Rolling bearing

Abstract

The utility model discloses a kind of rolling bearings, including outer ring, multiple ball bearings, retainer, inner ring and two sealing mechanisms, wherein, multiple ball bearings are all set in the pocket of retainer, and rolling is set between the raceway of outer ring and inner ring.The utility model is installed in bearing outer ring by clamping assembly, and cooperation dismounting assembly can realize the quick dismounting of sealing mechanism, when dismounting, only need to pull the connecting column by pull ring, and then make push plate push clamping seat, remove the clamping state of clamping seat and outer ring, sealing assembly can be quickly taken out from outer ring, compared with the traditional interference fit design, without using complex press fitting and pry operation, simplify the dismounting process of sealing mechanism, improve the dismounting and maintenance efficiency of bearing.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to a rolling bearing. Background Technology

[0002] A rolling bearing is a precision mechanical component that converts sliding friction between relatively moving parts into rolling friction to reduce frictional resistance and wear. It typically consists of an inner ring, outer ring, rolling elements, a cage, and a sealing mechanism. The sealing mechanism is installed at the end face gap between the inner and outer rings, and its function is to prevent external impurities from entering the bearing and to avoid internal grease leakage. It is suitable for applications requiring high cleanliness. Because the lip of the sealing ring has a rigid contact with the bearing's inner ring, long-term friction will cause the lip to wear, thin, and even crack, thus requiring replacement.

[0003] Currently, most rolling bearings in existing technology adopt a contact-type seal structure. The connection between the seal and the outer ring of the bearing is mostly an interference fit design. During installation, the seal is directly pressed into the special mounting groove of the outer ring. When replacing it, the bearing must first be completely disassembled from the shaft system or bearing housing. Then, the worn seal is removed by prying with tools. Finally, the new seal is pressed into place. The entire replacement process is complicated, involves many steps, and is time-consuming, resulting in significantly low efficiency in bearing disassembly, assembly, and maintenance. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this utility model is to propose a rolling bearing that, through a snap-fit ​​installation sealing mechanism design, enables quick disassembly and assembly of the sealing mechanism. During the disassembly and assembly process, there is no need to use complex pressing and prying operations, which simplifies the replacement process of the sealing ring and improves the efficiency of bearing disassembly, assembly and maintenance.

[0006] To achieve the above objectives, this utility model proposes a rolling bearing, comprising an outer ring, a plurality of balls, a cage, an inner ring, and two sealing mechanisms. The plurality of balls are disposed within pockets of the cage and roll between the raceways of the outer and inner rings. The two sealing mechanisms are symmetrically fitted to the two end faces of the inner ring and are both engaged within the outer ring. Each sealing mechanism includes a sealing component, multiple sets of engaging components, and a disassembly component. The multiple sets of engaging components are disposed on the sealing component and are arranged in a ring around the axial direction of the outer ring. The disassembly component is sleeved on the outside of the sealing component and can move along the axial direction of the outer ring, abutting against the movable end of the engaging component.

[0007] In addition, the rolling bearing proposed above according to this utility model may also have the following additional technical features: Specifically, the sealing assembly includes a sealing gasket, a sealing ring, an outer lip, and an inner lip. The outer lip is located on one side of the sealing ring, the inner lip is located on the inner wall of the sealing ring, and the sealing gasket is fitted over the outer lip and connected to the sealing ring.

[0008] Specifically, each set of the snap-fit ​​assembly includes a snap-fit ​​base, a guide post, a first elastic element, and a guide seat. The guide post is disposed inside the guide seat, the snap-fit ​​base is sleeved on the outside of the guide post and slidably disposed inside the guide seat, and the first elastic element is sleeved on the outside of the guide post, with its two ends abutting against the snap-fit ​​base and the guide seat, respectively.

[0009] Specifically, the disassembly assembly includes two connecting posts, multiple push plates, a pushing ring, and a second elastic member. The two connecting posts are symmetrically arranged on the pushing ring, and each end of the connecting post is provided with a pull ring. The multiple push plates are all arranged on the pushing ring and are distributed in a ring around the axial direction of the pushing ring. The end of the second elastic member abuts against the pushing ring.

