JP4522759B2 - Propeller shaft for automobile - Google Patents

Propeller shaft for automobile Download PDF

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JP4522759B2
JP4522759B2 JP2004181757A JP2004181757A JP4522759B2 JP 4522759 B2 JP4522759 B2 JP 4522759B2 JP 2004181757 A JP2004181757 A JP 2004181757A JP 2004181757 A JP2004181757 A JP 2004181757A JP 4522759 B2 JP4522759 B2 JP 4522759B2
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hollow pipe
propeller shaft
shaft
constant velocity
automobile
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JP2006002901A (en
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良平 大澤
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Showa Corp
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Showa Corp
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Description

本発明は自動車用プロペラシャフトに関する。   The present invention relates to an automobile propeller shaft.

自動車用プロペラシャフトとして、特許文献１に記載の如く、互いにスプライン嵌合する雌形部材と雄形部材とを有するプロペラシャフトにおいて、少なくとも雌形部材を中空パイプにより構成し、この雌形部材のヨーク側のシャフト部分の直径をスプライン部分の大径部の直径よりも大きくしてスプライン部分とシャフト部分との間に段差部分を生ずるようにしたものがある。このプロペラシャフトによれば、雌形部材を中空パイプにより構成し、スプライン部分とシャフト部分との間に段差部分を形成したため、プロペラシャフトの前後方向に強い衝撃が加わったときこの段差部分が変形若しくは破断して衝撃を吸収することができる。
特開平8-226454 As a propeller shaft for an automobile, as described in Patent Document 1, in a propeller shaft having a female member and a male member that are spline-fitted to each other, at least the female member is constituted by a hollow pipe, and a yoke of the female member is formed. In some cases, the diameter of the shaft portion on the side is made larger than the diameter of the large-diameter portion of the spline portion to create a step portion between the spline portion and the shaft portion. According to this propeller shaft, since the female member is formed of a hollow pipe and a step portion is formed between the spline portion and the shaft portion, the step portion is deformed or deformed when a strong impact is applied in the front-rear direction of the propeller shaft. It can break and absorb impact.
JP-A-8-226454

特許文献１の自動車用プロペラシャフトでは、衝撃荷重吸収特性を定めるために、雌形部材のスプライン部分とシャフト部分との間の段差部分の肉厚を、シャフト部分の肉厚に対して一定の比率で薄肉化する必要があり、複雑である。   In the automotive propeller shaft of Patent Document 1, the thickness of the step portion between the spline portion and the shaft portion of the female member is set to a constant ratio with respect to the thickness of the shaft portion in order to determine the impact load absorption characteristics. It is necessary to make it thinner and complicated.

本発明の課題は、自動車用プロペラシャフトにおいて、衝撃荷重吸収特性を簡易に設定可能にすることにある。   An object of the present invention is to make it possible to easily set impact load absorption characteristics in an automobile propeller shaft.

請求項１の発明は、複数の分割シャフトを等速継手により連結し、一方の分割シャフトを構成する中空パイプに等速継手のアウタを設け、他方の分割シャフトに等速継手のインナを設け、自動車の衝突時に等速継手の前記アウタとの相対移動により前記インナと衝合して押し込まれる環体が弾性体を介して前記中空パイプに内挿された自動車用プロペラシャフトにおいて、自動車の衝突に伴なう衝撃荷重が環体を弾性体とともに中空パイプに押し込み、中空パイプに対する弾性体の摺動抵抗力により衝撃荷重を吸収するようにしたものである。 The invention of claim 1, linked by a constant velocity joint a plurality of divided shaft, the outer constant velocity joint is provided in the hollow pipe which constitutes one of the split shaft, setting the inner constant velocity joint to the other split shaft in automotive propeller shaft which is interpolated in the hollow pipe annulus is pushed by the inner and abutting via an elastic member by relative movement of the outer constant velocity joint during an automobile collision, a collision of the motor vehicle The impact load accompanying this pushes the ring body together with the elastic body into the hollow pipe, and the impact load is absorbed by the sliding resistance of the elastic body against the hollow pipe .

