Bearing

Abstract

The invention provides a bearing which comprises an outer ring, an inner ring, a rolling body and a retainer, the retainer comprises a main body part and a plurality of extension parts, and the main body part is annular; the plurality of extension parts are arranged on the side surface of the main body part, and the adjacent extension parts and part of the main body part between the extension parts form pockets for accommodating rolling bodies; the extension part comprises a first extension section and a second extension section, the first extension section is connected with the main body part, the second extension section is connected with the first extension section, and the radial outer surfaces of the first extension section and the second extension section shrink in the direction away from the main body part towards the direction close to the center of the retainer. By adopting the bearing provided by the invention, the material of the radial outer surface of the retainer close to the end face of the extension part is reduced, the rolling body can be more easily mounted in the pocket of the retainer, the damage risk caused in the rolling body assembly process is effectively reduced, and meanwhile, the materials of other positions of the retainer are reserved as much as possible, and the strength of the retainer is prevented from being influenced.

Description

bearings Technical Field

[0001] The present application relates to the technical field of bearings, and more particularly to an easy-to-assemble bearing. Background Art

[0002] As shown in Figure 1, the bearing includes an outer ring 1', an inner ring 3', a retainer 4' and rolling elements 2'. During the bearing assembly process, due to the limitations of the outer rib of the inner ring and the material characteristics of the retainer 1', the retainer 1' is prone to damage the surface of the rolling elements 2' when the rolling elements 2' are inserted into the pockets of the retainer 1'.

[0003] The risk of rolling element 2' damage can be reduced by reducing the height of the inner ring outer rib, or by milling additional mounting grooves on the inner ring outer rib to facilitate the installation of rolling element 2' and avoid damage to rolling element 2'. However, if the risk of rolling element 2' damage is reduced by reducing the height of the inner ring outer rib, the lowered height of the inner ring outer rib increases the risk of rolling element 2' falling after assembly. If mounting grooves are milled on the inner ring outer rib to facilitate the installation of rolling element 2', all rolling elements 2' must pass through the mounting grooves before they can be installed in the cage pockets, which greatly affects assembly efficiency.

[0004] Summary of the Invention

[0005] The purpose of the present application is to provide a bearing that can make it easier for rolling elements to be installed into cage pockets and reduce the risk of damage caused during the assembly process of the rolling elements.

[0006] The present application provides a bearing, comprising an outer ring, an inner ring, rolling elements, and a cage, wherein the cage comprises:

[0007] a main body portion, which is annular; and

[0008] a plurality of extensions provided on the side of the main body, wherein adjacent extensions and portions of the main body between the extensions form pockets for accommodating rolling elements;

[0009] Wherein, the extension portion includes a first extension segment and a second extension segment, the first extension segment is connected to the main body portion, and the second extension segment is connected to the first extension segment, and the radial outer surfaces of the first extension segment and the second extension segment both shrink in the direction away from the main body portion toward the center of the retaining frame.

[0010] According to an embodiment of the present application, on the same radial cross-section, the contour line of the radial outer surface of the first extension segment is a curve or a straight line, and the contour line of the radial outer surface of the second extension segment is a curve or a straight line.

[0011] According to an embodiment of the present application, the contour line of the radial outer surface of the first extension segment and the contour line of the radial outer surface of the second extension segment form a complete curve.

[0012] According to an embodiment of the present application, the endpoint of the contour line of the radial outer surface of the main body away from the extension portion is P1', the intersection point of the contour line of the radial outer surface of the main body and the contour line of the radial outer surface of the first extension segment is P2', the intersection point of the contour line of the radial outer surface of the first extension segment and the contour line of the radial outer surface of the second extension segment is P3', and the endpoint of the contour line of the radial outer surface of the second extension segment away from the main body is P4'.

[0013] The angle formed by the line connecting P2' and P3' and the contour line of the radial outer surface of the main body is smaller than the angle formed by the line connecting P3' and P4' and the contour line of the radial outer surface of the main body.

[0014] According to an embodiment of the present application, when an envelope circle is formed by the center of the retaining frame and P2 ′, P1 ′, P3 ′ and P4 ′ are all located within the envelope circle.

[0015] According to an embodiment of the present application, the extension portion also includes a third extension segment, which is connected to the second extension segment, and the radial outer surface of the third extension segment shrinks from the end of the second extension segment in the direction away from the main body portion toward the center of the retaining frame.

