JP2017129157A - Bearing with alignment ring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing with alignment ring capable of maintaining good lubricating performance while restricting the creep of an alignment ring and the bearing.SOLUTION: A bearing with alignment ring 10 includes an inner ring 2, an outer ring 3 whose outer peripheral face is formed as a protruded circular-arc face, a bearing 1 provided between the inner ring and the outer ring and constituted by a plurality of rolling elements for giving relative rotation to the inner ring and the outer ring, and an alignment ring 5 whose inner peripheral face is a recessed circular-arc face corresponding to the protruded circular-arc face and which is externally fitted to the outer ring. At least one first through-hole penetrating through the inner diameter side to the outer diameter side is provided in the outer ring, and at least one second through-hole having a phase corresponding to the first through-hole and penetrating through the inner diameter side to the outer diameter side is provided in the alignment ring. A cylindrical knock pin is provided in the through-holes over the pair of first through-hole and second through-hole. One end of the knock pin is internally fitted and fixed to either the first through-hole or the second through-hole, and the other end of the knock pin is arranged at a clearance to the through-hole.SELECTED DRAWING: Figure 1

Description

本発明は、調心輪付き軸受に関する。 The present invention relates to a bearing with a centering ring.

従来、調心輪付き軸受としては、内輪と、外周面が円弧面に形成された外輪と、前記内輪と前記外輪の間に設けられ、前記外輪とを相対回転させる複数の転動体によって構成された軸受と、前記外輪の外周面の円弧面に対応した凹状の円弧面を内周面に備えた調心輪を前記外輪に外嵌して構成している。更に、軸受内の潤滑性を維持するために外輪、調心輪に油穴を設け、調心輪付き軸受外から供給される潤滑剤を受け入れて潤滑性を維持している。（例えば、特許文献１を参照）。更に、調心輪と軸受とのクリープ等を防止することを目的として、調心輪に対する軸受の相対動を所定の範囲で許容するために、調心輪と外輪の油穴にわたってノックピンを設ける場合もある。 Conventionally, a bearing with a centering ring is composed of an inner ring, an outer ring having an outer peripheral surface formed in an arcuate surface, and a plurality of rolling elements provided between the inner ring and the outer ring and relatively rotating the outer ring. And a centering ring having a concave arc surface corresponding to the arc surface of the outer peripheral surface of the outer ring on the inner peripheral surface is externally fitted to the outer ring. Furthermore, in order to maintain the lubricity in the bearing, oil holes are provided in the outer ring and the aligning ring, and the lubricant supplied from the outside of the bearing with the aligning ring is received to maintain the lubricity. (For example, see Patent Document 1). Furthermore, in order to prevent creeping between the aligning ring and the bearing, a knock pin is provided over the oil hole in the aligning ring and the outer ring in order to allow the relative movement of the bearing to the aligning ring within a predetermined range. There is also.

特開２００３−３１４５４３号JP 2003-314543 A

しかしながら、ノックピンを備えた従来の調心輪付き軸受において、潤滑剤の供給路として設けている油穴の一部をノックピンを収容する穴として利用しているため、該油穴においては潤滑剤が供給されない。このため、軸受内部の全周にわたって円滑に潤滑剤を供給させることが困難となり、部分的に潤滑剤不良等による寿命低下の虞があった。 However, in a conventional bearing with a centering ring provided with a knock pin, a part of the oil hole provided as a lubricant supply path is used as a hole for receiving the knock pin. Not supplied. For this reason, it is difficult to smoothly supply the lubricant over the entire circumference of the bearing, and there is a possibility that the service life may be partially reduced due to a defective lubricant or the like.

本発明は、上記課題に鑑みてなされたものであり、調心輪と軸受とのクリープを規制した調心輪付き軸受において、良好な潤滑性能を確保することができる調心輪付き軸受を提供することを目的とする。 The present invention has been made in view of the above problems, and provides a bearing with a centering ring that can ensure good lubricating performance in a bearing with a centering ring that restricts creep between the centering ring and the bearing. The purpose is to do.

