Bearing rotating structure and bearing

Abstract

The invention relates to the technical field of bearings, in particular to a bearing rotating structure and a bearing. The bearing rotating structure comprises an inner ring, an outer ring and balls; the outer ring sleeves the outer side of the inner ring, and the balls are located between the inner ring and the outer ring; a first rolling groove is formed in the outer wall of the inner ring, a second rolling groove is formed in the inner wall of the outer ring, a supporting part is arranged on the inner wall of the first rolling groove and / or the second rolling groove, the supporting part is arranged in the circumferential direction of the inner ring or the outer ring, and the top end of the supporting part is used for abutting against the balls. According to the bearing rotating structure and the bearing provided by the invention, the supporting parts on the first rolling groove and / or the second rolling groove can further limit the positions of the balls relative to the inner ring and the outer ring, so that the balls are in a tighter mounting state after being assembled, the axial displacement of the bearing can be effectively reduced, the stable operation of the bearing is ensured, and the service life of the bearing is prolonged. And under the condition of small axial displacement, the additional impact and friction on the bearing can be reduced, and the stable bearing capacity of the bearing can be kept.

Description

Technical Field

[0001] The present application relates to the technical field of bearings, and in particular to a bearing rotating structure and a bearing. Background Art

[0002] Bearings are a crucial component in modern machinery. Their primary function is to support rotating parts, reduce friction during movement, and ensure rotational accuracy. Bearings typically consist of an inner ring, an outer ring, and balls. The balls are located between the inner and outer rings. When the inner and outer rings rotate relative to each other, the balls roll, reducing the coefficient of rolling friction.

[0003] However, existing technologies often experience significant axial play due to the shaft to which the bearing is connected and the bearing's design. Excessive axial play can cause the thrust bearing to experience excessive impact and friction, exceeding its load capacity and ultimately leading to abnormal bearing wear or damage. This can also create risks such as vibration, noise, oil leakage, and decreased equipment performance. Summary of the Invention

[0004] In order to solve at least one of the above technical problems existing in the prior art, the present application provides a bearing rotation structure and a bearing.

[0005] On the one hand, the present application provides a bearing rotation structure, including an inner ring, an outer ring and balls; the outer ring is sleeved on the outside of the inner ring, and the balls are located between the inner ring and the outer ring; the outer wall of the inner ring is provided with a first rolling groove, and the inner wall of the outer ring is provided with a second rolling groove, and a support portion is provided on the inner wall of the first rolling groove and / or the second rolling groove, and the support portion is arranged along the circumference of the inner ring or the outer ring, and the top end of the support portion is used to abut against the balls.

[0006] In some embodiments, a plurality of the support portions are respectively provided on the first rolling groove and the second rolling groove; a vertical projection of the support portion on the first rolling groove to the support portion on the second rolling groove coincides with the support portion on the second rolling groove.

[0007] In some embodiments, two support portions are respectively provided on the first rolling groove and the second rolling groove; and the four support portions form a four-point support structure for the ball.

[0008] In some embodiments, the first rolling groove and the second rolling groove include a first arcuate surface and a second arcuate surface; the first arcuate surface and the second arcuate surface are symmetrically arranged with the center line of the inner ring or the outer ring as the center, and the cross-sectional shape of the first arcuate surface and the second arcuate surface is non-circular; the middle part of the first arcuate surface and the second arcuate surface is the fulcrum of the support part, which is used to abut against the ball.

[0009] In some embodiments, the inner ring and / or the outer ring are an integral structure.

[0010] In some embodiments, the area of ​​the ball located in the first rolling groove and the second rolling groove is not less than one quarter of the surface area of ​​the ball.

[0011] In some embodiments, the arc range of the two support portions on the first rolling groove and the arc range of the two support portions on the second rolling groove is 50° to 70°.

[0012] In some embodiments, the inner diameter of the inner ring ranges from 5 mm to 9 mm, and the outer diameter of the outer ring ranges from 11 mm to 15 mm.

[0013] On the other hand, the present application also provides a bearing, including the above-mentioned bearing rotation structure.

