JP4587205B2 - Axle module - Google Patents

Axle module Download PDF

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JP4587205B2
JP4587205B2 JP2004186250A JP2004186250A JP4587205B2 JP 4587205 B2 JP4587205 B2 JP 4587205B2 JP 2004186250 A JP2004186250 A JP 2004186250A JP 2004186250 A JP2004186250 A JP 2004186250A JP 4587205 B2 JP4587205 B2 JP 4587205B2
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Prior art keywords
mounting flange
constant velocity
velocity universal
vehicle body
wheel
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JP2006007909A (en
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茂明 福島
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NTN Corp
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NTN Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/187—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with all four raceways integrated on parts other than race rings, e.g. fourth generation hubs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/067—Fixing them in a housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
    • F16D2003/22326—Attachments to the outer joint member, i.e. attachments to the exterior of the outer joint member or to the shaft of the outer joint member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2300/00—Special features for couplings or clutches
    • F16D2300/12—Mounting or assembling

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Description

本発明は、一対の等速自在継手と、これら等速自在継手に連結されたドライブシャフトと、一対の等速自在継手のうちアウトボード側の等速自在継手と車輪用軸受とがユニット化された車輪用軸受アッセンブリー（以下、アクスルモジュールと言う）、特に、車両への組立作業性を向上させたアクスルモジュールに関する。   In the present invention, a pair of constant velocity universal joints, a drive shaft connected to these constant velocity universal joints, and a constant velocity universal joint on the outboard side of the pair of constant velocity universal joints and a wheel bearing are unitized. In particular, the present invention relates to a wheel bearing assembly (hereinafter referred to as an axle module), and more particularly, to an axle module that improves assembly workability to a vehicle.

自動車等の車両のエンジン動力を車輪に伝達する動力伝達装置は、エンジンから車輪へ動力を伝達すると共に、悪路走行時における車両のバウンドや車両の旋回時に生じる車輪からの径方向や軸方向変位、およびモーメント変位を許容する必要があるため、例えば、図１０に示すように、エンジン側と駆動車輪側との間に介装されるドライブシャフト１００の一端を、摺動型等速自在継手１０１を介してディファレンシャル１０２に連結し、他端を、固定型等速自在継手１０３を含む車輪用軸受装置１０４を介して車輪１０５に連結している。   A power transmission device that transmits engine power of a vehicle such as an automobile to a wheel transmits power from the engine to the wheel, and also causes radial or axial displacement from the wheel that occurs when the vehicle bounces or turns when traveling on a rough road. For example, as shown in FIG. 10, one end of the drive shaft 100 interposed between the engine side and the drive wheel side is connected to a sliding type constant velocity universal joint 101. The other end is connected to a wheel 105 via a wheel bearing device 104 including a fixed type constant velocity universal joint 103.

このような車輪用軸受装置１０４は、第３世代と呼称される車輪用軸受１０６と、この車輪用軸受１０６に着脱自在に連結された固定型等速自在継手１０３とからなる。近年、この車輪用軸受装置１０４は、さらに軽量・コンパクト化を狙って、車輪用軸受１０６と固定型等速自在継手１０３とをユニット化する、所謂第４世代の構造に移行する傾向にある。   Such a wheel bearing device 104 includes a wheel bearing 106 referred to as a third generation and a fixed type constant velocity universal joint 103 detachably connected to the wheel bearing 106. In recent years, this wheel bearing device 104 tends to shift to a so-called fourth generation structure in which the wheel bearing 106 and the fixed type constant velocity universal joint 103 are unitized for further light weight and compactness.

図１１は、このような第４世代の車輪用軸受装置の代表的な一例である。なお、以下の説明では、車両に組み付けた状態で車両の外側寄りとなる側をアウトボード側（図面左側）、中央寄り側をインボード側（図面右側）という。
この車輪用軸受装置は、ハブ輪５１と複列の転がり軸受５２と等速自在継手５３とをユニット化して構成している。ハブ輪５１は、アウトボード側の端部に車輪（図示せず）を取り付けるための車輪取付フランジ５４を一体に有し、その円周等配位置にハブボルト５６が植設されている。ハブ輪５１の内周面には凹凸部５５が形成され、熱処理によって表面硬さを５４〜６４ＨＲＣの範囲に硬化層が形成されている。 FIG. 11 is a typical example of such a fourth generation wheel bearing device. In the following description, the side closer to the outer side of the vehicle when assembled to the vehicle is referred to as the outboard side (left side in the drawing), and the side closer to the center is referred to as the inboard side (right side in the drawing).
This wheel bearing device comprises a hub wheel 51, a double row rolling bearing 52 and a constant velocity universal joint 53 as a unit. The hub wheel 51 integrally has a wheel mounting flange 54 for mounting a wheel (not shown) at an end portion on the outboard side, and hub bolts 56 are implanted at circumferentially equidistant positions. Concave and convex portions 55 are formed on the inner peripheral surface of the hub wheel 51, and a hardened layer is formed with a surface hardness in the range of 54 to 64 HRC by heat treatment.

複列の転がり軸受５２は、外方部材５７と内方部材５８と複列のボール５９、５９とを備えている。外方部材５７は、外周に懸架装置を構成するナックルＮ１に取り付けるための車体取付フランジ５７ｂを一体に有し、内周には複列の外側転走面５７ａ、５７ａが形成されている。一方、内方部材５８は、ハブ輪５１と、このハブ輪５１の小径段部６３に突合せ状態に内嵌された外側継手部材６４とを指し、この外側継手部材６４の外周にインボード側の内側転走面６４ａが形成されている。複列のボール５９、５９がこれら転走面５７ａ、５１ａと５７ａ、６４ａ間にそれぞれ収容され、保持器６０、６０で転動自在に保持されている。また、複列の転がり軸受５２の端部にはシール６１、６２が装着され、軸受内部に封入された潤滑グリースの漏洩と、外部からの雨水やダスト等が軸受内部に侵入するのを防止している。   The double-row rolling bearing 52 includes an outer member 57, an inner member 58, and double-row balls 59, 59. The outer member 57 integrally has a vehicle body attachment flange 57b for attachment to the knuckle N1 constituting the suspension device on the outer periphery, and double row outer rolling surfaces 57a, 57a are formed on the inner periphery. On the other hand, the inner member 58 refers to the hub wheel 51 and the outer joint member 64 fitted in the small diameter step portion 63 of the hub wheel 51 so as to abut on the outer ring member 64. An inner rolling surface 64a is formed. Double-row balls 59 and 59 are accommodated between the rolling surfaces 57a and 51a and 57a and 64a, respectively, and are held by the cages 60 and 60 so as to be freely rollable. In addition, seals 61 and 62 are attached to the ends of the double row rolling bearing 52 to prevent leakage of lubricating grease sealed inside the bearing and intrusion of rainwater and dust from the outside into the bearing. ing.

等速自在継手５３は、外側継手部材６４と継手内輪６５とケージ６６およびトルク伝達ボール６７とを備えている。そして、外側継手部材６４は、カップ状のマウス部６８と、このマウス部６８の底部をなす肩部６９と、この肩部６９から軸方向に延びる中空の軸部７０を有している。この軸部７０の外周には、前記小径段部６３に内嵌される小径段部７０ａと、この小径段部７０ａから軸方向に延びる嵌合部７０ｂが形成されている。そして、外側継手部材６４の軸部７０をハブ輪５１に内嵌すると共に、軸部７０にマンドレル等の拡径治具を押し込んで嵌合部７０ｂを拡径し、嵌合部７０ｂをハブ輪５１の凹凸部５５に食い込ませて加締め、ハブ輪５１と外側継手部材６４とが一体に塑性結合されている。   The constant velocity universal joint 53 includes an outer joint member 64, a joint inner ring 65, a cage 66 and a torque transmission ball 67. The outer joint member 64 has a cup-shaped mouth portion 68, a shoulder portion 69 that forms the bottom portion of the mouth portion 68, and a hollow shaft portion 70 that extends from the shoulder portion 69 in the axial direction. On the outer periphery of the shaft portion 70, a small diameter step portion 70a fitted into the small diameter step portion 63 and a fitting portion 70b extending in the axial direction from the small diameter step portion 70a are formed. Then, the shaft portion 70 of the outer joint member 64 is fitted into the hub wheel 51, and a diameter expanding jig such as a mandrel is pushed into the shaft portion 70 to increase the diameter of the fitting portion 70b. 51, the hub wheel 51 and the outer joint member 64 are integrally plastically joined.

