JP4919161B2 - Wheel support device - Google Patents

Wheel support device Download PDF

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JP4919161B2
JP4919161B2 JP2007099622A JP2007099622A JP4919161B2 JP 4919161 B2 JP4919161 B2 JP 4919161B2 JP 2007099622 A JP2007099622 A JP 2007099622A JP 2007099622 A JP2007099622 A JP 2007099622A JP 4919161 B2 JP4919161 B2 JP 4919161B2
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axle shaft
ring
inner ring
engaging portion
creep
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JP2008256116A (en
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達規 森
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JTEKT 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
    • F16C19/185—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 two raceways provided integrally on a part other than a race ring, e.g. a shaft or 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
    • 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
    • F16C35/063—Fixing them on the shaft
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wheel support device in which creep is not susceptible of occurrence in a bearing. <P>SOLUTION: A pair of cutout groove part 17 is formed to an outer peripheral surface of an inner ring 9 on a vehicular inner side, so that the cutout groove parts are formed obliquely with respect to an axis 1a of an axile shaft 1, and a pair of recess parts 18 are formed to an outer circumferential surface of the axile shaft 1. An outer projection piece 19 of a ring plate 5 interposed between the inner ring 9 and a retainer ring 7 is folded to an inner ring 9 side, and the outer projection pieces 19 are disposed in the cutout groove parts 17, so that the inner ring 9 is engaged with the ring plate 5. An inner projection piece 22 of the ring plate is embedded into a recess part 18 of the axile shaft 1 to engage the ring plate 5 with the axile shaft 1. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

本発明は、車両の車輪支持装置に関するものである。   The present invention relates to a vehicle wheel support device.

車両（例えば、自動車）の駆動輪側に使用されるアクスル構造として、「半浮動式（ハーフフローティング）の車輪支持装置」と称されるものがある（特許文献１，２を参照）。この形式の車輪支持装置は軽量であることから、乗用車等の小型車両に対して多く使用されている。半浮動式の車輪支持装置では、端部にホイール取付部が設けられたアクスルシャフトが、軸受を介してアクスルハウジングに収容されている。そして、このアクスルシャフトによって、ホイールに動力が伝達される。   As an axle structure used on the drive wheel side of a vehicle (for example, an automobile), there is one called a “half-floating type wheel support device” (see Patent Documents 1 and 2). Since this type of wheel support device is lightweight, it is often used for small vehicles such as passenger cars. In the semi-floating type wheel support device, an axle shaft having a wheel attachment portion at an end is accommodated in an axle housing via a bearing. The power is transmitted to the wheel by the axle shaft.

半浮動式の車輪支持装置の軸受は、アクスルシャフトの外周面に圧入されることにより、回止めが図られている。しかし、半浮動式の車輪支持装置は、その構造上、軸力が小さいため、旋回重力が低くても軸受にクリープが発生し易い。ここで、軸受におけるクリープとは、「回転荷重の場合、内輪の軌道面とアクスルシャフトの外周面とのはめあい面にすきまを生じたとき、はめあい面の内側の面が外側の面に対して相対的に内輪回転荷重の回転方向と逆方向にずれる現象（広義には、回転方向に関係なく、はめあい面において駆動側が相手側に対して駆動方向に滑るものも含む）」をいう。これにより、軸受の軌道面が剥離したり、異音や振動が発生したりするおそれがある。   The bearings of the semi-floating wheel support device are pressed against the outer peripheral surface of the axle shaft to prevent rotation. However, since the semi-floating type wheel support device has a small axial force due to its structure, creep is likely to occur in the bearing even if the turning gravity is low. Here, the creep in the bearing is “in the case of rotational load, when a clearance is generated in the fitting surface between the raceway surface of the inner ring and the outer peripheral surface of the axle shaft, the inner surface of the fitting surface is relative to the outer surface. In particular, it means a phenomenon that shifts in the direction opposite to the rotation direction of the inner ring rotational load (in a broad sense, including a case where the driving side slips in the driving direction relative to the other side on the fitting surface regardless of the rotation direction). As a result, the raceway surface of the bearing may be peeled off or abnormal noise or vibration may occur.

また、近時の車両では、アンチロックブレーキの採用により、車輪の回転数の検出は、軸受の内輪に取り付けられたセンサ（例えば、エンコーダ）によって行なわれている。軸受にクリープが発生すると、車輪の回転数の検出精度が低下してしまうおそれがある。
特開平４−１１３９０２号公報 実開平５−６０９０５号公報 In recent vehicles, the anti-lock brake is used to detect the rotational speed of the wheel by a sensor (for example, an encoder) attached to the inner ring of the bearing. If creep occurs in the bearing, the detection accuracy of the rotational speed of the wheel may be reduced.
Japanese Patent Laid-Open No. 4-113902 Japanese Utility Model Publication No. 5-60905

本発明は、上記した不具合に鑑み、軸受にクリープが発生しにくい車輪支持装置を提供することを課題としている。   In view of the above-described problems, an object of the present invention is to provide a wheel support device in which creep is unlikely to occur in a bearing.

