CN111826897A

CN111826897A - Drum washing machine and outer drum thereof

Info

Publication number: CN111826897A
Application number: CN201910305115.4A
Authority: CN
Inventors: 杨飞; 卢金波; 蒋玉亮; 于亮亮
Original assignee: Qingdao Haier Drum Washing Machine Co Ltd; Qingdao Haier Co Ltd
Current assignee: Qingdao Haier Drum Washing Machine Co Ltd; Qingdao Haier Co Ltd
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-10-27

Abstract

The invention belongs to the technical field of washing machines, and particularly relates to a drum washing machine and an outer drum thereof. The outer drum of the invention is hung in the shell of the drum washing machine and comprises two cylindrical parts, wherein one cylindrical part is provided with an opening for the clothes to enter and exit; the cylinder wall of at least one of the cylinder parts extends outwards to form a connecting rib extending along the circumferential direction of the cylinder wall, a plurality of connecting columns are integrally formed on the connecting rib, and the connecting columns are used for connecting and fixing the two cylinder parts together when the outer cylinder is assembled. According to the invention, the connecting ribs are arranged on the wall of the cylindrical part, the connecting ribs are arranged on the connecting ribs, and the connecting columns are connected together through the connecting ribs, so that the structural strength of the connecting columns is improved, the connecting columns are prevented from being broken in the use process, and the service life of the outer cylinder is further prolonged.

Description

Drum washing machine and outer drum thereof

Technical Field

The invention belongs to the technical field of washing machines, and particularly relates to a drum washing machine and an outer drum thereof.

Background

The drum washing machine is popular among more and more families (especially small family type families) because of the advantages of good washing effect, convenient use, small occupied space and the like.

The drum washing machine includes: the outer barrel comprises a shell, an outer barrel hung in the shell and an inner barrel arranged in the outer barrel and capable of rotating relative to the outer barrel. When the washing machine needs to wash, clothes are put into the inner drum from the inlet in front of the shell, so that the clothes are rubbed and beaten with the inner drum in the rotating process of the inner drum relative to the outer drum, and the clothes are further cleaned.

The outer tub of the related art drum washing machine is manufactured by dividing it into two cylindrical parts at the time of manufacturing, and then butting the two cylindrical parts together. Specifically, at the time of manufacturing, a plurality of screw columns integrated with the cylindrical portions are uniformly formed in the radial direction directly on the cylindrical wall of each cylindrical portion. During assembly, the screw columns of the two cylindrical parts are aligned, and then screws are inserted through the aligned screw columns of the two cylindrical parts in parallel with the axis of the outer cylinder to connect the two cylindrical parts together. However, the existing screw column has low structural strength and is easy to break, so that the service life of the outer cylinder is affected.

Disclosure of Invention

The present invention provides a drum washing machine and a tub thereof to solve the above or other potential problems of the prior art.

In a first aspect, the present invention provides a tub for hanging in a casing of a drum washing machine, the tub comprising two tubular portions, one of the tubular portions having an opening for the ingress and egress of laundry; the cylinder wall of at least one of the cylinder parts extends outwards to form a connecting rib extending along the circumferential direction of the cylinder wall, a plurality of connecting columns are integrally formed on the connecting rib, and the connecting columns are used for connecting and fixing the two cylinder parts together when the outer cylinder is assembled.

In a preferred embodiment of the above outer cylinder, the connecting rib forms a closed loop around a cylinder wall of the outer cylinder.

In a preferred technical scheme of the outer cylinder, the connecting ribs are arranged on the cylinder walls of the two cylinder parts.

In a preferred technical solution of the above outer cylinder, a positioning column is formed on the connecting rib of one of the cylindrical portions, and a positioning groove matched with the positioning column is formed on the connecting rib of the other cylindrical portion; when the two tubular portions are assembled together, the locating posts are received in the locating slots.

In a preferred technical solution of the above outer cylinder, the number of the positioning posts is plural, and correspondingly, the number of the positioning grooves is plural.

In a preferred embodiment of the above outer cylinder, the plurality of positioning columns and the plurality of connecting columns are alternately arranged on the connecting rib of one of the cylindrical portions, and correspondingly, the plurality of positioning grooves and the plurality of connecting columns are alternately arranged on the connecting rib of the other cylindrical portion.

