Injection molding bearing retainer
By setting protrusions on the bearing cage and setting arc and neck sections on the side wall of the pocket, the wear resistance and stability of rolling bearings in harsh environments in solar power generation equipment is solved, and a higher stress strength and service life are achieved.
Patent Information
- Application Number
- CN202421740677.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-22
AI Technical Summary
In solar power generation equipment, the use of rolling bearings has problems with wear resistance and stability in harsh environments, which affects the normal operation and service life of the equipment.
A new bearing cage is designed using injection molding technology. By providing a first protrusion and a second protrusion on the loading medium, the stress area is increased, and arc and neck sections are provided on the side wall of the pocket to improve the wrapping and clamping effect of the rolling body.
It improves the overall stress strength and stability of the bearing cage, enhances the load-bearing capacity of the rolling elements, and extends the service life of the equipment in harsh environments.
Smart Images
Figure CN222811084U_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of bearing cages and specifically relates to an injection molded bearing cage. Background Art
[0002] As one of the representatives of clean energy, photovoltaic power generation provides endless enjoyment for human green life. Every day as the sun rises, the current converted from solar energy can directly drive washing machines, refrigerators, radios, computers, etc. to work; hot water boiled by solar energy continuously supplies bathrooms and kitchens; if it is rainy, people can use the solar energy stored in the accumulator.
[0003] In addition, in the harsh environment of the desert, the use of photovoltaic solar power stations can reduce the invasion of wind and sand on the land and reduce surface evaporation. It has a significant effect on restoring the ecology of the desert and Gobi, and has a great impact on the restoration of the desert ecological environment.
[0004] As environmental problems become increasingly severe, the use of traditional energy sources is gradually restricted, and the development and utilization of new energy sources is becoming increasingly urgent. The current development trend of solar power generation is to use automatic tracking photovoltaic power generation equipment, in which each solar panel can keep pace with the movement of the sun. Compared with traditional fixed solar photovoltaic power generation equipment, which can only generate maximum power for two hours a day, automatic tracking solar panel modules can significantly provide more energy from sunlight radiation.
[0005] In solar power generation equipment, since the adjustment motor movement of the solar power generation equipment has always been in accordance with the same mechanical principle, the motor adjusts the solar panel module to accurately reach each tracking position. The rolling ball bearing ensures the minimum resistance in the tracking movement. In addition, each solar panel module of a set of solar power generation equipment must follow the movement, and many rolling bearings need to be installed and used. The use of rolling bearings is almost irreplaceable.
[0006] According to the shape of the rolling elements, rolling bearings are divided into two categories: ball bearings and roller bearings. Rolling bearings are generally composed of four parts: outer ring, inner ring, rolling element and cage. Cage (i.e. bearing cage, also known as bearing retainer) refers to the bearing part that partially wraps all or part of the rolling elements and moves with them, used to isolate the rolling elements, and usually guides the rolling elements and keeps them in the bearing. Therefore, the cage is a very important component of the bearing, and the structure of the cage directly affects the rotation of the rolling elements, affecting the use effect and service life of the bearing.
[0007] And because solar panels are installed outdoors and may be installed in harsh environments such as deserts, the wear resistance and stability of the bearing retainer are very important. Utility Model Content
[0008] The present application provides an injection-molded bearing retainer to ensure stable use of the retainer under harsh outdoor environmental conditions.
[0009] The technical solution adopted in this application is:
[0010] An injection molded bearing retainer includes a retainer body, and the body is provided with a plurality of pockets, the body includes a plurality of loading bodies, the pockets are arranged at the center of the loading bodies, the loading bodies include a first rolling surface facing the inner ring of the bearing and a second rolling surface facing the outer ring of the bearing, the first rolling surface is provided with a first protrusion facing the inner ring of the bearing, and the second rolling surface is provided with a second protrusion facing the outer ring of the bearing.
[0011] In a preferred implementation of an injection molded bearing retainer, the side wall of the first rolling surface at least partially extends toward the inner ring to form a first protrusion, the side wall of the second rolling surface at least partially extends toward the outer ring to form a second protrusion, and the first protrusion and the second protrusion are symmetrically arranged.
[0012] In a preferred implementation of the injection-molded bearing retainer, the side walls of the pockets are provided with abutment sections extending toward the inner ring and the outer ring, respectively, and the extended ends of the abutment sections are flush with the first protrusion and the second protrusion, respectively.
[0013] In a preferred implementation of the injection-molded bearing cage, the side wall of the pocket is arc-shaped.
[0014] In a preferred implementation of the injection-molded bearing retainer, a necking section is provided extending from the end of the abutting section toward the top and bottom ends of the pocket hole, and the inner diameter of the necking section is smaller than the inner diameter of the abutting section.