ここで、ナックルＮ１の内径に外方部材５７が嵌合されるが、その嵌合面５７ｃの外径をＤａとし、等速自在継手５３の最大外径、ここでは、マウス部６８の外周に装着されたブーツ７１の最大外径をＤｂとしたとき、Ｄａ≧Ｄｂに設定されている。これにより、複列の転がり軸受５２と等速自在継手５３とを予め組み立ててからナックルＮ１に組み付けることが可能となり、車両への組立の作業性が一段と改善され、また、点検・補修等の作業性も向上する。
特開２００１−１７１３０８号公報 Here, the outer member 57 is fitted to the inner diameter of the knuckle N1. The outer diameter of the fitting surface 57c is Da, and the maximum outer diameter of the constant velocity universal joint 53, here, the outer circumference of the mouse portion 68 is set. When the maximum outer diameter of the attached boot 71 is Db, Da ≧ Db is set. As a result, the double-row rolling bearing 52 and the constant velocity universal joint 53 can be assembled in advance and then assembled to the knuckle N1, further improving the workability of the assembly to the vehicle, and the work such as inspection and repair. Also improves.
JP 2001-171308 A

こうした従来の車輪用軸受装置では、外方部材５７における嵌合面５７ｃの外径Ｄａを等速自在継手５３の最大外径Ｄｂよりも大きくすることによって、複列の転がり軸受５２と等速自在継手５３とが一体となった車輪用軸受装置がナックルＮ１内を通過することができる。さらに、嵌合面５７ｃの外径Ｄａと等速自在継手５３の最大外径Ｄｂとの間隙を大きくすれば、その組立作業性を向上させることができるが、これは外方部材５７だけでなくナックルＮ１の重量増加を招き、軽量・コンパクト化された装置としての効果を半減させることになり好ましくない。増してや、インボード側の摺動型等速自在継手が図１０に示すようなフランジタイプとなれば、外方部材５７における嵌合面５７ｃの外径Ｄａ、あるいはナックルＮ１の内径７２をこのフランジ外径より大径に設定するのは極めて難しい。   In such a conventional wheel bearing device, the outer diameter Da of the fitting surface 57 c of the outer member 57 is made larger than the maximum outer diameter Db of the constant velocity universal joint 53, so that it can be made constant velocity with the double row rolling bearing 52. The wheel bearing device integrated with the joint 53 can pass through the knuckle N1. Furthermore, if the gap between the outer diameter Da of the fitting surface 57c and the maximum outer diameter Db of the constant velocity universal joint 53 is increased, the assembling workability can be improved, but this is not limited to the outer member 57. This increases the weight of the knuckle N1 and halves the effect of a light and compact device. Furthermore, if the sliding type constant velocity universal joint on the inboard side is a flange type as shown in FIG. 10, the outer diameter Da of the fitting surface 57c of the outer member 57 or the inner diameter 72 of the knuckle N1 is set to this value. It is extremely difficult to set a diameter larger than the flange outer diameter.

本発明は、このような事情に鑑みてなされたもので、車両への組立作業性を向上させると共に、分解・組立における部品の損傷を防止して品質を安定させたアクスルモジュールを提供することを目的としている。   The present invention has been made in view of such circumstances, and provides an axle module that improves the assembly workability to a vehicle and stabilizes the quality by preventing damage to parts during disassembly and assembly. It is aimed.

係る目的を達成すべく、本発明のうち請求項１記載の発明は、懸架装置を構成するナックルに固定される車体取付フランジを有し、内周に複列の外側転走面が形成された外方部材と、この外方部材に複数の転動体を介して回転自在に支承され、外周に車輪取付フランジと前記複列の外側転走面に対向する複列の内側転走面とが形成された内方部材とを備えた車輪用軸受、およびこの車輪用軸受に連結された外側継手部材を有するアウトボード側の等速自在継手と、この等速自在継手に一端が連結されたドライブシャフトと、このドライブシャフトの他端に連結されたインボード側の等速自在継手とからなるアクスルモジュールにおいて、前記ナックルが、前記外方部材の前記車体取付フランジを含まない部分の外径および前記アウトボード側の等速自在継手の最大外径よりも大径に形成された内径部と、外周に前記車体取付フランジを締結する取付フランジを備え、この取付フランジに前記内径部に開口する切欠きが形成されると共に、この切欠きの幅寸法が前記車体取付フランジの幅寸法よりも大きく形成され、当該切欠きに前記車体取付フランジを嵌合させた状態で、前記ナックルに車体取付フランジを固定ボルトを介して締結させた。
In order to achieve such an object, the invention according to claim 1 of the present invention has a vehicle body mounting flange fixed to a knuckle constituting a suspension device, and a double row outer rolling surface is formed on the inner periphery. An outer member and a double-row inner rolling surface that is rotatably supported by the outer member via a plurality of rolling elements and faces the outer circumferential rolling surface of the wheel mounting flange on the outer periphery are formed. Wheel bearing provided with the inner member, an outboard-side constant velocity universal joint having an outer joint member coupled to the wheel bearing, and a drive shaft having one end coupled to the constant velocity universal joint And an inboard constant velocity universal joint connected to the other end of the drive shaft, wherein the knuckle includes an outer diameter of the portion of the outer member that does not include the vehicle body mounting flange and the out Board side An inner diameter portion formed larger than the maximum outer diameter of the constant velocity universal joint and a mounting flange for fastening the vehicle body mounting flange to the outer periphery are formed, and a notch that opens to the inner diameter portion is formed in the mounting flange. In addition, the width dimension of the notch is formed larger than the width dimension of the vehicle body mounting flange, and the vehicle body mounting flange is fitted to the knuckle via a fixing bolt in a state where the vehicle body mounting flange is fitted to the notch. Concluded.

このように、ナックルに固定される車体取付フランジを有する外方部材と、駆動車輪を取り付ける車輪取付フランジを一体に有する内方部材とを備え、駆動車輪を回転自在に支承する車輪用軸受と、この車輪用軸受に連結された外側継手部材を有するアウトボード側の等速自在継手と、この等速自在継手に一端が連結されたドライブシャフトと、このドライブシャフトの他端に連結されたインボード側の等速自在継手とからなるアクスルモジュールにおいて、ナックルが、外方部材の車体取付フランジを含まない部分の外径およびアウトボード側の等速自在継手の最大外径よりも大径に形成された内径部と、外周に車体取付フランジを締結する取付フランジを備え、この取付フランジに内径部に開口する切欠きが形成されると共に、この切欠きの幅寸法が車体取付フランジの幅寸法よりも大きく形成され、当該切欠きに車体取付フランジを嵌合させた状態で、ナックルに車体取付フランジを固定ボルトを介して締結させたので、アクスルモジュールにおけるブーツ等に傷を付けることなくナックルに対してアクスルモジュールを容易に嵌挿して組み立てることができると共に、固定ボルトの締結に伴いナックルの内径部が縮径し、強固に外方部材を固定することができる。
Thus, a wheel bearing comprising an outer member having a vehicle body mounting flange fixed to the knuckle and an inner member integrally having a wheel mounting flange for mounting the driving wheel, and rotatably supporting the driving wheel, An outboard constant velocity universal joint having an outer joint member coupled to the wheel bearing, a drive shaft having one end coupled to the constant velocity universal joint, and an inboard coupled to the other end of the drive shaft In the axle module consisting of the constant velocity universal joint on the side, the knuckle is formed to have a larger diameter than the outer diameter of the outer member not including the body mounting flange and the maximum outer diameter of the constant velocity universal joint on the outboard side. A mounting flange for fastening a vehicle body mounting flange to the outer periphery, and a notch that opens to the inner diameter portion is formed in the mounting flange. The width dimension of the vehicle body mounting flange is formed larger than the width dimension of the vehicle body mounting flange, and the body mounting flange is fastened to the knuckle via the fixing bolt in a state where the body mounting flange is fitted to the notch. The axle module can be easily inserted and assembled into the knuckle without damaging the boots, etc., and the inner diameter of the knuckle is reduced with the fastening bolts to firmly fix the outer member. Can do.

