Bearing assembly, washing drum rear end part and clothes processing equipment

Abstract

The utility model discloses a bearing assembly which comprises a bearing and an injection molding part wrapping the bearing, the bearing comprises a first bearing outer ring, a second bearing outer ring and a bearing inner ring, and the first bearing outer ring is connected with the second bearing outer ring through a connecting part. The bearing inner ring and / or the connecting part are / is provided with a limiting part which is connected with the injection molding piece and used for limiting shrinkage of the injection molding piece, the utility model further discloses a washing drum rear end component and clothes processing equipment, the limiting part is arranged on the bearing inner ring and / or the connecting part, shrinkage of the injection molding piece at the limiting part is limited, and the service life of the washing drum rear end component is prolonged. The gap between the bearing and the injection-molded part is reduced, the water leakage risk is reduced, and reliable operation of the roller washing machine is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of clothing processing equipment, and in particular relates to a bearing assembly, a rear end component of a washing drum and clothing processing equipment. Background Art

[0002] The rear end component of the drum outer drum of the drum washing machine is a plastic product that wraps the bearing with plastic material. The rear end component of the washing drum is mainly used to support the rotating drive part of the entire washing machine, and it is also a part of the drum washing drum of the drum washing machine. The rear end component of the washing drum contains not only injection molded parts, but also metal parts and rubber parts. The components of the rear end component of the washing drum not only play the important role of rotating the washing drum of the washing machine, but also play a sealing role to prevent the water inside the washing drum from flowing out.

[0003] Among them, the rear end components of the washing drum include injection molded parts and bearings. During the injection molding process, the materials of the injection molded parts and the bearings are inconsistent, which will cause shrinkage and cause a gap between the two. The traditional bearing construction only considers the dynamic balance of rotation and cannot meet the problem of no cracking after injection molding. The existing gap between the bearing and the injection molded part is 0.3mm to 0.5mm, and there is a risk of water leakage. Therefore, how to maximize the fit between the bearing and the injection molded part is the key to the design and the reliable guarantee for the operation of the drum washing machine.

[0004] The Chinese patent application number 202011291143.4 discloses a bearing and a method for preparing the same, an outer barrel and a method for preparing the same, and a clothing treatment device. The bearing includes: a bearing seat, the bearing seat includes an inner injection molded part; a first bearing and a second bearing, the first bearing and the second bearing are arranged on the inner injection molded part at intervals, and the bearing seat also includes an outer injection molded part, which is engaged with the inner injection molded part and / or the outer ring of the first bearing and / or the outer ring of the second bearing. The patent does not take into account the problem of gaps caused by post-shrinkage due to the inconsistency of the materials of the injection molded part and the bearing during injection molding, which poses a risk of water leakage.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a bearing that can prevent the shrinkage of the injection molded part, reduce the gap between the bearing and the injection molded part, reduce the risk of water leakage, and ensure the reliable operation of the drum washing machine. The utility model also provides a washing drum rear end component and a clothes processing device.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0008] A bearing assembly comprises a bearing and an injection molded part wrapping the bearing, wherein the bearing comprises a first bearing outer ring, a second bearing outer ring and a bearing inner ring, wherein the first bearing outer ring is connected to the second bearing outer ring via a connecting part, and a limiting part connected to the injection molded part and used to limit the shrinkage of the injection molded part is provided on the bearing inner ring and / or the connecting part.

[0009] Furthermore, the connecting portion includes a first connecting member and a second connecting member, one end of the first connecting member and the second connecting member are respectively connected to the outer circumferential wall of the first bearing outer ring, and the other end thereof are respectively connected to the inner circumferential wall of the second bearing outer ring.

[0010] Furthermore, the limiting portion includes a connecting platform provided on at least one of the first connecting members, and a first hole for fixing the injection molded part is provided on the connecting platform, and the first hole extends downward from the top of the connecting platform to a depth and is at a distance from the bottom of the connecting platform.

