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JP4660307B2 - Bearing fitting structure - Google Patents

Bearing fitting structure Download PDF

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Publication number
JP4660307B2
JP4660307B2 JP2005212440A JP2005212440A JP4660307B2 JP 4660307 B2 JP4660307 B2 JP 4660307B2 JP 2005212440 A JP2005212440 A JP 2005212440A JP 2005212440 A JP2005212440 A JP 2005212440A JP 4660307 B2 JP4660307 B2 JP 4660307B2
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Japan
Prior art keywords
shaft
bearing
fixing bolt
plate
fitting structure
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Expired - Fee Related
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JP2005212440A
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JP2007032591A (en
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賢 貴島
哲雄 池田
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Hino Motors Ltd
JTEKT Corp
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Hino Motors Ltd
JTEKT Corp
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  • Mounting Of Bearings Or Others (AREA)

Description

本発明は狭隘な空間に適した軸受嵌装構造に関するものである。   The present invention relates to a bearing fitting structure suitable for a narrow space.

円錐ころ軸受、またはアンギュラ玉軸受などのように、シャフトに外嵌する内輪、ギヤやプーリなどの回転部品の中心に嵌め込まれる外輪、及び内外両輪の間に介在する複数の転動体などで構成される転がり軸受を組み付ける際には、内外両輪に予圧(軸方向に常に加わる荷重)を付与することにより、支持剛性を高めるとともに内外両輪と転動体の隙間が無くなるようにして、回転部品の振動や騒音の発生を防いでいる。   Consists of an inner ring that fits outside the shaft, an outer ring that fits in the center of rotating parts such as gears and pulleys, and a plurality of rolling elements interposed between the inner and outer rings, such as a tapered roller bearing or an angular ball bearing. When assembling rolling bearings, preload (a load that is always applied in the axial direction) is applied to both the inner and outer wheels to increase the support rigidity and eliminate the gap between the inner and outer wheels and the rolling element, thereby reducing the vibration of rotating parts. Noise generation is prevented.

転がり軸受に予圧を付与する場合、転がり軸受を嵌装したシャフトにナットを螺合し、該ナットを軸受の内輪端面に向けて締め付ける手法が採られている(例えば、特許文献1参照)。   When preload is applied to a rolling bearing, a method is employed in which a nut is screwed onto a shaft fitted with the rolling bearing and the nut is tightened toward an inner ring end surface of the bearing (see, for example, Patent Document 1).

図6乃至図8は従来の軸受嵌装構造の一例を示すものであって、基端部にフランジ1を有し且つ回転部品2のハブ3に嵌め込まれる一対の転がり軸受4及びその内輪に挟まれるスペーサ5を嵌装したシャフト6と、該シャフト6の先端部に螺着したロックナット7とを備えている(転がり軸受4によってはスペーサ5を用いない場合もある)。   6 to 8 show an example of a conventional bearing fitting structure, which is sandwiched between a pair of rolling bearings 4 having a flange 1 at a base end portion and fitted into a hub 3 of a rotating component 2 and its inner ring. And a lock nut 7 screwed to the tip of the shaft 6 (the spacer 5 may not be used depending on the rolling bearing 4).

回転部品2には、ハブ3の一端側から嵌め込まれる一方の転がり軸受4の外輪とハブ3の他端側から嵌め込まれる他方の転がり軸受4の外輪とで挟まれるストッパ8が、一体的に形成してある。   The rotating component 2 is integrally formed with a stopper 8 sandwiched between the outer ring of one rolling bearing 4 fitted from one end side of the hub 3 and the outer ring of the other rolling bearing 4 fitted from the other end side of the hub 3. It is.

シャフト6には、その先端面から基端面へ貫通し且つ当該シャフト6を取付対象物9に締結するための固定用ボルト10が挿通される孔11が穿設してあり、また、シャフト6の基端面からは、位置案内用のボス12が取付対象物9側へ突き出ている。   The shaft 6 is provided with a hole 11 that penetrates from the distal end surface to the proximal end surface and through which a fixing bolt 10 for fastening the shaft 6 to the attachment object 9 is inserted. From the base end surface, the position guide boss 12 protrudes toward the attachment object 9.