請求項２の発明は、請求項１の発明において更に、前記環体の軸方向複数位置に弾性体を設けるようにしたものである。 According to a second aspect of the present invention, in the first aspect of the invention, an elastic body is provided at a plurality of positions in the axial direction of the ring body .

請求項３の発明は、請求項１又は２の発明において更に、前記環体が中空パイプに接着されて内挿され、接着剥離力により衝撃荷重を吸収するようにしたものである。 According to a third aspect of the present invention, in the first or second aspect of the present invention, the ring body is bonded and inserted into a hollow pipe, and an impact load is absorbed by an adhesive peeling force .

請求項４の発明は、請求項１〜３のいずれかの発明において更に、前記環体が中空パイプを封止して等速継手の接続空間の一端を密封するようにしたものである。 The invention of claim 4 is the invention according to any one of claims 1 to 3, wherein the ring body seals one end of the connection space of the constant velocity joint by sealing the hollow pipe .

（請求項１）
(a)環体の中空パイプに対する弾性体の弾性摩擦摺動抵抗力（初期接着剥離力も含む）を調整し、プロペラシャフトの衝撃荷重吸収特性を簡易に設定できる。 (Claim 1)
(a) It is possible to easily set the impact load absorption characteristics of the propeller shaft by adjusting the elastic frictional sliding resistance force (including the initial adhesion peeling force) of the elastic body with respect to the hollow pipe of the annular body .

（請求項２）
(b)環体の外周に設けられる弾性体の材料、形状、個数等を変更することにより、弾性体の弾性摩擦摺動抵抗力を調整し、プロペラシャフトの衝撃荷重吸収特性を簡易に設定できる。 (Claim 2 )
(b) By changing the material, shape, number, etc. of the elastic body provided on the outer periphery of the ring body, the elastic friction sliding resistance force of the elastic body can be adjusted, and the impact load absorption characteristics of the propeller shaft can be set easily. .

（請求項３）
(c)環体の外周に設けられる接着剤の材料等を変更することにより、接着剥離力を調整し、プロペラシャフトの衝撃荷重吸収特性を簡易に設定できる。 (Claim 3 )
(c) By changing the material of the adhesive provided on the outer periphery of the ring body, the adhesive peeling force can be adjusted, and the impact load absorption characteristics of the propeller shaft can be easily set.

（請求項４）
(d)環体が中空パイプを封止して等速継手の接続空間の一端を密封するシール部材を兼ねることにより、シールキャップ等の専用シール部材を用いることなく、等速継手の油脂潤滑性能を簡易に維持できる。 (Claim 4 )
(d) Since the ring also serves as a seal member that seals one end of the connection space of the constant velocity joint by sealing the hollow pipe, the oil and grease lubrication performance of the constant velocity joint without using a dedicated seal member such as a seal cap Can be easily maintained.

図１は自動車用プロペラシャフトを示す全体図、図２は図１の要部拡大図、図３は衝突初期状態を示す断面図、図４は衝突終期状態を示す断面図である。   1 is an overall view showing a propeller shaft for an automobile, FIG. 2 is an enlarged view of a main part of FIG. 1, FIG. 3 is a cross-sectional view showing an initial collision state, and FIG. 4 is a cross-sectional view showing an end-collision state.

