Laundry treating apparatus

Abstract

The utility model provides clothes treatment equipment which comprises an outer cylinder, an inner cylinder, a transmission shaft, a bearing and a second bush. The transmission shaft is provided with a transmission end, the transmission end is connected with the inner cylinder so as to drive the inner cylinder to rotate, and the transmission end is sleeved with a first lining; the bearing is installed on the outer cylinder and arranged on the transmission shaft in a sleeving mode, and in the axial direction of the transmission shaft, a gap is formed between the bearing and the first lining in a spaced mode; the second bush is arranged in the gap and abuts against the bearing and the first bush. According to the clothes treating equipment, the second bush is arranged between the bearing and the first bush and abuts against the bearing and the first bush, the effect of limiting axial jumping of the transmission shaft can be achieved, and therefore noise is reduced, and the risk of bearing damage is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of household appliances, and in particular to a clothing processing device. Background Art

[0002] The transmission shaft is one of the important components of the clothing processing equipment. In the clothing processing equipment, one end of the transmission shaft is connected to the inner drum, and the other end is connected to the motor, so that when the motor is running, it plays the role of transmitting driving force and driving the inner drum to rotate. Due to the existence of manufacturing tolerances, there is inevitably a gap between the bushing and the bearing on the transmission shaft, which makes it easy for the transmission shaft to have axial runout when the inner drum rotates, resulting in the risk of noise and bearing damage in the clothing processing equipment. Utility Model Content

[0003] The utility model provides a clothes processing device to solve the technical problem that the transmission shaft is prone to axial runout.

[0004] To achieve the above-mentioned purpose, the clothing processing device proposed in this application includes:

[0005] outer cylinder;

[0006] An inner cylinder, arranged in the outer cylinder;

[0007] A transmission shaft, comprising a transmission end, the transmission end being connected to the inner cylinder to drive the inner cylinder to rotate, and a first bushing being sleeved on the transmission end;

[0008] a bearing, mounted on the outer cylinder and sleeved on the transmission shaft, wherein a gap is formed between the bearing and the first bushing in the axial direction of the transmission shaft; and

[0009] The second bushing is disposed in the gap and abuts against the bearing and the first bushing respectively.

[0010] Optionally, in one embodiment, the bearing includes an inner ring and an outer ring that roll with each other, the outer ring is connected to the outer cylinder, the inner ring is arranged on the transmission shaft, and the second bushing abuts against the inner ring.

[0011] Optionally, in one embodiment, the second bushing has two side surfaces arranged opposite to each other in its axial direction;

[0012] At least one of the side surfaces is provided with a plurality of protrusions.

[0013] Optionally, in one embodiment, the connection between the bottom of the protrusion and the side surface is in an arc transition.

[0014] Optionally, in one embodiment, the convex portion has a cross section parallel to the side surface, and a projection area of ​​the cross section on the side surface gradually decreases in a direction from the side surface to away from the side surface.

[0015] Optionally, in one embodiment, the protrusion is a protrusion.

[0016] Optionally, in one embodiment, the protrusion is a strip-shaped rib extending radially along the second bushing, and a plurality of the protrusions are arranged at intervals along the circumferential direction of the second bushing.

[0017] Optionally, in one embodiment, the width of the strip-shaped convex rib gradually decreases in a direction from the side surface to away from the side surface, and the top of the strip-shaped convex rib is a plane or an arc surface.

[0018] Optionally, in one embodiment, the second bushing includes:

[0019] An annular sleeve body, sleeved on the transmission shaft, the annular sleeve body having a buffer surface facing the first bushing or the bearing;

[0020] The buffer portion is arranged on the buffer surface, and a plurality of the convex portions are formed on a side of the buffer portion away from the buffer surface.

[0021] Optionally, in one embodiment, the buffer portion and the annular sleeve are integrally formed.

[0022] Optionally, in one embodiment, the buffer portion is an elastomer, and the buffer portion is bonded to the annular sleeve.

