A bearing rubber ring, a bearing housing assembly and an air conditioner thereof

Abstract

This invention provides a bearing ring, a bearing housing assembly, and an air conditioner thereof, which are provided with a shaft hole. A bearing seat for accommodating the bearing is provided in the shaft hole. One end of the shaft hole is a first end, and the other end is a second end. A groove is provided on the end face of the first end. The groove is located below the shaft hole and is recessed towards the second end and downward. This invention can solve the technical problem in the prior art where lubricating oil flows from the bearing ring onto the air conditioner housing, causing corrosion and cracking.

Description

Technical Field

[0001] This invention belongs to the field of air conditioner technology, specifically relating to a bearing rubber ring, a bearing housing assembly, and an air conditioner thereof. Background Technology

[0002] The bottom shell parts of household wall-mounted air conditioners are generally made of ABS or HIPS plastic. 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 cross-flow fan blades in air conditioners happen to contain a lot of plasticizers such as DOP and ATBC.

[0003] In the traditional structure of the fan blades and bearings in wall-mounted air conditioners, the rotating cross-flow fan blades carry away the bearing lubricating oil. This lubricating oil easily flows out from the bearing ring's shaft hole and along the end face of the bearing ring onto the casing. When the lubricating oil comes into contact with the bearing ring, it accelerates the precipitation of plasticizers. Grease mixed with plasticizers such as DOP and ATBC can cause corrosion and cracking of the casing.

[0004] How to prevent bearing lubricating oil from coming into contact with 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 ring, a bearing housing assembly and an air conditioner thereof, which can solve the technical problem in the prior art where lubricating oil flows from the bearing ring onto the air conditioner housing, causing corrosion and cracking.

[0006] The first aspect of the present invention provides a bearing ring having a shaft hole, wherein a bearing seat for accommodating a bearing is provided in the shaft hole, one end of the shaft hole is a first end and the other end is a second end, and a groove is provided on the end face of the first end, the groove being located below the shaft hole, and the groove being recessed towards the second end and downward.

[0007] In some embodiments, the opening of the shaft hole facing the first end is an insertion port, and the end face of the first end includes a drainage surface and a fixing surface disposed below the insertion port. The drainage surface is connected to the inner wall surface of the groove. In the axial direction of the shaft hole, the drainage surface is closer to the second end than the fixing surface.

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

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

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

[0011] In some embodiments, a tapered surface is provided between the bearing seat and the end face 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 tapered surface and the end face of the first end, and the annular rib protrudes toward the center line of the shaft hole.

[0013] The present invention also provides a bearing housing assembly, including a bearing housing and a bearing ring disposed in the inner hole of the bearing housing; a first annular groove and a second annular groove are provided on the outer peripheral surface of the bearing ring surrounding the shaft hole, and a third annular protrusion is formed between the first annular groove and the second annular groove, the first annular groove being close to the first end and the second annular groove being close to the second end; the inner hole of the bearing housing is provided with the first annular protrusion and the second annular protrusion; the first annular protrusion is engaged in the first annular groove, and the second annular protrusion is engaged in the second annular groove;

[0014] In the radial direction of the shaft hole, the compressive force between the first annular groove and the first annular protrusion is F1, the compressive force between the second annular groove and the second annular protrusion is F2, and the compressive force between the third annular protrusion and the bearing seat is F3. Both F1 and F2 are greater than F3.

