸２と
の交差角の２等分線上に移動して、入力軸１と出力軸２
との間の等速性を保ちつつ動力伝達を行なう。また、前
記入力軸１と出力軸２とに軸方向の力が作用した場合に
は、ボール１０がボール溝５に沿って軸方向に伸縮可能
である。At this time, the universal joint 3 bends when an intersecting angle occurs between the input shaft 1 and the output shaft 2, and the ball 10
While being held in the cage 11, the input shaft 1 and the output shaft 2 are moved along the bisector of the intersection angle between the input shaft 1 and the output shaft 2
Power transmission is performed while maintaining constant speed between and. Further, when an axial force acts on the input shaft 1 and the output shaft 2, the ball 10 can expand and contract in the axial direction along the ball groove 5.
【００３１】自在継手が回転駆動力を伝達する際、その
遠心力によって、ブーツ１４が膨出する。この現象は自
在継手３に交差角が付いた状態で自在継手が作動すると
継手内部の空気が膨張し、さらに、顕著に現れる。When the universal joint transmits the rotational drive force, the centrifugal force causes the boot 14 to swell. This phenomenon becomes more remarkable when the universal joint operates when the universal joint 3 has a crossing angle, the air inside the joint expands.
【００３２】しかしながら、本実施の形態においては、
ブーツ１４の外周側にブーツ１４の外周に当接可能な補
強部材１５を設けたため、ブーツ１４が膨出しようとし
ても、補強部材１５により、膨出が規制される。However, in the present embodiment,
Since the reinforcing member 15 that can contact the outer periphery of the boot 14 is provided on the outer peripheral side of the boot 14, even if the boot 14 tries to bulge, the bulging is restricted by the reinforcing member 15.
【００３３】また、補強部材１５はブーツ１４とは独立
し、外輪部材４の外周面に取り付けられるため、ブーツ
１４の容量を多くでき可撓範囲を大きくすることができ
る。即ち、外輪部材４に対する内輪部材６の軸方向のス
トローク量を多くできる。また、作動角も大きくでき
る。Further, since the reinforcing member 15 is attached to the outer peripheral surface of the outer ring member 4 independently of the boot 14, the capacity of the boot 14 can be increased and the flexible range can be increased. That is, the stroke amount of the inner ring member 6 with respect to the outer ring member 4 in the axial direction can be increased. Also, the operating angle can be increased.
【００３４】また、補強部材１５を外輪部材４に取り付
けたため、補強部材１５の延在部１５ｃを外輪部材４の
外径寸法に略合わせ、それよりよりやや大きく形成する
だけの簡素な構成で済むため、製造コストが削減でき
る。また、ブーツ１４の一端は、平坦部１５ｄと、第２
環状溝１８との間で狭持されるため、取り付け用の特別
な部材が不要であり、コスト低減を図れる、さらに、取
付作業用の特殊工具も不要のため、容易に取り付けられ
る。また、補強部材１５を軟質材料で形成することで、
補強部材自身の弾性変形が容易になり、取り付けが更に
簡素化できる。Further, since the reinforcing member 15 is attached to the outer ring member 4, the extending portion 15c of the reinforcing member 15 is substantially matched with the outer diameter of the outer ring member 4, and a simple structure is required in which it is formed slightly larger than the outer diameter. Therefore, the manufacturing cost can be reduced. Further, one end of the boot 14 has a flat portion 15d and a second portion
Since it is sandwiched between the ring-shaped groove 18 and the annular groove 18, no special member for attachment is required, and the cost can be reduced. Further, since no special tool for attachment work is required, it can be easily attached. Further, by forming the reinforcing member 15 with a soft material,
The elastic deformation of the reinforcing member itself is facilitated, and the mounting can be further simplified.
【００３５】（実施の形態２）次に、本発明の実施の形
態２のプロペラシャフトについて説明する。この実施の
形態２は、請求項６に記載の発明に対応するもので、ま
た、本実施の形態１の自在継手３を軸方向の自動車の前
後方向に配置される衝撃吸収可能なプロペラシャフトに
適用した形態である。図４は実施の形態２のプロペラシ
ャフトを示し、図５はこの実施の形態２のプロペラシャ
フトに軸方向の衝撃エネルギが作用した状態を示す。な
お、先に説明した部分と重複する部分の説明は省略す
る。(Second Embodiment) Next, a propeller shaft according to a second embodiment of the present invention will be described. The second embodiment corresponds to the invention described in claim 6, and further, the universal joint 3 of the first embodiment is applied to a propeller shaft capable of shock absorption arranged in the longitudinal direction of the automobile in the axial direction. It is the applied form. FIG. 4 shows a propeller shaft according to the second embodiment, and FIG. 5 shows a state where impact energy in the axial direction acts on the propeller shaft according to the second embodiment. It should be noted that the description of the portions overlapping the portions described above will be omitted.
