Bearing sealing ring and bearing applying same

Abstract

The utility model relates to the technical field of bearing accessories, in particular to a bearing sealing ring and a bearing applying the same, the bearing sealing ring comprises a sealing main body, an inner lip and an outer lip, one end of the sealing main body protrudes to form a mounting part, and the inner lip and the outer lip are integrally connected to the end, away from the mounting part, of the sealing main body; the distance between the tail end of the inner lip and the sealing body is smaller than that between the tail end of the outer lip and the sealing body, and the included angle between the inner lip and the sealing body in the length direction is smaller than that between the outer lip and the sealing body in the length direction. The bearing comprises the bearing sealing ring and further comprises an inner ring and an outer ring, a gap exists between the inner ring and the outer ring to form a to-be-sealed area, the bearing sealing ring is in interference fit with the to-be-sealed area, the inner lip and the outer lip abut against the inner ring, an installation ring groove is formed in the outer ring, and the installation piece is clamped in the installation ring groove. The sealing ring has the effect of improving the sealing effect of the sealing ring.

Description

Technical Field

[0001] The present application relates to the technical field of bearing accessories, and in particular to a bearing sealing ring and a bearing using the same. Background Art

[0002] With the continuous development of current industry, the automobile industry is developing rapidly, and there have been great progress in the research and production of automobile bearings.

[0003] During the processing and installation of bearings, the sealing of the inner and outer rings of the bearings is particularly important. Because there are retaining frames and steel balls between the inner and outer rings of the bearings, there is a certain gap between the two. However, in order to ensure that the bearings can be waterproof and prevent foreign matter in actual use, a sealing ring is generally installed between the inner and outer rings of the bearings.

[0004] A Chinese utility model with announcement number CN201896866U discloses an idler bearing, which includes an outer ring, an inner ring and a sealing ring arranged between the outer ring and the inner ring, wherein the sealing ring is a double-lip structure, the outer lip is located on the outside, and is used to block water and foreign matter from entering the interior of the bearing, and the inner lip is close to the interior of the bearing, and is used to achieve sealing and prevent the smooth grease of the inner lip seal from leaking out.

[0005] like Figure 1 As shown, the sealing ring in the current technology has the following defects: the inner lip is longer than the outer lip, and the angle between the inner lip and the vertical direction is also greater than the angle between the outer lip and the vertical direction. At the same time, the inner lip is arranged toward the inside of the bearing. This causes the inner lip that first enters the bearing and fits the inner ring of the bearing to bend toward the outer lip due to length and angle problems under the action of friction when the sealing ring is installed on the bearing. In this way, when the sealing ring is used for a long time for sealing, the other parts of the sealing ring outside the bending point have the potential to move outward due to the bending of the inner lip, thereby reducing the sealing and firmness. Utility Model Content

[0006] In order to improve the sealing effect of the sealing ring, the present application provides a bearing sealing ring and a bearing using the same.

[0007] In a first aspect, the present application provides a bearing sealing ring, which adopts the following technical solution:

[0008] A bearing sealing ring comprises a sealing body, an inner lip and an outer lip, wherein one end of the sealing body is raised to form a mounting piece, and the inner lip and the outer lip are integrally connected to one end of the sealing body away from the mounting piece, wherein the distance between the end of the inner lip and the sealing body is smaller than the distance between the end of the outer lip and the sealing body, and the angle between the inner lip and the sealing body in the length direction is smaller than the angle between the outer lip and the sealing body in the length direction.

[0009] In some of the embodiments, the thickness of the inner lip is greater than the thickness of the outer lip.

[0010] In some embodiments, the inner lip includes a first portion and a second portion, an angle is formed between the first portion and the second portion, the first portion is close to the sealing body, and an end surface of the second portion away from the first portion is a plane and is perpendicular to the length direction of the sealing body.

[0011] In some of the embodiments, a grease storage groove is opened on the sealing body, and the grease storage groove corresponds to a first opening on the sealing body, and the first opening is located on a side of the sealing body close to the inner lip.

[0012] In some embodiments, the sealing body, the inner lip and the outer lip are all made of deformable elastic materials.

[0013] In a second aspect, the present application provides a bearing, which adopts the following technical solution:

[0014] A bearing comprises the above-mentioned bearing sealing ring, and also comprises an inner ring and an outer ring, wherein there is a gap between the inner ring and the outer ring to form an area to be sealed, and the bearing sealing ring is interference fit on the area to be sealed, wherein the inner lip and the outer lip abut against the inner ring, and a mounting ring groove is provided on the outer ring, and the mounting piece is clamped in the mounting ring groove.

