Novel stamping outer ring structure with vibration attenuation and noise reduction functions and vibration attenuation and noise reduction needle bearing
By designing a novel stamped outer ring with a triangular structure, the vibration and noise problems of the bearing when it mates with the needle roller were solved, resulting in lower vibration and noise levels.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2026-04-07
AI Technical Summary
Conventional stamped outer ring needle roller bearings have vibration and noise problems when the shaft and needle rollers are mated.
The new stamped outer ring adopts a triangular structure with three outwardly arched elastic arc edges and a rounded transition between adjacent sides to ensure a tight fit with the shaft without gaps.
By improving the outer ring structure, vibration and noise were reduced, resulting in lower vibration and noise levels.
Smart Images
Figure CN224093696U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing technology, and in particular to a novel bearing stamped outer ring structure with vibration reduction and noise reduction, and a vibration-reducing and noise-reducing needle roller bearing. Background Technology
[0002] Conventional stamped outer ring needle roller bearings are generally circular in structure. When the bearing is pressed into the housing bore, there is a certain clearance between the shaft and the needle rollers, which results in vibration and noise. Utility Model Content
[0003] The purpose of this application is to provide a novel bearing stamped outer ring structure with vibration reduction and noise reduction, and a vibration-reducing and noise-reducing needle roller bearing.
[0004] To achieve the above objectives, this utility model provides a novel stamped outer ring structure with vibration reduction and noise reduction, including an outer ring body. The outer ring body is a triangular structure with three outwardly arched elastic arc edges that connect in pairs, and the connection between adjacent elastic arc edges adopts a rounded transition.
[0005] Preferably, the diameter of the circle containing the elastic arc edge is larger than the diameter of the circles containing the three endpoints of the connection point of the elastic arc edge;
[0006] Through testing, the diameter of the circle containing the elastic arc edge is preferably 42mm, and the diameter of the circle containing the three endpoints of the connection of the elastic arc edge is preferably 36mm.
[0007] Correspondingly, the radius of the circle containing the elastic arc edge is 1.57, and the radius of the arc at the connection between two adjacent elastic arc edges is 0.05.
[0008] Correspondingly, the maximum inscribed circle diameter of the three elastic arc edges is 37.5 mm, which is smaller than the minimum circumscribed circle diameter of the three endpoints at the connection point, which is 38.2 mm. The circle of the three elastic arc edges is pressed into the seat hole with a return radius of 0.14 to 0.16 mm, and there is no clearance fit with the shaft.
[0009] This utility model also provides a vibration-damping and noise-reducing needle roller bearing, including a cage and needle rollers, wherein the cage is fitted with the above-mentioned novel stamped outer ring structure with vibration-damping and noise-reducing properties.
[0010] In summary, this utility model has the following beneficial effects: the novel bearing stamped outer ring structure with vibration reduction and noise reduction and the vibration-reducing and noise-reducing needle roller bearing change the original circular stamped outer ring into a triangular irregular structure. When the bearing is pressed into the housing hole, the three elastic arc edges fit tightly with the shaft without gap, which can reduce vibration and thus further reduce noise. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of the novel bearing stamped outer ring with vibration reduction and noise reduction of this utility model;
[0012] Figure 2 This is a schematic diagram of the outer diameter profile of the novel bearing stamped outer ring structure with vibration reduction and noise reduction of this utility model;
[0013] Figure 3 This is a schematic diagram of the vibration-damping and noise-reducing needle roller bearing of this utility model.
[0014] Figure 4 This is a schematic diagram of the structure of the vibration-damping and noise-reducing needle roller bearing of this utility model in use. Detailed Implementation
[0015] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.
[0016] Example 1:
[0017] like Figure 1 The diagram shows a novel stamped outer ring structure with vibration reduction and noise reduction features, comprising an outer ring body.