自動車用プロペラシャフト１０は、図１、図２に示す如く、後側分割シャフト１１と前側分割シャフト１２に分割された２本のシャフト部材からなり、両分割シャフト１１、１２を等速継手（スライダブルジョイント）２０により連結して構成される。後側分割シャフト１１の後端部は、自在継手１４を介して、デファレンシャルギアに接続される連結ヨーク１５と連結され、前側分割シャフト１２の前端部は、自在継手１６を介して、エンジン側のトランスミッションの出力軸に接続される連結ヨーク１７と連結される。尚、等速継手２０の後述するシャフトスタブ２２は、センタベアリング１８、ゴム状弾性部材１８Ａを介してセンタブラケット１９に支持される。   As shown in FIGS. 1 and 2, the propeller shaft 10 for an automobile is composed of two shaft members divided into a rear divided shaft 11 and a front divided shaft 12. Double joint) 20 is connected. The rear end portion of the rear split shaft 11 is connected to a connection yoke 15 connected to a differential gear via a universal joint 14, and the front end portion of the front side split shaft 12 is connected to the engine side via a universal joint 16. It is connected with a connecting yoke 17 connected to the output shaft of the transmission. A shaft stub 22 described later of the constant velocity joint 20 is supported by the center bracket 19 via a center bearing 18 and a rubber-like elastic member 18A.

プロペラシャフト１０は、一方の分割シャフト１２を構成する中空パイプ１２Ａの一端に等速継手２０の筒状アウタ２１を摩擦圧接により接続する。また、他方の分割シャフト１１の一端に等速継手２０のシャフトスタブ２２を接続し、シャフトスタブ２２の先端部に軸状インナ２３を備える。インナ２３に設けたトリポード２３Ｂに装填したローラ２４を、アウタ２１に設けた溝２１Ａに嵌入して構成される。   In the propeller shaft 10, a cylindrical outer 21 of the constant velocity joint 20 is connected to one end of a hollow pipe 12 </ b> A constituting one split shaft 12 by friction welding. A shaft stub 22 of the constant velocity joint 20 is connected to one end of the other split shaft 11, and a shaft-like inner 23 is provided at the tip of the shaft stub 22. The roller 24 loaded in the tripod 23 </ b> B provided in the inner 23 is configured to be fitted into a groove 21 </ b> A provided in the outer 21.

等速継手２０は、アウタ２１とインナ２３の接続空間（グリース充填室）３０を、金属薄板からなるブーツアダプタ３１とゴム状弾性体からなるブーツ３２を用いて密封し、ローラ２４の転動摺動性、耐摩耗性を向上するためのグリースをこの接続空間３０に封入する。即ち、アウタ２１の外周に設けたＯリング等のシール部材３３のまわりに、ブーツアダプタ３１の基部３１Ａを密に挿着して加締め固定するとともに、ブーツ３２の一端部はブーツアダプタ３１の先端部３１Ｂに抱着されて密に嵌着され、ブーツ３２の他端部たる嵌合部３２Ａがインナ２３の外周嵌着部２３Ａに密に嵌着されて、ブーツバンド３４で被着固定される。   The constant velocity joint 20 seals the connection space (grease filling chamber) 30 between the outer 21 and the inner 23 by using a boot adapter 31 made of a metal thin plate and a boot 32 made of a rubber-like elastic body, and the rolling slide of the roller 24 is performed. Grease for improving the mobility and wear resistance is enclosed in the connection space 30. That is, the base 31A of the boot adapter 31 is tightly inserted and fixed around the sealing member 33 such as an O-ring provided on the outer periphery of the outer 21, and one end of the boot 32 is fixed to the tip of the boot adapter 31. The fitting portion 32A which is the other end portion of the boot 32 is tightly fitted to the outer circumferential fitting portion 23A of the inner 23 and is fixedly attached by the boot band 34. .

しかるに、プロペラシャフト１０は、自動車の衝突時に相対して移動する等速継手２０のインナ２３の軸端が衝合して押し込まれる環体４０を、分割シャフト１２の中空パイプ１２Ａ及びアウタ２１に内挿してある。   However, the propeller shaft 10 has an annular body 40 inserted into the hollow pipe 12 </ b> A and the outer 21 of the split shaft 12 so that the shaft end of the inner 23 of the constant velocity joint 20 that moves relative to each other at the time of a car collision is abutted. It is inserted.