【００３６】図において、１９はプロペラシャフトで図
外の変速機から終減速機への動力伝達を行い、チューブ
２０の一端側を変速機に他端側を入力軸１に連結し、自
在継手３を介して、出力軸２からの回転駆動力を終減速
機に伝達している。In the figure, reference numeral 19 denotes a propeller shaft for transmitting power from a transmission (not shown) to a final reduction gear, and connecting one end side of the tube 20 to the transmission and the other end side to the input shaft 1, and a universal joint 3 The rotational driving force from the output shaft 2 is transmitted to the final reduction gear via the.
【００３７】センタベアリング２１は、取付ブラケット
２１ａにより車体のフロアに固定されているとともに、
プロペラシャフト１９は弾性部材２１ｃを介して車体に
対して弾性的に対して回転自在に支持されている。そし
て、前記センタベアリング２１は、自在継手３よりも所
定量間隔を置いて車体前方位置に配置されている。な
お、２１ｂはラジアルベアリング２１ｄの外輪に固定さ
れたリテーナである。The center bearing 21 is fixed to the floor of the vehicle body by a mounting bracket 21a, and
The propeller shaft 19 is elastically rotatably supported by the vehicle body via an elastic member 21c. The center bearing 21 is arranged at a front position of the vehicle body with a predetermined distance from the universal joint 3. Reference numeral 21b is a retainer fixed to the outer ring of the radial bearing 21d.
【００３８】前記補強部材１５は、延在部１５ｃがセン
タベアリング２１に向って延びており、その先端がセン
タベアリング２１のリテーナ２１ｂと所定量間隔を置い
てセンタベアリング２１の軸方向位置に臨んでいる。斯
かる構成において、前記プロペラシャフト１９を搭載し
た自動車が車体の前方から衝突した等、プロペラシャフ
ト１９に衝撃エネルギが作用した場合、即ち、入力軸１
に軸方向に所定の力が作用した場合には、図５に示すと
おり内輪部材６と外輪部材４が相対移動する。所定量相
対移動すると、内輪部材６が出力軸２の内部に入り込
む。これによって、プロペラシャフト１９の軸方向の長
さが短縮化し、プロペラシャフト１９に与えられた軸方
向の衝撃エネルギを吸収する。なお、この場合、皿型プ
ラグ１２はその取付位置から外れる。The reinforcing member 15 has an extending portion 15c extending toward the center bearing 21, and its tip faces the axial position of the center bearing 21 with a predetermined distance from the retainer 21b of the center bearing 21. There is. In such a configuration, when impact energy acts on the propeller shaft 19, such as when an automobile equipped with the propeller shaft 19 collides from the front of the vehicle body, that is, the input shaft 1
When a predetermined force acts on the inner ring member 6, the inner ring member 6 and the outer ring member 4 relatively move as shown in FIG. The inner ring member 6 enters the inside of the output shaft 2 when relatively moved by a predetermined amount. As a result, the axial length of the propeller shaft 19 is shortened, and the axial impact energy given to the propeller shaft 19 is absorbed. In this case, the dish plug 12 is removed from its mounting position.
【００３９】この時、補強部材１５の延在部の先端が、
リテーナ２１ｂと干渉すると、軸方向の力が補強部材１
５に作用し、補強部材１５の凸部１５ａと第１環状溝１
７との係合が解ける。そのため、補強部材１５が外輪部
材４とリテーナ２１ｂの間で突っ張ることがないので、
プロペラシャフト１９の軸方向短縮化の障害にならない
ので、短縮動作を確実に行なえる。At this time, the tip of the extending portion of the reinforcing member 15 is
When it interferes with the retainer 21b, the axial force is applied to the reinforcing member 1.
5, the convex portion 15a of the reinforcing member 15 and the first annular groove 1
The engagement with 7 can be released. Therefore, since the reinforcing member 15 does not stretch between the outer ring member 4 and the retainer 21b,
Since there is no obstacle to shortening the propeller shaft 19 in the axial direction, the shortening operation can be reliably performed.
【００４０】以上、実施の形態を図面に基づいて説明し
たが、具体的な構成はこの実施の形態に限られるもので
はなく、発明の要旨を逸脱しない範囲で変更可能であ
る。例えば、自在継手をダブルオフセット型に変えて、
トライポード型を採用することも可能である。また、補
強部材を外輪部材に対し加締めて固定することも可能で
ある。また、プロペラシャフトへの適用に限られず、ド
ライブシャフト等の各種動力伝達軸に採用することも可
能である。Although the embodiment has been described above with reference to the drawings, the specific structure is not limited to this embodiment, and can be modified within the scope of the invention. For example, changing the universal joint to the double offset type,
It is also possible to adopt a tripod type. It is also possible to crimp and fix the reinforcing member to the outer ring member. Further, the invention is not limited to the application to a propeller shaft, but can be applied to various power transmission shafts such as a drive shaft.
【図１】本発明実施の形態１の自在継手を示す断面図で
ある。FIG. 1 is a sectional view showing a universal joint according to a first embodiment of the present invention.
