CN112899998A

CN112899998A - Drum type washing machine washing drum assembly and drum type washing machine

Info

Publication number: CN112899998A
Application number: CN202110039109.6A
Authority: CN
Inventors: 周倍恒; 印凯; 戴付兵; 陈富科; 李琦
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-06-04

Abstract

The invention belongs to the technical field of washing machines, and particularly discloses a washing drum assembly of a drum washing machine and the drum washing machine, wherein the washing drum assembly of the drum washing machine comprises: the outer barrel is provided with end walls at two axial ends, through holes are formed in the two end walls, and an outer opening is formed in the side peripheral wall of the outer barrel; the inner cylinder is rotatably arranged in the outer cylinder, rotating shafts are arranged at two axial ends of the inner cylinder and penetrate through holes in two end walls of the outer cylinder, an inner opening is formed in the side peripheral wall of the inner cylinder, and the inner opening can be aligned with the outer opening through rotation of the inner cylinder; the vibration reduction assemblies comprise two vibration reduction assemblies which are respectively arranged on two sides of the outer barrel and are rotatably connected with the rotating shaft, each vibration reduction assembly comprises a vibration absorber, a damper and a bearing seat, the vibration absorbers and the dampers are connected with the bearing seats, and the bearing seats are used for supporting the rotating shaft. The invention can reduce the vibration generated when the inner cylinder runs and transmit the vibration to the outer cylinder.

Description

Drum type washing machine washing drum assembly and drum type washing machine

Technical Field

The invention relates to the technical field of washing machines, in particular to a washing drum assembly of a drum washing machine and the drum washing machine.

Background

With the development of the washing machine industry, the living standard of people is improved, and the drum washing machine occupies a larger and larger proportion in the washing machine market. As for the washing machine drum, the spring hanging drum form is mostly adopted, so that the whole drum part is hung on the washing machine frame, and the form has higher requirement on the strength of the washing machine frame; and the requirement for the space above the roller is higher; meanwhile, vibration is easily transmitted to the upper part of the washing machine when the washing machine is used for dewatering, vibration and noise of the washing machine are amplified, and bad user experience is brought.

For solving the cylinder vibration problem, this kind of cylinder damping more adopts the hanging spring form among the prior art for example, hangs cylinder part with 4 springs, realizes cylinder dynamic balance through selecting for use the spring specification, nevertheless can influence the installation space of other structures, is difficult for realizing compact structure.

In the prior art, the drum is directly connected with a washing machine base, and the inner drum is rotated to realize washing, so that the washing machine is mainly suitable for industrial washing machines, and is not suitable for household washing machines because the distance between the inner drum and the outer drum is large and the integral volume is large.

Disclosure of Invention

Based on this, aiming at the prior art, the invention provides a washing drum assembly of a drum washing machine and the drum washing machine, which are at least used for solving the technical problem of more vibration transmission ratio of an inner drum and an outer drum in the prior art.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

in a first aspect, the present invention provides a drum assembly for a drum washing machine, comprising:

the outer barrel is provided with end walls at two ends in the axial direction, through holes are formed on the two end walls,

an outer opening is formed on the side peripheral wall of the outer cylinder;

the inner cylinder is rotatably arranged in the outer cylinder, rotating shafts are arranged at two axial ends of the inner cylinder and penetrate through holes in two end walls of the outer cylinder,

an inner opening is formed in the side peripheral wall of the inner cylinder, and the inner opening can be aligned with the outer opening through rotation of the inner cylinder;

the two vibration damping components are respectively arranged on two sides of the outer cylinder in the axial direction and are rotationally connected with the rotating shaft,

the vibration reduction assembly comprises a vibration absorber, a damper and a bearing seat, the vibration absorber and the damper are connected with the bearing seat, and the bearing seat is used for supporting the rotating shaft.

Further optionally, the vibration damping assembly comprises one said vibration absorber and two said dampers, both said dampers being disposed on both sides of said vibration absorber,

in the mounted state, the shock absorber and the damper are both located on the underside of the bearing block.

Further optionally, the axes of the shock absorber and the damper lie in the same plane.