環体４０は、一端開口の有底筒状体をなし、開口側の外周の軸方向２位置に帯状ゴム環からなる弾性体４１、４２を被着し、底部４０Ａ側の外周にゴム環からなる弾性体４３を被着している。環体４０は、中空パイプ１２Ａの内周との間で弾性体４１、４２を挟圧し、アウタ２１の内周との間で弾性体４３を挟圧するように、中空パイプ１２Ａとアウタ２１に圧入されて保持される。尚、弾性体４１、４２は、中空パイプ１２Ａの内周に挟圧かつ接着されるものでも良い。また、環体４０は、中空パイプ１２Ａ又はアウタ２１のいずれか一方にのみ内装されて圧入保持されても良い。   The ring body 40 is a bottomed cylindrical body having an opening at one end, and elastic bodies 41 and 42 made of belt-shaped rubber rings are attached to two axial positions on the outer periphery on the opening side, and the rubber ring is attached to the outer periphery on the bottom 40A side. An elastic body 43 is attached. The annular body 40 is press-fitted into the hollow pipe 12A and the outer 21 such that the elastic bodies 41 and 42 are sandwiched between the inner periphery of the hollow pipe 12A and the elastic body 43 is sandwiched between the inner periphery of the outer 21. Being held. The elastic bodies 41 and 42 may be sandwiched and bonded to the inner periphery of the hollow pipe 12A. Further, the ring body 40 may be housed in only one of the hollow pipe 12A and the outer 21 and press-fitted and held.

環体４０は、プロペラシャフト１０の通常使用状態で、図２に示す如く、該環体４０の底部４０Ａがインナ２３の軸端との間に一定距離ａを介する位置に保持される。   As shown in FIG. 2, the ring body 40 is held at a position through the fixed distance a between the bottom portion 40 </ b> A of the ring body 40 and the shaft end of the inner 23 in the normal use state of the propeller shaft 10.

プロペラシャフト１０の衝撃荷重吸収動作は以下の如くになる。
(1)自動車の衝突時に、プロペラシャフト１０の軸方向に沿う衝撃荷重が作用すると、分割シャフト１１と分割シャフト１２が収縮方向に相対移動し、インナ２３の軸端が図３に示す如くに環体４０の底部４０Ａに衝合するに至る。 The shock load absorbing operation of the propeller shaft 10 is as follows.
(1) When an impact load is applied along the axial direction of the propeller shaft 10 at the time of a car collision, the split shaft 11 and the split shaft 12 move relative to each other in the contraction direction, and the shaft end of the inner 23 rotates as shown in FIG. It comes into contact with the bottom 40A of the body 40.

(2)上述(1)の経過後、インナ２３は衝撃荷重の作用下で、環体４０を図４に示す如くに中空パイプ１２Ａに対して更に押し込む。衝撃荷重は環体４０を弾性体４１、４２とともに中空パイプ１２Ａに押し込み、中空パイプ１２Ａに対する弾性体４１、４２の摩擦摺動抵抗力や接着剥離力が衝撃荷重を吸収緩和するものになる。   (2) After the passage of the above (1), the inner 23 further pushes the ring body 40 into the hollow pipe 12A as shown in FIG. The impact load pushes the ring body 40 into the hollow pipe 12A together with the elastic bodies 41 and 42, and the frictional sliding resistance force and adhesive peeling force of the elastic bodies 41 and 42 against the hollow pipe 12A absorb and relax the impact load.

環体４０は、底部４０Ａ及び弾性体４３により、中空パイプ１２Ａ及びアウタ２１を封止し、等速継手２０の接続空間３０の一端を密封する。   The ring body 40 seals the hollow pipe 12 </ b> A and the outer 21 by the bottom portion 40 </ b> A and the elastic body 43, and seals one end of the connection space 30 of the constant velocity joint 20.

