JP2007218276A - Driving wheel bearing device - Google Patents

Driving wheel bearing device Download PDF

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Publication number
JP2007218276A
JP2007218276A JP2006036484A JP2006036484A JP2007218276A JP 2007218276 A JP2007218276 A JP 2007218276A JP 2006036484 A JP2006036484 A JP 2006036484A JP 2006036484 A JP2006036484 A JP 2006036484A JP 2007218276 A JP2007218276 A JP 2007218276A
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Prior art keywords
outer ring
joint outer
hub
ring
joint
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JP2006036484A
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Japanese (ja)
Inventor
Hiroshi Kawamura
浩志 河村
Shigeaki Fukushima
茂明 福島
Kiyoshige Yamauchi
清茂 山内
Hikari Umekida
光 梅木田
Hitohiro Ozawa
仁博 小澤
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NTN Corp
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NTN Corp
NTN Toyo Bearing Co Ltd
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Priority to JP2006036484A priority Critical patent/JP2007218276A/en
Publication of JP2007218276A publication Critical patent/JP2007218276A/en
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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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/64—Special methods of manufacture
    • 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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • 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
    • 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 bearing device for rotatably bearing the wheels of an automobile, wherein a fourth-generation H/J (hub joint) outer ring is inexpensively manufactured. <P>SOLUTION: The driving wheel bearing device comprises a hub ring 30, the joint outer ring 40 and double-row rolling bearings formed in one unit. One 32 of the inner races of the double-row rolling bearings is formed as the hub ring 30, and the other is formed as the joint outer ring 40. A hollow stem portion 40b of the joint outer ring 40 is inserted into the hub ring 30 and its end is caulked to plastically join the hub ring 30 to the joint outer ring 40 in one unit. The hollow stem portion 40b of the joint outer ring 40 is formed by swaging a pipe material. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、自動車等の車輪を回転自在に支承する車輪用軸受装置、より詳しくは、ハブ輪と継手外輪と複列の転がり軸受とをユニット化した駆動車輪用軸受装置に関する。   The present invention relates to a wheel bearing device for rotatably supporting a wheel of an automobile or the like, and more particularly to a drive wheel bearing device in which a hub wheel, a joint outer ring, and a double row rolling bearing are unitized.

ＦＲ車の後輪、ＦＦ車の前輪、あるいは４ＷＤ車の全輪といった自動車の駆動輪は、車輪用軸受装置により懸架装置に対して回転自在に支承されている。近年、車輪用軸受装置は、軽量・コンパクト化を狙って、ハブ輪と軸受部と等速自在継手の外輪（以下、継手外輪と称する）とをユニット化する傾向にある。   Driving wheels of automobiles such as rear wheels of FR vehicles, front wheels of FF vehicles, or all wheels of 4WD vehicles are rotatably supported with respect to a suspension device by a wheel bearing device. 2. Description of the Related Art In recent years, wheel bearing devices tend to unitize a hub wheel, a bearing portion, and an outer ring of a constant velocity universal joint (hereinafter referred to as a joint outer ring) with the aim of reducing weight and size.

特許文献１では、パイプ材にスウェージング加工を施して継手外輪を成形することが提案されている。
特開昭５３−６７０４５号公報 In Patent Document 1, it is proposed to perform a swaging process on a pipe material to form a joint outer ring.
JP-A-53-67045