また、請求項２に記載の発明は、前記切欠きの幅寸法が、前記ドライブシャフトの外径よりも大きく設定されているので、インボード側の等速自在継手を越えてナックルの切欠き内にドライブシャフトを通過させ、その後、ナックルの内径部内にアウトボード側の等速自在継手を嵌挿することができ、インボード側の等速自在継手の外側継手部材がフランジタイプであっても、あえてこのフランジをナックル内に通過させずとも容易にアクスルモジュールをナックル内に嵌挿することができる。   In the invention according to claim 2, since the width dimension of the notch is set larger than the outer diameter of the drive shaft, the inside of the constant velocity universal joint on the inboard side exceeds the inside of the knuckle notch. The drive shaft is allowed to pass through, and then the constant velocity universal joint on the outboard side can be fitted into the inner diameter portion of the knuckle, and the outer joint member of the constant velocity universal joint on the inboard side is a flange type. The axle module can be easily inserted into the knuckle without passing this flange through the knuckle.

また、前記車体取付フランジが、請求項３に記載の発明のように、前記外方部材に一体形成されていても良いし、あるいは、請求項４に記載の発明のように、前記外方部材に溶接されていても良い。   Further, the vehicle body mounting flange may be integrally formed with the outer member as in the invention described in claim 3, or the outer member as in the invention of claim 4. It may be welded to.

また、請求項５に記載の発明は、前記内方部材が、一端に車輪取付フランジを一体に有し、外周に前記複列の外側転走面に対向する複列の内側転走面のうち一方の内側転走面が形成されたハブ輪、およびこのハブ輪に内嵌され、外周に前記複列の外側転走面に対向する複列の内側転走面のうち他方の内側転走面が形成された外側継手部材とからなり、硬化した凹凸部が形成された前記ハブ輪の内径に、前記外側継手部材に一体に形成された中空状の軸部が内嵌されると共に、この軸部に形成された嵌合部を拡径させて前記凹凸部に食い込ませることにより、前記ハブ輪と外側継手部材とが一体に塑性結合されているので、軽量・コンパクト化なアクスルモジュールを達成することができると共に、車両への分解・組立性を一層簡便にすることができ、足回りのモジュール化を図ることができる。   According to a fifth aspect of the present invention, the inner member integrally has a wheel mounting flange at one end, and the outer circumferential surface of the double row facing the double row outer rolling surface on the outer periphery. A hub ring having one inner rolling surface formed therein, and the other inner rolling surface of the double row inner rolling surfaces that are fitted in the hub wheel and face the outer circumferential surface of the double row on the outer periphery. A hollow shaft portion formed integrally with the outer joint member is fitted inside the inner diameter of the hub wheel formed with the hardened uneven portion. The hub ring and the outer joint member are integrally plastically joined by expanding the diameter of the fitting portion formed in the portion so as to bite into the uneven portion, thereby achieving a lightweight and compact axle module. Can be easily disassembled and assembled into a vehicle. Can, it is possible to modularize the underbody.

本発明に係るアクスルモジュールは、懸架装置を構成するナックルに固定される車体取付フランジを有し、内周に複列の外側転走面が形成された外方部材と、この外方部材に複数の転動体を介して回転自在に支承され、外周に車輪取付フランジと前記複列の外側転走面に対向する複列の内側転走面とが形成された内方部材とを備えた車輪用軸受、およびこの車輪用軸受に連結された外側継手部材を有するアウトボード側の等速自在継手と、この等速自在継手に一端が連結されたドライブシャフトと、このドライブシャフトの他端に連結されたインボード側の等速自在継手とからなるアクスルモジュールにおいて、前記ナックルが、前記外方部材の前記車体取付フランジを含まない部分の外径および前記アウトボード側の等速自在継手の最大外径よりも大径に形成された内径部と、外周に前記車体取付フランジを締結する取付フランジを備え、この取付フランジに前記内径部に開口する切欠きが形成されると共に、この切欠きの幅寸法が前記車体取付フランジの幅寸法よりも大きく形成され、当該切欠きに前記車体取付フランジを嵌合させた状態で、前記ナックルに車体取付フランジを固定ボルトを介して締結させたので、アクスルモジュールにおいけるブーツ等に傷を付けることなくナックルに対してアクスルモジュールを容易に嵌挿して組み立てることができると共に、固定ボルトの締結に伴いナックルの内径部が縮径し、強固に外方部材を固定することができる。
An axle module according to the present invention has a vehicle body mounting flange fixed to a knuckle constituting a suspension device, an outer member having a double row outer raceway formed on the inner periphery, and a plurality of outer members on the outer member. And an inner member having a wheel mounting flange and an inner rolling surface of a double row facing the outer rolling surface of the double row formed on an outer periphery thereof. A constant velocity universal joint on the outboard side having a bearing and an outer joint member connected to the wheel bearing; a drive shaft having one end connected to the constant velocity universal joint; and a second end connected to the other end of the drive shaft. in the axle module comprising a constant velocity universal joint on the inboard side, the knuckles, the maximum outer outer diameter and the outboard side constant velocity universal joint of the portion not including the vehicle body fitting flange of the outer member And a mounting flange for fastening the vehicle body mounting flange to the outer periphery, a notch that opens to the inner diameter portion is formed in the mounting flange, and the width dimension of the notch Is formed larger than the width dimension of the vehicle body mounting flange, and the vehicle body mounting flange is fastened to the knuckle via a fixing bolt in a state where the vehicle body mounting flange is fitted to the notch. The axle module can be easily inserted and assembled to the knuckle without damaging the boots that can be inserted, and the inner diameter of the knuckle is reduced as the fixing bolt is tightened to firmly fix the outer member. can do.

懸架装置を構成するナックルに固定される車体取付フランジを有し、内周に複列の外側転走面が形成された外方部材と、一端に車輪取付フランジを一体に有し、外周に前記複列の外側転走面に対向する複列の内側転走面のうち一方の内側転走面と、内周に硬化した凹凸部が形成されたハブ輪、およびこのハブ輪に内嵌され、外周に前記複列の外側転走面に対向する複列の内側転走面のうち他方の内側転走面と中空状の軸部が一体に形成された等速自在継手の外側継手部材とからなる内方部材と、前記両転走面間に転動自在に収容された複列の転動体とを備え、前記外側継手部材の軸部が前記ハブ輪に内嵌されると共に、この軸部に形成された嵌合部を拡径させて前記凹凸部に食い込ませることにより、前記ハブ輪と外側継手部材とが一体に塑性結合されている車輪用軸受、およびこの車輪用軸受に連結されたアウトボード側の等速自在継手と、この等速自在継手に一端が連結されたドライブシャフトと、このドライブシャフトの他端に連結されたインボード側の等速自在継手とからなり、前記ナックルが、前記外方部材の前記車体取付フランジを含まない部分の外径および前記アウトボード側の等速自在継手の最大外径よりも大径に形成された内径部と、外周に前記車体取付フランジを締結する取付フランジを備え、この取付フランジに前記内径部に開口する切欠きが形成されると共に、この切欠きの幅寸法が前記車体取付フランジの幅寸法および前記ドライブシャフトの外径よりも大きく形成され、当該切欠きに前記車体取付フランジを嵌合させた状態で、前記ナックルに車体取付フランジを固定ボルトを介して締結させた。 A vehicle body mounting flange fixed to a knuckle constituting a suspension device, an outer member having a double row outer rolling surface formed on the inner periphery, and a wheel mounting flange integrally formed at one end, One inner rolling surface of the double row inner rolling surfaces facing the outer rolling surface of the double row, and a hub wheel formed with an uneven portion hardened on the inner periphery, and the hub wheel is internally fitted, From the outer joint member of the constant velocity universal joint in which the other inner rolling surface of the double row inner rolling surface facing the outer rolling surface of the double row and the hollow shaft portion are integrally formed on the outer periphery. An inner member and a double row rolling element housed so as to roll between the rolling surfaces, and the shaft portion of the outer joint member is fitted into the hub wheel, and the shaft portion. The hub ring and the outer joint member are integrally plasticized by expanding the diameter of the fitting portion formed in Connected wheel bearings, a constant velocity universal joint connected to the wheel bearings, a drive shaft having one end connected to the constant velocity universal joint, and connected to the other end of the drive shaft A constant velocity universal joint on the inboard side, wherein the knuckle is larger than an outer diameter of a portion of the outer member not including the vehicle body mounting flange and a maximum outer diameter of the constant velocity universal joint on the outboard side. An inner diameter portion formed to have a large diameter and a mounting flange for fastening the vehicle body mounting flange to the outer periphery, and a notch that opens to the inner diameter portion is formed in the mounting flange, and the width dimension of the notch is The vehicle body mounting flange is formed to be larger than the width dimension of the vehicle body mounting flange and the outer diameter of the drive shaft, and the vehicle body is attached to the knuckle with the vehicle body mounting flange fitted to the notch. The flange is engaged via the fixing bolt.

