JPH0728220U - Bearing devices for vehicle propeller shafts - Google Patents

Abstract

(57)【要約】 【目的】 プロペラシャフトの取付誤差を逃がして軸受
の偏荷重を防止でき、また組付け後の内部隙間のバラツ
キを小さくできて、音響や振動発生の低下、および長寿
命化が図れるものとする。 【構成】 この軸受装置１は、深溝玉軸受２の外輪８の
外周にリング状の軸受箱３を設け、外輪８の外径面と軸
受箱３の外輪８が嵌合する内径面部分とを球面としたも
のである。軸受箱３は、中央軸受箱４と、その両側の側
部軸受箱５，５とからなり、外周に軸受箱カバー６が設
けられる。軸受箱カバー６は、軸受２の軸方向中央で両
側に２分割されており、その外周にゴムまたは合成樹脂
等からなる弾性部材１２が嵌められる。弾性部材１２は
断面が外向きＣ字状に形成されたリング状のものであ
り、車体に外周部が取付けられる。 (57) [Abstract] [Purpose] Propeller shaft mounting errors can be released to prevent eccentric load on the bearing, and variations in the internal clearance after assembly can be reduced to reduce the occurrence of sound and vibration and extend the service life. Shall be possible. [Structure] In this bearing device 1, a ring-shaped bearing box 3 is provided on the outer circumference of an outer ring 8 of a deep groove ball bearing 2, and an outer diameter surface of the outer ring 8 and an inner diameter surface portion of the bearing box 3 to which the outer ring 8 is fitted. It is a spherical surface. The bearing housing 3 is composed of a central bearing housing 4 and side bearing housings 5 and 5 on both sides thereof, and a bearing housing cover 6 is provided on the outer circumference. The bearing box cover 6 is divided into two parts on both sides at the center of the bearing 2 in the axial direction, and an elastic member 12 made of rubber, synthetic resin, or the like is fitted on the outer periphery thereof. The elastic member 12 is a ring-shaped member having a C-shaped cross section outwardly, and the outer peripheral portion is attached to the vehicle body.

Description

【考案の詳細な説明】[Detailed description of the device]

【０００１】[0001]

【産業上の利用分野】[Industrial applications]

この考案は、自動車等の車両用プロペラシャフトのセンターシャフト等を支持 する軸受装置に関する。 The present invention relates to a bearing device that supports a center shaft of a propeller shaft for vehicles such as automobiles.

【０００２】[0002]

【従来の技術】[Prior art]

図３に示すように３箇所に自在継手５１〜５３を設けたプロペラシャフト５０ では、シャフト中間部を支持する軸受装置５４が必要となる。従来、この軸受装 置５４として図４に示すものが使用されている。すなわち、プロペラシャフト５ ０の第１軸５０ａを、その外周に圧入した深溝玉軸受５５で受け、さらにその外 周にゴム等の弾性部材５６を介在させて車体に支持している。この弾性部材５６ により、プロペラシャフト５０に起因する振動が車室内に伝わるのを遮断してい る。 In the propeller shaft 50 in which the universal joints 51 to 53 are provided at three positions as shown in FIG. 3, the bearing device 54 that supports the shaft intermediate portion is required. Conventionally, the bearing device 54 shown in FIG. 4 has been used. That is, the first shaft 50a of the propeller shaft 50 is received by the deep groove ball bearing 55 press-fitted on the outer periphery thereof, and further supported by the vehicle body with an elastic member 56 such as rubber interposed on the outer periphery thereof. The elastic member 56 blocks the vibration caused by the propeller shaft 50 from being transmitted to the passenger compartment.

【０００３】[0003]

【考案が解決しようとする課題】[Problems to be solved by the device]

プロペラシャフト５０の自在継手５１の軸芯と軸受装置５４の軸芯とに、組付 の際に径方向の取付誤差を生じる場合がある。例えば、軸５０ａに対する組付け 位置に径方向誤差が生じる。このような誤差は、軸受５５の外周の弾性部材５６ の弾性変形で逃がされる。 A radial mounting error may occur at the time of assembling the shaft center of the universal joint 51 of the propeller shaft 50 and the shaft center of the bearing device 54. For example, a radial error occurs in the mounting position with respect to the shaft 50a. Such an error is released by elastic deformation of the elastic member 56 on the outer periphery of the bearing 55.