課題を解決するための手段及び発明の効果Means for Solving the Problems and Effects of the Invention

上記の課題を解決するために、本発明の車輪支持装置は、
駆動力を車両アウタ側の先端部に取り付けられた車輪に伝達するためのアクスルシャフトをアクスルハウジングで支持するために、前記アクスルハウジングに固定される取付用フランジ部と、前記取付用フランジ部と前記アクスルシャフトとの間に介装される軸受とを含む軸受ユニットを備える半浮動式の車輪支持装置であって、
前記軸受ユニットの内部には、前記軸受の内輪と、前記アクスルシャフトに対して前記内輪よりも車両インナ側に嵌合装着される筒状のリテーナリングとの間に配置され、前記内輪と一体回転するために、第１の係合手段を介して前記内輪と係合されると共に、アキシャル方向に所定の厚みを有するリング状であって、前記アクスルシャフトと一体回転するために、第２の係合手段を介して前記アクスルシャフトと係合されるクリープ防止部材を備え、
前記第１の係合手段は、前記内輪の車両インナ側の端面に形成された内輪側係合部と、前記車両インナ側の端面と平行状又は交差状に対向配置されるクリープ防止部材の第１係合部とを有していて、
前記第２の係合手段は、前記アクスルシャフトの外周面に形成されたアクスルシャフト側係合部と、前記アクスルシャフトの外周面と対向配置されるクリープ防止部材の第２係合部とを有していて、
前記クリープ防止部材は、前記内輪と前記リテーナリングとの間に介装されるリング板であり、
前記第１係合部は、前記クリープ防止部材の外周面からラジアル方向の外側に向かって突出し、前記内輪側係合部としての切欠部に係合されるように折り曲げられる外側突出片であり、
前記第２係合部は、前記クリープ防止部材の内周面からラジアル方向の内側に向かって突出し、前記アクスルシャフト側係合部としての凹部に係合されるように折り曲げられる内側突出片であり、
前記内側突出片は、斜めに折り曲げられることによって前記リング板が前記アクスルシャフトに嵌合可能とされ、かつ前記内輪の車両インナ側の端面と前記リング板の車両アウタ側の端面とが当接した状態で前記アクスルシャフトの凹部に没入されるように折り曲げ返されることを特徴とする。
また、上記の課題を解決するために、本発明の別の車輪支持装置は、
駆動力を車両アウタ側の先端部に取り付けられた車輪に伝達するためのアクスルシャフトをアクスルハウジングで支持するために、前記アクスルハウジングに固定される取付用フランジ部と、前記取付用フランジ部と前記アクスルシャフトとの間に介装される軸受とを含む軸受ユニットを備える半浮動式の車輪支持装置であって、
前記軸受ユニットの内部には、前記軸受の内輪と、前記アクスルシャフトに対して前記内輪よりも車両インナ側に嵌合装着される筒状のリテーナリングとの間に配置され、前記内輪と一体回転するために、第１の係合手段を介して前記内輪と係合されると共に、アキシャル方向に所定の厚みを有するリング状であって、前記アクスルシャフトと一体回転するために、第２の係合手段を介して前記アクスルシャフトと係合されるクリープ防止部材を備え、
前記第１の係合手段は、前記内輪の車両インナ側の端面に形成された内輪側係合部と、前記車両インナ側の端面と平行状又は交差状に対向配置されるクリープ防止部材の第１係合部とを有していて、
前記第２の係合手段は、前記アクスルシャフトの外周面に形成されたアクスルシャフト側係合部と、前記アクスルシャフトの外周面と対向配置されるクリープ防止部材の第２係合部とを有していて、
前記クリープ防止部材は、前記内輪と前記リテーナリングとの間に介装されるリング板であり、
前記第１係合部は、前記クリープ防止部材の外周面からラジアル方向の外側に向かって突出し、前記内輪側係合部としての切欠部に係合されるように折り曲げられる外側突出片であり、
前記第２係合部は、前記クリープ防止部材の内周面からラジアル方向の内側に向かって突出し、前記アクスルシャフト側係合部としての凹部に係合されるように折り曲げられる内側突出片であり、
前記内側突出片は、リテーナリングに押圧されることによって折り曲げ返されることを特徴とする。 In order to solve the above-described problems, the wheel support device of the present invention includes:
In order to support the axle shaft for transmitting the driving force to the wheel attached to the front end portion of the vehicle outer side with the axle housing, the mounting flange portion fixed to the axle housing, the mounting flange portion, A semi-floating wheel support device comprising a bearing unit including a bearing interposed between an axle shaft and
The bearing unit is disposed between the inner ring of the bearing and a cylindrical retainer ring that is fitted and mounted on the axle shaft closer to the vehicle inner side than the inner ring, and rotates integrally with the inner ring. Therefore, the second engagement member is engaged with the inner ring through the first engagement means and has a ring shape having a predetermined thickness in the axial direction, and rotates in unison with the axle shaft. An anti-creep member engaged with the axle shaft via a coupling means;
The first engagement means includes an inner ring side engagement portion formed on an end surface of the inner ring on the vehicle inner side, and a first anti-creep member disposed opposite to the end surface on the vehicle inner side in a parallel or intersecting manner. One engaging portion,
The second engaging means includes an axle shaft side engaging portion formed on the outer peripheral surface of the axle shaft, and a second engaging portion of a creep preventing member disposed to face the outer peripheral surface of the axle shaft. And
The creep prevention member is a ring plate interposed between the inner ring and the retainer ring,
The first engaging portion is an outer protruding piece that protrudes outward in the radial direction from the outer peripheral surface of the creep preventing member and is bent so as to be engaged with a notch portion as the inner ring side engaging portion,
The second engaging portion is an inner protruding piece that protrudes inward in the radial direction from the inner peripheral surface of the creep preventing member and is bent so as to be engaged with a concave portion as the axle shaft engaging portion. ,
The inner projecting piece is bent obliquely so that the ring plate can be fitted to the axle shaft, and the end surface of the inner ring on the vehicle inner side and the end surface of the ring plate on the vehicle outer side are in contact with each other. It is bent back so as to be immersed in the recess of the axle shaft in a state .
Moreover, in order to solve said subject, another wheel support apparatus of this invention is the following.
In order to support the axle shaft for transmitting the driving force to the wheel attached to the front end portion of the vehicle outer side with the axle housing, the mounting flange portion fixed to the axle housing, the mounting flange portion, A semi-floating wheel support device comprising a bearing unit including a bearing interposed between an axle shaft and
The bearing unit is disposed between the inner ring of the bearing and a cylindrical retainer ring that is fitted and mounted on the axle shaft closer to the vehicle inner side than the inner ring, and rotates integrally with the inner ring. Therefore, the second engagement member is engaged with the inner ring through the first engagement means and has a ring shape having a predetermined thickness in the axial direction, and rotates in unison with the axle shaft. An anti-creep member engaged with the axle shaft via a coupling means;
The first engagement means includes an inner ring side engagement portion formed on an end surface of the inner ring on the vehicle inner side, and a first anti-creep member disposed opposite to the end surface on the vehicle inner side in a parallel or intersecting manner. One engaging portion,
The second engaging means includes an axle shaft side engaging portion formed on the outer peripheral surface of the axle shaft, and a second engaging portion of a creep preventing member disposed to face the outer peripheral surface of the axle shaft. And
The creep prevention member is a ring plate interposed between the inner ring and the retainer ring,
The first engaging portion is an outer protruding piece that protrudes outward in the radial direction from the outer peripheral surface of the creep preventing member and is bent so as to be engaged with a notch portion as the inner ring side engaging portion,
The second engaging portion is an inner protruding piece that protrudes inward in the radial direction from the inner peripheral surface of the creep preventing member and is bent so as to be engaged with a concave portion as the axle shaft engaging portion. ,
The inner protruding piece is bent back when pressed by a retainer ring.

