A waterproof and dustproof combined sealing structure

Abstract

The utility model discloses a waterproof dustproof combined sealing structure, including sealing element and dust cover, dust cover one side open, form in C cross section space in dust cover, sealing element is embedded in C cross section space, sealing element is equipped with the lip, and the lip exposes in dust cover, sealing element is equipped with the lip foot, and the lip foot forms sealed connection in C cross section space, the utility model discloses sealing element is embedded in dust cover to form the structure whole, and the first dustproof water retaining effect is formed to dust cover through the dust cover of outside, and sealing element in dust cover inboard again mutually cooperate and form three seals, to further promote dustproof, waterproof performance, the utility model discloses through echelon type sealing to form the use performance that surpasses traditional sealing structure.

Description

Technical Field

[0001] This utility model relates to the field of bearing sealing design technology, and more specifically, to a waterproof and dustproof combined sealing structure. Background Technology

[0002] Bearings are essential components of modern machinery, primarily used to support rotating mechanical parts. Most bearings operate in complex environments, making the sealing structure on the bearing's side an indispensable part. The quality of this sealing determines the bearing's lifespan. To produce high-quality bearings, companies continuously improve the design of the sealing structure to enhance its reliability, leading to this case study. Utility Model Content

[0003] The purpose of this utility model is to address the needs of the prior art and provide a waterproof and dustproof combined sealing structure. This utility model embeds the sealing element into the dustproof cover to form a structural whole. The outer dustproof cover forms the first layer of dustproof and water-blocking effect. The sealing elements cooperate with each other on the inner side of the dustproof cover to form a third seal, thereby further improving the dustproof and waterproof performance. This utility model achieves superior performance to traditional sealing structures through a tiered sealing method.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A waterproof and dustproof combined sealing structure includes a sealing element and a dust cover. The dust cover is open on one side and has a C-shaped cross-sectional space. The sealing element is embedded in the C-shaped cross-sectional space. The sealing element has a lip that protrudes from the dust cover and a foot that forms a sealing connection within the C-shaped cross-sectional space.

[0006] Furthermore, the seal includes a metal skeleton and a sealing body, the sealing body being made of rubber material, the sealing body covering and connected to the outside of the metal skeleton, and the sealing body extending from the top of the metal skeleton to form a lip.

[0007] Furthermore, the sealing body extends downward to form a lip, the lip having a V-shaped cross-section, the bottom of the lip being a first sealing part, and the side of the lip being a second sealing part. The first sealing part is in contact with the bottom of the C-shaped cross-section space, and the second sealing part is in contact with the side wall of the C-shaped cross-section space.

[0008] Furthermore, a groove is formed in the center of the lip foot, and a coiled spring is installed in the groove.

[0009] Furthermore, the dust cover has an outer ring and an inner ring. The side end of the outer ring abuts against the waist of the sealing body, and the dust cover is connected to the inner ring of the bearing through the inner ring.

[0010] The beneficial effects of this utility model are:

[0011] This invention embeds a sealing element into a dust cover to form a structural whole. The outer dust cover provides the first layer of dust and water protection, while the sealing elements on the inner side of the dust cover work together to form multiple seals, further enhancing dust and water resistance. This invention achieves superior performance compared to traditional sealing structures through a tiered sealing method. This invention has the advantage of reliable sealing and can be applied to bearing products used in harsh environments, significantly extending the service life of bearing products. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of a waterproof and dustproof combined sealing structure in this embodiment;

[0013] Figure 2 This is a schematic diagram of a waterproof and dustproof combined sealing structure applied to a bearing in this embodiment.

[0014] Reference numerals: 1. Seal, 11. Lip, 12. Metal skeleton, 13. Seal body, 14. Lip foot, 141. Groove, 142. First sealing part, 143. Second sealing part, 15. Coil spring, 2. Dust cover, 21. C-shaped cross-section space, 22. Outer ring body, 23. Inner ring body. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1 and Figure 2 The illustrated waterproof and dustproof combined sealing structure includes a seal 1 and a dust cover 2. The dust cover 2 is open on one side, and a C-shaped cross-sectional space 21 is formed inside the dust cover 2. The seal 1 is embedded in the C-shaped cross-sectional space 21 and is inserted from the open end of the dust cover 2. Both the seal 1 and the dust cover 2 are annular components, and when connected, they form a complete sealing structure, which is then directly installed onto the bearing product. The seal 1 has a lip 11, which protrudes from the dust cover 2. Figure 2As shown, a groove is provided on the inner wall of the outer ring of the bearing. After the lip 11 is deformed, it is inserted into the groove. A sealing structure installation area is provided on the outer wall of the inner ring of the bearing. The dust cover 2 of this utility model includes an inner ring body 23. The dust cover 2 is connected to the outer wall of the inner ring of the bearing (generally a tight fit connection) through the inner ring body 23. The dust cover 2 of this utility model plays the role of the first-level dustproof and waterproof effect. The sealing element 1 of this utility model is provided with a lip foot 14. The lip foot 14 forms a sealing connection effect in the C-shaped cross-section space 21 to ensure the overall dustproof and waterproof performance of the sealing structure.