In the preferable technical scheme of the outer barrel, at least two positioning columns are arranged between two adjacent connecting columns, and correspondingly, at least two positioning grooves are arranged between two adjacent connecting columns.

In a preferred embodiment of the above outer cylinder, the positioning column is disposed on one of the connecting columns of the cylinder, and correspondingly, the positioning groove is disposed on the other connecting column of the cylinder.

In a preferred embodiment of the above outer cylinder, a flange extending in a direction of the other cylindrical portion is formed on an outer edge of the connecting rib of at least one of the cylindrical portions.

In a preferred embodiment of the above outer cylinder, the connecting ribs of the two cylindrical portions are formed with the flanges, and when the two cylindrical portions are assembled together, the outer edge of the flange of one of the cylindrical portions abuts against the outer edge of the flange of the other cylindrical portion, and the flange of one of the cylindrical portions is located at least partially outside the connecting column of the other cylindrical portion.

In the preferable technical scheme of the outer barrel, a reinforcing rib is arranged between every two adjacent connecting columns.

In a preferred embodiment of the above outer cylinder, one of the cross sections of the cylindrical portion has a center line, and at least two of the connecting columns are respectively located on both sides of the center line.

In the preferable technical scheme of the outer cylinder, the connecting columns are uniformly distributed along the circumferential direction of the cylinder wall.

In a preferred technical scheme of the outer cylinder, a threaded hole is formed in the connecting column; alternatively, the connecting post of one of the barrel portions is formed with an external thread, and the connecting post of the other barrel portion is formed with a threaded hole having an internal thread, the external thread being threadedly connected with the internal thread when the two barrel portions are assembled together.

In a second aspect, the present invention provides a drum washing machine comprising: the outer shell, the outer cylinder and the inner cylinder; the outer cylinder is hung in the shell, and the inner cylinder is rotatably arranged in the outer cylinder.

As can be appreciated by those skilled in the art, the present invention provides a drum washing machine and a tub thereof. According to the invention, the connecting ribs extending along the circumferential direction of the cylinder wall are formed on the cylinder wall of at least one cylindrical part of the outer cylinder, and the connecting columns for connecting the two cylindrical parts are arranged on the connecting ribs, so that the connecting columns are connected into an integral structure because the connecting columns are arranged on the connecting ribs and are not single screw columns directly formed on the outer wall of the cylindrical part like the prior art, the strength of the connecting structure for connecting the cylindrical parts together is enhanced, and the service life of the outer cylinder is prolonged. In addition, the connecting columns are arranged on the connecting ribs, so that the phenomenon of opening deformation caused by different cooling time in the cooling process due to the fact that the thickness of the positions of the screw columns at the opening is larger than the thickness of other external parts at the opening when the cylindrical parts of the outer cylinder are manufactured can be avoided, the error of the two cylindrical parts in alignment is reduced, and the assembly efficiency of the outer cylinder is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an outer barrel provided in an embodiment of the present invention;

FIG. 2 is a schematic structural view of the cylindrical portion of FIG. 1 located on the rear side;

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a schematic structural view of the barrel portion on the front side in FIG. 1;

FIG. 5 is a front view of FIG. 4;

FIG. 6 is a cross-sectional view A-A of FIG. 3;

FIG. 7 is an enlarged view of a portion of I of FIG. 6;

FIG. 8 is a sectional view taken along line B-B of FIG. 5;

FIG. 9 is an enlarged view of a portion II of FIG. 8;

FIG. 10 is a front view of FIG. 1;

FIG. 11 is a cross-sectional view taken along line C-C of FIG. 10;

FIG. 12 is an enlarged view of a portion of III of FIG. 11;

fig. 13 is a partial enlarged view of IV in fig. 1.

In the drawings: 100. an outer cylinder; 110. a cylindrical portion; 111. an opening; 200. connecting ribs; 300. connecting columns; 400. a positioning column; 500. positioning a groove; 600. and (5) flanging.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.

In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be understood that the terms "inner", "outer", "upper", "bottom", "front", "rear", and the like, when used, refer to the orientation or positional relationship shown in the drawings, which are used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered limiting.

