Dustproof bearing sealing ring for wheel disc of bicycle

Abstract

The utility model discloses a bicycle wheel disc dustproof bearing sealing ring which comprises a sealing ring body arranged between two ring bodies of a bearing. The number of the lip rings is two, the lip rings are arranged on the inner wall and the outer wall of the sealing ring body respectively, and the two lip rings abut against the two adjacent ring bodies respectively to achieve sealing. Wherein a baffle ring is arranged at one end, far away from the bearing, of the sealing ring body; the baffle ring abuts against the end face of at least one ring body, and a gap between the corresponding ring body and the sealing ring body is sealed by the baffle ring. The sealing ring has the beneficial effects that the baffle ring for sealing the seam between the ring body and the sealing ring body is arranged on the outer side of the sealing ring body, so that dust and silt can be prevented from being attached to the seam, then the dust and silt are prevented from invading the space between the two ring bodies, external dust is effectively prevented from entering a bearing, and the service life of the bearing and the service life of the sealing ring body are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing rings, in particular to a dustproof bearing sealing ring for a bicycle wheel. Background Art

[0002] The bicycle wheel is an important part of the bicycle, which is responsible for converting human power into the rotation of the wheel and providing power for the bicycle. The main function of the bicycle wheel dustproof bearing seal is to prevent dust and moisture from entering the bearing during the operation of the bicycle, thereby ensuring the normal operation of the bearing and extending its service life. During the long-term use of the bicycle, it will face various complex road conditions and weather conditions, which will directly affect the service life and sealing effect of the seal.

[0003] A Chinese patent document with publication number CN211175035U discloses a dustproof and waterproof sealing ring for a bicycle bearing, comprising an inner ring and an outer ring, a retaining frame is arranged between the inner ring and the outer ring, and a rolling body is arranged between the retaining frames, a sealing ring body is arranged between the inner ring and the outer ring, and a mounting ring is arranged on an outer wall of one side of the sealing ring body, a rubber ring is bonded to the outer wall of the mounting ring, and four clamping strip mechanisms are arranged on the outer wall of the mounting ring at equal distances, and four arc blocks are arranged on the inner wall of the outer ring, and arc grooves matching the clamping strip mechanisms are opened on the outer walls of the four arc blocks.

[0004] In the above patent solution, the sealing forms set between the sealing ring body, rubber ring, mounting ring and inner ring and outer ring are all contact seals. The card strip structure and the arc block are originally discontinuously set, so the sealing effect is general, and the sealing effect will gradually decrease with the increase of use time. The above patent solution can only meet the internal sealing of the wheel bearing. When facing the invasion of dust and sand, the sealing effect is limited. Utility Model Content

[0005] In order to overcome the technical problem that the sealing ring of the wheel bearing in the prior art can only meet the internal sealing of the bearing, and when facing the invasion of external dust and sand, the sealing will fail, and the dust and sand will invade the bearing gap; one purpose of the utility model is to provide a dust-proof bearing sealing ring for a bicycle wheel, by adding a retaining ring on the outer periphery of the sealing ring to block the gap between the outer ring of the bearing and the sealing ring, to prevent external dust and sand from adhering to the gap between the sealing ring and the outer ring of the bearing, thereby improving the sealing effect.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a bicycle wheel dustproof bearing sealing ring, comprising a sealing ring body, which is arranged between two ring bodies of the bearing; a lip ring, wherein the number of the lip rings is two, which are respectively arranged on the inner wall and the outer wall of the sealing ring body, and the two lip rings are respectively abutted against two adjacent ring bodies to achieve sealing; wherein a retaining ring is arranged at one end of the sealing ring body away from the bearing; the retaining ring is abutted against the end face of at least one of the ring bodies, and the corresponding gap between the ring body and the sealing ring body is sealed by the retaining ring.

[0007] The two lip rings are respectively sealed against the two ring bodies to prevent external dust and sand from invading between the two ring bodies, and also prevent the lubricating grease between the two ring bodies from leaking out.

[0008] However, due to the relative movement between the two ring bodies and the sealing ring body, dust and sand that have long been attached to the joints between the two ring bodies will still enter between the two ring bodies during the relative movement. The retaining ring blocks the joints between the ring bodies and the sealing body, that is, adds a layer of sealing structure to prevent dust and sand from adhering to the joints, reduces the wear of the sealing ring body, and extends the service life of the sealing ring body and the bearing.