[0017] like Figure 2 As shown, the seal 1 includes a metal frame 12 and a sealing body 13. The metal frame 12 provides a certain rigidity to the seal 1. The sealing body 13 is made of rubber and covers and connects to the outside of the metal frame 12. The sealing body 13 extends from the top of the metal frame 12 to form a lip 11, which is the outer ring of the seal 1. The part of the sealing body 13 that is within the metal frame 12 is the body of the seal 1. The sealing body 13 extends downward to form a lip foot 14, which is the inner ring of the seal 1. In this invention, the lip foot 14 is designed with a V-shaped cross-section. The bottom of the lip foot 14 is set as a first sealing part 142 (that is, the bottom tip of the V-shape), and the side of the lip foot 14 is provided with a second sealing part 143 (that is, the outer hook of the lip foot 14). The first sealing part 142 is in contact with the bottom of the C-shaped cross-section space 21, and the second sealing part 143 is in contact with the side wall of the C-shaped cross-section space 21. Two sealing parts are formed by the first sealing part 142 and the second sealing part 143. The dust cover 2 has an outer ring 22, the side end of which abuts against the waist of the sealing body 13, thus providing a first layer of sealing. In this invention, the dust cover 2 serves as the primary dust and water barrier. For mud and water to enter the bearing, it must first pass through the C-shaped cross-section space 21. However, within this C-shaped cross-section space 21, the invention employs a three-tiered seal from top to bottom. The first tier is the contact between the side end of the outer ring 22 and the waist of the sealing body 13; the second tier is the second sealing part 143 of the lip 14; and the third tier is the first sealing part 142 of the lip 14. Compared to traditional sealing structures, this three-tiered seal within a small space significantly improves sealing reliability and enhances the dust and water resistance of the sealing structure. Based on actual testing, the sealing effect is at least 60% better than traditional single-layer sealing components. This invention is suitable for bearings used in harsh environments and can significantly extend the service life of bearings.

[0018] To improve sealing reliability, such as Figure 2As shown, this utility model has a groove 141 in the center of the lip foot 14, and a coil spring 15 is installed in the groove 141. The sealing member 1 is a ring-shaped product, and the groove 141 forms a groove ring. The coil spring 15 is embedded in the groove 141. Due to the limited space in the groove 141, the coil spring 15 is compressed to form an outward tension. The outward tension formed by the coil spring 15 can force the first sealing part 142 and the second sealing part 143 to form a continuous and stable contact with the inner wall of the C-shaped cross-section space 21, so as to ensure the reliability and continuity of the sealing effect.

[0019] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A waterproof and dustproof combined sealing structure, characterized in that, The device includes a seal (1) and a dust cover (2). The dust cover (2) is open on one side and has a C-shaped cross-section space (21) inside. The seal (1) is fitted into the C-shaped cross-section space (21). The seal (1) has a lip (11) that protrudes from the dust cover (2). The seal (1) also has a lip foot (14) that forms a sealing connection within the C-shaped cross-section space (21).

2. The waterproof and dustproof combined sealing structure according to claim 1, characterized in that, The sealing element (1) includes a metal skeleton (12) and a sealing body (13). The sealing body (13) is made of rubber material and covers and is connected to the outside of the metal skeleton (12). The sealing body (13) extends to the top of the metal skeleton (12) to form a lip (11).

3. The waterproof and dustproof combined sealing structure according to claim 2, characterized in that, The sealing body (13) extends downward to form a lip (14), the lip (14) has a V-shaped cross section, the bottom of the lip (14) is provided as a first sealing part (142), the side of the lip (14) is provided with a second sealing part (143), the first sealing part (142) is in contact with the bottom of the C-shaped cross section space (21), and the second sealing part (143) is in contact with the side wall of the C-shaped cross section space (21).

4. The waterproof and dustproof combined sealing structure according to claim 3, characterized in that, A groove (141) is provided in the center of the lip (14), and a coiled spring (15) is installed in the groove (141).

5. The waterproof and dustproof combined sealing structure according to claim 2, characterized in that, The dust cover (2) is provided with an outer ring body (22) and an inner ring body (23). The side end of the outer ring body (22) abuts against the waist of the sealing body (13). The dust cover (2) is connected to the inner ring of the bearing through the inner ring body (23).

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