KR101725660B1 - A Seal for Rolling Bearing - Google Patents

A Seal for Rolling Bearing Download PDF

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Publication number
KR101725660B1
KR101725660B1 KR1020150132681A KR20150132681A KR101725660B1 KR 101725660 B1 KR101725660 B1 KR 101725660B1 KR 1020150132681 A KR1020150132681 A KR 1020150132681A KR 20150132681 A KR20150132681 A KR 20150132681A KR 101725660 B1 KR101725660 B1 KR 101725660B1
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KR
South Korea
Prior art keywords
seal
main body
groove
reinforcing member
insertion portion
Prior art date
Application number
KR1020150132681A
Other languages
Korean (ko)
Other versions
KR20170036889A (en
Inventor
이경구
추동균
안희훈
Original Assignee
셰플러코리아(유)
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Application filed by 셰플러코리아(유) filed Critical 셰플러코리아(유)
Priority to KR1020150132681A priority Critical patent/KR101725660B1/en
Publication of KR20170036889A publication Critical patent/KR20170036889A/en
Application granted granted Critical
Publication of KR101725660B1 publication Critical patent/KR101725660B1/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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7806—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for spherical roller 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
    • F16C33/7853—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

According to the present invention, there is provided a seal for a rolling bearing having an annular shape,
Wherein the seal for rolling bearings comprises a main body and a reinforcing member; Wherein the reinforcing member is provided in an annular shape; Wherein the main body is annular and is provided to surround a part or all of the reinforcing member, the main body being composed of an insertion portion and a seal lip; The seal lip being provided radially inward of the body; Wherein the insertion portion is provided on a radially outer side of the main body, and the suction groove is formed concavely in a joint surface contacting the seal groove.

Description

A Seal for Rolling Bearing}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seal for a rolling bearing, and more particularly, to a seal for a rolling bearing which is easy to assemble into a bearing and has improved fixability.

A typical bearing is a mechanical element provided between the shaft and the housing and rotatably supporting a load acting on the shaft or the housing.

1 and 2, the ball bearing 10 includes an outer ring 12 inserted into the housing, an inner ring 11 into which the shaft is inserted, A plurality of rolling elements 13 for rotatably supporting the inner ring 11 and the inner ring 11 and a retainer 14 for maintaining a constant distance between the rolling elements 13, And a seal 15 installed between the inner ring 11 and the outer ring 12 to prevent foreign matter from entering between the inner ring 11 and the outer ring 12 and to prevent the lubricant filling the inside from flowing out to the outside.

A seal groove 12-1 is formed in the outer ring 12 so as to be concave toward a radial direction (longitudinal direction in FIG. 2). The inner ring (11) is formed with a sealing surface (11-1) on both sides of the axial rolling member (13) in contact with radially inward side of the seal (15).

The seal 15 is provided on both sides of the rolling member 13 between the inner ring 11 and the outer ring 12. As shown in Fig. 3, the conventional rolling bearing seal 15 is composed of a main body 15-5 and a reinforcing member 15-1.

The reinforcing member (15-1) is annular and extends radially outwardly inwardly in the axial direction. The body 15-5 is formed in an annular shape, and includes an insertion portion 15-2 and a seal lip portion 15-3. The main body 15-5 is provided so as to surround a part of the axial inner side surface of the reinforcing member 15-1 and the axial outer side surface. The insertion portion 15-2 is provided on the radially outer side of the body 15-5 and the seal lip 15-3 is provided on the radially inner side of the body 15-5.

The insertion portion 15-2 of the seal 15 is inserted into the seal groove 12-1 of the outer ring 12 and is provided. The seal lip portion 15-3 of the seal 15 is provided in contact with the sealing surface 11-1 of the inner ring 11.

However, conventional rolling bearing seals are not easy to assemble due to thermal deformation of the seal grooves generated during the heat treatment process of the bearings, or slip occurs between the insert portions of the seal and the seal grooves during operation of the bearings even after assembly, There is a problem that the insertion portion is detached from the seal groove due to weak fixity.

