Bearing and fan and air conditioner with same

Abstract

The utility model discloses a bearing and a fan and an air conditioner with the same. The bearing comprises a body which is provided with a cavity penetrating through the body in the preset direction; the protruding part is arranged on the wall face of the cavity, and the inner side face of the protruding part is located on the inner side of the wall face of the cavity and forms a bearing face. The bearing is used for supporting a shaft, so that jumping and friction noise can be effectively reduced, the use amount of lubricating oil is reduced, and the lubricating effect is improved.

Description

Technical Field

[0001] The utility model relates to a bearing, and also relates to a fan and an air conditioner with the bearing. Background Art

[0002] The fan in the related art uses a bearing to support the shaft. Specifically, the bearing has a mounting hole extending through the shaft along its axial direction, a portion of the shaft is assembled into the mounting hole of the bearing, and the entire wall surface of the mounting hole of the bearing contacts the shaft to support the shaft. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the present invention proposes a bearing and a fan and an air conditioner having the bearing.

[0004] The bearing of the utility model comprises: a body having a cavity passing through the body along a preset direction; and a convex portion, the convex portion is arranged on the wall surface of the cavity, and the inner side surface of the convex portion is located on the inner side of the wall surface of the cavity and constitutes a supporting surface.

[0005] By using the bearing of the utility model to support the shaft, the generation of vibration and friction noise can be effectively reduced, the amount of lubricating oil used can be reduced, and the lubrication effect can be improved.

[0006] Optionally, the wall surface of the cavity includes a mounting bevel, the mounting bevel has an inner edge and an outer edge relative to each other in the preset direction, the inner edge is adjacent to the supporting surface relative to the outer edge in the preset direction, and the inner edge cooperates with the supporting surface.

[0007] Optionally, the supporting surface has a first edge and a second edge opposite to each other in the preset direction, and the mounting bevel includes: a bevel portion, the bevel portion having a third edge and a fourth edge opposite to each other in the preset direction, the fourth edge being connected to the first edge, and the bevel portion extending outward from the first edge along the preset direction; and a chamfered portion, the chamfered portion having a fifth edge and a sixth edge opposite to each other in the preset direction, the sixth edge being connected to the third edge, and the fifth edge being connected to the inner edge of the end face of the body.

[0008] Optionally, the first straight line is tangent to the sixth edge, and an angle between the first straight line and the preset direction is greater than or equal to 11 degrees and less than or equal to 17 degrees.

[0009] Optionally, the supporting surface has a first edge and a second edge opposite to each other in the preset direction, and the distance between the first edge and the second edge in the preset direction is 1.1 mm-1.8 mm.

[0010] Optionally, the supporting surface has a first edge and a second edge opposite to each other in the preset direction, the main body has a first end face and a second end face opposite to each other in the preset direction, the first edge is located between the first end face and the second edge in the preset direction, wherein the distance between the first edge and the second edge in the preset direction is L1, and the distance between the first edge and the first end face in the preset direction is L2, L2:L1=(2.1-2.7):1; and / or the distance between the first edge and the second edge in the preset direction is L1, and the distance between the second edge and the second end face in the preset direction is L3, L3:L1=(2-2.6):1.

[0011] Optionally, the body has a lubricating oil cavity, and the supporting surface is provided with a lubricating oil port communicating with the lubricating oil cavity.

[0012] Optionally, the body has a first end face and a second end face opposite to each other in the preset direction, the wall of the cavity includes a first wall face and a second wall face, and the supporting surface is located between the first wall face and the second wall face in the preset direction, wherein the second end face is provided with a first opening communicating with the lubricating oil cavity, the first wall face is provided with a second opening communicating with the lubricating oil cavity, and the second opening has a first end and a second end opposite to each other in the preset direction, the first end is connected to the lubricating oil port, and the second end is connected to the inner end of the first opening.

[0013] Optionally, the lubricating oil chamber has a bottom wall surface opposite to the first opening in the preset direction, and the bottom wall surface is located between the supporting surface and the first end surface in the preset direction, wherein the second wall surface is provided with a third opening connected to the lubricating oil chamber, and the third opening is connected to the lubricating oil port.