本発明に係る車輪支持装置は、第１の係合手段を介して軸受の内輪と係合されると共に、第２の係合手段を介してアクスルシャフトと係合されるリング状のクリープ防止部材を備えている。そして、第１の係合手段は内輪側係合部と第１係合部とを有していて、第２の係合手段はアクスルシャフト側係合部と第２係合部とを有していて、クリープ防止部材は、第１及び第２の係合手段を介して内輪とアクスルシャフトとを連結する。このため、軸受の内輪とアクスルシャフトとの接触面積を低下させることなく、前記クリープ防止部材を介して内輪とアクスルシャフトとが連結される。この結果、内輪とアクスルシャフトとの間のクリープを、より確実に防止することができ、クリープによる内輪の軌道面の剥離等の損傷や、異音や振動の発生が防止される。また、クリープ防止部材の設計も簡単になる。   A wheel support device according to the present invention is engaged with an inner ring of a bearing via a first engagement means and is engaged with an axle shaft via a second engagement means. It has. The first engaging means has an inner ring side engaging portion and a first engaging portion, and the second engaging means has an axle shaft side engaging portion and a second engaging portion. The creep preventing member connects the inner ring and the axle shaft via the first and second engaging means. Therefore, the inner ring and the axle shaft are connected via the creep preventing member without reducing the contact area between the inner ring of the bearing and the axle shaft. As a result, creep between the inner ring and the axle shaft can be more reliably prevented, and damage such as peeling of the raceway surface of the inner ring due to creep, and generation of abnormal noise and vibration can be prevented. In addition, the design of the creep preventing member is simplified.

具体的には、前記クリープ防止部材は、前記内輪と前記リテーナリングとの間に介装されるリング板であり、
前記第１係合部は、前記クリープ防止部材の外周面からラジアル方向の外側に向かって突出し、前記内輪の車両インナ側の外周面に形成された切欠部に係合されるように折り曲げられる外側突出片であり、
前記第２係合部は、前記クリープ防止部材の内周面からラジアル方向の内側に向かって突出し、前記アクスルシャフトの外周面に形成された凹部に係合されるように折り曲げられる内側突出片である。 Specifically, the creep prevention member is a ring plate interposed between the inner ring and the retainer ring,
The first engaging portion protrudes outward in the radial direction from the outer peripheral surface of the creep preventing member, and is bent outward so as to be engaged with a notch portion formed on the outer peripheral surface of the inner ring on the vehicle inner side. A protruding piece,
The second engaging portion is an inner protruding piece that protrudes inward in the radial direction from the inner peripheral surface of the creep preventing member and is bent so as to be engaged with a recess formed in the outer peripheral surface of the axle shaft. is there.

クリープ防止部材がリング板であるため、その厚みが薄くなると共に、その構成が簡単なものとなる。   Since the creep preventing member is a ring plate, its thickness is reduced and its configuration is simplified.

前記内側突出片は、斜めに折り曲げられることによって前記リング板が前記アクスルシャフトに嵌合可能とされ、かつ前記内輪の車両インナ側の端面と前記リング板の車両アウタ側の端面とが当接した状態で前記アクスルシャフトの凹部に没入されるように折り曲げ返される。   The inner projecting piece is bent obliquely so that the ring plate can be fitted to the axle shaft, and the end surface of the inner ring on the vehicle inner side and the end surface of the ring plate on the vehicle outer side are in contact with each other. In the state, it is bent back so as to be immersed in the recess of the axle shaft.