以下、本発明の実施の形態を図面に基づいて詳細に説明する。
図１は、本発明に係るアクスルモジュールの第１の実施形態を示す縦断面図、図２は、図１の要部拡大図である。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing a first embodiment of an axle module according to the present invention, and FIG. 2 is an enlarged view of a main part of FIG.

このアクスルモジュールは、エンジンから車輪へ動力を伝達すると共に、自動車の車輪を懸架装置に対して回転自在に支承するものである。なお、このアクスルモジュールの基本構成は、車輪用軸受と、この車輪用軸受と一体に結合された等速自在継手３およびこの等速自在継手３とドライブシャフトＤ／Ｓを介して連結された摺動型の等速自在継手２２とからなる。   The axle module transmits power from the engine to the wheels, and rotatably supports the wheels of the automobile with respect to the suspension device. The basic configuration of the axle module is that the wheel bearing, the constant velocity universal joint 3 integrally coupled to the wheel bearing, and the slide connected to the constant velocity universal joint 3 via the drive shaft D / S. And a dynamic constant velocity universal joint 22.

車輪用軸受装置は、ハブ輪１と複列の転がり軸受２と等速自在継手３とをユニット化して構成され第４世代と呼称されている。ハブ輪１は、Ｓ５３Ｃ等の炭素０．４０〜０．８０ｗｔ％を含む中炭素鋼で形成され、アウトボード側の端部に車輪（図示せず）を取り付けるための車輪取付フランジ４を一体に有し、その円周等配位置にハブボルト６が植設されている。ハブ輪１の内周面には凹凸部５が形成され、熱処理によって表面硬さを５４〜６４ＨＲＣの範囲に硬化層が形成されている。熱処理としては、局部加熱ができ、硬化層深さの設定が比較的容易にできる高周波誘導加熱による焼入れが好適である。   The wheel bearing device is configured by unitizing the hub wheel 1, the double row rolling bearing 2, and the constant velocity universal joint 3, and is called a fourth generation. The hub wheel 1 is made of medium carbon steel containing 0.40 to 0.80 wt% of carbon such as S53C, and a wheel mounting flange 4 for mounting a wheel (not shown) to the end on the outboard side is integrated. And hub bolts 6 are implanted at equal circumferential positions. Concave and convex portions 5 are formed on the inner peripheral surface of the hub wheel 1, and a hardened layer is formed with a surface hardness in the range of 54 to 64 HRC by heat treatment. As the heat treatment, local heating is preferable, and quenching by high-frequency induction heating that can set the hardened layer depth relatively easily is preferable.

なお、凹凸部５はアヤメローレット状に形成され、旋削等により独立して形成された複数の環状溝と、ブローチ加工等により形成された複数の軸方向溝とを略直交させて構成した交叉溝、あるいは、互いに傾斜した螺旋溝で構成した交叉溝からなる。また、凹凸部５の凸部は良好な食い込み性を確保するために、その先端部が三角形状等の尖塔形状に形成されている。   In addition, the uneven part 5 is formed in the shape of an iris knurl, and a cross groove formed by a plurality of annular grooves formed independently by turning or the like and a plurality of axial grooves formed by broaching or the like substantially orthogonal to each other. Alternatively, it consists of a cross groove composed of spiral grooves inclined with respect to each other. Further, in order to ensure good biting property, the tip of the concavo-convex portion 5 is formed in a spire shape such as a triangular shape.

複列の転がり軸受２は、外方部材７と内方部材８と複列の転動体（ボール）９、９とを備えている。外方部材７は、Ｓ５３Ｃ等の炭素０．４０〜０．８０ｗｔ％を含む中炭素鋼からなり、内周に複列の外側転走面７ａ、７ａが形成されている。また、外周には懸架装置を構成する後述するナックル（図示せず）に取り付けるための車体取付フランジ７ｂ、７ｃがレーザービーム溶接等で一体に接合されている。なお、これらの車体取付フランジ７ｂ、７ｃは、鍛造および切削加工によって外方部材７に一体形成しても良い。   The double-row rolling bearing 2 includes an outer member 7, an inner member 8, and double-row rolling elements (balls) 9 and 9. The outer member 7 is made of medium carbon steel containing 0.40 to 0.80 wt% of carbon such as S53C, and double rows of outer rolling surfaces 7a and 7a are formed on the inner periphery. Further, vehicle body mounting flanges 7b and 7c for mounting on a knuckle (not shown), which will be described later, constituting the suspension device are integrally joined to the outer periphery by laser beam welding or the like. The vehicle body mounting flanges 7b and 7c may be integrally formed with the outer member 7 by forging and cutting.

一方、内方部材８は、ハブ輪１と、このハブ輪１の小径段部１３に突合せ状態に内嵌された後述する外側継手部材１４とを指し、外方部材７の外側転走面７ａ、７ａに対向するアウトボード側の内側転走面１ａがハブ輪１の外周に、またインボード側の内側転走面１４ａが外側継手部材１４の外周にそれぞれ形成されている。複列の転動体９、９がこれら転走面７ａ、１ａと７ａ、１４ａ間にそれぞれ収容され、保持器１０、１０で転動自在に保持されている。また、複列の転がり軸受２の端部にはシール１１、１２が装着され、軸受内部に封入された潤滑グリースの漏洩と、外部からの雨水やダスト等が軸受内部に侵入するのを防止している。   On the other hand, the inner member 8 refers to the hub wheel 1 and an outer joint member 14 to be described later fitted in a small diameter step portion 13 of the hub wheel 1, and the outer rolling surface 7 a of the outer member 7. , 7a is formed on the outer periphery of the hub wheel 1, and the inboard-side inner rolling surface 14a is formed on the outer periphery of the outer joint member 14, respectively. Double-row rolling elements 9 and 9 are accommodated between the rolling surfaces 7a and 1a and 7a and 14a, respectively, and are held by the cages 10 and 10 so as to be freely rollable. In addition, seals 11 and 12 are attached to the ends of the double row rolling bearing 2 to prevent leakage of lubricating grease sealed inside the bearing and intrusion of rainwater and dust from the outside into the bearing. ing.

等速自在継手３は、外側継手部材１４と継手内輪１５とケージ１６およびトルク伝達ボール１７とを備えている。外側継手部材１４は、Ｓ５３Ｃ等の炭素０．４０〜０．８０ｗｔ％を含む中炭素鋼で形成され、カップ状のマウス部１８と、このマウス部１８の底部をなす肩部１９と、この肩部１９から軸方向に延びる中空の軸部２０を有している。この軸部２０の外周には、前記小径段部１３に内嵌される小径段部２０ａと、この小径段部２０ａから軸方向に延びる嵌合部２０ｂが形成されている。マウス部１８の開口側の外周には樹脂製のブーツ２１が装着され、マウス部１８内に封入されたグリースの漏洩と、外部から雨水やダスト等が継手内に侵入するのを防止している。   The constant velocity universal joint 3 includes an outer joint member 14, a joint inner ring 15, a cage 16 and a torque transmission ball 17. The outer joint member 14 is formed of medium carbon steel containing carbon of 0.40 to 0.80 wt% such as S53C, and has a cup-shaped mouth portion 18, a shoulder portion 19 that forms the bottom portion of the mouth portion 18, and the shoulder portion. A hollow shaft portion 20 extending in the axial direction from the portion 19 is provided. On the outer periphery of the shaft portion 20, there are formed a small diameter step portion 20a fitted into the small diameter step portion 13 and a fitting portion 20b extending in the axial direction from the small diameter step portion 20a. A resin boot 21 is mounted on the outer periphery of the mouth portion 18 on the opening side to prevent leakage of grease sealed in the mouse portion 18 and intrusion of rainwater or dust from the outside into the joint. .

