Bearing rubber ring, bearing seat assembly and air conditioner thereof

Abstract

The bearing rubber ring is provided with a shaft hole, a bearing position used for containing a bearing is arranged in the shaft hole, one end of the shaft hole is a first end, the other end of the shaft hole is a second end, a groove is formed in the end face of the first end, the groove is located below the shaft hole, and the bearing seat is arranged in the shaft hole. The groove is recessed towards the second end and the lower portion at the same time, so that the technical problem that in the prior art, lubricating oil flows out of a bearing rubber ring to a shell of an air conditioner to cause corrosion cracking of the shell can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of air conditioners, and in particular relates to a bearing rubber ring, a bearing seat assembly and an air conditioner thereof. Background Art

[0002] The materials of the bottom shell parts of household wall-mounted air conditioners are generally ABS or HIPS plastics. ABS and HIPS plastics are prone to corrosion and cracking when in contact with plasticizers such as DOP and ATBC. The rubber bearing rings used to reduce vibration and noise during the operation of the air conditioner's cross-flow fan blades happen to contain a lot of plasticizers such as DOP and ATBC.

[0003] In the traditional wall-mounted air conditioner fan blade and bearing matching structure, the cross-flow fan blade will bring out the bearing lubricating oil during rotation. The lubricating oil is easy to flow out from the shaft hole of the bearing rubber ring and flow along the end surface of the bearing rubber ring to the bottom shell. When the lubricating oil contacts the bearing rubber ring, it will accelerate the precipitation of plasticizers, and grease mixed with plasticizers such as DOP and ATBC will cause corrosion and cracking of the bottom shell.

[0004] How to prevent bearing lubricating oil from contacting the air conditioner casing is a technical problem that urgently needs to be solved. Summary of the invention

[0005] Therefore, the present invention provides a bearing rubber ring, a bearing seat assembly and an air conditioner thereof, which can solve the technical problem in the prior art that lubricating oil flows out of the bearing rubber ring onto the outer shell of the air conditioner, causing corrosion and cracking thereof.

[0006] A first aspect of the present invention provides a bearing rubber ring, which is provided with an axial hole, and a bearing seat for accommodating a bearing is provided in the axial hole. One end of the axial hole is a first end, and the other end is a second end. The end surface of the first end is provided with a groove, and the groove is located below the axial hole. The groove is recessed toward the second end and below at the same time.

[0007] In some embodiments, the opening of the axial hole toward the first end is an insertion port, and the end surface of the first end includes a drainage surface and a fixing surface arranged below the insertion port, and the drainage surface is connected to the inner wall surface of the groove; in the axial direction of the axial hole, the drainage surface is closer to the second end than the fixing surface.

[0008] In some embodiments, in the radial direction of the axial hole, the fixing surface is arranged outside the drainage surface.

[0009] In some embodiments, the end face of the first end includes an outer annular surface surrounding the axial hole, and the outer annular surface includes the fixing surface; the end face of the first end includes an inner annular surface surrounding the axial hole, and the inner annular surface includes the drainage surface; the end face of the first end includes an annular groove surrounding the axial hole, and the annular groove includes the groove.

[0010] In some embodiments, the outer annular surface includes protrusions, and / or the outer annular surface includes a retaining bar surrounding the axial hole.

[0011] In some embodiments, a tapered surface is provided between the bearing seat and an end surface of the first end, and the flared opening formed by the tapered surface faces the bearing seat.

[0012] In some embodiments, an annular rib is provided between the conical surface and the end surface of the first end, and the annular rib protrudes toward the center line of the axial hole.

[0013] The present invention further provides a bearing seat assembly, comprising a bearing seat and a bearing rubber ring arranged in the inner hole of the bearing seat; a first annular groove and a second annular groove are arranged on the outer circumferential surface of the bearing rubber ring surrounding the shaft hole, a third annular protrusion is formed between the first annular groove and the second annular groove, the first annular groove is close to the first end, and the second annular groove is close to the second end; the inner hole of the bearing seat is provided with a first annular protrusion and a second annular protrusion; the first annular protrusion is clamped into the first annular groove, and the second annular protrusion is clamped into the second annular groove;

[0014] In the radial direction of the axial hole, the extrusion pressure between the first annular groove and the first annular protrusion is F1, the extrusion pressure between the second annular groove and the second annular protrusion is F2, and the extrusion pressure between the third annular protrusion and the bearing seat is F3, and both F1 and F2 are greater than F3.