[0011] Furthermore, the limiting portion further includes a second hole provided on the first connecting member for fixing with the injection molded part, and the second hole is provided through the first connecting member in a horizontal direction.

[0012] Furthermore, the limiting portion also includes a plurality of reinforcing ribs provided on at least one of the first connecting member and / or the second connecting member, and the height of the reinforcing ribs along the vertical direction is less than or equal to the height of the first connecting member and / or the second connecting member.

[0013] Furthermore, the reinforcing ribs are symmetrically arranged with respect to the first connecting member and / or the second connecting member, and the reinforcing ribs are intermittently arranged along the vertical direction.

[0014] Furthermore, the limiting portion also includes an undercut portion arranged at the top of the bearing inner ring and / or the bottom of the connecting portion, and the undercut portion includes a first undercut portion and a second undercut portion.

[0015] Furthermore, the first undercut portion is arranged on the outer peripheral wall of the bearing inner ring, the first undercut portion extends a distance toward the inner side of the bearing inner ring, the first undercut portion is arranged parallel to the bearing inner ring, the second undercut portion extends a distance toward the top of the connecting portion, and one end of the second undercut portion is connected to the first bearing outer ring.

[0016] Another basic concept of the technical solution of the utility model is:

[0017] A rear end component of a washing drum is applied with the bearing assembly as described above.

[0018] Another basic concept of the technical solution of the utility model is:

[0019] A clothes processing device is provided, which is provided with the washing tub rear end component as mentioned above.

[0020] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0021] (1) The utility model sets a limit portion on the inner ring of the bearing and / or the connecting portion to limit the shrinkage of the injection molded part at the limit portion, thereby reducing the gap between the bearing and the injection molded part, reducing the risk of water leakage, and ensuring the reliable operation of the drum washing machine.

[0022] (2) The utility model is provided with a first hole and a second hole on the connecting portion, and the injection molded part is filled into the first hole and the second hole to perform adhesion, thereby realizing a firm connection between the injection molded part and the bearing.

[0023] (3) The utility model is provided with a plurality of reinforcing ribs on the connection part, which increase the reinforcing ribs in the direction perpendicular to the shrinkage direction of the injection molded part, thereby preventing the shrinkage of the injection molded part and increasing the tensile contact area between the bearing and the injection molded part.

[0024] (4) The utility model provides an undercut structure at the top and bottom ends of the inner ring of the bearing, and adds a material feeding trough, so that it can complete a mechanical tightening of the injection molded part, which can better prevent the shrinkage of the injection molded part.

[0025] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0027] In the attached picture:

[0028] Figure 1 It is a structural schematic diagram of the utility model;

[0029] Figure 2 It is another structural schematic diagram of the utility model.

[0030] In the figure:

[0031] 1. First bearing outer ring; 12. First through hole; 13. Second through hole; 14. Rectangular groove; 15. Circular ring platform;

[0032] 2. Second bearing outer ring;

[0033] 3. Bearing inner ring;

[0034] 4. Connecting part; 41. First connecting member; 411. Connecting platform; 4111. First hole; 4121. Second hole; 42. Second connecting member; 421. Reinforcing rib; 422. Undercut part; 4221. First undercut part;

[0035] 5. Limiting part.

[0036] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0038] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They 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 direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Embodiment 1

[0041] like Figure 1 As shown, this embodiment provides a bearing assembly, including a bearing and an injection molded part (not shown) wrapping the bearing, the bearing including a first bearing outer ring 1, a second bearing outer ring 2 and a bearing inner ring 3, the first bearing outer ring 1 is connected to the second bearing outer ring 2 by a connecting part 4, and a limiting part 5 connected to the injection molded part (not shown) and used to limit the shrinkage of the injection molded part (not shown) is provided on the bearing inner ring 3 and / or the connecting part 4.

[0042] It is worth noting that in this embodiment, a limiting portion 5 is provided on the bearing inner ring 3 and / or the connecting portion 4 to prevent the shrinkage of the injection molded part, reduce the gap between the bearing and the injection molded part (not shown), reduce the risk of water leakage, and ensure the reliable operation of the drum washing machine.