[0023] In the clothing processing device provided in the present application, a second bushing is arranged between the bearing and the first bushing, and abuts against the bearing and the first bushing respectively, which can limit the axial runout of the transmission shaft, thereby improving noise and reducing the risk of bearing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 This is a schematic cross-sectional structure diagram of an embodiment of a clothing processing device of the present application;

[0026] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0027] Figure 3 for Figure 1 A schematic diagram of the structure of the second bushing;

[0028] Figure 4 is a front view of the second bushing;

[0029] Figure 5 is a side view of the second bushing;

[0030] Description of Figure Numbers:

[0031] Reference numeral Name Reference numeral Name Reference numeral Name 100 Laundry treatment device 4 Drive shaft 72 Buffer part 1 Outer cylinder 5 First bushing 8 Convex part 2 Inner cylinder 6 Oil seal 8a Strip-shaped convex rib 31 Bearing seat 7 Second bushing 32 Bearing 71 Annular sleeve

[0032] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0034] The embodiment of the present application provides a clothing processing device 100, including an outer drum 1, an inner drum 2, a transmission shaft 4, a bearing 32 and a second bushing 7. The clothing processing device 100 can be a washing machine, a dryer or a washing and drying machine, etc. The clothing processing device 100 proposed in the embodiment of the present application can solve the problem that the transmission shaft 4 is prone to axial runout. The following will be described in conjunction with the accompanying drawings.

[0035] In the embodiments of the present application, Figure 1 and Figure 2 As shown, the clothing processing device 100 includes an outer cylinder 1, an inner cylinder 2, a transmission shaft 4, a bearing 32 and a second bushing 7. The inner cylinder 2 is arranged in the outer cylinder 1; the transmission shaft 4 has a transmission end, which is connected to the inner cylinder 2 to drive the inner cylinder 2 to rotate, and a first bushing 5 is sleeved on the transmission end; the bearing 32 is installed on the outer cylinder 1 and sleeved on the transmission shaft 4, and a gap is formed between the bearing 32 and the first bushing 5 in the axial direction of the transmission shaft 4; the second bushing 7 is arranged in the gap and abuts against the bearing 32 and the first bushing 5 respectively.

[0036] In the clothing processing device 100 provided in the present application, a second bushing 7 is arranged between the bearing 32 and the first bushing 5, and abuts against the bearing 32 and the first bushing 5 respectively, which can limit the axial runout of the transmission shaft 4, thereby improving noise and reducing the risk of damage to the bearing 32.

[0037] Specifically, the outer cylinder 1 is used to hold water. The inner cylinder 2 is rotatably installed inside the outer cylinder 1, and the inner cylinder 2 is used to hold clothes. The transmission shaft 4 passes through the outer cylinder 1. One end of the transmission shaft 4 is used for driving connection with a motor (not shown in the figure), and the other end is a driving end, which is used to transmit the driving force output by the motor to the inner cylinder 2. When the transmission shaft 4 is driven by the motor to rotate around the axis of the transmission shaft 4, the inner cylinder 2 can be driven to rotate around the axis of the transmission shaft 4.

[0038] A bearing 32 is installed on the outer cylinder 1, and the transmission shaft 4 passes through the bearing 32. In some embodiments, a bearing seat 31 is further installed on the outer cylinder 1. An installation space is defined inside the bearing seat 31, and the bearing 32 is installed in the installation space. An oil seal 6 is installed at one end of the bearing seat 31 facing the inner cylinder 2. The oil seal 6 can seal the installation space to prevent water from entering the bearing seat 31. The oil seal 6 is annular and defines an annular hole. The driving end passes through the annular hole and is fixedly connected to the inner cylinder 2 after passing through the annular hole. The first bushing 5 is sleeved on the driving end, and in the radial direction of the transmission shaft 4, the first bushing 5 is located between the oil seal 6 and the transmission shaft 4. The first bushing 5 can be made of metal material. It can be understood that in this article, the radial direction refers to the direction along the radius of the reference object (for example, in the radial direction of the transmission shaft 4, the reference object is the transmission shaft 4), and the axial direction refers to the direction along the central axis of the reference object.

[0039] In the direction along the axis of the transmission shaft 4 and away from the driving end, the first bushing 5 and the bearing 32 are arranged at intervals in sequence, and a gap is formed between them. The second bushing 7 abuts between the first bushing 5 and the bearing 32, so as to limit the axial movement of the bearing 32. In some embodiments, the second bushing 7 is in interference fit with the gap, so that the bearing 32 can be subjected to radial and axial restraint forces, so as to better fix the bearing 32, avoid the bearing 32 from jumping, and is more conducive to improving noise and protecting the bearing 32.

[0040] The bearing 32 includes an inner ring and an outer ring that are in rolling fit with each other. The outer ring is connected to the outer cylinder 1 and is relatively fixed to the outer cylinder 1; the inner ring is arranged on the transmission shaft 4 and is relatively fixed to the transmission shaft 4. The second bushing 7 abuts between the inner ring and the first bushing 5 to avoid affecting the bearing 32.