[0016] According to an embodiment of the present application, on the same radial cross-section, the contour line of the radial outer surface of the first extension segment is a curve or a straight line, the contour line of the radial outer surface of the second extension segment is a curve or a straight line, and the contour line of the radial outer surface of the third extension segment is a curve or a straight line.

[0017] According to an embodiment of the present application, the contour line of the radial outer surface of the first extension segment, the contour line of the radial outer surface of the second extension segment, and the contour line of the radial outer surface of the third extension segment form a complete curve.

[0018] According to an embodiment of the present application, the extension portion is provided on both side surfaces of the main body.

[0019] According to an embodiment of the present application, the midpoint of the contour line of the radial outer surface of the main body is P1. On any side, the intersection point of the contour line of the radial outer surface of the main body and the contour line of the radial outer surface of the first extension segment is P2. The intersection point of the contour line of the radial outer surface of the first extension segment and the contour line of the radial outer surface of the second extension segment is P3. The endpoint of the contour line of the radial outer surface of the second extension segment away from the main body is P4.

[0020] The angle formed by the line connecting P2 and P3 and the contour line of the radial outer surface of the main body is smaller than the angle formed by the line connecting P3 and P4 and the contour line of the radial outer surface of the main body.

[0021] In the bearing of the present application, the extension portion includes a first extension section and a second extension section. The radial outer surfaces of the first extension section and the second extension section shrink in the direction away from the main body portion toward the center of the retainer, effectively reducing the material of the radial outer surface of the retainer near the end face of the extension portion, making it easier to install the rolling element into the retainer pocket and effectively reducing the risk of damage caused by the rolling element assembly process. At the same time, as much material as possible in other positions of the retainer is retained to avoid affecting the strength of the retainer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a structural diagram of a bearing in the prior art;

[0023] FIG2 is a structural diagram of a bearing in an embodiment of the present application;

[0024] FIG3 is an enlarged view of the retainer in the embodiment of the present application;

[0025] FIG4 is an enlarged view of a retaining frame in another embodiment of the present application. DETAILED DESCRIPTION

[0026] The following detailed description and accompanying drawings are used to illustrate the principles of the present application. The present application is not limited to the preferred embodiments described, and the scope of protection of the present application is defined by the claims.

[0027] As shown in Figures 2-4, an embodiment of the present application provides a bearing, which includes an outer ring 1, an inner ring 3, a rolling element 2 and a retaining frame 4. The retaining frame 4 includes a main body 41 and a plurality of extensions 42 extending from the main body 41. The main body 41 and the extensions 42 are made of the same material, and optionally, the main body 41 and the extensions 42 are integrally arranged, that is, the retaining frame 4 is an integrated structure.

[0028] The main body 41 is annular and serves as the main body of the retainer 4. Multiple extensions 42 are provided on the side surfaces of the main body 41. Specifically, these extensions 42 extend outward from the axial side surfaces of the main body 41. Adjacent extensions 42 and the portion of the main body 41 between them form pockets for accommodating the rolling elements 2. The rolling elements 2 are mounted within these pockets, and the retainer 4 is used to retain the rolling elements 2 within these pockets. The retainer 4 and the rolling elements 2 are positioned between the inner ring 3 and the outer ring 1.

[0029] The extension portion 42 includes a first extension section 421 and a second extension section 422. The first extension section 421 is connected to the main body 41, and the second extension section 422 is connected to the first extension section 421. The radial outer surfaces of the first extension section 421 and the second extension section 422 both converge toward the center of the retainer 4 as they move away from the main body 41. In other words, the extension portion 42 is segmented, with the first extension section 421 and the second extension section 422 integrally formed. One end of the first extension section 421 is connected to the main body 41, and the other end is connected to the second extension section 422. One end of the second extension section 422 is connected to the first extension section 421, and the other end is suspended.

[0030] That is, the radial outer surface of retainer 4 is composed of three sections: the main body 41, the first extension 421, and the second extension 422. The radial outer surface of the main body 41 is cylindrical. The radial outer surfaces of the first and second extensions 421, 422 both taper toward the center of retainer 4 as they move away from the main body 41, resulting in an axially decreasing diameter of the radial outer surface of the extension 42. In one example, the radial outer surface of the main body 41 is cylindrical; however, it may also be a tapered or curved surface with a certain slope. The radial outer surface of the first extension 421 tapers toward the center of retainer 4 relative to the radial outer surface of the main body 41 as it moves away from the main body 41.