[0015] In a preferred implementation of an injection molded bearing retainer, the bottom wall of the first rolling surface and / or the top wall at least partially extend toward the inner ring to form a first protrusion, the bottom wall of the second rolling surface and / or the top wall at least partially extend toward the outer ring to form a second protrusion, and the first protrusion and the second protrusion are symmetrically arranged.
[0016] In a preferred implementation of the injection-molded bearing retainer, the widths of the first protrusion and the second protrusion gradually decrease from the center to both ends.
[0017] In a preferred implementation of the injection-molded bearing retainer, grooves are provided between adjacent retaining bodies.
[0018] In a preferred implementation of the injection-molded bearing retainer, grooves are formed between adjacent first protrusions and between adjacent second protrusions.
[0019] In a preferred implementation of the injection-molded bearing cage, the cage is made of PET material.
[0020] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:
[0021] (1) The first protrusion and the second protrusion are provided to increase the area of the first rolling surface and the second rolling surface, that is, to increase the force-bearing area of the load body, and to increase the overall force-bearing strength of the cage, thereby increasing the bearing strength of the rolling body in the pocket and improving the overall stability of the cage. The first protrusion and the second protrusion are respectively directed toward the inner ring and the outer ring of the bearing, that is, the force-bearing area of the cage is increased in different directions, which is beneficial to improving the force stability of the cage at the first rolling surface and the second rolling surface during use.
[0022] In addition, the first protrusion and the second protrusion have more than one forming form, and different processing positions can be selected according to the processing conditions to form the first protrusion and the second protrusion, or the first protrusion and the second protrusion can be set at different positions to enhance the force balancing effect.
[0023] (2) The side walls of the first rolling surface and the side walls of the second rolling surface are deformed to form the first protrusion and the second protrusion respectively, thereby increasing the width of the side walls of the carrier. This improves the load-bearing stability of the rolling body on the one hand, and improves the connection stability of each carrier on the other hand, thereby preventing the side walls from being too narrow and causing unstable force, which results in the carrier being unable to achieve stable connection while carrying the rolling body, thereby improving the overall stability of the retaining frame.
[0024] (3) The abutment section contacts the rolling element in the pocket, improving the wrapping effect of the pocket on the rolling element and preventing the rolling element from falling. Its extended end is flush with the first protrusion and the second protrusion, which is conducive to ensuring the overall force balance and stability of the cage.
[0025] (4) An arc-shaped pocket side wall is provided so that the pocket side wall can better fit the surface of the rolling element and achieve clamping and limiting of the rolling element.
[0026] (5) By providing a necking section, the diameter of the pocket is reduced in the necking section, thereby improving the clamping effect of the pocket on the rolling element located therein. The necking section is formed by changing the diameter of the pocket, and its processing and assembly methods are simple. The necking section can be processed and adjusted according to the actual size of the rolling element, and can adapt to rolling elements of different sizes under various working conditions.
[0027] (6) By forming symmetrical first and second protrusions on the first rolling surface and the second rolling surface, the force-bearing areas of the first and second rolling surfaces are increased, the bearing stability of the carrier on the rolling element is enhanced, and the overall stability of the retaining frame is also improved.
[0028] (7) The first protrusion and the second protrusion are arranged with a larger width at the center position. Since the pocket is located at the center of the carrier, that is, the width of the portion where the projections of the first protrusion and the second protrusion overlap with the projection of the pocket is larger, the bearing capacity of the retaining frame for the rolling elements located therein is further improved, thereby improving the overall stability of the retaining frame.
[0029] (8) The grooves are provided to reduce the overall weight of the cage and consumables, while ensuring the connection between the carriers. In addition, when the cage is made of flexible material, it can be cut at the grooves according to actual use requirements to obtain the appropriate number of carriers, so that the cage can adapt to various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] 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:
[0031] Figure 1 This is a schematic diagram of the structure of a retainer in one embodiment of the utility model;
[0032] Figure 2 for Figure 1 A magnified view of part A;
[0033] Figure 3 for Figure 1 A magnified view of part B;
[0034] Figure 4 for Figure 1 A cross-sectional view of
[0035] Figure 5 It is a schematic diagram of the assembly structure of the red cage and the roller in one embodiment of the utility model;
[0036] Figure 6 for Figure 5 Enlarged view of part C;
[0037] Figure 7 for Figure 5 A magnified view of the D portion;
[0038] Figure 8 for Figure 5 sectional view of .