Example one

FIG. 1 is a schematic structural view of an outer tub provided in the present embodiment; FIG. 2 is a schematic structural view of the cylindrical portion of FIG. 1 located on the rear side; fig. 3 is a front view of fig. 2. Referring to fig. 1 to 3, the present embodiment provides an outer tub 100 hung in a casing of a drum washing machine. The tub 100 generally includes two tubular portions 110, wherein one tubular portion 110 has an opening 111 for the laundry to enter and exit, as can be seen in fig. 2. In this embodiment, at least one of the cylindrical portions 110 has a connecting rib 200 extending outward in the circumferential direction of the cylindrical wall, for example, the connecting rib 200 is formed on the wall of the front cylindrical portion 110 in fig. 1, or the connecting rib 200 is formed on the wall of the rear cylindrical portion 110 in fig. 1. A plurality of coupling posts 300 are integrally formed on the coupling rib 200, and the coupling posts 300 are used to couple and fix the two cylindrical parts 110 together when the outer tub 100 is assembled.

Taking the case that the connection rib 200 is formed on the wall of the cylindrical portion 110 located at the rear side in fig. 1 as an example, the cylindrical portion 110 located at the front side in fig. 1 may be formed with a plurality of separate screw columns along the circumferential direction outside the wall as in the prior art. During assembly, the screw posts and the connecting posts are aligned to fixedly connect the front and rear barrel portions 110 together, either directly or with fasteners.

Specifically, the present embodiment forms the coupling rib 200 extending in the circumferential direction of the cylinder wall on the cylinder wall forming the cylindrical portion 110 of the outer cylinder 100, and a plurality of connection columns 300 for connecting the two cylindrical parts 110 are provided on the connection ribs 200, since the plurality of connection columns 300 are connected together by the connection ribs 200, the structural strength of the connection columns 300 is enhanced, and since the connection rib 200 extends along the circumferential direction of the cylinder wall, the contact area between it and the cylinder wall is large, the structural strength of the coupling structure composed of the coupling rib 200 and the coupling post 300 can be further improved, so that when the cylindrical part 110 provided with the coupling ribs 200 and the coupling post 300 is assembled with another existing cylindrical part 110 or the cylindrical part 110 also provided with the coupling ribs 200 and the coupling post 300, the coupling strength of the two cylindrical parts 110 is improved, thereby improving the stability of the coupling of the both and further improving the life span of the tub 100.

The connecting rib 200 may be made of plastic, rubber, or metal.

Referring to fig. 2, the connecting rib 200, the connecting column 300 and the wall of one of the cylindrical portions 110 may be integrally formed (for example, any suitable conventional processing method such as a molding process or an injection molding process may be adopted), so that not only the manufacturing process of the cylindrical portion 110 can be simplified, but also the assembling time between the components can be saved and the assembling efficiency of the outer cylinder 100 can be improved. Meanwhile, the cylindrical part 110, the connecting ribs 200 and the connecting column 300 are integrally formed into a whole, so that the connection strength among all the parts is enhanced, the problem that the connecting column is broken in use can be further avoided, and the service life of the outer cylinder is prolonged.

Based on the above, in the embodiment, the connecting column 300 is disposed on the connecting rib 200 extending along the circumferential direction of the cylindrical wall of the cylindrical portion 110, so that the structural strength of the connecting column 300 is effectively improved, the connecting column 300 is prevented from being broken, and the service life of the outer cylinder 100 is further prolonged.

In addition, since the connecting column 300 is disposed on the connecting rib 200, the thickness of the radial section of the position where the connecting column 300 is located is substantially the same, thereby avoiding the problem of deformation of the opening of the cylindrical part 110 due to uneven thickness during the injection molding process, reducing errors during the assembly of the outer cylinder 100, and improving the assembly efficiency.

As shown in fig. 2 and 3, the connection rib 200 of the present embodiment forms a closed loop around the wall of the outer tub 100. Forming the connecting rib 200 into a closed ring shape can further improve the uniformity of the thickness of the radial section of the location of the connecting post 300, further reduce the deformation of the opening that may occur when manufacturing the cylindrical portion 110 by injection molding, thereby reducing assembly errors and improving assembly efficiency.