[0014] Optionally, the bearing further includes a sealing gasket, which is arranged on the second end surface and covers the first opening.

[0015] Optionally, the ratio of the area of the first opening to the area of the second opening is greater than or equal to a first preset value, and the cross-sectional area of the lubricating oil cavity is greater than or equal to the area of the first opening.

[0016] Optionally, there are multiple protrusions, and the multiple protrusions are arranged on the wall surface of the cavity at intervals along the circumference of the cavity; or the protrusions extend along the circumference of the cavity, and the supporting surface is a cylindrical surface.

[0017] The fan of the utility model comprises: a bearing, which is the bearing described in the utility model; a shaft, which is supported on a supporting surface of the bearing; and a fan blade, which is arranged on the shaft.

[0018] The fan of the utility model has the advantages of low friction noise, small amount of lubricating oil used and good lubrication effect.

[0019] The air conditioner of the utility model comprises the fan of the utility model.

[0020] The air conditioner of the utility model has the advantages of low friction noise, small amount of lubricating oil used and good lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 1 is a structural diagram of a bearing according to an embodiment of the present utility model;

[0022] Figure 2 1 is a structural diagram of a bearing according to an embodiment of the present utility model;

[0023] Figure 3 is a cross-sectional view of a bearing according to an embodiment of the present utility model;

[0024] Figure 4 yes Figure 3 A magnified view of area A in FIG;

[0025] Figure 5 yes Figure 3 Magnified view of area B in FIG;

[0026] Figure 6 is a cross-sectional view of a bearing according to an embodiment of the present utility model;

[0027] Figure 7 is a partial cross-sectional view of a fan according to an embodiment of the present utility model;

[0028] Figure 8 It is a partial exploded view of a fan according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] The following describes a bearing 100 according to an embodiment of the present invention with reference to the accompanying drawings. Figures 1-8 As shown, the bearing 100 according to the embodiment of the present invention includes a body 1 and a protrusion 2 .

[0031] The body 1 has a cavity 11 extending therethrough in a predetermined direction. Specifically, the cavity 11 extends through the body 1 in a predetermined direction. The protrusion 2 is disposed on the wall 12 of the cavity 11, specifically, on the inner circumferential surface of the body 1. The inner side surface 21a of the protrusion 2 is located inward of the wall 12 of the cavity 11, forming a support surface 21. A portion 210 of the shaft 200 is located within the cavity 11 and supported by the support surface 21.

[0032] The bearing 100 according to the embodiment of the present invention provides a protrusion 2 on the wall 12 of the cavity 11, with the inner side surface 21a of the protrusion 2 constituting the support surface 21 for supporting the shaft 200. This eliminates the need for a portion 210 of the shaft 200 to be supported on the wall 12 of the cavity 11 (the inner circumferential surface of the body 1). Because the area of the support surface 21 of the protrusion 2 is much smaller than the area of the wall 12 of the cavity 11, the contact area between the bearing 100 and the shaft 200 is effectively reduced, thereby effectively reducing friction between the bearing 100 and the shaft 200, and thereby effectively reducing vibration and friction noise.

[0033] Furthermore, by effectively reducing the contact area between the bearing 100 and the shaft 200 , the area of the lubrication region can also be reduced, thereby reducing the amount of lubricating oil used and improving the lubrication effect.

[0034] Therefore, by using the bearing 100 according to the embodiment of the present invention to support the shaft 200, the generation of vibration and friction noise can be effectively reduced, the amount of lubricating oil used can be reduced, and the lubrication effect can be improved.

[0035] like Figures 1-8 As shown, a bearing 100 according to an embodiment of the present invention includes a body 1 and a protrusion 2. The body 1 has a cavity 11 extending therethrough along a predetermined direction. When a portion 210 of a shaft 200 is located within the cavity 11 and supported on a support surface 21, the predetermined direction coincides with the axial direction of the shaft 200.

