CN219492856U - Strong sealing bearing piece - Google Patents
Strong sealing bearing piece Download PDFInfo
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- CN219492856U CN219492856U CN202320284411.2U CN202320284411U CN219492856U CN 219492856 U CN219492856 U CN 219492856U CN 202320284411 U CN202320284411 U CN 202320284411U CN 219492856 U CN219492856 U CN 219492856U
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- bearing
- ring
- sealing
- peripheral wall
- clamping groove
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Sealing Of Bearings (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The utility model discloses a strong sealing bearing piece, which comprises a bearing outer ring, a bearing inner ring and a plurality of bearing balls, wherein grooves are formed in the inner peripheral wall of the bearing outer ring and the outer peripheral wall of the bearing inner ring, the bearing balls are arranged between the two grooves through a bearing retainer, the strong sealing bearing piece further comprises a sealing ring, the upper end of the sealing ring is inwards bent to form an upper clamping part, the lower end of the sealing ring is inwards bent to form a lower sealing lip, the upper clamping part of the sealing ring is in clamping abutting joint with the inner wall of the bearing outer ring, and the lower sealing lip of the sealing ring is used for extruding and sealing with the outer wall of the bearing inner ring. According to the strong sealing bearing provided by the utility model, the sealing ring is arranged between the bearing outer ring and the bearing inner ring, one part of the sealing ring is clamped on the inner wall of the bearing outer ring, and the other part of the sealing ring is tightly contacted with the outer wall of the bearing inner ring, so that the sealing performance of the skeleton oil seal is achieved, the leakage of oil bodies in certain products such as a reduction gearbox can be effectively prevented, the strong sealing bearing is compact in structure, and the sealing structure is firmer.
Description
Technical Field
The utility model relates to the technical field of bearings, in particular to a strong sealing bearing piece.
Background
The bearing widely used at present is generally composed of an outer ring, an inner ring, steel balls and a retainer, specifically, the steel balls are arranged in the retainer, the retainer is arranged between the inner ring and the outer ring, and the upper end face and the lower end face of the steel balls are respectively positioned in raceways of the outer ring and the inner ring.
In the design of the reduction gearbox product, a technician usually adopts a bearing to support a transmission component therein, and cooperates with a framework oil seal on the outer side of the bearing to prevent lubricating oil in the reduction gearbox from leaking outwards, and although the application of the framework oil seal to the reduction gearbox can improve the sealing performance of the reduction gearbox, the framework oil seal also has certain requirements on the installation space in the reduction gearbox, and the structure requires that the box body part of the reduction gearbox has enough space to install the framework oil seal.
For an electric drive assembly with higher integration level, due to the limitation of the structure and the size of the product, an RS type bearing is generally used for sealing two sides of a reduction gearbox. However, certain problems occur in practical application: because the driving assembly directly runs on the ground, when the running ground is in hollow fluctuation, the reduction gearbox in the driving assembly can be subjected to larger impact and vibration, and in the situation, a certain gap can appear between the framework oil seal and the bearing, so that the oil body in the reduction gearbox leaks outwards from the gap, and therefore, the sealing combination of the bearing and the framework oil seal is not suitable for being applied to high-integration products.
Disclosure of Invention
In view of the above, the present utility model aims to provide a strong sealing bearing member, which has a compact structure and can realize a sealing function without matching a framework oil seal.
To achieve the above object, the present utility model adopts the following:
the utility model provides a strong sealing bearing piece, which comprises a bearing outer ring, a bearing inner ring and a plurality of bearing balls, wherein grooves are formed in the inner peripheral wall of the bearing outer ring and the outer peripheral wall of the bearing inner ring, the bearing balls are arranged between the two grooves through a bearing retainer, the strong sealing bearing piece also comprises a sealing ring arranged between the bearing outer ring and the bearing inner ring, the upper end of the sealing ring is inwards bent to form an upper clamping part, the lower end of the sealing ring is inwards bent to form a lower sealing lip, the upper clamping part of the sealing ring is tightly clamped and abutted with the inner wall of the bearing outer ring, and the lower sealing lip of the sealing ring is used for extruding and sealing with the outer wall of the bearing inner ring.
According to the strong sealing bearing piece provided by the utility model, one side of the inner peripheral wall of the bearing outer ring is inwards recessed to form the first clamping groove, one side of the outer peripheral wall of the bearing inner ring is inwards recessed to form the second clamping groove, the upper clamping part of the sealing ring is clamped and abutted with the first clamping groove, and the lower sealing lip of the sealing ring is in extrusion sealing with the second clamping groove.
