Deep groove ball bearing retainer and deep groove ball bearing
By setting up a pressurized diversion groove on the inner wall of the ball chamber of the deep groove ball bearing cage, the friction and heat problems in the deep groove ball bearing are solved, and the effects of reducing friction, reducing temperature rise and extending life are achieved.
Patent Information
- Application Number
- CN202422660360.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-11-01
AI Technical Summary
When the deep groove ball bearing is complex in load and rotates at high speed, there is a large sliding friction and rolling friction between the cage and the rolling element, generating a large amount of heat, resulting in cage failures such as burns and fractures.
The pressurized flow guide groove is provided on the inner wall of the ball chamber of the deep groove ball bearing cage. The pressurized flow guide groove deviates from the reference center surface, and the two ends extend to the outer edge and inner edge of the annular frame body respectively. The width gradually decreases, defining the rolling trajectory of the rolling element, allowing the air flow and lubricating oil to flow in the flow guide groove, generating a squeeze pressure to reduce friction and form a circulating flow of lubricating oil.
It greatly reduces the friction between the rolling element and the inner wall of the ball cavity, reduces temperature rise, extends service life, increases the speed of the rolling element, and improves the lubrication effect.
Smart Images
Figure CN223203501U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of bearings, and in particular to a deep groove ball bearing retainer and a deep groove ball bearing. Background Art
[0002] The bearing cage is a crucial component of a bearing, partially enclosing all rolling elements to isolate them, guide their rolling motion, and retain them between the bearing's inner and outer rings. There are many types and structures of bearing cages, but the deep groove ball bearing cage is the most common and is used in deep groove ball bearings, whose rolling elements are generally spherical.
[0003] During operation, deep groove ball bearings, especially those operating under complex loads and high-speed rotation, are subject to significant centrifugal force, shock, and vibration in their cages. This creates significant sliding and rolling friction between the cage and rolling elements, generating significant heat. The combined effects of these forces and heat can easily lead to cage failure, and in severe cases, burns and fractures. Utility Model Content
[0004] The present application provides a deep groove ball bearing retainer and a deep groove ball bearing. The deep groove ball bearing retainer can effectively improve or solve the technical problems of large sliding friction and rolling friction between the retainer and the rolling elements during the operation of the existing deep groove ball bearing, and generate a large amount of heat, which can easily lead to retainer failure or even burning and breakage.
[0005] The technical solutions adopted in this application are:
[0006] A deep groove ball bearing retainer comprises a pair of annular frames connected symmetrically, each of the annular frames comprising a ball pocket portion and a connecting portion alternately arranged along its circumference, the ball pocket portion being provided with a ball pocket cavity, the ball pocket cavities of the pair of annular frames cooperating to form a pocket hole for mounting a rolling body, the inner wall of the ball pocket cavity being provided with a pressurization guide groove, the ball pocket portion having a reference center plane located in the radial direction of the annular frame, the pressurization guide groove deviating from the reference center plane, the two ends of the pressurization guide groove respectively extending to the outer edge and inner edge of the annular frame, and the width of the pressurization guide groove being arranged to gradually decrease from one end to the other end.
[0007] The deep groove ball bearing cage provided in this application also includes the following additional technical features:
[0008] The inner wall of the ball pocket cavity is provided with a plurality of pressurized guide grooves.
[0009] The boost guide groove includes a first boost guide groove and a second boost guide groove respectively located on both sides of the reference center plane, the first end of the first boost guide groove extends to the outer edge of the annular frame, the second end of the first boost guide groove extends to the inner edge of the annular frame, the first end of the second boost guide groove extends to the outer edge of the annular frame, and the second end of the second boost guide groove extends to the inner edge of the annular frame, the width of the first boost guide groove is set to gradually decrease from the first end to the second end, and the width of the second boost guide groove is set to gradually increase from the first end to the second end.
[0010] The first boost guide groove and the second boost guide groove are centrally symmetrically arranged.
[0011] The pair of annular frames are detachably connected via the connecting portion.
[0012] The connecting portion is provided with a rivet hole, and the connecting portions of the pair of annular frames are detachably connected by rivets passing through the rivet holes.
