KR20170036835A - Seal for rolling bearing - Google Patents

Seal for rolling bearing Download PDF

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Publication number
KR20170036835A
KR20170036835A KR1020150132075A KR20150132075A KR20170036835A KR 20170036835 A KR20170036835 A KR 20170036835A KR 1020150132075 A KR1020150132075 A KR 1020150132075A KR 20150132075 A KR20150132075 A KR 20150132075A KR 20170036835 A KR20170036835 A KR 20170036835A
Authority
KR
South Korea
Prior art keywords
main body
seal
reinforcing member
seal lip
hole
Prior art date
Application number
KR1020150132075A
Other languages
Korean (ko)
Inventor
최재원
차철환
Original Assignee
셰플러코리아(유)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 셰플러코리아(유) filed Critical 셰플러코리아(유)
Priority to KR1020150132075A priority Critical patent/KR20170036835A/en
Publication of KR20170036835A publication Critical patent/KR20170036835A/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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • 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
    • F16C37/00—Cooling of bearings
    • F16C37/007—Cooling of bearings of rolling bearings

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

Abstract

The present invention relates to a seal for a rolling bearing provided in an annular shape, comprising a main body and a reinforcement member. The reinforcement member is made in an annular shape. The main body is formed to cover the reinforcement member, and includes an inserted portion and a seal lip portion. The inserted portion is installed outwardly in a radial direction of the main body. The seal lip portion is installed inwardly in a radial direction of the main body. One or more holes are formed to allow the inserted portion and the seal lip portion to communicate with each other, thus the inner and outer sides of the axial communicating with each other. As such, the present invention aims to provide a seal for the rolling bearing capable of allowing heat generated inside the bearing to be discharged outwards by means of holes allowing the interior and the exterior of the bearing to communicate with each other, while preventing foreign substances from being introduced, e.g. water and dust, from the outside by forming the holes minutely.

Description

Seal for rolling bearing [0002]

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 provided for sealing between an inner ring and an outer ring and which facilitates heat dissipation generated in the bearing.

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 part or all of the reinforcing member 15-1. 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.

The conventional seal 15 for rolling bearings is provided to seal the inside of the bearing so that the heat generated in the inside is not discharged to the outside and the temperature inside the bearing rises and the temperature inside the bearing rises, ) Is degraded.

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

The present invention has been proposed in order to solve the above problems. It is an object of the present invention to finely form a hole to prevent foreign substances such as water and dust from being introduced into the hole, So as to be smoothly discharged to the rolling bearing.

In the seal for rolling bearings of the present invention, the seal for rolling bearings is composed of a main body and a reinforcing member;

The reinforcing member is provided in an annular shape;

The main body is provided to surround the reinforcing member, and has an insertion portion and a seal lip portion; The insertion portion is provided radially outward of the body, and the seal portion is provided radially inward of the body;

Wherein at least one hole is formed between the insertion portion and the seal lip portion so that the inside and outside of the shaft communicate with each other.

In the seal for rolling bearings of the present invention, the seal for rolling bearings is composed of a main body and a reinforcing member;

The reinforcing member is provided in an annular shape;

The main body is provided to surround the reinforcing member, and has an insertion portion and a seal lip portion; The insertion portion is provided radially inward of the body, and the seal portion is provided on the radially outer side of the body;

Wherein at least one hole is formed between the insertion portion and the seal lip portion so that the inside and outside of the shaft communicate with each other.

The main body is provided to surround the axial outer side surface of the reinforcing member, and the hole is formed through the main body.

The main body is provided to surround the axial outer side surface of the reinforcing member, and the hole is formed to penetrate the main body and the reinforcing member at the same time.

The seal for rolling bearings according to the present invention is formed in the bearing between the inserting portion and the seal lip portion to prevent foreign matter such as water and dust from being introduced into the bearing due to convection even though a fine hole communicating the inside and outside of the bearing is formed. The heat inside the bearing is lowered, and as the contact area with the outside increases through the hole, the heat is generated by conduction.

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 of a 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.

4 is a cross-sectional view of a seal for a rolling bearing according to the present invention.

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

The seal 100 for a rolling bearing according to the present invention comprises a main body 110 and a reinforcing member 130.

The reinforcing member 130 is provided in an annular shape. The reinforcing member 130 has a radially outer end portion that extends inwardly in the axial direction. The reinforcing member 130 may have a radially inner end bent and extended inward in the axial direction.