[0039] Description of reference numerals:
[0040] 1-carrier, 11-pocket hole, 111-abutment section, 112-neck section, 12-first rolling surface, 121-first protruding portion, 13-second rolling surface, 131-second protruding portion, 14-groove;
[0041] 2- Rolling elements. DETAILED DESCRIPTION
[0042] 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.
[0043] 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 protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.
[0044] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. 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.
[0045] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0046] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.
[0047] The present application provides an injection molded bearing cage, such as Figures 1 to 8As shown, it includes a retaining frame body, and the body is provided with a plurality of pockets 11, the body includes a plurality of mounting bodies 1, the pocket 11 is arranged at the center of the mounting body 1, the mounting body 1 includes a first rolling surface 12 facing the inner ring of the bearing and a second rolling surface 13 facing the outer ring of the bearing, the first rolling surface 12 is provided with a first protrusion 121 facing the inner ring of the bearing, and the second rolling surface 13 is provided with a second protrusion 131 facing the outer ring of the bearing.
[0048] The first protrusion 121 and the second protrusion 131 are provided to increase the areas of the first rolling surface 12 and the second rolling surface 13, that is, to increase the force-bearing area of the mounting body 1, and to increase the overall force-bearing strength of the retaining frame, thereby increasing the bearing strength of the rolling element 2 in the pocket 11 and improving the overall stability of the retaining frame. The first protrusion 121 and the second protrusion are respectively directed toward the inner ring and the outer ring of the bearing, that is, the force-bearing area of the retaining frame is increased in different directions, which is beneficial to improving the force stability of the retaining frame at the first rolling surface 12 and the second rolling surface 13 during use.
[0049] In addition, if Figure 2 , Figure 3 and Figure 6 , Figure 7 As shown, the first protrusion 121 and the second protrusion 131 have more than one forming form, and different processing positions can be selected according to the processing conditions to form the first protrusion 121 and the second protrusion 131, or the first protrusion 121 and the second protrusion 131 can be set at different positions to enhance the force balancing effect.
[0050] In one embodiment, the side wall of the first rolling surface 12 at least partially extends toward the inner ring to form a first protrusion 121, and the side wall of the second rolling surface 13 at least partially extends toward the outer ring to form a second protrusion 131, and the first protrusion 121 and the second protrusion 131 are symmetrically arranged.
[0051] By processing and deforming the side wall of the first rolling surface 12 and the side wall of the second rolling surface 13 to form the first protrusion 121 and the second protrusion 131 respectively, the side wall width of the carrier 1 is strengthened, which, on the one hand, improves the load-bearing stability effect on the rolling element 2, and on the other hand, improves the connection stability of each carrier 1 to avoid the side wall being too narrow and causing unstable force, which makes it impossible for the carrier 1 to achieve stable connection while carrying the rolling element 2, thereby improving the overall stability of the retaining frame.
[0052] Furthermore, the side walls of the pocket hole 11 are respectively provided with abutment sections 111 extending toward the inner ring and the outer ring, and the extending ends of the abutment sections 111 are respectively flush with the first protruding portion 121 and the second protruding portion 131 .
[0053] The abutment section 111 contacts the rolling body 2 in the pocket 11, improving the wrapping effect of the pocket 11 on the rolling body 2 and preventing the rolling body 2 from falling. Its extended end is flush with the first protrusion 121 and the second protrusion 131, which is conducive to ensuring the overall force balance and stability of the cage.
[0054] Preferably, the side wall of the pocket 11 is arc-shaped.
[0055] The side wall of the pocket hole 11 is provided with an arc shape so that the side wall of the pocket hole 11 can better fit the surface of the rolling body 2 to achieve clamping and limiting of the rolling body 2 .
[0056] In a preferred embodiment, Figure 4 , Figure 8 As shown, a necking section 112 is provided along the end of the abutting section 111 extending toward the top and bottom ends of the pocket hole 11 , and the inner diameter of the necking section 112 is smaller than the inner diameter of the abutting section 111 .
[0057] By providing the necking section 112, the diameter of the inner ring of the pocket 11 is not unique, and the necking section 112 plays a limiting role on the rolling body 2 located in the pocket 11, so that the diameter of the pocket 11 is reduced in the necking section 112, and the clamping effect of the pocket 11 on the rolling body 2 located therein is improved, and the rolling body 2 is prevented from falling from the pocket 11. At the same time, the necking section 112 does not contact the rolling body 2, thereby reducing the contact area between the pocket 11 and the rolling body 2, and reducing the friction between the inner wall of the pocket 11 and the rolling body 2. The necking section 112 is formed by changing the diameter of the pocket 11, and its processing and assembly methods are simple, and the necking section 112 can be processed and adjusted according to the actual size of the rolling body 2, and can adapt to rolling bodies 2 of different sizes under various working conditions.