ハブ3の一端側に嵌め込まれる一方の転がり軸受4の内輪は、シャフト6のフランジ1端面に当接し、ハブ3の他端側に嵌め込まれる他方の転がり軸受4の内輪とロックナット7との間には、歯付座金である廻り止め用のワッシャ13が介在させてある。   The inner ring of one rolling bearing 4 fitted to one end side of the hub 3 is in contact with the end face of the flange 1 of the shaft 6, and between the inner ring of the other rolling bearing 4 fitted to the other end side of the hub 3 and the lock nut 7. Is provided with a washer 13 for preventing rotation, which is a toothed washer.

つまり、ロックナット7をシャフト6に締め付けると、フランジ1とスペーサ5に内輪が挟まれている一方の転がり軸受4、並びにワッシャ13とスペーサ5に内輪が挟まれている他方の転がり軸受4のそれぞれに対して予圧が付与されることになる。
特開2003−301853号公報
That is, when the lock nut 7 is tightened to the shaft 6, one rolling bearing 4 in which the inner ring is sandwiched between the flange 1 and the spacer 5, and the other rolling bearing 4 in which the inner ring is sandwiched between the washer 13 and the spacer 5. A preload is applied to the.
JP 2003-301853 A

しかしながら、図6乃至図8に示す軸受嵌装構造をギヤトレーンのような動力伝達手段に用いるのにあたり、その設置場所が狭隘であると、シャフト6の先端部に螺着してあるロックナット7が近隣の他の部品14などと干渉してしまうことが懸念される。   However, when the bearing fitting structure shown in FIGS. 6 to 8 is used for power transmission means such as a gear train, if the installation place is narrow, the lock nut 7 screwed to the tip of the shaft 6 is There is concern about interference with other parts 14 in the vicinity.

本発明は上述した実情に鑑みてなしたもので、狭隘な空間に適した軸受嵌装構造を提供することを目的としている。   The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a bearing fitting structure suitable for a narrow space.

上記目的を達成するため本発明は、予圧を付与すべき転がり軸受が嵌装されるシャフトと、該シャフトの先端面から基端面へ貫通し且つ取付対象物に螺着するシャフト固定用ボルトと、該シャフト固定用ボルトの頭部が収まる凹部が形作られ且つ前記シャフトの先端面に向き合って転がり軸受の内輪端面に当接するプレートと、該プレートを貫通してシャフトに螺着する軸受固定用ボルとを備えた構成を採る。 In order to achieve the above object, the present invention includes a shaft on which a rolling bearing to which preload is to be applied is fitted, a shaft fixing bolt that penetrates from the distal end surface to the proximal end surface of the shaft and is screwed to an attachment object, A recess in which a head portion of the shaft fixing bolt is accommodated , and a plate that faces the tip end surface of the shaft and contacts the inner ring end surface of the rolling bearing; and a bearing fixing bolt that passes through the plate and is screwed to the shaft. The structure with is adopted.

また、シャフトの端面及びプレートに、互いに嵌合して周方向への相対変位を規制する凹凸を形作る。In addition, the end face of the shaft and the plate are formed with concavities and convexities that are fitted together to restrict relative displacement in the circumferential direction.

つまり、軸受固定用ボルトをシャフトに締め付けて、転がり軸受の内輪端面にプレートを押圧し、当該転がり軸受に予圧を付与する。   That is, the bearing fixing bolt is fastened to the shaft, the plate is pressed against the inner ring end face of the rolling bearing, and a preload is applied to the rolling bearing.

本発明の軸受嵌装構造によれば、下記のような優れた効果を奏し得る。   According to the bearing fitting structure of the present invention, the following excellent effects can be obtained.