[0015] In some embodiments, the bearing position includes a first limiting surface close to the first end and a second limiting surface close to the second end; the stiffness of the bearing is greater than the stiffness of the bearing rubber ring, and in the radial projection of the axial hole, the first annular groove covers the first limiting surface, and the second annular groove covers the second limiting surface.

[0016] In a third aspect, the present invention further provides an air conditioner, comprising an indoor unit of an air conditioner, the indoor unit of the air conditioner comprising a fan blade and the bearing seat assembly, the fan blade is provided with a rotating shaft, the bearing position is provided with a bearing, the rotating shaft is inserted into the bearing from an insertion port, and when an annular rib is provided, an annular gap is formed between the rotating shaft and the annular rib.

[0017] When the bearing rubber ring of the present application is in working state, a groove is provided below the shaft hole, and the lubricating oil in the bearing rubber ring can flow into the groove, thereby preventing the lubricating oil from dripping onto the ground; when the bearing rubber ring is set on the indoor unit of the air conditioner, the lubricating oil will not flow from the bearing rubber ring to the outer casing of the indoor unit of the air conditioner, thus avoiding corrosion and cracking caused by contact between the outer casing and the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] Figure 1 is an exploded view of an air conditioner indoor unit according to an embodiment of the present invention;

[0020] Figure 2 The embodiment of the present invention Figure 1 Schematic diagram after the view is rotated 90° counterclockwise;

[0021] Figure 3 is a schematic diagram of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0022] Figure 4 The embodiment of the present invention Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 is a schematic diagram of the appearance of a bearing rubber ring in an embodiment of the present invention when convex points are arranged on the outer ring surface;

[0024] Figure 6 The embodiment of the present invention Figure 5 Cross-sectional view of the bearing rubber ring;

[0025] Figure 7 is a schematic diagram of the appearance of a bearing rubber ring according to an embodiment of the present invention when a retaining strip is provided on the outer ring surface;

[0026] Figure 8 The embodiment of the present invention Figure 7 Cross-sectional view of the bearing rubber ring with the hatching line removed;

[0027] Fig. 9 Schematic diagram of a case where a first annular groove and a second annular groove are provided on the outer peripheral surface of a bearing rubber ring of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0028] Fig.10 The embodiment of the present invention Fig. 9 Enlarged view of point B in the middle;

[0029] Fig.11 It is a schematic diagram of an indoor unit of an air conditioner in the prior art;

[0030] Fig.12 yes Fig.11 Enlarged view of point C in the middle;

[0031] The accompanying drawings are marked as follows:

[0032] 1. Bearing rubber ring; 101. First end; 102. Second end; 103. Shaft hole; 104. Bearing seat; 105. Groove; 106. Insertion port; 107. Fixing surface; 108. Drainage surface; 109. Annular groove; 2. Bearing; 3. Bearing seat; 401. Inner annular surface; 402. Outer annular surface; 501. Protrusion; 502. Baffle; 503. Conical surface; 504. Annular rib; 601. First annular groove; 602. Second annular groove; 701. First annular protrusion; 702. Second annular protrusion; 703. Third annular protrusion; 801. First limiting surface; 802. Second limiting surface; 901. Rotating shaft; 902. Crossflow fan blade; 903. Annular gap; 904. Housing; 905. Inclined annular surface. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0035] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0036] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0037] See also Figure 1-10 As shown, the present invention provides a bearing rubber ring, which is provided with an axial hole 103. When the bearing rubber ring 1 is in a working state, the axis of the axial hole 103 is in a horizontal direction, and a bearing position 104 for accommodating a bearing 2 is provided in the axial hole 103. One end of the axial hole 103 is a first end 101, and the other end is a second end 102. The end surface of the first end 101 is provided with a groove 105, and the groove 105 is located below the axial hole 103. The groove 105 is recessed toward the second end 102 and below at the same time.

[0038] The "upper", "lower" and "horizontal" in this application are referenced to the working position when the bearing rubber ring 1 is set on the bearing seat 3 and the bearing seat 3 is set on the air conditioner. "Axial" refers to the axial direction of the shaft hole 103, and "radial" refers to the radial direction of the shaft hole 103.