Further optionally, the drum washing machine washing drum assembly further comprises: the sealing rings are arranged in two, the two sealing rings are respectively sleeved on the rotating shaft, the outer ring of each sealing ring is connected with the through hole in the end wall of the outer barrel in a sealing mode, and the inner ring of each sealing ring is connected with the bearing seat in a sealing mode.

Further optionally, a plurality of circles of concentric protrusions are formed on the sealing ring, and the concentric protrusions form a telescopic structure, so that the sealing ring can deform in the radial direction.

Further optionally, the outer edge of the sealing ring is provided with a first annular flange along its circumference,

a first annular mounting groove is formed on the end wall of the outer cylinder along the circumferential direction of the through hole,

the first annular flange is used for being embedded into the first annular mounting groove to realize sealing connection with the first annular flange.

Further optionally, a second annular mounting groove is provided on the bearing seat,

and a second annular flange is formed on the inner edge of the sealing ring along the circumferential direction of the sealing ring, and the second annular flange is embedded into the second annular mounting groove and is in sealing connection with the second annular mounting groove.

Further optionally, the washing drum assembly of the drum washing machine further comprises a bearing and an oil seal, wherein the bearing is located on one side of the vibration reduction assembly facing the outer drum, the bearing is arranged in the bearing seat and rotatably supports the rotating shaft, and the oil seal is used for the rotating shaft to penetrate through and is in sealing connection with the bearing seat.

Further optionally, the outer circumference of the outer cylinder is provided with a plurality of pairs of ribs extending in the radial direction, and a gap between each pair of ribs is used for arranging a working part or a cable therebetween.

Further optionally, a connecting portion is provided on the outer cylinder, and the connecting portion is used for fixed connection of the outer cylinder.

Further optionally, a closing door is provided on the inner barrel, the closing door being provided on a side peripheral wall of the inner barrel for closing the inner opening.

In a second aspect, the present invention provides a drum washing machine, comprising a housing and the above-mentioned drum washing machine washing drum assembly,

the outer cylinder is directly and fixedly connected with the shell,

the inner cylinder is connected with the shell through the vibration reduction assembly.

Compared with the prior art, the invention has the beneficial effects that: the drum washing machine of the invention enables the inner cylinder to be independently supported and damped relative to the outer cylinder by arranging the damping components at the two axial ends of the inner cylinder respectively, reduces or even eliminates the influence of centrifugal eccentric vibration of the inner cylinder and clothes on the whole washing machine, enables the outer cylinder to be in a relatively static state without vibrating along with the inner cylinder, does not need to consider a vibration gap, and can tightly install working parts and cables on the periphery of the outer cylinder and even on the periphery of the outer cylinder, thereby reducing the whole volume and height of the drum washing machine, reducing the volume of a pipeline, optimizing the design of the pipeline and ensuring high control stability.

Drawings

In order that the present disclosure may be more readily and clearly understood, the following detailed description of the present disclosure is provided in connection with specific embodiments thereof, which are included in the accompanying drawings, and the description of which is intended to illustrate and not limit the present disclosure, wherein:

FIG. 1 is a front view of an exploded state of an embodiment of a drum washing machine according to the present invention;

FIG. 2 is a front view of the drum washing machine according to the embodiment of the present invention in an exploded state;

FIG. 3 is a front view of the drum washing machine according to the embodiment of the present invention in an assembled state;

FIG. 4 is a left side view of the embodiment corresponding to FIG. 3;

FIG. 5 is a right side view of the embodiment corresponding to FIG. 3;

FIG. 6 is a schematic cross-sectional view of a seal ring;

fig. 7 is a schematic structural view of the vibration damping module.

The reference numbers in the figures denote:

10-an outer cylinder; 11-an outer opening; 12-a through hole; 13-convex ribs; 20-inner cylinder; 21-inner opening; 30-a drive shaft; 40-supporting the shaft; 50-a first damping assembly; 60-a second damping assembly; 51. 61-a bearing seat; 51A, 61A-support chamber; 51B, 61B-a second annular mounting groove; 52. 62-a shock absorber; 53. 63-a damper; 70-a drive device; 71-a motor stator; 72-a motor rotor; 80-a sealing ring; 81-concentric protrusions; 82-ring hole; 83. a first annular flange; 84. a second annular flange; 90-a bearing; 100-oil seal.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, an embodiment of the present invention provides a washing tub assembly of a drum washing machine, including an outer tub 10, an inner tub 20, a damping assembly and a driving device 70, the outer tub 10 being provided at a radial outer circumference thereof with an outer opening 11, the inner tub 20 being rotatably provided in the outer tub 10, the radially outer periphery of the inner barrel 20 is provided with an inner opening 21 which is alignable with the outer opening 11, it being understood that, the outer opening 11 is sealed by an openable closure door (not shown), which, during normal operation of the drum washing machine, the closure door is closed, thereby sealing the drum 20, and when it is desired to insert or remove laundry with respect to the drum 20, the closure door is opened, in which condition, the inner opening 21 is aligned with the outer opening 11, and the outer opening 11 is maintained aligned with a laundry taking and putting port (not shown) provided in a vertical direction of the cabinet, thereby facilitating a user to take the laundry.

The through holes 12 are respectively formed at two axial ends of the outer cylinder 10, and a rotating shaft is respectively arranged at two axial ends of the inner cylinder 20 and used for supporting the inner cylinder 20, wherein one of the two rotating shafts is a transmission shaft 30 and used for being connected with the driving device 70, the other rotating shaft is a supporting shaft 40, and the transmission shaft 30 and the supporting shaft 40 are respectively arranged in the corresponding through holes 12 in a penetrating manner.

The vibration damping members include two vibration damping members, which are respectively disposed at two ends of the outer cylinder 10 and are respectively rotatably connected to a rotating shaft, for example, the vibration damping members include a first vibration damping member 50 and a second vibration damping member 60, the first vibration damping member 50 and the second vibration damping member 60 are respectively disposed adjacent to two ends of the outer cylinder 10 in the axial direction and respectively rotatably support the transmission shaft 30 and the support shaft 40, the transmission shaft 30 and the support shaft 40 can provide two fulcrums to the inner cylinder 20 in the axial direction to support the inner cylinder, and the transmission shaft 30 and the support shaft 40 are connected to the corresponding vibration damping members in a manner of passing through the through hole 12 without contacting the outer cylinder 10, so that the vibration amplitude of the inner cylinder 20 is prevented from being transmitted to the outer cylinder 10 to cause. The first vibration damping assembly 50 is disposed between the driving device 70 and the outer tub 10, the transmission shaft 30 is inserted into the first vibration damping assembly 50 and is in driving connection with the driving device 70, and since the rotation of the inner tub 20 receiving the driving force of the driving device 70 and the vibration generated by the operation of the driving device 70 are substantially absorbed by the first vibration damping assembly 50 and the second vibration damping assembly 60, the vibration transmitted to the cabinet is greatly reduced or even substantially eliminated, thereby greatly reducing the noise generated when the drum washing machine operates. In summary, since the two axial ends of the inner drum 20 of the drum washing machine of the present invention are respectively supported by the transmission shaft 30 and the first vibration damping assembly 50, and the support shaft 40 and the second vibration damping assembly 60, the outer drum 10 is not subjected to vibration of the inner drum 20 to cause vibration amplitude, so that it is beneficial to fix working parts, controllers, pipelines or/and cables on the outer drum 10 itself or at a position very close to the outer drum 10, and no or few vibration gaps are required to be reserved, thereby contributing to reducing the overall volume and height of the drum washing machine, reducing the volume and optimizing the design of the pipelines, and ensuring the normal operation of the controllers to improve the control stability of the drum washing machine.

Referring to fig. 1 and 2 with emphasis, in one embodiment, the drum washing machine further includes a pair of sealing rings 80 fixed in one of the through holes 12, respectively, and having ring holes 82, and the driving shaft 30 and the supporting shaft 40 are inserted into the corresponding ring holes 82. In this way, each sealing ring 80 improves the sealing performance for the corresponding through hole 12, and improves the stability of the operation of the inner cylinder 20.

Referring to fig. 1 and 6, in one embodiment, each sealing ring 80 is provided with a plurality of circles of concentric protrusions 81, and the vibration of the transmission shaft 30, which may be transmitted to the sealing ring 80, can be buffered by the plurality of circles of concentric protrusions 81, so as to further prevent the outer cylinder 10 from being affected by the vibration of the inner cylinder 20. Preferably, the concentric protrusions 81 are constructed in a corrugated structure, so that the expansion range of the sealing ring 80 in the radial direction is larger, vibration during operation of the inner cylinder can be accommodated, and the sealing effect is ensured.