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

[0016] Thirdly, the present invention also provides an air conditioner, including an indoor unit, the indoor unit including a fan blade and the bearing housing assembly, the fan blade being provided with a rotating shaft, the bearing housing being provided with a bearing, the rotating shaft being 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] In the working state, the bearing ring of this application has a groove below the shaft hole, which allows the lubricating oil inside the bearing ring to flow into the groove, thus preventing the lubricating oil from dripping onto the ground. When the bearing ring is installed on the indoor unit of the air conditioner, the lubricating oil will not flow from the bearing ring onto the outer casing of the indoor unit, thus avoiding corrosion and cracking caused by contact between the outer casing and the lubricating oil. Attached Figure Description

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

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

[0020] Figure 2 This is an embodiment of the present invention. Figure 1 A schematic diagram after the view is rotated 90° counterclockwise;

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

[0022] Figure 4 This is an embodiment of the present invention. Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 This is a schematic diagram of the appearance when protrusions are provided on the outer ring surface of the bearing rubber ring according to an embodiment of the present invention;

[0024] Figure 6 This is an embodiment of the present invention. Figure 5 A cross-sectional view of the bearing rubber ring;

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

[0026] Figure 8 This is an embodiment of the present invention. Figure 7 A cross-sectional view of the bearing rubber ring after the section lines have been removed;

[0027] Figure 9 This is a schematic diagram of the bearing rubber ring of the indoor unit of the air conditioner being provided with a first annular groove and a second annular groove in an outer peripheral surface of the bearing rubber ring according to an embodiment of the present invention.

[0028] Figure 10 This is an embodiment of the present invention. Figure 9 Enlarged view at point B in the middle;

[0029] Figure 11 This is a schematic diagram of an existing air conditioner indoor unit;

[0030] Figure 12 yes Figure 11 Enlarged view at point C;

[0031] The attached figures are labeled as follows:

[0032] 1. Bearing 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 housing; 401. Inner annular surface; 402. Outer annular surface; 501. Protrusion; 502. Stop bar; 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. Cross-flow fan blade; 903. Annular gap; 904. Housing; 905. Inclined annular surface. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

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

[0036] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0037] See also Figures 1-10 As shown, the present invention provides a bearing ring with a shaft hole 103. When the bearing ring 1 is in working state, the axis of the shaft hole 103 is horizontal. A bearing seat 104 for accommodating the bearing 2 is provided in the shaft hole 103. One end of the shaft hole 103 is a first end 101, and the other end is a second end 102. A groove 105 is provided on the end face of the first end 101. The groove 105 is located below the shaft hole 103 and is recessed towards the second end 102 and downward.

[0038] In this application, "upper," "lower," and "horizontal" refer to the orientation when the bearing ring 1 is mounted on the bearing housing 3 and the bearing housing 3 is mounted 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] To reduce rotational friction in bearing 2, lubricating oil is applied or added to bearing 2, and the lubricating oil will flow outwards, such as... Figures 11-12 As shown, in the prior art, lubricating oil flows out from inside the bearing ring 1 and drips under the influence of gravity, which can affect the indoor environment. For example... Figure 4 As shown, this application provides a groove 105 on the end face of the first end 101 of the shaft hole 103. After the lubricating oil flows out from the first end 101, it will enter the groove 105 for storage. In this way, the contact between the lubricating oil containing oil DOP and ATBC and the air conditioner housing 904 is avoided, which would cause the air conditioner housing to corrode and crack too quickly.

[0040] When the bearing ring 1 is installed on the indoor unit of the air conditioner, the lubricating oil in the bearing ring 1 flows out from the shaft hole 103 and flows into the groove 105, instead of flowing onto the outer casing of the air conditioner, thus preventing damage to the outer casing (specifically, the bottom casing of the air conditioner).

[0041] "Groove 105 is recessed towards the second end 102 and downwards" means that from the first end 101 to the second end 102, groove 105 gradually extends downwards. In this way, groove 105 can store lubricating oil.

[0042] Preferred, such as Figures 4-6 As shown, the opening of the shaft hole 103 facing the first end 101 is an insertion port 106. The end face of the first end 101 includes a drainage surface 108 and a fixing surface 107 disposed 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 shaft hole 103, the drainage surface 108 is closer to the second end 102 than the fixing surface 107.

[0043] By setting the end face of the first end 101 as a drainage surface 108 and a fixing surface 107, since the drainage surface 108 is closer to the second end 102 than the fixing surface 107, and the fixing surface 107 provides a certain degree of protection for the drainage surface 108, the external structure will be blocked by the fixing surface 107 and will not be able to 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, preventing the lubricating oil from being diverted to other places by other structures during its flow into the groove 105. This also prevents the lubricating oil from dripping onto the ground due to its inability to flow smoothly into the groove 105.