[0039] In order to reduce the rotational friction of the bearing 2, lubricating oil is applied to the bearing 2 and added to the bearing 2, and the lubricating oil flows outward. Figure 11-12 As shown, the lubricating oil in the prior art flows out from the bearing rubber ring 1 and drips under the action of gravity, which will affect the indoor environment. Figure 4 As shown, the present application sets a groove 105 on the end face of the first end 101 of the shaft hole 103, and the lubricating oil flows out from the first end 101 and is stored in the groove 105. In this way, the contact between the lubricating oil containing DOP and ATBC and the air-conditioning casing 904, which may cause the air-conditioning casing to corrode and crack too quickly, is avoided.

[0040] When the bearing rubber ring 1 is set on the indoor unit of the air conditioner, when the lubricating oil in the bearing rubber ring 1 flows out from the shaft hole 103, it will flow into the groove 105 and will not flow onto the outer shell of the air conditioner, thereby preventing the outer shell of the air conditioner (specifically, the bottom shell of the air conditioner) from being damaged.

[0041] “The groove 105 is recessed toward the second end 102 and downward at the same time” means that the groove 105 gradually extends downward from the first end 101 to the second end 102. In this way, the groove 105 can store lubricating oil.

[0042] Preferably, Figure 4-6 As shown, the opening of the axial hole 103 toward the first end 101 is an insertion port 106, and the end surface of the first end 101 includes a drainage surface 108 and a fixing surface 107 arranged below the insertion port 106, and the drainage surface 108 is connected to the inner wall surface of the groove 105; in the axial direction of the axial hole 103, the drainage surface 108 is closer to the second end 102 than the fixing surface 107.

[0043] By setting the end surface of the first end 101 as the drainage surface 108 and the fixed surface 107, since the drainage surface 108 is closer to the second end 102 than the fixed surface 107, the fixed surface 107 forms a certain protective effect on the drainage surface 108, and the external structure will be blocked by the fixed surface 107 and cannot contact the drainage surface 108. In this way, the lubricating oil can flow from the first end 101 into the groove 105 without contacting the external structure, avoiding the lubricating oil being diverted to other places by other structures during the process of flowing to the groove 105. It is avoided that the lubricating oil cannot smoothly flow into the groove 105 and drips onto the ground.

[0044] Preferably, Figure 4-6 As shown, in the radial direction of the shaft hole 103 , the fixing surface 107 is arranged outside the guide surface 108 .

[0045] The entity where the fixed surface 107 is located protects the path of the lubricating oil flowing toward the groove 105 in the radial direction, thereby allowing the lubricating oil to flow smoothly into the groove 105 .

[0046] Preferably, Figure 5-6 As shown, the end face of the first end 101 includes an outer annular surface 402 surrounding the axial hole 103, and the outer annular surface 402 includes the fixing surface 107; the end face of the first end 101 includes an inner annular surface 401 surrounding the axial hole 103, and the inner annular surface 401 includes the drainage surface 108; the end face of the first end 101 includes an annular groove 109 surrounding the axial hole 103, and the annular groove 109 includes the groove 105.

[0047] When the bearing rubber ring 1 is applied to the indoor unit of the air conditioner, the rotation of the fan blades on the indoor unit of the air conditioner will cause the lubricating oil to not only flow downward under the action of gravity, but also flow in other directions due to the influence of wind. The outer ring surface 402 surrounds the shaft hole 103 for one circle, and the inner ring surface 401 surrounds the shaft hole 103 for one circle, so that the annular groove 109 surrounds the shaft hole 103 for one circle, so that when the lubricating oil flows out from the end surface of the first end 101, it can flow along the inner ring surface 401 into the annular groove 109. In the annular groove 109, the lubricating oil can flow downward under the action of gravity to the groove 105 for storage. The outer ring surface 402 as a whole also protects the annular groove 109. Due to the provision of the annular groove 109, the bearing rubber ring 1 does not need to consider the upper and lower positions when installing.