[0043] In this embodiment, the first bearing outer ring 1 is set to be cylindrical, and a bearing inner ring 3 is set on the inner side of the first bearing outer ring 1. The diameter of the bearing inner ring 3 is smaller than the diameter of the first bearing outer ring 1. The bearing inner ring 3 extends downward in the vertical direction to a depth and is provided with a first through hole 12. A second through hole 13 is set from the bottom of the first through hole 12 downward through the bearing inner ring 3.

[0044] In this embodiment, the diameter of the first through hole 12 is greater than the diameter of the second through hole 13, and the depth of the first through hole 12 is less than the depth of the second through hole 13. A platform is formed at the connection between the first through hole 12 and the second through hole 13, and a rectangular groove 14 opening inward is provided on the inner peripheral wall of the bearing inner ring 3.

[0045] In this embodiment, a circular ring platform 15 is disposed at the bottom end of the first bearing outer ring 1 . The outer ring diameter of the circular ring platform 15 is larger than the diameter of the first bearing outer ring 1 , and the inner ring diameter of the circular ring platform 15 is equal to the diameter of the second through hole 13 .

[0046] In this embodiment, the connecting portion 4 includes a first connecting member 41 and a second connecting member 42 , one end of the first connecting member 41 and the second connecting member 42 are respectively connected to the outer circumferential wall of the first bearing outer ring 1 , and the other end thereof are respectively connected to the inner circumferential wall of the second bearing outer ring 2 .

[0047] In this embodiment, the connection part 4 is provided to make the connection between the first bearing outer ring 1 and the second bearing outer ring 2 tighter and more stable. At the same time, the matching assembly of the first connecting member 41 and the second connecting member 42 makes the connection between the first bearing outer ring 1 and the second bearing outer ring 2 more secure, thereby avoiding the loosening or falling off of the bearing during use, and improving the performance and service life of the entire bearing.

[0048] Furthermore, the first connecting member 41 and the second connecting member 42 are respectively arranged along the circumference of the first bearing outer ring 1, so that the rotation of the first bearing outer ring 1 is more stable, thereby improving its service life and precision, and also helping to reduce the friction and wear of the bearing, further improving its performance and reliability.

[0049] Furthermore, a connecting platform 411 is provided on at least one first connecting member 41 , and one end of the connecting platform 411 is connected to the first connecting member 41 , and the other end thereof is connected to the first connecting member 41 .

[0050] Furthermore, the diameter of the connecting platform 411 gradually increases from top to bottom, thereby improving the stability of the connecting platform 411 and making it more stable during use.

[0051] This embodiment effectively controls the shrinkage of the injection molded part by providing a limiting portion 5 on the bearing inner ring 3 and / or the connecting portion 4, thereby reducing the gap between the bearing and the injection molded part, further reducing the risk of water leakage, and ensuring the stable operation of the drum washing machine.

[0052] This embodiment also accurately designs the position of the limiting portion 5 so that it can better meet the matching requirements of the injection molded part and the bearing, thereby further improving the blocking effect.

[0053] In this embodiment, the limiting portion 5 includes a connecting platform 411 arranged on at least one first connecting member 41, and a first hole 4111 for fixing to the injection molded part is arranged on the connecting platform 411. The first hole 4111 extends downward from the top of the connecting platform 411 to a depth and is at a distance from the bottom of the connecting platform 411.

[0054] Preferably, the first hole 4111 is configured as a threaded hole. By configuring the threaded hole, the tensile contact area between the injection molded part and the bearing can be increased, thereby effectively preventing the shrinkage of the injection molded part.

[0055] In this embodiment, the limiting portion 5 further includes a second hole 4121 provided on the first connecting member 41 for fixing with the injection molded part. The second hole 4121 penetrates the first connecting member 41 in the horizontal direction.