予め、内側突出片を斜めに折り曲げておくことにより、そのままの状態でリング板をアクスルシャフトに嵌合させることができるため、車輪支持装置の組付けが容易である。   Since the ring plate can be fitted to the axle shaft as it is by bending the inner projecting piece obliquely in advance, the assembly of the wheel support device is easy.

また、内側突出片を、リテーナリングに押圧されることによって折り曲げたり、折り曲げ返したりさせることもできる。   Further, the inner projecting piece can be bent or folded back by being pressed by the retainer ring.

これにより、リテーナリングをアクスルシャフトに嵌合させるだけで、内側突出片を折り曲げたり、折り曲げ返したりすることができるため、内側突出片をアクスルシャフトの凹部に没入させる作業が極めて容易となる。   Thus, the inner projecting piece can be bent or folded back simply by fitting the retainer ring to the axle shaft, so that the operation of immersing the inner projecting piece into the recess of the axle shaft becomes extremely easy.

本発明の実施例を説明する。図１は本発明の実施例の車輪支持装置１００の正面断面図、図２の（ａ）は図１の要部の拡大図であり、（ｂ）はコニカルワッシャ６とリテーナリング７を分離した状態を示す図、図３の（ａ）は図１のＸ矢視図であり、（ｂ）は（ａ）のＹ−Ｙ線断面図、図４の（ａ）はリング板５の断面図、（ｂ）は同じく正面図である。   Examples of the present invention will be described. FIG. 1 is a front sectional view of a wheel support device 100 according to an embodiment of the present invention, FIG. 2 (a) is an enlarged view of the main part of FIG. 1, and (b) is a separation of a conical washer 6 and a retainer ring 7. 3A is a cross-sectional view taken along the line Y-Y of FIG. 4A, and FIG. 4A is a cross-sectional view of the ring plate 5. FIG. (B) is a front view of the same.

本発明の本実施例の車輪支持装置１００について説明する。図１に示されるように、本実施例の車輪支持装置１００は、駆動力を車両アウタ側の先端部に取り付けられた車輪（図示せず）に伝達するためのアクスルシャフト１をアクスルハウジング２で支持するために、アクスルハウジング２に固定される取付用フランジ部３と、この取付用フランジ部３とアクスルシャフト１との間に介装される複列の軸受４とを含む軸受ユニット２００を備えている。アクスルシャフト１の車両アウタ側の先端部は、ラジアル方向の外側に向かって延設されていて、当該延設部分にホイール取付部が設けられている。本実施例の車輪支持装置１００では、アクスルシャフト１に装着された軸受４の車両インナ側に、軸受４のクリープを防止するためのクリープ防止部材（リング板５）、コニカルワッシャ６及びリテーナリング７がこの順で嵌合されている。リテーナリング７は、コニカルワッシャ６をアキシャル方向に押しつぶして圧縮変形させた状態で、アクスルシャフト１に圧入されている。   A wheel support device 100 according to this embodiment of the present invention will be described. As shown in FIG. 1, the wheel support device 100 according to the present embodiment includes an axle housing 2 that transmits an axle shaft 1 for transmitting a driving force to a wheel (not shown) attached to a front end portion of the vehicle outer side. In order to support, a bearing unit 200 including a mounting flange portion 3 fixed to the axle housing 2 and a double row bearing 4 interposed between the mounting flange portion 3 and the axle shaft 1 is provided. ing. The front end portion of the axle shaft 1 on the vehicle outer side extends toward the outside in the radial direction, and a wheel mounting portion is provided in the extended portion. In the wheel support device 100 of the present embodiment, a creep preventing member (ring plate 5), a conical washer 6 and a retainer ring 7 for preventing creep of the bearing 4 are provided on the vehicle inner side of the bearing 4 mounted on the axle shaft 1. Are fitted in this order. The retainer ring 7 is press-fitted into the axle shaft 1 in a state in which the conical washer 6 is crushed in the axial direction to be compressed and deformed.