[0015] In some of the embodiments, the outer ring includes, from the outside to the inside, a first ring portion, a second ring portion, and a third ring portion that are integrally connected, wherein the thickness of the first ring portion is smaller than the thickness of the third ring portion and larger than the thickness of the second ring portion, and the mounting ring groove is formed by the thickness difference between the first ring portion, the second ring portion, and the third ring portion, and the mounting piece is arranged to be inclined toward the outside.

[0016] In some embodiments, a connection between the first ring portion and the second ring portion is an inclined plane.

[0017] The configuration provided by the embodiments of the present application has the following technical effects:

[0018] Different from the current technology, this application reduces the distance between the inner lip and the sealing body, and at the same time specifically increases the distance between the outer lip and the sealing body, so that when the sealing ring is sleeved on the subsequent bearing, the main sealing effect is reflected on the outer lip, and at the same time, the deformation during the installation process acts on the outer lip. Because the installation deformation direction is outward and the outer lip is also on the outside, it will not deform in the opposite direction of the installation direction, ensuring that the sealing performance will not be affected. At the same time, increasing the angle between the outer lip and the length direction of the sealing body can make the outer lip have more area to abut against the inner ring of the subsequent bearing when it is deformed during the installation process, thereby improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional schematic diagram of a current bearing seal ring during installation in the related art.

[0020] Figure 2 It is a cross-sectional schematic diagram of a bearing sealing ring in an embodiment of the present application.

[0021] Figure 3 It is a cross-sectional schematic diagram of a bearing in an embodiment of the present application.

[0022] Figure 4 Schematic diagram of the cross section of the outer ring in the embodiment of the present application.

[0023] Explanation of the accompanying drawings: 1. Bearing sealing ring; 2. Sealing body; 3. Inner lip; 31. First part; 32. Second part; 4. Outer lip; 5. Mounting piece; 6. Grease storage tank; 7. First opening; 8. Inner ring; 9. Outer ring; 91. First ring part; 92. Second ring part; 93. Third ring part; 10. Mounting ring groove. DETAILED DESCRIPTION

[0024] It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as there is no conflict between them.

[0025] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples.

[0027] The embodiment of the present application discloses a bearing sealing ring 1.

[0028] like Figure 2 As shown, a bearing seal ring 1 comprises a seal body 2 , an inner lip 3 and an outer lip 4 .

[0029] The sealing body 2 is a circular ring structure, and one end surface thereof is convex to form a mounting member 5. The mounting member 5 is also annular and is used for matching and mounting with a subsequent bearing structure.

[0030] The inner lip 3 and the outer lip 4 are integrally connected to the end surface of the sealing body 2 away from the mounting member 5, and the outer lip 4 and the inner lip 3 are also annular structures. It should be noted that the "inside" and "outside" here represent the positional relationship related to the positional relationship with the bearing after installation. When the bearing seal ring 1 is installed with other parts of the bearing, the inner lip 3 corresponds to the inner side of the bearing, and the outer lip 4 corresponds to the outer side of the bearing.

[0031] The distance between the end of the inner lip 3 and the sealing body 2 is smaller than the distance between the end of the outer lip 4 and the sealing body 2 , and the angle between the inner lip 3 and the sealing body 2 in the length direction is smaller than the angle between the outer lip 4 and the sealing body 2 in the length direction.

[0032] Through the above-mentioned setting, different from the current technology, the present application reduces the distance between the inner lip 3 and the sealing body 2, and at the same time specifically increases the distance between the outer lip 4 and the sealing body 2, so that when the sealing ring is sleeved on the subsequent bearing, the main sealing effect is reflected on the outer lip 4, and at the same time, the deformation during the installation process acts on the outer lip 4. Because the installation deformation direction is outward, and the outer lip 4 is also on the outside, it will not deform in the opposite direction of the installation direction, ensuring that the sealing will not be affected. At the same time, increasing the angle between the outer lip 4 and the sealing body 2 in the length direction can make the outer lip 4 have more area to abut against the inner ring 8 of the subsequent bearing when it is deformed during the installation process, thereby improving the sealing effect.