[0056] In the present embodiment, it is further preferred that the second holes 4121 are respectively arranged at the top and the bottom of the connecting plate 412, so as to achieve adhesion to the injection molded part through different positions and prevent the shrinkage of the injection molded part.

[0057] It is worth noting that in this embodiment, a first hole 4111 and a second hole 4121 are provided on the first connecting member 41, and adhesion is performed when the injection molded part is filled into the first hole 4111 and the second hole 4121, so as to achieve a firm connection between the injection molded part and the bearing.

[0058] At the same time, in this embodiment, by setting the first hole 4111 and the second hole 4121 on the first connecting member 41, the injection molded part can be closely matched with the bearing after filling the first hole 4111 and the second hole 4121, thereby achieving a firm connection between the injection molded part and the bearing.

[0059] Embodiment 2

[0060] like Figure 2As shown, this embodiment also provides a bearing assembly, including a bearing and an injection molded part (not shown) wrapping the bearing, the bearing including a first bearing outer ring 1, a second bearing outer ring 2 and a bearing inner ring 3, the first bearing outer ring 1 is connected to the second bearing outer ring 2 by a connecting part 4, and a limiting part 5 connected to the injection molded part (not shown) and used to limit the shrinkage of the injection molded part (not shown) is provided on the bearing inner ring 3 and / or the connecting part 4.

[0061] In this embodiment, the first bearing outer ring 1 is set to be cylindrical, and a bearing inner ring 3 is set on the inner side of the first bearing outer ring 1. The diameter of the bearing inner ring 3 is smaller than the diameter of the first bearing outer ring 1. The bearing inner ring 3 extends downward in the vertical direction to a depth and is provided with a first through hole 12. A second through hole 13 is set from the bottom of the first through hole 12 downward through the bearing inner ring 3.

[0062] In this embodiment, the diameter of the first through hole 12 is greater than the diameter of the second through hole 13, and the depth of the first through hole 12 is less than the depth of the second through hole 13. A platform is formed at the connection between the first through hole 12 and the second through hole 13, and a rectangular groove 14 opening inward is provided on the inner peripheral wall of the bearing inner ring 3 for clamping and positioning.

[0063] In this embodiment, a circular ring platform 15 is disposed at the bottom end of the first bearing outer ring 1 . The outer ring diameter of the circular ring platform 15 is larger than the diameter of the first bearing outer ring 1 , and the inner ring diameter of the circular ring platform 15 is equal to the diameter of the second through hole 13 .

[0064] In this embodiment, the connecting portion 4 includes a first connecting member 41 and a second connecting member 42 , one end of the first connecting member 41 and the second connecting member 42 are respectively connected to the outer circumferential wall of the first bearing outer ring 1 , and the other end thereof are respectively connected to the inner circumferential wall of the second bearing outer ring 2 .

[0065] Furthermore, a connecting platform 411 is provided on at least one first connecting member 41 , and one end of the connecting platform 411 is connected to the first connecting member 41 , and the other end thereof is connected to the first connecting member 41 .

[0066] In this embodiment, the limiting portion 5 further includes a plurality of reinforcing ribs 421 provided on at least one first connecting member 41 and / or the second connecting member 42 , and the reinforcing ribs 421 are less than or equal to the height of the first connecting member 41 and / or the second connecting member 42 along the vertical direction.

[0067] It is worth noting that in this embodiment, a plurality of reinforcing ribs 421 are provided on the connecting portion 4 to increase the reinforcing ribs 421 in a direction perpendicular to the shrinkage direction of the injection molded part, thereby preventing the shrinkage of the injection molded part and increasing the tensile contact area between the bearing and the injection molded part.

[0068] In this embodiment, the reinforcing ribs 421 are symmetrically arranged with respect to the first connecting member 41 and / or the second connecting member 42, and / or the reinforcing ribs 421 are intermittently arranged in the vertical direction. The intermittent arrangement increases the tensile contact area between the injection molded part and the reinforcing ribs 421, thereby preventing the shrinkage of the injection molded part and allowing the injection molded part to expand at the set position.

