Roller pin with noise reduction structure
By embedding nylon inserts on the outer peripheral wall of the needle roller, the problem of high noise in the bearing is solved, and the effect of reducing noise and improving bonding firmness is achieved.
Patent Information
- Application Number
- CN202422668271.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-11-01
AI Technical Summary
The existing needle rollers are pure metal materials, resulting in high noise when used in bearings.
A ring groove embedded in nylon insert is provided on the outer peripheral wall of the needle roller, and the metal contact noise is reduced through the fitting structure of the nylon insert and the needle roller body.
Effectively reduce noise during use of bearings, improve the firmness and reliability of the bonding between the nylon insert and the needle roller body, reduce friction and enhance rotational smoothness.
Smart Images
Figure CN223152558U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of needle rollers, and more specifically, to a needle roller with a noise reduction structure. Background Art
[0002] As an important component on a bearing, when in use, a needle roller is rotatably connected to a needle roller cage, and the needle roller is located between the inner ring and the outer ring of the bearing; since the currently available needle rollers on the market are columnar objects made of metal materials, after the needle rollers are applied to the bearing, due to the needle rollers being pure metal components, there is a drawback of high rotational noise when the needle rollers rotate. Content of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a needle roller with a noise reduction structure, which can reduce the noise of the bearing during use after being applied to the bearing.
[0004] The utility model provides a needle roller with a noise reduction structure, which includes a needle roller body. A plurality of annular grooves are arranged on the outer peripheral wall of the needle roller body at intervals along the axial direction of the needle roller body. A nylon insert is embedded in each annular groove, and the outer peripheral wall of each nylon insert coincides with the outer peripheral wall of the needle roller body.
[0005] After the utility model adopts the above structure, after the needle roller is applied to the bearing, under the action of the nylon insert, since the part of the outer peripheral wall of the needle roller in contact with the inner ring and the outer ring of the bearing is not pure metal, the noise of the bearing during use can be reduced.
[0006] In a possible implementation manner, a plurality of first tooth grooves are arranged at the bottom of each annular groove at intervals along the circumferential direction of the annular groove, and each nylon insert is engaged with a plurality of first tooth grooves at the corresponding position; after adopting this structure, the nylon insert can be embedded in the first tooth grooves, thereby improving the reliability of the circumferential limit of the nylon insert and the needle roller body, that is, further improving the firmness of the combination of the nylon insert and the needle roller body.
[0007] In a possible implementation manner, annular steps are arranged on both sides at the outer edge of each annular groove, and each nylon insert is engaged with the annular steps at the corresponding position; after adopting this structure, the bonding area between the nylon insert and the needle roller body can be increased, thereby further improving the bonding strength between the nylon insert and the needle roller body.
[0008] In a possible implementation, a plurality of second tooth grooves are provided on each annular step, and the second tooth grooves are spaced apart in the circumferential direction of the annular step. Both ends of each nylon insert are engaged with a plurality of second tooth grooves at corresponding positions. After adopting this structure, the nylon insert can be embedded in the second tooth grooves, thereby improving the reliability of the circumferential limit between the nylon insert and the needle roller body, that is, further improving the firmness of the combination between the nylon insert and the needle roller body.
[0009] In a possible implementation, annular rounded surfaces are formed at the outer edges of both ends of the needle roller body in the axial direction. After the outer peripheral walls of both ends of the needle roller body in the axial direction are provided as annular rounded surfaces, after the needle roller body is installed on the needle roller cage in the bearing, the friction between both ends of the needle roller body and the needle roller cage can be effectively reduced, that is, the rotational damping between the needle roller body and the needle roller cage can be reduced, that is, the rotation of the needle roller body and the needle roller cage can be made smoother. In addition, the noise generated when the needle roller body rotates can also be reduced. Description of the Drawings
[0010] Figure 1 is a schematic cross-sectional structure diagram of the present utility model;
[0011] Figure 2 is a schematic three-dimensional structure diagram of the needle roller body. Detailed Implementation Modes
[0012] First of all, those skilled in the art should understand that these implementation modes are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can adjust them as needed to adapt to specific application scenarios.