[0036] like Figure 1 and Figure 2 As shown, there are multiple protrusions 2, which are spaced apart along the circumference of cavity 11 (body 1) on wall surface 12 of cavity 11. When portion 210 of shaft 200 is located within cavity 11 and supported on support surface 21, the circumference of cavity 11 (body 1) coincides with the circumference of shaft 200. Providing multiple protrusions 2 allows bearing 100 (protrusions 2) to more stably support shaft 200.

[0037] Optionally, the protrusion 2 extends along the circumference of the cavity 11, and the support surface 21 is a cylindrical surface. In other words, the circumference of the protrusion 2 is consistent with the circumference of the cavity 11. This allows the bearing 100 (protrusion 2) to support the shaft 200 more stably.

[0038] like Figure 1-Figure 5 as well as Figure 7 As shown, the wall surface 12 of the cavity 11 includes a mounting bevel 13, and the mounting bevel 13 has an inner edge and an outer edge that are opposite to each other in a preset direction. The inner edge of the mounting bevel 13 is adjacent to the center line of the cavity 11 in the inner-outer direction relative to the outer edge of the mounting bevel 13. When a portion 210 of the shaft 200 is located in the cavity 11 and supported on the support surface 21, the inner edge of the mounting bevel 13 is adjacent to the center line of the shaft 200 in the inner-outer direction (radial direction of the shaft 200) relative to the outer edge of the mounting bevel 13. The preset direction and the inner-outer direction are as shown in FIG. Figure 3 As shown by the arrow in .

[0039] The inner edge is adjacent to the support surface 21 relative to the outer edge in a predetermined direction. The inner edge of the installation bevel 13 mates with the support surface 21. By providing the installation bevel 13 mates with the support surface 21, the installation bevel 13 guides the shaft 200 when it is installed on the bearing 100, thereby reducing the resistance encountered by the shaft 200 during installation, making it more convenient and easier to install the shaft 200 on the bearing 100.

[0040] For example, the preset direction is consistent with the left-right direction. The support surface 21 is located on the right side of the installation inclined surface 13 , and the inner side edge of the installation inclined surface 13 is located on the right side of the outer side edge of the installation inclined surface 13 .

[0041] like Figure 1-Figure 5 as well as Figure 7 As shown, the support surface 21 has a first edge 211 (eg, a left edge) and a second edge 212 (eg, a right edge) opposite to each other in a predetermined direction. The installation slope 13 includes a slope portion 131 and a rounded portion 132 .

[0042] The bevel portion 131 has a third edge 1311 (e.g., the left edge) and a fourth edge 1312 (e.g., the right edge) that are opposite to each other in a predetermined direction. The fourth edge 1312 is connected to the first edge 211, meaning that the fourth edge 1312 of the bevel portion 131 constitutes the inner edge of the mounting bevel 13. The bevel portion 131 extends outward from the first edge 211 along a predetermined direction, meaning that the fourth edge 1312 of the bevel portion 131 is located outside the third edge 1311 of the bevel portion 131.

[0043] The rounded portion 132 has a fifth edge 1321 (e.g., the left edge) and a sixth edge 1322 (e.g., the right edge) that are opposite to each other in a predetermined direction. The sixth edge 1322 is connected to the third edge 1311, thereby connecting the rounded portion 132 to the inclined portion 131. The fifth edge 1321 is connected to the inner edge of the end surface of the body 1. In other words, the rounded portion 132 extends outward from the third edge 1311 along the predetermined direction. In other words, the sixth edge 1322 of the rounded portion 132 is located outside the fifth edge 1321 of the rounded portion 132. For example, the fifth edge 1321 is connected to the inner edge of the first end surface 141 (e.g., the left end surface) of the body 1.

[0044] By providing the rounded portion 132 and the inclined portion 131, when the shaft 200 is installed on the bearing 100, the rounded portion 132 is first used to guide the shaft 200, and then the inclined portion 131 is used to guide the shaft 200, so as to further reduce the resistance encountered by the shaft 200 when installing the shaft 200, thereby making it more convenient and easier to install the shaft 200 on the bearing 100.