前記課題を解決するため本発明は、内輪と、外周面が凸状の円弧面に形成された外輪と、前記内輪と前記外輪の間に設けられ、前記外輪とを相対回転させる複数の転動体によって構成された軸受と、前記凸状の円弧面に対応した凹状の円弧面を内周面に備えた調心輪を、前記外輪に外嵌して構成した調心輪付き軸受において、内径側から外径側へ貫通する少なくとも１以上の第一の通孔を外輪に備え、前記第一の通孔に対応する位相に内径側から外径側に貫通する少なくとも１以上の第二の通孔を調心輪に備えるとともに、一対の前記第一の通孔と前記第二の通孔とにわたって通孔内に円筒状のノックピンが設けられ、前記ノックピンの一端は前記第一の通孔又は前記第二の通孔のいずれか一方に内嵌固定され、前記ノックピンの他端は通孔との間で隙間をもって配置されていることを特徴とする。 In order to solve the above problems, the present invention provides an inner ring, an outer ring having an outer peripheral surface formed in a convex arcuate surface, and a plurality of rolling elements provided between the inner ring and the outer ring and relatively rotating the outer ring. And a bearing with a centering ring that is formed by externally fitting a centering wheel having a concave arc surface corresponding to the convex arc surface on the inner peripheral surface to the outer ring. At least one or more first through holes penetrating from the inner diameter side to the outer diameter side in a phase corresponding to the first through holes. In the alignment ring, and a cylindrical knock pin is provided in the through hole across the pair of the first through hole and the second through hole, and one end of the knock pin is the first through hole or the It is fitted and fixed to one of the second through holes, and the other end of the knock pin is a through hole. Characterized in that it is arranged with a gap between.

本発明によれば、調心輪と軸受とのクリープを規制しつつ、良好な潤滑性能を維持できる調心輪付き軸受を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the bearing with a centering ring which can maintain favorable lubrication performance can be provided, regulating the creep of a centering ring and a bearing.

本発明に係る調心輪付き軸受の断面図である。It is sectional drawing of the bearing with a centering ring which concerns on this invention. 本発明の変形例に係る調心輪付き軸受の断面図である。It is sectional drawing of the bearing with a centering ring which concerns on the modification of this invention.

以下、実施形態について、図１を参照しながら説明する。本発明に係る調心輪付き軸受１０は、内輪２と、外周面が凸状の円弧面に形成された外輪３と、前記内輪２と前記外輪３の間に設けられ、前記外輪２と前記外輪３とを相対回転させる複数の転動体４によって構成される軸受１と、前記凸状の円弧面に対応した凹状の円弧面を内周面に有している調心輪５を、前記外輪３に外嵌して構成されている。 The embodiment will be described below with reference to FIG. A bearing with a centering ring 10 according to the present invention is provided between an inner ring 2, an outer ring 3 having an outer peripheral surface formed in a convex arcuate surface, and between the inner ring 2 and the outer ring 3. A bearing 1 constituted by a plurality of rolling elements 4 for rotating the outer ring 3 relative to each other, and an aligning ring 5 having a concave arc surface corresponding to the convex arc surface on the inner peripheral surface, the outer ring 3 is configured to be externally fitted.

外輪３には、内径側から外径側へ貫通する少なくとも１以上の第一の通孔３ａが外輪に円周状に設けられており、軸受１内に潤滑剤を供給するための油穴として利用している。 The outer ring 3 is provided with at least one or more first through holes 3a penetrating from the inner diameter side to the outer diameter side in the outer ring, and serves as an oil hole for supplying lubricant into the bearing 1. We are using.

調心輪５には、前記外輪に設けた第一の通孔３ａに対応する位相に、内径側から外径側に貫通する少なくとも１以上の第二の通孔５ａが円周状に設けられており、前記第一の通孔３ａとともに軸受１内に潤滑剤を供給するための油穴として機能している。 In the aligning ring 5, at least one or more second through holes 5a penetrating from the inner diameter side to the outer diameter side are provided circumferentially in a phase corresponding to the first through holes 3a provided in the outer ring. It functions as an oil hole for supplying the lubricant into the bearing 1 together with the first through hole 3a.

複数の対を成している前記第一の通孔３ａと前記第二の通孔５ａのうち1対において、前記第一の通孔３ａと前記第二の通孔５ａとにわたって、中空円筒状のノックピン６が収容され、第一の通孔３ａまたは第二の通孔５ａのいずれか一方にノックピンの一端が内嵌固定されている。また、前記ノックピンの一端が固定されていない第二の通孔５ａ又は第一の通孔３ａのいずれかに、ノックピンの他端が所定の隙間をもって遊挿されている。これによりノックピン内を潤滑剤の供給経路として利用することができるとともに、調心輪と外輪との相対動を一定量に許容をしている。 In one pair of the first through hole 3a and the second through hole 5a forming a plurality of pairs, a hollow cylindrical shape extends over the first through hole 3a and the second through hole 5a. The knock pin 6 is accommodated, and one end of the knock pin is fitted and fixed to either the first through hole 3a or the second through hole 5a. In addition, the other end of the knock pin is loosely inserted into the second through hole 5a or the first through hole 3a where one end of the knock pin is not fixed with a predetermined gap. As a result, the inside of the knock pin can be used as a lubricant supply path, and the relative movement between the aligning ring and the outer ring is allowed to a certain amount.