[0058] In one embodiment, the bottom wall and / or the top wall of the first rolling surface 12 at least partially extend toward the inner ring to form a first protrusion 121, the bottom wall and / or the top wall of the second rolling surface 13 at least partially extend toward the outer ring to form a second protrusion 131, and the first protrusion 121 and the second protrusion 131 are symmetrically arranged.
[0059] By forming symmetrical first and second protrusions 121 and 131 on the first and second rolling surfaces 12 and 13, the force bearing areas of the first and second rolling surfaces 12 and 13 are increased, the bearing stability of the carrier 1 on the rolling element 2 is enhanced, and the overall stability of the cage is also improved.
[0060] Preferably, the widths of the first protruding portion 121 and the second protruding portion 131 gradually decrease from the center to both ends.
[0061] The first protrusion 121 and the second protrusion 131 are arranged with a larger width at the center position. Since the pocket 11 is located at the center of the carrier 1, the width of the portion where the projections of the first protrusion 121 and the second protrusion 131 overlap with the projection of the pocket 11 is larger, which further improves the bearing capacity of the retaining frame for the rolling elements 2 located therein and improves the overall stability of the retaining frame.
[0062] In one embodiment, grooves 14 are provided between adjacent carriers 1 .
[0063] The grooves 14 are provided to reduce the overall weight of the cage and consumables, while ensuring the connection between the carriers 1. In addition, when the cage is made of flexible material, it can be cut at the grooves 14 according to actual use requirements to obtain a suitable number of carriers 1, so that the cage can adapt to various working conditions.
[0064] Preferably, grooves 14 are formed between adjacent first protrusions 121 and between adjacent second protrusions 131 .
[0065] In one embodiment, the cage is made of PET material. This material has good weather resistance and wear resistance and can be used outdoors for a long time. According to the use scenario of the cage, this material is selected to make the cage, which increases the service life of the cage outdoors, especially in harsh environmental conditions.
[0066] In addition, since PET is a flexible material, the cage of the present application can be cut into lengths according to the number of pockets 11 required, and the two ends of the cut cage can be connected and fixed by splicing or other connection methods to form the final shape. This method greatly improves the compatibility and adaptability of the cage under different working conditions, and can avoid collision damage between cages or collision damage between cages and other components during storage and use, further improving the quality and stability of the cage.
[0067] Anything not described in this application can be achieved by adopting or drawing on existing technologies.
[0068] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.
[0069] The above is only 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 modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims
1. An injection molded bearing cage, comprising a cage body, wherein the body is provided with a plurality of pockets, characterized in that: The main body includes a plurality of loading bodies, the pocket is arranged at the center of the loading body, the loading body includes a first rolling surface facing the inner ring of the bearing and a second rolling surface facing the outer ring of the bearing, the first rolling surface is provided with a first protrusion facing the inner ring of the bearing, and the second rolling surface is provided with a second protrusion facing the outer ring of the bearing.
2. The injection molded bearing retainer according to claim 1, characterized in that: The side wall of the first rolling surface at least partially extends toward the inner ring to form the first protrusion, and the side wall of the second rolling surface at least partially extends toward the outer ring to form the second protrusion, and the first protrusion and the second protrusion are symmetrically arranged.
3. The injection molded bearing retainer according to claim 2, characterized in that: The side walls of the pockets are respectively provided with abutment sections extending toward the inner ring and the outer ring, and the extending ends of the abutment sections are respectively flush with the first protruding portion and the second protruding portion.
4. The injection molded bearing retainer according to claim 3, characterized in that: The side wall of the pocket hole is arc-shaped.
5. The injection molded bearing retainer according to claim 3, characterized in that: A necking section is provided along the end of the abutting section extending toward the top and bottom ends of the pocket hole, and the inner diameter of the necking section is smaller than the inner diameter of the abutting section.
6. The injection molded bearing cage according to claim 1, characterized in that: The bottom wall and / or the top wall of the first rolling surface at least partially extend toward the inner ring to form the first protrusion, the bottom wall and / or the top wall of the second rolling surface at least partially extend toward the outer ring to form the second protrusion, and the first protrusion and the second protrusion are symmetrically arranged.
7. The injection molded bearing retainer according to claim 6, characterized in that: The widths of the first protrusion and the second protrusion gradually decrease from the center to both ends.
8. The injection molded bearing retainer according to claim 1, characterized in that: Grooves are arranged between adjacent carriers.
9. The injection molded bearing retainer according to claim 8, characterized in that: The grooves are formed between adjacent first protrusions and between adjacent second protrusions.
10. The injection molded bearing cage according to claim 1, characterized in that: The retaining frame is made of PET material.