[0045] Optionally, the distance between the first edge 211 and the second edge 212 in the predetermined direction is 1.1 mm to 1.8 mm. In other words, the dimension of the support surface 21 in the predetermined direction is 1.1 mm to 1.8 mm. This further reduces the contact area between the bearing 100 and the shaft 200 while the support surface 21 securely supports the shaft 200. This not only further reduces friction between the bearing 100 and the shaft 200, thereby further reducing vibration and friction noise, but also further reduces lubricant usage and improves lubrication.

[0046] Further optionally, the distance between the first edge 211 and the second edge 212 in the predetermined direction is 1.3 mm to 1.6 mm. This can further reduce the contact area between the bearing 100 and the shaft 200 while the support surface 21 firmly supports the shaft 200. This not only further reduces friction between the bearing 100 and the shaft 200, thereby further reducing vibration and friction noise, but also further reduces the amount of lubricant used and further improves the lubrication effect.

[0047] Further optionally, the distance between the first edge 211 and the second edge 212 in the predetermined direction is 1.36 mm to 1.44 mm. This can further reduce the contact area between the bearing 100 and the shaft 200 while the support surface 21 firmly supports the shaft 200. This not only further reduces friction between the bearing 100 and the shaft 200, thereby further reducing vibration and friction noise, but also further reduces the amount of lubricant used and further improves the lubrication effect.

[0048] like Figure 1-Figure 3 、 Figure 5 and Figure 7 As shown, the body 1 has a first end surface 141 (e.g., a left end surface) and a second end surface 142 (e.g., a right end surface) that are opposite to each other in a preset direction, and the first edge 211 is located between the first end surface 141 and the second edge 212 in the preset direction. In other words, the second edge 212 is located between the first edge 211 and the second end surface 142 in the preset direction.

[0049] Optionally, the distance between the first edge 211 and the second edge 212 in the preset direction is L1, and the distance between the first edge 211 and the first end surface 141 in the preset direction is L2, where L2:L1=(2.1-2.7):1. This can make the structure of the bearing 100 more reasonable and enable the support surface 21 (bearing 100) to more stably support the shaft 200.

[0050] Further optionally, L2: L1 = (2.3-2.5): 1. This can make the structure of the bearing 100 more reasonable, and enable the supporting surface 21 (bearing 100) to support the shaft 200 more stably.

[0051] Further optionally, L2:L1=(2.41-2.44):1. This can make the structure of the bearing 100 more reasonable, and enable the supporting surface 21 (bearing 100) to support the shaft 200 more stably.

[0052] Optionally, the distance between the second edge 212 and the second end surface 142 in the preset direction is L3, where L3:L1=(2-2.6). This can make the structure of the bearing 100 more reasonable and enable the support surface 21 (bearing 100) to support the shaft 200 more stably.

[0053] Further optionally, the distance between the second edge 212 and the second end surface 142 in the preset direction is L3, L3: L1 = (2.2-2.4). This can make the structure of the bearing 100 more reasonable and enable the support surface 21 (bearing 100) to support the shaft 200 more stably.

[0054] Further optionally, the distance between the second edge 212 and the second end surface 142 in the preset direction is L3, L3: L1 = (2.31-2.34). This can make the structure of the bearing 100 more reasonable and enable the support surface 21 (bearing 100) to support the shaft 200 more stably.

[0055] like Figure 4As shown, the first straight line M1 is tangent to the sixth edge 1322, and the angle between the first straight line M1 and the preset direction is greater than or equal to 11 degrees and less than or equal to 17 degrees. In other words, the second straight line M2 is parallel to the preset direction, and the angle between the first straight line M1 and the second straight line M2 is greater than or equal to 11 degrees and less than or equal to 17 degrees. As a result, when the shaft 200 is installed on the bearing 100, the rounded portion 132 can be better utilized to guide the shaft 200, further reducing the resistance encountered by the shaft 200 during installation, making it more convenient and easier to install the shaft 200 on the bearing 100.