Further, the outer edge of the sealing ring 80 is provided with a first annular flange 83 along the circumferential direction thereof, the end wall of the outer cylinder 10 is provided with a first annular mounting groove along the circumferential direction of the through hole 12, and the first annular flange 83 is used for being embedded into the first annular mounting groove to realize sealing connection therewith. The inner edge of the sealing ring 80 is formed with a second annular flange 84 along its circumference, said second annular flange 84 being adapted to be inserted into and sealingly engage the second annular mounting groove.

Referring with emphasis to fig. 2, in one embodiment, each of the first and second

vibration damping assemblies

50, 60 is provided with a bearing

seat

51, 61 having a

support cavity

51A, 61A and a second

annular mounting groove

51B, 61B surrounding the outer periphery of the

support cavity

51A, 61A, each of the second

annular mounting grooves

51B, 61B and a ring hole 82 of a corresponding seal ring 80 can be connected in a sealing manner by clamping, screwing or the like, the transmission shaft 30 and the support shaft 40 are respectively inserted into the

corresponding support cavities

51A, 61A, therefore, by the sealing connection of the second

annular mounting grooves

51B, 61B and the annular hole 82, the sealing performance of the corresponding through hole 12 is improved, the first vibration damping assembly 50 and the second vibration damping assembly 60 are reliably connected with the transmission shaft 30 and the support shaft 40 respectively and exert enough supporting force, so that vibration of the drive shaft 30 and the support shaft 40, which is brought about by the operation of the inner tube 20, can be effectively damped.

In one embodiment, the drum washing machine further comprises a bearing 90 and an oil seal 100 at a side of the first vibration damping assembly 50 facing the outer tub 10, wherein the bearing 90 is disposed in the support cavity 51A and rotatably supports the transmission shaft 30, the bearing 90 functions to support the entire power running system when the transmission shaft 30 transmits power, and the oil seal 100 allows the transmission shaft 30 to pass through and is in sealed connection with the support cavity 51A, so that the oil seal 100 keeps the bearing 90 sealed in the support cavity 51A in a lubrication manner.

In one embodiment, the inner and

outer barrels

20, 10 have the same central axis about which the drive shaft 30, support shaft 40 and seal ring 80 are centered, so that the inner barrel 20 is well positioned relative to the outer barrel 10 and is relatively independently supported and damped by each damping assembly.

In one embodiment, the outer tub 10 is fixedly connected directly to the cabinet, and since the outer tub 10 is hardly vibrated by the inner tub 20, the outer tub 10 can be fixedly connected directly inside the drum washing machine, for example, by a screw connection without providing a vibration damping member, thereby saving costs.

Referring to fig. 1 with emphasis, in one embodiment, the outer circumference of the outer tub 10 is provided with a plurality of pairs of ribs 13 extending in a radial direction, and a gap between each pair of ribs 13 is provided for a working part or a cable such as a power supply line or a data line to be disposed therebetween, so that, since the amplitude of the inner tub 20 is not transmitted to the outer tub 10 to cause its vibration, not only the working part and the cable are not displaced by disposing the working part or the cable directly on the outer tub 10 and being limited by the pair of ribs 13, but also the overall volume and height of the cabinet are further reduced since the vibration gap is eliminated and the disposition space of the working part or the cable is saved.

In one embodiment, the driving device 70 includes a DD motor and a belt motor, so that the drum washing machine of the present invention can adopt different driving devices according to actual needs and obtain the same vibration reduction effect, when the driving device 70 is the DD motor, the DD motor includes a motor stator 71 and a motor rotor 72, the motor rotor 72 is driven by the transmission shaft 30 to transmit a rotation force to the inner drum 20, and the inner drum 20 is driven by the DD motor to rotate at a high speed or a low speed to realize different clothes treatment modes.