[0009] The installation space of the sealing ring body between the two ring bodies is limited, and the additional sealing structure is arranged on the outside of the two ring bodies. The sealing effect can be further improved by increasing the thickness of the retaining ring, thereby further extending the service life of the sealing ring body.

[0010] Specifically, the two ring bodies are respectively a bearing outer ring and a bearing inner ring; the inner diameter of the bearing outer ring is larger than the outer diameter of the bearing inner ring; and the retaining ring only abuts against the end face of the bearing outer ring.

[0011] Furthermore, an annular groove is provided on the side of the ring body facing the sealing ring body; the two lip rings are respectively located in the two annular grooves; the two lip rings are respectively an outer lip abutting against the outer ring of the bearing and an inner lip abutting against the inner ring of the bearing; an outward turn ring is provided at one end of the outer lip facing the outer side of the bearing; the outward turn ring extends toward the outside of the bearing until it is tightly abutted against the inner wall of the adjacent annular groove.

[0012] That is, the outer lip is inserted into the annular groove of the bearing outer ring and assembled with the outer lip by interference fit, which also ensures that the retaining ring and the bearing outer ring are sealed against each other, thereby improving the sealing effect.

[0013] Specifically, an inverted ring is arranged at one end of the inner lip facing the inner side of the bearing, and the inverted ring extends toward the inner side of the bearing until it is tightly abutted against the adjacent annular groove.

[0014] Specifically, an inner wall of the sealing ring body is provided with an inner concave ring; the inner concave ring is located outside the inner lip.

[0015] When the sealing ring body is pressed between the two ring bodies, the inner concave ring provides space for the elastic deformation of the inner lip, so that the sealing ring body is pressed onto the bearing.

[0016] Furthermore, a frame is provided in the sealing ring body; an axial ring is provided on the outer wall of the frame; and the axial ring extends along the axial direction of the frame toward the bearing.

[0017] The axial ring increases the structural strength of the frame, preventing the frame from torsional deformation, thereby increasing the structural strength of the sealing ring body and enhancing the sealing effect of the sealing ring body.

[0018] Furthermore, one end of the sealing ring body facing the inner side of the bearing has an annular opening; two inner walls of the annular opening are respectively provided with clamping edges; the clamping edges are used to embed the skeleton into the annular opening.

[0019] Preferably, an inclined ring is provided on the inner wall of the frame; the inclined ring extends obliquely toward the inner side of the bearing.

[0020] Preferably, a height of the inclined ring along the axial direction of the skeleton is smaller than a height of the axial ring along the axial direction of the skeleton.

[0021] The axial ring and the inclined ring respectively abut against the inner sides of the two clamping edges. When the sealing ring body is assembled, the inclined ring facilitates the clamping of the clamping edges and prevents the sealing ring body from being separated from the frame.

[0022] Compared with the prior art, the beneficial effect of the utility model is that by arranging a retaining ring at the joint between the sealing ring body and the sealing ring body on the outside of the sealing ring body, dust and sand can be prevented from adhering to the joint, and then dust and sand can be prevented from invading between the two ring bodies, effectively preventing external dust from entering the bearing, thereby ensuring the service life of the bearing and the sealing ring body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the assembly structure of the utility model;

[0024] Figure 2 It is a radial cross-sectional schematic diagram of the utility model.

[0025] In the figure: 1. bearing inner ring; 2. bearing outer ring; 3. sealing ring body; 31. retaining ring; 32. outer lip; 321. outward turning ring; 33. inner lip; 331. inward turning ring; 34. clamping edge; 35. inner concave ring; 4. skeleton; 41. axial ring; 42. tilting ring. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0027] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention 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 cannot be understood as limiting the specific protection scope of the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise specified and limited, the terms "setting", "installation" 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 also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or two elements can be internally connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] See also Figure 1-Figure 2 A bicycle wheel dustproof bearing seal ring comprises a seal ring body 3 arranged between two bearing ring bodies; the two ring bodies are respectively a bearing inner ring 1 and a bearing outer ring 2; the outer diameter of the bearing inner ring 1 is smaller than the inner diameter of the bearing outer ring 2; a retaining ring 31 is arranged at one end of the seal ring body 3 away from the bearing; the retaining ring 31 abuts against the end face of the bearing outer ring 2, thereby sealing the joint between the seal ring body 3 and the bearing outer ring 2.