[0031] In a bearing using an embodiment of the present application, the extension portion 42 of the retainer 4 includes a first extension section 421 and a second extension section 422. The radial outer surfaces of the first extension section 421 and the second extension section 422 both contract in a direction away from the main body 41 toward the center of the retainer 4, effectively reducing the material on the radial outer surface of the retainer 4 near the end face of the extension section 42. During bearing assembly, this makes it easier to install the rolling elements 2 into the pockets of the retainer 4 and effectively reduces the risk of damage to the rolling elements 2 during assembly. At the same time, it also preserves as much material as possible in other locations of the retainer 4 to avoid affecting the strength of the retainer 4. Furthermore, using a bearing using an embodiment of the present application can prevent damage to the rolling elements 2 during installation in the retainer 4 while reducing the risk of the rolling elements 2 falling out of the pockets of the retainer 4. Furthermore, since no additional mounting grooves need to be milled, assembly is facilitated and efficiency is improved.

[0032] On the same radial cross-section, the contour line of the radial outer surface of the first extension section 421 is a curve or a straight line, and the contour line of the radial outer surface of the second extension section 422 is a curve or a straight line. As shown in Figures 3 and 4, the contour line of the radial outer surface of the first extension section 421 is a straight line, and the contour line of the radial outer surface of the second extension section 422 is a straight line. In other words, the radial outer surface of the first extension section 421 and the radial outer surface of the second extension section 422 are tapered surfaces that converge toward the center of the retainer 4, but the degree of inclination of the two sections is different, with the second extension section 422 being more inclined toward the center of the retainer 4.

[0033] The contour line of the radial outer surface of the first extension section 421 and the contour line of the radial outer surface of the second extension section 422 form a complete curve. In this way, the radial outer surface of the first extension section 421 and the radial outer surface of the second extension section 422 can transition more smoothly.

[0034] In the embodiment of the present application, the extension portion 42 may be provided on only one side surface of the main body portion 41 . In this case, the retaining frame 4 is a single-row retaining frame, as shown in FIG. 3 .

[0035] When the extension portion 42 is provided only on one side surface of the main body portion 41, the endpoint of the contour line of the radial outer surface of the main body portion 41 away from the extension portion 42 is P1', the intersection point of the contour line of the radial outer surface of the main body portion 41 and the contour line of the radial outer surface of the first extension section 421 is P2', the intersection point of the contour line of the radial outer surface of the first extension section 421 and the contour line of the radial outer surface of the second extension section 422 is P3', and the endpoint of the contour line of the radial outer surface of the second extension section 422 away from the main body portion 41 is P4'.

[0036] The angle formed by the line connecting P2' and P3' and the contour line of the radial outer surface of the main body 41 is smaller than the angle formed by the line connecting P3' and P4' and the contour line of the radial outer surface of the main body 41. As shown in FIG3 , the angle formed by the line connecting P2' and P3' and the contour line of the radial outer surface of the main body 41 is α', and the angle formed by the line connecting P3' and P4' and the contour line of the radial outer surface of the main body 41 is β'. α'<β', that is, the second extension section 422 has a greater tendency to shrink toward the center of the retainer 4.

[0037] When the center of the retainer 4 and P2' form an enveloping circle, P1', P3', and P4' are all located within the enveloping circle. As shown in Figure 3, the center of the retainer 4 and P2' form an enveloping circle with a radius of R, and P1', P3', and P4' are all located within the enveloping circle with a radius of R, facilitating the assembly of the retainer 4 within the outer ring 1.

[0038] Furthermore, the extension portion 42 also includes a third extension segment, which is connected to the second extension segment 422. The radial outer surface of the third extension segment contracts from the end of the second extension segment 422 away from the main body 41 toward the center of the retainer 4. In other words, the extension portion 42 includes a first extension segment 421, a second extension segment 422, and a third extension segment. The first extension segment 421, the second extension segment 422, and the third extension segment are integrally formed. One end of the first extension segment 421 is connected to the main body 41, and the other end is connected to the second extension segment 422. One end of the second extension segment 422 is connected to the first extension segment 421, and the other end is connected to the third extension segment. One end of the third extension segment is connected to the second extension segment 422, and the other end is suspended.