Korean Registered Patent No. 10-1059273 (Aug. 18, 2011)

In order to solve the above problems, according to the present invention, a suction groove is formed on a joint surface of a seal, so that when a seal is provided on a bearing, the suction groove is sucked into the seal groove to improve the fixability of the seal, A seal for a rolling bearing is provided which is prevented from being released and leakage of a lubricant is prevented.

The present invention provides a seal for a rolling bearing having an annular shape,

Wherein the seal for rolling bearings comprises a main body and a reinforcing member; Wherein the reinforcing member is provided in an annular shape; Wherein the main body is annular and is provided to surround a part or all of the reinforcing member, the main body being composed of an insertion portion and a seal lip; The seal lip being provided radially inward of the body; Wherein the inserting portion is provided on a radially outer side of the main body, and the suction groove is formed concavely in a joint surface contacting the seal groove.

According to the present invention, there is provided a seal for a rolling bearing having an annular shape,

Wherein the seal for rolling bearings comprises a main body and a reinforcing member; Wherein the reinforcing member is provided in an annular shape; Wherein the main body is annular and is provided to surround a part or all of the reinforcing member, the main body being composed of an insertion portion and a seal lip; The seal lip is provided radially outward of the body; Wherein the inserting portion is provided radially inward of the main body, and the suction groove is formed concavely on the abutting surface contacting the seal groove.

In the above, the adsorption protrusion is protruded from the edge of the suction groove.

In this case, the adsorption grooves are formed in an elliptic shape.

In this case, the adsorption grooves are formed to extend in the circumferential direction.

In the above, the adsorption grooves are spaced apart in the circumferential direction to form a plurality of adsorption grooves.

When the seal is formed on the bearing surface of the rolling bearing seal according to the present invention, when the seal is installed on the bearing, the suction groove is sucked into the seal groove to improve the fixability of the seal, There is an effect that leakage is prevented.

1 is an exploded perspective view illustrating a structure of a bearing,
Fig. 2 is a sectional view showing a part of the bearing,
3 is a cross-sectional view showing a cross section of a conventional rolling bearing seal,
4 is a cross-sectional view showing a seal for a rolling bearing according to the present invention,
5 is a cross-sectional view showing a modified example of an adsorption groove formed in a seal for rolling bearings according to the present invention,
6 is a cross-sectional view showing another modification of the suction groove formed in the seal for a rolling bearing according to the present invention.

Hereinafter, a seal for a rolling bearing according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 4 is a cross-sectional view showing a seal for a rolling bearing according to the present invention, FIG. 5 is a sectional view showing a modified example of a suction groove formed in a seal for a rolling bearing according to the present invention, Sectional view showing still another modification of the suction groove formed in the seal for use.

Hereinafter, in Fig. 4, the horizontal direction is referred to as " radial direction " and the " vertical direction "

4, the seal 100 for a rolling bearing according to the present invention includes a main body 110 and a reinforcing member 130. As shown in FIG.

The reinforcing member 130 is provided in an annular shape. The radially outer end of the reinforcing member 130 is axially bent. The reinforcement member 130 may be provided with a radially inner end bent in the axial direction according to the position of the seal groove 12-1 of the bearing on which the seal is installed.

The main body 110 is provided in an annular shape. The main body 110 is provided to surround the reinforcing member 130. The main body 110 includes an insertion portion 111 and a seal lip 113.

The seal lip 113 is provided radially inward of the main body 110. The seal lip 113 may be branched from the main body 110 and may be provided in plurality.

The insertion portion 111 is provided radially outward of the main body 110. The insertion portion 111 may be provided radially inward of the main body 110 depending on the position of the seal groove 12-1 of the bearing and the seal lip 113 may be provided radially outward of the main body 110 .

When the insertion portion 111 is inserted into the seal groove 12-1, the insertion portion 111 is brought into contact with the seal groove 12-1 to form a contact surface 1111. [

In general, the seal groove 12-1 is formed with a wide outwardly facing surface, so that the joint surface 1111 is preferably formed on the surface of the insertion portion 111 facing in the axial direction.