[0041] In other embodiments, the second bushing 7 is in interference fit with the inner ring.

[0042] In some cases, due to manufacturing tolerances or the pressure caused by interference fit, the second bushing 7 may be subjected to a large extrusion force, resulting in it being prone to cracking. In this regard, in some embodiments, such as Figures 3 to 5As shown, in the second bushing 7, at least one of the side surfaces is provided with a plurality of protrusions 8. The side surfaces refer to two side surfaces of the second bushing 7 that are arranged opposite to each other in the axial direction of the second bushing 7, and the two side surfaces are arranged toward the first bushing 5 and the bearing 32, respectively. For the convenience of description, the two side surfaces are named as the first side surface and the second side surface, respectively. A plurality of protrusions 8 may be provided only on the first side surface, or a plurality of protrusions 8 may be provided only on the second side surface, or a plurality of protrusions 8 may be provided on both the first side surface and the second side surface. When a plurality of protrusions 8 are provided on both side surfaces at the same time, the number of protrusions 8 on the two side surfaces may be the same or different. When the second bushing 7 is subjected to excessive force, the protrusions 8 are prone to plastic deformation, thereby preventing the second bushing 7 from cracking.

[0043] In some embodiments, the connection between the bottom of the convex portion 8 and the side surface where the convex portion 8 is located is in an arc transition. The bottom of the convex portion 8 is connected to the side surface with an R angle, which helps to improve the stability of the convex portion 8, thereby better playing its role in preventing the second bushing 7 from cracking.

[0044] In some embodiments, the convex portion 8 has a cross section parallel to the side surface, and the projected area of ​​the cross section on the side surface gradually decreases in the direction from the side surface to the direction away from the side surface. That is, the convex portion 8 has a trend of gradually shrinking in the direction from the side surface to the direction away from the side surface, so that it can be more stable when subjected to pressure, and it is not easy to tilt when it undergoes plastic deformation, thereby affecting the uniformity of the restriction effect on various parts of the bearing 32.

[0045] The specific shape of the convex portion 8 can be realized in various forms, for example, it can be one or more of a convex point, an annular convex rib and a strip convex rib 8a.

[0046] In some embodiments, the convex portion 8 is a convex point. The convex portion 8 can be a hemispherical convexity, a conical convexity, a convexity of a frustum structure, etc. Further, when the convex portion 8 is a convexity, its top is an arc surface, which can avoid wearing the first bushing 5 or the bearing 32. Multiple convex portions 8 can be evenly or unevenly distributed on the side.

[0047] In other embodiments, the convex portion 8 is configured as an annular convex rib, which is arranged along the circumferential direction of the second bushing 7, and a plurality of the convex portions 8 are arranged at intervals along the radial direction of the second bushing 7, thereby presenting a plurality of concentric circles on the side surface. Furthermore, when the convex portion 8 is an annular convex rib, the width of the annular convex rib gradually decreases in the direction away from the side surface, and the top of the annular convex rib is an arc surface, so that the stability of the annular convex rib can be improved and the wear of the annular convex rib on the first bushing 5 or the bearing 32 can be reduced. It can be understood that the width of the annular convex rib refers to the dimension value in the radial direction of the annular convex rib.

[0048] In still other embodiments, the convex portion 8 is provided as a strip-shaped rib 8a, and the strip-shaped rib 8a can extend in any direction. Exemplarily, in one embodiment, the strip-shaped rib 8a extends along the radial direction of the second bushing 7, and a plurality of the convex portions 8 are arranged at intervals along the circumferential direction of the second bushing 7, so as to be radially distributed on the side surface as a whole. This structure is simple and easy to manufacture, and can abut against the first bushing 5 or the bearing 32 very evenly. Further, when the convex portion 8 is a strip-shaped rib 8a, the width of the strip-shaped rib 8a gradually decreases in the direction away from the side surface, and the top of the strip-shaped rib 8a is an arc surface or a flat surface. In this way, the stability of the strip-shaped rib 8a can be improved, and the wear on the first bushing 5 or the bearing 32 can be reduced. It can be understood that the width of the strip-shaped rib 8a refers to the dimension value in the direction perpendicular to the extending direction of the strip-shaped rib 8a.

[0049] On the same side surface, a plurality of convex portions 8 can be set to the same shape or different shapes. For example, a plurality of convex points and a plurality of strip-shaped ribs 8a can be provided on the same side surface at the same time.