また、マウス部１８の内周には軸方向に延びる曲線状の８本のトラック溝１８ａが形成されると共に、このトラック溝１８ａに対向する８本のトラック溝１５ａが継手内輪１５の外周に形成されている。そして、これら両トラック溝１８ａ、１５ａ間にトルク伝達ボール１７が収容されている。この外側継手部材１４において、トラック溝１８ａと肩部１９および軸部２０の表面に高周波焼入れ等によって所定の硬化層が形成されている。   In addition, eight curved track grooves 18 a extending in the axial direction are formed on the inner periphery of the mouse portion 18, and eight track grooves 15 a facing the track grooves 18 a are formed on the outer periphery of the joint inner ring 15. Has been. A torque transmission ball 17 is accommodated between the track grooves 18a and 15a. In the outer joint member 14, a predetermined hardened layer is formed on the surfaces of the track groove 18 a, the shoulder portion 19, and the shaft portion 20 by induction hardening or the like.

なお、ここでは、８個ボールを有するコンパクトタイプの等速自在継手３を例示したが、これに限らず、一般的な６個ボールからなる等速自在継手であっても良い。さらに、等速自在継手３は固定型であれば良く、トラック溝が例示した曲線状のものに限らず、一部直線部を有するトラック溝からなる、所謂アンダーカットフリータイプの等速自在継手であっても良い。   Here, the compact type constant velocity universal joint 3 having eight balls is illustrated, but the present invention is not limited to this, and a general constant velocity universal joint composed of six balls may be used. Furthermore, the constant velocity universal joint 3 may be a fixed type, and is not limited to the curved shape exemplified by the track groove. There may be.

そして、外側継手部材１４の軸部２０をハブ輪１に内嵌すると共に、中空の軸部２０にマンドレル等の拡径治具を押し込んで嵌合部２０ｂを拡径し、この嵌合部２０ｂをハブ輪１の凹凸部５に食い込ませて加締め、ハブ輪１と外側継手部材１４とが一体に塑性結合されている。これにより、従来のようにナット等で強固に緊締して予圧量を管理する必要がないため、軽量・コンパクト化を図ることができると共に、ハブ輪１の強度・耐久性を向上させ、かつ長期間その予圧量を維持することができる。さらに、車両への組込性を簡便にすることができるという特徴を有している。   Then, the shaft portion 20 of the outer joint member 14 is fitted into the hub wheel 1, and the fitting portion 20 b is expanded by pushing a diameter expanding jig such as a mandrel into the hollow shaft portion 20. The hub wheel 1 and the outer joint member 14 are integrally plastically bonded by biting into the uneven portion 5 of the hub wheel 1 and caulking. As a result, it is not necessary to control the preload by tightening firmly with a nut or the like as in the prior art, so that the weight and size can be reduced and the strength and durability of the hub wheel 1 can be improved and long. The amount of preload can be maintained for a period. Furthermore, it has the feature that it can be easily incorporated into a vehicle.

ハブ輪１の外周において、アウトボード側のシール１１のシールリップが摺接するシールランド部、内側転走面１ａ、および小径段部１３の表面には高周波焼入れによって硬化層が形成されている。また、拡径される嵌合部２０ｂは、鍛造後の素材表面硬さ２４ＨＲＣ以下の未焼入れ部とし、前記ハブ輪１の凹凸部５の表面硬さ５４〜６４ＨＲＣとの硬度差を３０ＨＲＣ以上に設定するのが好ましい。これにより、嵌合部２０ｂが凹凸部５に容易にかつ深く食い込み、凹凸部５の先端が潰れることなく強固に両者を塑性結合することができる。   On the outer periphery of the hub wheel 1, a hardened layer is formed by induction hardening on the surfaces of the seal land portion, the inner rolling surface 1a, and the small-diameter step portion 13 with which the seal lip of the seal 11 on the outboard side slides. Further, the fitting portion 20b to be expanded is an unquenched portion having a material surface hardness of 24 HRC or less after forging, and the hardness difference between the surface hardness 54 to 64 HRC of the uneven portion 5 of the hub wheel 1 is set to 30 HRC or more. It is preferable to set. Thereby, the fitting part 20b can bite into the uneven part 5 easily and deeply, and both can be firmly plastically bonded without collapsing the tip of the uneven part 5.

図１に示すように、ドライブシャフトＤ／Ｓの一端は、この等速自在継手３の継手内輪１５にセレーション１５ｂを介して内嵌され、他端はディファレンシャル（図示せず）に固定される摺動型の等速自在継手２２に連結されている。このインボード側の等速自在継手２２は、外側継手部材２３と、外周部に３本の脚軸２４ａが等配に突設されたトリポード部材２４と、これらの脚軸２４ａに針状ころ２５を介して回転自在に外挿されたローラ２６とを備えている。   As shown in FIG. 1, one end of the drive shaft D / S is fitted into a joint inner ring 15 of the constant velocity universal joint 3 via a serration 15b, and the other end is slidably fixed to a differential (not shown). It is connected to a dynamic type constant velocity universal joint 22. The constant velocity universal joint 22 on the inboard side includes an outer joint member 23, a tripod member 24 having three leg shafts 24a projecting from the outer periphery thereof at equal intervals, and needle rollers 25 on these leg shafts 24a. , And a roller 26 that is rotatably inserted through the roller.

外側継手部材２３は、Ｓ５３Ｃ等の炭素０．４０〜０．８０ｗｔ％を含む中炭素鋼で形成された円筒状の外筒部２７と、この外筒部２７の底部から軸方向に延びる中空の軸部２８を一体に有している。軸部２８の内周にはディファレンシャル（図示せず）に固定するためのセレーション（またはスプライン）２８ａが形成されている。なお、外筒部２７は円筒状に限らず、例えば、外周がトラック溝２７ａに対応した花形形状に形成されたものであっても良く、また、軸部２８に限らず、ディファレンシャルに固定するための取付フランジが一体に形成されていても良い。   The outer joint member 23 includes a cylindrical outer cylinder portion 27 made of medium carbon steel containing carbon 0.40 to 0.80 wt% such as S53C, and a hollow extending in the axial direction from the bottom portion of the outer cylinder portion 27. The shaft portion 28 is integrally provided. A serration (or spline) 28 a for fixing to a differential (not shown) is formed on the inner periphery of the shaft portion 28. In addition, the outer cylinder part 27 is not limited to a cylindrical shape, and for example, the outer periphery may be formed in a flower shape corresponding to the track groove 27a. The mounting flange may be integrally formed.

外筒部２７の内周には軸方向に延びる直線状の３本のトラック溝２７ａが形成され、このトラック溝２７ａ上をローラ２６が転動する。外側継手部材２３において、トラック溝２７ａの表面に高周波焼入れ等によって所定の硬化層が形成されている。また、外筒部２７の開口側の外周には合成ゴム等からなるブーツ２９が装着され、外筒部２７内に封入されたグリースの漏洩と、外部から雨水やダスト等が継手内に侵入するのを防止している。なお、ここでは、インボード側の等速自在継手２２にトリポード型を例示したが、これに限らず、摺動型の等速自在継手なら良く、他の構造のトリポード型をはじめ、例えば、ボールを使用したダブルオフセット型の等速自在継手（ＤＯＪ）であっても良い。   Three linear track grooves 27a extending in the axial direction are formed on the inner periphery of the outer cylindrical portion 27, and the roller 26 rolls on the track grooves 27a. In the outer joint member 23, a predetermined hardened layer is formed on the surface of the track groove 27a by induction hardening or the like. Further, a boot 29 made of synthetic rubber or the like is attached to the outer periphery of the outer cylinder portion 27 on the opening side, and leakage of grease sealed in the outer cylinder portion 27 and rainwater, dust, etc. enter the joint from the outside. Is preventing. Here, the tripod type is exemplified for the constant velocity universal joint 22 on the inboard side. However, the present invention is not limited to this, and a sliding type constant velocity universal joint may be used. It may be a double offset type constant velocity universal joint (DOJ) using

図３は懸架装置を構成するナックルＮの一部断面正面図、図４は、図３のＩＶ−ＩＶ線に沿った縦断面図である。
ナックルＮは可鍛鋳鉄等の鉄系金属からなり、外周に外方部材７の車体取付フランジ７ｃを締結する取付フランジ３０と、車体に固定される固定フランジ３１と、ステアリングアーム（図示せず）に連結されるナックルアーム３２が突設されている。３３、３４はブレーキキャリパ（図示せず）を取り付けるための取付孔、３５は外方部材７の車体取付フランジ７ｂを締結するボルト孔、３２ａはステアリングアームを連結するためのピン孔である。 3 is a partial cross-sectional front view of the knuckle N constituting the suspension device, and FIG. 4 is a vertical cross-sectional view taken along line IV-IV in FIG.
The knuckle N is made of a ferrous metal such as malleable cast iron, and has a mounting flange 30 that fastens a vehicle body mounting flange 7c of the outer member 7 on the outer periphery, a fixing flange 31 that is fixed to the vehicle body, and a steering arm (not shown). A knuckle arm 32 connected to is projected. Reference numerals 33 and 34 are mounting holes for mounting a brake caliper (not shown), 35 is a bolt hole for fastening the vehicle body mounting flange 7b of the outer member 7, and 32a is a pin hole for connecting the steering arm.

