CN103789975A - Washing machine box body reinforcing structure and washing machine - Google Patents
Washing machine box body reinforcing structure and washing machine Download PDFInfo
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- CN103789975A CN103789975A CN201210421499.4A CN201210421499A CN103789975A CN 103789975 A CN103789975 A CN 103789975A CN 201210421499 A CN201210421499 A CN 201210421499A CN 103789975 A CN103789975 A CN 103789975A
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- casing
- washing machine
- reinforcing prop
- base frame
- inwall
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/12—Casings; Tubs
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
The invention relates to a washing machine box body reinforcing structure and a washing machine. The reinforcing structure comprises a base table located at the bottom of a box body and connected with the box body and a control panel base located on the upper portion of the box body and connected with the box body. A reinforcing column used for improving the strength of the box body and connected with the base table is integrally arranged on the inner wall of the box body, and the reinforcing column is arranged on the inner wall of the box body in the vertical direction. The washing machine box body reinforcing structures are firmly connected. The structure is compact, saves space, is convenient to disassemble and facilitates modularized assembly.
Description
Technical field
The present invention relates to washing machine field, especially a kind of casing of washing machine strengthens structure and washing machine, particularly a kind of box house are strengthened structure and washing machine with the casing of washing machine of the reinforcing prop being wholely set.
Background technology
Present stage, washing machine is conventional electrical equipment in daily life, because being favored its washing clothes save trouble and labor.Washing machine is to utilize electricity generator tool to be used for the cleaning appliance of washing clothes, and increasing people removes the large piece article such as cleaning clothes, bed clothes with washing machine, time saving and energy saving, and washing machine is becoming requisite household electrical appliance in people's life.But the washing machine on market, because volume is large, weight is larger, only can be placed in room and use now, inconvenient shift position, is used inconvenient.Along with the needs of life, middle-size and small-size washing machine is equally more and more favored to mini washing machine, and therefore the aesthetic look of small design washing machine and good practicality are also subject to the more and more higher attention of current washing machine manufacturer.
Washing machine of the prior art, casing of washing machine is strengthened structure and is adopted the monolithic construction part along its short transverse of being made up of sheet metal, cabinet wall or welding or screw are connected with reinforcement structure, its shortcoming is: should process injection molding again by sheet material, processing and manufacturing needs a large amount of special equipments, operation is many, cost is high, and casing lower end easy-to-rust, once damage, need integral replacing, cause maintenance cost to strengthen.Meanwhile, with bolts between all parts, although the dismounting complexity that is connected firmly.
CN01219465.4 discloses a kind of casing of washing machine and has strengthened structure, comprises a base, casing and rear box before connecting firmly on base.This casing is convenient to manufacture, long service life, be convenient to local replacing, but increased the quantity of parts, allow install comparatively complicated.
Compared with large washing machine, if small washing machine is volume-diminished just, each several part structure is indispensable, and still every part-structure is because volume is little, and manufacture craft is comparatively complicated, the complexity that installation process becomes, meanwhile, fitting operation limited space system, some erecting tools can not use, the assembling inconvenience of washing machine, so the body structure of leviathan can not directly be moved in the production of small washing machine.
The present invention relates to a kind of casing of washing machine and strengthen structure and washing machine, simplified more complicated production, the mounting process of prior art, be convenient to modularization assembling, production cost is greatly reduced; Between each structure, be connected firmly, reliably, and compact conformation, save space.
Summary of the invention
Object of the present invention is for providing a kind of casing of washing machine to strengthen structure and washing machine, and Modularization assembled structure, has simplified more complicated production, the mounting process of prior art, is convenient to modularization assembling, and production cost is greatly reduced; Between each structure, be connected firmly, reliably, and compact conformation, save space.
Another object of the present invention is to provide the washing machine with above-mentioned casing reinforcement structure.
In order to realize this object, the present invention adopts following technical scheme:
A kind of casing of washing machine is strengthened structure, comprise casing, be positioned at base frame that bottom half is connected with casing and the control panel seat that is positioned at casing top and is connected with casing, on described cabinet wall, being wholely set to be useful on increases the intensity of casing and the reinforcing prop of connect box and base frame.