(1)軸受固定用ボルトをシャフトに締め付けることによって、プレートを転がり軸受の内輪端面に押圧し、当該転がり軸受に予圧を付与するので、ロックナットなどの部品をシャフト外周に螺着させる必要がなく、この分だけ近隣の他の部品に対する空間的な余裕が生じ、狭隘な空間への順応性が高い。   (1) By tightening the bearing fixing bolt to the shaft, the plate is pressed against the inner ring end surface of the rolling bearing and preload is applied to the rolling bearing, so there is no need to screw parts such as lock nuts around the shaft. Thus, there is a space for other parts in the vicinity, and the adaptability to a narrow space is high.

(2)また、互いに嵌合して周方向への相対変位を規制する凹凸をシャフトの端面及びプレートに形作る構成を加えれば、軸受固定用ボルトの弛みを防げる。   (2) Moreover, if the structure which forms the unevenness | corrugation which mutually fits and regulates the relative displacement to the circumferential direction is formed in the end surface of a shaft and a plate, slack of a bolt for bearing fixation can be prevented.

以下、本発明の実施の形態を図面に基づき説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図1乃至図4は本発明の軸受嵌装構造の第1の例を示すもので、基端部にフランジ1を有し且つ回転部品2のハブ3に嵌め込まれる一対の転がり軸受4及びその内輪に挟まれるスペーサ5を嵌装したシャフト15と、該シャフト15の先端面に向き合い且つハブ3の他端側(シャフト15を基準にして見るとフランジ1が無い側)から嵌め込まれる他方の転がり軸受4の内輪端面に当接するプレート16と、該プレート16を貫通してシャフト15に螺着する固定用ボルト17とを備えている(転がり軸受4によってはスペーサ5を用いない場合もある)。   1 to 4 show a first example of a bearing fitting structure according to the present invention. A pair of rolling bearings 4 having a flange 1 at a base end and fitted into a hub 3 of a rotating component 2 and an inner ring thereof. A shaft 15 fitted with a spacer 5 sandwiched between them, and the other rolling bearing facing the tip surface of the shaft 15 and fitted from the other end side of the hub 3 (the side without the flange 1 when viewed from the shaft 15). 4 is provided with a plate 16 in contact with the end face of the inner ring 4 and a fixing bolt 17 that passes through the plate 16 and is screwed onto the shaft 15 (the spacer 5 may not be used depending on the rolling bearing 4).

ハブ3の一端側から嵌め込まれる一方の転がり軸受4の外輪、及びハブ3の他端側から嵌め込まれる他方の転がり軸受4の外輪は、回転部品2に形成してあるストッパ8に当接し、ハブ3の一端側に嵌め込まれる一方の転がり軸受4の内輪は、シャフト15のフランジ1端面に当接している。   The outer ring of one rolling bearing 4 fitted from one end side of the hub 3 and the outer ring of the other rolling bearing 4 fitted from the other end side of the hub 3 abut against a stopper 8 formed on the rotating component 2, and the hub The inner ring of one of the rolling bearings 4 fitted to one end side of 3 is in contact with the end face of the flange 1 of the shaft 15.

シャフト15には、その先端面中心から基端面に向けて延び且つ前記固定用ボルト17が螺着するねじ穴18と、当該ねじ穴18の位置を外して先端面から基端面へ貫通し且つシャフト15を取付対象物9に締結するための固定用ボルト10が挿通される孔11とが穿設してある。   The shaft 15 extends from the center of the front end surface toward the base end surface, and the screw hole 18 into which the fixing bolt 17 is screwed. The position of the screw hole 18 is removed and the shaft 15 penetrates from the front end surface to the base end surface. A hole 11 through which a fixing bolt 10 for fastening 15 to the attachment object 9 is inserted.

シャフト15の先端面には、ねじ穴18及び孔11の位置を含んでシャフト15径方向へ延びる凸部19が形作ってあり、シャフト15の基端面からは、位置案内用のボス12が取付対象物9側へ突き出ている。   A convex portion 19 that extends in the radial direction of the shaft 15 including the positions of the screw holes 18 and the holes 11 is formed on the distal end surface of the shaft 15, and the position guide boss 12 is attached to the base end surface of the shaft 15. It protrudes to the object 9 side.

