Lightweight deep groove ball bearing retainer
By designing a stamped cage with a square curved claw structure that eliminates the need for rivet connections, the problems of high machining difficulty, high friction, and heavy weight of deep groove ball bearing cages in small bearings have been solved. This has resulted in improved lubrication and reduced weight, thereby enhancing the bearing's adaptability and operational performance.
Patent Information
- Application Number
- CN202422756675.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-12
AI Technical Summary
Existing deep groove ball bearing cages are difficult to machine in small bearings, have high friction, are difficult to lubricate, and are relatively heavy, which affects bearing performance and life.
Design a stamped retainer with a square curved claw structure that does not require rivet connection. By opening a lubrication notch at the pocket and a weight reduction notch area on the outside of the connecting plate, a fast connection is achieved and the lubrication effect is improved, while reducing the processing difficulty and weight.
It reduces the manufacturing difficulty of the cage, improves lubrication and compatibility, reduces bearing weight, and enhances bearing performance and lifespan.
Smart Images
Figure CN223498445U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bearing cage technology, specifically relating to a lightweight deep groove ball bearing cage. Background Technology
[0002] For deep groove ball bearings with high rotational speeds, the cage is an indispensable and important component. Its function is to evenly separate the rolling elements, guide the normal operation of the rolling elements, and ensure that the rolling elements do not detach from the bearing. In the existing technology, deep groove ball bearing cages mostly adopt wave-shaped stamped cages and machined solid cages. Both of these cage structures are two-half structures, which are fastened together by rivets.
[0003] Existing deep groove ball bearing cages have the following defects:
[0004] 1. For smaller or narrower deep groove ball bearings, the internal space of the bearing is limited, and the gap between the ball pockets of the cage is too small, so there is not enough space to rivet the rivets, which makes the manufacturing process more difficult.
[0005] 2. The pockets of the existing deep groove ball bearing cages have excessive wrapping around the rolling elements, which not only increases the friction between the rolling elements and the cage, but also makes it difficult for lubricating oil to penetrate between the cage and the rolling elements, which can easily cause the bearing operating temperature to rise and lead to bearing failure.
[0006] 3. The cage itself is quite heavy, which makes the cage itself less adaptable. Utility Model Content
[0007] To address the problems and shortcomings of the existing technology, this utility model provides a lightweight deep groove ball bearing cage. Through cage structure design, a stamped cage with a square curved claw structure that eliminates the need for rivet connections is proposed, reducing the manufacturing difficulty of the cage. Furthermore, a lubrication notch is provided at the pocket to facilitate the flow of lubricating oil. A weight-reduction notch area is provided on the outer side of the connecting plate to reduce the overall weight of the bearing cage and improve its adaptability.
[0008] This utility model is achieved through the following technical solution:
[0009] A lightweight deep groove ball bearing cage is disclosed, comprising a first half-cage and a second half-cage joined together. Multiple guide pockets for rolling elements are evenly distributed along the circumference of both the first and second half-cages, along with connecting plates alternately arranged with the pockets. The outer diameter of the circle containing each connecting plate is smaller than the outer diameter of the circle containing each pocket. A weight-reduction notch is formed on the outer side of each connecting plate, and the difference between the outer diameter of the circle containing each pocket and the outer diameter of the circle containing each connecting plate is the thickness of the weight-reduction notch. Lubrication notches are also provided on both sides of the pockets to facilitate the flow of lubricating oil. A square claw is provided on the outer side of the connecting plate of the first half-cage, extending vertically towards the second half-cage. The top of the connecting plate of the second half-cage has a mounting surface that mates with the square claw. The first and second half-cages are connected as a single unit through the square claw and the mounting surface, achieving a secure connection without rivets. This ensures the cage effectively drives the rolling elements while preventing them from dislodging from the bearing.
[0010] Furthermore, the square bend includes a first bend, an extension, and a second bend. The extension is located between the first bend and the second bend. The first bend is fixed to the outside of the connecting plate, and the second bend can be bent relative to the extension to abut against the assembly surface.
[0011] Furthermore, the thickness of the first bend is the same as the thickness of the connecting plate, which improves the stability between the first bend and the connecting plate.
[0012] Furthermore, a reinforced chamfer is provided at the connection between the first bend and the connecting plate to provide stability between the first bend and the connecting plate.