【０００４】 しかし、このように弾性変形状態になると、弾性部材５６の剛性のために軸受 ５５にこじれが生じ、軸受５５の内外輪の間に常にモーメント荷重が作用する。 そのため、軸受５５の長寿命化が望めず、音響劣化も招く恐れがある。 また、軸受５５は、弾性部材５６の内周のプレス成形品からなる軸受箱５７に 対して締り嵌めで固定しているが、その嵌め合い公差で軸受５５の取付状態が変 わるため、軸受５５の内部隙間のバラツキが大きくなる。このような内部隙間の バラツキは、軸受寿命の低下および音響値の増大につながる。However, in such an elastically deformed state, the rigidity of the elastic member 56 causes the bearing 55 to twist, and a moment load always acts between the inner and outer rings of the bearing 55. Therefore, the bearing 55 cannot be expected to have a long life, which may lead to acoustic deterioration. Further, the bearing 55 is fixed to the bearing box 57 made of a press-molded product on the inner periphery of the elastic member 56 by an interference fit, but the fitting state of the bearing 55 changes the fitting state of the bearing 55. The variation in the internal clearance of will increase. Such variations in internal clearance lead to a reduction in bearing life and an increase in acoustic value.

【０００５】 この考案の目的は、プロペラシャフトの取付誤差を逃がして軸受の偏荷重を防 止でき、また装置への組付け後の内部隙間のバラツキを小さくできて、音響や振 動発生の低下、および長寿命化が図れる車両用プロペラシャフトの軸受装置を提 供することである。An object of the present invention is to eliminate an error in mounting a propeller shaft to prevent an eccentric load on a bearing, and to reduce variations in an internal clearance after assembling to a device, thereby reducing generation of sound and vibration. The purpose of the present invention is to provide a bearing device for a propeller shaft for a vehicle, which has a long life.

【０００６】[0006]

【課題を解決するための手段】[Means for Solving the Problems]

この考案の車両用プロペラシャフトの軸受装置は、転がり軸受の外輪の外周に リング状の軸受箱を設け、外輪の外径面と軸受箱の外輪が嵌合する内径面部分と を球面としたものである。 The propeller shaft bearing device for a vehicle of the present invention has a ring-shaped bearing box provided on the outer periphery of the outer ring of the rolling bearing, and the outer diameter surface of the outer ring and the inner diameter surface portion where the outer ring of the bearing box fits are spherical. Is.

【０００７】[0007]

【作用】[Action]

外輪の外径面と軸受箱の内径面部分を球面にしたことにより、軸受装置の全体 が調心機能を有した軸受と同様に機能する。そのため、プロペラシャフトを構成 する各軸間に取付誤差があった場合、この軸受装置でその誤差を逃がすことがで き、軸受寿命が向上する。 また、軸受箱はリング状のものとし、軸受外輪と球面で嵌合させる構成とした ため、軸受箱と軸受とが一体となった軸受装置として製造され、かつ取り扱われ ることになる。そのため、軸受の取付状態が安定し、組付け後の軸受内部隙間の バラツキが小さくでる。したがって音響値および振動が低下し、軸受寿命の向上 にもつながる。 By making the outer diameter surface of the outer ring and the inner diameter surface portion of the bearing housing spherical, the entire bearing device functions as a bearing having a centering function. Therefore, if there is a mounting error between the shafts that make up the propeller shaft, this error can be released by this bearing device, and the bearing life is improved. Further, since the bearing box has a ring shape and is configured to be fitted to the outer ring of the bearing on a spherical surface, the bearing box and the bearing are manufactured and handled as an integrated bearing device. Therefore, the mounting condition of the bearing is stable, and the variation in the bearing internal clearance after assembly is small. Therefore, the acoustic value and vibration are reduced, which leads to the improvement of bearing life.

【０００８】[0008]

【実施例】【Example】

この考案の一実施例を図１および図２に基づいて説明する。図２に示すように この軸受装置１は、転がり軸受２の外輪８の外周にリング状の軸受箱３を設け、 外輪８の外径面８ａと軸受箱３の外輪８が嵌合する内径面部分４ａとを球面とし たものである。軸受２は、外輪８を内輪７よりも幅狭に形成した深溝玉軸受から なり、内外輪７，８間に保持器１０で保持された転動体９を配置すると共に、両 面にシール１１を設けてある。 An embodiment of this invention will be described with reference to FIGS. As shown in FIG. 2, this bearing device 1 is provided with a ring-shaped bearing box 3 on the outer periphery of an outer ring 8 of a rolling bearing 2, and an outer diameter surface 8a of the outer ring 8 and an inner diameter surface of the outer ring 8 of the bearing box 3 are fitted to each other. The part 4a is a spherical surface. The bearing 2 consists of a deep groove ball bearing in which the outer ring 8 is formed narrower than the inner ring 7, and the rolling elements 9 held by the cage 10 are arranged between the inner and outer rings 7 and 8 and seals 11 are provided on both sides. It is provided.