[0013] At least one end of the rivet hole is provided with a rounded corner.
[0014] A deep groove ball bearing comprises the deep groove ball bearing retainer as described above.
[0015] Due to the adoption of the above technical scheme, the technical effects achieved by the present application include at least: the deep groove ball bearing retainer of the present application is provided with a boost guide groove on the inner wall of the ball pocket cavity, the boost guide groove deviates from the reference center plane of the ball pocket portion, the two ends of the boost guide groove extend to the outer edge and the inner edge of the annular frame body respectively, and the width of the boost guide groove is set to gradually decrease from one end to the other end. By limiting the position and structure of the boost guide groove as above, the extension trajectory of the boost guide groove tends to the rolling trajectory of the rolling body in the pocket during the operation of the deep groove ball bearing. Therefore, by limiting the operating direction of the deep groove ball bearing, the rolling body in the pocket can be During the rolling process in the hole, the airflow and the lubricating oil filled in the pocket can be driven to enter from the wider end of the boost guide groove. As the airflow and lubricating oil flow toward the narrower end of the boost guide groove, the airflow and hydraulic oil are gradually squeezed out of the boost guide groove, which in turn generates an extrusion force on the rolling element, causing the rolling element to have a floating effect away from the inner wall of the ball pocket cavity. In this working state, the friction between the rolling element and the inner wall of the ball pocket cavity is greatly reduced, thereby reducing the heat generated and the temperature rise during the operation of the deep groove ball bearing. The reduction in internal losses helps to improve the service life and also helps to increase the speed of the rolling element. Moreover, during the rolling process of the rolling element, the lubricating oil can form a circulating flow state in the pocket with the help of the boost guide groove, which helps to better lubricate the rolling element. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0017] Figure 1 An exploded view of a deep groove ball bearing cage provided in an embodiment of the present application;
[0018] Figure 2 An axonometric view of the annular frame provided in an embodiment of the present application;
[0019] Figure 3 for Figure 2 Enlarged view of part A in the middle;
[0020] Figure 4 for Figure 2 Enlarged view of middle part B;
[0021] Figure 5 A front view of the annular frame provided in an embodiment of the present application;
[0022] Figure 6 This is a structural schematic diagram of the annular frame and rolling elements provided in an embodiment of the present application, which shows the rolling direction of the rolling elements in the pockets.
[0023] List of parts and reference numerals:
[0024] 1 annular frame, 11 ball pocket portion, 12 connecting portion, 13 pressurized guide groove, 131 first pressurized guide groove, 132 second pressurized guide groove, 14 outer edge, 15 inner edge, 16 rivet hole, 17 rounded corner;
[0025] 2 Reference center plane;
[0026] 3 rolling elements. DETAILED DESCRIPTION
[0027] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.
[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.
[0029] In addition, in the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "lateral", "longitudinal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0030] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.
[0031] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present application. Throughout this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0032] In the embodiments of this application, a deep groove ball bearing retainer and a deep groove ball bearing are provided. For ease of explanation and understanding, the following content provided in this application is based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is merely a specific example and schematic illustration and does not constitute a specific limitation of the technical solution provided in this application.
[0033] like Figures 1 to 6 As shown, the present application provides a deep groove ball bearing retainer, comprising a pair of annular frames 1 connected symmetrically, each of the annular frames 1 comprising a ball pocket portion 11 and a connecting portion 12 alternately arranged along its circumference, the ball pocket portion 11 being provided with a ball pocket cavity, the ball pocket cavities of the pair of annular frames 1 cooperating to form a pocket hole for mounting a rolling element, the inner wall of the ball pocket cavity being provided with a pressurization guide groove 13, the ball pocket portion 11 having a reference center plane 2 located in the radial direction of the annular frame 1, the pressurization guide groove 13 deviating from the reference center plane 2, and the two ends of the pressurization guide groove 13 extending to the outer edge 14 and inner edge 15 of the annular frame 1, respectively. Figure 5 As shown, the reference center plane 2 is schematically indicated by a dotted line.
