CN204512197U - A kind of bearing sealed ring - Google Patents

Abstract

The utility model relates to a kind of bearing sealed ring, its sealing element framework sectional shape is " ㄣ " font, sealing element framework includes axially extended cylindrical portion, the axial one end of cylindrical portion is provided with the axial inner ends supporting board of ring-type, axial inner ends supporting board extends towards the upset of cylindrical portion internal side diameter, the axial the other end of cylindrical portion is provided with the axial outer end supporting board of ring-type, axial outer end supporting board extends towards the upset of cylindrical portion outside diameter, described grease seal lip is positioned at the corresponding axial inner ends supporting board one end of sealing element framework, corresponding described outer dust-proof lip is positioned at sealing element framework corresponding shaft supporting board one end outward.Compared with prior art, structure is more simple, easy to process for the utility model, and easy for installation and sealing validity can be good.

Description

A bearing sealing ring

technical field

The utility model relates to the technical field of mechanical seals, in particular to a bearing sealing ring.

Background technique

Sealed bearings have the advantages of anti-pollution, dust-proof and simplified host structure, and are easy to install and maintain. They are widely used in various fields such as household appliances, motors, vehicles, metallurgy, engineering machinery, and light industrial machinery. The quality of the sealing performance often determines the service performance and life of the sealed bearing, so the design of the sealing ring becomes the focus of the design of the sealed bearing.

The patent literature with Chinese patent No. 201320248661.7 discloses "Universal joint and its shaft head dustproof seal" (authorized publication number: CN 203297402 U), in which a seal (sealing ring) is disclosed, including a seal The skeleton of the seal and the rubber sealing body covering the inner ring side of the skeleton of the seal. The ring is an integral structure. Both the grease seal ring and the dust-proof ring include a rubber base. The rubber base of the grease seal ring is provided with two sealing lips located on the inner ring and inclined towards the direction of the dust-proof ring. The dust-proof ring The rubber substrate is provided with an outer dust-proof lip far away from the grease sealing ring and an inner dust-proof lip close to the grease sealing ring. The inner dust-proof lip is a triangle, and one side of the triangle overlaps with the rubber base of the dust-proof ring, and the outer dust-proof lip The lip slopes toward the outside of the wiper ring. The seal with the above structure has the following defects:

1. The skeleton of the seal adopts a two-stage stepped shape. Its structure is complex and its processing technology is difficult. At the same time, the shape and structure of the rubber seal attached to the skeleton of the seal are complicated and the processing technology is difficult. The rubber seal assembly of this structure The process is complicated.

2. The inner dust-proof lip adopts a triangular shape, which has poor sealing elasticity and poor sealing effect. Moreover, the poor wear resistance of the sealing lip may easily lead to short sealing life.

Contents of the invention

Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide a bearing sealing ring with simple structure, convenient processing, convenient installation and good sealing performance.

In order to achieve the above purpose, the utility model provides the following technical solutions: a bearing seal ring, including a seal skeleton, and a rubber seal body coated on the inner ring side of the seal skeleton, the rubber seal body includes a rubber matrix, a rubber matrix The inner diameter side is provided with an outer dustproof lip, an inner dustproof lip and at least two grease sealing lips, the outer dustproof lip, the inner dustproof lip and the grease sealing lip are arranged along the axial direction, and the inner dustproof lip The mouth is located between the grease sealing lip and the outer dust-proof lip, and it is characterized in that: the cross-sectional shape of the skeleton of the seal is "ㄣ", the skeleton of the seal includes a cylindrical part extending axially, and the shaft of the cylindrical part is One end is provided with a ring-shaped axially inner end support plate portion, the axially inner end support plate portion is turned and extended toward the inner diameter side of the cylindrical portion, and the other axial end of the cylindrical portion is provided with an annular axially outer end support plate portion , the axially outer end support plate portion turns and extends toward the outer diameter side of the cylindrical portion, the grease sealing lip is located at the end of the seal frame corresponding to the axially inner end support plate portion, and the outer dust-proof lip is located at the seal frame Corresponding to one end of the support plate at the outer end of the axial direction.