特許文献１に記載された従来の技術では、継手外輪のステム軸を中実とするために非常に多大な変形を材料に与えている。そのため加工工程中に中間焼きなましが必要となり、コスト高になる。さらに、ステム部をスウェージング加工により閉塞し、マウス部に充填される潤滑油などの流出を防止するようにしているが、パイプ素材を内径部が完全に閉塞するまですえ込むことは極めて難しく、実際上不可能に近い。すなわち、中空のパイプ素材をスウェージング加工した場合、すえ込み圧力や素材の肉厚をそのように設定しても、その内径中心部を完全に埋めつくすまで材料を塑性流動させることは難しく、内径部にすきまが残留した状態で成形されることが多い。このため、マウス部からの潤滑油の流出を完全に防止することができず、安定した潤滑性能を維持できないという不具合がある。また、スウェージング加工により内部を塞がれた状態で小径に成形されたステム部は、捩りトルクに対して剛性が低いという問題もある。   In the conventional technique described in Patent Document 1, a very large amount of deformation is given to the material in order to make the stem shaft of the joint outer ring solid. For this reason, intermediate annealing is required during the processing step, which increases costs. In addition, the stem part is closed by swaging to prevent the lubricating oil filled in the mouse part from flowing out, but it is extremely difficult to swallow the pipe material until the inner diameter part is completely closed, It is practically impossible. That is, when a hollow pipe material is swaging processed, it is difficult to plastically flow the material until the inner diameter center portion is completely filled, even if the upset pressure and the thickness of the material are set as such. It is often molded with a gap remaining in the part. For this reason, the outflow of the lubricating oil from the mouse portion cannot be completely prevented, and there is a problem that stable lubricating performance cannot be maintained. In addition, the stem portion formed in a small diameter in a state in which the inside is closed by swaging processing has a problem that rigidity is low with respect to torsion torque.

また、継手外輪の中空ステム部をハブ輪の貫通孔に挿入して軸端をかしめることによって継手外輪とハブ輪を一体化し、継手外輪とハブ輪に複列のインナレースを配分的に形成した、４世代Ｈ／Ｊ（ハブ・ジョイント）と呼ばれる駆動車輪軸受装置においては、ステム部が中空であるため、ビレットからの鍛造で継手外輪を成形するのでは中空部の穴あけが必要となりコスト高になる。   Also, by inserting the hollow stem part of the joint outer ring into the through hole of the hub ring and caulking the shaft end, the joint outer ring and the hub ring are integrated, and a double row inner race is formed on the joint outer ring and the hub ring in a distributed manner. In the drive wheel bearing device called 4th generation H / J (hub joint), the stem is hollow, so forming the outer ring of the joint by forging from a billet requires drilling of the hollow and high cost. become.

この発明の目的は、４世代Ｈ／Ｊを安価に製造することにある。   An object of the present invention is to manufacture a fourth generation H / J at low cost.

この発明は、ハブ輪と継手外輪と複列転がり軸受とをユニット化した駆動車輪用軸受装置であって、複列転がり軸受のインナレースのうちの一方がハブ輪に、他方が継手外輪に形成してあり、継手外輪の中空ステム部をハブ輪に挿入して端部をかしめることによりハブ輪と継手外輪を一体に塑性結合させてあり、継手外輪の中空ステム部がパイプ素材をスウェージングにより成形したものであることを特徴としている。ここで、スウェージングとは、パイプの端部またはその一部を絞り、外形を減少させる加工法をいう。   The present invention is a bearing device for a drive wheel in which a hub wheel, a joint outer ring, and a double row rolling bearing are unitized, and one of the inner races of the double row rolling bearing is formed on a hub wheel and the other is formed on a joint outer ring. By inserting the hollow stem part of the joint outer ring into the hub ring and caulking the end part, the hub ring and the joint outer ring are integrally plastically bonded, and the hollow stem part of the joint outer ring swages the pipe material. It is characterized by being molded by Here, swaging refers to a processing method of reducing the outer shape by narrowing the end portion or a part of the pipe.

この発明によれば、４世代Ｈ／Ｊを安価に製造することができる。すなわち、この発明の駆動車輪用軸受装置は、継手外輪の中空ステム部をかしめるタイプのいわゆる４世代Ｈ／Ｊであって、スウェージングで中空ステムを製作するのに適した構造である。さらに、加工による変形量も少ないため中間焼きなましが不要になり、コスト高にならない。   According to this invention, the 4th generation H / J can be manufactured at low cost. That is, the drive wheel bearing device of the present invention is a so-called 4th generation H / J type that caulks the hollow stem portion of the joint outer ring, and has a structure suitable for manufacturing the hollow stem by swaging. Furthermore, since the amount of deformation due to processing is small, intermediate annealing is not necessary, and the cost is not increased.

