Ball bearing retainer and bearing

Abstract

The utility model discloses a rolling shaft bearing retainer and a bearing, and belongs to the technical field of bearing retainers. A ball bearing cage includes: a bottom ring; the top ring and the bottom ring are concentrically arranged, and the side, away from the bottom ring, of the top ring is a plane; the window beams are connected with the bottom ring, and the window beams are evenly distributed in the circumferential direction of the bottom ring at intervals; the upper frame is connected with the window beam to form pockets, and the balls are located in the pockets. The technical problem that an existing ball bearing retainer generates large-amplitude movement in the operation process is solved.

Description

Technical Field

[0001] This utility model relates to the field of bearing cage technology, and in particular to a roller bearing cage and bearing. Background Technology

[0002] Ball bearings have spherical rolling elements, which, compared to other bearings, distribute force more evenly during operation. Therefore, they can withstand greater loads and are suitable for high-load, high-speed applications. In addition, ball bearings have low frictional resistance and high limiting speed, making them widely used in automotive, aerospace, marine, electrical, and textile industries.

[0003] After the ball bearing cage is installed in the bearing, it will inevitably move to a certain extent during the operation of the bearing. If the range of motion is large, it will affect the smoothness of the bearing operation. Therefore, a cage structure is proposed to avoid large range of motion of the current ball bearing cage during operation. Utility Model Content

[0004] The main purpose of this utility model is to provide a ball bearing cage and bearing, which aims to avoid the large-amplitude movement of the current ball bearing cage during operation.

[0005] To achieve the above objectives, the ball bearing cage proposed in this utility model includes:

[0006] Bottom ring;

[0007] A top ring, which is arranged concentrically with the bottom ring, and the side of the top ring facing away from the bottom ring is a plane;

[0008] A window beam, which is connected to the bottom ring, is evenly distributed along the circumference of the bottom ring;

[0009] The upper frame is connected to the window beam to form a pocket, and the ball bearing is located in the pocket.

[0010] Optionally, in one embodiment of the present invention, a limiting part is further included. The limiting part is connected to the inner wall of the top ring. The side of the limiting part away from the bottom ring is a plane, and the plane of the top ring is flush with the plane of the limiting part.

[0011] Optionally, in one embodiment of the present invention, the limiting part is provided with a weight-reducing groove.

[0012] Optionally, in one embodiment of the present invention, the limiting part connects two adjacent window beams.

[0013] Optionally, in one embodiment of the present invention, the two sides of the limiting portion gradually tighten along the inner wall of the top ring towards the core of the top ring.

[0014] Optionally, in one embodiment of the present invention, the planar enclosure of the plurality of limiting portions forms a discontinuous ring structure.

[0015] Optionally, in one embodiment of the present invention, the diameter of the bottom ring is larger than the diameter of the top ring, and the window beam is inclined from the bottom ring to the top ring.

[0016] Optionally, in one embodiment of the present invention, the window beam has ribs that extend a predetermined distance toward the core of the bottom ring and that wrap around the ball bearings.

[0017] Optionally, in one embodiment of the present invention, the upper frame is an arched structure.

[0018] To achieve the above objectives, this utility model also proposes a bearing, comprising:

[0019] Inner circle;

[0020] Outer ring;

[0021] Cover plate;

[0022] The cage is the ball bearing cage described above.

[0023] Compared with existing technologies, this invention achieves at least the following beneficial effects. When assembling the cage, it is fitted onto the inner ring, and rotates synchronously during bearing operation. During rotation, the cage experiences movement offset, which, if significant, affects the smoothness of bearing operation. Therefore, a plane is designed in the top ring to limit the cage's movement offset. After the cage is installed in the bearing, a cover plate is installed on one side of the top ring to seal the lubricating oil inside the bearing. When the cage moves towards the cover plate, the plane of the top ring abuts against the cover plate. This abutment restricts the cage's movement, preventing further movement towards the cover plate, thus solving the technical problem of large-amplitude movement of ball bearing cages during operation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a front view structural schematic diagram of an embodiment of the roller bearing cage of this utility model;

[0026] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0027] Figure 3 This is a side view of the roller bearing cage of this utility model;

[0028] Figure 4 This is a rear view structural diagram of the roller bearing cage of this utility model.

