Waterproof structure of bearing
By introducing an air intake channel and a guide groove into the bearing structure of the polishing equipment, the problem of insufficient gas pressure was solved, resulting in better waterproofing and preventing polishing fluid from entering the bearing.
Patent Information
- Application Number
- CN202520761388.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-04-21
AI Technical Summary
In existing polishing equipment, the pressure of gas flowing outward in the bearing waterproof structure is insufficient, resulting in poor waterproofing performance.
A waterproof bearing structure was designed, including an air intake assembly, a main shaft, a bearing cover, and a distribution ring. Through the combination of an air intake channel, a waterproof gap, and a guide groove, the gas flows in different directions in the waterproof gap, forming an air film and being discharged outward through the guide groove, increasing the gas pressure and preventing polishing fluid from entering the bearing.
It effectively enhances the waterproof and airtightness of the bearing, increases the pressure of gas flowing outward, prevents polishing fluid from entering, and enhances the waterproof effect.
Smart Images
Figure CN223839569U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bearing technology, and in particular to a waterproof bearing structure. Background Technology
[0002] Polishing equipment is the main equipment for processing optical lenses. During the polishing process, polishing slurry will drip. To prevent the polishing slurry from entering the bearing structure, the bearings of existing polishing equipment generally adopt an airtight and waterproof structure. An air inlet is provided on the bearing, through which gas enters the bearing structure and then diffuses along the air path. The air path generally includes an inward air path and an outward air path. The inward air path is used to introduce air into the gap between the bearing spindle and other structures to avoid friction between the spindle and other structures. The outward air path is used to guide the airflow outward to disperse the polishing slurry and prevent it from splashing into the bearing. However, the existing air path diverts most of the gas into the bearing, resulting in insufficient pressure of the outward-flowing gas and poor waterproofing effect. Utility Model Content
[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art and to provide a waterproof bearing structure.
[0004] The bearing waterproof structure according to an embodiment of the present invention includes an air intake assembly, a main shaft, a bearing cover, and a distribution ring. The distribution ring is sleeved on the main shaft, and the bearing cover is disposed on the top of the main shaft. A waterproof gap is formed between the top of the distribution ring and the bottom of the bearing cover. An anti-friction gap is formed between the side of the distribution ring and the main shaft. The waterproof gap and the anti-friction gap are in communication. An air intake channel is provided on the air intake assembly, and the air intake channel is in communication with the waterproof gap. A guide groove is provided at the bottom of the bearing cover opposite to the distribution ring. The guide groove is used to guide the airflow outward along the waterproof gap.
[0005] The bearing waterproof structure according to the present invention has at least the following beneficial effects: external gas flows into the waterproof gap through the air inlet channel. The gas has two flow directions in the waterproof gap. One direction is to flow inward along the anti-friction gap, forming an air film between the main shaft and other components, which plays a balancing role. The other direction is to flow outward. Due to the presence of the guide groove, part of the gas flowing into the bearing is blocked by the guide groove and then flows outward, thereby increasing the pressure of the outward flowing gas, effectively preventing polishing liquid from entering the bearing, and having better waterproof and airtight properties.
[0006] 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
[0007] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings;
[0008] Figure 1 It is a bearing structure mounted on a bracket;
[0009] Figure 2 This is an exploded view of the waterproof structure of the bearing;
[0010] Figure 3 This is a cross-sectional view of the waterproof structure of the bearing;
[0011] Figure 4 yes Figure 3 Enlarged structural diagram of part A in the middle;
[0012] Figure 5 yes Figure 3 A magnified view of the structure at point B in the middle section. Detailed Implementation
[0013] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0014] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0015] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0016] Reference Figures 1 to 5This utility model discloses a waterproof bearing structure, comprising: an air intake assembly, a main shaft 10, a bearing cover 20, and a distribution ring 30. The distribution ring 30 is sleeved on the main shaft 10, and the bearing cover 20 is disposed on the top of the main shaft 10. A waterproof gap 11 is formed between the top of the distribution ring 30 and the bottom of the bearing cover 20, and an anti-friction gap 12 is formed between the side of the distribution ring 30 and the main shaft 10. The waterproof gap 11 and the anti-friction gap 12 are connected. An air intake channel 13 is provided on the air intake assembly, and the air intake channel 13 is connected to the waterproof gap 11. A guide groove 21 is provided at the bottom of the bearing cover 20 opposite to the distribution ring 30. The guide groove 21 is used to guide the airflow outward along the waterproof gap 11. External gas flows into the waterproof gap 11 through the air intake channel 13. The gas has two flow directions in the waterproof gap 11. One direction is to flow inward along the anti-friction gap 12, forming an air film between the main shaft 10 and other components, which plays a balancing role. The other direction is to flow outward. Due to the presence of the guide groove 21, some of the gas flowing into the bearing is blocked by the guide groove 21 and then flows outward, thereby increasing the pressure of the outward flowing gas, effectively preventing polishing liquid from entering the bearing, and having better waterproof and airtightness.
