Miniature bearing dust cover

Abstract

The utility model discloses a miniature bearing dust cover which comprises a bearing outer ring, a bearing inner ring arranged on the inner side of the bearing outer ring, an inner arc-shaped cavity formed in the inner wall of the bearing outer ring, an outer arc-shaped cavity formed in the outer wall of the bearing inner ring, and a ball retainer arranged between the outer arc-shaped cavity and the inner arc-shaped cavity. A plurality of ball bodies are arranged on the inner side of the ball retainer, the outer walls of the two sides of each ball body make contact with the inner wall of the inner arc-shaped cavity and the inner wall of the outer arc-shaped cavity respectively, dustproof cover bodies are installed at the two ends of the ball retainer, the outer walls of the dustproof cover bodies make contact with the inner wall of the bearing outer ring, and the dustproof cover bodies are made of engineering plastics. The dustproof cover not only can ensure that the dustproof cover body can still keep good sealing performance and durability in a severe environment so as to guarantee the protection effect of the dustproof cover body on the ball body, but also achieves the purpose of easily and quickly disassembling, assembling and maintaining the dustproof cover body, simplifies the structure of the dustproof cover, and improves the production efficiency. Therefore, the dustproof cover is easy to manufacture and process.

Description

Technical Field

[0001] This utility model relates to the field of mechanical component protection technology, specifically a miniature bearing dust cover. Background Technology

[0002] Miniature bearings are widely used in precision instruments, electronic equipment, and aerospace due to their small size, light weight, and high precision. However, these applications are often accompanied by complex and variable environmental conditions, such as high dust and high humidity. These factors can easily lead to internal contamination of the bearing, accelerate wear, and affect the bearing performance and the overall operating efficiency of the equipment. Therefore, it is particularly important to develop a dust cover for miniature bearings.

[0003] A miniature bearing dust cover, as described in reference announcement number CN207093595U, includes an outer ring, an inner ring, and balls located between the outer and inner rings. A dustproof groove is provided on the inner side of the outer ring, and the dust cover is fitted between the dustproof groove and the inner ring. The dust cover is characterized by a rolled edge at its outer end, the rolled edge being V-shaped with its opening facing the end face of the outer ring; the dustproof groove is a V-shaped groove, with one side wall parallel to the end face of the outer ring and the other side wall inclined relative to the end face of the outer ring. This bearing dust cover is easy to assemble, not easily detached, has good dustproof performance, and exhibits minimal deformation of the dust cover and the bearing outer ring after installation, resulting in high rotational accuracy and a long service life. However, while this bearing dust cover can be widely used, it often struggles to maintain good sealing and durability in harsh environments, making it difficult to achieve the expected protection effect on the inner ball components of the bearing, frequently causing problems for users. Utility Model Content

[0004] The purpose of this utility model is to provide a miniature bearing dust cover to solve the problem mentioned in the background art that although bearing dust covers can be used well, they usually cannot maintain good sealing and durability in harsh environments, making it difficult for them to achieve the expected protection effect on the inner ball components of the bearing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a miniature bearing dust cover, comprising a bearing outer ring, an inner bearing ring disposed on the inner side of the bearing outer ring, an inner arc-shaped cavity disposed on the inner wall of the bearing outer ring, an outer arc-shaped cavity disposed on the outer wall of the bearing inner ring, a ball retainer disposed between the outer arc-shaped cavity and the inner arc-shaped cavity, a plurality of ball bodies disposed on the inner side of the ball retainer, the outer walls of the two sides of the ball bodies respectively contacting the inner walls of the inner arc-shaped cavity and the outer arc-shaped cavity, a dust cover body is installed at both ends of the ball retainer, the outer wall of the dust cover body contacts the inner wall of the bearing outer ring, and the inner wall of the dust cover body contacts the outer wall of the bearing inner ring, the dust cover body being made of engineering plastic.

[0006] Preferably, a first main magnetic absorbing piece is provided on the outer wall of the dust cover body. The first main magnetic absorbing piece is arranged in a ring structure so as to magnetically place the dust cover body.

[0007] Preferably, a second main magnetic absorbing piece is provided on the inner wall of the dust cover body. The second main magnetic absorbing piece is arranged in a ring structure so as to magnetically attach the dust cover body.

[0008] Preferably, a first auxiliary magnetic absorbing piece is provided on the inner wall of both ends of the outer ring of the bearing. The inner wall of the first auxiliary magnetic absorbing piece is attracted to the outer wall of the first main magnetic absorbing piece. The dust cover body is magnetically placed on the inner wall of the outer ring of the bearing by the first auxiliary magnetic absorbing piece.

[0009] Preferably, a second auxiliary magnetic absorbing piece is provided on the outer wall of both ends of the inner ring of the bearing. The outer wall of the second auxiliary magnetic absorbing piece is attracted to the inner wall of the second main magnetic absorbing piece. The dust cover body is magnetically placed on the outer wall of the inner ring of the bearing by means of the second auxiliary magnetic absorbing piece.

