CN103256312A

CN103256312A - Rolling bearing

Info

Publication number: CN103256312A
Application number: CN2013100339694A
Authority: CN
Inventors: 赖纳·施罗德
Original assignee: Schaeffler Technologies AG and Co KG
Current assignee: Fifth Schaeffler Investment Management & CoKg GmbH
Priority date: 2012-02-21
Filing date: 2013-01-29
Publication date: 2013-08-21
Anticipated expiration: 2033-01-29
Also published as: CN103256312B; DE102012202592A1

Abstract

The invention relates to a rolling bearing (9) which comprises a bearing ring (1), a lot of rolling bodies (10) and a sealing member (13) fixed on the bearing ring (1). The rolling bodies roll around the rotating axis (3) of the rolling bearing on a rolling path (2) of the bearing ring (1). According to the invention, the sealing member (13) is bonded on an axial transverse plane (4) or a cover plane of the bearing ring (1).

Description

Rolling bearing

Technical field

The present invention relates to a kind of rolling bearing, it has race ring, a large amount of rolling element and is fixed on Sealing on the race ring, and described rolling element rolls at the raceway of the race ring spin axis around rolling bearing.

Background technique

This rolling bearing of the varied form of cicada in the prior art, wherein Sealing will stop dirt to infiltrate rolling bearing and/or lubricant medium overflows from rolling bearing.

For example by a kind of self-aligning roller bearing of DE60306638T2 cicada, it comprises the outer ring, this outer ring has for the raceway that centers on the rolling element of spin axis with duplex bearing row (Lagerreihen), and also comprising two Sealings, the seal is fixed on this outer ring at the axial end portion of outer ring.These Sealings comprise dihedral and ring plate, and they are pressed in according to the form of implementation of DE60306638T2 on the convex shoulder of outer cover of outer ring.The shortcoming of the solution of DE60306638T2 is: weakened thus power is passed to the required outer cover of housing, the installation of Sealing is bothersome, the accurate pointing of Sealing and therefore sealing effect itself can only regulate difficultly, and Sealing can slide in rolling bearing work.

Summary of the invention

The present invention based on task be to disclose such rolling bearing, this rolling bearing has been avoided the shortcoming of prior art recited above, especially this rolling bearing provides the Sealing with higher confining force, and wherein Sealing can simply and inexpensively be installed.

According to the present invention, this task is solved by the feature of independent claims.Thereby such rolling bearing is characterised in that described Sealing is bonded on the axial end or cover of described race ring.

The present invention has recognized that, determining under the applicable cases, Sealing is bonded in has guaranteed fully fixing to Sealing on the race ring, especially can realize the high confining force of Sealing on race ring, and therefore be very simple, comprise less member and therefore solution with low cost.

At this, Sealing can be bonded on the inner ring or be bonded on the outer ring, and described Sealing preferably is bonded on the fixing race ring.For example, one-component jointing material or two component jointing material are set to jointing material.

Described rolling bearing can be annular bearing with rolling contact or axial antifriction bearing.The present invention for example can use in radially self-aligning roller bearing, tapered roller bearing, roller bearing or ball bearing.If rolling bearing is sealed fully, then preferably equally Sealing is bonded on second end face of race ring according to the present invention.

Under the annular bearing with rolling contact situation, described Sealing preferably is bonded on the end face, and under the axial antifriction bearing situation, described Sealing preferably is bonded on the cover.

In addition, be bonded on the axial end (i.e. the face of outwards reeling about axial bearing mid point) by Sealing, can realize using the rolling bearing of conventional radial rolling bearing, especially standardization (for example DIN).Like this, with regard to Sealing fixing and do not require in the rolling element space in (zone between the race ring of rolling bearing, rolling element rolls) that the position is arranged in this zone.Also can avoid meshing (Hintergreifen) race ring from behind, for example Sealing is fixed on the cover of annular bearing with rolling contact.

Draw other advantages and feature by dependent claims.