Described reinforcing prop is arranged on along the above-below direction of casing on the inwall of casing, and reinforcing prop is the reinforcement structure that protrudes from cabinet wall, and multiple reinforcing props are evenly distributed on the inwall of casing.
Described reinforcing prop is cylindrical, the installing space of control panel seat is at least left in the upper end of reinforcing prop to the upper end of casing, the lower end of reinforcing prop is higher than the lower edge of casing, and the installing space of base frame is left in the lower end of reinforcing prop to the lower end of casing, and reinforcing prop is perpendicular to the upper surface of base frame.
Described casing is prism-frustum-shaped or round table-like structure, and preferably prism-frustum-shaped, comprises four sidewalls all around, bending place arc transition, and transition arc inner side is provided with the reinforcing prop with casing integrated injection molding.
Between described reinforcing prop and casing, be provided with side rib plate, reinforcing prop is by side rib plate and the one-body molded setting of casing, and reinforcing prop and side rib plate are given prominence to cabinet wall.
The bottom of described reinforcing prop is the suspension column of reinforcing prop, and the center of suspension column is provided with the screw hole for connecting base frame.
Side rib plate between described reinforcing prop and casing is the slab construction of up-narrow and down-wide right-angled trapezium shape, the inwall of the hypotenuse end connect box of right-angled trapezium, the outer surface of corresponding other end connection reinforcement post.
Described base frame periphery is provided with the groove that matches with casing lower end, casing lower end correspondence is plugged in groove, on described base frame, be provided with the fixing hole matching with the screw hole of reinforcing prop, on reinforcing prop, the screw hole of suspension column is corresponding with the fixing hole on base frame, by screw, casing is fixedly connected with base frame.
The described control panel seat upper periphery setting cannelure that Open Side Down, sidewall is provided with bayonet socket, control panel seat is arranged in casing upper opening, by the card convex clamping of bayonet socket and cabinet wall, the upper edge of casing is inserted in cannelure, the lower end of described control panel seat is also provided with the carriage of the frame structure matching with cabinet wall, and on cabinet wall, integrated injection molding has support component, and carriage is fixedly mounted on support component.
A kind of washing machine has above-mentioned casing and strengthens structure.
Adopt after technical solutions according to the invention, bring following beneficial effect:
1, in the present invention, in the casing of casing, integrated injection molding has reinforcing prop, and reinforcing prop increases the intensity of casing, can also play the effect of connect box and base frame.
2, the present invention has simplified the more complicated production of existing washing machine, mounting process, is convenient to modularization assembling, and production cost is greatly reduced; Plastics have the features such as ageing-resistant and corrosion resistant, use washing machine of the present invention can improve service life; Compact conformation, saves space; Between each structure, connect firm, stable.
3, in the present invention, casing and dish seat adopt bayonet socket clamping and groove to peg graft, and have simplified the installation procedure between control panel seat and casing of washing machine, easy for installation and be connected firmly.
4, in the present invention, the box house of casing of washing machine reinforcement structure is provided with supporting construction, has changed casing of washing machine and has strengthened the situation that structure stress is too concentrated, and makes casing mean forced, and stress distribution is comparatively reasonable; Because carriage is located on cabinet wall, mean forced, further utilizes control panel seat plug-in type mounting structure, makes casing not be subject to steeve tension to cause metaboly completely; Carriage framework and casing location, make hanger erection position more accurate, fixing, avoided being out of shape because of carriage all bad result producing.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1: washing machine structure figure of the present invention
Fig. 2: casing of washing machine of the present invention is strengthened structure explosive view
Fig. 3: casing of washing machine of the present invention is strengthened the base frame structure chart of structure
Fig. 4: casing of washing machine of the present invention is strengthened the body structure figure of structure
Fig. 5: the reinforcing prop structure chart on the casing of casing of washing machine reinforcement structure of the present invention
Fig. 6: casing of washing machine of the present invention is strengthened the carriage structure chart of structure
Fig. 7: casing of washing machine of the present invention is strengthened the control panel holder structure figure of structure
1, base frame, 11, base frame main body, 12, draining transition conduit, 13, fixing hole, 14, groove, 2, casing, 21, reinforcing prop, 211, suspension column, 222, screw hole, 22, side rib plate, 23, support component, 231, screw pole, 232 locating dowels, 233, support ribs, 24, upper edge, 25, lower edge, 26, card convex, 3, carriage, 31, screw hole, 32, locating hole, 4, control panel seat, 41, control panel seat body, 42, decorative panel, 45, bayonet socket, 5, upper cover.