軸受４について説明する。図１に示されるように、本実施例の車輪支持装置１００の軸受４は複列アンギュラ玉軸受であり、アクスルシャフト１の外周面に圧入されることにより、アクスルシャフト１と一体に回転される一対の内輪（車両アウタ側の内輪８と車両インナ側の内輪９）と、取付用フランジ部３を介してアクスルハウジング２に固定される外輪１１と、一対の内輪８，９と外輪１１との間に介装される複数個の転動体（玉１２）とを備えている。各内輪８，９は、連続状態で接合される大径部と小径部とから成り、両者の接合部分に玉１２を転動させる内輪軌道面１３，１４が設けられている。内輪８の大径部側の端面８ａ（車両アウタ側の端面）は、アクスルシャフト１のホイール取付部の下端部に当接されている。また、各内輪８，９の小径部側の端面８ｂ，９ａは、突き合わされた状態で対向配置されている。同様に、外輪１１の内周面には外輪軌道面１５が形成されている。そして、複数個の玉１１は、保持器１６によって保持されている。図１及び図２の（ａ）に示されるように、車両インナ側に配置される内輪９の車両インナ側の端面９ｂの外周縁部には、所定長さ（後述するリング板５の一対の外側突出片１９の幅よりも大きい長さ）の幅を有する一対の切欠溝部１７が、アクスルシャフト１の軸線１ａを中心に対称形状で斜めに設けられている。   The bearing 4 will be described. As shown in FIG. 1, the bearing 4 of the wheel support device 100 of this embodiment is a double-row angular contact ball bearing, and is rotated integrally with the axle shaft 1 by being press-fitted into the outer peripheral surface of the axle shaft 1. A pair of inner rings (an inner ring 8 on the vehicle outer side and an inner ring 9 on the vehicle inner side), an outer ring 11 fixed to the axle housing 2 via the mounting flange 3, and a pair of inner rings 8, 9 and the outer ring 11 And a plurality of rolling elements (balls 12) interposed therebetween. Each inner ring 8, 9 is composed of a large diameter portion and a small diameter portion that are joined in a continuous state, and inner ring raceway surfaces 13, 14 for rolling the balls 12 are provided at the joint portions of both. An end surface 8 a (end surface on the vehicle outer side) of the inner ring 8 on the large diameter portion side is in contact with a lower end portion of the wheel mounting portion of the axle shaft 1. Further, the end faces 8b, 9a on the small diameter side of the inner rings 8, 9 are opposed to each other in a state of being abutted. Similarly, an outer ring raceway surface 15 is formed on the inner peripheral surface of the outer ring 11. The plurality of balls 11 are held by a cage 16. As shown in FIG. 1 and FIG. 2 (a), a predetermined length (a pair of ring plates 5 to be described later) is formed on the outer peripheral edge of the end surface 9b on the vehicle inner side of the inner ring 9 arranged on the vehicle inner side. A pair of notch groove portions 17 having a width (a length larger than the width of the outer protruding piece 19) are provided obliquely and symmetrically about the axis 1 a of the axle shaft 1.

アクスルシャフト１について説明する。図１ないし図３に示されるように、アクスルシャフト１における車両インナ側の内輪９の端面９ｂの近傍には、一対の凹部１８が、アクスルシャフト１の軸線１ａを中心に対称形状で設けられている。   The axle shaft 1 will be described. As shown in FIGS. 1 to 3, a pair of recesses 18 are provided symmetrically about the axis 1 a of the axle shaft 1 in the vicinity of the end surface 9 b of the inner ring 9 on the vehicle inner side of the axle shaft 1. Yes.

リング板５について説明する。このリング板５は、金属板より成る。図４に示されるように、リング板５の外周面には、ラジアル方向の外側に向かって突出する一対の外側突出片１９が、アクスルシャフト１の軸線１ａを中心に対称形状で設けられている。また、各外側突出片１９の直下にはラジアル方向に沿って一対の切れ目２１が設けられていて、一対の切れ目２１どうしの間に、ラジアル方向の内側に向かって突出する各内側突出片２２が設けられている。リング板５がアクスルシャフト１に嵌合された状態で、各内側突出片２２の先端部は、対応するアクスルシャフト１の凹部１８に没入される。   The ring plate 5 will be described. The ring plate 5 is made of a metal plate. As shown in FIG. 4, a pair of outer projecting pieces 19 projecting outward in the radial direction are provided on the outer peripheral surface of the ring plate 5 in a symmetrical shape with the axis 1 a of the axle shaft 1 as the center. . A pair of cuts 21 are provided in the radial direction immediately below each outer protruding piece 19, and each inner protruding piece 22 protruding inward in the radial direction is provided between the pair of cuts 21. Is provided. In a state in which the ring plate 5 is fitted to the axle shaft 1, the distal end portion of each inner protruding piece 22 is immersed in the concave portion 18 of the corresponding axle shaft 1.

本実施例の車輪支持装置１００において、リング板５をアクスルシャフト１に嵌合させるときの作用を説明する。図２の（ｂ）に示されるように、アクスルシャフト１に内輪８，９が圧入される。内輪９における車両インナ側の端面９ｂは、アクスルシャフト１の外周面に形成された一対の凹部１８の直上に配置される。また、この状態で、内輪９の一対の切欠部１７が、アクスルシャフト１の凹部１８の直上に配置されるように圧入される。アクスルシャフト１に、リング板５が嵌合される。図３の（ａ），（ｂ）に示されるように、リング板５は、折り曲げられた一対の内側突出片２２の先端部が車両インナ側に配置されるようにして嵌合される。リング板５の内径は、アクスルシャフト１の外径よりも大きく、一対の内側突出片２２は、予め斜めに折り曲げられているため、アクスルシャフト１に嵌合させたリング板５を、アキシャル方向に容易に移動させることができる。   In the wheel support device 100 of the present embodiment, the operation when the ring plate 5 is fitted to the axle shaft 1 will be described. As shown in FIG. 2B, the inner rings 8 and 9 are press-fitted into the axle shaft 1. An end surface 9 b on the inner side of the inner ring 9 is disposed immediately above the pair of recesses 18 formed on the outer peripheral surface of the axle shaft 1. Further, in this state, the pair of notches 17 of the inner ring 9 are press-fitted so as to be disposed immediately above the recess 18 of the axle shaft 1. A ring plate 5 is fitted to the axle shaft 1. As shown in FIGS. 3A and 3B, the ring plate 5 is fitted so that the tip ends of the pair of bent inner projecting pieces 22 are arranged on the vehicle inner side. Since the inner diameter of the ring plate 5 is larger than the outer diameter of the axle shaft 1 and the pair of inner projecting pieces 22 are bent obliquely in advance, the ring plate 5 fitted to the axle shaft 1 is moved in the axial direction. It can be moved easily.

