Special anti-trimming O-shaped ring for bearing
By setting grooves on the side wall of the O-ring and using the design of bearing slots, the O-ring is avoided to be cut during bearing installation, solving the problems of degraded sealing performance and bearing peristalsis, and achieving better sealing and friction.
Patent Information
- Application Number
- CN202422019487.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-20
AI Technical Summary
Existing O-rings are easily cut during bearing installation, resulting in degradation of sealing performance and bearing peristalsis.
A special anti-cutting O-ring for bearings is designed, with grooves provided with side walls and a slot on the outer ring of the bearing. The O-ring is extruded and deformed during installation and stored in the groove to avoid being cut.
It effectively avoids the O-ring being cut, ensures good sealing and friction between the bearing and the bearing mating surface, prevents bearing creeping, and extends the service life of the O-ring.
Smart Images
Figure CN222924935U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of O-rings, in particular to a special anti-cutting-edge O-ring for bearings. Background Art
[0002] The O-ring, also known as an O-ring rubber seal, is a rubber seal with a circular cross-section. Since the mid-19th century, it has been widely used in various mechanical equipment as a sealing element. Due to its advantages such as low price, simple manufacturing, reliable function, and simple installation requirements, the O-ring has become the most common mechanical design for sealing.
[0003] In addition to being used as a mechanical element for sealing, the O-ring can also be used to connect between the bearing and the housing to prevent the bearing from creeping. By being installed in the groove on the bearing mating surface, its compression resilience and friction with the mating surface are used to achieve sealing and anti-creeping.
[0004] Improper design and use of the O-ring will accelerate its damage and cause the loss of sealing performance. When all parts of the sealing device are reasonably designed, simply increasing the pressure will not cause damage to the O-ring. Combining Figure 3 As shown, the main reason for the current damage to the O-ring is that during the process of installing the bearing onto the bearing mating surface, due to excessive interference fit, the O-ring will be cut at the edge, resulting in the inability to provide a small resilience, and the bearing will creep during use. Summary of the Utility Model
[0005] To solve the above technical problems, the utility model provides a special anti-cutting-edge O-ring for bearings. When installing the bearing, the O-ring can be extruded and filled in the groove, effectively avoiding being cut at the edge by the end edge of the bearing mating surface and preventing the bearing from creeping.
[0006] The technical solution adopted by the utility model to solve its technical problems is: a special anti-cutting-edge O-ring for bearings, including an O-ring body, and a plurality of grooves are provided on the side wall of the O-ring body.
[0007] A clamping groove is provided on the outer ring of the bearing, the O-ring body is arranged in the clamping groove, and part of the O-ring body is located outside the clamping groove, that is, protruding from the outer wall of the outer ring of the bearing. During the process of the bearing being axially slid and installed onto the bearing mating surface, the end edge of the bearing mating surface comes into contact and extrusion with the O-ring body, and the O-ring body will be extruded and deformed. Since the O-ring body is provided with grooves, during the deformation process of the O-ring body, the O-ring body protruding from the clamping groove will be extruded and stored in the grooves, thereby avoiding being cut at the edge by the end edge of the bearing mating surface.
[0008] Preferably, the grooves are located on the outer side wall of the O-ring body. This is convenient for better storing the extruded part of the O-ring body.
[0009] Preferably, each groove is a strip-shaped groove, which can cover a larger range and provide more storage space.
[0010] Preferably, the groove is inclined with respect to the end face of the O-ring body. When the bearing mating surface is squeezed, the protruding O-ring body can be gradually squeezed into the groove, better avoiding being cut off.
[0011] Preferably, the grooves are arranged in parallel with each other. During the extrusion process of the O-ring body, the stress distribution is more uniform.
[0012] Preferably, the grooves are evenly distributed on the side wall of the O-ring body. During the extrusion process of the O-ring body, the stress distribution is more uniform.
[0013] Preferably, the groove is a spiral groove provided on the outer surface of the O-ring body, which can enable the O-ring body to have the ability to accommodate the protruding part after being squeezed in all directions.
[0014] Preferably, the width of the groove is 1 / 3 - 1 of the cross-sectional diameter of the O-ring body, which can provide a accommodation space while retaining the necessary effect of increasing friction.