[0010] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: This invention uses a snap-fit ​​assembly to snap the sealing component onto the outer ring of the bearing. Combined with a disassembly assembly, it enables rapid disassembly of the sealing mechanism. During disassembly, simply pull the connecting column with the pull ring, which in turn causes the push plate to push the snap-fit ​​seat, releasing the snap-fit ​​between the seat and the outer ring. This allows the sealing component to be quickly removed from the outer ring. Compared to traditional interference fit designs, this invention eliminates the need for complex pressing and prying operations when replacing the sealing mechanism in rolling bearings, simplifying the disassembly and assembly process and improving the efficiency of bearing disassembly, assembly, and maintenance.

[0011] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0012] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which: Figure 1 This is a schematic diagram of the overall structure of the rolling bearing of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is a schematic diagram of the sealing mechanism in this utility model; Figure 4This is a schematic diagram of the sealing component structure in this utility model; Figure 5 This is a cross-sectional view of the present invention; Figure 6 This utility model Figure 5 Enlarged view of area A in the image; Figure 7 This is a schematic diagram of the snap-fit ​​assembly structure in this utility model; Figure 8 This is a schematic diagram of the disassembly component structure in this utility model.

[0013] As shown in the figure: 1. Outer ring; 2. Ball bearings; 3. Cage; 4. Inner ring; 5. Sealing assembly; 51. Sealing gasket; 52. Sealing ring; 53. Outer lip; 54. Inner lip; 6. Snap-fit ​​assembly; 61. Snap-fit ​​base; 62. Guide post; 63. First elastic element; 64. Guide seat; 7. Disassembly components; 71. Pull ring; 72. Connecting post; 73. Push plate; 74. Push ring; 75. Second elastic element. Detailed Implementation

[0014] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0015] The rolling bearing of the present invention will now be described with reference to the accompanying drawings.

[0016] like Figures 1-8 As shown, a rolling bearing according to an embodiment of the present invention includes an outer ring 1, a plurality of balls 2, a cage 3, an inner ring 4, and two sealing mechanisms. The plurality of balls 2 are all disposed in the pockets of the cage 3 and are rolled between the raceways of the outer ring 1 and the inner ring 4.

[0017] It should be noted that a raceway is provided between the outer ring 1 and the inner ring 4 for the rolling balls 2 to roll, which can keep the rolling balls 2 stable during rolling, reduce friction and wear. The cage 3 evenly separates the rolling balls 2 to prevent them from colliding and rubbing against each other during rolling, thus ensuring the smooth operation of the rolling bearing.

[0018] Two sealing mechanisms are symmetrically fitted to the two end faces of the inner ring 4 and are both snapped into the outer ring 1. Each sealing mechanism includes a sealing component 5, multiple sets of snapping components 6 and a disassembly component 7. The multiple sets of snapping components 6 are all set on the sealing component 5 and are distributed in a ring around the axial direction of the outer ring 1. The disassembly component 7 is sleeved on the outside of the sealing component 5 and can move along the axial direction of the outer ring 1. The disassembly component 7 abuts against the movable end of the snapping component 6.

[0019] It should be noted that the sealing mechanism can effectively prevent external impurities from entering the bearing and avoid internal grease leakage. The sealing mechanism is installed inside the outer ring 1 by snap-fit. Compared with the traditional interference fit design, it does not require complicated pressing and prying operations, which simplifies the disassembly and assembly process of the sealing mechanism, saves a lot of time and labor costs, and improves the efficiency of bearing disassembly, assembly and maintenance.

[0020] The sealing assembly 5 is used to seal the inside of the rolling bearing to prevent external impurities from entering and internal grease from leaking. It is installed in the mounting groove inside the outer ring 1 by multiple snap-fit ​​assemblies 6. The snap-fit ​​assemblies 6 can be operated by the disassembly assembly 7 to achieve quick disassembly and installation of the sealing assembly 5.