[0034] The deep groove ball bearing retainer of the present application is provided with a pressurized guide groove 13 on the inner wall of the ball pocket cavity. The pressurized guide groove 13 deviates from the reference center plane 2 of the ball pocket portion 11. The two ends of the pressurized guide groove 13 extend to the outer edge 14 and the inner edge 15 of the annular frame body 1 respectively. The width of the pressurized guide groove 13 is set to gradually decrease from one end to the other end. By defining the position and structure of the pressurized guide groove 13 as above, the extension trajectory of the pressurized guide groove 13 tends to the rolling trajectory of the rolling element in the pocket during the operation of the deep groove ball bearing. Therefore, by limiting the operating direction of the deep groove ball bearing, the rolling element rolls in the pocket. When the airflow and the lubricating oil filled in the pocket enter from the wider end of the boost guide groove 13, as the airflow and lubricating oil flow toward the narrower end of the boost guide groove 13, the airflow and hydraulic oil are gradually squeezed out of the boost guide groove 13, thereby generating a squeezing force on the rolling element, causing the rolling element to have a floating effect away from the inner wall of the ball pocket cavity. In this working state, the friction between the rolling element and the inner wall of the ball pocket cavity is greatly reduced, thereby reducing the heat generated by friction and reducing the temperature rise during the operation of the deep groove ball bearing. The reduction in internal losses helps to improve the service life and also helps to increase the speed of the rolling element. Moreover, during the rolling process of the rolling element, the lubricating oil can form a circulating flow state in the pocket with the help of the boost guide groove 13, which helps to better lubricate the rolling element.
[0035] As a preferred embodiment of the present application, Figure 2 and Figure 3 As shown, the inner wall of the ball pocket cavity is provided with a plurality of the boost guide grooves 13. By providing a plurality of boost guide grooves 13, during the operation of the deep groove ball bearing, the airflow and lubricating oil entering the plurality of boost guide grooves 13 can be used to float the rolling elements, thereby increasing the floating distance of the rolling elements and further improving the effect of reducing friction and heat.
[0036] More preferably, Figure 3 and Figure 6As shown, the boost guide groove 13 includes a first boost guide groove 131 and a second boost guide groove 132 located on both sides of the reference center plane 2, wherein the first end of the first boost guide groove 131 extends to the outer edge 14 of the annular frame 1, and the second end of the first boost guide groove 131 extends to the inner edge 15 of the annular frame 1. The first end of the second boost guide groove 132 extends to the outer edge 14 of the annular frame 1, and the second end of the second boost guide groove 132 extends to the inner edge 15 of the annular frame 1. The width of the first boost guide groove 131 is set to gradually decrease from the first end to the second end, and the width of the second boost guide groove 132 is set to gradually increase from the first end to the second end. It can be understood by those skilled in the art that after the running direction of the deep groove ball bearing is defined, as shown in FIG. Figure 6 As shown, the dotted line schematically represents the rolling body 3 and the arrow schematically represents the rolling direction of the rolling body 3. During the rolling process of the rolling body in the pocket along the limited direction, it can drive the airflow and the lubricating oil filled in the pocket to enter from the wider first end of the first boost guide groove 131, and the airflow and lubricating oil flow toward the narrower second end of the first boost guide groove 131, thereby causing the rolling body to have a floating effect. On the other side of the reference center plane 2, the airflow and lubricating oil will also enter from the wider second end of the second boost guide groove 132, and then flow toward the narrower first end of the second boost guide groove 132, thereby also causing the rolling body to have a floating effect. Therefore, both sides of the reference center plane 2 can achieve the effect of making the rolling body float, greatly reducing the friction between the rolling body and the inner wall of the pocket cavity and the heat generated by friction.
[0037] Furthermore, the first boost guide groove 131 and the second boost guide groove 132 are centrally symmetrically arranged, which helps to stabilize and smooth the flow of airflow and lubricating oil in the pocket, reduce turbulence, and further help to improve the floating effect of the rolling body.
[0038] As a preferred embodiment of the present application, the pair of annular frames 1 are detachably connected via the connecting portion 12 to facilitate maintenance or replacement of damaged components, thereby reducing scrapping costs.