取付フランジ３０には外方部材７の車体取付フランジ７ｃを締結するためのボルト孔３０ａが穿設されると共に、ナックルＮの内径部３６に開口する切欠き３７が形成されている。この切欠き３７の幅寸法Ｗは、図１に示すドライブシャフトＤ／Ｓの外径ｄおよび後述する車体取付フランジ７ｃの幅寸法Ｗ１よりも僅かに大きく形成されている（Ｗ＞ｄ、Ｗ＞Ｗ１）。また、ナックルＮの内径部３６の直径Ｄｎは外方部材７の外径Ｄａおよび等速自在継手３の最大外径Ｄｂより大径に形成され、外方部材７および等速自在継手３が容易に嵌挿できるようになっている。なお、車体取付フランジ７ｃにナックルＮを支持するボールジョイントの取付部３９が一体形成されている（図１参照）。   A bolt hole 30 a for fastening the vehicle body mounting flange 7 c of the outer member 7 is formed in the mounting flange 30, and a notch 37 that opens to the inner diameter portion 36 of the knuckle N is formed. The width dimension W of the notch 37 is slightly larger than the outer diameter d of the drive shaft D / S shown in FIG. 1 and the width dimension W1 of a vehicle body mounting flange 7c described later (W> d, W>). W1). Further, the diameter Dn of the inner diameter portion 36 of the knuckle N is formed to be larger than the outer diameter Da of the outer member 7 and the maximum outer diameter Db of the constant velocity universal joint 3, so that the outer member 7 and the constant velocity universal joint 3 can be easily formed. It can be inserted into. A ball joint mounting portion 39 for supporting the knuckle N is integrally formed with the vehicle body mounting flange 7c (see FIG. 1).

次にアクスルモジュールの組立方法を図５乃至図８を用いて説明する。本実施形態に係るアクスルモジュールは、等速自在継手３を構成する外側継手部材１４が一体に結合された車輪用軸受と等速自在継手３、およびこの等速自在継手３とドライブシャフトＤ／Ｓを介して連結された摺動型の等速自在継手２２とを備えている。   Next, a method for assembling the axle module will be described with reference to FIGS. The axle module according to this embodiment includes a wheel bearing, a constant velocity universal joint 3, and a constant velocity universal joint 3 and a drive shaft D / S, to which an outer joint member 14 constituting the constant velocity universal joint 3 is integrally coupled. And a sliding-type constant velocity universal joint 22 connected through the.

図５に示すように、アクスルモジュールをナックルＮ内に嵌挿する場合、ナックルＮの内径部３６内にインボード側の等速自在継手２２を先端にして順次アクスルモジュールを嵌挿していく。ここで、図６に示すように、インボード側の等速自在継手２２を越えてナックルＮの切欠き３７内にドライブシャフトＤ／Ｓを通過させ、その後、図７に示すように、ナックルＮの内径部３６内にアウトボード側の等速自在継手３を嵌挿するようにしても良い。この方法により、等速自在継手２２の外側継手部材２３がフランジタイプであっても容易にアクスルモジュールをナックルＮ内に嵌挿することができる。また、ナックルＮの内径部３６の直径Ｄｎを等速自在継手３の最大外径、ここではブーツ外径Ｄｂよりも大径に形成するだけでよく、この実施形態のようにバンド加締部３８が突出していても切欠き３７によってバンド加締部３８がナックルＮに干渉することなく容易にアクスルモジュールをナックルＮに嵌挿することができる。   As shown in FIG. 5, when inserting the axle module into the knuckle N, the axle modules are sequentially inserted into the inner diameter portion 36 of the knuckle N with the constant velocity universal joint 22 on the inboard side as the tip. Here, as shown in FIG. 6, the drive shaft D / S is passed through the notch 37 of the knuckle N beyond the constant velocity universal joint 22 on the inboard side, and then, as shown in FIG. The constant velocity universal joint 3 on the outboard side may be inserted into the inner diameter portion 36 of the inner board 36. By this method, the axle module can be easily inserted into the knuckle N even if the outer joint member 23 of the constant velocity universal joint 22 is a flange type. Further, the diameter Dn of the inner diameter portion 36 of the knuckle N only needs to be formed larger than the maximum outer diameter of the constant velocity universal joint 3, here the boot outer diameter Db, and the band caulking portion 38 as in this embodiment. The axle module can be easily fitted and inserted into the knuckle N without the band caulking portion 38 interfering with the knuckle N by the notch 37 even if it protrudes.

図８は最終の組立工程を示し、図９は図８のＩＸ−ＩＸ矢視図である。
ナックルＮにおける取付フランジ３０の切欠き３７に車体取付フランジ７ｃを嵌合した状態でナックルＮの内径部３６に外方部材７を嵌挿した後、ボルト孔３０ａに嵌挿される固定ボルト（図示せず）によって車体取付フランジ７ｃを締結する。これにより、ナックルＮの内径部３６が縮径し、単一の固定ボルトであっても強固に外方部材７を固定することができる。 FIG. 8 shows the final assembly process, and FIG. 9 is a view taken along arrow IX-IX in FIG.
A fixing bolt (not shown) is inserted into the bolt hole 30a after the outer member 7 is inserted into the inner diameter portion 36 of the knuckle N with the vehicle body mounting flange 7c fitted in the notch 37 of the mounting flange 30 in the knuckle N. To fasten the vehicle body mounting flange 7c. As a result, the inner diameter portion 36 of the knuckle N is reduced in diameter, and the outer member 7 can be firmly fixed even with a single fixing bolt.

本実施形態では、ナックルＮの内径部３６の直径Ｄｎが外方部材７の外径Ｄａおよび等速自在継手３の最大外径Ｄｂよりも大径に形成されると共に、取付フランジ３０に切欠き３７が形成され、この切欠き３７の幅寸法Ｗが、ドライブシャフトＤ／Ｓの外径ｄおよび外方部材７の車体取付フランジ７ｃの幅寸法Ｗ１よりも大きく設定されているので、アクスルモジュールにおけるブーツ２１、２９に傷を付けることなくナックルＮに対してアクスルモジュールを容易に嵌挿して組み立てることができる。   In the present embodiment, the diameter Dn of the inner diameter portion 36 of the knuckle N is formed larger than the outer diameter Da of the outer member 7 and the maximum outer diameter Db of the constant velocity universal joint 3, and the mounting flange 30 is notched. 37 is formed, and the width dimension W of the notch 37 is set to be larger than the outer diameter d of the drive shaft D / S and the width dimension W1 of the vehicle body mounting flange 7c of the outer member 7. The axle module can be easily inserted and assembled to the knuckle N without damaging the boots 21 and 29.

なお、本実施形態では、車輪用軸受装置が、ハブ輪１と複列の転がり軸受２と等速自在継手３をユニット化して構成した第４世代構造を例示したが、本発明に係るアクスルモジュールは足回りのモジュール化を実現するものであるから、車輪用軸受装置の構造に拘わらず、例えば、等速自在継手がセレーション等を介して着脱可能に連結されるような第２あるいは第３世代構造の車輪用軸受装置であっても良い。この場合、予め車輪用軸受装置とアウトボード側の等速自在継手３、さらにはドライブシャフトＤ／Ｓとインボード側の等速自在継手２２をモジュール化した後、懸架装置への組付けが可能となる。   In the present embodiment, the wheel bearing device is exemplified by the fourth generation structure in which the hub wheel 1, the double row rolling bearing 2 and the constant velocity universal joint 3 are unitized. However, the axle module according to the present invention is illustrated. Is to realize modularization of the undercarriage. For example, the second or third generation in which a constant velocity universal joint is detachably connected via a serration or the like regardless of the structure of the wheel bearing device. A wheel bearing device having a structure may be used. In this case, the wheel bearing device and the constant velocity universal joint 3 on the outboard side, and further the drive shaft D / S and the constant velocity universal joint 22 on the inboard side can be modularized and then assembled to the suspension device. It becomes.