[0033] In other embodiments, the thickness of the inner lip 3 is greater than that of the outer lip 4. In order to prevent the inner lip 3 from bending and deforming in the opposite direction of the installation direction and thus affecting the sealing performance, the thickness of the inner lip 3 is increased to improve its own support, and the possibility of the inner lip 3 bending and deforming is greatly reduced. At the same time, the thickness of the outer lip 4 in the present application is also increased compared to the thickness of the outer lip 4 in the current technology. As the thickness increases, the resilience after deformation will also increase accordingly. This resilience acts on the inner ring 8 of the subsequent bearing, which can better make the sealing ring fit tightly against the inner ring 8 of the bearing and improve the sealing effect.

[0034] In other embodiments, the inner lip 3 includes a first portion 31 and a second portion 32, and there is an angle between the first portion 31 and the second portion 32. The first portion 31 and the second portion 32 are an integrally connected structure, and the angle between the first portion 31 and the second portion 32 makes the inner lip 3 a bent structure as a whole.

[0035] The first part 31 is close to the sealing body 2, and there is an inward angle between the first part 31 and the sealing body 2 in the length direction, and the angle can reduce the deformation of the inner lip 3 bending outward during the installation of the sealing ring. The end face of the second part 32 away from the first part 31 is a plane, which is used to abut against the inner ring 8 of the bearing. The plane is perpendicular to the length direction of the sealing body 2. The second part 32 is set as a plane, which can effectively increase the contact area with the inner ring 8 of the bearing. The larger the contact area, the greater the friction, the better the sealing effect, and the sealing ring is not easy to fall off.

[0036] In other embodiments, a grease storage groove 6 is provided on the sealing body 2, and the grease storage groove 6 is used to place grease for lubricating the steel balls in the bearing. The grease storage groove 6 has a first opening 7 corresponding to the sealing body 2, and the first opening 7 is located on a side of the sealing body 2 close to the inner lip 3, and faces the inside of the bearing.

[0037] During the processing and use of the bearing, it is necessary to apply grease to the steel balls inside the bearing to improve the lubrication during use. In the current technology, grease is generally added directly to the inside of the bearing manually during processing, and the process is relatively cumbersome. Therefore, after the grease storage groove 6 is set, the grease can be directly added to the groove. When the sealing ring is installed, the lubrication of the steel balls can be directly achieved.

[0038] In other embodiments, the sealing body 2, the inner lip 3 and the outer lip 4 are all made of elastic materials, and the entire sealing ring can be deformed, which can facilitate installation on the one hand, and achieve interference fit through the deformation of the sealing ring on the other hand, thereby improving the sealing effect.

[0039] like Figure 3 and Figure 4As shown, the present application also discloses a bearing, which includes the above-mentioned bearing sealing ring 1, and also includes an inner ring 8 and an outer ring 9.

[0040] The inner ring 8 and the outer ring 9 are both annular structures, with a gap between them for installing the steel balls and the cage that carries the steel balls. The sealing ring is used to seal the gap between the inner ring 8 and the outer ring 9, that is, the area to be sealed.

[0041] The bearing seal ring 1 is interference fit in the sealing area. The inner lip 3 and the outer lip 4 correspond to the inner ring 8 and abut against the inner ring 8, while the outer ring 9 is engaged with the mounting member 5 through the mounting ring groove 10 provided on the outer ring 9 to achieve installation.

[0042] During installation, the inner ring of the bearing sealing ring 1 corresponds to the outer lip 4 and the inner lip 3, and the outer ring of the bearing sealing ring 1 corresponds to the mounting piece 5. The bearing sealing ring 1 is clamped in the gap between the inner ring 8 and the outer ring 9 of the bearing, and the mounting piece 5 is clamped into the mounting ring groove 10. The inner lip 3 and the outer lip 4 are respectively pressed against the inner ring 8 through friction and corresponding deformation, thereby achieving sealing of the bearing.

[0043] In other embodiments, the outer ring 9 includes, from the outside to the inside, a first ring portion 91, a second ring portion 92, and a third ring portion 93 that are integrally connected, wherein the thickness of the first ring portion 91 is less than the thickness of the third ring portion 93 and greater than the thickness of the second ring portion 92. The mounting ring groove 10 is formed on the outer ring 9 by the thickness difference of the above three ring portions.

[0044] In order to facilitate installation, the mounting member 5 is tilted outward. In this way, when the bearing seal ring 1 is close to the area to be sealed, the mounting member 5 is linearly abutted against the first ring portion 91 with a medium thickness. The bearing seal ring 1 is pressed hard, and the mounting member 5 is deformed to tilt outward, thereby entering the second ring portion 92 with the smallest thickness. The third ring portion 93 with the largest thickness serves to position and abut the mounting member 5, thereby preventing the bearing seal ring 1 from being pressed into the wrong position during the installation process.