It is easy to understand that the number and the positions of the connecting columns 300 on the ring-shaped connecting rib 200 can be set according to actual needs. For example, the plurality of connecting studs 300 on the connecting rib may be uniformly or randomly distributed along the annular connecting rib 200. In addition, the closed ring-shaped connecting rib 200 can increase the number of the connecting columns 300 properly compared with the non-closed connecting rib 200, and further improve the connecting strength between the two cylindrical parts 110.

FIG. 4 is a schematic structural view of the barrel portion on the front side in FIG. 1; fig. 5 is a front view of fig. 4. As shown in fig. 2 to 5, a connecting rib 200 is formed on the wall of each of the two cylindrical portions 110 of the outer cylinder 100 to further improve the service life of the outer cylinder 100.

In the present embodiment, in order to improve the assembling efficiency between the two cylindrical portions 110, a positioning structure is optionally provided on the connecting rib 200 provided on the cylindrical walls of the front and rear two cylindrical portions 110. Thus, when assembling, the two cylindrical parts 110 can be positioned by the positioning structure to align the connecting columns on the connecting ribs 200 of the two cylindrical parts 110, and then the two cylindrical parts 110 are fixedly connected together directly or by fasteners, so that the assembling efficiency of the outer cylinder 100 can be further improved.

FIG. 6 is a cross-sectional view A-A of FIG. 3; FIG. 7 is an enlarged view of a portion of I of FIG. 6; FIG. 8 is a sectional view taken along line B-B of FIG. 5; fig. 9 is a partial enlarged view of II in fig. 8. As shown in fig. 2 to 9, a positioning column 400 is formed on the connecting rib 200 of one of the cylindrical portions 110, and a positioning groove 500 that is fitted with the positioning column 400 is formed on the connecting rib 200 of the other cylindrical portion 110, so that when the two cylindrical portions 110 are fitted together, the positioning column 400 is received in the positioning groove 500. Specifically, fig. 2, 3, 6, and 7 show that the positioning posts 400 are provided on the connecting ribs 200 of the rear-side cylindrical portion 110 in fig. 1, and correspondingly, fig. 4, 5, 8, and 9 show that the positioning grooves 500 are provided on the connecting ribs 200 of the front-side cylindrical portion 110 in fig. 1.

FIG. 10 is a front view of FIG. 1; FIG. 11 is a cross-sectional view taken along line C-C of FIG. 10; fig. 12 is a partial enlarged view of III in fig. 11. As shown in fig. 10 to 12, when assembling the outer tub 100, the connecting columns 300 on the two tub portions 110 are aligned, then the positioning columns 400 on one tub portion 110 are clamped into the positioning grooves 500 on the other tub portion 110, and after the two tub portions 110 are positioned, the connecting columns 300 aligned with the two tub portions 110 are fixedly connected together directly or by fasteners.

In this embodiment, by the design of the positioning columns 400 and the positioning grooves 500, the connecting columns 300 of the two cylindrical parts 110 can be quickly aligned, so that the outer tub 100 can be quickly assembled, thereby improving the assembly efficiency of the outer tub 100. In the embodiment, the positioning structure is arranged on the connecting rib 200 of the two cylindrical parts 110, so that the alignment process of the two connecting columns 300 corresponding to the two cylindrical parts 110 is more convenient and stable during assembly, the situation that the connecting columns 300 correspondingly arranged on the two cylindrical parts 110 cannot be aligned quickly and stably due to the self weight of the two cylindrical parts 110 is avoided, and the assembly between the two cylindrical parts 110 is more convenient and quicker.

In addition, when the two cylindrical parts 110 are assembled together, the positioning posts 400 are received in the positioning grooves 500, and the contact area between the two cylindrical parts 110 is increased on the basis that the connecting post 300 fixes the two cylindrical parts 110, thereby further improving the structural stability of the outer tub 100.