[0050] The second bushing 7 is integrally in a ring structure. Specifically, in some embodiments, the second bushing 7 includes a sleeve body and a buffer portion 72. Among them, the sleeve body is sleeved on the transmission shaft 4, and the sleeve body has a buffer surface facing the first bushing 5 or the bearing 32; the buffer portion 72 is provided on the buffer surface, and a plurality of the convex portions 8 are formed on the side of the buffer portion 72 facing away from the buffer surface. It can be understood that when a plurality of convex portions 8 are only provided on the side surface facing the first bushing 5, this side surface is the buffer surface, and there is only one buffer portion 72 and it is provided on this buffer surface; similarly, when a plurality of convex portions 8 are only provided on the side surface facing the bearing 32, this side surface is the buffer surface, and there is only one buffer portion 72 and it is provided on this buffer surface; when convex portions 8 are provided on both side surfaces, both side surfaces are buffer surfaces, the buffer portions 72 are correspondingly provided in two, and are respectively provided on the two buffer surfaces. The buffer portion 72 can be provided in a ring structure, which is composed of a ring body and a plurality of convex portions 8 formed on the ring body; or it can be composed only of a plurality of convex portions 8.

[0051] In some embodiments, the buffer portion 72 is an elastomer, and the buffer portion 72 is bonded to the ring-shaped sleeve body 71. Specifically, the buffer portion 72 can be made of rubber material, and the ring-shaped sleeve body 71 can be made of rubber material or plastic material.

[0052] In some embodiments, the buffer portion 72 may be made of the same material as the annular sleeve 71. For example, it may be made of plastic or rubber. The buffer portion 72 and the annular sleeve 71 are integrally formed, which has better integrity and helps the buffer portion 72 play a better buffering role to prevent the second bushing 7 from cracking. In a specific embodiment, both the buffer portion 72 and the annular sleeve 71 are made of polytetrafluoroethylene, which is heat-resistant, cold-resistant and has a self-lubricating effect.

[0053] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments. In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0054] The technical solutions provided by the embodiments of the present application have been introduced in detail above. Specific examples are used herein to elaborate on the principles and implementation manners of the present application. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A laundry treatment device, characterized in that, Comprising: An outer cylinder; An inner cylinder, disposed within the outer cylinder; A transmission shaft having a transmission end, the transmission end being connected to the inner cylinder to drive the inner cylinder to rotate, and a first bushing being sleeved on the transmission end; A bearing, mounted on the outer cylinder and sleeved on the transmission shaft, and a gap being formed at an interval between the bearing and the first bushing in the axial direction of the transmission shaft; and A second bushing, disposed within the gap and respectively abutting against the bearing and the first bushing.

2. The laundry treating apparatus according to claim 1, wherein The bearing includes an inner ring and an outer ring that are in rolling fit with each other, the outer ring is connected to the outer cylinder, the inner ring is disposed on the transmission shaft, and the second bushing abuts against the inner ring.

3. The laundry treatment device according to claim 1 or 2, characterized in that The second bushing has two side surfaces that are oppositely disposed in its axial direction; A plurality of convex portions are provided on at least one of the side surfaces.

4. The laundry treating apparatus according to claim 3, wherein The connection between the bottom of the convex portion and the side surface is in arc transition.

5. The laundry treatment device according to claim 3, characterized in that, The convex portion has a cross-section parallel to the side surface, and in a direction away from the side surface from the side surface, the projected area of the cross-section on the side surface gradually decreases.

6. The laundry treating apparatus according to claim 3, wherein The convex portion is a convex point.

7. The laundry treating apparatus according to claim 3, wherein, The convex portion is a strip-shaped convex rib extending in the radial direction of the second bushing, and a plurality of the convex portions are spaced apart in the circumferential direction of the second bushing.

8. The laundry treating apparatus according to claim 3, wherein, The second bushing includes: An annular sleeve body, sleeved on the transmission shaft, and the annular sleeve body has a buffer surface facing the first bushing or the bearing; and A buffer portion, disposed on the buffer surface, and a plurality of the convex portions are formed on a side of the buffer portion facing away from the buffer surface.

9. The laundry treating apparatus according to claim 8, wherein, The buffer portion is integrally formed with the annular sleeve body.

10. The laundry treating apparatus according to claim 8, wherein, The buffer portion is an elastomer, and the buffer portion is bonded to the annular sleeve body.

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