[0039] Regarding the detachable connection mode of the connecting portion 12 of a pair of annular frames 1, in a preferred embodiment, as Figure 1 、 Figure 2 and Figure 4 As shown, the connecting portion 12 is provided with a rivet hole 16, and the connecting portion 12 of the pair of annular frames 1 is detachably connected by rivets passing through the rivet hole 16, thereby improving the convenience of disassembly and assembly. In other embodiments, the connecting portion 12 of the pair of annular frames 1 can also be connected by bolts or other suitable connection methods.
[0040] Further, if Figure 4 As shown, at least one end of the rivet hole 16 is provided with a rounded corner 17. It will be understood by those skilled in the art that if the sharp corners of the ends of the rivet holes 16 are not processed during the production and processing of the annular frame 1, burrs are likely to fall off after assembly, resulting in poor bearing cleanliness and adversely affecting the operation of the bearing. Therefore, by providing the ends of the rivet holes 16 with rounded corners 17, the smoothness of the ends of the rivet holes 16 is improved, burrs are removed, and the cleanliness of the bearing is improved.
[0041] The present application provides a deep groove ball bearing, comprising the deep groove ball bearing retainer as described above, wherein the deep groove ball bearing retainer is installed between the inner ring and the outer ring of the deep groove ball bearing, and the rolling elements of the deep groove ball bearing are arranged in the pockets of the deep groove ball bearing retainer.
[0042] It should be noted that, since the deep groove ball bearing provided in this application includes the deep groove ball bearing retainer in any of the above-mentioned embodiments, the beneficial effects of the deep groove ball bearing retainer are all included in the deep groove ball bearing provided in this application and will not be elaborated here.
[0043] Anything not described in this application can be achieved by adopting or drawing on existing technologies.
[0044] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.
[0045] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.
Claims
1. A deep groove ball bearing cage, characterized in that: It includes a pair of annular frames connected symmetrically, each of the annular frames includes a ball pocket portion and a connecting portion alternately arranged along its circumference, the ball pocket portion is provided with a ball pocket cavity, the ball pocket cavities of the pair of annular frames cooperate to form a pocket hole for mounting a rolling body, the inner wall of the ball pocket cavity is provided with a boost guide groove, the ball pocket portion has a reference center plane located in the radial direction of the annular frame, the boost guide groove deviates from the reference center plane, the two ends of the boost guide groove extend to the outer edge and the inner edge of the annular frame respectively, and the width of the boost guide groove is set to gradually decrease from one end to the other end.
2. The deep groove ball bearing retainer according to claim 1, characterized in that: The inner wall of the ball pocket cavity is provided with a plurality of pressurized guide grooves.
3. The deep groove ball bearing retainer according to claim 2, characterized in that: The boost guide groove includes a first boost guide groove and a second boost guide groove respectively located on both sides of the reference center plane, the first end of the first boost guide groove extends to the outer edge of the annular frame, the second end of the first boost guide groove extends to the inner edge of the annular frame, the first end of the second boost guide groove extends to the outer edge of the annular frame, and the second end of the second boost guide groove extends to the inner edge of the annular frame, the width of the first boost guide groove is set to gradually decrease from the first end to the second end, and the width of the second boost guide groove is set to gradually increase from the first end to the second end.
4. The deep groove ball bearing retainer according to claim 3, characterized in that: The first boost guide groove and the second boost guide groove are centrally symmetrically arranged.
5. The deep groove ball bearing retainer according to claim 1, characterized in that: The pair of annular frames are detachably connected via the connecting portion.
6. The deep groove ball bearing retainer according to claim 5, characterized in that: The connecting portion is provided with a rivet hole, and the connecting portions of the pair of annular frames are detachably connected by rivets passing through the rivet holes.
7. The deep groove ball bearing retainer according to claim 6, characterized in that: At least one end of the rivet hole is provided with a rounded corner.
8. A deep groove ball bearing, characterized in that: The invention comprises a deep groove ball bearing retainer according to any one of claims 1 to 7.