Specific embodiment
As shown in Figure 1 and Figure 2, a kind of casing of washing machine is strengthened structure, comprise casing 2, be positioned at base frame 1 that bottom half is connected with casing 2 and the control panel seat 4 that is positioned at casing top and is connected with casing 2, as shown in Figure 3, on described casing 2 inwalls, be wholely set and be useful on the reinforcing prop 21 that increases the intensity of casing 2 and connect box 2 and base frame 1, described reinforcing prop 21 is arranged on the inwall of casing 2 along the vertical direction, reinforcing prop 21 is the reinforcement structure that protrudes from the inwall of casing 2, and multiple reinforcing props 21 are evenly distributed on the inwall of casing 2.The interior carriage 3 that can also be provided with the frame structure matching with casing 2 inwalls of above-mentioned casing 2, on casing 2 inwalls, integrated injection molding has support component 23, and carriage 2 is fixedly mounted on support component 23.
Described reinforcing prop 21 is the reinforcement structure that protrudes from the inwall of casing 2, form with casing 2 integrated injection moldings, the shape of cross section of reinforcing prop 21 be triangle, circle, square or trapezoidal in one or more, be connected with the inwall of casing 2 at least partly, preferably reinforcing prop 21 is solid reinforcement structure, stiffening effect is better like this, and is conducive to integrated injection molding.
As shown in Figure 4, the tubular construction that described casing 2 is upper and lower opening, reinforcing prop 21 is evenly distributed on the inwall of casing 2, preferably the casing 2 of prism-frustum-shaped, comprises four sidewalls all around, bending place arc transition, transition arc inner side is provided with the reinforcing prop 21 with casing 2 integrated injection moldings, reinforcing prop 21 can either play the effect of intensity of strengthening casing 2, can also connect box 2 and base frame 1, guarantee to connect more firm.
Preferably reinforcing prop 21 is cylindrical column, the upper end of reinforcing prop 21 is lower than the upper edge of casing 2, the installing space of control panel seat 4 and support component 23 is at least left in the upper end of reinforcing prop 21 to the upper end of casing 2, the lower end of reinforcing prop 21 is higher than the lower edge of casing 2, and the installing space of base frame 1 is left in the lower end of reinforcing prop 21 to the lower end of casing 2.
Preferably the upper end of reinforcing prop 21 arises from the lower surface of the support component 23 of casing 2, the lower end extension of reinforcing prop 21 is connected with base frame 1, and reinforcing prop 21 is perpendicular to the upper surface of base frame 1, be that reinforcing prop 21 be arranged in parallel with the axis of casing 2, between reinforcing prop 21 and casing 2, be also provided with side rib plate 22, one end of side rib plate 22 is connected with the inwall of casing 2, and the other end is connected with reinforcing prop 21, reinforcing prop 21 and outstanding casing 2 inwalls of side rib plate 22, casing 2 integrated injection moldings of side rib plate 22 and casing.The length of side rib plate 22 is equal to or less than the length of reinforcing prop 21, preferential side floor 22 upper ends are concordant with reinforcing prop 21 upper ends, side rib plate 22 lower ends are longer than in reinforcing prop 21 lower ends, the part that reinforcing prop 21 is longer than side rib plate 22 is the suspension column 211 of reinforcing prop 21, on suspension column 211, be useful on the screwed hole 222 being connected with base frame, screwed hole 222 can be screwed and be connected with the fixing hole on base frame 1 like this.