[0021] In one embodiment of this utility model, such as Figures 3-6 As shown, the sealing assembly 5 includes a sealing gasket 51, a sealing ring 52, an outer lip 53, and an inner lip 54. The outer lip 53 is disposed on one side of the sealing ring 52, the inner lip 54 is disposed on the inner wall of the sealing ring 52, and the sealing gasket 51 is sleeved on the outside of the outer lip 53 and connected to the sealing ring 52.

[0022] It should be noted that both the outer lip 53 and the inner lip 54 are integrally formed with the sealing ring 52. The outer lip 53 fits into the sealing groove inside the outer ring 1, and the inner lip 54 fits tightly into the outer wall of the inner ring 4, thereby forming a sealing structure to prevent external impurities from entering the bearing and to prevent internal grease from leaking.

[0023] The outer wall of the sealing ring 52 fits into the mounting groove inside the outer ring 1, and the sealing gasket 51 fits into the inner wall of the mounting groove. Thus, the sealing performance between the sealing assembly 5 and the outer ring 1 can be enhanced through the sealing gasket 51.

[0024] In one embodiment of this utility model, such as Figures 5-7 As shown, each set of snap-fit ​​components 6 includes a snap-fit ​​base 61, a guide post 62, a first elastic member 63, and a guide seat 64. The guide post 62 is disposed inside the guide seat 64, the snap-fit ​​base 61 is sleeved on the outside of the guide post 62 and slidably disposed inside the guide seat 64, and the first elastic member 63 is sleeved on the outside of the guide post 62, with its two ends abutting against the snap-fit ​​base 61 and the guide seat 64 respectively.

[0025] It should be noted that the guide seat 64 is fixedly installed on the outer wall of the sealing ring 52, the guide post 62 is fixedly installed on the inner wall of the guide seat 64, the first elastic element 63 is a spring, and the upper surface of the snap-fit ​​seat 61 is provided with an inclined surface. Thus, during the installation process, the snap-fit ​​seat 61 contacts the outer ring 1 through the inclined surface, which can push the snap-fit ​​seat 61 to slide inside the guide seat 64.

[0026] The inner wall of the outer ring 1 is provided with a slot that matches the snap-fit ​​seat 61. When the snap-fit ​​seat 61 moves to the position that matches the slot, the snap-fit ​​seat 61 will snap into the slot under the action of the first elastic member 63, thereby achieving the snap-fit ​​fixation between the sealing component 5 and the outer ring 1.

[0027] In one embodiment of this utility model, such as Figure 8 As shown, the disassembly assembly 7 includes two connecting posts 72, multiple push plates 73, a push ring 74, and a second elastic member 75. The two connecting posts 72 are symmetrically arranged on the push ring 74, and their ends are provided with pull rings 71. The multiple push plates 73 are all arranged on the push ring 74 and are distributed in a ring around the axial direction of the push ring 74. The end of the second elastic member 75 abuts against the push ring 74.

[0028] It should be noted that the push ring 74 is sleeved on the sealing ring 52, the second elastic element 75 is a spring, which is sleeved on the sealing ring 52, and its two ends abut against the push ring 74 and the annularly distributed guide seat 64 respectively. The push plate 73 and the push ring 74 are an integral structure. The end of the connecting column 72 away from the push ring 74 passes through the sealing ring 52 and is slidably connected to the sealing ring 52. The push plate 73 abuts against the inclined surface of the snap-fit ​​seat 61.

[0029] The pull ring 71 is used to pull the connecting post 72. Its ring structure can be adapted to hook-shaped tools, such as hooks or pull hooks, to facilitate the operator to apply pulling force.

[0030] In practical applications, when the sealing mechanism needs to be disassembled, the connecting column 72 is pulled by the pull ring 71, which in turn drives the push ring 74 to move along the axial direction of the sealing ring 52. During the movement of the push ring 74, the push plate 73 pushes the inclined surface of the snap-fit ​​seat 61, thereby pressing the snap-fit ​​seat 61 into the guide seat 64, so that the snap-fit ​​seat 61 is disengaged from the snap-fit ​​groove on the inner wall of the outer ring 1. At this time, the position restriction of the sealing assembly 5 is released, and it can be taken out from the outer ring 1, realizing the quick disassembly of the sealing mechanism for replacement or maintenance.