The adsorption grooves 120 are concave on the joining surface 1111.

The adsorption grooves 120 are formed in a spherical shape. The plurality of adsorption grooves 120 are spaced circumferentially.

Therefore, when the insertion portion 111 of the roller bearing seal is inserted into the seal groove 12-1, the contact surface 1111 is in close contact with the seal groove 12-1, (1111) is sucked into the seal groove (12-1).

As described above, the fixation property of the seal is improved by the suction groove 120 adsorbed to the seal groove 12-1 to prevent slippage between the seal groove 12-1 and the seal, and to prevent the seal from separating from the bearing do. In addition, the sealing force of the seal is improved to prevent leakage of the bearing lubricant.

As shown in FIG. 5, a suction protrusion 123 may protrude from the edge of the suction groove 120. The suction protrusion 123 protrudes axially from the edge of the suction groove 120.

As described above, since the suction protrusion 123 is provided at the edge of the suction groove 120, the sealing property and the suction force of the suction groove 120 are increased, and the fixing property is further improved.

As shown in FIG. 6, the adsorption grooves 120 may extend in the circumferential direction. The adsorption grooves 120 may be formed in the shape of an ellipse. The elliptical adsorption grooves 120 may be spaced circumferentially and provided in a plurality of elliptical shapes.

The suction grooves 120 may be formed in various shapes that can be adsorbed to the seal grooves 12-1 in addition to the shapes described above.

Although the seal for a rolling bearing according to the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the present invention is merely illustrative and that various modifications and equivalent other embodiments are possible for those skilled in the art. Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

100: Seals for rolling bearings
110: main body 111:
1111: joint surface 113: seal lip
120: suction groove 130: reinforcing member

Claims (6)

A seal for a rolling bearing, the seal being inserted into a seal groove formed in a ring shape and having a wide outwardly facing surface in the axial direction,
The roller bearing seal comprises a main body 110 and a reinforcing member 130; The reinforcing member 130 is provided in an annular shape; The main body 110 has an annular shape and is configured to surround part or all of the reinforcing member 130 and includes an insertion portion 111 and a seal lip 113;
The seal lip 113 is provided radially inward of the main body 110; The insertion portion 111 is provided at a radially outer side of the main body 110 and has a joint surface 1111 inserted into the seal groove to closely contact the axially outward surface of the seal groove, A plurality of spherical adsorption grooves 120 are formed circumferentially spaced apart from each other; When the insertion portion 111 is inserted into the seal groove, the contact surface 1111 is brought into close contact with the axially outward surface of the seal groove and is attracted to the axially outward surface of the seal groove due to the suction groove 120. [ Seal. delete delete The seal for rolling bearings according to claim 1, wherein the suction grooves (120) are formed in an elliptical shape. The seal for rolling bearings according to claim 1, wherein the suction groove (120) is formed in a circumferentially extending shape. delete
KR1020150132681A 2015-09-18 2015-09-18 A Seal for Rolling Bearing KR101725660B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150132681A KR101725660B1 (en) 2015-09-18 2015-09-18 A Seal for Rolling Bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150132681A KR101725660B1 (en) 2015-09-18 2015-09-18 A Seal for Rolling Bearing

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Publication Number Publication Date
KR20170036889A KR20170036889A (en) 2017-04-03
KR101725660B1 true KR101725660B1 (en) 2017-04-11

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KR1020150132681A KR101725660B1 (en) 2015-09-18 2015-09-18 A Seal for Rolling Bearing

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009079610A (en) * 2007-09-25 2009-04-16 Jtekt Corp Sealing device for rolling bearing
JP2014134252A (en) * 2013-01-10 2014-07-24 Ntn Corp Bearing seal and rolling bearing with seal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101059273B1 (en) 2009-01-09 2011-08-24 셰플러코리아(유) Seal for high heat generating environment and bearing with seal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009079610A (en) * 2007-09-25 2009-04-16 Jtekt Corp Sealing device for rolling bearing
JP2014134252A (en) * 2013-01-10 2014-07-24 Ntn Corp Bearing seal and rolling bearing with seal

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