Holder with struts

Abstract

A retainer with a supporting column comprises a first frame body, a second frame body and a fixing piece, a plurality of wrapping frames and fixing frames which are evenly distributed and arranged in the circumferential direction are arranged on the corresponding end faces of the first frame body and the second frame body, and rolling holes for balls to rotate inside are formed between every two corresponding wrapping frames. Fixing holes capable of being spliced are formed in every two corresponding fixing frames, the fixing pieces are arranged in the fixing holes in a penetrating mode and used for fixing the first frame body and the second frame body, and the two ends of each fixing piece are provided with fixing parts respectively, and the fixing parts are in expansion fit with the surfaces of the sides, away from the rolling holes, of the fixing holes. The fixing piece is provided with oil blocking faces corresponding to the rolling holes in the two sides, and splashing spaces are formed between the oil blocking faces and the rolling holes. The retainer has the beneficial effects that the clamping structure avoids the problem that the miniature retainer is possibly damaged in the riveting process, and the durability and the reliability of the retainer are enhanced.

Description

Technical Field

[0001] The utility model relates to a bearing retainer, in particular to a retainer with pillars. Background Art

[0002] Bearing retainers secured by staking are a traditional method that involves placing the retainer at the predetermined location within the bearing and ensuring alignment with the inner and outer rings. Prior to staking, the retainer's rivet points are pre-drilled or machined to allow the rivet to pass through and secure the retainer. Using a staking tool, such as a riveting gun or press, the rivet is inserted through the retainer and bearing's rivet points. The rivet is then deformed into a rivet head, securely securing the retainer. The advantages of staking are its simplicity, low cost, and ease of maintenance and replacement. While staking can create stress concentrations in the retainer and may not be as stable as welding or adhesive bonding in high-load or high-speed applications, it is suitable for bearings in low- to medium-load and medium-speed applications. Staking is an economical and easy-to-implement solution for bearing applications that do not require extreme performance.

[0003] However, with increasing demands for bearing load capacity and product integration, and the need to accommodate more rolling elements within shrinking spaces, conventional riveted wave-shaped cages are becoming insufficient. Specifically, as bearing space shrinks, the size of the rolling elements and cage also shrinks. However, the riveting process causes irreversible damage to the cage during this shrinking process, making it unsuitable for today's market demands. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a retaining frame with pillars that can adapt to miniaturized bearings.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a retaining frame with a support, comprising a first frame body, a second frame body and a fixing member, the corresponding end faces of the first frame body and the second frame body are provided with a plurality of wrapping frames and fixing frames evenly distributed along the circumferential direction, rolling holes for the balls to run inside are formed between the two corresponding wrapping frames, and spliced ​​fixing holes are provided on the two corresponding fixing frames, the fixing members are passed through the fixing holes to fix the first frame body and the second frame, and the two ends of the fixing members are respectively provided with fixing parts that form an expansion fit between the surface of the side of the fixing hole opposite to the rolling hole, and the rolling holes on both sides of the fixing member are respectively provided with oil baffle surfaces, and a splashing space is formed between the oil baffle surface and the rolling hole.

[0006] The beneficial effects of the present invention are as follows: the technical solution of the retaining frame with struts adopting a clip-on structure has significant beneficial effects compared with the traditional riveting fixing method. First, the clip-on structure avoids the problem of breakage that may occur in the miniaturized retaining frame during the riveting process, thereby enhancing the durability and reliability of the retaining frame. Secondly, the clip-on structure simplifies the assembly process, reduces the risk of deformation or damage to the retaining frame due to improper riveting, and improves production efficiency and assembly quality. In addition, the expansion fit formed by the fixing parts at both ends of the fixing piece and the fixing hole enhances the connection stability between the first frame and the second frame, and the splash space design between the oil baffle surface and the rolling hole effectively blocks the splashing of lubricating oil, keeps the lubricating oil always in the rolling hole to provide lubrication for the rolling element, and extends the service life of the bearing. Overall, this improvement not only adapts to the trend of miniaturization of bearings, but also improves the performance of the retaining frame and the overall reliability of the bearing.

[0007] Furthermore, the oil-blocking surface is an arc-shaped surface, and is provided with a plurality of oil storage holes communicating with the rolling holes on both sides of the fixing member.