プレート16には、その中心を貫通し且つ固定用ボルト17を挿通するための孔20が穿設してある。   The plate 16 has a hole 20 that passes through the center thereof and through which the fixing bolt 17 is inserted.

プレート16のシャフト15相対部位には、シャフト15の凸部19に嵌まり合う凹部21と、シャフト15の孔11に挿通した固定用ボルト10の頭部が収まる凹部22とが形作ってある。   A portion of the plate 16 relative to the shaft 15 is formed with a concave portion 21 that fits into the convex portion 19 of the shaft 15 and a concave portion 22 in which the head of the fixing bolt 10 inserted through the hole 11 of the shaft 15 is received.

固定用ボルト17とプレート16の間には、歯付座金である廻り止め用のワッシャ23が介在させてある。   Between the fixing bolt 17 and the plate 16, a non-rotating washer 23 which is a toothed washer is interposed.

この軸受嵌装構造では、固定用ボルト17をプレート16の孔20に挿通し、シャフト15のねじ穴18に螺着したうえ締め付けると、フランジ1とスペーサ5に内輪が挟まれている一方の転がり軸受4、並びにプレート16とスペーサ5に内輪が挟まれている他方の転がり軸受4のそれぞれに対して予圧が付与されることになる。   In this bearing fitting structure, when the fixing bolt 17 is inserted into the hole 20 of the plate 16, screwed into the screw hole 18 of the shaft 15, and tightened, one rolling in which the inner ring is sandwiched between the flange 1 and the spacer 5 is performed. Preload is applied to each of the bearing 4 and the other rolling bearing 4 in which the inner ring is sandwiched between the plate 16 and the spacer 5.

更に、ワッシャ23の歯のうちの一つを固定用ボルト17の頂部に形成してある溝24に嵌まり込むように折り曲げる。   Further, one of the teeth of the washer 23 is bent so as to fit into a groove 24 formed on the top of the fixing bolt 17.

つまり、固定用ボルト17をシャフト15に締め付けると、プレート16が転がり軸受4に予圧を付与するので、図6乃至図8におけるロックナット7のような部品をシャフト15外周に螺着させる必要がなく、この分だけ近隣の他の部品14に対する空間的な余裕が生じ、狭隘な空間への順応性が高い。   That is, when the fixing bolt 17 is fastened to the shaft 15, the plate 16 applies a preload to the rolling bearing 4, so there is no need to screw parts such as the lock nut 7 in FIGS. 6 to 8 around the shaft 15. Thus, there is a space for other parts 14 in the vicinity, and the adaptability to a narrow space is high.

凸部19と凹部21が互いに嵌合してシャフト15及びプレート16の周方向への相対変位を規制し、ワッシャ23の歯が溝24に嵌まり込んでワッシャ23及び固定用ボルト17の周方向への相対変位を規制するので、シャフト15に締め付けてある固定用ボルト17の弛みを防げる。   The convex portion 19 and the concave portion 21 are fitted to each other to restrict relative displacement in the circumferential direction of the shaft 15 and the plate 16, and the teeth of the washer 23 are fitted into the grooves 24, so that the washer 23 and the fixing bolt 17 are circumferentially arranged. Since the relative displacement is restricted, loosening of the fixing bolt 17 fastened to the shaft 15 can be prevented.

図5は本発明の軸受嵌装構造の第2の例を示すもので、先述した第1の例における凸部19を有するシャフト15及び凹部21を有するプレート16に代えて、シャフト25とプレート26を用いており、図中、第1の例と同一の符号を付した部分は同一物を表している。   FIG. 5 shows a second example of the bearing fitting structure of the present invention. Instead of the shaft 15 having the convex portion 19 and the plate 16 having the concave portion 21 in the first example, the shaft 25 and the plate 26 are replaced. In the figure, the same reference numerals as those in the first example denote the same parts.