With particular reference to fig. 3, 4, 5 and 7, in one embodiment each damping assembly comprises a plurality of cylindrical dampers, i.e.: a vibration absorber 52, 62 and a pair of dampers 53, 63 which are disposed at both sides of the vibration absorber 52, 62 at the same angle of, for example, 30 °, the other end of each vibration absorber 52, 62 and each damper 53, 63 is provided with a fixed end fixed to the casing, at which a stud or bolt, etc. can be provided and fixed to a screw hole corresponding to the casing, since the inner tube 20 contains laundry, which is unbalanced in the inner tube 20 when the laundry is rotated, and the unbalance causes the amplitude of vibration of the inner tube 20 to be particularly protruded when the inner tube is rotated at a high speed, in which case the amplitude of vibration is reduced or even eliminated by each cylindrical damper, in particular, the amplitude of vibration is transmitted to the cylindrical damper of the first vibration attenuation module 50 by the bearing 90 disposed in the first vibration attenuation module 50, and, through repeated tests by providing each cylindrical damper with the vibration absorber 52, 62 and the damper 53, 63 disposed at the same angle as, the vibration damping effect is provided to the transmission shaft 30 and the support shaft 40 in both the horizontal direction and the vertical direction, and thus the vibration of the inner tub 20 and the driving device 70 is greatly attenuated or even substantially eliminated when being transmitted to the cabinet after being subjected to the vibration damping treatment by the cylindrical vibration dampers, thereby greatly reducing the noise generated during the operation of the drum washing machine.

In one embodiment, each fixed end is located at the same horizontal plane and fixed with the bottom of the casing, since the whole weight of the drum washing machine is concentrated on the outer drum 10 and the inner drum 20 and the accessory parts located thereon, and the stability is higher according to the object with the lower gravity center, the outer drum 10, the inner drum 20 and each vibration damping component can be located at the position with the lower gravity center inside the drum washing machine by fixing each fixed end with the bottom of the casing, thereby greatly helping the dynamic stability of the washing machine, not causing the casing to vibrate and make noise greatly, and greatly optimizing the noise vibration of the whole machine.

The relative arrangement of the components set forth in these embodiments does not limit the scope of the invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drum assembly for a drum type washing machine, comprising:

an outer opening is formed on the side peripheral wall of the outer cylinder;

2. A drum assembly for a drum washing machine according to claim 1, characterized in that the vibration damping assembly comprises one vibration damper and two dampers, the two dampers being disposed at both sides of the vibration damper,

3. A drum assembly for a drum type washing machine according to claim 2, characterized in that the axes of the vibration absorber and the damper are located on the same plane.

4. A drum assembly for a drum type washing machine as claimed in claim 3, wherein the drum assembly further comprises: the sealing rings are arranged in two, the two sealing rings are respectively sleeved on the rotating shaft, the outer ring of each sealing ring is connected with the through hole in the end wall of the outer barrel in a sealing mode, and the inner ring of each sealing ring is connected with the bearing seat in a sealing mode.

5. A drum assembly for a drum type washing machine according to claim 4, characterized in that a plurality of circles of concentric protrusions are formed on the sealing ring, and the concentric protrusions form a telescopic structure, so that the sealing ring can be deformed in the radial direction.

6. A drum assembly for a drum type washing machine according to claim 5, characterized in that the outer edge of the sealing ring is provided with a first annular flange along its circumference,

7. A drum assembly for a drum type washing machine as claimed in claim 6, wherein the bearing seat is provided with a second annular mounting groove,

8. A drum assembly for a drum type washing machine as claimed in claim 4, further comprising a bearing and an oil seal on a side of the vibration reduction assembly facing the outer drum, wherein the bearing is disposed in the bearing housing and rotatably supports the shaft, and the oil seal is for the shaft to pass through and sealingly connect with the bearing housing.

9. A drum assembly for a drum type washing machine according to claim 1, characterized in that the outer circumference of the outer drum is provided with a plurality of pairs of ribs extending in the radial direction, and a gap between each pair of ribs is provided for a working part or a cable to be arranged therebetween.

10. A drum assembly for a drum type washing machine according to any one of claims 1-9, characterized in that a connection part is provided on the outer drum for the fixed connection of the outer drum.

11. A drum assembly for a drum washing machine according to any one of claims 1-9 wherein a closure door is provided on the inner drum, the closure door being provided on a side peripheral wall of the inner drum for closing the inner opening.

12. A drum washing machine, characterized in that, comprises a machine shell and a washing drum component of the drum washing machine according to any one of claims 1 to 11,

the outer cylinder is directly and fixedly connected with the shell,