[0014] The present application provides a bearing rotation structure and a bearing, in which the balls are located between the inner ring and the outer ring, and are respectively located in the first rolling groove and the second rolling groove, wherein the support portion on the first rolling groove and / or the second rolling groove can further limit the position of the balls relative to the inner ring and the outer ring, so that the balls are in a tighter installation state after assembly, which can effectively reduce the axial movement of the bearing, ensure the stable operation of the bearing, and when the axial movement is small, reduce the additional impact and friction on the bearing, so that the bearing can maintain a stable load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other objects, features and advantages of the exemplary embodiments of the present application will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present application are shown in an illustrative and non-limiting manner, in which: In the drawings, the same or corresponding reference numerals denote the same or corresponding parts.

[0016] Figure 1 A cross-sectional view of a bearing rotation structure provided in an embodiment of the present application; Figure 2 A cross-sectional view of the inner ring and outer ring of the bearing rotation structure provided in an embodiment of the present application; Figure 3 A cross-sectional view of the inner ring of the bearing rotation structure provided in an embodiment of the present application; Figure 4 This is a partial enlarged view of the support portion of the bearing rotation structure provided in an embodiment of the present application.

[0017] In the picture: 10: Inner ring; 20: Outer ring; 30: Ball; 40: Support part; 11: first rolling groove; 21: Second rolling groove: 41: first arcuate surface; 42: second arcuate surface; 43: fulcrum. DETAILED DESCRIPTION

[0018] In order to make the purpose, features, and advantages of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of this application.

[0019] The present invention provides a bearing rotation structure comprising an inner ring, an outer ring, and balls. The balls roll between the inner and outer rings, reducing friction between them during relative rotation. Supports are provided on the inner and / or outer rings to effectively limit and position the balls, making their assembly position relative to the inner and outer rings more stable. This reduces axial movement of the bearing and improves its load-bearing capacity.

[0020] The following describes in detail the various structures of the bearing rotation structure provided in the embodiments of the present application, as well as the positional relationship and connection relationship between the various structures, in conjunction with the accompanying drawings.

[0021] like Figure 1 and Figure 2 As shown, in the embodiment of the present application, the outer ring 20 is sleeved on the outside of the inner ring 10, the balls 30 are located between the inner ring 10 and the outer ring 20, and the outer wall of the inner ring 10 is provided with a first rolling groove 11, and the inner wall of the outer ring 20 is provided with a second rolling groove 21. The connection method between the balls 30 and the inner ring 10 and the outer ring 20 is similar to that of a traditional bearing. When the inner ring 10 or the outer ring 20 rotates, the balls 30 between the inner ring 10 and the outer ring 20 roll to reduce the friction between the two.

[0022] A support portion 40 is provided on the inner wall of the first rolling groove 11 and / or the second rolling groove 21. The support portion 40 is arranged along the circumference of the inner ring 10 or the outer ring 20, and the top of the support portion 40 is used to abut against the ball 30. The support portion 40 is also annular and is arranged along the circumference of the first rolling groove 11 and the second rolling groove 21.

[0023] In the embodiment of the present application, the support portion 40 is not a protruding structure that clearly protrudes from the inner surface of the first rolling groove 11 or the second rolling groove 21. Instead, it may be slightly protruding from the inner surface of the first rolling groove 11 or the second rolling groove 21, thereby forming a fulcrum 43 that contacts the outer wall of the ball 30. Alternatively, it may be a non-circular curved surface structure, with a portion of the curved surface structure contacting the outer wall of the ball 30. Locations on the inner surface of the first rolling groove 11 or the second rolling groove 21 where the support portion 40 is not provided will not create an excessively large gap with the outer surface of the ball 30.