尚、プロペラシャフト１０は、分割シャフト１２を構成する中空パイプ１２Ａの軸方向中間部にダイナミックダンパ５０を設けてある。ダイナミックダンパ５０は、中空パイプ１２Ａに圧入して嵌挿されて固定配置され、プロペラシャフト１０の振動を低減し、車体振動や騒音を低減する。   In addition, the propeller shaft 10 is provided with a dynamic damper 50 at an intermediate portion in the axial direction of the hollow pipe 12 </ b> A constituting the split shaft 12. The dynamic damper 50 is press-fitted into the hollow pipe 12A and is fixedly disposed, reduces vibration of the propeller shaft 10, and reduces vehicle body vibration and noise.

本実施例によれば以下の作用効果を奏する。
(a)中空パイプ１２Ａに締りばめされる環体４０の締めしろを設定する等により、環体４０の中空パイプ１２Ａに対する摩擦摺動抵抗力（初期接着剥離力も含む）を調整し、プロペラシャフト１０の衝撃荷重吸収特性を簡易に設定できる。 According to the present embodiment, the following operational effects can be obtained.
(a) Adjusting the frictional sliding resistance force (including the initial adhesive peeling force) of the ring body 40 to the hollow pipe 12A by setting the interference of the ring body 40 fitted to the hollow pipe 12A, etc., and propeller shaft 10 impact load absorption characteristics can be set easily.

(b)環体４０の外周に設けられる弾性体４１、４２の材料、形状、個数等を変更することにより、弾性体４１、４２の弾性摩擦摺動抵抗力を調整し、プロペラシャフト１０の衝撃荷重吸収特性を簡易に設定できる。   (b) By changing the material, shape, number, and the like of the elastic bodies 41, 42 provided on the outer periphery of the ring body 40, the elastic friction sliding resistance force of the elastic bodies 41, 42 is adjusted, and the impact of the propeller shaft 10 Load absorption characteristics can be set easily.

(c)環体４０の外周に設けられる接着剤の材料等を変更することにより、接着剥離力を調整し、プロペラシャフト１０の衝撃荷重吸収特性における摺動初期特性を簡易に設定できる。   (c) By changing the material or the like of the adhesive provided on the outer periphery of the ring body 40, the adhesive peeling force can be adjusted, and the initial sliding characteristic in the impact load absorption characteristic of the propeller shaft 10 can be easily set.

(d)環体４０が中空パイプ１２Ａを封止して等速継手２０の接続空間３０の一端を密封するシール部材を兼ねることにより、シールキャップ等の専用シール部材を用いることなく、等速継手２０の油脂潤滑性能を簡易に維持できる。   (d) Since the annular body 40 also serves as a seal member that seals the hollow pipe 12A and seals one end of the connection space 30 of the constant velocity joint 20, a constant velocity joint can be used without using a dedicated seal member such as a seal cap. The oil / fat lubrication performance of 20 can be easily maintained.

以上、本発明の実施例を図面により詳述したが、本発明の具体的な構成はこの実施例に限られるものではなく、本発明の要旨を逸脱しない範囲の設計の変更等があっても本発明に含まれる。
The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. It is included in the present invention.

図１は自動車用プロペラシャフトを示す全体図である。FIG. 1 is an overall view showing an automobile propeller shaft. 図２は図１の要部拡大図である。FIG. 2 is an enlarged view of a main part of FIG. 図３は衝突初期状態を示す断面図である。FIG. 3 is a cross-sectional view showing an initial collision state. 図４は衝突終期状態を示す断面図である。FIG. 4 is a cross-sectional view showing the final state of the collision.