[0031] An annular groove coaxially arranged with the sealing ring body 3 is provided at one end of the ring body facing the sealing ring body 3; lip rings are provided on the inner wall and the outer wall of the sealing ring body 3 respectively; the lip rings are located in the annular groove; the two lip rings are respectively an outer lip 32 located in the annular groove of the bearing outer ring 2 and an inner lip 33 located in the annular groove of the bearing inner ring 1; the outer lip 32 is provided with an outer turn ring 321 extending toward the outer side of the bearing to abut against the adjacent annular groove; the inner lip 33 is provided with an inner turn ring 331 extending toward the inner side of the bearing to abut against the adjacent annular groove; an inner concave ring 35 is provided on the inner wall of the sealing ring body 3; the inner concave ring 35 is located outside the inner lip 33.

[0032] A skeleton 4 is arranged inside the sealing ring body 3; an axial ring 41 is arranged on the outer wall of the skeleton 4; the axial ring 41 extends along the axial direction of the skeleton 4 toward the bearing direction; an inclined ring 42 is arranged on the inner wall of the skeleton 4; the inclined ring 42 extends obliquely toward the inner side of the bearing; the sealing ring body 3 has an annular opening at one end facing the inner side of the bearing; clamping edges 34 are respectively arranged on the two inner walls of the annular opening; the axial ring 41 and the inclined ring 42 are respectively located between the inner wall of the annular opening and the clamping edge 34; the height of the inclined ring 42 along the axial direction of the skeleton 4 is less than the height of the axial ring 41 along the axial direction of the skeleton 4.

[0033] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A dustproof bearing seal ring for a bicycle wheel, characterized in that: It includes a sealing ring body, which is arranged between two ring bodies of the bearing; Lip rings, the number of which is two, which are respectively arranged on the inner wall and the outer wall of the sealing ring body, and the two lip rings respectively abut against two adjacent ring bodies to achieve sealing; A retaining ring is arranged at one end of the sealing ring body away from the bearing; the retaining ring abuts against at least one end face of the ring body, and the corresponding gap between the ring body and the sealing ring body is sealed by the retaining ring.

2. The sealing ring according to claim 1, characterized in that: The two ring bodies are respectively the outer ring of the bearing and the inner ring of the bearing; the inner diameter of the outer ring of the bearing is larger than the outer diameter of the inner ring of the bearing; and the retaining ring only abuts against the end face of the outer ring of the bearing.

3. The sealing ring according to claim 2, characterized in that: An annular groove is provided on the side of the ring body facing the sealing ring body; the two lip rings are respectively located in the two annular grooves; the two lip rings are respectively an outer lip abutting against the outer ring of the bearing and an inner lip abutting against the inner ring of the bearing; an outward turn ring is provided at one end of the outer lip facing the outer side of the bearing; the outward turn ring extends toward the outside of the bearing until it is tightly abutted against the inner wall of the adjacent annular groove.

4. The sealing ring according to claim 3, characterized in that: An inverted ring is arranged at one end of the inner lip facing the inner side of the bearing, and the inverted ring extends toward the inner side of the bearing until it is tightly pressed against the adjacent annular groove.

5. The sealing ring according to claim 3, characterized in that: The inner wall of the sealing ring body is provided with an inner concave ring; the inner concave ring is located on the outer side of the inner lip.

6. The sealing ring according to any one of claims 1 to 5, characterized in that: A frame is arranged in the sealing ring body; an axial ring is arranged on the outer wall of the frame; and the axial ring extends along the axial direction of the frame toward the bearing.

7. The sealing ring according to claim 6, characterized in that: The sealing ring body has an annular opening at one end facing the inner side of the bearing; two inner walls of the annular opening are respectively provided with clamping edges; the clamping edges are used to embed the frame into the annular opening.

8. The sealing ring according to claim 7, characterized in that: The inner wall of the frame is provided with an inclined ring; the inclined ring extends obliquely toward the inner side of the bearing.

9. The sealing ring according to claim 8, characterized in that: A height of the inclined ring along the axial direction of the skeleton is smaller than a height of the axial ring along the axial direction of the skeleton.

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