[0008] The design of an arc-shaped oil baffle and a connecting oil storage hole has brought about the following beneficial effects: First, the arc-shaped oil baffle can effectively block the splashing of lubricating oil and protect the inside of the bearing from contamination, thereby reducing wear and failure caused by splashing of lubricating oil. Secondly, the oil storage holes provided on the oil baffle can connect with the rolling holes on both sides of the fixing part, which helps to balance the distribution of lubricating oil in each rolling hole, ensure the uniform supply of lubricating oil, reduce bearing wear caused by oil pressure imbalance, and extend the service life of the bearing. In addition, this design also simplifies the structure of the lubrication system, reduces maintenance costs and complexity, and improves the reliability and efficiency of the entire bearing system. In summary, this improvement not only improves the performance of the retaining frame, but also enhances the stability and durability of the entire bearing system.

[0009] Furthermore, the cross-sectional length of the fixing hole is consistent with the cross-sectional length of the fixing portion. After the fixing portion passes through the fixing hole, it is rotated 90° to the fixing position, and an expansion fit is formed between the fixing portion and the surface of the fixing position.

[0010] The technical solution of a retainer with struts that adopts a rotational fixing method has the following significant beneficial effects: First, the design of rotating the fixing part 90° to the fixed position simplifies the installation process, making the assembly of the fixing part more convenient and quick, and reducing the assembly time and labor intensity. Secondly, the consistency of the cross-sectional length of the fixing part and the fixing hole ensures that the fixing part can pass through the fixing hole, avoiding installation difficulties or damage caused by size mismatch. Furthermore, the expansion fit between the fixing part and the surface of the fixed position not only enhances the stability of the structure, but also improves the resistance of the retainer to impact and vibration, thereby improving the reliability and durability of the entire bearing system. In addition, this fixing method also helps to reduce deformation or damage of the retainer caused by improper fixing, thereby extending the service life of the retainer. In summary, this improvement not only improves the assembly efficiency, but also enhances the structural strength of the retainer and the overall performance of the bearing system.

[0011] Furthermore, during the movement of the fixing portion from the fixing hole position toward the fixed position, the clearance fit between the fixing portion and the surface of the fixing hole facing away from the rolling hole gradually changes to an interference fit.

[0012] In this technical solution, when the fixing part moves from the fixing hole position to the fixed position, the fitting relationship between the fixing part and the surface of the fixing hole facing away from the rolling hole gradually changes from a clearance fit to an interference fit. This design brings the following beneficial effects: First, this gradual fitting change makes the rotation of the fixing part smoother, reduces the resistance that may be encountered during the rotation process, and thus simplifies the assembly process. Secondly, by adjusting the expansion and tightening relationship by touch, the operator can more intuitively perceive the installation status of the fixing part, ensure that the fixing part is correctly and firmly installed in place, and improve the accuracy and reliability of the assembly. In addition, this fitting method also helps to achieve a tighter fixing effect, enhances the structural stability of the cage, and reduces the risk of loosening due to vibration or impact, thereby improving the performance and life of the bearing under various working conditions. In summary, this improvement not only improves the convenience and accuracy of assembly, but also enhances the stability of the cage and the durability of the bearing system.

[0013] Furthermore, limiting grooves are respectively provided at both ends of the fixed position, and tension springs that can cooperate with the limiting grooves are respectively provided at the two ends of the fixed part corresponding to the two limiting grooves. The tension springs cause the fixed part to have a tendency to move toward the surface of the fixing hole away from the rolling hole.

[0014] In this technical solution, by providing limit grooves at both ends of the fixed position and providing tension springs at the positions of the limit grooves at both ends of the fixed part, stable fixation of the fixing part and enhanced connection stability are achieved. First, the design of the tension spring effectively prevents the fixing part from loosening due to vibration or impact during use, ensuring the long-term stability and reliability of the retaining frame. Secondly, the continuous tension generated by the tension spring enables the fixing part to always maintain a close fit with the first frame and the second frame. This preload force helps to improve the rigidity and load-bearing capacity of the entire bearing system. In addition, this design also allows the preload force to be adjusted without disassembly to adapt to different working conditions and load requirements, providing higher flexibility and adaptability. In summary, this improvement not only improves the stability of the retaining frame and the reliability of the bearing system, but also enhances the adaptability of the system and the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an axonometric diagram of an embodiment of the present utility model;

[0016] Figure 2 This is an axonometric view of a fixing member according to an embodiment of the present invention (an embodiment without a tension spring);

[0017] Figure 3 This is a partial enlarged view of the fixing hole of the embodiment of the utility model;