内輪９の車両インナ側の端面９ｂの近傍まで嵌合されたリング板５は、アクスルシャフト１の軸線１ａを中心に回転され、リング板５の一対の外側突出片１９が、内輪９の切欠部１７と対向して配置される。この状態で、リング板５の一対の内側突出片２２は、アクスルシャフト１の各凹部１８の直上に配置される。一対の外側突出片１９が車両アウタ側に折り曲げられ、内輪９の切欠部１７に入り込む。各外側突出片１９の両側面部は、内輪９の切欠部１７の内壁面と僅かな隙間を介して配置される。これにより、リング板５と内輪９とが係合状態で配置される。リング板５の内径は、アクスルシャフト１の外径よりも大きいため、リング板５を回転させて一対の外側突出片１９を、内輪９の各切欠部１７と対向配置させる作業が容易である。   The ring plate 5 fitted to the vicinity of the end surface 9b on the vehicle inner side of the inner ring 9 is rotated around the axis 1a of the axle shaft 1, and the pair of outer projecting pieces 19 of the ring plate 5 are notched in the inner ring 9. 17 is arranged to face. In this state, the pair of inner protruding pieces 22 of the ring plate 5 are disposed immediately above the respective recesses 18 of the axle shaft 1. The pair of outer projecting pieces 19 are bent toward the vehicle outer side and enter the notch 17 of the inner ring 9. Both side surface portions of each outer protruding piece 19 are arranged with a slight gap from the inner wall surface of the notch portion 17 of the inner ring 9. Thereby, the ring plate 5 and the inner ring 9 are arranged in an engaged state. Since the inner diameter of the ring plate 5 is larger than the outer diameter of the axle shaft 1, it is easy to rotate the ring plate 5 so that the pair of outer projecting pieces 19 are arranged to face the notches 17 of the inner ring 9.

続いて、アクスルシャフト１にコニカルワッシャ６が嵌合されると共に、リテーナリング７が圧入される。リテーナリング７が、コニカルワッシャ６を押圧して圧縮変形させる。このとき、リテーナリング７は、コニカルワッシャ６を介してリング板５の一対の内側突出片２２を押圧する。これにより、一対の内側突出片２２が折り曲げ返されて、対応するアクスルシャフト１の凹部１８に没入される。その状態を図２の（ａ）に示す。一対の外側突出片１９と同様に、各内側突出片２２の両側面部は、アクスルシャフト１の凹部１８の内壁面と僅かな隙間を介して配置される。これにより、リング板５とアクスルシャフト１とが係合状態で配置される。   Subsequently, the conical washer 6 is fitted to the axle shaft 1 and the retainer ring 7 is press-fitted. The retainer ring 7 presses the conical washer 6 to compress and deform it. At this time, the retainer ring 7 presses the pair of inner protruding pieces 22 of the ring plate 5 via the conical washer 6. As a result, the pair of inner projecting pieces 22 are folded back and immersed in the recesses 18 of the corresponding axle shaft 1. The state is shown in FIG. Similar to the pair of outer projecting pieces 19, both side surface portions of each inner projecting piece 22 are arranged with a slight gap from the inner wall surface of the recess 18 of the axle shaft 1. Thereby, the ring plate 5 and the axle shaft 1 are arranged in an engaged state.

車両インナ側の内輪９に大きな荷重が作用して、アクスルシャフト１に対して内輪９が回動しようとしても（換言すれば、アクスルシャフト１と内輪９との間でクリープが発生しようとしても）、内輪９には、コニカルワッシャ６及びリテーナリング７による軸力が作用している。しかも、内輪９の一対の切欠溝部１７には、リング板５の各外側突出片１９が入り込んでいる。そして、リング板５の一対の内側突出片２２が、対応するアクスルシャフト１の凹部１８に入り込んでいて、リング板５が内輪９と連れ回りすることが抑止される。これにより、内輪９の回動がリング部材７によって阻止され、クリープの発生が防止される。この結果、内輪９の内輪軌道面１４が剥離したり、異音や振動が発生したりことを防止できる。   Even if a large load acts on the inner ring 9 on the vehicle inner side and the inner ring 9 tries to rotate with respect to the axle shaft 1 (in other words, even if creep occurs between the axle shaft 1 and the inner ring 9). The axial force of the conical washer 6 and the retainer ring 7 acts on the inner ring 9. In addition, the outer protruding pieces 19 of the ring plate 5 are inserted into the pair of notch grooves 17 of the inner ring 9. Then, the pair of inner projecting pieces 22 of the ring plate 5 enter the corresponding recesses 18 of the axle shaft 1, and the ring plate 5 is prevented from rotating with the inner ring 9. Thereby, the rotation of the inner ring 9 is blocked by the ring member 7, and the occurrence of creep is prevented. As a result, it is possible to prevent the inner ring raceway surface 14 of the inner ring 9 from peeling off, or generating abnormal noise or vibration.

本実施例の車輪支持装置１００の場合、リング板５の一対の内側突出片２２は、圧入されるリテーナリング７によってそのまま折り曲げ返される。これにより、一対の内側突出片２２を折り曲げ返す作業が容易である。しかし、一対の内側突出片２２を手作業によって折り曲げ返してもよい。   In the case of the wheel support device 100 of the present embodiment, the pair of inner projecting pieces 22 of the ring plate 5 is bent back as it is by the retainer ring 7 to be press-fitted. Thereby, the operation | work which folds back a pair of inner side protrusion piece 22 is easy. However, the pair of inner protruding pieces 22 may be folded back manually.