【０００９】 軸受箱３は、中央軸受箱４と、その両側の軸受箱カバー６，６とからなり、側 部空間５，５を形成する。軸受箱カバー６は鋼板等のプレス成形品からなり、中 央軸受箱４から側部軸受箱５に渡って外周の全体に嵌合する段付き円筒部材に形 成されている。軸受箱カバー６は、軸受２の軸方向中央で両側に２分割されてお り、その外周にゴムまたは合成樹脂等からなる弾性部材１２が嵌められる。The bearing housing 3 is composed of a central bearing housing 4 and bearing housing covers 6 and 6 on both sides of the central bearing housing 4 to form side spaces 5 and 5. The bearing box cover 6 is made of a press-formed product such as a steel plate and is formed into a stepped cylindrical member that fits over the entire outer circumference from the central bearing box 4 to the side bearing box 5. The bearing box cover 6 is divided into two parts on both sides at the center of the bearing 2 in the axial direction, and an elastic member 12 made of rubber, synthetic resin or the like is fitted to the outer periphery of the bearing box cover 6.

【００１０】 図１に示すように、弾性部材１２は断面が外向きＣ字状に形成されたリング状 のものであり、車体フレーム（図示せず）に外周部が取付けられる。 この軸受装置１の内輪７は、プロペラシャフト５０の第１軸５０ａの所定箇所 に嵌合して片面が第１軸５０ａの段面に係合する。プロペラシャフト５０は、図 ３に示した３継手型のものである。自在継手５２を構成する片方のフォーク状の 継手部材５２Ａは、その基端の筒部５２ａが第１軸５０ａに嵌合し、第１軸５０ ａの先端に螺着されたナット６０により、軸受内輪７と共に締め付け固定される 。なお、軸受箱カバー６の両端部の外周には、第１軸５０ａおよび継手部材５２ Ａに各々固定したリング状の防塵カバー１３，１４が被せてある。As shown in FIG. 1, the elastic member 12 is a ring-shaped member having a C-shaped cross section outwardly, and an outer peripheral portion thereof is attached to a vehicle body frame (not shown). The inner ring 7 of the bearing device 1 is fitted into a predetermined portion of the first shaft 50a of the propeller shaft 50 so that one surface thereof engages with the step surface of the first shaft 50a. The propeller shaft 50 is of the three-joint type shown in FIG. One fork-shaped joint member 52A forming the universal joint 52 has a cylindrical portion 52a at the base end thereof fitted to the first shaft 50a, and a bearing 60 by a nut 60 screwed to the tip of the first shaft 50a. It is fastened and fixed together with the inner ring 7. The outer circumferences of both ends of the bearing box cover 6 are covered with ring-shaped dustproof covers 13 and 14 fixed to the first shaft 50a and the joint member 52A, respectively.

【００１１】 この構成の軸受装置１によると、軸受外輪８の外径面８ａと中央軸受箱４の内 径面部分４ａを球面に形成したため、この球面部分で互いに自由に滑ることがで き、軸受装置１の全体が調心機能を有した軸受と同様に機能する。そのため、プ ロペラシャフト５０を構成する軸受装置５４と自在継手５１（図３）との間に取 付誤差があっても、その誤差による第１軸５０ａの傾きをこの軸受装置１で逃が すことができる。そのため、軸受２の内外輪７，８間に偏った荷重が作用せず、 軸受寿命が向上する。According to the bearing device 1 having this configuration, the outer diameter surface 8a of the bearing outer ring 8 and the inner diameter surface portion 4a of the central bearing housing 4 are formed into spherical surfaces, so that the spherical surface portions can freely slide with each other. The entire bearing device 1 functions similarly to a bearing having a centering function. Therefore, even if there is an installation error between the bearing device 54 that constitutes the propeller shaft 50 and the universal joint 51 (FIG. 3), the inclination of the first shaft 50a caused by the error is released by this bearing device 1. be able to. Therefore, a biased load is not applied between the inner and outer races 7 and 8 of the bearing 2, and the bearing life is improved.