[0018] Figure 4 This is a cross-sectional view of the fixing member of an embodiment of the present utility model in a fixed position (an embodiment with a tension spring). DETAILED DESCRIPTION

[0019] The utility model embodiment of a support frame with a support Figure 1-4 As shown: it includes a first frame 1, a second frame 2 and a fixing member 5 for fixing the above two. The corresponding end surfaces of the first frame 1 and the second frame 2 are provided with a plurality of parcel frames 3 and fixing frames 4 evenly distributed along the circumferential direction. Rolling holes 31 for balls (not shown in the figure) to run inside are formed between the corresponding parcel frames 3. The fixing member 5 is respectively provided with arc-shaped oil-blocking surfaces 51 corresponding to the rolling holes 31 on both sides, and a splashing space 32 is formed between the oil-blocking surface 51 and the rolling hole 31.

[0020] The fixing frames 4 corresponding to each other are provided with spliced ​​fixing holes 41, and the two ends of the fixing parts 5 are respectively provided with fixing parts 52. The cross-sectional length of the fixing part 52 is consistent with the cross-sectional length of the fixing hole 41, that is, the fixing part 52 can extend out of the surface of the fixing hole on the side away from the rolling hole 31 through the fixing hole 41. The fixing part 52 includes a rod part 521 extending from the side end face of the oil retaining surface 51 and protrusions 522 symmetrically arranged on both sides of the top of the rod part 521, and the distance between the two protrusions 522 is greater than the width of the rod part 521. On the side of the fixing hole 41 away from the rolling hole 31, there is a through position and a fixed position 42 (such as Figure 3 The position indicated by the dashed line (not described again below) is a through position, i.e., a fixing hole 41 through which the fixing portion 52 passes. The fixing position 42 is 90° apart from the fixing hole 41. Limiting grooves 421 of a certain depth are provided at both ends of the fixing position 42. Below the protrusion 522, a corresponding limiting groove 421 is provided, which cooperates with the limiting groove 421. The tension spring 523 can cause the protrusion 522 connected thereto to move toward the fixing position 42. As another embodiment, during the movement of the fixing portion 52 from the fixing hole 41, i.e., the through position, toward the fixing position 42, the clearance fit between the protrusion 522 and the surface of the fixing hole 41 facing away from the rolling hole 31 gradually changes to an interference fit.

[0021] The installation process of this embodiment is as follows: the first frame 1 and the second frame 2 are respectively inserted through their respective fixing holes 4 on both sides of the fixing member 5. After completing the insertion of each circumferential fixing member 5, the installation is completed by rotating each fixing member 5 and allowing the tension spring 523 to fall into the limiting groove 421.

[0022] The above embodiment is only one preferred embodiment of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A retainer with struts, comprising a first frame, a second frame, and a fixing member. The corresponding end surfaces of the first and second frames are provided with a plurality of parcel frames and fixing frames evenly distributed along the circumference. Rolling holes for balls to run within are formed between each pair of corresponding parcel frames. Each pair of corresponding fixing frames is provided with fixing holes that can be spliced. The following characteristics are provided: The fixing piece is passed through the fixing hole to fix the first frame and the second frame, and the two ends of the fixing piece are respectively provided with fixing parts that form an expansion fit between the surface of the fixing hole opposite to the rolling hole, and the rolling holes on both sides of the fixing piece are respectively provided with oil baffle surfaces, and a splashing space is formed between the oil baffle surface and the rolling hole.

2. The support bracket according to claim 1, wherein: The oil-blocking surface is an arc-shaped surface, and is provided with a plurality of oil storage holes communicating with the rolling holes on both sides of the fixing member.

3. The support bracket according to claim 1, wherein: The cross-sectional length of the fixing hole is consistent with the cross-sectional length of the fixing portion. After the fixing portion passes through the fixing hole, it is rotated 90° to the fixing position, and an expansion fit is formed between the fixing portion and the surface of the fixing position.

4. The support bracket according to claim 3, wherein: During the movement of the fixing portion from the fixing hole position toward the fixing position, the clearance fit between the fixing portion and the surface of the fixing hole facing away from the rolling hole gradually changes into an interference fit.

5. The support bracket according to claim 3, wherein: Limiting grooves are respectively provided at both ends of the fixed position, and tension springs that can cooperate with the limiting grooves are respectively provided at the two ends of the fixed part corresponding to the two limiting grooves. The tension springs make the fixed part tend to move toward the surface of the fixing hole away from the rolling hole.

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