[0048] In the axial direction, the width of the annular groove 109 can be set to be above 3.5 mm. The annular groove 109 is connected to the inner annular surface 401 via the inclined annular surface 905. From the radial inner side to the radial outer side, the inclined annular surface 905 gradually tilts toward the second end 102. In the radial projection, the obtuse angle formed by the inclined annular surface 905 and the inner annular surface 401 is about 130°, which facilitates the lubricating oil to flow into the annular groove 109 along the inclined annular surface 905. The entity between the outer annular surface 402 and the inner wall surface of the annular groove 109 is an annular block. The height of the annular block in the radial direction is greater than 2 mm compared to the groove bottom of the annular groove 109. The axial spacing between the side wall surface of the annular block facing the second end 102 and the inner annular surface 401 is greater than 1 mm (the side wall surface of the annular block facing the second end 102 is closer to the first end 101 than the inner annular surface 401), so as to avoid that part of the lubricating oil fails to flow along the inclined annular surface 905 and directly flows to the annular block under the action of gravity.

[0049] Preferably, Figure 5-8 As shown, the outer annular surface 402 includes a protrusion 501 , and / or the outer annular surface 402 includes a retaining bar 502 surrounding the shaft hole 103 .

[0050] When lubricating oil flows out from the annular groove 109 to the outer ring surface 402, the protrusions 501 and / or the baffles 502 on the outer ring increase the surface area of ​​the outer ring surface 402. The protrusions 501 and the baffles 502 not only make the lubricating oil adhere to the outer ring surface 402 and reduce the downward flow of the lubricating oil, but also increase the evaporation surface area of ​​the lubricating oil. Since the amount of lubricating oil flowing out of the annular groove 109 is very small, the lubricating oil flowing to the outer ring surface 402 can be consumed by evaporation.

[0051] The protruding height of the protruding point 501 and the blocking bar 502 in the axial direction is between 0.3 mm and 0.5 mm.

[0052] Preferably, Figure 6As shown, a conical surface 503 is provided between the bearing position 104 and the end surface of the first end 101 , and the flared opening formed by the conical surface 503 faces the bearing position 104 .

[0053] When the lubricating oil flows out from the bearing seat 104 , due to the setting of the conical surface 503 , the lubricating oil flows toward the bearing seat 104 under the guidance of the conical surface 503 , which not only avoids the lubricating oil from flowing out, but also enables the lubricating oil to lubricate the bearing 2 on the bearing seat 104 .

[0054] Preferably, Figure 4 As shown, an annular rib 504 is provided between the conical surface 503 and the end surface of the first end 101 , and the annular rib 504 protrudes toward the center line of the shaft hole 103 .

[0055] The annular rib 504 blocks the lubricating oil and prevents the lubricating oil from flowing out of the shaft hole 103 .

[0056] The present invention also provides a bearing seat assembly, such as Figure 4 As shown, it includes a bearing seat 3 and a bearing rubber ring 1 arranged in the inner hole of the bearing seat 3; a first annular groove 601 and a second annular groove 109 are arranged on the outer circumferential surface of the bearing rubber ring 1 surrounding the shaft hole 103, and a third annular protrusion 703 is formed between the first annular groove 601 and the second annular groove 109, the first annular groove 601 is close to the first end 101, and the second annular groove 109 is close to the second end 102; the inner hole of the bearing seat 3 is provided with a first annular protrusion 701 and a second annular protrusion 702; the first annular protrusion 701 is clamped into the first annular groove 601, and the second annular protrusion 702 is clamped into the second annular groove 109;

[0057] like Fig.10 As shown, in the radial direction of the axial hole 103, the extrusion pressure between the first annular groove 601 and the first annular protrusion 701 is F1, the extrusion pressure between the second annular groove 109 and the second annular protrusion 702 is F2, and the extrusion pressure between the third annular protrusion 703 and the bearing seat 3 is F3, and both F1 and F2 are greater than F3.

[0058] Through the above-mentioned arrangement, since both F1 and F2 are greater than F3, when the bearing 2 is arranged at the bearing position 104, the bearing 2 is subjected to a greater squeezing force from the bearing rubber ring 1 at both axial ends (the axial direction of the shaft hole 103), which reduces the speed at which the lubricating oil on the bearing 2 flows outward under the squeezing force at both ends thereof.

[0059] Moreover, through the cooperation between the groove 105 and the protrusion, the bearing rubber ring 1 is limited in the axial direction, so as to prevent the bearing rubber ring 1 from being displaced or vibrated in the axial direction relative to the bearing seat 3, thereby preventing the lubricating oil from flowing in the axial direction due to the axial movement or vibration of the bearing rubber ring 1. The possibility of the lubricating oil flowing outward is further avoided. Since the radial extrusion force on both ends of the bearing 2 is relatively large, the lubricating oil on the bearing 2 has a tendency to flow toward the middle (the middle of the bearing 2 in the axial direction), further reducing and slowing down the outward flow of the lubricating oil.