[0017] like Figure 4 In some embodiments, the cross-section of the guide channel 21 is triangular or wedge-shaped, resulting in good flow guidance. Preferably, the cross-section of the guide channel 21 is a right-angled triangle, with the right-angled side located on the side closer to the main shaft 10, which further enhances the outward flow guidance effect.
[0018] like Figure 4 In some embodiments, the top of the distribution ring 30 is provided with a boss 31, and the bottom of the bearing cover 20 is provided with a groove 22 that mates with the boss 31. An air passage gap is formed between the boss 31 and the groove 22, which communicates with the waterproof gap 11 and the anti-friction gap 12 respectively. The groove 22 is located between the guide groove 21 and the main shaft 10. Due to the presence of the boss 31 and the groove 22, the path for gas to flow inward is increased, that is, the path for gas to flow outward is shorter than the path for gas to flow inward. Therefore, the gas will tend to flow in the direction with the shorter path, thereby further increasing the pressure of the outward flowing gas and improving the waterproof effect.
[0019] like Figure 3 and Figure 5 It also includes a drainage ring 40 connected to the edge of the bearing cover 20, and the drainage ring 40 is provided with a shielding part 41 to shield the polishing liquid and further improve the waterproof effect.
[0020] like Figure 2 and Figure 3It also includes a base 100, on which a through hole is provided, and an upward-facing annular retaining edge 110 is provided at the edge of the through hole. The spindle 10 passes through the through hole to be mounted on the base 100. The annular retaining edge 110 is located inside the shielding part 41 and the two are partially coupled to further prevent polishing liquid from flowing into the bearing structure.
[0021] like Figure 2 and Figure 3 The air intake assembly includes a support ring 51, a flange 52, and a T-shaped seat 53 connected sequentially from top to bottom. The T-shaped seat 53 is connected to the base 100, and a bearing 60 is provided between the flange 52 and the main shaft 10. Adhesive can be injected between the support ring 51 and the annular retaining edge 110 to enhance the connection between the bearing structure and the base 100 while also providing a sealing and waterproofing effect. An air intake hole 50 is provided on the side of the T-shaped seat 53. Air intake channels 13 are provided on the T-shaped seat 53, flange 52, and support ring 51, respectively, and are interconnected. The support ring 51 is fitted onto the distribution ring 30, with an air intake gap 14 between them. The air intake gap 14 is connected to both the air intake channel 13 and the waterproof gap 11. Gas flows sequentially through the air intake hole 50, air intake channel 13, and air intake gap 14 into the waterproof gap 11, and then flows inward and outward at the waterproof gap 11. Under the combined action of the guide groove 21 and the boss 31, the outward flow of gas increases, the pressure increases, and thus the waterproofing effect is improved.
[0022] It will be readily understood by those skilled in the art that the above preferred methods can be freely combined and superimposed without conflict.
[0023] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.
Claims
1. A waterproof bearing structure, comprising an air intake assembly, a main shaft (10), and a bearing cover (20), characterized in that, include: A distribution ring (30) is sleeved on the main shaft (10). A bearing cover (20) is disposed on the top of the main shaft (10). A waterproof gap (11) is formed between the top of the distribution ring (30) and the bottom of the bearing cover (20). An anti-friction gap (12) is formed between the side of the distribution ring (30) and the main shaft (10). The waterproof gap (11) and the anti-friction gap (12) are connected. An air intake channel (13) is provided on the air intake assembly. The air intake channel (13) is connected to the waterproof gap (11). A guide groove (21) is provided at the bottom of the bearing cover (20) opposite to the distribution ring (30). The guide groove (21) is used to guide the airflow outward along the waterproof gap (11).
2. The bearing waterproof structure according to claim 1, characterized in that: The cross-section of the guide channel (21) is triangular.
3. The bearing waterproof structure according to claim 1, characterized in that: The top of the distribution ring (30) is provided with a boss (31), and the bottom of the bearing cover (20) is provided with a groove (22) that mates with the boss (31). An air passage gap is formed between the boss (31) and the groove (22). The air passage gap is connected to the waterproof gap (11) and the anti-friction gap (12) respectively, and the groove (22) is located between the guide groove (21) and the main shaft (10).
4. The bearing waterproof structure according to claim 1, characterized in that: It also includes a guide ring (40) connected to the edge of the bearing cover (20), the guide ring (40) having a shielding part (41) to shield the polishing liquid.
5. The bearing waterproof structure according to claim 4, characterized in that: It also includes a base (100) with a through hole and an upward-facing annular flange (110) at the edge of the through hole. The main shaft (10) passes through the through hole and is mounted on the base (100). The annular flange (110) is located inside the shielding part (41) and the two are partially coupled.
6. The bearing waterproof structure according to claim 5, characterized in that: The air intake assembly includes a support ring (51), a flange (52), and a T-shaped seat (53) connected sequentially from top to bottom. The T-shaped seat (53) is connected to the base (100). The side of the T-shaped seat (53) is provided with an air intake hole (50). The T-shaped seat (53), the flange (52), and the support ring (51) are respectively provided with interconnected air intake channels (13). The support ring (51) is sleeved on the distribution ring (30) and there is an air intake gap (14) between them. The air intake gap (14) is connected to the air intake channel (13) and the waterproof gap (11) respectively.