[0029] Explanation of icon numbers:

[0030] 100, Bottom ring; 200, Top ring; 300, Window beam; 310, Pocket; 320, Rib; 400, Top frame; 500, Limiting part; 510, Weight reduction groove; 600, Flat surface;

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. 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 all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0036] Reference Figures 1-4 This utility model proposes a ball bearing cage, comprising:

[0037] Bottom ring 100;

[0038] The top ring 200 is arranged concentrically with the bottom ring 100, and the side of the top ring 200 away from the bottom ring 100 is a plane 600.

[0039] Window beam 300 is connected to bottom ring 100, and window beam 300 is evenly distributed along the circumference of bottom ring 100;

[0040] The upper frame 400 is connected to the window beam 300 to form a pocket 310, and the ball bearing is located in the pocket 310.

[0041] When assembling the cage, it is fitted onto the inner ring. During bearing operation, the cage rotates synchronously, resulting in some movement. If this movement is significant, it shifts the bearing's center of gravity, affecting the smoothness of operation. To address this, a plane 600 is designed on the top ring 200 to limit the cage's movement. After installation, a cover plate is placed on one side of the top ring 200 to seal the lubricating oil inside the bearing. When the cage moves towards the cover plate, the plane 600 of the top ring 200 abuts against it. This contact restricts the cage's movement, preventing further movement towards the cover plate and resolving the technical problem of significant movement in ball bearing cages during operation.

[0042] Specifically, the pocket 310 is formed by the bottom ring 100, the window beam 300, and the upper frame 400. The upper frame 400 has an arched structure to accommodate the shape of the ball bearing and to enclose it. Similarly, the window beam 300 has ribs 320 that extend toward the core of the bottom ring 100 to improve the enclosing effect on the ball bearing.

[0043] Furthermore, the cage is also provided with a limiting part 500. Specifically, the limiting part 500 is connected to the inner wall of the top ring 200. The limiting part 500 also has a plane 600, and the plane 600 of the limiting part 500 is flush with the plane 600 of the top ring 200. When the cage moves along the axial direction of the bearing, the plane 600 of the limiting part 500 and the plane 600 of the top ring 200 simultaneously contact the cover plate, thereby realizing the limiting function of the cover plate on the cage.

[0044] In addition, common materials for cages include metal cages and injection molded cages. Both types of cages require demolding after molding to remove them from the casting mold / injection mold. The plane 600 of the top ring 200 or the plane 600 of the limiting part 500 in this cage can serve as the plane 600 that contacts the ejector pin during demolding, so that the cage can be ejected from the mold in a relatively stable posture during demolding.

[0045] In one embodiment, the limiting part 500 is annular and arranged on the inner wall of the top ring 200. When the cage is mounted on the bearing and rotates, the top ring 200 is the part that bears the centrifugal force of the rolling elements. Therefore, after long-term use and bearing load, the top ring 200 is prone to wear and breakage. The annular limiting part 500 on the inner wall of the top ring 200 can also improve the structural strength of the top ring 200 and prevent it from being damaged after long-term use.

[0046] In another embodiment, the limiting part 500 has a weight-reducing groove 510. After the weight-reducing groove 510 is formed, the limiting part 500 changes from a whole ring structure to multiple independent limiting parts 500, which together form a discontinuous ring structure. The multiple independent limiting parts 500 are evenly distributed inside the top ring 200 and will not affect the stability of the cage during rotation.

[0047] By incorporating the weight-reduction groove 510, the mass of the cage can be reduced while maintaining the limiting effect, achieving weight reduction. During cage rotation, the cage's mass affects its rotational inertia and friction. A lighter mass reduces rotational inertia and friction, thereby reducing energy loss and improving bearing operating efficiency, making it suitable for use in machinery requiring long-term continuous operation. Furthermore, the weight-reduction groove 510 also reduces heat generation during rotation, and the increased cage surface area further enhances heat dissipation.

[0048] Furthermore, each independent limiting part 500 connects to two adjacent window beams 300. As a component of the pocket 310, the window beam 300 rotates by abutting one side of the window beam 300 during the operation of the cage. During contact, the window beam 300 evenly distributes the load of the rolling element. After the limiting part 500 is connected to the window beam 300, it acts as a load-bearing structure to distribute the load borne by the window beam 300. In addition, the size of the pocket 310 is determined based on the volume of the rolling element; that is, the gap between the window beam 300 and the rolling element cannot be too large or too small. After the limiting part 500 is connected to the window beam 300, it improves the resistance of the window beam 300 to deformation and slows down the deformation rate of the window beam 300.