As shown in Figure 4 and Figure 5, can the reinforcing prop of vertical direction 21 and casing 2 be linked together by difform side rib plate 22, casing 2 described in the present embodiment is the truncated rectangular pyramids structure that sectional area increases gradually from top to bottom, reinforcing prop 21 is perpendicular to base frame 1 upper surface, if the upper end of reinforcing prop 21 is directly connected with the inwall of casing 2, between the inwall of lower end and casing 2, have certain gap, therefore reinforcing prop 21 is connected with the inwall of casing 2 with side rib plate 22 in the present embodiment, described side rib plate 22 is the slab construction of up-narrow and down-wide right-angled trapezium shape, the inwall of the hypotenuse end connect box 2 of right-angled trapezium, the outer surface of corresponding other end connection reinforcement post 21, thereby casing 2 and reinforcing prop 21 are connected as one, described reinforcing prop 21 upper ends are concordant with side rib plate 22, lower end exceeds side rib plate 22, reinforcing prop 21 exceeds the suspension column 211 that side rib plate 22 parts are reinforcing prop 21, the center of suspension column 211 is provided with the screw hole 222 for connecting base frame 1.
As shown in Figure 3, base frame 1 is arranged at casing 2 lower ends of washing machine, the upper and lower surface of base frame 1 is considered as horizontal direction, comprise base frame main body 11 and draining transition conduit 12, draining transition conduit 12 is arranged in base frame main body 11, is wholely set with base frame main body 11, and wherein draining transition conduit 12 is connected with For Drain Valve of Washing Machine or draining pump in one end of base frame inner side, one end of base frame outside is for being connected with the drainpipe of washing machine, and the drainpipe of washing machine can freely plug.When washing machine uses, washing machine sewer pipe is plugged on to the outer end of draining transition conduit 12, the water in washing machine drum is discharged by washing machine sewer pipe by draining transition conduit 12.When washing machine does not use, washing machine sewer pipe can be pulled up, avoid conventional laundry apparatus drainpipe to hang over casing of washing machine outside and take up room.
As Fig. 2, Fig. 4, shown in Fig. 6, described carriage 3 is to be located at casing of washing machine to strengthen the frame structure on inner structural wall, casing of washing machine inwall has been wholely set support component 23, carriage 3 is fixedly mounted on the support component 23 of casing 2 inwalls, the shape of carriage 3, size matches with the casing 2 of casing, the lateral surface of carriage 3 is just in time fitted with the inwall of casing 2 like this, be fixed on the support component 23 of casing 2 inside, thereby casing reinforcement structure is played to the effect of reinforcement, avoid washing machine in use due to the box deformation shaking or steeve tension causes.
On carriage 3, be provided with screw hole 31 and at least one locating hole 32 playing the role of positioning that at least one plays connection function, with on the support component 23 of casing 2 one, be provided with the screw pole 231 matching with screw hole 31 and the locating dowel 232 matching with locating hole 32, like this, carriage 3 is overlapped in support ribs 233, locating hole 32 coordinates with locating dowel 232 effect of carriage 3 being played to location, after coordinating with the screw pole 231 on support component 23, screw hole 31 on support component 23 is fixed with screw, preferably, four corners of carriage 3 respectively arrange two screw holes 31, on four sides of carriage 3, two locating holes 32 are respectively set.
As shown in Figure 7, control panel seat 4 comprises control panel seat body 41 and is arranged on the decorative panel 42 of control panel seat body 41 upper surfaces, described control panel seat 4 upper periphery arrange the first annular groove that Open Side Down, the upper edge 24 of casing 2 is inserted in the first groove, make control panel seat tightly be fixed in the horizontal direction the top of casing of washing machine, do not have any loosening.
The sidewall of described control panel seat 4 is provided with bayonet socket 45, the inwall of casing of washing machine 2 is provided with the card convex 26 being interlocked with bayonet socket 45, the side of card convex 26 is the triangle that width increases gradually from top to bottom, and described control panel seat 4 is connected and fixed by buckle with casing of washing machine 2.Preferably, all being connected and fixed by buckle structure and the corresponding madial wall of casing of washing machine with the lateral wall of two sides above of control panel seat, manufacturer can be according to the weight of control panel seat or the big or small quantity of determining the buckle structure of each setting, preferred, each can evenly arrange two buckle structures.