[0039] That is, the radial outer surface of the retaining frame 4 is composed of four sections of contours, namely the main body 41, the first extension section 421, the second extension section 422 and the third extension section. The radial outer surfaces of the first extension section 421, the second extension section 422 and the third extension section all shrink in the direction away from the main body 41 toward the center of the retaining frame 4, so that the radial outer surface of the extension section 42 tends to decrease in diameter in the axial direction.

[0040] In the bearings of the embodiments of the present application, the extension portion 42 of the retainer 4 includes a first extension section 421, a second extension section 422, and a third extension section. The radial outer surfaces of the first extension section 421, the second extension section 422, and the third extension section all converge toward the center of the retainer 4 as they move away from the main body 41. This effectively reduces the material on the radial outer surface of the retainer 4 near the end face of the extension section 42. During bearing assembly, this makes it easier to install the rolling elements 2 into the pockets of the retainer 4 and effectively reduces the risk of damage to the rolling elements 2 during assembly. At the same time, it also preserves as much material as possible in other locations of the retainer 4 to avoid compromising the strength of the retainer 4. Furthermore, the bearings of the embodiments of the present application can prevent damage to the rolling elements 2 during installation in the retainer 4 while reducing the risk of the rolling elements 2 falling out of the pockets of the retainer 4. Furthermore, since no additional mounting grooves need to be milled, assembly is facilitated and efficiency is improved.

[0041] On the same radial cross section, the contour line of the radial outer surface of the first extension section 421 is a curve or a straight line, the contour line of the radial outer surface of the second extension section 422 is a curve or a straight line, and the contour line of the radial outer surface of the third extension section is a curve or a straight line.

[0042] The contour lines of the radially outer surfaces of the first extension section 421, the second extension section 422, and the third extension section form a complete curve. This allows for a smoother transition between the radially outer surfaces of the first extension section 421, the second extension section 422, and the third extension section.

[0043] Furthermore, the radially outer surfaces of the first extension 421, the second extension 422, and the third extension successively shrink toward the center of the cage 4. This effectively reduces the amount of material on the radially outer surface of the cage 4 near the end face of the extension 42, making it easier to install the rolling elements 2 into the cage 4 pockets and effectively reducing the risk of damage to the rolling elements 2 during assembly. At the same time, it also preserves as much material as possible in other locations of the cage 4 to avoid compromising its strength.

[0044] In the embodiment of the present application, extensions 42 may be provided on both sides of the main body 41. In this case, the retainer 4 is a double-row retainer, as shown in FIG4 . Multiple extensions 42 are provided on one side of the main body 41, and multiple extensions 42 are provided on the opposite side of the main body 41. The two groups of extensions 42 share the main body 41.

[0045] When extension portions 42 are provided on both side surfaces of the main body 41, the midpoint of the contour line of the radial outer surface of the main body 41 is P1, and on any side surface, the intersection point of the contour line of the radial outer surface of the main body 41 and the contour line of the radial outer surface of the first extension section 421 is P2, the intersection point of the contour line of the radial outer surface of the first extension section 421 and the contour line of the radial outer surface of the second extension section 422 is P3, and the endpoint of the contour line of the radial outer surface of the second extension section 422 away from the main body 41 is P4.

[0046] The angle formed by the line connecting P2 and P3 and the contour line of the radial outer surface of the main body 41 is smaller than the angle formed by the line connecting P3 and P4 and the contour line of the radial outer surface of the main body 41. As shown in FIG4 , the angle formed by the line connecting P2 and P3 and the contour line of the radial outer surface of the main body 41 is α, and the angle formed by the line connecting P3 and P4 and the contour line of the radial outer surface of the main body 41 is β. α<β, that is, the second extension section 422 has a greater tendency to shrink toward the center of the retainer 4.

[0047] When the center of retainer 4 and P2 form an enveloping circle, P1, P3, and P4 are all located within the enveloping circle. As shown in Figure 4, the center of retainer 4 and P2 form an enveloping circle with a radius of R, and P1, P3, and P4 are all located within the enveloping circle with a radius of R, facilitating the assembly of retainer 4 within outer ring 1.

[0048] The bearing in the embodiment of the present application may be a spherical roller bearing, or may be other types of bearings that require a retaining frame 4 to mount the rolling element 2 .