以下、図面に従ってこの発明の実施の形態を説明する。   Embodiments of the present invention will be described below with reference to the drawings.

図１に示すように、駆動輪用軸受装置は、複列転がり軸受とハブ輪３０と継手内輪４０とをユニット化したもので、複列のインナレースを配分的に、つまり、一方をハブ輪に、他方を継手外輪に形成してある点で、いわゆる第４世代と称される構成を備えている。   As shown in FIG. 1, the bearing device for a driving wheel is a unit in which a double row rolling bearing, a hub wheel 30 and a joint inner ring 40 are unitized, and a double row inner race is distributed, that is, one is a hub wheel. In addition, the other is formed in a joint outer ring, so that a so-called fourth generation configuration is provided.

複列転がり軸受は、複列の転動体２０を介して相対回転自在の外方部材１０と内方部材を含む。ここでは転動体２０として玉が例示してある。外方部材１０は車体に取り付けるための車体取り付けフランジ１４を外周に有し、内周に複列のアウタレース１２が形成してある。この複列のアウタレース１２と対応する複列のインナレースのうち、一方のインナレース３２はハブ輪３０の外周に形成してあり、他方のインナレース４２は継手外輪４０の外周に形成してある。したがって、ハブ輪３０と継手外輪４０を合わせて、外方部材１０に対して内方部材と呼ぶこととする。   The double row rolling bearing includes an outer member 10 and an inner member that are rotatable relative to each other via a double row rolling element 20. Here, balls are illustrated as the rolling elements 20. The outer member 10 has a vehicle body attachment flange 14 for attachment to the vehicle body on the outer periphery, and a double row outer race 12 is formed on the inner periphery. Among the double row inner races corresponding to the double row outer races 12, one inner race 32 is formed on the outer periphery of the hub wheel 30, and the other inner race 42 is formed on the outer periphery of the joint outer ring 40. . Therefore, the hub wheel 30 and the joint outer ring 40 are collectively referred to as an inner member with respect to the outer member 10.

アウタレース１２とインナレース３２，４２との間に複列の転動体２０が介在させてあり、各列の転動体２０は保持器で保持されている。軸受内部に封入した潤滑グリースの漏れ出しや、外部から雨水やダスト等が入り込むのを防止するため、外方部材１０の両端部にはシール１６，１８が装着してある。   Double row rolling elements 20 are interposed between the outer race 12 and the inner races 32, 42, and the rolling elements 20 in each row are held by a cage. Seals 16 and 18 are attached to both ends of the outer member 10 in order to prevent leakage of the lubricating grease sealed inside the bearing and entry of rainwater and dust from the outside.

ハブ輪３０は車輪を取り付けるための車輪取り付けフランジ３４を有している。車輪取り付けフランジ３４の円周上等配位置には車輪を固定するためのハブボルト３５が植え込んである。ハブ輪３０は軸心部に貫通孔３６を有し、その貫通孔３６の一方の端部内周に凹凸部３８が設けてある。凹凸部３８はたとえばアヤメローレット状に形成され、旋削等で形成した互いに独立した複数の環状溝と、ブローチ加工等で形成し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３８の凸部は、良好な食い込みを確保するため、先端を三角形状等の尖頭形状にしてある。   The hub wheel 30 has a wheel mounting flange 34 for mounting a wheel. Hub bolts 35 for fixing the wheels are implanted in equidistant positions on the circumference of the wheel mounting flange 34. The hub wheel 30 has a through hole 36 in the axial center portion, and an uneven portion 38 is provided on the inner periphery of one end of the through hole 36. The concavo-convex portion 38 is formed, for example, in the shape of a iris knurl, and a plurality of independent annular grooves formed by turning or the like and a plurality of axial grooves formed by broaching or the like are crossed grooves configured to be substantially orthogonal, or It consists of crossing grooves composed of spiral grooves inclined to each other. Further, the convex portion of the concave and convex portion 38 has a pointed shape such as a triangular shape at the tip in order to ensure good biting.