【００１２】 また、軸受箱３をリング状のものとし、軸受外輪８と球面で嵌合させる構成と したため、軸受箱３と軸受２とが一体となった軸受装置１として取り扱うことが できる。そのため、軸受２の取付状態が安定し、組付け後の軸受２の内部隙間の バラツキを小さくできる。したがって、音響値および振動が低下し、軸受寿命の 向上にもつながる。 この実施例では、軸受箱３を中央軸受箱４と一対の軸受箱カバー６，６とで形 成し、中央軸受箱４と軸受箱カバー６，６との嵌め合いによる中央軸受箱４の半 径方向の寸法変化は中央軸受箱４の内径面部分４ａと軸受外輪外径面８ａとの隙 間で吸収し、組付け後の軸受内部隙間のバラツキをより小さくすることができる 。Further, since the bearing box 3 has a ring shape and is fitted to the bearing outer ring 8 on a spherical surface, it can be handled as the bearing device 1 in which the bearing box 3 and the bearing 2 are integrated. Therefore, the mounting state of the bearing 2 is stable, and the variation in the internal clearance of the bearing 2 after assembly can be reduced. Therefore, the acoustic value and vibration are reduced, and the bearing life is extended. In this embodiment, the bearing housing 3 is composed of a central bearing housing 4 and a pair of bearing housing covers 6 and 6, and a half of the central bearing housing 4 is formed by fitting the central bearing housing 4 and the bearing housing covers 6 and 6. The dimensional change in the radial direction is absorbed by the gap between the inner diameter surface portion 4a of the central bearing housing 4 and the outer diameter surface 8a of the bearing outer ring, and the variation in the inner clearance of the bearing after assembly can be further reduced.

【００１３】 なお、前記実施例では軸受箱３を中央軸受箱４と一対の軸受箱カバー６，６と で構成しているが、軸受箱カバー６および防塵カバー１３，１４は必ずしも設け なくても良い。Although the bearing housing 3 is composed of the central bearing housing 4 and the pair of bearing housing covers 6 and 6 in the above embodiment, the bearing housing cover 6 and the dustproof covers 13 and 14 are not necessarily provided. good.

【００１４】[0014]

【考案の効果】[Effect of device]

この考案の車両用プロペラシャフトの軸受装置は、転がり軸受の外輪の外周に リング状の軸受箱を設け、外輪の外径面と軸受箱の内径面部分とを球面としたた め、軸受装置の全体が調心機能を有した軸受と同様に機能する。そのため、取付 誤差があってもその誤差を良好に逃がすことができ、軸受寿命が向上する。また 、軸受箱と軸受とが一体に組まれた軸受装置として取り扱え、このため取付状態 が安定して組付け後の軸受の内部隙間のバラツキが小さくなる。そのため、これ によっても軸受寿命が向上し、音響値および振動も低下する。 The propeller shaft bearing device for a vehicle of the present invention is provided with a ring-shaped bearing box on the outer periphery of the rolling bearing and the outer diameter surface of the outer ring and the inner diameter surface portion of the bearing box are spherical surfaces. The whole functions like a bearing having a centering function. Therefore, even if there is a mounting error, the error can be satisfactorily released and the bearing life is improved. Further, it can be handled as a bearing device in which the bearing housing and the bearing are integrally assembled, so that the mounting state is stable and variations in the internal clearance of the bearing after assembly are reduced. Therefore, this also improves the bearing life and reduces the acoustic value and vibration.

【図面の簡単な説明】[Brief description of drawings]

【図１】この考案の一実施例にかかる軸受装置で支持し
た車両用プロペラシャフトの部分破断断面図である。FIG. 1 is a partially cutaway sectional view of a vehicle propeller shaft supported by a bearing device according to an embodiment of the present invention.

【図２】その軸受装置の部分拡大断面図である。FIG. 2 is a partially enlarged sectional view of the bearing device.

【図３】従来の車両用プロペラシャフトの側面図であ
る。FIG. 3 is a side view of a conventional vehicle propeller shaft.

【図４】従来の車両用プロペラシャフトの軸受装置を示
す部分破断側面図である。FIG. 4 is a partially cutaway side view showing a conventional bearing device for a vehicle propeller shaft.

【符号の説明】[Explanation of symbols]

１…軸受装置、２…軸受、３…軸受箱、４…中央軸受
箱、５…側部空間、６…軸受箱カバー、７…内輪、８…
外輪、１２…弾性部材、５０…プロペラシャフト、５２
…自在継手1 ... Bearing device, 2 ... Bearing, 3 ... Bearing box, 4 ... Central bearing box, 5 ... Side space, 6 ... Bearing box cover, 7 ... Inner ring, 8 ...
Outer ring, 12 ... Elastic member, 50 ... Propeller shaft, 52
… Universal joint

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】 転がり軸受の外輪の外周にリング状の軸
受箱を設け、前記外輪の外径面と前記軸受箱の前記外輪
が嵌合する内径面部分とを球面とした車両用プロペラシ
ャフトの軸受装置。1. A propeller shaft for a vehicle, wherein a ring-shaped bearing box is provided on an outer periphery of an outer ring of a rolling bearing, and an outer diameter surface of the outer ring and an inner diameter surface portion of the bearing box to which the outer ring fits are spherical. Bearing device.