【図２】実施の形態１における補強部材を示す段断面図
である。FIG. 2 is a step sectional view showing a reinforcing member according to the first embodiment.
【図３】実施の形態１における補強部材を示す正面図で
ある。FIG. 3 is a front view showing a reinforcing member according to the first embodiment.
【図４】本発明実施の形態２のプロペラシャフトを示す
全体図である。FIG. 4 is an overall view showing a propeller shaft according to a second embodiment of the present invention.
【図５】本発明実施の形態２のプロペラシャフトの作用
説明図である。FIG. 5 is an operation explanatory view of the propeller shaft according to the second embodiment of the present invention.
１ 入力軸 ２ 出力軸 ３ 自在継手 ４ 外輪部材 ６ 内輪部材 １０ 転動体 １４ ブーツ １５ 補強部材 1 input axis 2 output shaft 3 universal joints 4 Outer ring member 6 Inner ring member 10 rolling elements 14 boots 15 Reinforcement member
Claims (6)
て、前記入力軸または出力軸の何れか一方の軸に取り付
けられる外輪部材と、この外輪部材の内側に配置され、
入力軸または出力軸の何れか他方の軸に取り付けられる
内輪部材と、外輪部材の内側に配置され、前記外輪部材
と内輪部材とを連繋する転動体と、継手内部を封止する
可撓性ブーツを有する自在継手において、 前記ブーツは、一端部を前記外輪部材の外周面に固定
し、他端を前記内輪部材側の部材に固定し、 一端部が前記外輪部材または内輪部材側の部材に固定さ
れ、前記ブーツの外周に当接可能な補強部材を設けたこ
とを特徴とする自在継手。1. A joint for connecting an input shaft and an output shaft, wherein the outer ring member is attached to any one of the input shaft and the output shaft, and is arranged inside the outer ring member.
An inner ring member attached to the other one of the input shaft and the output shaft, a rolling element that is arranged inside the outer ring member and connects the outer ring member and the inner ring member, and a flexible boot that seals the inside of the joint. In the universal joint, the boot has one end fixed to the outer peripheral surface of the outer ring member, the other end fixed to the inner ring member side member, and one end fixed to the outer ring member or the inner ring member side member. The universal joint is characterized in that a reinforcing member capable of contacting the outer circumference of the boot is provided.
周面と、補強部材の内周面との間に狭持したことを特徴
とする請求項１に記載の自在継手。2. The universal joint according to claim 1, wherein one end of the boot is sandwiched between the outer peripheral surface of the outer ring member and the inner peripheral surface of the reinforcing member.
し、前記補強部材の一端部には該取付溝に係合する係合
部を形成するとともに、係合部は外輪部材の外周面に沿
って弾性変形可能であることを特徴とする請求項１また
は２に記載の自在継手。3. A mounting groove is formed on the outer periphery of the outer ring member, and an engaging portion that engages with the mounting groove is formed at one end of the reinforcing member, and the engaging portion is the outer peripheral surface of the outer ring member. The universal joint according to claim 1 or 2, wherein the universal joint is elastically deformable along the direction.
的に拡径変形可能な所定数のスリットが形成されている
ことを特徴とする請求項３に記載の自在継手。4. The universal joint according to claim 3, wherein a predetermined number of slits capable of elastically expanding and deforming the engaging portion are formed in the engaging portion of the reinforcing member.
ることを特徴とする請求項１〜４のいずれかに記載の自
在継手。5. The universal joint according to claim 1, wherein the reinforcing member is made of a soft material.
終減速機側に接続された出力軸と、両軸の間に設けられ
た自在継手とを備えたプロペラシャフトにおいて、 前記自在継手として請求項１〜５のいずれかに記載され
た自在継手を設けたことを特徴とするプロペラシャフ
ト。6. An input shaft connected to a drive source side of a vehicle,
A propeller shaft comprising an output shaft connected to the final reduction gear side and a universal joint provided between both shafts, wherein the universal joint according to any one of claims 1 to 5 is provided as the universal joint. Propeller shaft characterized by that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001282689A JP4047564B2 (en) | 2001-09-18 | 2001-09-18 | Universal joint and propeller shaft using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001282689A JP4047564B2 (en) | 2001-09-18 | 2001-09-18 | Universal joint and propeller shaft using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003090353A true JP2003090353A (en) | 2003-03-28 |
| JP4047564B2 JP4047564B2 (en) | 2008-02-13 |
Family
ID=19106307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001282689A Expired - Fee Related JP4047564B2 (en) | 2001-09-18 | 2001-09-18 | Universal joint and propeller shaft using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4047564B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013531210A (en) * | 2010-07-19 | 2013-08-01 | 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 | Constant velocity joint assembly and method of securing a shaft to the assembly |
-
2001
- 2001-09-18 JP JP2001282689A patent/JP4047564B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013531210A (en) * | 2010-07-19 | 2013-08-01 | 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 | Constant velocity joint assembly and method of securing a shaft to the assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4047564B2 (en) | 2008-02-13 |
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