[0069] In this embodiment, a plurality of reinforcing ribs 421 are provided on the connection part, which can increase the support strength in the shrinking direction of the injection molded part, effectively prevent the shrinkage of the injection molded part, thereby ensuring a stable connection between the bearing and the injection molded part. At the same time, by providing the reinforcing ribs 421, the tensile contact area between the bearing and the injection molded part can be increased, thereby improving the adhesion between the two.

[0070] Embodiment 3

[0071] like Figure 2 As shown, this embodiment also provides a bearing assembly, including a bearing and an injection molded part (not shown) wrapping the bearing, the bearing including a first bearing outer ring 1, a second bearing outer ring 2 and a bearing inner ring 3, the first bearing outer ring 1 is connected to the second bearing outer ring 2 by a connecting part 4, and a limiting part 5 connected to the injection molded part (not shown) and used to limit the shrinkage of the injection molded part (not shown) is provided on the bearing inner ring 3 and / or the connecting part 4.

[0072] In this embodiment, the first bearing outer ring 1 is set to be cylindrical, and a bearing inner ring 3 is set on the inner side of the first bearing outer ring 1. The diameter of the bearing inner ring 3 is smaller than the diameter of the first bearing outer ring 1. The bearing inner ring 3 extends downward in the vertical direction to a depth and is provided with a first through hole 12. A second through hole 13 is set from the bottom of the first through hole 12 downward through the bearing inner ring 3.

[0073] In this embodiment, the diameter of the first through hole 12 is greater than the diameter of the second through hole 13, and the depth of the first through hole 12 is less than the depth of the second through hole 13. A platform is formed at the connection between the first through hole 12 and the second through hole 13, and a rectangular groove 14 opening inward is provided on the inner peripheral wall of the bearing inner ring 3 for clamping and positioning.

[0074] In this embodiment, a circular ring platform 15 is disposed at the bottom end of the first bearing outer ring 1 . The outer ring diameter of the circular ring platform 15 is larger than the diameter of the first bearing outer ring 1 , and the inner ring diameter of the circular ring platform 15 is equal to the diameter of the second through hole 13 .

[0075] In this embodiment, the connecting portion 4 includes a first connecting member 41 and a second connecting member 42 , one end of the first connecting member 41 and the second connecting member 42 are respectively connected to the outer circumferential wall of the first bearing outer ring 1 , and the other end thereof are respectively connected to the inner circumferential wall of the second bearing outer ring 2 .

[0076] In this embodiment, a connecting platform 411 is disposed on at least one first connecting member 41 , and one end of the connecting platform 411 is connected to the first connecting member 41 , and the other end thereof is connected to the first connecting member 41 .

[0077] In this embodiment, the limiting portion 5 further includes an undercut portion 422 arranged on the top of the bearing inner ring 3 and / or the bottom of the connecting portion 4, and the undercut portion 422 includes a first undercut portion 4221 and a second undercut portion (not shown).

[0078] It is worth noting that in this embodiment, an undercut portion 422 is provided at the top of the bearing inner ring 3 and / or the bottom of the connecting portion 4, and a feed trough is added, so that it can complete a mechanical tightening of the injection molded part and better prevent the shrinkage of the injection molded part.

[0079] This embodiment is further preferred, the first undercut portion 4221 is arranged on the outer peripheral wall of the bearing inner ring 3, the first undercut portion 4221 extends a distance toward the inner side of the bearing inner ring 3, the first undercut portion 4221 is arranged parallel to the bearing inner ring 3, the second undercut portion (not shown) extends a distance toward the top of the connecting portion 4, and one end of the second undercut portion (not shown) is connected to the first bearing outer ring 1.

[0080] In this embodiment, a distance exists between the top of the first undercut portion 4221 and the top of the bearing inner ring 3 .

[0081] In this embodiment, the second undercut portion (not shown) is disposed at the bottom of the first connecting member 41 and / or the second connecting member 42 .