By adopting the above technical scheme, the structure of the skeleton of the seal is simple, and only a simple stamping and bending process is required to realize the process. The outer dust-proof lip and the inner dust-proof lip can effectively prevent foreign matter from entering the bearing, and the sealing lip can effectively prevent grease from leaking out from the inside of the bearing, which has the advantage of reliable sealing.

The utility model is further configured as follows: the grease sealing lip is inclined toward one end of the support plate at the outer end of the axial direction, and the outer dust-proof lip is inclined toward the end away from the inner support plate of the axial direction, and the interference of the outer dust-proof lip is end beyond the axially outer end support plate portion.

By adopting the above technical solution, the inclined design of the grease sealing lip has better sealing elasticity and better sealing performance. The inclined design of the outer dust-proof lip and the support plate at the outer end of the axial direction can better contact the seal. The sealing effect is better.

The utility model is further configured as follows: the root of the outer dust-proof lip is located at the junction of the cylindrical portion of the seal skeleton and the axially outer end support plate.

With the above-mentioned structural arrangement, the strength of the dust-proof lip is better, and the reliability of sealing contact with the bearing ring is further improved, and the sealing performance is improved.

The utility model is further configured as follows: the shape of the inner dust-proof lip is elongated, and the inner dust-proof lip is inclined toward an end away from the axial inner end support plate.

With the above structure, the inner dust-proof lip has better elasticity and high wear resistance, and can compensate the contact of the inner dust-proof lip when the contact end of the inner dust-proof lip is worn, so that the sealing performance can be effectively maintained. It has better sealing effect and longer service life.

The utility model is further configured as follows: the rubber matrix extends and covers the axial end surface of the axially outer end support plate part away from the axial inner end support plate part, and the radially outer end surface of the axially outer end support plate part.

With the above structure, the axial end surface of the axially outer end support plate is away from the axial end surface of the axial inner end support plate, and the radially outer end surface of the axially outer end support plate is generally exposed, which can make the seal skeleton have the ability to resist the outside world. Corrosion ability, longer service life.

Below in conjunction with accompanying drawing, the utility model is further described.

Description of drawings

Fig. 1 is the schematic diagram of the use state of the bearing sealing ring of the specific embodiment of the utility model;

Fig. 2 is a structural schematic diagram of a bearing sealing ring of a specific embodiment of the present invention.

Detailed ways

Referring to accompanying drawings 1 and 2, a bearing seal ring disclosed by the utility model includes a seal frame 1, and a rubber seal body 2 coated on the inner ring side of the seal frame 1; the rubber seal body 2 includes rubber Base body 21, the inner diameter side of rubber base body 21 is provided with outer dust-proof lip 22, inner dust-proof lip 23 and at least two grease sealing lips 24, 25, outer dust-proof lip 22, inner dust-proof lip 23 and grease The sealing lips 24 , 25 are arranged along the axial direction, and the inner dustproof lip 23 is located between the grease sealing lip 24 and the outer dustproof lip 22 . The cross-sectional shape of the seal frame 1 is "ㄣ" shape, the seal frame 1 includes an axially extending cylindrical portion 11, and one axial end of the cylindrical portion 11 is provided with a ring-shaped axial inner end support plate portion 12 , the axially inner end support plate portion 12 turns over and extends toward the inner diameter side of the cylindrical portion 11, and the other axial end of the cylindrical portion 11 is provided with an annular axially outer end support plate portion 13, and the axially outer end support plate 13 faces The outer diameter side of the cylindrical part 11 is reversed and extended. The grease sealing lips 24 and 25 are located at the end of the support plate 12 at the axial inner end of the seal frame 1, and the outer dust-proof lip 22 is located at the corresponding end of the seal frame 1. The axial outer end supports one end of the plate portion 13 . Wherein, the outer diameter end surface of the cylindrical part 11 forms a radial support surface, and the axial outer end support plate portion 13 faces the axial inner end support plate portion 12. An axial end surface forms an axial support end surface for sealing ring installation. The inner end support plate part 12 faces away from the axial end face of the inner end support plate part 13 to form the other axial support end face where the sealing ring is installed. and the skeleton of the sealing element has a simple structure, and only needs a simple punching and bending process to realize, the process is simple and easy, and at the same time, it is convenient for the rubber sealing body to be formed on the sealing element skeleton.

