Retainer of flexible thin-wall bearing
By designing cylindrical pockets and locking structures on flexible thin-wall bearing cages, the poor lubrication problems caused by the singular number of steel balls and the uneven distribution of ball pockets in flexible bearings are solved, and good lubrication and cages of bearings are achieved. stability.
Patent Information
- Application Number
- CN202420584865.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-25
AI Technical Summary
Due to the limitations of traditional cage structure, flexible bearings have mostly singular steel balls, and the ball pockets are unevenly distributed, resulting in the internal grease of the bearing and the problem of poor lubrication.
Design a cage with flexible thin-wall bearings, adopting cylindrical pockets and locking port structures. The side walls of the cylindrical pockets are arc surfaces, and the locking ports are smoothly connected to the side walls, and the locking port size and position are evenly distributed to prevent The cage falls off and provides good lubrication.
Effectively prevent the cage from falling off during bearing operation, ensure lubricating performance, avoid oil leaning, and prevent rolling elements from impacting the frame body from breaking.
Smart Images
Figure CN222185493U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearings, in particular to a retaining frame of a flexible thin-walled bearing. Background Art
[0002] Flexible bearings are different from general deep groove ball bearings. They can accommodate more rolling elements through special assembly methods. However, due to the influence of the traditional structure of the cage, the maximum number of pockets on the cage is limited. In actual application, due to structural reasons, the number of steel balls in flexible bearings is mostly odd, and the ball pockets are unevenly distributed on the circumference of the cage. Under working conditions, the unevenly distributed pockets will squeeze out the grease inside the bearing, causing oil starvation inside the bearing and resulting in poor bearing lubrication.
[0003] Chinese patent CN205503773U discloses a flexible bearing retainer, including a retainer body, on which pockets without a lock and pockets with a lock are provided, the number of the pockets with a lock is 3 to 5 and they are evenly distributed between the pockets without a lock, the sides of the pockets with a lock are provided with grooves, and the pockets without a lock and the pockets with a lock are both spherical pockets; the above-mentioned pockets are spherical pockets and are divided into those with a lock and those without a lock, and the spherical pockets without a lock are easy to cause the retainer and the rolling element to fall off axially during the operation of the bearing, and cannot provide good lubrication during the operation of the bearing, resulting in oil starvation. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a retaining frame which can not only prevent the retaining frame from axially falling off but also provide good lubrication performance when the flexible bearing is running.
[0005] The technical solution adopted by the utility model to solve the above technical problems is: a retaining frame of a flexible thin-walled bearing, including a frame body, a pocket and a locking opening on the pocket; the pocket is a cylindrical pocket, and the locking opening corresponding to the number of rolling elements is evenly distributed on the cylindrical pocket.
[0006] Furthermore, the locking opening is smoothly connected to the rounded corners of the side walls of the cylindrical pocket.
[0007] Furthermore, the side wall of the cylindrical pocket is an arc surface, and the size of the arc surface is 1.1 to 1.2 times the diameter of the rolling body.
[0008] Furthermore, the size between the locking openings is 0.85 to 0.95 times the diameter of the rolling body, and the axial length of the locking opening is 0.15 to 0.25 times the axial length of the cylindrical pocket.
[0009] Compared with the prior art, the advantage of the utility model is that the pocket is designed as a cylindrical pocket. Compared with the spherical pocket, the cylindrical pocket provides a larger space and is evenly distributed on the circumference of the retaining frame. It can provide good lubrication performance during the operation of the bearing and prevent the occurrence of oil starvation. There are also evenly distributed locking holes on the cylindrical pocket, which can prevent the retaining frame from axially falling off during the operation of the bearing, and the locking holes have chamfered corners, which is convenient for installing the rolling body in the cylindrical pocket. At the same time, the locking hole is smoothly connected to the rounded corners of the side walls of the cylindrical pocket, which is used to prevent the rolling body from hitting the frame and causing the frame to break when the bearing is working. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0011] Explanation of numbers: 1-frame, 2-cylindrical pocket, 3-locking mouth, 4-arc surface, 5-rolling element, A-locking mouth diameter, B-cylindrical pocket diameter, C-locking mouth axial length, D-cylindrical pocket axial length. DETAILED DESCRIPTION
[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0013] As a preferred embodiment of the present invention, Figure 1 As shown, a retaining frame of a flexible thin-walled bearing includes a frame body 1, a cylindrical pocket 2, and a locking mouth 3 evenly distributed on the cylindrical pocket 2 according to the number of rolling elements 5, the cylindrical pocket 2 is evenly distributed on the circumference of the frame body 1 and the side wall of the cylindrical pocket 2 is an arc surface 4; the locking mouth diameter A is 0.85 to 0.95 times the diameter of the rolling element 5, the locking mouth axial length C is 0.15 to 0.25 times the axial length D of the cylindrical pocket and the diameter of the arc surface 4 is 1.1 to 1.2 times the diameter of the rolling element 5.
[0014] The cylindrical pocket 2 provides a larger space than the spherical pocket, and each cylindrical pocket 2 has the same structure, which can provide good lubrication performance for the bearing during operation; the locking mouth 3 can prevent the retaining frame from axially falling off during the operation of the bearing, and the locking mouth 3 has a chamfered corner 6, which is convenient for installing and removing the rolling body 5 in the cylindrical pocket 2. At the same time, the locking mouth 3 is smoothly connected to the side wall radius of the cylindrical pocket 2 to prevent the rolling body 5 from hitting the retaining frame and breaking when the bearing is running.
[0015] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.
Claims
1. A flexible thin-walled bearing retainer, comprising a retainer body (1), a pocket hole and a locking hole (3) on the pocket hole; characterized in that: The pockets are cylindrical pockets (2), and the locking openings (3) corresponding to the number of rolling bodies (5) are evenly distributed on the cylindrical pockets (2).
2. A flexible thin-walled bearing retainer as claimed in claim 1, characterized in that: The locking opening (3) has a rounded corner (6) which is smoothly connected to the rounded corner of the side wall of the cylindrical pocket (2).
3. A holder for a flexible thin-walled bearing as claimed in claim 2, characterized in that: The side wall of the cylindrical pocket (2) is a circular arc surface (4), and the size of the circular arc surface (4) is 1.1 to 1.2 times the diameter of the rolling body (5).
4. A holder for a flexible thin-walled bearing as claimed in claim 3, characterized in that: The size between the locking openings (3) is 0.85 to 0.95 times the diameter of the rolling body (5), and the axial length of the locking openings (3) is 0.15 to 0.25 times the axial length of the cylindrical pocket (2).