In order to make further to reinforce in the horizontal direction with on vertical direction between control panel seat 4 and casing of washing machine 2, preferred, described ornamental strip 43 can further be connected by screw fixing with control panel seat body 41
Like this, control panel seat 4 can tightly be fixed together with vertical direction in the horizontal direction with casing of washing machine 2, and easy for installation, save time, laborsaving, cost-saving.
Described casing 2 lower ends are connected with base frame 1, base frame 1 periphery is also provided with the groove 14 that matches with casing 2 lower ends, casing 2 lower end correspondences are plugged in groove 14, the two corresponding being plugged in together, on described base frame 1, be provided with the fixing hole 13 matching with the screw hole 222 of reinforcing prop 21, on reinforcing prop 21, the screw hole 222 of suspension column 211 is corresponding with the fixing hole 13 on base frame 1, by screw, casing 2 is fixedly connected with base frame 1, thereby casing 2 is further connected with base frame 1.
As shown in Figure 1, a kind of washing machine comprises above-mentioned casing reinforcement structure, has simplified the more complicated production of existing washing machine, mounting process, is convenient to modularization assembling, and production cost is greatly reduced; Compact conformation, saves space; Between each structure, connect firm, stable; Plastics have the features such as ageing-resistant and corrosion resistant, and washing machine of the present invention can improve service life.
Claims (10)
1. a casing of washing machine is strengthened structure, it is characterized in that: comprise casing (2), be positioned at base frame (1) that bottom half is connected with casing (2) and the control panel seat (4) that is positioned at casing top and is connected with casing (2), on described casing (2) inwall, be wholely set and be useful on the reinforcing prop (21) that increases the intensity of casing (2) and connect box (2) and base frame (1).
2. casing of washing machine according to claim 1 is strengthened structure, it is characterized in that: described reinforcing prop (21) is arranged on the inwall of casing (2) along the above-below direction of casing (2), reinforcing prop (21) is for protruding from the reinforcement structure of casing (2) inwall, and multiple reinforcing props (21) are evenly distributed on the inwall of casing (2).
3. casing of washing machine according to claim 2 is strengthened structure, it is characterized in that: described reinforcing prop (21) is for cylindrical, the installing space of control panel seat (4) is at least left in the upper end of reinforcing prop (21) to the upper end of casing (2), the lower end of reinforcing prop (21) is higher than the lower edge of casing (2), the installing space of base frame (1) is left in the lower end of reinforcing prop (21) to the lower end of casing (2), and reinforcing prop (21) is perpendicular to the upper surface of base frame (1).
4. casing of washing machine according to claim 3 is strengthened structure, it is characterized in that: described casing (2) is prism-frustum-shaped or round table-like structure, preferably prism-frustum-shaped, comprise four sidewalls all around, bending place arc transition, transition arc inner side is provided with the reinforcing prop (21) with casing integrated injection molding.
5. strengthen structure according to the arbitrary described casing of washing machine of claim 1-4, it is characterized in that: between described reinforcing prop (21) and casing (2), be provided with side rib plate (22), reinforcing prop (21) is by side rib plate (22) and the one-body molded setting of casing (2), and reinforcing prop (21) is given prominence to casing (2) inwall with side rib plate (22).
6. casing of washing machine according to claim 5 is strengthened structure, it is characterized in that: the bottom of described reinforcing prop (21) is the suspension column (211) of reinforcing prop (21), and the center of suspension column (211) is provided with the screw hole (222) for connecting base frame (1).
7. casing of washing machine according to claim 6 is strengthened structure, it is characterized in that: the side rib plate (22) between described reinforcing prop (21) and casing (2) is the slab construction of up-narrow and down-wide right-angled trapezium shape, the inwall of the hypotenuse end connect box (2) of right-angled trapezium, the outer surface of corresponding other end connection reinforcement post (21).