上記した実施例の車輪支持装置１００におけるリング板５は、一対の外側突出片１９と一対の内側突出片２２が、軸心を中心に対称位置に設けられている場合である。しかし、外側突出片１９及び内側突出片２２が、それぞれ３個以上設けられていてもよい。また、図５の（ａ），（ｂ）に示されるリング板２３のように、外周縁部に多数本の切れ目２４がラジアル方向に放射状に設けられていて、それらの間に複数個の舌片２５と、複数個の内側突出片２２とを設けてもよい。このリング板２３の場合、アクスルシャフト１と内輪９との位相がずれた場合であっても、双方を係合できるという利点がある。   The ring plate 5 in the wheel support device 100 of the above-described embodiment is a case where the pair of outer projecting pieces 19 and the pair of inner projecting pieces 22 are provided at symmetrical positions around the axis. However, three or more outer protruding pieces 19 and inner protruding pieces 22 may be provided. Further, as in the ring plate 23 shown in FIGS. 5 (a) and 5 (b), a large number of cuts 24 are provided radially in the outer peripheral edge portion, and a plurality of tongues are provided between them. A piece 25 and a plurality of inner protruding pieces 22 may be provided. In the case of this ring plate 23, there is an advantage that even when the phases of the axle shaft 1 and the inner ring 9 are shifted, both can be engaged.

本発明の実施例の車輪支持装置１００の正面断面図である。It is front sectional drawing of the wheel support apparatus 100 of the Example of this invention. （ａ）は図１の要部の拡大図であり、（ｂ）はコニカルワッシャ６とリテーナリング７を分離した状態を示す図である。(A) is an enlarged view of the principal part of FIG. 1, (b) is a figure which shows the state which isolate | separated the conical washer 6 and the retainer ring 7. FIG. （ａ）は図１のＸ矢視図であり、（ｂ）は（ａ）のＹ−Ｙ線断面図である。(A) is a X arrow view of FIG. 1, (b) is the YY sectional view taken on the line of (a). （ａ）はリング板５の断面図、（ｂ）は同じく正面図である。(A) is sectional drawing of the ring board 5, (b) is a front view similarly. （ａ）は別の実施例のリング板２３の断面図、（ｂ）は同じく正面図である。(A) is sectional drawing of the ring board 23 of another Example, (b) is a front view similarly.

符号の説明Explanation of symbols

１００：車輪支持装置
２００：軸受ユニット
１：アクスルシャフト
２：アクスルハウジング
３：取付用フランジ部
４：軸受
５，２３：リング板（クリープ防止部材）
７：リテーナリング
８，９：内輪
１７：切欠溝部（内輪側係合部）
１８：凹部（アクスルシャフト側係合部）
１９：外側突出片（第１係合部）
２２：内側突出片（第２係合部）
２５：舌片（第１係合部） 100: Wheel support device
200: Bearing unit
1: Axle shaft
2: Axle housing
3: Mounting flange
4: Bearing 5, 23: Ring plate (creep prevention member)
7: Retainer ring
8, 9: Inner ring
17: Notch groove (inner ring side engaging portion)
18: Recess (Axle shaft side engagement part)
19: Outer protruding piece (first engaging portion)
22: Inner protruding piece (second engaging portion)
25: Tongue piece (first engaging portion)

Claims (2)