[0044] Preferred, such as Figures 4-6 As shown, in the radial direction of the shaft hole 103, the fixing surface 107 is disposed on the outside of the drainage surface 108.

[0045] The solid surface 107 protects the path of lubricating oil to the groove 105 in the radial direction, thereby allowing the lubricating oil to flow smoothly into the groove 105.

[0046] Preferred, such as Figures 5-6 As shown, the end face of the first end 101 includes an outer annular surface 402 surrounding the shaft 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 shaft 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 shaft hole 103, and the annular groove 109 includes the groove 105.

[0047] When the bearing ring 1 is applied to the indoor unit of an air conditioner, the rotation of the fan blades in the indoor unit causes the lubricating oil to flow downwards not only under gravity but also potentially in other directions due to the wind force. The outer ring surface 402 surrounds the shaft hole 103, and the inner ring surface 401 surrounds the shaft hole 103. This allows the annular groove 109 to surround the shaft hole 103, enabling the lubricating oil flowing out from the end face of the first end 101 to flow along the inner ring surface 401 into the annular groove 109. Within the annular groove 109, the lubricating oil can flow downwards under gravity to the groove 105 for storage. The outer ring surface 402 also provides overall protection for the annular groove 109. Because of the annular groove 109, the bearing ring 1 does not need to consider its vertical orientation during installation.

[0048] In the axial direction, the width of the annular groove 109 can be set to 3.5 mm or more. The annular groove 109 is connected to the inner annular surface 401 via an inclined annular surface 905. From the radial inner side to the radial outer side, the inclined annular surface 905 gradually tilts towards 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 flow of lubricating oil into the annular groove 109 along the inclined annular surface 905. The solid between the outer annular surface 402 and the inner wall of the annular groove 109 is an annular block. The height of the annular block relative to the bottom of the annular groove 109 in the radial direction is greater than 2 mm. The axial spacing between the inner annular surface 401 of the side wall of the annular block facing the second end 102 is greater than 1 mm (the side wall of the annular block facing the second end 102 is closer to the first end 101 than the inner annular surface 401), to prevent some lubricating oil from failing to flow along the inclined annular surface 905 and flowing directly onto the annular block under the action of gravity.

[0049] Preferred, such as Figures 5-8 As shown, the outer annular surface 402 includes a protrusion 501, and / or the outer annular surface 402 includes a retaining strip 502 surrounding the shaft hole 103.

[0050] When lubricating oil flows from the annular groove 109 onto the outer annular surface 402, the protrusions 501 and / or baffles 502 on the outer ring increase the surface area of ​​the outer annular surface 402. The protrusions 501 and baffles 502 not only cause the lubricating oil to adhere to the outer annular surface 402, reducing 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 from the annular groove 109 is very small, the lubricating oil flowing onto the outer annular surface 402 can be consumed through evaporation.

[0051] The convex height of the protrusion 501 and the stop bar 502 in the axial direction is between 0.3mm and 0.5mm.

[0052] Preferred, such as Figure 6As shown, a tapered surface 503 is provided between the bearing seat 104 and the end face of the first end 101, and the flared opening formed by the tapered surface 503 faces the bearing seat 104.

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

[0054] Preferred, such as Figure 4 As shown, an annular rib 504 is provided between the tapered surface 503 and the end face 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 acts as a barrier to prevent lubricating oil from flowing out of the shaft hole 103.