[0024] For example, Figure 4 As shown, the first rolling groove 11 and the second rolling groove 21 include a first arcuate surface 41 and a second arcuate surface 42; the first arcuate surface 41 and the second arcuate surface 42 are symmetrically arranged with the center line of the inner ring 10 or the outer ring 20 as the center, and the cross-sectional shape of the first arcuate surface 41 and the second arcuate surface 42 is non-circular, wherein, Figure 4 Point A in the middle is the connection position of the first arc surface 41 and the second arc surface 42; the middle of the first arc surface 41 and the second arc surface 42 is the fulcrum 43 of the support portion 40, which is used to abut against the ball 30.

[0025] The fulcrum 43 of the support portion 40 abuts the surface of the ball 30, and the gap between the other positions of the first rolling groove 11 or the second rolling groove 21 and the ball 30 is relatively small. In the embodiment of the present application, the first curved surface 41 and the second curved surface 42 are configured as non-cocircular arcs. When a round ball 30 is placed in the first rolling groove 11 or the second rolling groove 21 formed by the first curved surface 41 and the second curved surface 42, the ball 30 will contact the middle of the first curved surface 41 and the second curved surface 42. The position where the first curved surface 41 and the second curved surface 42 contact the ball 30 is the fulcrum 43 of the support portion 40.

[0026] In the embodiment of the present application, a plurality of support portions 40 are respectively provided on the first rolling groove 11 and the second rolling groove 21; Figure 2 In the illustrated perspective, the support portions 40 on the first rolling groove 11 and the support portions 40 on the second rolling groove 21 are symmetrically arranged around the center of the ball 30. Multiple support portions 40 act on the outer surface of the ball 30 at different locations, forming a stable position limit around the ball 30. In this position limit scenario, the ball 30 can rotate smoothly and its movement in other directions is reduced, thereby effectively improving the stability of the position of the ball 30.

[0027] For example, two support parts 40 are respectively provided on the first rolling groove 11 and the second rolling groove 21; the four support parts 40 form a four-point support structure for the ball 30. The four support parts 40 are symmetrically arranged in pairs on the first rolling groove 11 and the second rolling groove 21, and the ball 30 is further limited by the four points, thus realizing a stable four-point support structure. Figure 1As shown in the figure, the intersection of the dotted line “×” on the ball 30 and the first rolling groove 11 and the second rolling groove 21 is the location of the support portion 40.

[0028] In the embodiment of the present application, the cross-sectional shapes of the first rolling groove 11 and the second rolling groove 21 are both arc-shaped grooves with a certain depth. The first rolling groove 11 and the second rolling groove 21 are arranged relative to each other to limit the ball 30. There is a certain contact area between the first rolling groove 11 and the second rolling groove 21 and the ball 30 to ensure that the ball 30 is confined therebetween.

[0029] For example, the area of ​​the ball 30 located in the first rolling groove 11 and the second rolling groove 21 is not less than one quarter of the surface area of ​​the ball 30. Figure 1 and Figure 2 As shown, the first rolling groove 11 and the second rolling groove 21 have the same depth, and from the viewing angle in the figure, the first rolling groove 11 and the second rolling groove 21 cover the arc range of the ball 30 for at least 90°.

[0030] For example, in the embodiment of the present application, the two support portions 40 on the first rolling groove 11 and the two support portions 40 on the second rolling groove 21 have an arc range of 50° to 70°. The two support portions 40 on the first rolling groove 11 and the second rolling groove 21 are symmetrically arranged. Similarly, the two support portions 40 on the same side are symmetrically arranged around the bearing centerline. For example, when the arc range of the two support portions 40 is 60°, the arc distance between the two support portions 40 and the bearing centerline is 30°.

[0031] In the embodiment of the present application, the inner diameter of the inner ring 10 ranges from 5 mm to 9 mm, for example, 7 mm, and the outer diameter of the outer ring 20 ranges from 11 mm to 15 mm, for example, 13 mm. Miniaturizing the bearing's rotating structure can reduce the overall size of the bearing, enabling a wider range of applications.

[0032] Continue to refer Figures 1 to 4 As shown, in the embodiment of the present application, the inner ring 10 and the outer ring 20 are an integrated structure. In traditional bearing structures, due to the large size of the product, in order to facilitate installation, the inner ring 10 needs to be set as a split structure, that is, the inner ring 10 is divided into two symmetrical structures along the axial direction, which needs to be installed on site.