駆動力を車両アウタ側の先端部に取り付けられた車輪に伝達するためのアクスルシャフトをアクスルハウジングで支持するために、前記アクスルハウジングに固定される取付用フランジ部と、前記取付用フランジ部と前記アクスルシャフトとの間に介装される軸受とを含む軸受ユニットを備える半浮動式の車輪支持装置であって、
前記軸受ユニットの内部には、前記軸受の内輪と、前記アクスルシャフトに対して前記内輪よりも車両インナ側に嵌合装着される筒状のリテーナリングとの間に配置され、前記内輪と一体回転するために、第１の係合手段を介して前記内輪と係合されると共に、アキシャル方向に所定の厚みを有するリング状であって、前記アクスルシャフトと一体回転するために、第２の係合手段を介して前記アクスルシャフトと係合されるクリープ防止部材を備え、
前記第１の係合手段は、前記内輪の車両インナ側の端面に形成された内輪側係合部と、前記車両インナ側の端面と平行状又は交差状に対向配置されるクリープ防止部材の第１係合部とを有していて、
前記第２の係合手段は、前記アクスルシャフトの外周面に形成されたアクスルシャフト側係合部と、前記アクスルシャフトの外周面と対向配置されるクリープ防止部材の第２係合部とを有していて、
前記クリープ防止部材は、前記内輪と前記リテーナリングとの間に介装されるリング板であり、
前記第１係合部は、前記クリープ防止部材の外周面からラジアル方向の外側に向かって突出し、前記内輪側係合部としての切欠部に係合されるように折り曲げられる外側突出片であり、
前記第２係合部は、前記クリープ防止部材の内周面からラジアル方向の内側に向かって突出し、前記アクスルシャフト側係合部としての凹部に係合されるように折り曲げられる内側突出片であり、
前記内側突出片は、斜めに折り曲げられることによって前記リング板が前記アクスルシャフトに嵌合可能とされ、かつ前記内輪の車両インナ側の端面と前記リング板の車両アウタ側の端面とが当接した状態で前記アクスルシャフトの凹部に没入されるように折り曲げ返されることを特徴とする車輪支持装置。 In order to support the axle shaft for transmitting the driving force to the wheel attached to the front end portion of the vehicle outer side with the axle housing, the mounting flange portion fixed to the axle housing, the mounting flange portion, A semi-floating wheel support device comprising a bearing unit including a bearing interposed between an axle shaft and
The bearing unit is disposed between the inner ring of the bearing and a cylindrical retainer ring that is fitted and mounted on the axle shaft closer to the vehicle inner side than the inner ring, and rotates integrally with the inner ring. Therefore, the second engagement member is engaged with the inner ring through the first engagement means and has a ring shape having a predetermined thickness in the axial direction, and rotates in unison with the axle shaft. An anti-creep member engaged with the axle shaft via a coupling means;
The first engagement means includes an inner ring side engagement portion formed on an end surface of the inner ring on the vehicle inner side, and a first anti-creep member disposed opposite to the end surface on the vehicle inner side in a parallel or intersecting manner. One engaging portion,
The second engaging means includes an axle shaft side engaging portion formed on the outer peripheral surface of the axle shaft, and a second engaging portion of a creep preventing member disposed to face the outer peripheral surface of the axle shaft. And
The creep prevention member is a ring plate interposed between the inner ring and the retainer ring,
The first engaging portion is an outer protruding piece that protrudes outward in the radial direction from the outer peripheral surface of the creep preventing member and is bent so as to be engaged with a notch portion as the inner ring side engaging portion,
The second engaging portion is an inner protruding piece that protrudes inward in the radial direction from the inner peripheral surface of the creep preventing member and is bent so as to be engaged with a concave portion as the axle shaft engaging portion. ,
The inner projecting piece is bent obliquely so that the ring plate can be fitted to the axle shaft, and the end surface of the inner ring on the vehicle inner side and the end surface of the ring plate on the vehicle outer side are in contact with each other. A wheel support device, wherein the wheel support device is folded back so as to be immersed in the recess of the axle shaft in a state . 駆動力を車両アウタ側の先端部に取り付けられた車輪に伝達するためのアクスルシャフトをアクスルハウジングで支持するために、前記アクスルハウジングに固定される取付用フランジ部と、前記取付用フランジ部と前記アクスルシャフトとの間に介装される軸受とを含む軸受ユニットを備える半浮動式の車輪支持装置であって、In order to support the axle shaft for transmitting the driving force to the wheel attached to the front end portion of the vehicle outer side with the axle housing, the mounting flange portion fixed to the axle housing, the mounting flange portion, A semi-floating wheel support device comprising a bearing unit including a bearing interposed between an axle shaft and
前記軸受ユニットの内部には、前記軸受の内輪と、前記アクスルシャフトに対して前記内輪よりも車両インナ側に嵌合装着される筒状のリテーナリングとの間に配置され、前記内輪と一体回転するために、第１の係合手段を介して前記内輪と係合されると共に、アキシャル方向に所定の厚みを有するリング状であって、前記アクスルシャフトと一体回転するために、第２の係合手段を介して前記アクスルシャフトと係合されるクリープ防止部材を備え、The bearing unit is disposed between the inner ring of the bearing and a cylindrical retainer ring that is fitted and mounted on the axle shaft closer to the vehicle inner side than the inner ring, and rotates integrally with the inner ring. Therefore, the second engagement member is engaged with the inner ring through the first engagement means and has a ring shape having a predetermined thickness in the axial direction, and rotates in unison with the axle shaft. An anti-creep member engaged with the axle shaft via a coupling means;
前記第１の係合手段は、前記内輪の車両インナ側の端面に形成された内輪側係合部と、前記車両インナ側の端面と平行状又は交差状に対向配置されるクリープ防止部材の第１係合部とを有していて、The first engagement means includes an inner ring side engagement portion formed on an end surface of the inner ring on the vehicle inner side, and a first anti-creep member disposed opposite to the end surface on the vehicle inner side in a parallel or intersecting manner. One engaging portion,
前記第２の係合手段は、前記アクスルシャフトの外周面に形成されたアクスルシャフト側係合部と、前記アクスルシャフトの外周面と対向配置されるクリープ防止部材の第２係合部とを有していて、The second engaging means includes an axle shaft side engaging portion formed on the outer peripheral surface of the axle shaft, and a second engaging portion of a creep preventing member disposed to face the outer peripheral surface of the axle shaft. And
前記クリープ防止部材は、前記内輪と前記リテーナリングとの間に介装されるリング板であり、The creep prevention member is a ring plate interposed between the inner ring and the retainer ring,
前記第１係合部は、前記クリープ防止部材の外周面からラジアル方向の外側に向かって突出し、前記内輪側係合部としての切欠部に係合されるように折り曲げられる外側突出片であり、The first engaging portion is an outer protruding piece that protrudes outward in the radial direction from the outer peripheral surface of the creep preventing member and is bent so as to be engaged with a notch portion as the inner ring side engaging portion,
前記第２係合部は、前記クリープ防止部材の内周面からラジアル方向の内側に向かって突出し、前記アクスルシャフト側係合部としての凹部に係合されるように折り曲げられる内側突出片であり、The second engaging portion is an inner protruding piece that protrudes inward in the radial direction from the inner peripheral surface of the creep preventing member and is bent so as to be engaged with a concave portion as the axle shaft engaging portion. ,
前記内側突出片は、リテーナリングに押圧されることによって折り曲げ返されることを特徴とする車輪支持装置。The wheel support device according to claim 1, wherein the inner protruding piece is bent back by being pressed by a retainer ring.
JP2007099622A 2007-04-05 2007-04-05 Wheel support device Expired - Fee Related JP4919161B2 (en)

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