In this specific embodiment, the grease sealing lips 24, 25 are inclined towards the end of the support plate 13 at the axial outer end, and the outer dust-proof lip 22 is inclined towards the end away from the support plate 12 at the inner end of the axial direction. The conflicting end of the dust lip 22 passes over the supporting plate portion 13 at the axially outer end. The inclined design of the grease sealing lip has better sealing elasticity and better sealing performance; the inclined design of the outer dust-proof lip and the support plate at the outer end of the axial direction (as shown in Figure 1) can better contact the seal , the sealing effect is better. Wherein, the root of the outer dust-proof lip 22 is located at the joint between the cylindrical portion 11 of the seal skeleton 1 and the axially outer end support plate portion 13; the outer dust-proof lip has better strength and further improves the bearing The sealing contact reliability of the ferrule improves the sealing performance.

In order to improve the sealing performance of the inner dust-proof lip, the shape of the inner dust-proof lip 23 is elongated, and the inner dust-proof lip 23 is inclined toward the end away from the axial inner support plate portion 12 . Compared with the traditional triangular shape, the inner dust-proof lip has better resilience and high wear resistance, and can compensate the contact of the inner dust-proof lip when the contact end of the inner dust-proof lip is worn, so that the sealing performance is improved. It is effectively maintained, has a better sealing effect and a longer service life.

The axial end surface of the axial outer support plate 13 away from the axial inner end support plate 12, and the radial outer end surface of the axial outer end support plate 13 are generally exposed. In order to ensure the anti-corrosion performance of the seal skeleton, the The rubber matrix 21 extends and covers the axial end surface of the axially outer end support plate portion 13 away from the axially inner end support plate portion 12, and the radially outer end surface of the axially outer end support plate portion 13, that is, in the axial direction An edge covering rubber body 211 is formed on the outer end support plate portion 13 .

Claims (5)

1. a bearing sealed ring, include sealing element framework, and be coated on the rubbery sealed body of sealing element framework inner ring side, rubbery sealed body comprises rubber matrix, rubber matrix internal side diameter is provided with outer dust-proof lip, interior dust-proof lip and at least two grease seal lips, outer dust-proof lip, interior dust-proof lip and grease seal lip are axially arranged, interior dust-proof lip is between grease seal lip and outer dust-proof lip, it is characterized in that: described sealing element framework sectional shape is " ㄣ " font, sealing element framework includes axially extended cylindrical portion, the axial one end of cylindrical portion is provided with the axial inner ends supporting board of ring-type, axial inner ends supporting board extends towards the upset of cylindrical portion internal side diameter, the axial the other end of cylindrical portion is provided with the axial outer end supporting board of ring-type, axial outer end supporting board extends towards the upset of cylindrical portion outside diameter, described grease seal lip is positioned at the corresponding axial inner ends supporting board one end of sealing element framework, corresponding described outer dust-proof lip is positioned at sealing element framework corresponding shaft supporting board one end outward.

2. bearing sealed ring according to claim 1, it is characterized in that: described grease seal lip is in tilting towards axial outer end supporting board one end, outer dust-proof lip tilts in towards away from axial inner ends supporting board one end, and the conflict end of outer dust-proof lip crosses described axial outer end supporting board.

3. bearing sealed ring according to claim 2, is characterized in that: the root of described outer dust-proof lip is positioned at cylindrical portion and the axial outer end supporting board joint of described sealing element framework.

4. bearing sealed ring according to claim 1 or 2 or 3, is characterized in that: the shape of described interior dust-proof lip is long strip, and interior dust-proof lip is in tilting towards away from axial inner ends supporting board one end.

5. bearing sealed ring according to claim 1 or 2 or 3, is characterized in that: described rubber matrix extends and covers the axial end of described axial outer end supporting board away from axial inner ends supporting board, and the radial outer end face of axial outer end supporting board.