このような構成を採用することによって、調心輪付き軸受のクリープを防止しながら、良好な潤滑性能を維持することが出来る。 By adopting such a configuration, it is possible to maintain good lubrication performance while preventing creeping of the bearing with the aligning ring.

図２は本発明の変形例を示す断面図である。基本的な構造は先に述べた本発明の実施形態と同様であるため、異なる部分のみ以下に説明する。本変形例では、外輪に設けた第一の通孔の径を部分的に異ならせて段付き形状としている。外輪の外周面側の通孔３ｂの径よりも外輪内周側の通孔３ｃの径が小さくなるように設けている。更に、通孔３ｃの径はノックピンの外径よりも小さくなるように構成されている。このような構造としたため、ノックピン組付け作業時等に誤ってノックピンが通孔３ｃを通過して、軸受内部に落下することが防止できる。 FIG. 2 is a cross-sectional view showing a modification of the present invention. Since the basic structure is the same as that of the embodiment of the present invention described above, only different portions will be described below. In this modification, the diameter of the first through hole provided in the outer ring is partially varied to form a stepped shape. The diameter of the through hole 3c on the inner peripheral side of the outer ring is smaller than the diameter of the through hole 3b on the outer peripheral surface side of the outer ring. Further, the diameter of the through hole 3c is configured to be smaller than the outer diameter of the knock pin. Due to such a structure, it is possible to prevent the knock pin from accidentally passing through the through hole 3c and falling into the bearing during assembly of the knock pin.

ここまで説明してきた本実施形態は、本発明の一実施形態にすぎず、何等これらに限定して解釈されるものではなく、本発明の範囲内で適宜設定変更可能である。 The present embodiment described so far is merely one embodiment of the present invention, and is not construed as being limited to these, and can be appropriately changed within the scope of the present invention.

１ 軸受
２ 内輪
３ 外輪
４ 転動体
５ 調心輪
６ ノックピン
１０ 調心輪付き軸受

DESCRIPTION OF SYMBOLS 1 Bearing 2 Inner ring 3 Outer ring 4 Rolling element 5 Alignment ring 6 Knock pin 10 Bearing with alignment ring

Claims (1)

内輪と、外周面が凸状の円弧面に形成された外輪と、前記内輪と前記外輪の間に設けられ、前記外輪とを相対回転させる複数の転動体によって構成された軸受と、前記凸状の円弧面に対応した凹状の円弧面を内周面に備えた調心輪を、前記外輪に外嵌して構成した調心輪付き軸受において、内径側から外径側へ貫通する少なくとも１以上の第一の通孔を外輪に備え、前記第一の通孔に対応する位相に内径側から外径側に貫通する少なくとも１以上の第二の通孔を調心輪に備えるとともに、一対の前記第一の通孔と前記第二の通孔とにわたって通孔内に円筒状のノックピンが設けられ、前記ノックピンの一端は前記第一の通孔又は前記第二の通孔のいずれか一方に内嵌固定され、前記ノックピンの他端は通孔との間で隙間をもって配置されていることを特徴とする調心輪付き軸受。 An inner ring, an outer ring having an outer peripheral surface formed in a convex arcuate surface, a bearing provided between the inner ring and the outer ring, and a plurality of rolling elements that relatively rotate the outer ring; and the convex shape At least one or more penetrating from the inner diameter side to the outer diameter side in a bearing with a centering ring formed by fitting the aligning ring having the concave arc surface corresponding to the arc surface on the inner peripheral surface to the outer ring The first through hole is provided in the outer ring, and the aligning ring is provided with at least one second through hole penetrating from the inner diameter side to the outer diameter side in a phase corresponding to the first through hole. A cylindrical knock pin is provided in the through hole across the first through hole and the second through hole, and one end of the knock pin is provided on either the first through hole or the second through hole. The other end of the knock pin is disposed with a gap between the through hole. Aligning wheels with bearings, characterized in that.

Images