シャフト25には、シャフト15と同様に、固定用ボルト17を螺着するねじ穴18が穿設してあり、シャフト25の先端面の周方向所定個所には凸部27が形作ってある。   As with the shaft 15, a screw hole 18 into which the fixing bolt 17 is screwed is formed in the shaft 25, and a convex portion 27 is formed at a predetermined position in the circumferential direction of the tip surface of the shaft 25.

プレート26には、プレート16と同様に、固定用ボルト17を挿通するための孔20が穿設してある。   Similar to the plate 16, the plate 26 has holes 20 through which the fixing bolts 17 are inserted.

プレート26のシャフト25相対部位には、シャフト25の凸部27に嵌まり合う凹部28が形作ってあり、固定用ボルト17とプレート26の間には、廻り止め用のワッシャ23が介在させてある。   A concave portion 28 that fits into the convex portion 27 of the shaft 25 is formed at a position corresponding to the shaft 25 of the plate 26, and a washer 23 for preventing rotation is interposed between the fixing bolt 17 and the plate 26. .

また、図5におけるシャフト25及びプレート26の水平断面は、図2と同様な形状を呈する。   Moreover, the horizontal cross section of the shaft 25 and the plate 26 in FIG. 5 exhibits the same shape as FIG.

この軸受嵌装構造では、固定用ボルト17をプレート26の孔20に挿通し、シャフト25のねじ穴18に螺着したうえ締め付けると、フランジ1とスペーサ5に内輪が挟まれている一方の転がり軸受4、並びにプレート26とスペーサ5に内輪が挟まれている他方の転がり軸受4のそれぞれに対して予圧が付与されることになる。   In this bearing fitting structure, when the fixing bolt 17 is inserted into the hole 20 of the plate 26 and screwed into the screw hole 18 of the shaft 25 and then tightened, one rolling in which the inner ring is sandwiched between the flange 1 and the spacer 5 is achieved. Preload is applied to the bearing 4 and the other rolling bearing 4 in which the inner ring is sandwiched between the plate 26 and the spacer 5.

つまり、固定用ボルト17をシャフト25に締め付けると、プレート26が転がり軸受4に予圧を付与するので、図6乃至図8におけるロックナット7のような部品をシャフト25外周に螺着させる必要がなく、この分だけ近隣の他の部品14に対する空間的な余裕が生じ、狭隘な空間への順応性が高い。   That is, when the fixing bolt 17 is fastened to the shaft 25, the plate 26 applies a preload to the rolling bearing 4, so that there is no need to screw parts such as the lock nut 7 in FIGS. Thus, there is a space for other parts 14 in the vicinity, and the adaptability to a narrow space is high.

凸部27と凹部28が互いに嵌合してシャフト25及びプレート26の周方向への相対変位を規制し、第1の例と同様にワッシャ23の歯で当該ワッシャ23及び固定用ボルト17の周方向への相対変位を規制するので、シャフト25に締め付けてある固定用ボルト17の弛みを防げる。   The convex portion 27 and the concave portion 28 are fitted to each other to restrict the relative displacement in the circumferential direction of the shaft 25 and the plate 26, and the washer 23 and the fixing bolt 17 are surrounded by the teeth of the washer 23 as in the first example. Since relative displacement in the direction is restricted, loosening of the fixing bolt 17 fastened to the shaft 25 can be prevented.

なお、本発明の軸受嵌装構造は、上述した実施の形態のみに限定されるものではなく、本発明の要旨を逸脱しない範囲において変更を加え得ることは勿論である。   It should be noted that the bearing fitting structure of the present invention is not limited to the above-described embodiment, and it is needless to say that changes can be made without departing from the gist of the present invention.

本発明の軸受嵌装構造は、様々な回転部品の支持に適用できる。   The bearing fitting structure of the present invention can be applied to support various rotating parts.