継手外輪４０はマウス部４０ａとステム部４０ｂを含む。マウス部４０ａはベル形で、内周に軸方向に延びる曲線状のトラック溝が円周方向に等間隔に形成してある。ステム部４０ｂは中空で貫通孔４６を有し、符号４４で示す肩部から軸方向に延びている。マウス部４０ａ内に充填したグリースの漏洩を防止するため、貫通孔４６の内側端、言い換えればマウス部４０ａ側端に、キャップ４７が装着してある。なお、等速自在継手は、継手外輪４０のほか継手内輪、トルク伝達要素、ケージ等を構成要素として包含するが、具体的な構成要素は継手の種類によっても異なることから、ここでは継手外輪４０のみ図示し、その他の構成要素は省略してある。   The joint outer ring 40 includes a mouse part 40a and a stem part 40b. The mouse portion 40a is bell-shaped, and curved track grooves extending in the axial direction on the inner periphery are formed at equal intervals in the circumferential direction. The stem portion 40 b is hollow and has a through hole 46, and extends in the axial direction from a shoulder portion indicated by reference numeral 44. In order to prevent leakage of grease filled in the mouse part 40a, a cap 47 is attached to the inner end of the through hole 46, in other words, the mouse part 40a side end. The constant velocity universal joint includes a joint outer ring 40, a joint inner ring, a torque transmission element, a cage, and the like as constituent elements. However, since specific constituent elements differ depending on the type of joint, the joint outer ring 40 is here. Only the components are shown, and other components are omitted.

継手外輪４０のステム部４０ｂをハブ輪３０の貫通孔３６に挿入し、ステム部４０ｂにマンドレル等の拡径治具を押し込んで拡径させることにより、ステム部４０ｂにハブ輪３０の凹凸部３８を食い込ませ、ハブ輪３０と継手外輪４０を塑性結合させてある。符号４８はステム部４０ｂの塑性結合部を示す。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ともに、ハブ輪３０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、車両への組込み性を簡便にすることができる。なお、継手外輪４０の中空ステム部４０ｂを拡径させてハブ輪３０にかしめる場合を例示したが、これに限らず、継手外輪４０の中空ステム部４０ｂの、ハブ輪３０のアウトボード側端部から突出した部分を半径方向に曲げて拡げる、いわゆる揺動かしめを採用してもよい。   The stem portion 40b of the joint outer ring 40 is inserted into the through hole 36 of the hub wheel 30, and a diameter expanding jig such as a mandrel is pushed into the stem portion 40b to expand the diameter, whereby the uneven portion 38 of the hub wheel 30 is formed on the stem portion 40b. The hub wheel 30 and the joint outer ring 40 are plastically coupled. Reference numeral 48 denotes a plastic coupling portion of the stem portion 40b. 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 30 can be improved and long. The amount of preload can be maintained for a period. Furthermore, the ease of incorporation into the vehicle can be simplified. In addition, although the case where the hollow stem part 40b of the joint outer ring | wheel 40 was expanded and crimped to the hub wheel 30 was illustrated, it is not restricted to this, The outboard side end of the hub wheel 30 of the hollow stem part 40b of the joint outer ring | wheel 40 You may employ | adopt what is called rocking caulking which bends and expands the part which protruded from the part to radial direction.