The main body 110 is provided in an annular shape. The main body 110 is provided so as to surround a part or all of the reinforcing member 130. The main body 110 is provided so as to enclose the axial outer side and the bent portion of the reinforcing member 130. The main body 110 includes an insertion portion 111 and a seal lip portion 113. The insertion portion 111 is provided on the radially outer side of the main body 110. The seal lip portion 113 is provided inside the body 110 in the radial direction. The seal lip portion 113 may be branched from the main body 110 and provided in plurality. The insertion portion 111 may be provided radially inward of the main body 110 and the seal lip portion 113 may be provided radially outward of the main body 110.

A hole (117) penetrating in the axial direction is formed between the insertion portion (111) and the seal lip portion (113). A hole 117 is formed in the seal 100 so that the inside and the outside communicate with each other through the hole 117. At least one of the holes 117 is formed. The plurality of holes 117 are formed spaced apart from each other in the circumferential direction and the radial direction. The hole 117 is formed through the main body 110 and the reinforcing member 130 at the same time as the main body 110 and the reinforcing member 130 overlap each other. The hole 117 is simultaneously penetrated through the main body 110 and the reinforcing member 130 so that the reinforcing member 130 is supported even if an external force acts on the seal 100. Therefore, the hole 117 is prevented from being deformed, 100 can be prevented from being clogged by the deformation of the holes 117.

Meanwhile, the hole 117 may be formed in the axial direction at a portion where the main body 110 and the reinforcing member 130 do not overlap. When the hole 117 is formed in the portion where the main body 110 and the reinforcing member 130 do not overlap, the hole is closed when the temperature is low, and the hole is expanded and the heat is released when the temperature is high.

The holes 117 can be formed by machining and laser machining. The diameter of the hole 117 is preferably smaller than 100 mu m. If the diameter of the hole 117 is larger than 100 mu m, foreign matter such as dust or water may be introduced from the outside. The hole 117 may have a rectangular, triangular, elliptical, or rectangular cross-section.

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:
113: seal lip portion 117: hole
130: reinforcing member

Claims (4)

A seal (100) for a rolling bearing, the seal (100) comprising: a main body (110) and a reinforcing member (130);
The reinforcing member 130 is provided in an annular shape;
The main body 110 is provided to surround the reinforcing member 130 and has an insertion portion 111 and a seal lip portion 113; The insertion portion 111 is provided on the radially outer side of the main body 110, the seal lip portion 113 is provided radially inward of the main body 110,
Wherein at least one hole (117) is formed through the insertion part (111) and the seal lip part (113) so that the inner side and the outer side in the axial direction communicate with each other. A seal (100) for a rolling bearing, the seal (100) comprising: a main body (110) and a reinforcing member (130);
The reinforcing member 130 is provided in an annular shape;
The main body 110 is provided to surround the reinforcing member 130 and has an insertion portion 111 and a seal lip portion 113; The insertion portion 111 is provided radially inward of the main body 110, and the seal lip portion 113 is provided on a radially outer side of the main body 110;
Wherein at least one hole (117) is formed through the insertion part (111) and the seal lip part (113) so that the inner side and the outer side in the axial direction communicate with each other. 3. The apparatus according to claim 1 or 2, wherein the main body (110) is provided to surround the axial outer side surface of the reinforcing member (130), and the hole (117) Features Seals for rolling bearings. 3. The apparatus of claim 1 or 2, wherein the main body (110) is provided to surround the axial outer side surface of the reinforcing member (130), and the hole (117) Is formed at the same time.
KR1020150132075A 2015-09-18 2015-09-18 Seal for rolling bearing KR20170036835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150132075A KR20170036835A (en) 2015-09-18 2015-09-18 Seal for rolling bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150132075A KR20170036835A (en) 2015-09-18 2015-09-18 Seal for rolling bearing

Related Child Applications (1)

Application Number Title Priority Date Filing Date
KR1020170069532A Division KR20170067703A (en) 2017-06-05 2017-06-05 Seal for rolling bearing

Publications (1)

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KR20170036835A true KR20170036835A (en) 2017-04-03

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200037016A (en) * 2018-09-28 2020-04-08 셰플러코리아(유) A Rolling Bearing Having Improved Heat Emitting Capability
WO2023097715A1 (en) * 2021-12-03 2023-06-08 进发轴承有限公司 High-heat-dissipation dustproof deep groove ball bearing

Citations (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 (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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200037016A (en) * 2018-09-28 2020-04-08 셰플러코리아(유) A Rolling Bearing Having Improved Heat Emitting Capability
WO2023097715A1 (en) * 2021-12-03 2023-06-08 进发轴承有限公司 High-heat-dissipation dustproof deep groove ball bearing

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