[0013] Furthermore, the inner diameter of the circle containing each connecting plate is the same as the inner diameter of the circle containing each pocket, which facilitates the installation of rolling elements into the pockets.
[0014] Furthermore, the connecting plate is located on the opening side of the adjacent pocket, and a transition surface is provided between the connecting plate and the pocket to prevent stress concentration between the connecting plate and the pocket.
[0015] Furthermore, an oil passage hole is provided at the middle position of each pocket, and the axis of the oil passage hole of the first half-cage coincides with the axis of the oil passage hole of the second half-cage, thereby improving the lubrication effect of the lubricating oil in the pocket.
[0016] Furthermore, when the first half-cage and the second half-cage are docked, the connecting plate of the first half-cage abuts against the connecting plate of the second half-cage, improving the tightness of the docking between the first half-cage and the second half-cage, thereby enhancing the stability of the entire cage connection.
[0017] Furthermore, the width of the assembly surface is greater than the width of the square claw, so as to facilitate the engagement of the square claw with the assembly surface.
[0018] Furthermore, each lubrication notch is located on the outer side of the first half-cage and the second half-cage, which facilitates the lubricating oil on the outside of the bearing to wet the rolling elements.
[0019] The beneficial effects of this utility model are:
[0020] 1. A stamped cage with a square curved claw structure that does not require rivet connection is proposed, which reduces the manufacturing and processing difficulty of the cage;
[0021] 2. A lubrication notch is made at the pocket to allow lubricating oil to flow into the pocket;
[0022] 3. A weight-reduction notch is made on the outside of the connecting plate to reduce the weight of the entire bearing cage and improve the adaptability of the bearing cage. Attached Figure Description
[0023] Figure 1 A connection diagram illustrating one embodiment of a lightweight deep groove ball bearing cage according to this utility model;
[0024] Figure 2 This is a schematic structural diagram illustrating one embodiment of the first half cage of a lightweight deep groove ball bearing cage according to the present invention.
[0025] Figure 3 A top view illustrating a schematic embodiment of the first half cage of a lightweight deep groove ball bearing cage according to the present invention;
[0026] Figure 4 This is a schematic structural diagram illustrating one embodiment of the second half cage of a lightweight deep groove ball bearing cage according to the present invention.
[0027] Figure 5 A top view illustrating a schematic embodiment of the second half cage of a lightweight deep groove ball bearing cage according to the present invention;
[0028] Figure 6 This is a schematic structural diagram illustrating one embodiment of a lightweight deep groove ball bearing cage according to the present invention.
[0029] Figure 7 Used to explain Figure 6 A magnified view of a portion of point A in the middle.
[0030] List of components and reference numerals:
[0031] 1. First half-cage; 11. Square bent claw; 111. First bend; 112. Extension; 113. Second bend; 114. Reinforced chamfer; 2. Second half-cage; 21. Assembly surface; 3. Pocket; 31. Lubrication notch; 32. Oil passage hole; 4. Connecting plate; 41. Transition surface; 5. Weight reduction notch area. Detailed Implementation
[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0033] It should be noted that the directional terms such as left, right, up, down, front, and back in the embodiments of this utility model are only relative concepts or are based on the normal use state of the product, i.e., the direction of the product's movement, and should not be considered as limiting.
[0034] In addition, it should be noted that the dynamic terms such as "relative motion" mentioned in the embodiments of this utility model not only refer to changes in position, but also include movements such as rotation and rolling in which the position does not change relative to the position, but the state changes.
[0035] Finally, it should be noted that when a component is said to be "located on" or "set on" another component, it can be on the other component or may have an intervening component at the same time. When a component is said to be "connected to" another component, it can be directly connected to the other component or may have an intervening component at the same time.