[0010] Preferably, the thickness of the first auxiliary magnetic absorbing piece is equal to the thickness of the first main magnetic absorbing piece, and the thickness of the second main magnetic absorbing piece is equal to the thickness of the second auxiliary magnetic absorbing piece. By setting the thickness of the first auxiliary magnetic absorbing piece to be equal to that of the first main magnetic absorbing piece, and the thickness of the second main magnetic absorbing piece to be equal to that of the second auxiliary magnetic absorbing piece, it is easy to magnetically place the dust cover body between the outer ring and the inner ring of the bearing.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the miniature bearing dust cover can not only ensure that the dust cover body can maintain good sealing and durability in harsh environments to ensure the protective effect of the dust cover body on the ball body, but also achieve the purpose of easy disassembly and maintenance of the dust cover body, and simplify the structure of the dust cover to facilitate the manufacturing and processing of the dust cover.

[0012] (1) The dust cover body is made of high-strength, corrosion-resistant and low-friction coefficient engineering plastic to ensure that the dust cover body can maintain good sealing and durability in harsh environments. At the same time, the use of engineering plastic also takes into account the need for lightweighting to reduce the extra burden of the dust cover body on the bearings and equipment, thereby ensuring the protective effect of the dust cover body on the ball body.

[0013] (2) By setting a first auxiliary magnetic absorbing piece and a second auxiliary magnetic absorbing piece on the inner wall of the outer ring of the bearing and the outer wall of the inner ring of the bearing respectively, and setting a first main magnetic absorbing piece and a second main magnetic absorbing piece on the outer wall of the dust cover body and the inner wall of the dust cover body respectively, when the dust cover body is placed between the outer ring of the bearing and the inner ring of the bearing, the first auxiliary magnetic absorbing piece is attracted to the first main magnetic absorbing piece, and the second auxiliary magnetic absorbing piece is attracted to the second main magnetic absorbing piece, so that the dust cover body can be magnetically placed, thereby achieving the purpose of easy and quick disassembly and maintenance of the dust cover body;

[0014] (3) By setting the second main magnetic piece and the first main magnetic piece on the inner and outer walls of the dust cover body respectively, the main body of the dust cover can be formed by combining them. Compared with the traditional dust cover that is bolted and snapped, the design structure of this dust cover is simplified, making it easier to manufacture and process the dust cover. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a frontal cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of the bearing outer ring and bearing inner ring structure of this utility model;

[0018] Figure 4 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Bearing outer ring; 101. Inner arc cavity; 2. Bearing inner ring; 201. Outer arc cavity; 3. Dust cover body; 4. Ball cage; 5. Ball body; 6. First auxiliary magnetic absorbing plate; 7. Second auxiliary magnetic absorbing plate; 8. First main magnetic absorbing plate; 9. Second main magnetic absorbing plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figure 1-4An embodiment of this utility model provides a miniature bearing dust cover, including a bearing outer ring 1, an inner bearing inner ring 2 disposed on the inner side of the bearing outer ring 1, an inner arc-shaped cavity 101 disposed on the inner wall of the bearing outer ring 1, an outer arc-shaped cavity 201 disposed on the outer wall of the bearing inner ring 2, a ball retainer 4 disposed between the outer arc-shaped cavity 201 and the inner arc-shaped cavity 101, a plurality of ball bodies 5 disposed on the inner side of the ball retainer 4, the outer walls on both sides of the ball bodies 5 respectively contact the inner walls of the inner arc-shaped cavity 101 and the outer arc-shaped cavity 201, a dust cover body 3 is installed at both ends of the ball retainer 4, the outer wall of the dust cover body 3 contacts the inner wall of the bearing outer ring 1, and the inner wall of the dust cover body 3 contacts the outer wall of the bearing inner ring 2, the dust cover body 3 is made of engineering plastic, and a first main magnetic absorbing piece 8 is disposed on the outer wall of the dust cover body 3, the first main magnetic absorbing piece 8 is arranged in a ring structure;

[0022] In use, the dust cover body 3 is magnetically attached by setting the first main magnetic piece 8;

[0023] A second main magnetic absorbing piece 9 is provided on the inner wall of the dust cover body 3, and the second main magnetic absorbing piece 9 is arranged in a ring structure;

[0024] In use, the dust cover body 3 is magnetically attached by setting the second main magnetic piece 9;

[0025] First auxiliary magnetic absorbing plates 6 are provided on the inner walls of both ends of the outer ring 1 of the bearing, and the inner walls of the first auxiliary magnetic absorbing plates 6 are attracted to the outer walls of the first main magnetic absorbing plates 8.

[0026] In use, the first auxiliary magnetic absorbing piece 6 is used to magnetically attach the dust cover body 3 to the inner wall of the outer ring 1 of the bearing.