[0056] Further optionally, the angle between the first straight line M1 and the preset direction is greater than or equal to 13 degrees and less than or equal to 15 degrees. Thus, when the shaft 200 is mounted on the bearing 100, the rounded portion 132 can be better utilized to guide the shaft 200, thereby further reducing the resistance encountered by the shaft 200 during installation, making it more convenient and easier to install the shaft 200 on the bearing 100.

[0057] Further optionally, the angle between the first straight line M1 and the preset direction is greater than or equal to 14.1 degrees and less than or equal to 14.4 degrees. Thus, when the shaft 200 is mounted on the bearing 100, the rounded portion 132 can be better utilized to guide the shaft 200, thereby further reducing the resistance encountered by the shaft 200 during installation, making it more convenient and easier to install the shaft 200 on the bearing 100.

[0058] like Figure 1-Figure 7 As shown, the body 1 has a lubricating oil chamber 15, and the bearing surface 21 is provided with a lubricating oil port 213 connected to the lubricating oil chamber 15. This allows lubricating oil to be stored in the lubricating oil chamber 15, thereby avoiding the need to frequently add lubricating oil between the shaft 200 and the bearing surface 21 (bearing 100). By providing the lubricating oil port 213 on the bearing surface 21, which is connected to the lubricating oil chamber 15, the lubricating oil in the lubricating oil chamber 15 can enter the space between the bearing surface 21 and the shaft 200 through the lubricating oil port 213, thereby better lubricating the bearing surface 21 and the shaft 200.

[0059] like Figure 1-Figure 3 as well as Figure 7 As shown, the body 1 has a first end surface 141 (e.g., the left end surface) and a second end surface 142 (e.g., the right end surface) that are opposite to each other in a predetermined direction. The wall surface 12 of the cavity 11 includes a first wall surface 121 (e.g., the right wall surface) and a second wall surface 122 (e.g., the left wall surface). Optionally, the second wall surface 122 forms the mounting slope 13.

[0060] The supporting surface 21 is located between the first wall 121 and the second wall 122 in the preset direction, so that the supporting surface 21 (protrusion 2) is roughly located in the middle of the cavity 11 in the preset direction, thereby making the structure of the bearing 100 more reasonable, and the supporting surface 21 can support the shaft 200 more firmly, thereby making the structure of the fan 1000 more stable.

[0061] like Figure 3 and Figure 5 As shown, the first wall 121 has a seventh edge 1211 (e.g., the left edge) and an eighth edge 1212 (e.g., the right edge) that are opposite to each other in a preset direction. The seventh edge 1211 is adjacent to the support surface 21 relative to the eighth edge 1212 in the preset direction. The seventh edge 1211 is located outside the second edge 212, so that a step is formed between the support surface 21 and the first wall 121. The first wall 121 is an inclined surface, extending outward from the second edge 212 along the preset direction, that is, the eighth edge 1212 of the first wall 121 is located outside the seventh edge 1211 of the first wall 121. This can make the structure of the bearing 100 more reasonable.

[0062] The second end surface 142 defines a first opening 143 that communicates with the lubricating oil chamber 15. The first wall surface 121 defines a second opening 123 that communicates with the lubricating oil chamber 15. The second opening 123 has a first end 1231 (e.g., the left end) and a second end 1232 (e.g., the right end) that are opposite to each other in a predetermined direction. The first end 1231 is connected to the lubricating oil port 213, and the second end 1232 is connected to the inner end 1431 of the first opening 143. In other words, the second end 1232 is open, and the inner end 1431 of the first opening 143 is open.

[0063] That is, the first opening 143 extends inwardly to the first wall 121, and the second opening 123 extends along a predetermined direction to the second end surface 142. For example, the second opening 123 extends rightward to the second end surface 142. This reduces the difficulty of machining the lubricating oil chamber 15, thereby reducing the difficulty of manufacturing the bearing 100 and improving the manufacturing efficiency of the bearing.