[0036] like Figures 1 to 7The diagram illustrates a lightweight deep groove ball bearing cage, which is composed of a first half-cage 1 and a second half-cage 2 joined together. Multiple guide pockets 3 for the rolling elements are evenly distributed along the circumference of both the first half-cage 1 and the second half-cage 2, along with connecting plates 4 alternately arranged with the pockets 3. The outer diameter of the circle containing each connecting plate 4 is smaller than the outer diameter of the circle containing each pocket 3. A weight-reducing notch 5 is formed on the outer side of each connecting plate 4. The difference between the outer diameter of the circle containing each pocket 3 and the outer diameter of the circle containing each connecting plate 4 is the thickness of the weight-reducing notch 5. Lubrication notches 31 are also provided on both sides of the pockets 3 to facilitate the flow of lubricating oil into the pockets 3. The outer side of the connecting plate 4 of the first half-cage 1 is provided with a square curved claw 11, which extends vertically toward the second half-cage 2. The top of the connecting plate 4 of the second half-cage 2 is formed with a mounting surface 21 that mates with the square curved claw 11. The first half-cage 1 and the second half-cage 2 are connected as one unit by the square curved claw 11 and the mounting surface 21, and a fastening connection can be achieved without rivets, which satisfies the function of the cage to drive the rolling elements to rotate and ensure that the rolling elements do not fall off the bearing.
[0037] In one embodiment, during assembly, the second half-retainer 2 is first fastened to the top of the first half-retainer 1, causing the connecting plate 4 of the first half-retainer 1 and the second half-retainer 2 to abut against each other, with the pocket 3 of the first half-retainer 1 and the pocket 3 of the second half-retainer 2 engaging with each other. Then, the square curved claw 11 is pressed to engage with the mounting surface 21 of the second half-retainer 2, thereby achieving the docking and fixing of the first half-retainer 1 and the second half-retainer 2.
[0038] In one embodiment, the inner diameter of the circle containing each connecting plate 4 is equal to the inner diameter of the circle containing each pocket 3, and the outer diameter of the circle containing each connecting plate 4 is smaller than the outer diameter of the circle containing each pocket 3. A weight-reducing notch area 5 is formed on the outer side of each connecting plate 4. The difference between the outer diameter of the circle containing each pocket 3 and the outer diameter of the circle containing each connecting plate 4 is the thickness of the weight-reducing notch area 5. By opening the weight-reducing notch area 5 on the outer side of the connecting plate 4, the basic performance of the bearing cage can be guaranteed, and the weight of the entire bearing cage can be reduced.
[0039] In one embodiment, lubrication notches 31 are also provided on both sides of each pocket 3, and the lubrication notches 31 are located in the weight reduction notch area 5, which can reduce the weight of the bearing cage and facilitate the flow of lubricating oil into the pocket 3. It should be noted that the lubrication notches 31 provided on both sides of the pocket 3 are small in size and located at the corners of the pocket 3, so they have virtually no impact on the pocket 3 enclosing the rolling element.
[0040] Preferably, the square bend 11 includes a first bend, an extension 112, and a second bend. The extension 112 is located between the first bend and the second bend. The first bend is fixed to the outside of the connecting plate 4, and the second bend can be bent relative to the extension 112 to abut against the assembly surface 21.
[0041] Preferably, the thickness of the first bend is the same as the thickness of the connecting plate 4, which improves the stability between the first bend and the connecting plate 4.
[0042] Preferably, a reinforcing chamfer 114 is provided at the connection between the first bent portion and the connecting plate 4 to provide stability between the first bent portion and the connecting plate 4.
[0043] In one embodiment, the square bend 11 needs to be compressed to deform it during the assembly of the first half-cage 1 and the second half-cage 2. Since the first bent portion of the square bend 11 is fixed to the connecting plate 4, the connection strength between the first bent portion and the connecting plate 4 requires high strength. By providing a reinforcing chamfer 114 between the bent portion and the connecting plate 4 to act as a connecting rib, the connection strength between the square bend 11 and the connecting plate 4 is improved, preventing breakage at the connection point when the square bend 11 is bent.
[0044] Preferably, the inner diameter of the circle containing each connecting plate 4 is the same as the inner diameter of the circle containing each pocket 3, which facilitates the installation of rolling elements into the pocket 3.
[0045] Preferably, the connecting plate 4 is located on the opening side of the adjacent pocket 3, and a transition surface 41 is provided between the connecting plate 4 and the pocket 3 to prevent stress concentration between the connecting plate 4 and the pocket 3.
[0046] Preferably, an oil passage hole 32 is provided at the middle position of each pocket 3, and the axis of the oil passage hole 32 of the pocket 3 of the first half-cage 1 coincides with the axis of the oil passage hole 32 of the pocket 3 of the second half-cage 2, thereby improving the lubrication effect of the lubricating oil in the pocket 3.