本発明の軸受嵌装構造の第1の例を示す縦断面図である。It is a longitudinal cross-sectional view which shows the 1st example of the bearing fitting structure of this invention. 図1のII−II矢視図である。It is an II-II arrow line view of FIG. 図1のIII-III矢視図である。It is the III-III arrow line view of FIG. 図1に関連する要素部品の分解図である。It is an exploded view of the component parts relevant to FIG. 本発明の軸受嵌装構造の第2の例を示す縦断面図である。It is a longitudinal cross-sectional view which shows the 2nd example of the bearing fitting structure of this invention. 従来の軸受嵌装構造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 conventional bearing fitting structure. 図6のVII−VII矢視図である。It is a VII-VII arrow line view of FIG. 図6のVIII-VIII矢視図である。It is a VIII-VIII arrow line view of FIG.

符号の説明Explanation of symbols

4 転がり軸受
10 固定用ボルト(シャフト固定用ボルト)
15 シャフト
16 プレート
17 固定用ボルト(軸受固定用ボルト)
19 凸部
21 凹部
22 凹部
25 シャフト
26 プレート
27 凸部
28 凹部
4 Rolling bearing 10 Fixing bolt (shaft fixing bolt)
15 Shaft 16 Plate 17 Fixing bolt (bearing fixing bolt)
19 Convex part 21 Concave part
22 concave portion 25 shaft 26 plate 27 convex portion 28 concave portion

Claims (2)

予圧を付与すべき転がり軸受が嵌装されるシャフトと、該シャフトの先端面から基端面へ貫通し且つ取付対象物に螺着するシャフト固定用ボルトと、該シャフト固定用ボルトの頭部が収まる凹部が形作られ且つ前記シャフトの先端面に向き合って転がり軸受の内輪端面に当接するプレートと、該プレートを貫通してシャフトに螺着する軸受固定用ボルとを備えてなることを特徴とする軸受嵌装構造。 A shaft on which a rolling bearing to which preload is to be applied is fitted, a shaft fixing bolt that penetrates from the distal end surface to the proximal end surface of the shaft and is screwed to an attachment object, and a head portion of the shaft fixing bolt are accommodated. A bearing comprising: a plate formed with a recess and facing the inner ring end surface of the rolling bearing so as to face the tip surface of the shaft; and a bearing fixing bolt that passes through the plate and is screwed to the shaft. Fitting structure. シャフトの端面及びプレートに、互いに嵌合して周方向への相対変位を規制する凹凸を形作った請求項1に記載の軸受嵌装構造。 The bearing fitting structure according to claim 1, wherein the shaft end face and the plate are formed with concavities and convexities that are fitted together to restrict relative displacement in the circumferential direction .
JP2005212440A 2005-07-22 2005-07-22 Bearing fitting structure Expired - Fee Related JP4660307B2 (en)

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DE102007044702B4 (en) * 2007-09-19 2016-03-17 Ab Skf camp
DE102009032294A1 (en) * 2009-07-09 2011-01-13 Aktiebolaget Skf bearing arrangement
CN112377523B (en) * 2020-12-29 2022-04-22 哈尔滨哈轴精密轴承制造有限公司 Bearing group seat capable of accurately adjusting clearance

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JPH0427217U (en) * 1990-06-28 1992-03-04
JP2004526107A (en) * 2001-03-30 2004-08-26 ハンセン・トランスミッションズ・インターナショナル・ナムローゼフェンノートシャップ Method of forming a tapered roller bearing assembly

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JPS57113724U (en) * 1980-12-31 1982-07-14
JPH0476229A (en) * 1990-07-19 1992-03-11 Toyota Autom Loom Works Ltd Low noise structure for rolling bearing

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JPH0427217U (en) * 1990-06-28 1992-03-04
JP2004526107A (en) * 2001-03-30 2004-08-26 ハンセン・トランスミッションズ・インターナショナル・ナムローゼフェンノートシャップ Method of forming a tapered roller bearing assembly

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