[0018] Specifically, the outer ring body is a triangular irregular structure with three outwardly arched and connected elastic arc edges 1. The connection between adjacent elastic arc edges 1 is transitioned by an arc 2. The three endpoints of the three arcs 2 are A, B, and C. The diameter of the circle containing the elastic arc edge 1 is larger than the diameter of the circle containing the three endpoints A, B, and C at the connection of the elastic arc edge 1. The diameter of the circle containing the elastic arc edge 1 is preferably 42 mm, and the diameter of the circle containing the three endpoints at the connection of the elastic arc edge 1 is preferably 36 mm. At the same time, the radius of the circle containing the elastic arc edge 1 is 1.57, and the radius of the arc 2 at the connection between adjacent elastic arc edges 1 is 0.05. The maximum inscribed circle diameter of the three elastic arc edges 1 is 37.5 mm, which is smaller than the minimum circumscribed circle diameter of the three endpoints at the connection, which is 38.2 mm. The three elastic arc edges 1 are pressed into the seat hole with a rounding radius of 0.14 to 0.16 mm, and have a clearance-free fit with the shaft.
[0019] Combination Figure 2As shown in the figure, the dashed lines represent the circles containing the three endpoints A, B, and C of the three arcs. The circles containing the three endpoints A, B, and C are conventional stamped outer ring structures. The three elastic arc edges 1 of this application are located inside these circles, meaning that the diameter of the circle containing the elastic arc edges 1 is larger than the diameter of the circles containing the three endpoints A, B, and C at the connection of the elastic arc edges 1. The elastic arc edges 1 have a certain deformation capacity, and when their inner side is subjected to pressure, they will deform and gradually become a circular structure.
[0020] Example 2:
[0021] This utility model also provides a vibration-damping and noise-reducing needle roller bearing, combined with... Figure 3 , Figure 4 As shown, the device includes a cage 3 and needle rollers 4. Both the cage 3 and needle rollers 4 adopt conventional structures. The cage 3 is fitted with the aforementioned novel stamped outer ring structure 5, which has vibration reduction and noise reduction properties. The vibration-damping and noise-reducing needle roller bearing 6 is installed inside the housing 8. The shaft 7 passes through the vibration-damping and noise-reducing needle roller bearing 6. The three elastic arc-shaped edges of the stamped outer ring of the vibration-damping and noise-reducing needle roller bearing 6 undergo a certain deformation, thereby tightly fitting with the shaft 7 and the inner wall of the housing 8, reducing vibration, and thus further reducing noise.
[0022] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape, principle and application direction of this application should be covered within the scope of protection of this application.
Claims
1. A novel stamped outer ring structure with vibration reduction and noise reduction, comprising an outer ring body, characterized in that: The outer ring body is a triangular structure with three outwardly arched elastic arc edges that connect in pairs, and the connection between adjacent elastic arc edges is a rounded transition.
2. The novel stamped outer ring structure with vibration reduction and noise reduction according to claim 1, characterized in that: The diameter of the circle containing the elastic arc edge is greater than the diameter of the circles containing the three endpoints of the connection point of the elastic arc edge.
3. The novel stamped outer ring structure with vibration reduction and noise reduction according to claim 2, characterized in that: The diameter of the circle containing the elastic arc edge is 42mm, and the diameter of the circle containing the three endpoints of the connection of the elastic arc edge is 36mm.
4. The novel stamped outer ring structure with vibration reduction and noise reduction according to claim 2, characterized in that: The radius of the circle containing the elastic arc edge is 1.57, and the radius of the arc at the connection between two adjacent elastic arc edges is 0.
05.
5. The novel stamped outer ring structure with vibration reduction and noise reduction according to claim 2, characterized in that: The maximum inscribed circle diameter formed by the three elastic arc edges is 37.5 mm, which is smaller than the minimum circumscribed circle diameter of the three endpoints at the connection point, which is 38.2 mm. The circle containing the three elastic arc edges presses into the seat hole with a return radius of 0.14 to 0.16 mm, and has a clearance-free fit with the shaft.
6. A vibration-damping and noise-reducing needle roller bearing, comprising a cage and needle rollers, characterized in that: The cage outer sleeve is provided with a novel stamped outer ring structure as described in any one of claims 1-5, which has vibration reduction and noise reduction properties.