8. casing of washing machine according to claim 1 is strengthened structure, it is characterized in that: described base frame (1) periphery is provided with the groove (14) that matches with casing (2) lower end, casing (2) lower end correspondence is plugged in groove (14), on described base frame (1), be provided with the fixing hole (13) matching with the screw hole (222) of reinforcing prop (21), the screw hole (222) of the upper suspension column (211) of reinforcing prop (21) is corresponding with the fixing hole (13) on base frame (1), by screw, casing (2) is fixedly connected with base frame (1).
9. casing of washing machine according to claim 1 is strengthened structure, it is characterized in that: described control panel seat (4) upper periphery arranges the cannelure that Open Side Down, sidewall is provided with bayonet socket (45), control panel seat (4) is arranged in casing (2) upper opening, card convex (26) clamping by bayonet socket (45) with casing (2) inwall, the upper edge (24) of casing (2) is inserted in cannelure, the lower end of described control panel seat (4) is also provided with the carriage (3) of the frame structure matching with casing (2) inwall, on casing (2) inwall, integrated injection molding has support component (23), carriage (2) is fixedly mounted on support component (23).
One kind have as arbitrary in claim 1-9 as described in casing strengthen the washing machine of structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210421499.4A CN103789975B (en) | 2012-10-29 | 2012-10-29 | A kind of casing of washing machine reinforcement structure and washing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210421499.4A CN103789975B (en) | 2012-10-29 | 2012-10-29 | A kind of casing of washing machine reinforcement structure and washing machine |
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| Publication Number | Publication Date |
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| CN103789975A true CN103789975A (en) | 2014-05-14 |
| CN103789975B CN103789975B (en) | 2018-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210421499.4A Active CN103789975B (en) | 2012-10-29 | 2012-10-29 | A kind of casing of washing machine reinforcement structure and washing machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106283503A (en) * | 2015-06-08 | 2017-01-04 | 青岛海尔滚筒洗衣机有限公司 | A kind of combination type upper cover and washing machine |
| CN111593529A (en) * | 2019-02-20 | 2020-08-28 | 青岛海尔滚筒洗衣机有限公司 | Top-opening drum washing machine |
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| CN202000157U (en) * | 2010-12-30 | 2011-10-05 | 无锡小天鹅股份有限公司 | High-intensity plastic box body for washing machine |
| CN202969078U (en) * | 2012-10-29 | 2013-06-05 | 海尔集团公司 | Reinforcing structure for box body of washing machine and washing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS56145896A (en) * | 1980-04-14 | 1981-11-12 | Tokyo Shibaura Electric Co | Washing machine |
| GB2288505A (en) * | 1994-04-11 | 1995-10-18 | Bosch Siemens Hausgeraete | Noise-suppressing housing for an appliance |
| CN2330682Y (en) * | 1998-08-11 | 1999-07-28 | 无锡小天鹅股份有限公司 | Device for fixing washer base with machine case |
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| CN202000157U (en) * | 2010-12-30 | 2011-10-05 | 无锡小天鹅股份有限公司 | High-intensity plastic box body for washing machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106283503A (en) * | 2015-06-08 | 2017-01-04 | 青岛海尔滚筒洗衣机有限公司 | A kind of combination type upper cover and washing machine |
| CN111593529A (en) * | 2019-02-20 | 2020-08-28 | 青岛海尔滚筒洗衣机有限公司 | Top-opening drum washing machine |
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| Publication number | Publication date |
|---|---|
| CN103789975B (en) | 2018-03-30 |
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Effective date of registration: 20160706 Address after: 266101 Haier Industrial Park, No. 1, Haier Road, hi tech park, Laoshan District, Shandong, China Applicant after: Qingdao Haier Washing Machine Co., Ltd. Address before: 266102 Haier Industrial Park, 1 Haier Road, hi tech park, Laoshan District, Shandong, Qingdao Applicant before: haier group corporation Applicant before: Qingdao Haier Washing Machine Co., Ltd. |
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Inventor after: Ding Zhigang Inventor after: Wang Youxi Inventor after: Lin Xuefeng Inventor after: Yang Limei Inventor after: Chen Weihui Inventor before: Ding Zhigang Inventor before: Wang Youxi Inventor before: Lin Xuefeng Inventor before: Yang Limei Inventor before: Chen Weihui |
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