[0045] In other embodiments, the connection between the first ring portion 91 and the second ring portion 92 is an inclined plane.

[0046] Because the thickness of the first ring portion 91 is greater than that of the second ring portion 92, the inclined plane between the two faces the inner ring 8. In this way, when the bearing needs to be maintained or repaired and the bearing sealing ring 1 needs to be removed, the inclined surface can allow the mounting part 5 to be smoothly removed. Secondly, when the mounting part 5 is clamped in the mounting ring groove 10, the deformed mounting part 5 can also be smoothly restored.

[0047] The implementation principle is:

[0048] Different from the current technology, the present application reduces the distance between the inner lip 3 and the sealing body 2, and at the same time specifically increases the distance between the outer lip 4 and the sealing body 2, so that when the sealing ring is sleeved on the subsequent bearing, the main sealing effect is reflected on the outer lip 4, and at the same time, the deformation during the installation process acts on the outer lip 4. Because the installation deformation direction is outward, and the outer lip 4 is also on the outside, it will not deform in the opposite direction of the installation direction, ensuring that the sealing will not be affected. At the same time, increasing the angle between the outer lip 4 and the sealing body 2 in the length direction can make the outer lip 4 have more area to abut against the inner ring 8 of the subsequent bearing when it is deformed during the installation process, thereby improving the sealing effect.

[0049] It should be understood that although the steps in the flowchart of the accompanying drawings are shown in sequence according to the instructions of the arrows, these steps are not necessarily performed in the order indicated by the arrows. Unless otherwise clearly stated in this document, the execution of these steps is not strictly limited in order and can be performed in other orders.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bearing sealing ring, characterized in that: The invention comprises a sealing body (2), an inner lip (3) and an outer lip (4), wherein one end of the sealing body (2) is raised to form a mounting member (5), and the inner lip (3) and the outer lip (4) are integrally connected to one end of the sealing body (2) away from the mounting member (5), wherein the distance between the end of the inner lip (3) and the sealing body (2) is smaller than the distance between the end of the outer lip (4) and the sealing body (2), and the angle between the inner lip (3) and the sealing body (2) in the length direction is smaller than the angle between the outer lip (4) and the sealing body (2) in the length direction.

2. The bearing sealing ring according to claim 1, characterized in that: The thickness of the inner lip (3) is greater than the thickness of the outer lip (4).

3. The bearing sealing ring according to claim 2, characterized in that: The inner lip (3) comprises a first portion (31) and a second portion (32), wherein an angle is formed between the first portion (31) and the second portion (32), wherein the first portion (31) is close to the sealing body (2), and an end surface of the second portion (32) away from the first portion (31) is a plane and is perpendicular to the length direction of the sealing body (2).

4. The bearing sealing ring according to claim 1, characterized in that: The sealing body (2) is provided with a grease storage groove (6), the grease storage groove (6) corresponding to a first opening (7) on the sealing body (2), and the first opening (7) is located on a side of the sealing body (2) close to the inner lip (3).

5. The bearing sealing ring according to claim 1, characterized in that: The sealing body (2), the inner lip (3) and the outer lip (4) are all made of deformable elastic material.

6. A bearing, characterized in that: The bearing sealing ring (1) comprises a bearing sealing ring (1) as claimed in any one of claims 1 to 5, and further comprises an inner ring (8) and an outer ring (9), wherein a gap exists between the inner ring (8) and the outer ring (9) to form an area to be sealed, and the bearing sealing ring (1) is interference fit on the area to be sealed, wherein the inner lip (3) and the outer lip (4) abut against the inner ring (8), and a mounting ring groove (10) is provided on the outer ring (9), and the mounting member (5) is snap-fitted into the mounting ring groove (10).

7. The bearing according to claim 6, characterized in that: The outer ring (9) comprises, from the outside to the inside, a first ring portion (91), a second ring portion (92) and a third ring portion (93) which are integrally connected, wherein the thickness of the first ring portion (91) is smaller than the thickness of the third ring portion (93) and larger than the thickness of the second ring portion (92), the mounting ring groove (10) is formed by the difference in thickness among the first ring portion (91), the second ring portion (92) and the third ring portion (93), and the mounting member (5) is arranged to be inclined toward the outside.

8. The bearing according to claim 7, characterized in that: The connection between the first ring portion (91) and the second ring portion (92) is an inclined plane.

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