It is understood that the positioning posts 400 can be disposed on either of the connecting ribs 200 of the two cylindrical portions 110, and correspondingly, the positioning grooves 500 are disposed on the connecting ribs of the other cylindrical portion 110. Or, the positioning column 400 and the positioning groove 500 may be simultaneously disposed on the connecting rib 200 of any one of the tubular portions 110, and correspondingly, the positioning groove 500 matched with the positioning column 400 and the positioning column 400 matched with the positioning groove 500 are correspondingly disposed on the connecting rib 200 of another tubular portion 110, as long as the positioning column 400 and the positioning groove 500 can be smoothly matched, and effective positioning of the two tubular portions 110 is ensured.

Referring to fig. 3 and 5, in designing, the positioning column 400 may be provided in plural, and correspondingly, the positioning groove 500 may also be provided in plural. Specifically, a plurality of positioning posts 400 may be formed on the connecting rib 200 of one of the cylindrical portions 110, and correspondingly, a plurality of positioning grooves 500 may be formed on the connecting rib 200 of the other cylindrical portion 110 to be engaged with the positioning posts 400. Of course, a plurality of positioning pillars 400 and positioning grooves 500 may be formed at intervals on the connecting rib 200 of the same barrel part 110, and the positioning pillars 400 and the positioning grooves 500 on two barrel parts 110 are matched with each other.

There may be various ways to implement the positions of the positioning column 400 and the positioning groove 500 on the connecting rib 200.

In a first possible implementation manner, when only the positioning columns 400 or only the positioning grooves 500 are disposed on the connecting ribs 200 of each barrel part 110, the positioning columns 400 and the connecting columns 300 are alternately disposed on the connecting ribs 200 of one barrel part 110, and correspondingly, the positioning grooves 500 and the connecting columns 300 are alternately disposed on the connecting ribs 200 of the other barrel part 110. This setting mode makes every spliced pole 300 both sides all can realize the location through mutually supporting of reference column 400 and constant head tank 500 to guarantee to every convenient and fast who aligns and assembling process to spliced pole 300, also make every assembly between every spliced pole 300 and be located the connection between the section of thick bamboo wall of this spliced pole 300 both sides all more firm.

When a plurality of positioning posts 400 and a plurality of positioning grooves 500 are formed on the connecting rib 200 of one of the cylindrical portions 110, the positioning posts 400, the positioning grooves 500 and the connecting columns 300 can be alternately arranged on the connecting rib 200 of the same cylindrical portion 110. For example, the positioning columns 400, the positioning grooves 500 and the connecting columns 300 which are arranged at intervals are taken as a unit, a plurality of units are sequentially arranged along the circumferential direction of the connecting rib 200 of one of the cylindrical parts 110, so that the positioning effect of the two cylindrical parts 110 is improved, the corresponding connecting columns 300 are ensured to be aligned quickly, meanwhile, the positioning columns 400, the positioning grooves 500 and the connecting columns 300 are alternately arranged along the circumferential direction of the connecting ribs 200, and the structural stability of the outer cylinder 100 is further improved.

As shown in fig. 3 and 5, in a second possible implementation manner, at least two positioning pillars 400 are disposed between two adjacent connecting pillars 300, and correspondingly, at least two positioning grooves 500 are disposed between two adjacent connecting pillars 300.

Specifically, when only the positioning columns 400 or only the positioning grooves 500 are disposed on the connecting ribs 200 of each barrel 110, at least two positioning columns 400 may be disposed between two adjacent connecting columns 300 on the connecting rib 200 of one barrel 110, and correspondingly, at least two positioning grooves 500 may be disposed between two adjacent connecting columns 300 on the connecting rib 200 of the other barrel 110. This arrangement enables both sides of each connecting column 300 to be positioned by two positioning structures, further enhances the positioning effect of the two cylindrical parts 110 in the assembling process, and ensures the accurate and quick alignment of each pair of connecting columns 300.

When a plurality of positioning columns 400 and a plurality of positioning grooves 500 are formed on the connecting rib 200 of one of the cylindrical parts 110, because the positioning columns 400 and the positioning grooves 500 can be positioned, at least one positioning column 400 and one positioning groove 500, or at least two positioning columns 400, or at least two positioning grooves 500 can be arranged between the adjacent connecting columns 300, so as to ensure that two positions are realized on two sides of each connecting column 300.