[0031] When a new sealing mechanism needs to be installed, first place the sealing component 5 in the mounting groove inside the outer ring 1, so that the inclined surface of the snap-fit ​​seat 61 contacts the outer ring 1 and aligns with the snap-fit ​​groove inside the outer ring 1. Then push the sealing ring 52, and the sealing ring 52 moves along the axial direction of the outer ring 1. At this time, the snap-fit ​​seat 61 is under force and slides along the guide post 62 in the guide seat 64. At the same time, the first elastic element 63 is compressed. After the sealing ring 52 is installed in place, the snap-fit ​​seat 61 moves to the position corresponding to the snap-fit ​​groove. At this time, under the push of the first elastic element 63, the snap-fit ​​seat 61 snaps into the snap-fit ​​groove, realizing the snap-fit ​​fixation between the sealing component 5 and the outer ring 1.

[0032] At this time, the outer lip 53 fits into the sealing groove inside the outer ring 1, the inner lip 54 fits tightly into the outer wall of the inner ring 4, and the sealing gasket 51 fits into the inner wall of the mounting groove, thus forming a good sealing structure to prevent external impurities from entering the bearing and internal grease from leaking.

[0033] In summary, the rolling bearing of this utility model uses a snap-fit ​​assembly to snap the sealing component onto the outer ring of the bearing. Combined with a disassembly assembly, this allows for rapid disassembly of the sealing mechanism. During disassembly, simply pull the connecting column with the pull ring, which in turn causes the push plate to push the snap-fit ​​seat, releasing the snap-fit ​​between the seat and the outer ring. This allows the sealing component to be quickly removed from the outer ring. Compared to traditional interference fit designs, the rolling bearing of this utility model eliminates the need for complex pressing and prying operations when replacing the sealing mechanism, simplifying the disassembly and assembly process and improving the efficiency of bearing disassembly, assembly, and maintenance.

[0034] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0036] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A rolling bearing, characterized in that, It includes an outer ring, multiple balls, a cage, an inner ring, and two sealing mechanisms, among which, The plurality of balls are disposed in the pockets of the cage and are rotatably disposed between the raceways of the outer ring and the inner ring; The two sealing mechanisms are symmetrically fitted to the two end faces of the inner ring, and are both snapped into the outer ring; Each of the sealing mechanisms includes a sealing assembly, multiple sets of snap-fit ​​assemblies, and a disassembly assembly, wherein... Multiple sets of the aforementioned snap-fit ​​components are disposed on the sealing component and are arranged in a ring around the axial direction of the outer ring; The disassembly assembly is sleeved on the outside of the sealing assembly and can move axially along the outer ring; The disassembly component abuts against the movable end of the snap-fit ​​component.

2. The rolling bearing according to claim 1, characterized in that, The sealing assembly includes a sealing gasket, a sealing ring, an outer lip, and an inner lip, wherein... The outer lip is located on one side of the sealing ring; The inner lip opening is disposed on the inner wall of the sealing ring; The sealing gasket is fitted over the outside of the outer lip and is connected to the sealing ring.

3. The rolling bearing according to claim 1, characterized in that, Each set of the snap-fit ​​assembly includes a snap-fit ​​base, a guide post, a first elastic element, and a guide seat, wherein... The guide post is disposed within the guide seat; The snap-fit ​​seat is sleeved on the outside of the guide post and slidably disposed inside the guide seat; The first elastic element is sleeved on the outside of the guide post, and its two ends abut against the snap-fit ​​seat and the guide seat respectively.

4. The rolling bearing according to claim 1, characterized in that, The disassembly assembly includes two connecting posts, multiple push plates, a pushing ring, and a second elastic element, wherein... The two connecting posts are symmetrically arranged on the push ring, and each end of the post is provided with a pull ring. Multiple push plates are disposed on the push ring and are distributed in a ring around the axis of the push ring; The end of the second elastic element abuts against the push ring.

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