Ball bearing assembly for turbocharger
By incorporating graphite slip rings and spring structures in the ball bearing assembly for turbochargers, the gap between the outer and inner rings is sealed, solving the problem of bearing damage caused by dust and sand particles entering, and achieving long-term sealing and wear resistance of the ball bearings.
Patent Information
- Application Number
- CN202520399918.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Existing ball bearing assemblies for turbochargers are prone to damage from dust and sand, leading to system failure, and current technologies are insufficient to effectively protect against this.
The design incorporates a first and a second slip ring made of graphite. By sealing the gap between the outer and inner rings, the self-lubricating and high-temperature resistant properties of graphite are utilized, along with a spring to push the slip ring tightly against the groove, thereby extending the sealing life.
It effectively prevents dust and sand from entering the ball bearings, reduces wear, extends the service life of the seals, and ensures the normal operation of the turbocharger.
Smart Images
Figure CN223689785U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of ball bearing, more specifically, it relates to a ball bearing assembly for turbocharger. BACKGROUND
[0002] The common problems of turbocharger ball bearing mainly include wear, damage and poor lubrication, the ball bearing plays a key role in the turbocharger, and the precision requirement is extremely high, and any slight wear can cause the failure of the whole system, the existing ball bearing assembly for turbocharger, if the air cleaner filter element is not replaced or damaged for a long time, dust and sand can enter the turbocharger and damage the bearing, therefore, the ball bearing assembly for turbocharger is provided. SUMMARY
[0003] In view of the defects of the prior art, the utility model provides a ball bearing assembly for turbocharger, first sliding ring and second sliding ring are arranged, so that the gap between the outer ring and the inner ring is completely closed, and particles are prevented from entering the first groove and the second groove, thereby solving the problem that dust and sand can enter the turbocharger and damage the bearing if the air cleaner filter element is not replaced or damaged for a long time in the background art.
[0004] To achieve the above object, the utility model discloses a ball bearing assembly for turbocharger, which comprises an outer ring and an inner ring, two first grooves are formed in the circumferential inner side of the outer ring, two second grooves are formed in the circumferential outer side of the inner ring, a plurality of balls are slidably connected between the first groove and the second groove, a retainer is further arranged between the first groove and the second groove, the plurality of balls are located on the inner side of the retainer, an annular groove is formed in the circumferential outer side of the outer ring, the inner side of the annular groove is threadedly connected with a cover body, a through groove is formed in the outer side middle part of the cover body, a first sliding groove and a second sliding groove are formed in the inner side of the cover body, a first installation groove and a second installation groove are formed in the side of the outer ring and the inner ring close to the cover body, a first sliding ring is slidably connected to the inner side of the first installation groove, the outer side of the first sliding ring is in sliding contact with the inner side of the first sliding groove, a first spring is arranged between the first sliding ring and the first installation groove, a second sliding ring is slidably connected to the inner side of the second installation groove, the outer side of the second sliding ring is in sliding contact with the inner side of the second sliding groove, a second spring is arranged between the second sliding ring and the second installation groove, the first sliding ring and the second sliding ring are both made of graphite.
[0005] As a preferred technical scheme of the utility model, the centers of the outer ring and the inner ring coincide.
[0006] As a preferred technical scheme of the utility model, the positions of the first groove and the second groove correspond to each other.
[0007] The inner diameter of the through groove is same as the inner diameter of the inner ring, and the center of the through groove and the center of the inner ring are on the same horizontal line.
[0008] The first sliding groove and the second sliding groove are concentric structure, and the diameter of the first sliding groove is larger than the diameter of the second sliding groove.
[0009] The first mounting groove and the second mounting groove are concentric structure, and the position of the first mounting groove corresponds to the position of the first sliding groove.
[0010] The position of the second mounting groove corresponds to the position of the second sliding groove.
[0011] The turbine supercharger ball bearing assembly has the following beneficial effects:
[0012] 1. The turbine supercharger ball bearing assembly is completely sealed between the outer ring and the inner ring by the first sliding ring and the second sliding ring, so that particles are prevented from entering the first groove and the second groove, and the problem that dust and sand will enter the turbine supercharger and damage the bearing if the air filter element is not replaced or damaged for a long time is solved.