[0056] The present invention also provides a bearing housing assembly, such as Figure 4 As shown, the bearing includes a bearing housing 3 and a bearing ring 1 disposed in the inner hole of the bearing housing 3; a first annular groove 601 and a second annular groove 109 are provided on the outer circumferential surface of the bearing 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 being close to the first end 101, and the second annular groove 109 being close to the second end 102; the inner hole of the bearing housing 3 is provided with a first annular protrusion 701 and a second annular protrusion 702; the first annular protrusion 701 is engaged in the first annular groove 601, and the second annular protrusion 702 is engaged in the second annular groove 109;

[0057] like Figure 10 As shown, in the radial direction of the shaft hole 103, the compressive force between the first annular groove 601 and the first annular protrusion 701 is F1, the compressive force between the second annular groove 109 and the second annular protrusion 702 is F2, and the compressive force between the third annular protrusion 703 and the bearing seat 3 is F3. Both F1 and F2 are greater than F3.

[0058] With the above settings, since F1 and F2 are both greater than F3, when bearing 2 is provided in bearing position 104, bearing 2 is subjected to greater extrusion force from bearing ring 1 at both ends of the axial direction (axial direction of shaft hole 103). This causes the lubricating oil on bearing 2 to reduce the speed at which it flows outward under the extrusion force at both ends.

[0059] Furthermore, through the engagement of the groove 105 and the protrusion, the bearing ring 1 is limited in the axial direction, preventing axial displacement and vibration of the bearing ring 1 relative to the bearing housing 3, thereby preventing the lubricating oil from flowing axially due to the axial movement and vibration of the bearing ring 1. This further prevents the possibility of lubricating oil flowing outward. Because the radial extrusion force at both ends of the bearing 2 is relatively large, the lubricating oil on the bearing 2 tends to flow towards the center (the center of the bearing 2 in the axial direction), further reducing and slowing down the outward flow of lubricating oil.

[0060] Preferred, such as Figure 6 As shown, the bearing seat 104 includes a first limiting surface 801 near the first end 101 and a second limiting surface 802 near the second end 102; the stiffness of the bearing 2 is greater than the stiffness of the bearing ring 1, and in the radial projection of the shaft 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 that of the bearing ring 1. This means that while F1 and F2 act on the outer circumferential surface of the bearing 2, the deformation of the bearing ring 1 can also squeeze the two end faces 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, including an indoor unit, such as... Figures 1-4 As shown, the indoor unit of the air conditioner includes a fan blade and the bearing housing assembly. The fan blade is provided with a rotating shaft 901, and the bearing housing 104 is provided with a bearing 2. The rotating shaft 901 is inserted into the bearing 2 through 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 ring 1 is used on the indoor unit of an air conditioner, lubricating oil dripping from the bearing ring 1 onto the air conditioner casing 904 can cause corrosion and cracking of the casing 904. This application addresses this by providing a groove 105 on the end face of the first end 101 of the shaft hole 103. The lubricating oil flowing from the first end 101 is stored in the groove 105, thus preventing lubricating oil from dripping onto the ground and onto the air conditioner casing 904. This further prevents the air conditioner casing 904 from contacting the lubricating oil and rapidly corroding and cracking.

[0065] Because an annular gap 903 is formed between the rotating shaft 901 and the annular rib 504, the annular rib 504 blocks the lubricating oil without contacting the rotating shaft 901, thus preventing the rotation of the rotating shaft 901 from being obstructed and also preventing noise from occurring due to contact between the rotating shaft 901 and the annular rib 504. Specifically, the size of the annular gap 903 in the radial direction is 0.3mm to 0.4mm.

[0066] Furthermore, the air conditioner's outer casing 904 is made of ABS (acrylonitrile-butadiene-styrene) or HIPS (high-impact polystyrene) plastic. The bearing ring 1 contains plasticizers such as DOP (dioctyl phthalate) and ATBC (acetylated tributyl citrate). The lubricating oil contained in the bearing ring 1 accelerates the precipitation of DOP and ATBC. After precipitation, DOP and ATBC mix with the lubricating oil. When the lubricating oil flows out from the shaft hole 103 and comes into contact with the air conditioner's outer casing 904, it accelerates the corrosion and cracking of the outer casing 904. Through the above arrangement, the lubricating oil can be stored in the groove 105, thereby preventing the lubricating oil containing DOP and ATBC from contacting the air conditioner's outer casing 904.