Be set to the seal disc that described Sealing has metal reinforced body and is made of synthetic rubber, and described adding on the axial end that solid is bonded in described race ring according to a preferred implementing form.Metal reinforced body preferably directly is bonded on the race ring or directly is bonded on the end face of race ring, and is used for improving stability or shape and the positional accuracy of Sealing.Seal disc typically has one or more sealing lips, and described sealing lip for example contacts second race ring from the raceway side direction of second race ring again.Seal disc can only be connected to diametrically and add on the solid, perhaps will add solid according to optimal way and radially extend, preferably covers along its complete radially extending at least one side along it.Described seal disc especially can vulcanize to described and adds on the solid.

Yet also can consider in principle to be set to, Sealing has the seal disc that is made of synthetic rubber, and seal disc is bonded on the axial end of race ring, is characterised in that especially described Sealing does not have metal reinforced body.This is simple especially and so cheap structure.

The advantage that the present invention has is that Sealing can easily be fixed on the standardized rolling bearing (afterwards).In order especially not change the axial dimension of this rolling bearing, race ring can have convex shoulder at its end face, the axial depth of convex shoulder is greater than or equal to Sealing and is bonded in extending axially in the zone on the race ring thereon at the Sealing of the seal, makes Sealing stretch out in the axial direction and is no more than race ring.The seal finishes with race ring with flushing, and is perhaps inside in the axial direction with respect to race ring, that is, and and towards the indentation of axial antifriction bearing center.Except using under the predetermined installation situation this rolling bearing, this fixing of Sealing also avoided damaging Sealing when transportation or installation rolling bearing.

Though comparing with the conventional rolling bearing with Sealing, rolling bearing according to the present invention has lot of advantages.Yet what shown is, especially under the situation of big bearing because binding face is big, owing to will carry out accurate measurement and jointing material is evenly distributed when making improperly to jointing material, the bonding meeting of Sealing causes Sealing with respect to the spin axis decentraction and/or can cause blow-by in the adhering junction.Therefore, according to a particularly advantageous form of implementation, in order to improve adhering junction, especially also be set in order to improve confining force and sealing effect, described race ring has at least one recess at its end face, and wherein said at least one recess is at least part of to be covered by described Sealing.Described recess can realize holding jointing material.Like this, during Sealing is installed, only jointing material is introduced in the recess targetedly.

If end face has convex shoulder, then at least one recess can be introduced in the convex shoulder of end face.

Described recess can have diversified shape.For example may also be considered that described at least one recess is made of one or more grooves around spin axis.By the mode of groove unbroken loop around spin axis, can be implemented between Sealing and the race ring very uniformly that material fit is connected, and also can obtain maximum sealing effect.Groove can move towards with one heart with respect to spin axis, yet also the helical groove with a plurality of circles can be set.

According to a form of implementation, at least one recess is covered by the radially extension of Sealing along groove fully.Thereby the jointing material in recess contacts Sealing/race ring fully, thereby realizes maximum jointing material utilization, and stops jointing material to overflow.

What shown is, dark excessively recess is inappropriate, because jointing material need be crossed long-time sclerosis, and flat excessively recess is merely able to realize inadequate confining force.Between the 0.1mm to 0.7mm the time, can obtain optimum efficiency in the degree of depth of recess.

According to a form of implementation, rolling bearing has second race ring, and described Sealing seals the rolling element space between described race ring and described second race ring.At this preferably, two Sealings can be bonded on the axial end portion of rolling bearing.

Description of drawings

Further describe the present invention below in conjunction with accompanying drawing.Wherein:

Fig. 1 illustrates half of axial cross section of race ring;

Fig. 2 illustrates the race ring among Fig. 1;

Fig. 3 illustrates the amplification profile of the race ring among Fig. 1; And

Fig. 4 illustrates according to rolling bearing of the present invention.

Embodiment

Fig. 1, Fig. 2 and Fig. 3 are illustrated in according to the race ring 1 that uses in the rolling bearing of the present invention.Race ring 1 is the outer ring of self-aligning roller bearing and has for the raceway 2 of unshowned rolling element around spin axis 3 rollings of rolling bearing.