[0013] 2. When the first sliding ring and the second sliding ring are worn, the first spring and the second spring push the first sliding ring and the second sliding ring to tightly contact the first sliding groove and the second sliding groove respectively, thereby prolonging the service life of the seal. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a cross-sectional structure schematic view of the turbine supercharger ball bearing assembly of the utility model.
[0015] Figure 2 It is an enlarged schematic view of A in the turbine supercharger ball bearing assembly of the utility model. Figure 1
[0016] Figure 3 It is a split structure schematic view of the turbine supercharger ball bearing assembly of the utility model.
[0017] Figure 4 It is an enlarged schematic view of B in the turbine supercharger ball bearing assembly of the utility model. Figure 3
[0018] In the figure: 1, outer ring; 2, inner ring; 3, first groove; 4, second groove; 5, ball; 6, cage; 7, annular groove; 8, cover; 9, first sliding groove; 10, second sliding groove; 11, first mounting groove; 12, second mounting groove; 13, first sliding ring; 14, first spring; 15, second sliding ring; 16, second spring; 17, through groove. DETAILED DESCRIPTION
[0019] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.
[0020] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more than two; The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0021] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be mechanically connected, or it can be electrically connected; It can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0022] Please refer to Figures 1 to 4The utility model provides a technical scheme: turbocharger is with ball bearing assembly, including outer ring 1 and inner ring 2, the circumferential inside of outer ring 1 is equipped with two first grooves 3, the circumferential outside of inner ring 2 is equipped with two second grooves 4, a plurality of ball 5 are connected with sliding between first groove 3 and second groove 4, still be equipped with retainer 6 between first groove 3 and second groove 4, a plurality of ball 5 are all located the inside of retainer 6, the circumferential outside of outer ring 1 is equipped with annular groove 7, the inside screw thread connection of annular groove 7 has cover 8, the outside middle part of cover 8 is equipped with through slot 17, the inside of cover 8 is equipped with first sliding slot 9 and second sliding slot 10, and the side of outer ring 1 and inner ring 2 is equipped with first installation groove 11 and second installation groove 12 respectively close cover 8, the inside sliding connection of first installation groove 11 has first sliding ring 13, and the outside of first sliding ring 13 and the inside sliding contact of first sliding slot 9, and the abutment of first spring 14 between first sliding ring 13 and first installation groove 11, the inside sliding connection of second installation groove 12 has second sliding ring 15, and the outside of second sliding ring 15 and the inside sliding contact of second sliding slot 10, and the abutment of second spring 16 between second sliding ring 15 and second installation groove 12, and first sliding ring 13 and second sliding ring 15 are graphite material, and the circle center of outer ring 1 and inner ring 2 coincides, and the position of first groove 3 and the position of second groove 4 correspond, and the inner diameter of through slot 17 and the inner diameter of inner ring 2 are same, and the circle center of through slot 17 and the circle center of inner ring 2 are on the same horizontal line, and first sliding slot 9 and second sliding slot 10 are concentric circle structure, and the diameter of first sliding slot 9 is greater than the diameter of second sliding slot 10, and first installation groove 11 and second installation groove 12 are concentric circle structure, and the position of first installation groove 11 and the position of first sliding slot 9 correspond, and the position of second installation groove 12 and the position of second sliding slot 10 correspond;
[0023] The outer side of the outer ring 1 and the inner side of the inner ring 2 are provided with an interference fit, the cover body 8 is threadedly connected to the outer side of the outer ring 1, so that the side of the ball bearing facing the impeller is closed, during the operation of the ball bearing, the inner ring 2 is driven to rotate by the transmission shaft, the plurality of balls 5 between the inner ring 2 and the outer ring 1 reduce the friction by rolling, in this process, the second sliding ring 15 on the second mounting groove 12 slides and contacts along the second sliding groove 10 on the cover body 8, the first sliding ring 13 on the first mounting groove 11 slides and contacts with the first sliding groove 9 on the cover body 8, so as to completely close the gap between the outer ring 1 and the inner ring 2, and avoid particles from entering the first groove 3 and the second groove 4, so as to damage the balls 5, since the first sliding ring 13 and the second sliding ring 15 are both made of graphite, the self-lubricating and high-temperature-resistant properties of graphite are utilized, so that the first sliding ring 13 and the second sliding ring 15 can operate for a long time, when the first sliding ring 13 and the second sliding ring 15 are worn, the first spring 14 and the second spring 16 push the first sliding ring 13 and the second sliding ring 15 to tightly contact the first sliding groove 9 and the second sliding groove 10 respectively, so as to prolong the service life of the seal.