[0049] Specifically, the two sides of the limiting part 500 gradually tighten along the inner wall of the top ring 200 toward the core of the top ring 200, and the limiting part 500 is bent into a hook shape, and a plane 600 is provided at the hook head to limit the cage.

[0050] During rotation, the hook of the limiting part 500 can agitate the lubricating oil inside the bearing. When the bearing is restarted after being stopped for a period of time, the lubricating oil may experience reduced fluidity due to the decrease in operating and ambient temperatures. The agitation of the lubricating oil by the hook during rotation can improve its fluidity, ensuring comprehensive lubrication of the bearing.

[0051] In addition, the hook-shaped limiting part 500 has a groove structure, which can temporarily store a certain amount of lubricating oil and guide the flow of lubricating oil in the groove to a certain extent, causing it to flow towards the interior of the cage. Furthermore, since the limiting part 500 has a structure that gradually tightens towards the core, and the wider part of the limiting part 500 is connected to the inner wall of the top ring 200, the center of gravity of the limiting part 500 is close to the inner wall, making it less prone to deformation or breakage when the limiting part 500 is subjected to force.

[0052] Furthermore, the top ring 200 and the bottom ring 100 have different radii; the bottom ring 100 has a larger radius than the top ring 200. The window beam 300 extends from the bottom ring 100 at a certain angle towards the top ring 200, forming a conical retainer. Compared to retainers with other structures, the conical retainer has a larger surface area, which improves both heat dissipation efficiency and the contact area with lubricating oil, making it easier for the retainer to be fully coated with lubricating oil. In addition, the overall structure of the retainer gradually tightens. During the rotation of the retainer, the frustum affects the lubricating oil, creating a swirling flow from the bottom ring 100 to the top ring 200, guiding the lubricating oil into the interior of the retainer.

[0053] This utility model also proposes a bearing, including a ball bearing cage, inner ring, outer ring, and cover plate as described above. Since the upper frame 400 of the cage protrudes beyond the plane 600 of the top ring 200, when selecting the cover plate, the cover plate avoids the upper frame 400 portion of the cage, while simultaneously being able to abut against the plane 600 of the top ring 200 / limiting portion 500 under certain conditions. Because this bearing employs all the technical solutions of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon further here.

[0054] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A ball bearing cage, characterized in that, include: Bottom ring; A top ring, which is arranged concentrically with the bottom ring, and the side of the top ring facing away from the bottom ring is a plane; A window beam, which is connected to the bottom ring, is evenly distributed along the circumference of the bottom ring; The upper frame is connected to the window beam to form a pocket, and the ball bearing is located in the pocket.

2. The ball bearing cage as described in claim 1, characterized in that, It also includes a limiting part, which is connected to the inner wall of the top ring. The side of the limiting part away from the bottom ring is a plane, and the plane of the top ring is flush with the plane of the limiting part.

3. The ball bearing cage as described in claim 2, characterized in that, The limiting part is provided with a weight reduction groove.

4. The ball bearing cage as described in claim 2, characterized in that, The limiting part connects two adjacent window beams.

5. The ball bearing cage as described in claim 2, characterized in that, The two sides of the limiting part gradually tighten along the inner wall of the top ring towards the core of the top ring.

6. The ball bearing cage as described in claim 2, characterized in that, The planar enclosure of the multiple limiting parts forms a discontinuous ring structure.

7. The ball bearing cage as described in claim 1, characterized in that, The diameter of the bottom ring is larger than the diameter of the top ring, and the window beam is inclined from the bottom ring to the top ring.

8. The ball bearing cage as described in claim 1, characterized in that, The window beam has ribs that extend a predetermined distance toward the core of the bottom ring and wrap around the ball bearings.

9. The ball bearing cage as described in claim 1, characterized in that, The upper frame has an arched structure.

10. A bearing, characterized in that, include: Inner circle; Outer ring; Cover plate; The cage is a ball bearing cage as described in any one of claims 1-9.

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