[0060] Preferably, Figure 6 As shown, the bearing position 104 includes a first limiting surface 801 close to the first end 101 and a second limiting surface 802 close to the second end 102; the stiffness of the bearing 2 is greater than the stiffness of the bearing rubber ring 1, and in the radial projection of the axial hole 103, the first annular groove 601 covers the first limiting surface 801, and the second annular groove 109 covers the second limiting surface 802.

[0061] The first limiting surface 801 and the second limiting surface 802 limit the bearing 2 disposed on the bearing position 104 in the axial direction of the shaft hole 103 .

[0062] In the radial projection, the first annular groove 601 covers the first limiting surface 801, and the second annular groove 109 covers the second limiting surface 802. The stiffness of the bearing 2 is greater than the stiffness of the bearing rubber ring 1. This means that when F1 and F2 act on the outer peripheral surface of the bearing 2, the deformation of the bearing rubber ring 1 can also squeeze the two end surfaces of the bearing 2 in the axial direction, thereby further limiting the bearing 2 in the axial direction.

[0063] The present invention also provides an air conditioner, comprising an air conditioner indoor unit, such as Figure 1-4 As shown, the air conditioner indoor unit includes a fan blade and the bearing seat assembly, the fan blade is provided with a rotating shaft 901, the bearing position 104 is provided with a bearing 2, and the rotating shaft 901 is inserted into the bearing 2 from the insertion port 106. Figure 4 As shown, when the annular rib 504 is provided, an annular gap 903 is formed between the rotating shaft 901 and the annular rib 504 .

[0064] When the bearing rubber ring 1 is applied to the air conditioner inner unit, the lubricating oil flows out of the bearing rubber ring 1 and drips onto the outer shell 904 of the air conditioner, which may cause corrosion and cracking of the outer shell 904. In the present application, a groove 105 is provided on the end surface of the first end 101 of the shaft hole 103, and the lubricating oil flows out of the first end 101 and enters the groove 105 for storage, thereby preventing the lubricating oil from dripping onto the ground and the outer shell 904 of the air conditioner inner unit. This prevents the air conditioner outer shell 904 from contacting with the lubricating oil and causing rapid corrosion and cracking.

[0065] Since an annular gap 903 is formed between the rotating shaft 901 and the annular rib 504, the annular rib 504 blocks the lubricating oil while not contacting the rotating shaft 901, thereby preventing the rotating shaft 901 from being blocked from rotating and also preventing noise from being generated due to the contact between the rotating shaft 901 and the annular rib 504. Specifically, the size of the annular gap 903 in the radial direction is 0.3 mm to 0.4 mm.

[0066] Furthermore, the housing 904 of the air conditioner is made of ABS (acrylonitrile-butadiene-styrene plastic) or HIPS (high impact polystyrene) plastic, and the bearing rubber ring 1 contains plasticizers such as DOP (dioctyl phthalate) and ATBC (acetyl tributyl citrate). The lubricating oil contained in the bearing rubber ring 1 will accelerate the precipitation of DOP and ATBC, and DOP and ATBC will be mixed in the lubricating oil after precipitation. The lubricating oil flows out of the shaft hole 103 and contacts with the housing 904 of the air conditioner, which will accelerate the corrosion and cracking of the housing 904. Through the above configuration, the lubricating oil can be stored in the groove 105, thereby avoiding the contact between the lubricating oil containing DOP and ATBC and the housing 904 of the air conditioner.

[0067] The annular rib 504 can further block the lubricating oil. Due to the annular gap 903, the annular rib 504 will not have an adverse effect on the rotation of the rotating shaft 901.

[0068] Specifically, the bearing rubber ring 1 is arranged in the inner hole of the bearing seat 3 through elastic deformation, the bearing seat 3 is clamped on the housing 904 of the indoor unit (on the bottom shell included in the housing 904), the bearing 2 is a sliding bearing 2, and the bearing 2 itself is provided with an oil storage cavity, and the bearing 2 is filled with lubricating oil. The fan blade of the indoor unit is a crossflow fan blade 902, and the lubricating oil flows when the crossflow fan blade 902 rotates. Since the bearing rubber ring 1 is made of rubber material and has a certain elasticity, it has a noise reduction and vibration reduction effect on the rotation of the crossflow fan blade 902.