According to the strong sealing bearing piece provided by the utility model, the two sides of the inner peripheral wall of the bearing outer ring are respectively inwards recessed to form the first clamping groove, the two sides of the outer peripheral wall of the bearing inner ring are respectively inwards recessed to form the second clamping groove, the two sides between the bearing outer ring and the bearing inner ring are respectively provided with the sealing rings, the upper clamping parts of the sealing rings are clamped and abutted with the first clamping grooves, and the lower sealing lips of the sealing rings are in extrusion sealing with the second clamping grooves.
According to the strong sealing bearing piece provided by the utility model, the periphery of the upper clamping part of the sealing ring presents a smooth contact surface.
According to the strong sealing bearing piece provided by the utility model, the lower sealing lip of the sealing ring is provided with a convex transitional middle section and a lip end front part in a wedge shape.
According to the strong sealing bearing piece provided by the utility model, the groove is arranged at the middle partial side of the inner peripheral wall of the bearing outer ring, the groove is arranged at the middle partial side of the outer peripheral wall of the bearing inner ring, and the inner groove and the outer groove correspond to each other.
According to the strong sealing bearing piece provided by the utility model, grooves are respectively arranged in the middle position of the inner peripheral wall of the outer ring of the bearing and the middle position of the outer peripheral wall of the inner ring of the bearing, and the inner groove and the outer groove correspond to each other.
Compared with the background art, the strong sealing bearing provided by the utility model has the advantages that the sealing ring is arranged between the bearing outer ring and the bearing inner ring, one part of the sealing ring is clamped on the inner wall of the bearing outer ring, the other part of the sealing ring is tightly contacted with the outer wall of the bearing inner ring, the sealing performance of the skeleton oil seal is achieved, the leakage of an oil body in certain products such as a reduction gearbox can be effectively prevented, the structure of the strong sealing bearing is compact, and the sealing structure is firmer.
Drawings
The following describes the embodiments of the present utility model in further detail with reference to the drawings.
FIG. 1 is a schematic view of the overall structure of a strong seal bearing member according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of one design form of a strong seal bearing member according to an embodiment of the present utility model;
FIG. 3 is an enlarged partial cross-sectional view of one design form of a strong seal bearing member according to an embodiment of the present utility model;
FIG. 4 is a cross-sectional view of a seal ring according to an embodiment of the present utility model;
FIG. 5 is a cross-sectional view of another design form of a strong seal bearing member according to an embodiment of the present utility model;
10-bearing outer ring, 20-bearing inner ring, 30-bearing ball, 40-bearing retainer, 50-sealing ring, 110 (210) -groove, 120-first clamping groove, 220-second clamping groove, 510-upper clamping part, 520-lower sealing lip, 521-transition middle section, 522-lip front part.
Detailed Description
In order to more clearly illustrate the present utility model, the present utility model will be further described with reference to preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this utility model is not limited to the details given herein.
Example 1
The structure of the strong seal bearing is basically similar to that of a general bearing, referring to fig. 1, 2 and 3, the basic components of the strong seal bearing include a bearing outer ring 10, a bearing inner ring 20, a plurality of bearing balls 30 and a bearing retainer 40, the bearing inner ring 20 is positioned in the bearing outer ring 10, the bearing inner ring 20 and the bearing outer ring are in consistent thickness and are arranged in concentric circles, grooves 110 (210) corresponding to each other inside and outside are respectively arranged on the inner peripheral wall of the bearing outer ring 10 and the outer peripheral wall of the bearing inner ring 20, so as to form an annular track for the bearing balls 30 to freely roll, and the plurality of bearing balls 30 are arranged between the two grooves 110 (210) through the bearing retainer 40, wherein the specific structure of the bearing retainer and the specific installation form of the bearing balls and the bearing retainer are not excessively described in the specification of the application, and belong to conventional technical means for the general technology in the field.
The strong sealing bearing member provided in this embodiment is provided with a reinforced sealing ring between a bearing outer ring and a bearing inner ring, and for a bearing member with a narrower width, that is, under the condition that the thickness (height) of the bearing member is designed smaller, only the sealing ring needs to be installed on one side of the bearing member, and the bearing member with a narrower width is suitable for application in a low bearing environment.
Referring to fig. 4, the reinforced seal ring 50 has an overall annular structure, and is made of rubber, and has a flat outer surface, an upper clamping portion 510 formed by bending the upper end of the inner surface inward, and a lower sealing lip 520 formed by bending the lower end of the inner surface inward, that is, an annular lower groove is formed between the upper clamping portion and the lower sealing lip.
In detail, the outer peripheral surface of the upper clamping portion 510 of the sealing ring 50 presents a smooth contact surface, the lower sealing lip 520 of the sealing ring 50 has a continuous two-section structure, which is a convex transition middle section 521 and a lip end front portion 522 in a wedge shape, the middle position of the bottom of the transition middle section is provided with a protruding contact position, the lip end front portion is arranged downward inclined towards one side, and an arc-shaped concave section is arranged between the transition middle section and the lip end front portion.