[0033] In this embodiment of the utility model, the inner ring 10 and outer ring 20 are integrally constructed, eliminating the need for on-site assembly and allowing for direct installation. Furthermore, this integral bearing structure reduces manufacturing and maintenance costs, provides better positioning and limiting of the balls 30, and enhances bearing stability.

[0034] The present invention provides a bearing comprising the aforementioned bearing rotation structure. Multiple limiting support points are provided between the inner ring 10 and the outer ring 20 of the bearing, which support and limit the ball 30 in a stable state, such as by adopting a four-point support structure. This makes the bearing more stable during use, and in particular reduces axial play.

[0035] The present application provides a bearing rotation structure and a bearing, in which the ball 30 is located between the inner ring 10 and the outer ring 20, and is respectively located in the first rolling groove 11 and the second rolling groove 21, wherein the support portion 40 on the first rolling groove 11 and / or the second rolling groove 21 can further limit the position of the ball 30 relative to the inner ring 10 and the outer ring 20, so that the ball 30 is in a tighter installation state after assembly, which can effectively reduce the axial movement of the bearing, ensure the stable operation of the bearing, and when the axial movement is small, reduce the additional impact and friction on the bearing, so that the bearing can maintain a stable load-bearing capacity.

[0036] In the description of this specification, the reference terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0038] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A bearing rotation structure, characterized in that: It includes an inner ring (10), an outer ring (20) and a ball (30); The outer ring (20) is sleeved on the outer side of the inner ring (10), and the ball (30) is located between the inner ring (10) and the outer ring (20); The outer wall of the inner ring (10) is provided with a first rolling groove (11), and the inner wall of the outer ring (20) is provided with a second rolling groove (21). A support portion (40) is provided on the inner wall of the first rolling groove (11) and / or the second rolling groove (21). The support portion (40) is arranged along the circumference of the inner ring (10) or the outer ring (20), and the top end of the support portion (40) is used to abut against the ball (30).

2. The bearing rotation structure according to claim 1, characterized in that: A plurality of support portions (40) are respectively provided on the first rolling groove (11) and the second rolling groove (21); A vertical projection of the support portion (40) on the first rolling groove (11) toward the support portion (40) on the second rolling groove (21) coincides with the support portion (40) on the second rolling groove (21).

3. The bearing rotation structure according to claim 2, characterized in that: Two support portions (40) are respectively provided on the first rolling groove (11) and the second rolling groove (21); The four support portions (40) form a four-point support structure for the ball (30).

4. The bearing rotation structure according to claim 1, characterized in that: The first rolling groove (11) and the second rolling groove (21) include a first arcuate surface (41) and a second arcuate surface (42); The first arcuate surface (41) and the second arcuate surface (42) are symmetrically arranged with the center line of the inner ring (10) or the outer ring (20) as the center, and the cross-sectional shape of the first arcuate surface (41) and the second arcuate surface (42) is non-circular; The middle portions of the first arcuate surface (41) and the second arcuate surface (42) serve as the fulcrum (43) of the support portion (40), which is used for abutting against the ball (30).

5. The bearing rotation structure according to claim 3, characterized in that: The inner ring (10) and / or the outer ring (20) are an integral structure.

6. The bearing rotation structure according to claim 1, characterized in that: The area of ​​the ball (30) located in the first rolling groove (11) and the second rolling groove (21) is not less than one quarter of the surface area of ​​the ball (30).

7. The bearing rotation structure according to claim 6, characterized in that: The arc range of the two supporting portions (40) on the first rolling groove (11) and the two supporting portions (40) on the second rolling groove (21) is 50° to 70°.

8. The bearing rotation structure according to claim 1, characterized in that: The inner diameter of the inner ring (10) ranges from 5 mm to 9 mm, and the outer diameter of the outer ring (20) ranges from 11 mm to 15 mm.

9. A bearing, characterized in that: The invention comprises the bearing rotation structure according to any one of claims 1 to 8.

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