Race ring 1 has two axial ends 4,5, and they comprise

convex shoulder

6,7 respectively, and convex

shoulder

6,7 upwards forms in the axial indentation portion of inside by the footpath of race ring 1 on its end face 4,5.

Especially as can seeing among Fig. 3, recess 8 is centrally located in the

convex shoulder

6,7 diametrically with the form of unbroken loop around the groove of spin axis 3.During unshowned Sealing is installed, with groove part ground or fully fill jointing material, wherein except groove, do not apply jointing material in the ideal case diametrically.After axially laying the annular seal part, Sealing is expressed on the end face 4,5 vertically, harden until jointing material.

Fig. 4 illustrates an embodiment according to rolling bearing 9 of the present invention, wherein schematically shows the part of axial cross section.

Rolling bearing 9 also has a large amount of rolling elements 10 except having the race ring 1 according to Fig. 1 to Fig. 3, described rolling element 10 rolls at the raceway 2 of race ring 1 and second raceway 12 of second race ring 11.

Sealing 13 comprises metal reinforced body 14 and the seal disc 15 that is made of synthetic rubber, and seal disc 15 for example can be 14 bonding with metal reinforced body, twist and connect or vulcanize to metal reinforced body 14.

In Sealing 13 is bonded in zone on the race ring 1, Sealing 13 extend axially axial depth 17 less than convex shoulder.

The reference character table

1 race ring

2 raceways

3 spin axiss

4 end faces

5 end faces

6 convex shoulders

7 convex shoulders

8 recess

9 rolling bearings

10 rolling elements

11 second race rings

12 second raceways

13 Sealings

14 add solid

15 seal discs

The axial width of 16 Sealings

The axial depth of 17 convex shoulders

Claims

1. rolling bearing (9), have race ring (1), a large amount of rolling element (10) and be fixed on Sealing (13) on the described race ring (1), the spin axis (3) that the raceway (2) of described rolling element (10) in described race ring (1) centers on described rolling bearing rolls, it is characterized in that described Sealing (13) is bonded on the axial end face (4) or cover of described race ring (1).

2. rolling bearing according to claim 1 (9), it is characterized in that, described Sealing (13) has the seal disc (15) that adds solid (14) and be made of synthetic rubber of metal, and described adding on the axial end face (4) that solid (14) is bonded in described race ring.

3. rolling bearing according to claim 2 (9) is characterized in that, described adding on the axial end face (4) that solid (14) directly is bonded in described race ring.

4. according to the described rolling bearing of one of claim 1 to 3 (9), it is characterized in that, described race ring (1) has convex shoulder (6,7) at its end face (4), the axial depth (17) of described convex shoulder (6,7) is greater than or equal to described Sealing (13) extending axially in a zone of described Sealing (13) (16), described Sealing (13) is bonded on the described race ring (1) in this zone, thereby described Sealing (13) stretches out in the axial direction and is no more than described race ring (1).

5. according to the described rolling bearing of one of claim 1 to 4 (9), it is characterized in that, described race ring (1) has at least one recess (8) at its end face (4), and wherein said at least one recess (8) is at least part of to be covered by described Sealing (13).

6. according to claim 4 and 5 described rolling bearings (9), it is characterized in that described at least one recess (8) is introduced in the convex shoulder (6,7) of described end face (4).

7. according to claim 5 or 6 described rolling bearings (9), it is characterized in that described at least one recess (8) is made of one or more grooves around described spin axis (3).

8. according to the described rolling bearing of one of claim 5 to 7 (9), it is characterized in that described at least one recess (8) is covered by the radially extension of described Sealing (13) along described recess (8) fully.

9. according to the described rolling bearing of one of claim 5 to 8 (9), it is characterized in that the axial depth of described recess (8) is between 0.1mm to 0.7mm.

10. according to the described rolling bearing of one of aforementioned claim (9), it is characterized in that, described rolling bearing (9) has second race ring (11), and described Sealing (13) is sealed in the rolling element space between described race ring (1) and described second race ring (11).