[0049] As mentioned above, although the exemplary embodiments of the present application have been described with reference to the accompanying drawings, the present application is not limited to the above specific embodiments, and the scope of protection of the present application should be defined by the claims and their equivalents.

[0050] Reference Signs List

[0051] Outer ring 1, 1'

[0052] Rolling elements 2, 2'

[0053] Inner circle 3, 3'

[0054] Cage 4, 4'

[0055] Main body 41

[0056] Extension 42

[0057] First extension section 421

[0058] Second extension section 422

Claims

1. (Directly change the subject to bearing) A bearing, characterized in that: The bearing comprises an outer ring (1), an inner ring (3), rolling elements (2) and a retaining frame (4), wherein the retaining frame (4) comprises: a main body portion (41) which is annular; and A plurality of extension portions (42) are provided on the side of the main body portion (41), and the portion of the main body portion (41) between adjacent extension portions (42) forms a pocket for accommodating the rolling element (2); Among them, (can it only be a cylindrical surface? Is it possible to be a conical surface or other?) the extension portion (42) includes a first extension section (421) and a second extension section (422), the first extension section (421) is connected to the main body (41), and the second extension section (422) is connected to the first extension section (421), and the radial outer surfaces of the first extension section (421) and the second extension section (422) are both contracted in the direction away from the main body (41) toward the center of the retaining frame (4).

2. The bearing according to claim 1, characterized in that On the same radial cross-section, the contour line of the radial outer surface of the first extension section (421) is a curve or a straight line, and the contour line of the radial outer surface of the second extension section (422) is a curve or a straight line.

3. The bearing according to claim 2, characterized in that The contour line of the radial outer surface of the first extension section (421) and the contour line of the radial outer surface of the second extension section (422) form a complete curve.

4. The bearing according to claim 1, characterized in that The point at which the contour line of the radial outer surface of the main body (41) is away from the end point of the extension portion (42) is P1', the point at which the contour line of the radial outer surface of the main body (41) and the contour line of the radial outer surface of the first extension segment (421) intersect is P2', the point at which the contour line of the radial outer surface of the first extension segment (421) and the contour line of the radial outer surface of the second extension segment (422) intersect is P3', and the point at which the contour line of the radial outer surface of the second extension segment (422) is away from the end point of the main body (41) is P4'. The angle formed by the line connecting P2' and P3' and the contour line of the radial outer surface of the main body (41) is smaller than the angle formed by the line connecting P3' and P4' and the contour line of the radial outer surface of the main body (41).

5. The bearing according to claim 4, characterized in that When an envelope circle is formed by the center of the cage (4) and P2', P1', P3' and P4' are all located within the envelope circle.

6. The bearing according to claim 1, characterized in that The extension portion (42) further includes a third extension segment, the third extension segment being connected to the second extension segment (422), and the radial outer surface of the third extension segment shrinks from the end of the second extension segment (422) in a direction away from the main body (41) toward a direction close to the center of the retaining frame (4).

7. The bearing according to claim 6, characterized in that On the same radial cross-section, the contour line of the radial outer surface of the first extension segment (421) is a curve or a straight line, the contour line of the radial outer surface of the second extension segment (422) is a curve or a straight line, and the contour line of the radial outer surface of the third extension segment is a curve or a straight line.

8. The bearing according to claim 7, characterized in that The contour line of the radial outer surface of the first extension section (421), the contour line of the radial outer surface of the second extension section (422), and the contour line of the radial outer surface of the third extension section form a complete curve.

9. The bearing according to claim 1, wherein: The extension parts (42) are provided on both side surfaces of the main body (41).

10. The bearing according to claim 9, characterized in that The midpoint of the contour line of the radial outer surface of the main body (41) is P1. On any side, the intersection point of the contour line of the radial outer surface of the main body (41) and the contour line of the radial outer surface of the first extension section (421) is P2. The intersection point of the contour line of the radial outer surface of the first extension section (421) and the contour line of the radial outer surface of the second extension section (422) is P3. The endpoint of the contour line of the radial outer surface of the second extension section (422) away from the main body (41) is P4. The angle formed by the line connecting P2 and P3 and the contour line of the radial outer surface of the main body (41) is smaller than the angle formed by the line connecting P3 and P4 and the contour line of the radial outer surface of the main body (41).

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