継手外輪４０は、図２に示すように、パイプ素材からスウェージングによって成形する。すなわち、図２（Ａ）に示すようなパイプ素材にスウェージングを施して図２（Ｂ）に示すような中間品を得る。この中間品は、図２（Ｃ）から分かるように、一端側に小径で中空の、ステム部４０ｂとなる部分を有し、他端側にマウス部４０ａとなる部分を有する。図２（Ｃ）は中間品の外形（図２（Ｂ））の外形と最終製品の外形（図２（Ｄ））を重ねて表示したもので、実線は中間品を示し、破線は最終製品を示す。次に、中間品に後加工を施して図２（Ｄ）に示すような最終製品を得る。マウス部４０ａのとくに内部の加工は、切削でも、あるいはプレス加工でもよい。   The joint outer ring | wheel 40 is shape | molded by a swaging from a pipe raw material, as shown in FIG. That is, the pipe material as shown in FIG. 2A is swaged to obtain an intermediate product as shown in FIG. As can be seen from FIG. 2 (C), this intermediate product has a small-diameter and hollow portion on one end side that becomes a stem portion 40b, and a portion that becomes a mouse portion 40a on the other end side. FIG. 2 (C) shows the outer shape of the intermediate product (FIG. 2 (B)) and the outer shape of the final product (FIG. 2 (D)). The solid line indicates the intermediate product, and the broken line indicates the final product. Indicates. Next, the intermediate product is post-processed to obtain a final product as shown in FIG. In particular, the processing inside the mouse portion 40a may be cutting or press processing.

この発明の実施の形態を示す車輪用軸受装置の縦断面図The longitudinal cross-sectional view of the wheel bearing apparatus which shows embodiment of this invention 継手外輪の製造過程を示す工程図Process chart showing manufacturing process of joint outer ring

符号の説明Explanation of symbols

１０ 外方部材
１２ アウタレース
１４ 車体取り付けフランジ
１６，１８ シール
２０ 転動体
３０ ハブ輪（内方部材）
３２ インナレース（アウトボード側）
３４ 車輪取り付けフランジ
３５ ハブボルト
３６ 貫通孔
３８ 凹凸部
４０ 継手外輪（内方部材）
４０ａ マウス部
４２ インナレース（インボード側）
４４ 肩部
４０ｂ ステム部
４６ 貫通孔
４７ キャップ
４８ かしめ部

DESCRIPTION OF SYMBOLS 10 Outer member 12 Outer race 14 Car body mounting flange 16, 18 Seal 20 Rolling element 30 Hub wheel (inner member)
32 Inner race (outboard side)
34 Wheel mounting flange 35 Hub bolt 36 Through hole 38 Concavity and convexity 40 Joint outer ring (inner member)
40a Mouse part 42 Inner race (inboard side)
44 shoulder 40b stem 46 through hole 47 cap 48 caulking

Claims (1)

ハブ輪と継手外輪と複列転がり軸受とをユニット化した駆動車輪用軸受装置であって、
複列転がり軸受のインナレースのうちの一方がハブ輪に、他方が継手外輪に形成してあり、
継手外輪の中空ステム部をハブ輪に挿入して端部をかしめることによりハブ輪と継手外輪を一体に塑性結合させてあり、
継手外輪の中空ステム部がパイプ素材をスウェージング加工により成形したものである駆動車輪用軸受装置。 A bearing device for a drive wheel in which a hub wheel, a joint outer ring, and a double row rolling bearing are unitized,
One of the inner races of the double row rolling bearing is formed on the hub ring, and the other is formed on the joint outer ring.
By inserting the hollow stem part of the joint outer ring into the hub ring and caulking the end part, the hub ring and the joint outer ring are integrally plastically joined.
A drive wheel bearing device in which a hollow stem portion of a joint outer ring is formed by swaging a pipe material.
JP2006036484A 2006-02-14 2006-02-14 Driving wheel bearing device Withdrawn JP2007218276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006036484A JP2007218276A (en) 2006-02-14 2006-02-14 Driving wheel bearing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006036484A JP2007218276A (en) 2006-02-14 2006-02-14 Driving wheel bearing device

Publications (1)

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JP2007218276A true JP2007218276A (en) 2007-08-30

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JP2006036484A Withdrawn JP2007218276A (en) 2006-02-14 2006-02-14 Driving wheel bearing device

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Effective date: 20090512