In order to ensure that the seal ring 50 can be smoothly installed between the bearing outer ring 10 and the bearing inner ring 20, the positions of the grooves on the bearing outer ring 10 and the bearing inner ring 20 need to be adjusted as necessary, the groove 110 on the bearing outer ring 10 is arranged at the middle side position of the inner peripheral wall of the bearing outer ring, the groove 210 on the bearing inner ring 20 is also arranged at the middle side position of the outer peripheral wall of the bearing inner ring, and it is worth noting that the inner groove and the outer groove need to be correspondingly arranged in the processing process, so that the normal rolling of the bearing balls cannot be influenced.
In order to firmly mount the seal ring 50 between the bearing outer ring 10 and the bearing inner ring 20, a first clamping groove 120 is provided on the inner peripheral wall side (the side far from the upper groove) of the bearing outer ring 10, a second clamping groove 220 is provided on the outer peripheral wall side (the side far from the upper groove) of the bearing inner ring 20, the first clamping groove and the second clamping groove are designed as smooth contact surfaces, the left-right width of the first clamping groove and the second clamping groove is not lower than the left-right thickness of the seal ring, and the distance between the first clamping groove and the second clamping groove is slightly smaller than the front-back thickness (the maximum height between the upper clamping part and the lower sealing lip) of the seal ring.
And (3) installing a sealing ring: the sealing ring is clamped between the bearing outer ring and the bearing inner ring, the upper clamping part of the sealing ring is clamped and abutted with the first clamping groove, the lower sealing lip of the sealing ring is pressed and sealed with the second clamping groove, in detail, the protruding bottom of the upper transition middle section of the lower sealing lip is abutted with the second clamping groove, the front part of the upper lip end of the lower sealing lip is abutted with the second clamping groove, and the part between the lowest part of the upper transition middle section and the lowest part of the front part of the lip end is not in contact with the second clamping groove.
The front part of the lip end of the lower sealing lip is in a wedge shape, and is matched and installed with a second clamping groove on the bearing inner ring in an extrusion sealing mode, so that the sealing fluid can be sealed, and the stable contact state with the surface of the second clamping groove can be kept; the transitional middle section of the lower sealing lip has the function of preventing external dust from entering, and assists the front part of the lip end to play a role of sealing fluid.
The upper clamping part of the sealing ring is tightly contacted with the first clamping groove, the pressing force between the sealing ring and the bearing outer ring is improved, the effect of keeping the stable contact state between the upper clamping part and the surface of the first clamping groove is achieved, when the strong sealing bearing piece is impacted or vibrated, the phenomenon that the sealing ring is separated from the bearing outer ring and the bearing inner ring is avoided, and the sealing structure is firm.
Example 2
Referring to fig. 5, a cross-sectional view of another design of a strong seal bearing according to an embodiment of the present utility model is shown.
The solution provided in example 1 is for a narrower width bearing member, in general, the wider the width, the stronger the bearing member's load carrying capacity (with a certain limit value), both being proportional.
Certain application scenes have higher requirements on the bearing capacity of the bearing piece, so the required bearing piece has wider width, and for the bearing piece with wider width, a reinforced sealing ring is required to be arranged at two sides between the bearing outer ring and the bearing inner ring in the design and processing process.
The structure of the strong seal bearing is similar to that of the general bearing in embodiment 1, the basic components of the strong seal bearing comprise a bearing outer ring 10, a bearing inner ring 20, a plurality of bearing balls 30 and a bearing retainer 40, the bearing inner ring 20 is positioned in the bearing outer ring 10, the bearing inner ring 20 and the bearing outer ring 10 are in consistent thickness and are arranged in concentric circles, grooves 110 (210) corresponding to each other inside and outside are respectively arranged on the inner peripheral wall of the bearing outer ring 10 and the outer peripheral wall of the bearing inner ring 20, so as to form an annular track for the bearing balls 30 to freely roll, the plurality of bearing balls 30 are arranged between the two grooves 110 (210) through the bearing retainer 40, and the specific structure of the bearing retainer and the specific installation form of the bearing balls and the bearing retainer are not excessively described in the specification of the application, so that the strong seal bearing belongs to the conventional technical means for the general technology in the field.
The strong sealing bearing member provided in this embodiment is that a reinforced sealing ring is disposed on two sides of the bearing member, and the structural characteristics of the sealing ring are completely identical to those of the sealing ring in embodiment 1, and the sealing ring also has an upper clamping portion and a lower sealing lip.