[0047] In one embodiment, an oil passage 32 is provided at the middle position of each pocket 3 to facilitate the diffusion of lubricating oil from the middle position of the pocket 3, thereby improving the lubrication effect between the pocket 3 and the rolling element. Furthermore, the oil passage 32 of the pocket 3 of the first half-cage 1 is aligned with the oil passage 32 of the pocket 3 of the second half-cage 2, which increases the fluidity of the lubricating oil within the bearing cage.
[0048] Preferably, when the first half-cage 1 and the second half-cage 2 are connected, the connecting plate 4 of the first half-cage 1 abuts against the connecting plate 4 of the second half-cage 2, thereby improving the tightness of the connection between the first half-cage 1 and the second half-cage 2 and thus improving the stability of the entire cage connection.
[0049] Preferably, the width of the mounting surface 21 is greater than the width of the square claw 11, so as to facilitate the engagement of the square claw 11 with the mounting surface 21.
[0050] Preferably, each lubrication notch 31 is located on the outer side of the first half-cage 1 and the second half-cage 2, so that the lubricating oil on the outside of the bearing can wet the rolling elements.
[0051] When using the aforementioned lightweight deep groove ball bearing cage, a stamped cage with a square curved claw 11 structure, designed to eliminate the need for rivet connections, is proposed, reducing the manufacturing difficulty of the cage. Furthermore, a lubrication notch 31 is provided at the pocket 3 to facilitate the flow of lubricating oil into the pocket 3. A weight-reduction notch area 5 is provided on the outer side of the connecting plate 4 to reduce the overall weight of the bearing cage and improve its adaptability.
[0052] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.
Claims
1. A lightweight deep groove ball bearing cage, characterized in that, The bearing cage is composed of a first half-cage and a second half-cage joined together. The first half-cage and the second half-cage have a plurality of guide pockets for rolling elements evenly distributed in the circumferential direction, and connecting plates alternately arranged with the pockets. The outer diameter of the circle where each connecting plate is located is smaller than the outer diameter of the circle where each pocket is located. A weight-reducing notch area is formed on the outer side of each connecting plate. The difference between the outer diameter of the circle where each pocket is located and the outer diameter of the circle where each connecting plate is located is the thickness of the weight-reducing notch area. Lubrication notches are also provided on both sides of the pockets. The connecting plate of the first half-cage is provided with a square curved claw on its outer side, the square curved claw extending vertically toward the second half-cage, and the top of the connecting plate of the second half-cage is formed with a mounting surface that mates with the square curved claw. The first half-cage and the second half-cage are connected as one unit through the square curved claw and the mounting surface.
2. The lightweight deep groove ball bearing cage according to claim 1, characterized in that, The square bend includes a first bend, an extension, and a second bend. The extension is located between the first bend and the second bend. The first bend is fixed to the outside of the connecting plate, and the second bend can be bent relative to the extension to abut against the mounting surface.
3. A lightweight deep groove ball bearing cage according to claim 2, characterized in that, The thickness of the first bend is the same as the thickness of the connecting plate.
4. A lightweight deep groove ball bearing cage according to claim 2, characterized in that, The connection between the first bent portion and the connecting plate is provided with a reinforced chamfer.
5. A lightweight deep groove ball bearing cage according to claim 1, characterized in that, The inner diameter of the circle containing each connecting plate is the same as the inner diameter of the circle containing each pocket.
6. A lightweight deep groove ball bearing cage according to claim 1, characterized in that, The connecting plate is located on the opening side adjacent to the pocket, and a transition surface is provided between the connecting plate and the pocket.
7. A lightweight deep groove ball bearing cage according to claim 1, characterized in that, An oil passage is provided at the middle position of each of the pockets, and the axis of the oil passage of the first half-cage pocket coincides with the axis of the oil passage of the second half-cage pocket.
8. A lightweight deep groove ball bearing cage according to claim 1, characterized in that, When the first half-cage and the second half-cage are docked, the connecting plate of the first half-cage abuts against the connecting plate of the second half-cage.
9. A lightweight deep groove ball bearing cage according to claim 1, characterized in that, The width of the assembly surface is greater than the width of the square curved claw.
10. A lightweight deep groove ball bearing cage according to claim 1, characterized in that, Each of the aforementioned lubrication notches is located on the outer side of the first half-cage and the second half-cage.