[0015] Advantages of the present utility model:
[0016] When installing the bearing, the O-ring can be squeezed and filled in the groove, effectively avoiding being cut off by the edge of the bearing mating surface, and can provide sufficient friction for the cooperation between the bearing and the bearing mating surface, preventing the bearing housing from creeping. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some of the drawings of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0018] Figure 1 It is a schematic diagram of an embodiment of the present utility model;
[0019] Figure 2 It is a schematic diagram of the principle of avoiding edge cutting in an embodiment of the present utility model;
[0020] Figure 3 It is a schematic diagram of the principle of edge cutting in the prior art;
[0021] Among them, 1, O-ring body; 2, groove; 3, bearing; 4, bearing mating surface; 5, card slot. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] To deepen the understanding of the present utility model, the following will further describe the present utility model in detail with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present utility model and do not limit the protection scope of the present utility model.
[0023] Embodiment
[0024] As Figure 1 shown, a special anti-cutting-edge O-ring for bearings includes an O-ring body 1, and a plurality of grooves 2 are provided on the side wall of the O-ring body 1.
[0025] A clamping groove 5 is provided on the outer ring of the bearing 3, the O-ring body 1 is arranged in the clamping groove 5, and a part of the O-ring body 1 is located outside the clamping groove 5, that is, protruding from the outer wall of the outer ring of the bearing 3. During the process of the bearing 3 sliding axially to the bearing mating surface 4, the edge of the end of the bearing mating surface 4 comes into contact and presses against the O-ring body 1, and the O-ring body 1 will be squeezed and deformed. Since the O-ring body 1 is provided with grooves 2, during the deformation process of the O-ring body 1, the O-ring body 1 protruding from the clamping groove 5 will be squeezed and stored in the grooves 2, thereby avoiding being cut by the edge of the end of the bearing mating surface 4.
[0026] The groove 2 is located on the outer side wall of the O-ring body 1. It is convenient to better store the squeezed part of the O-ring body 1.
[0027] Each groove 2 is a strip-shaped groove. It can cover a larger range and provide more storage space.
[0028] The groove 2 is inclined with respect to the end face of the O-ring body 1. When the bearing mating surface 4 presses, it is convenient to gradually squeeze the protruding O-ring body 1 into the groove 2, and better avoid being cut.
[0029] Each of the grooves 2 is arranged in parallel. During the extrusion process of the O-ring body 1, the stress distribution is more uniform.
[0030] Each of the grooves 2 is evenly distributed on the side wall of the O-ring body 1. During the extrusion process of the O-ring body 1, the stress distribution is more uniform.
[0031] The groove 2 is a spiral groove 2 provided on the outer surface of the O-ring body 1. It can enable the O-ring body 1 to have the ability to accommodate the protruding part after being squeezed in all directions.
[0032] The width of the groove 2 is 1 / 3 - 1 of the cross-sectional diameter of the O-ring body 1. While providing a storage space, it can play the effect of retaining the necessary increased friction.
[0033] The beneficial effects of the present utility model:
[0034] When installing the bearing 3, the O-ring body 1 can be extruded and filled in the groove 2, effectively preventing it from being cut along the edge of the bearing mating surface 4, and can provide sufficient frictional force for the mating of the bearing 3 and the bearing mating surface 4 to prevent the creep of the bearing 3 housing.
[0035] Since the deformation of the O-ring in the groove is small, the original anti-torsion moment can be maintained for a long time, increasing the service life of the O-ring.
[0036] It should be noted that although the present solution is an O-ring, the actual sealing mentioned is not a completely isolated seal. Even if there is air leakage, it does not affect the use. Its main purpose is to increase the frictional force and prevent the bearing from creeping relative to the bearing mating surface.
[0037] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.
[0038] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.
Claims
1. A special anti-cutting O-ring for a bearing, characterized in that: Including O-ring body (1), The side wall of the O-ring body (1) is provided with a plurality of grooves (2).
2. A special anti-cutting O-ring for a bearing according to claim 1, characterized in that: The groove (2) is located on the outer side wall of the O-ring body (1).
3. A special anti-cutting O-ring for a bearing according to claim 1 or 2, characterized in that: Each groove (2) is a strip-shaped groove.
4. A special anti-cutting O-ring for a bearing according to claim 3, characterized in that: The groove (2) is arranged to be inclined relative to the end surface of the O-ring body (1).
5. The special anti-cutting O-ring for bearing according to claim 3, characterized in that: The grooves (2) are arranged parallel to each other.
6. The special anti-cutting O-ring for bearing according to claim 1, characterized in that: The grooves (2) are evenly distributed on the side wall of the O-ring body (1).
7. The special anti-cutting O-ring for bearing according to claim 1, characterized in that: The groove (2) is a spiral groove (2) arranged on the outer surface of the O-ring body (1).
8. The special anti-cutting O-ring for bearings according to claim 1, characterized in that: The width of the groove (2) is 1 / 3-1 of the cross-sectional diameter of the O-ring body (1).