[0013] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.
[0014] In the embodiments of the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0015] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0016] See Figure 1-2 As shown, an embodiment of the present application discloses a needleroll with a noise reduction structure, including a needleroll body 1. A plurality of annular grooves 11 are provided on the outer peripheral wall of the needleroll body 1 and are spaced apart along the axial direction of the needleroll body 1. A nylon insert 2 is embedded in each annular groove 11, and the outer peripheral wall of each nylon insert 2 coincides with the outer peripheral wall of the needleroll body 1. In the above structure, after the needleroll body is produced, the needleroll body is placed in a mold, and nylon material is poured into the mold and finally forms a nylon insert on the needleroll body.
[0017] A plurality of first tooth grooves 12 are provided at the bottom of each annular groove 11 and are spaced apart along the circumferential direction of the annular groove 11. Each nylon insert 2 is engaged with a plurality of first tooth grooves 12 at the corresponding position. By adopting this structure, the nylon insert can be embedded in the first tooth groove, thereby improving the reliability of the circumferential limit between the nylon insert and the needleroll body, that is, further improving the firmness of the combination between the nylon insert and the needleroll body.
[0018] Annular steps 13 are provided on both sides at the outer edge of each annular groove 11. Each nylon insert 2 is engaged with the annular steps 13 at the corresponding position. By adopting this structure, the bonding area between the nylon insert and the needleroll body can be increased, thereby further improving the bonding strength between the nylon insert and the needleroll body.
[0019] A plurality of second tooth grooves 14 are provided on each annular step 13 and are spaced apart along the circumferential direction of the annular step 13. Both ends of each nylon insert 2 are engaged with a plurality of second tooth grooves 14 at the corresponding position. By adopting this structure, the nylon insert can be embedded in the second tooth groove, thereby improving the reliability of the circumferential limit between the nylon insert and the needleroll body, that is, further improving the firmness of the combination between the nylon insert and the needleroll body.
[0020] Circular fillet surfaces 15 are formed at the outer edges at both axial ends of the needle roller body 1; after the outer peripheral walls at both axial ends of the needle roller body are provided as circular fillet surfaces, after the needle roller body is installed on the needle roller cage in the bearing, the friction between both ends of the needle roller body and the needle roller cage can be effectively reduced, that is, the rotational damping between the needle roller body and the needle roller cage can be reduced, which means that the rotation of the needle roller body and the needle roller cage can be made smoother. In addition, the noise generated when the needle roller body rotates can also be reduced.
[0021] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A needle roller with a noise reduction structure, comprising a needle roller body (1), characterized in that: On the outer peripheral wall of the needle roller body (1), a plurality of annular grooves (11) are provided at intervals in the axial direction of the needle roller body (1), and a nylon insert (2) is embedded in each annular groove (11). The outer peripheral wall of each nylon insert (2) coincides with the outer peripheral wall of the needle roller body (1).
2. The needle roller with a noise reduction structure according to claim 1, characterized in that: At the bottom of each annular groove (11), a plurality of first tooth grooves (12) are provided at intervals in the circumferential direction of the annular groove (11), and each nylon insert (2) is engaged with a plurality of first tooth grooves (12) at the corresponding position.
3. The needle roller with a noise reduction structure according to claim 1 or 2, characterized in that: On both sides at the outer edge of each annular groove (11), annular steps (13) are provided, and each nylon insert (2) is engaged with the annular steps (13) at the corresponding position.
4. The needle roller with a noise reduction structure according to claim 3, wherein: On each annular step (13), a plurality of second tooth grooves (14) are provided at intervals in the circumferential direction of the annular step (13), and both ends of each nylon insert (2) are engaged with a plurality of second tooth grooves (14) at the corresponding position.
5. The needle roller with a noise reduction structure according to claim 1 or 2 or 4, characterized in that: Annular rounded surfaces (15) are formed at the outer edges at both ends of the needle roller body (1) in the axial direction.