In order to ensure that the seal ring 50 can be smoothly mounted between the bearing outer race 10 and the bearing inner race 20, the positions of the grooves on the bearing outer race and the bearing inner race are adjusted as follows: the groove 110 on the outer ring 10 is disposed at the middle position of the inner peripheral wall, and the groove 210 on the inner ring 20 is also disposed at the middle position of the outer peripheral wall, and it should be noted that the inner and outer grooves can be corresponding during the processing process, so that the normal rolling of the bearing balls cannot be affected.
In order to firmly install the seal ring 50 between the bearing outer ring 10 and the bearing inner ring 20, first clamping grooves 120 (two first clamping grooves are centered and symmetrical about a groove) which are concave inwards are respectively arranged at two sides of the inner peripheral wall of the bearing outer ring 10, second clamping grooves (220 two second clamping grooves are centered and symmetrical about a groove) which are concave inwards are respectively arranged at two sides of the outer peripheral wall of the bearing inner ring 20, the first clamping grooves and the second clamping grooves are designed to be smooth contact surfaces, the left-right width of the first clamping grooves and the second clamping grooves is not lower than the left-right thickness of the seal ring, and the distance between the first clamping grooves and the second clamping grooves is slightly smaller than the front-back thickness of the seal ring (refer to the maximum height between the upper clamping part and the lower seal lip).
The seal ring in this embodiment is also mounted in the same manner as in embodiment 1.
It should be understood that the foregoing examples of the present utility model are provided merely for clearly illustrating the present utility model and are not intended to limit the embodiments of the present utility model, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present utility model as defined by the appended claims.
Claims (7)
1. The utility model provides a strong seal bearing spare, includes bearing outer lane, bearing inner race and a plurality of bearing ball, all be equipped with the slot on the inner peripheral wall of bearing outer lane and the outer peripheral wall of bearing inner race, a plurality of bearing balls pass through a bearing retainer and install between two slots, its characterized in that: the sealing ring is arranged between the bearing outer ring and the bearing inner ring, the upper end of the sealing ring is inwards bent to form an upper clamping part, the lower end of the sealing ring is inwards bent to form a lower sealing lip, the upper clamping part of the sealing ring is in clamping and abutting connection with the inner wall of the bearing outer ring, and the lower sealing lip of the sealing ring is used for extruding and sealing with the outer wall of the bearing inner ring.
2. The strong seal bearing member according to claim 1, wherein a first clamping groove is formed by inward recessing of one side of the inner peripheral wall of the bearing outer ring, a second clamping groove is formed by inward recessing of one side of the outer peripheral wall of the bearing inner ring, an upper clamping part of the seal ring is clamped and abutted with the first clamping groove, and a lower sealing lip of the seal ring is pressed and sealed with the second clamping groove.
3. The strong sealing bearing part according to claim 1, wherein two sides of the inner peripheral wall of the bearing outer ring are respectively recessed inwards to form a first clamping groove, two sides of the outer peripheral wall of the bearing inner ring are respectively recessed inwards to form a second clamping groove, sealing rings are arranged on two sides between the bearing outer ring and the bearing inner ring, an upper clamping part of each sealing ring is clamped and abutted with the corresponding first clamping groove, and a lower sealing lip of each sealing ring is in extrusion sealing with the corresponding second clamping groove.
4. A strongly sealed bearing according to claim 2 or 3, wherein the outer periphery of the upper clamping part of the sealing ring presents a smooth contact surface.
5. A strongly sealed bearing as claimed in claim 4, wherein the lower sealing lip of the sealing ring has a convex transition middle section and a lip end front section in the shape of a wedge.
6. A strong seal bearing according to claim 2, wherein a groove is provided in the inner peripheral wall of the bearing outer race at a position midway between the grooves, and a groove is provided in the outer peripheral wall of the bearing inner race at a position midway between the grooves, the inner and outer grooves corresponding to each other.
7. A strong seal bearing according to claim 3, wherein grooves are provided in the middle of the inner peripheral wall of the outer race and the middle of the outer peripheral wall of the inner race, respectively, and the inner and outer grooves correspond to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320284411.2U CN219492856U (en) | 2023-02-22 | 2023-02-22 | Strong sealing bearing piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320284411.2U CN219492856U (en) | 2023-02-22 | 2023-02-22 | Strong sealing bearing piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219492856U true CN219492856U (en) | 2023-08-08 |
Family
ID=87482664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320284411.2U Active CN219492856U (en) | 2023-02-22 | 2023-02-22 | Strong sealing bearing piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219492856U (en) |
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2023
- 2023-02-22 CN CN202320284411.2U patent/CN219492856U/en active Active
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| GR01 | Patent grant |