[0064] like Figure 1-Figure 3 as well as Figure 7 As shown, the lubricating oil chamber 15 has a bottom wall surface 151 that is opposite to the first opening 143 in a predetermined direction. The bottom wall surface 151 is located between the supporting surface 21 and the first end surface 141 in the predetermined direction. This effectively increases the depth of the lubricating oil chamber 15, thereby allowing more lubricating oil to be stored in the lubricating oil chamber 15, effectively reducing the number of times lubricating oil needs to be added to the lubricating oil chamber 15 and improving the lubrication effect.

[0065] The second wall 122 is provided with a third opening 124 communicating with the lubricating oil chamber 15. The third opening 124 is connected to the lubricating oil port 213. The third opening 124 can reduce the difficulty of machining the lubricating oil chamber 15, thereby reducing the difficulty of manufacturing the bearing 100 and improving the manufacturing efficiency of the bearing.

[0066] like Figure 1-Figure 3 as well as Figure 7 As shown, the second opening 123 extends in a predetermined direction, the lubricating oil port 213 extends in a predetermined direction, and the third opening 124 extends in a predetermined direction. The end of the third opening 124, which is away from the first end surface 141 in the predetermined direction, is connected to the lubricating oil port 213. Specifically, the first opening 143, the second opening 123, the lubricating oil port 213, and the third opening 124 are sequentially connected to form a generally L-shaped opening.

[0067] like Figure 1-Figure 3 、 Figure 6 and Figure 7 As shown, there are multiple lubricating oil chambers 15, spaced apart along the circumference of cavity 11 (body 1). Accordingly, there are multiple lubricating oil ports 213, each correspondingly connected to one of the multiple lubricating oil chambers 15. This not only allows more lubricating oil to be stored in the lubricating oil chambers 15, effectively reducing the number of times lubricating oil needs to be added to the lubricating oil chambers 15 and improving lubrication, but also allows lubricating oil to be added between the shaft 200 and the support surface 21 (bearing 100) at multiple locations, further enhancing lubrication.

[0068] Correspondingly, there are multiple first openings 143 , second openings 123 and third openings 124 , and they are in one-to-one communication with the lubricating oil chamber 15 .

[0069] Optionally, the ratio of the area of the first opening 143 to the area of the second opening 123 is greater than or equal to a first preset value, and the ratio of the area of the first opening 143 to the area of the third opening 124 is greater than or equal to a second preset value. This can further reduce the difficulty of machining the lubricating oil chamber 15, thereby further reducing the difficulty of manufacturing the bearing 100 and further improving the manufacturing efficiency of the bearing.

[0070] The cross-sectional area of the lubricating oil chamber 15 is greater than or equal to the area of the first opening 143. This allows more lubricating oil to be stored in the lubricating oil chamber 15, effectively reducing the number of times lubricating oil needs to be added to the lubricating oil chamber 15 and improving the lubrication effect. The cross-sectional area of the lubricating oil chamber 15 is perpendicular to the predetermined direction.

[0071] like Figure 3 、 Figure 7 and Figure 8As shown, the bearing 100 further includes a sealing gasket 3, which is provided on the second end surface 142 and covers the first opening 143. This prevents lubricating oil from leaking from the first opening 143, thereby effectively reducing the number of times lubricating oil is added to the lubricating oil chamber 15 and improving the lubrication effect.

[0072] The fan 1000 according to the embodiment of the present invention comprises a bearing 100 , a shaft 200 and a fan blade. The shaft 200 is supported on a supporting surface 21 of the bearing 100 , and the fan blade is provided on the shaft 200 .

[0073] The fan 1000 according to the embodiment of the present invention has the advantages of low friction noise, small amount of lubricating oil used, and good lubrication effect.

[0074] Optionally, the fan 1000 may further include a bearing seat 300, and the bearing 100 is disposed on the bearing seat 300. Figure 8 As shown, the bearing seat 300 has a mounting cavity, in which at least a portion of the bearing 100 is mounted. The sealing gasket 3 can abut against the wall of the mounting cavity so that the sealing gasket 3 can more effectively cover the first opening 143 .

[0075] The air conditioner according to the embodiment of the present invention includes a fan 1000. The air conditioner according to the embodiment of the present invention has the advantages of low friction noise, small amount of lubricating oil used, good lubrication effect, etc.