Referring to fig. 6 to 12, in a third possible implementation, the positioning column 400 is arranged on the connecting column 300 of one of the cylindrical portions 110 (i.e. on the side of the connecting column 300 facing the other cylindrical portion 110), as shown with reference to fig. 6 and 7; accordingly, the positioning groove 500 is provided on the connecting column 300 of the other barrel part 110 (i.e., on the side of the connecting column 300 facing the barrel part 110 provided with the positioning column 400), as shown with reference to fig. 8 and 9.

Specifically, the positioning structures (positioning columns 400 and positioning grooves 500) in the above-described implementation are located on the connecting columns 300 of the connecting ribs 200. Thus, when the two cylindrical portions 110 are assembled, the positioning posts 400 are directly inserted into the positioning grooves 500, and the two connecting posts 300 of the two cylindrical portions 110 are aligned. This arrangement simplifies the positioning process of the connection column 300, improves the positioning efficiency of the connection column 300, and ensures the alignment accuracy of the connection column 300.

It can be understood that, in order to further enhance the positioning effect of the positioning structure on the connecting column 300, the positioning column 400 may be disposed on each connecting column 300 of one of the cylindrical portions 110 in the present embodiment; correspondingly, all set up constant head tank 500 on every spliced pole 300 of another tube-shape part 110 for every spliced pole 300 all can fix a position through the cooperation of reference column 400 and constant head tank 400, guarantees that two tube-shape parts 110's spliced pole 300 can align fast.

Fig. 13 is a partial enlarged view of IV in fig. 1. Referring to fig. 3, 7, 12 and 13, in order to further position the connecting column 300, in this embodiment, the outer edge of the connecting rib 200 of at least one of the cylindrical portions 110 is formed with a flange 600 extending toward the other cylindrical portion 110. For example, the burring 600 is formed at the outer edge of the coupling rib 200 of one of the cylindrical portions 110. During specific assembly, after the positioning column 400 of one of the cylindrical parts 110 is inserted into the positioning groove 500 of the other cylindrical part 110, the flanging 600 extending towards the other cylindrical part 110 is wrapped on the connecting column 300 on the connecting rib 200 of the other cylindrical part 110, so that the arrangement of the flanging 600 for improving the efficiency when the two cylindrical parts 110 are positioned plays an effective positioning role in assembling the connecting column 300 positioned on the two cylindrical parts 110, two connecting columns 300 in one-to-one correspondence can be aligned accurately and quickly, and final assembly is completed.

With continued reference to fig. 13, in particular implementations, the connecting ribs 200 of both cylindrical portions 110 may be formed with a bead 600, and when the two cylindrical portions 110 are assembled together, the outer edge of the bead 600 of one of the cylindrical portions 110 abuts the outer edge of the bead 600 of the other cylindrical portion 110, and the bead 600 of one of the cylindrical portions 110 is located outside at least part of the connecting column 300 of the other cylindrical portion 110. When the two cylindrical parts 110 are assembled, after the positioning column 400 of one cylindrical part 110 is inserted into the positioning groove 500 of the other cylindrical part 110, the outer edges of the flanges 600 of the two cylindrical parts 110 abut together, and the flange 600 of one cylindrical part 110 wraps the outer side of the part of the connecting column 300 on the other cylindrical part 110, so that the positioning effect on the connecting column 300 is improved, and the assembling efficiency is improved.

In this embodiment, a reinforcing rib may be further disposed between two adjacent connecting columns 300 to further enhance the structural strength of the connecting columns 300 and prolong the service life of the outer tub 100. The structure of the ribs can be any suitable rib structure used in the prior art, and will not be described in detail here.

Referring to fig. 2, in order to make the assembly between the two cylindrical parts 110 more stable, one of the cross sections of the cylindrical part 110 of the present embodiment has a center line l, and at least two connecting columns 300 are respectively located at both sides of the center line l to ensure that the cylindrical parts 110 located at both sides of the center line can be stably connected.

In concrete implementation, the connecting columns 300 can be uniformly distributed along the circumferential direction of the cylinder wall, so that the connection stability between the two cylindrical parts 110 is further improved, and the structural stability of the outer cylinder 100 is further ensured.