[0067] The annular rib 504 further blocks the lubricating oil. Due to the annular gap 903, the annular rib 504 will not adversely affect the rotation of the shaft 901.

[0068] Specifically, the bearing ring 1 is elastically deformed and positioned within the inner hole of the bearing housing 3. The bearing housing 3 is mounted on the outer casing 904 of the indoor unit (including the bottom shell). The bearing 2 is a sliding bearing 2, which has its own oil reservoir filled with lubricating oil. The fan blades of the indoor unit are cross-flow fan blades 902, and the lubricating oil flows when the cross-flow fan blades 902 rotate. Because the bearing ring 1 is made of rubber and has a certain degree of elasticity, it has a noise reduction and vibration damping effect on the rotation of the cross-flow fan blades 902.

[0069] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0070] The above description is merely 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 principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A bearing rubber ring, provided with a shaft hole (103), the axis of the shaft hole (103) is horizontal when the bearing rubber ring (1) is in working condition, a bearing position (104) for accommodating a bearing (2) is arranged in the shaft hole (103), one end of the shaft hole (103) is a first end (101), and the other end is a second end (102), characterized in that, The end face of the first end (101) is provided with a groove (105) located below the shaft hole (103), the groove (105) is recessed towards the second end (102) and below.

2. The bearing rubber ring of claim 1, wherein, The opening of the shaft hole (103) towards the first end (101) is an insertion port (106), the end face of the first end (101) includes a drainage surface (108) and a fixing surface (107) provided below the insertion port (106), the drainage surface (108) is connected with the inner wall surface of the groove (105); in the axial direction of the shaft hole (103), the drainage surface (108) is closer to the second end (102) than the fixing surface (107).

3. The bearing rubber ring of claim 2, wherein, In the radial direction of the shaft hole (103), the fixing surface (107) is provided outside the drainage surface (108).

4. The bearing rubber ring of claim 2, wherein, The end face of the first end (101) includes an outer ring surface (402) surrounding the shaft hole (103), the outer ring surface (402) includes the fixing surface (107); the end face of the first end (101) includes an inner ring surface (401) surrounding the shaft hole (103), the inner ring surface (401) includes the drainage surface (108); the end face of the first end (101) includes an annular groove (109) surrounding the shaft hole (103), the annular groove (109) includes the groove (105).

5. The bearing rubber ring of claim 4, wherein, The outer ring surface (402) includes a convex point (501), and / or the outer ring surface (402) includes a blocking 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 tapered surface (503) is provided between the bearing site (104) and the end face of the first end (101), the flared portion formed by the tapered surface (503) is towards the bearing site (104).

7. The bearing rubber ring of claim 6, wherein, An annular rib (504) is provided between the tapered surface (503) and the end face of the first end (101), the annular rib (504) protrudes towards the center line of the shaft hole (103).

8. A chock assembly characterized by, The bearing seat and the bearing rubber ring (1) provided in the inner hole of the bearing seat (3) are as claimed in any one of claims 1-7; a first annular groove (601) and a second annular groove (602) are provided 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); The extrusion force between the first annular groove (601) and the first annular protrusion (701) is F1, the extrusion force between the second annular groove (602) and the second annular protrusion (702) is F2, and the extrusion force between the third annular protrusion (703) and the bearing seat (3) is F3 in the radial direction of the shaft hole (103), wherein F1 and F2 are greater than F3.

9. The bearing seat assembly of claim 8, wherein, The bearing site (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 that of the bearing rubber ring (1), and in the projection in the radial direction of the shaft 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 by comprising: The air conditioner indoor unit comprises a fan blade and the bearing seat assembly according to any one of claims 8-9, the fan blade is provided with a rotating shaft (901), the bearing site (104) is provided with a bearing (2), the rotating shaft (901) is inserted into the bearing (2) from the insertion opening (106), and when the 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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