[0076] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0077] Furthermore, 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0078] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0079] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0080] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean 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 invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0081] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A bearing, characterized in that: include: a body having a cavity extending therethrough in a predetermined direction; and The convex portion is provided on the wall surface of the cavity, and the inner side surface of the convex portion is located inside the wall surface of the cavity and constitutes a supporting surface.

2. The bearing according to claim 1, characterized in that The wall surface of the cavity includes a mounting bevel having an inner edge and an outer edge opposite to each other in the preset direction. The inner edge is adjacent to the supporting surface relative to the outer edge in the preset direction, and the inner edge cooperates with the supporting surface.

3. The bearing according to claim 2, characterized in that The supporting surface has a first edge and a second edge opposite to each other in the preset direction, and the mounting inclined surface includes: an inclined portion having a third edge and a fourth edge opposite to each other in the preset direction, the fourth edge being connected to the first edge, and the inclined portion extending outward from the first edge along the preset direction; and The rounded portion has a fifth edge and a sixth edge opposite to each other in the preset direction, the sixth edge is connected to the third edge, and the fifth edge is connected to the inner edge of the end surface of the body.

4. The bearing according to claim 3, characterized in that The first straight line is tangent to the sixth edge, and an angle between the first straight line and the preset direction is greater than or equal to 11 degrees and less than or equal to 17 degrees.

5. The bearing according to claim 1, characterized in that The supporting surface has a first edge and a second edge opposite to each other in the preset direction, and a distance between the first edge and the second edge in the preset direction is 1.1 mm to 1.8 mm.

6. The bearing according to claim 1, characterized in that The supporting surface has a first edge and a second edge opposite to each other in the preset direction, the body has a first end face and a second end face opposite to each other in the preset direction, the first edge is located between the first end face and the second edge in the preset direction, wherein The distance between the first edge and the second edge in the preset direction is L1, the distance between the first edge and the first end face in the preset direction is L2, L2:L1=(2.1-2.7):1; and / or The distance between the first edge and the second edge in the preset direction is L1, and the distance between the second edge and the second end face in the preset direction is L3, where L3:L1=(2-2.6):

1.

7. The bearing according to claim 1, characterized in that The body has a lubricating oil cavity, and the supporting surface is provided with a lubricating oil port communicating with the lubricating oil cavity.

8. The bearing according to claim 7, characterized in that The body has a first end face and a second end face opposite to each other in the preset direction, the wall of the cavity includes a first wall face and a second wall face, and the supporting surface is located between the first wall face and the second wall face in the preset direction, wherein the second end face is provided with a first opening communicating with the lubricating oil cavity, the first wall face is provided with a second opening communicating with the lubricating oil cavity, and the second opening has a first end and a second end opposite to each other in the preset direction, the first end is connected to the lubricating oil port, and the second end is connected to the inner end of the first opening.

9. The bearing according to claim 8, characterized in that The lubricating oil chamber has a bottom wall surface opposite to the first opening in the preset direction, and the bottom wall surface is located between the supporting surface and the first end surface in the preset direction, wherein the second wall surface is provided with a third opening connected to the lubricating oil chamber, and the third opening is connected to the lubricating oil port.

10. The bearing according to claim 8, characterized in that It further includes a sealing gasket, which is arranged on the second end surface and covers the first opening.

11. The bearing according to claim 10, characterized in that The ratio of the area of the first opening to the area of the second opening is greater than or equal to a first preset value, and the cross-sectional area of the lubricating oil cavity is greater than or equal to the area of the first opening.

12. The bearing according to claim 1, wherein There are multiple protrusions, and the multiple protrusions are arranged on the wall surface of the cavity at intervals along the circumference of the cavity; or The convex portion extends along the circumference of the cavity, and the supporting surface is a cylindrical surface.

13. A fan, characterized in that: include: A bearing, wherein the bearing is a bearing according to any one of claims 1 to 12; a shaft supported by a supporting surface of the bearing; and The fan blades are arranged on the shaft.

14. An air conditioner, characterized in that: Comprising the fan according to claim 13.

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