符号の説明Explanation of symbols

１０ プロペラシャフト
１１、１２ 分割シャフト
１２Ａ 中空パイプ
２０ 等速継手
２１ アウタ
２３ インナ
３０ 接続空間
４０ 環体
４１、４２ 弾性体 DESCRIPTION OF SYMBOLS 10 Propeller shaft 11, 12 Split shaft 12A Hollow pipe 20 Constant velocity joint 21 Outer 23 Inner 30 Connection space 40 Ring body 41, 42 Elastic body

Claims (4)

複数の分割シャフトを等速継手により連結し、一方の分割シャフトを構成する中空パイプに等速継手のアウタを設け、
他方の分割シャフトに等速継手のインナを設け、
自動車の衝突時に等速継手の前記アウタとの相対移動により前記インナと衝合して押し込まれる環体が弾性体を介して前記中空パイプに内挿された自動車用プロペラシャフトにおいて、
自動車の衝突に伴なう衝撃荷重が環体を弾性体とともに中空パイプに押し込み、中空パイプに対する弾性体の摺動抵抗力により衝撃荷重を吸収することを特徴とする自動車用プロペラシャフト。 A plurality of split shafts are connected by a constant velocity joint, and an outer of the constant velocity joint is provided in a hollow pipe constituting one split shaft,
Setting the other divided shaft of the constant velocity joint inner,
In the inner and abutting to an automotive propeller shaft annulus is interpolated in the hollow pipe via the elastic body is pushed by the relative movement of the outer constant velocity joint during an automobile collision,
A propeller shaft for an automobile characterized in that an impact load caused by a collision of an automobile pushes the ring body into the hollow pipe together with the elastic body and absorbs the impact load by a sliding resistance force of the elastic body against the hollow pipe . 前記環体の軸方向複数位置に弾性体を設ける請求項１に記載の自動車用プロペラシャフト。 The propeller shaft for an automobile according to claim 1 , wherein an elastic body is provided at a plurality of positions in the axial direction of the ring body. 前記環体が中空パイプに接着されて内挿され、接着剥離力により衝撃荷重を吸収する請求項１又は２に記載の自動車用プロペラシャフト。 The propeller shaft for an automobile according to claim 1 or 2 , wherein the ring body is bonded and inserted into a hollow pipe and absorbs an impact load by an adhesive peeling force. 前記環体が中空パイプを封止して等速継手の接続空間の一端を密封する請求項１〜３のいずれかに記載の自動車用プロペラシャフト。 Automotive propeller shaft according to any one of claims 1 to 3 for sealing one end of the connection space of the annulus is constant velocity sealing the hollow pipe fittings.
JP2004181757A 2004-06-18 2004-06-18 Propeller shaft for automobile Expired - Fee Related JP4522759B2 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05200875A (en) * 1992-01-23 1993-08-10 Tokai Rubber Ind Ltd Manufacture of cylindrical body
JPH06213227A (en) * 1993-01-20 1994-08-02 Suzuki Motor Corp Propeller shaft for automobile
JPH07208445A (en) * 1993-11-30 1995-08-11 Toray Ind Inc Propeller shaft
JPH11227478A (en) * 1998-02-16 1999-08-24 Ntn Corp Propeller shaft for automobile
JP2001347845A (en) * 2000-06-07 2001-12-18 Ntn Corp Propeller shaft for automobile
JP2002054622A (en) * 2000-08-11 2002-02-20 Sango Co Ltd Hollow tube part of propeller shaft and method of manufacturing the same
JP2003083356A (en) * 2001-09-10 2003-03-19 Hitachi Unisia Automotive Ltd Connecting structure of power transmitting member

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05200875A (en) * 1992-01-23 1993-08-10 Tokai Rubber Ind Ltd Manufacture of cylindrical body
JPH06213227A (en) * 1993-01-20 1994-08-02 Suzuki Motor Corp Propeller shaft for automobile
JPH07208445A (en) * 1993-11-30 1995-08-11 Toray Ind Inc Propeller shaft
JPH11227478A (en) * 1998-02-16 1999-08-24 Ntn Corp Propeller shaft for automobile
JP2001347845A (en) * 2000-06-07 2001-12-18 Ntn Corp Propeller shaft for automobile
JP2002054622A (en) * 2000-08-11 2002-02-20 Sango Co Ltd Hollow tube part of propeller shaft and method of manufacturing the same
JP2003083356A (en) * 2001-09-10 2003-03-19 Hitachi Unisia Automotive Ltd Connecting structure of power transmitting member

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