The structure of the connecting column 300 in this embodiment can be various. In one possible implementation, the connection post 300 may be formed with a threaded hole, that is, the connection post 300 may be a screw post, as shown in fig. 12. During assembly, the screw holes of the screw columns of the two cylindrical parts 110 are aligned, and then screws are inserted through the aligned screw holes of the two cylindrical parts 110 in parallel with the axis of the outer cylinder 100 to connect the two cylindrical parts 110 together, thereby completing the assembly of the outer cylinder 100. The connection post 300 is set as a screw post, so that the connection structure is simplified on the basis of ensuring tight connection, and the connection efficiency between the two cylindrical parts 110 is improved.

In another possible implementation, the connecting column 300 of one of the cylindrical portions 110 is formed with external threads, and the connecting column 300 of the other cylindrical portion 110 is formed with a threaded hole having internal threads, which are threadedly connected when the two cylindrical portions 110 are assembled together. It should be noted that, in order to realize the external thread and the internal thread threaded connection between the two connecting columns 300, the connecting column 300 on at least one of the two cylindrical portions 110 and the connecting rib 200 are detachably connected. For example, the connecting column 300 of one of the cylindrical portions 110 is a bolt detachably disposed on the connecting rib 200, wherein the bolt and the connecting rib 200 can be connected by a screw thread. During assembly, the bolt is turned into the threaded hole on the connecting column 300 on the other cylindrical part 110 to realize threaded connection, thereby completing the assembly of the two cylindrical parts 110.

Example two

The present embodiment provides a drum washing machine including: the outer shell, the outer cylinder 100 and the inner cylinder in the first embodiment; the outer cylinder 100 is suspended in the housing, and the inner cylinder is rotatably provided in the outer cylinder 100.

The specific structure, assembly manner and function of the outer barrel 100 are the same as those of the first embodiment, and reference can be made to the above embodiments. The shell, the inner drum and other structures of the drum washing machine are the same as those of the existing drum washing machine, and are not described again.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An outer drum is hung in a shell of a drum washing machine and is characterized by comprising two cylindrical parts, wherein one cylindrical part is provided with an opening for clothes to enter and exit;

the cylinder wall of at least one of the cylinder parts extends outwards to form a connecting rib extending along the circumferential direction of the cylinder wall, a plurality of connecting columns are integrally formed on the connecting rib, and the connecting columns are used for connecting and fixing the two cylinder parts together when the outer cylinder is assembled.

2. The outer barrel of claim 1 wherein said tie bar forms a closed loop around the barrel wall of said outer barrel.

3. The outer cylinder according to claim 1, wherein the cylinder walls of both the cylinder portions are provided with the connecting ribs.

4. The outer cylinder according to claim 3, wherein the connecting rib of one of the cylinder parts is formed with a positioning column, and the connecting rib of the other cylinder part is formed with a positioning groove matched with the positioning column; when the two tubular portions are assembled together, the locating posts are received in the locating slots.

5. The outer barrel of claim 4 wherein the positioning posts are plural, and correspondingly, the positioning grooves are plural;

the positioning columns and the connecting columns are alternately arranged on the connecting rib of one of the cylindrical parts, and correspondingly, the positioning grooves and the connecting columns are alternately arranged on the connecting rib of the other cylindrical part.

6. The outer barrel according to claim 5 wherein at least two positioning posts are disposed between two adjacent connecting posts, and correspondingly at least two positioning grooves are disposed between two adjacent connecting posts.

7. The outer cartridge of claim 5 wherein said locating posts are disposed on one of said cartridge connecting posts and correspondingly said locating slots are disposed on the other of said cartridge connecting posts.

8. The outer cylinder according to claim 3, wherein the outer edge of the connecting rib of at least one of the cylindrical portions is formed with a flange extending toward the other cylindrical portion.

9. The outer barrel according to claim 8 wherein the connecting ribs of both the barrel portions are formed with the flanges, and when the two barrel portions are fitted together, the outer edge of the flange of one of the barrel portions abuts against the outer edge of the flange of the other barrel portion, and the flange of one of the barrel portions is located outside at least part of the connecting column of the other barrel portion.

10. A drum washing machine characterized by comprising: an outer shell, an outer barrel according to any one of claims 1 to 9, an inner barrel;

the outer cylinder is hung in the shell, and the inner cylinder is rotatably arranged in the outer cylinder.