[0082] Further, a second undercut portion (not shown) is provided on the connecting plate 412 , and / or a second undercut portion (not shown) is provided on the first connecting member 41 .

[0083] During the injection molding process, due to the fluidity and shrinkage of the plastic, the injection molded parts are often prone to loosening and deformation. In this embodiment, an undercut portion 422 is provided at the top of the bearing inner ring 3 and / or the bottom of the connecting portion 4, and a feed trough is added, so that the injection molded parts can be better tightened during the injection molding process, effectively preventing the shrinkage of the injection molded parts. At the same time, the tightening effect of the undercut portion 422 can effectively prevent the injection molded parts from loosening and deformation, thereby ensuring the stability and precision of the injection molded parts.

[0084] Embodiment 4

[0085] This embodiment provides a washing drum rear end component, which is applied with the bearing assembly as described above, and also provides a clothes processing device, such as the washing drum rear end component as described above.

[0086] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A bearing assembly, comprising a bearing and an injection molded part wrapping the bearing, characterized in that: The bearing comprises a first bearing outer ring (1), a second bearing outer ring (2) and a bearing inner ring (3); the first bearing outer ring (1) is connected to the second bearing outer ring (2) via a connecting portion (4); and a limiting portion (5) connected to an injection molded part and used to limit the shrinkage of the injection molded part is provided on the bearing inner ring (3) and / or the connecting portion (4).

2. A bearing assembly according to claim 1, characterized in that: The connecting portion (4) comprises a first connecting member (41) and a second connecting member (42), wherein one end of the first connecting member (41) and the second connecting member (42) are respectively connected to the outer peripheral wall of the first bearing outer ring (1), and the other end thereof are respectively connected to the inner peripheral wall of the second bearing outer ring (2).

3. A bearing assembly according to claim 2, characterized in that: The limiting portion comprises a connecting platform (411) arranged on at least one of the first connecting members (41), and a first hole (4111) for fixing to the injection molded part is arranged on the connecting platform (411), and the first hole (4111) extends downward from the top of the connecting platform (411) to a depth and is at a distance from the bottom of the connecting platform (411).

4. A bearing assembly according to claim 2, characterized in that: The limiting portion (5) further comprises a second hole (4121) arranged on the first connecting member (41) and used for fixing with the injection molded part, and the second hole (4121) is arranged to penetrate the first connecting member (41) in a horizontal direction.

5. A bearing assembly according to claim 2, characterized in that: The limiting portion (5) further comprises a plurality of reinforcing ribs (421) provided on at least one of the first connecting member (41) and / or the second connecting member (42), wherein the height of the reinforcing ribs (421) along the vertical direction is less than or equal to the height of the first connecting member (41) and / or the second connecting member (42).

6. A bearing assembly according to claim 5, characterized in that: The reinforcing ribs (421) are symmetrically arranged with respect to the first connecting member (41) and / or the second connecting member (42), and the reinforcing ribs (421) are intermittently arranged in the vertical direction.

7. A bearing assembly according to claim 1, characterized in that: The limiting portion (5) further comprises an undercut portion (422) arranged at the top of the bearing inner ring (3) and / or the bottom of the connecting portion (4), and the undercut portion (422) comprises a first undercut portion (4221) and a second undercut portion.

8. A bearing assembly according to claim 7, characterized in that: The first undercut portion (4221) is arranged on the outer peripheral wall of the bearing inner ring (3), the first undercut portion (4221) extends a distance toward the inner side of the bearing inner ring (3), the first undercut portion (4221) is arranged parallel to the bearing inner ring (3), the second undercut portion extends a distance toward the top of the connecting portion (4), and one end of the second undercut portion is connected to the first bearing outer ring (1).

9. A rear end component of a washing drum, characterized in that: The invention relates to a bearing assembly as claimed in any one of claims 1 to 8.

10. A clothes processing device, characterized in that: The washing drum rear end component as claimed in claim 9 is used.

Images