以上、本発明の実施の形態について説明を行ったが、本発明はこうした実施の形態に何等限定されるものではなく、あくまで例示であって、本発明の要旨を逸脱しない範囲内において、さらに種々なる形態で実施し得ることは勿論のことであり、本発明の範囲は、特許請求の範囲の記載によって示され、さらに特許請求の範囲に記載の均等の意味、および範囲内のすべての変更を含む。   The embodiment of the present invention has been described above, but the present invention is not limited to such an embodiment, and is merely an example, and various modifications can be made without departing from the scope of the present invention. Of course, the scope of the present invention is indicated by the description of the scope of claims, and further, the equivalent meanings described in the scope of claims and all modifications within the scope of the scope of the present invention are included. Including.

本発明に係るアクスルモジュールは、自動車等の動力伝達装置を構成するドライブシャフト、およびこれに連結された等速自在継手を備え、等速自在継手およびこの等速自在継手に連結される車輪用軸受の構造・仕様に拘わらず、あらゆる動力伝達装置におけるアクスルモジュールに適用することができる。   An axle module according to the present invention includes a drive shaft constituting a power transmission device for an automobile or the like, and a constant velocity universal joint connected thereto, and a constant velocity universal joint and a wheel bearing connected to the constant velocity universal joint. Regardless of the structure and specifications, it can be applied to an axle module in any power transmission device.

本発明に係るアクスルモジュールの第１の実施形態を示す縦断面図である。1 is a longitudinal sectional view showing a first embodiment of an axle module according to the present invention. 図１の要部拡大図である。It is a principal part enlarged view of FIG. 本発明に係るナックルを示す一部断面正面図である。It is a partial cross section front view which shows the knuckle which concerns on this invention. 図３のＩＶ−ＩＶ線に沿った縦断面図である。FIG. 4 is a longitudinal sectional view taken along line IV-IV in FIG. 3. 本発明に係るアクスルモジュールの組立の第１工程を示す縦断面図である。It is a longitudinal cross-sectional view which shows the 1st process of the assembly of the axle module which concerns on this invention. 同上、他の第１工程を示す縦断面図である。It is a longitudinal cross-sectional view which shows another 1st process same as the above. 本発明に係るアクスルモジュールの組立の第２工程を示す縦断面図である。It is a longitudinal cross-sectional view which shows the 2nd process of the assembly of the axle module which concerns on this invention. 本発明に係るアクスルモジュールの組立の最終工程を示す縦断面図である。It is a longitudinal cross-sectional view which shows the last process of the assembly of the axle module which concerns on this invention. 図８のＩＸ−ＩＸ矢視図である。It is the IX-IX arrow directional view of FIG. 車輪用軸受装置を組込んだ動力伝達装置の一例を示す縦断面図である。It is a longitudinal cross-sectional view which shows an example of the power transmission device incorporating the wheel bearing apparatus. 従来の車輪用軸受装置を示す縦断面図である。It is a longitudinal cross-sectional view which shows the conventional wheel bearing apparatus.

符号の説明Explanation of symbols

１・・・・・・・・・・・・・・・・ハブ輪
１ａ、１４ａ・・・・・・・・・・・内側転走面
２・・・・・・・・・・・・・・・・複列の転がり軸受
３、２２・・・・・・・・・・・・・等速自在継手
４・・・・・・・・・・・・・・・・車輪取付フランジ
５・・・・・・・・・・・・・・・・凹凸部
６・・・・・・・・・・・・・・・・ハブボルト
７・・・・・・・・・・・・・・・・外方部材
７ａ・・・・・・・・・・・・・・・外側転走面
７ｂ、７ｃ・・・・・・・・・・・・車体取付フランジ
８・・・・・・・・・・・・・・・・内方部材
９・・・・・・・・・・・・・・・・転動体
１０・・・・・・・・・・・・・・・保持器
１１、１２・・・・・・・・・・・・シール
１３、２０ａ・・・・・・・・・・・小径段部
１４、２３・・・・・・・・・・・・外側継手部材
１５・・・・・・・・・・・・・・・継手内輪
１５ａ、１８ａ・・・・・・・・・・トラック溝
１５ｂ、２８ａ・・・・・・・・・・セレーション
１６・・・・・・・・・・・・・・・ケージ
１７・・・・・・・・・・・・・・・トルク伝達ボール
１８・・・・・・・・・・・・・・・マウス部
１９・・・・・・・・・・・・・・・肩部
２０、２８・・・・・・・・・・・・軸部
２０ｂ・・・・・・・・・・・・・・嵌合部
２１、２９・・・・・・・・・・・・ブーツ
２４・・・・・・・・・・・・・・・トリポード部材
２４ａ・・・・・・・・・・・・・・脚軸
２５・・・・・・・・・・・・・・・針状ころ
２６・・・・・・・・・・・・・・・ローラ
２７・・・・・・・・・・・・・・・外筒部
３０・・・・・・・・・・・・・・・取付フランジ
３０ａ、３５・・・・・・・・・・・ボルト孔
３１・・・・・・・・・・・・・・・固定フランジ
３２・・・・・・・・・・・・・・・ナックルアーム
３２ａ・・・・・・・・・・・・・・ピン孔
３３、３４・・・・・・・・・・・・取付孔
３６・・・・・・・・・・・・・・・内径部
３７・・・・・・・・・・・・・・・切欠き
３８・・・・・・・・・・・・・・・バンド加締部
３９・・・・・・・・・・・・・・・取付部
５１・・・・・・・・・・・・・・・ハブ輪
５１ａ、６４ａ・・・・・・・・・・内側転走面
５２・・・・・・・・・・・・・・・複列の転がり軸受
５３・・・・・・・・・・・・・・・等速自在継手
５４・・・・・・・・・・・・・・・車輪取付フランジ
５５・・・・・・・・・・・・・・・凹凸部
５６・・・・・・・・・・・・・・・ハブボルト
５７・・・・・・・・・・・・・・・外方部材
５７ａ・・・・・・・・・・・・・・外側転走面
５７ｂ・・・・・・・・・・・・・・車体取付フランジ
５７ｃ・・・・・・・・・・・・・・嵌合面
５８・・・・・・・・・・・・・・・内方部材
５９・・・・・・・・・・・・・・・ボール
６０・・・・・・・・・・・・・・・保持器
６１、６２・・・・・・・・・・・・シール
６３、７０ａ・・・・・・・・・・・小径段部
６４・・・・・・・・・・・・・・・外側継手部材
６５・・・・・・・・・・・・・・・継手内輪
６６・・・・・・・・・・・・・・・ケージ
６７・・・・・・・・・・・・・・・トルク伝達ボール
６８・・・・・・・・・・・・・・・マウス部
６９・・・・・・・・・・・・・・・肩部
７０・・・・・・・・・・・・・・・軸部
７０ｂ・・・・・・・・・・・・・・嵌合部
７１・・・・・・・・・・・・・・・ブーツ
７２・・・・・・・・・・・・・・・内径
１００・・・・・・・・・・・・・・ドライブシャフト
１０１・・・・・・・・・・・・・・摺動型等速自在継手
１０２・・・・・・・・・・・・・・ディファレンシャル
１０３・・・・・・・・・・・・・・固定型等速自在継手
１０４・・・・・・・・・・・・・・車輪用軸受装置
１０５・・・・・・・・・・・・・・車輪
１０６・・・・・・・・・・・・・・車輪用軸受
ｄ・・・・・・・・・・・・・・・・ドライブシャフトの外径
Ｄａ・・・・・・・・・・・・・・・外方部材の嵌合面の外径
Ｄｎ・・・・・・・・・・・・・・・ナックルの内径
Ｄ／Ｓ・・・・・・・・・・・・・・ドライブシャフト
Ｎ、Ｎ１・・・・・・・・・・・・・ナックル
Ｗ・・・・・・・・・・・・・・・・切欠きの幅寸法
Ｗ１・・・・・・・・・・・・・・・車体取付フランジの幅寸法 1 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Hub wheel 1a, 14a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Inner rolling surface 2 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・.... Double-row rolling bearings 3, 22 ... Constant velocity universal joint 4 ... Wheel mounting flange 5 ······························· 6 ... Outside member 7a ... Outer rolling surface 7b, 7c ... Car body mounting flange 8 ...・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Inner member 9 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Rolling body 10 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Holding 11, 12... Seal 13, 20 a... Small diameter step 14, 23. Outer joint member 15 ... Joint inner ring 15a, 18a ... Track grooves 15b, 28a ... Serration 16 ... Cage 17 ... Torque transmission ball 18 ...・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Mouse part 19 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Shoulder part 20, 28 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Shaft part 20b ···················· Fitting portion 21, 29 ····························································· Member 24a ... Leg shaft 25 ... Needle roller 26 ... ... Roller 27 ... Outer cylinder 30・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Mounting flanges 30a, 35 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Bolt hole 31 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Flange 32 ... Knuckle arm 32a ... Pin holes 33, 34 ... Mounting hole 36 ... Inner diameter part 37 ... Notch 38 ...・ ・ ・ ・ Band caulking part 39 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Mounting part 51 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Hub wheels 51a, 64a ... .... Inner rolling surface 52 ... Double row rolling bearing 53 ... Constant speed Universal joint 54 ... Wheel mounting flange 55 ... ····················································································· ... outside rolling surface 57b ... body mounting flange 57c ... Mating surface 58 ... Inner member 59 ... Ball 60 ... ··········· Retainer 61, 62 ···········································································・ ・ ・ ・ ・ ・ Outer joint member 65 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Inner ring 66 ・ ・ ・ ・ ・ ・ Cage 67 ・ ・ ・ ・ ・ ・... Torque transmission ball 68 ... Mau 69 ... shoulder 70 ... shaft 70b ...・ ・ Fitting part 71 ・ ・ ・ ・ ・ ・ Boot 72 ・ ・ ・ ・ ・ ・ Inner diameter 100 ・ ・ ・ ・ ・ ・·········· Drive shaft 101 ····································································································· ·································································· Wheel bearing device 105 106 ··········· Wheel bearing d ·············· Diameter of drive shaft Da・ ・ ・ ・ ・ ・ Outer diameter Dn of fitting surface of outer member ・ ・ ・ ・ ・ ・ ・ ・.... Knuckle inner diameter D / S ... Drive shaft N, N1 ... Knuckle W ... ············ Notch width W1 ································· Body width flange