[0069] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A bearing rubber ring, provided with an axial hole (103), wherein when the bearing rubber ring (1) is in a working state, the axis of the axial hole (103) is in a horizontal direction, a bearing seat (104) for accommodating a bearing (2) is provided in the axial hole (103), one end of the axial hole (103) is a first end (101), and the other end is a second end (102), wherein the bearing rubber ring (1) is characterized in that: The end surface of the first end (101) is provided with a groove (105), the groove (105) is located below the shaft hole (103), and the groove (105) is recessed toward the second end (102) and downward at the same time.

2. The bearing rubber ring according to claim 1, characterized in that: The opening of the axial hole (103) toward the first end (101) is an insertion port (106); the end surface of the first end (101) includes a drainage surface (108) and a fixing surface (107) arranged below the insertion port (106); the drainage surface (108) is connected to the inner wall surface of the groove (105); in the axial direction of the axial hole (103), the drainage surface (108) is closer to the second end (102) than the fixing surface (107).

3. The bearing rubber ring according to claim 2, characterized in that: In the radial direction of the axial hole (103), the fixing surface (107) is arranged outside the drainage surface (108).

4. The bearing rubber ring according to claim 2, characterized in that: The end surface of the first end (101) includes an outer annular surface (402) surrounding the axial hole (103), and the outer annular surface (402) includes the fixing surface (107); the end surface of the first end (101) includes an inner annular surface (401) surrounding the axial hole (103), and the inner annular surface (401) includes the drainage surface (108); the end surface of the first end (101) includes an annular groove (109) surrounding the axial hole (103), and the annular groove (109) includes the groove (105).

5. The bearing rubber ring according to claim 4, characterized in that: The outer annular surface (402) includes a convex point (501), and / or the outer annular surface (402) includes a retaining strip (502) surrounding the shaft hole (103).

6. The bearing rubber ring according to any one of claims 1 to 5, characterized in that: A conical surface (503) is provided between the bearing position (104) and the end surface of the first end (101), and the flared opening formed by the conical surface (503) faces the bearing position (104).

7. The bearing rubber ring according to claim 6, characterized in that: An annular rib (504) is provided between the conical surface (503) and the end surface of the first end (101), and the annular rib (504) protrudes toward the center line of the shaft hole (103).

8. A bearing seat assembly, characterized in that: A bearing seat and a bearing rubber ring (1) as claimed in any one of claims 1 to 7 arranged in the inner hole of the bearing seat (3); a first annular groove (601) and a second annular groove (602) are arranged on the outer peripheral surface of the bearing rubber ring (1) surrounding the shaft hole (103); a third annular protrusion (703) is formed between the first annular groove (601) and the second annular groove (602); the first annular groove (601) is close to the first end (101), and the second annular groove (602) is close to the second end (102); the inner hole of the bearing seat (3) is provided with a first annular protrusion (701) and a second annular protrusion (702); the first annular protrusion (701) is inserted into the first annular groove (601), and the second annular protrusion (702) is inserted into the second annular groove (602); In the radial direction of the axial hole (103), the extrusion pressure between the first annular groove (601) and the first annular protrusion (701) is F1, the extrusion pressure between the second annular groove (602) and the second annular protrusion (702) is F2, and the extrusion pressure between the third annular protrusion (703) and the bearing seat (3) is F3, and both F1 and F2 are greater than F3.

9. The bearing housing assembly according to claim 8, characterized in that: The bearing position (104) comprises a first limiting surface (801) close to the first end (101) and a second limiting surface (802) close to the second end (102); the rigidity of the bearing (2) is greater than the rigidity of the bearing rubber ring (1), and in the radial projection of the axial hole (103), the first annular groove (601) covers the first limiting surface (801), and the second annular groove (602) covers the second limiting surface (802).

10. An air conditioner, characterized in that: The invention comprises an indoor unit of an air conditioner, wherein the indoor unit of the air conditioner comprises a fan blade and a bearing seat assembly according to any one of claims 8 to 9, wherein the fan blade is provided with a rotating shaft (901), the bearing position (104) is provided with a bearing (2), the rotating shaft (901) is inserted into the bearing (2) from an insertion port (106), and when an annular rib (504) is provided, an annular gap (903) is formed between the rotating shaft (901) and the annular rib (504).

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