[0024] The outer side of the outer ring 1 and the inner side of the inner ring 2 are provided with an interference fit, the cover body 8 is threadedly connected to the outer side of the outer ring 1, so that the side of the ball bearing facing the impeller is closed, during the operation of the ball bearing, the inner ring 2 is driven to rotate by the transmission shaft, the plurality of balls 5 between the inner ring 2 and the outer ring 1 reduce the friction by rolling, in this process, the second sliding ring 15 on the second mounting groove 12 slides and contacts along the second sliding groove 10 on the cover body 8, the first sliding ring 13 on the first mounting groove 11 slides and contacts with the first sliding groove 9 on the cover body 8, so as to completely close the gap between the outer ring 1 and the inner ring 2, and avoid particles from entering the first groove 3 and the second groove 4, so as to damage the balls 5, since the first sliding ring 13 and the second sliding ring 15 are both made of graphite, the self-lubricating and high-temperature-resistant properties of graphite are utilized, so that the first sliding ring 13 and the second sliding ring 15 can operate for a long time, when the first sliding ring 13 and the second sliding ring 15 are worn, the first spring 14 and the second spring 16 push the first sliding ring 13 and the second sliding ring 15 to tightly contact the first sliding groove 9 and the second sliding groove 10 respectively, so as to prolong the service life of the seal.
[0025] The above merely describes a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.
Claims
1. Ball bearing assembly for turbochargers, comprising an outer ring (1) and an inner ring (2), characterized in that: The circumference of the outer ring (1) is provided with two first grooves (3), the circumference of the inner ring (2) is provided with two second grooves (4), a plurality of balls (5) are slidably connected between the first grooves (3) and the second grooves (4), a retainer (6) is further arranged between the first grooves (3) and the second grooves (4), the plurality of balls (5) are located on the inner side of the retainer (6), the circumference of the outer ring (1) is provided with an annular groove (7), the inner side of the annular groove (7) is threadedly connected with a cover body (8), the outer side of the middle part of the cover body (8) is provided with a through groove (17), the inner side of the cover body (8) is provided with a first sliding groove (9) and a second sliding groove (10), the side of the outer ring (1) and the inner ring (2) close to the cover body (8) is respectively provided with a first mounting groove (11) and a second mounting groove (12), the inner side of the first mounting groove (11) is slidably connected with a first sliding ring (13), the outer side of the first sliding ring (13) is in sliding contact with the inner side of the first sliding groove (9), the first sliding ring (13) and the first mounting groove (11) are in abutment with a first spring (14), the inner side of the second mounting groove (12) is slidably connected with a second sliding ring (15), the outer side of the second sliding ring (15) is in sliding contact with the inner side of the second sliding groove (10), the second sliding ring (15) and the second mounting groove (12) are in abutment with a second spring (16), the first sliding ring (13) and the second sliding ring (15) are both made of graphite.
2. The ball bearing assembly for a turbocharger as set forth in claim 1, characterized by: The outer ring (1) and the inner ring (2) have the same center.
3. The ball bearing assembly for a turbocharger as set forth in claim 1, characterized by: The position of the first groove (3) corresponds to the position of the second groove (4).
4. The ball bearing assembly for a turbocharger as set forth in claim 1, characterized by: The inner diameter of the through groove (17) is the same as the inner diameter of the inner ring (2), and the center of the through groove (17) and the center of the inner ring (2) are on the same horizontal line.
5. The ball bearing assembly for a turbocharger as set forth in claim 1, characterized by: The first sliding groove (9) and the second sliding groove (10) are concentric, and the diameter of the first sliding groove (9) is greater than the diameter of the second sliding groove (10).
6. The ball bearing assembly for a turbocharger of claim 1, wherein: The first mounting groove (11) and the second mounting groove (12) are concentric, and the position of the first mounting groove (11) corresponds to the position of the first sliding groove (9).
7. The ball bearing assembly for a turbocharger of claim 1 wherein: The position of the second mounting groove (12) corresponds to the position of the second sliding groove (10).