Claims (5)

懸架装置を構成するナックルに固定される車体取付フランジを有し、内周に複列の外側転走面が形成された外方部材と、
この外方部材に複数の転動体を介して回転自在に支承され、外周に車輪取付フランジと前記複列の外側転走面に対向する複列の内側転走面とが形成された内方部材とを備えた車輪用軸受、
およびこの車輪用軸受に連結された外側継手部材を有するアウトボード側の等速自在継手と、
この等速自在継手に一端が連結されたドライブシャフトと、
このドライブシャフトの他端に連結されたインボード側の等速自在継手とからなるアクスルモジュールにおいて、
前記ナックルが、前記外方部材の前記車体取付フランジを含まない部分の外径および前記アウトボード側の等速自在継手の最大外径よりも大径に形成された内径部と、外周に前記車体取付フランジを締結する取付フランジを備え、この取付フランジに前記内径部に開口する切欠きが形成されると共に、この切欠きの幅寸法が前記車体取付フランジの幅寸法よりも大きく形成され、当該切欠きに前記車体取付フランジを嵌合させた状態で、前記ナックルに車体取付フランジを固定ボルトを介して締結させたことを特徴とするアクスルモジュール。 An outer member having a vehicle body mounting flange fixed to a knuckle that constitutes the suspension device, and an outer circumferential surface of a double row formed on the inner periphery;
An inner member that is rotatably supported by the outer member via a plurality of rolling elements, and that has a wheel mounting flange and a double row inner rolling surface that faces the outer rolling surface of the double row on the outer periphery. Wheel bearing with,
And an outboard-side constant velocity universal joint having an outer joint member coupled to the wheel bearing;
A drive shaft having one end connected to the constant velocity universal joint;
In the axle module consisting of the constant velocity universal joint on the inboard side connected to the other end of this drive shaft,
The knuckle has an outer diameter that is larger than an outer diameter of a portion of the outer member that does not include the vehicle body mounting flange and a maximum outer diameter of the constant velocity universal joint on the outboard side; A mounting flange for fastening the mounting flange is provided, and a notch opening in the inner diameter portion is formed in the mounting flange, and the width dimension of the notch is formed larger than the width dimension of the vehicle body mounting flange. An axle module, wherein the vehicle body mounting flange is fastened to the knuckle via a fixing bolt in a state where the vehicle body mounting flange is fitted in a notch. 前記切欠きの幅寸法が、前記ドライブシャフトの外径よりも大きく設定されている請求項１に記載のアクスルモジュール。   The axle module according to claim 1, wherein a width dimension of the notch is set to be larger than an outer diameter of the drive shaft. 前記車体取付フランジが前記外方部材に一体形成されている請求項１または２に記載のアクスルモジュール。   The axle module according to claim 1 or 2, wherein the vehicle body mounting flange is integrally formed with the outer member. 前記車体取付フランジが外方部材に溶接されている請求項１または２に記載のアクスルモジュール。   The axle module according to claim 1 or 2, wherein the vehicle body mounting flange is welded to an outer member. 前記内方部材が、一端に車輪取付フランジを一体に有し、外周に前記複列の外側転走面に対向する複列の内側転走面のうち一方の内側転走面が形成されたハブ輪、およびこのハブ輪に内嵌され、外周に前記複列の外側転走面に対向する複列の内側転走面のうち他方の内側転走面が形成された外側継手部材とからなり、硬化した凹凸部が形成された前記ハブ輪の内径に、前記外側継手部材に一体に形成された中空状の軸部が内嵌されると共に、この軸部に形成された嵌合部を拡径させて前記凹凸部に食い込ませることにより、前記ハブ輪と外側継手部材とが一体に塑性結合されている請求項１乃至４いずれかに記載のアクスルモジュール。
The hub in which the inner member has a wheel mounting flange integrally at one end, and one inner rolling surface of the double row inner rolling surfaces facing the double row outer rolling surface is formed on the outer periphery. An outer joint member that is internally fitted to the wheel and the hub wheel, and is formed with the other inner rolling surface among the inner rolling surfaces of the double row facing the outer rolling surface of the double row on the outer periphery, A hollow shaft portion integrally formed with the outer joint member is fitted into the inner diameter of the hub wheel formed with the hardened uneven portion, and the fitting portion formed on the shaft portion is expanded in diameter. The axle module according to any one of claims 1 to 4, wherein the hub wheel and the outer joint member are integrally plastically joined by being bitten into the uneven portion.
JP2004186250A 2004-06-24 2004-06-24 Axle module Expired - Fee Related JP4587205B2 (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007187175A (en) * 2006-01-11 2007-07-26 Ntn Corp Bearing device for wheel and axle module equipped with the same
US8083598B2 (en) 2006-07-11 2011-12-27 Ntn Corporation Bearing device for wheel
JP2008018767A (en) * 2006-07-11 2008-01-31 Ntn Corp Drive shaft assembly
JP6136302B2 (en) 2013-01-29 2017-05-31 スズキ株式会社 Steering knuckle structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001001709A (en) * 1999-06-21 2001-01-09 Ntn Corp Axle bearing
JP2001171308A (en) * 1999-12-15 2001-06-26 Ntn Corp Bearing device for driving wheel
JP2001304285A (en) * 2000-04-20 2001-10-31 Ntn Corp Constant velocity universal joint and bearing system for wheel using it
JP2002172911A (en) * 2000-12-06 2002-06-18 Koyo Seiko Co Ltd Hub unit for vehicle
JP2004155411A (en) * 2002-09-10 2004-06-03 Ntn Corp Bearing device for wheel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001001709A (en) * 1999-06-21 2001-01-09 Ntn Corp Axle bearing
JP2001171308A (en) * 1999-12-15 2001-06-26 Ntn Corp Bearing device for driving wheel
JP2001304285A (en) * 2000-04-20 2001-10-31 Ntn Corp Constant velocity universal joint and bearing system for wheel using it
JP2002172911A (en) * 2000-12-06 2002-06-18 Koyo Seiko Co Ltd Hub unit for vehicle
JP2004155411A (en) * 2002-09-10 2004-06-03 Ntn Corp Bearing device for wheel

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