[0027] A second auxiliary magnetic absorbing piece 7 is provided on the outer wall of both ends of the inner ring 2 of the bearing. The outer wall of the second auxiliary magnetic absorbing piece 7 is attracted to the inner wall of the second main magnetic absorbing piece 9.

[0028] In use, the dust cover body 3 is magnetically attached to the outer wall of the bearing inner ring 2 by means of the second auxiliary magnetic absorbing piece 7;

[0029] The thickness of the first auxiliary magnetic absorbing piece 6 is equal to the thickness of the first main magnetic absorbing piece 8, and the thickness of the second main magnetic absorbing piece 9 is equal to the thickness of the second auxiliary magnetic absorbing piece 7.

[0030] In use, the first auxiliary magnetic absorbing piece 6 and the first main magnetic absorbing piece 8 are set to have the same thickness, and the second main magnetic absorbing piece 9 and the second auxiliary magnetic absorbing piece 7 are set to have the same thickness, so that the dust cover body 3 can be magnetically placed between the outer ring 1 and the inner ring 2 of the bearing.

[0031] In this embodiment, the main body of the dust cover is formed by first assembling a second main magnetic piece 9 and a first main magnetic piece 8 on the inner and outer walls of the dust cover body 3, respectively. This simplifies the overall structure of the dust cover and facilitates its manufacture. Then, a first auxiliary magnetic piece 6 and a second auxiliary magnetic piece 7 are respectively positioned on the inner wall of the bearing outer ring 1 and the outer wall of the bearing inner ring 2. Similarly, a first main magnetic piece 8 and a second main magnetic piece 9 are positioned on the outer and inner walls of the dust cover body 3. When the dust cover body 3 is placed between the bearing outer ring 1 and the bearing inner ring 2, the first auxiliary magnetic piece 6 attracts the first main magnetic piece 9. The main magnetic absorbing plate 8, and the second auxiliary magnetic absorbing plate 7, are attached to the second main magnetic absorbing plate 9, so that the dust cover body 3 can be magnetically installed. Pulling the dust cover body 3 can detach it between the outer ring 1 and the inner ring 2 of the bearing, so as to facilitate the disassembly and maintenance of the dust cover body 3. Finally, the dust cover body 3 is made of high-strength, corrosion-resistant, and low-friction coefficient engineering plastic to ensure that the dust cover body 3 can maintain good sealing and durability in harsh environments. At the same time, the use of engineering plastic also takes into account the lightweight requirements of the dust cover body 3, so as to reduce the additional burden of the dust cover body 3 on the bearing and equipment, thus completing the use of this miniature bearing dust cover.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A miniature bearing dust cover, characterized in that: Including the outer ring of the bearing (1); The bearing outer ring (1) is provided with a bearing inner ring (2) on its inner side. The bearing outer ring (1) is provided with an inner arc-shaped cavity (101) on its inner wall and the bearing inner ring (2) is provided with an outer arc-shaped cavity (201) on its outer wall. A ball retainer (4) is provided between the outer arc cavity (201) and the inner arc cavity (101). A plurality of ball bodies (5) are provided on the inner side of the ball retainer (4). The outer walls on both sides of the ball bodies (5) respectively contact the inner walls of the inner arc cavity (101) and the outer arc cavity (201). Dust cover bodies (3) are installed at both ends of the ball retainer (4). The outer wall of the dust cover body (3) contacts the inner wall of the outer ring (1) of the bearing, and the inner wall of the dust cover body (3) contacts the outer wall of the inner ring (2) of the bearing. The dust cover body (3) is made of engineering plastic.

2. The miniature bearing dust cover according to claim 1, characterized in that: The dust cover body (3) is provided with a first main magnetic absorbing piece (8) on its outer wall, and the first main magnetic absorbing piece (8) is arranged in a ring structure.

3. The miniature bearing dust cover according to claim 1, characterized in that: The inner wall of the dust cover body (3) is provided with a second main magnetic piece (9), which is arranged in a ring structure.

4. A miniature bearing dust cover according to claim 2, characterized in that: The inner walls at both ends of the outer ring (1) of the bearing are provided with first auxiliary magnetic plates (6), and the inner wall of the first auxiliary magnetic plate (6) is attracted to the outer wall of the first main magnetic plate (8).

5. A miniature bearing dust cover according to claim 3, characterized in that: The outer walls of both ends of the bearing inner ring (2) are provided with second auxiliary magnetic plates (7), and the outer walls of the second auxiliary magnetic plates (7) are attracted to the inner walls of the second main magnetic plates (9).

6. A miniature bearing dust cover according to claim 4, characterized in that: The thickness of the first auxiliary magnetic absorbing piece (6) is equal to the thickness of the first main magnetic absorbing piece (8).

7. A miniature bearing dust cover according to claim 5, characterized in that: The thickness of the second main magnetic absorbing piece (9) is equal to the thickness of the second auxiliary magnetic absorbing piece (7).

Images