Inner drum support for drum washing machine and drum washing machine
By using SMC/BMC plastic parts and metal shaft body components, the dimensional accuracy, rust and cost problems of the inner drum bracket of the drum washing machine are solved, and high strength, rigidity and safety are achieved, suitable for mass production and long-term use.
Patent Information
- Application Number
- CN202421997530.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-16
AI Technical Summary
The existing inner drum brackets for drum washing machines have problems of low dimensional accuracy, corrosion problems and high costs, which are difficult to meet the needs of long-term use and mass production.
SMC/BMC plastic parts are used as the support body, combined with metal shaft body and corrosion-resistant metal shaft sleeve, and manufactured through injection molding or molding processes to ensure dimensional accuracy and strength rigidity.
The high strength, rigidity and dimensional accuracy of the bracket are achieved, which avoids rust problems, reduces production costs, and is suitable for mass production and long-term use.
Smart Images
Figure CN222908326U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of washing machines, and particularly relates to an inner cylinder bracket for a drum washing machine and a drum washing machine. Background Art
[0002] The existing inner cylinder bracket for a drum washing machine is composed of a shaft assembly and a bracket main body. The shaft assembly is composed of a shaft body and a shaft sleeve. The material of the shaft body is 45 steel and it is formed by machining. Since the shaft sleeve may come into contact with the washing water in the washing machine barrel, it is usually made of stainless steel or copper material and formed by machining. The shaft sleeve is press-fitted and fixed on the shaft body, and then used as an insert for die-casting on the bracket main body. The bracket main body is made of aluminum alloy material, formed by die-casting, trimmed by a trimming die and shaped, and manually deburred twice and shaped manually or by equipment twice.
[0003] The production process of the existing inner cylinder bracket for a drum washing machine is mature. The strength and rigidity requirements of the inner cylinder bracket are very high and need to meet the needs of repeated long-term use of the drum washing machine. The bracket main body made of aluminum alloy material has good strength performance and rigidity and can meet the needs of repeated use of the inner cylinder bracket of the drum washing machine. However, the existing inner cylinder bracket for a drum washing machine has the following disadvantages: ① The mass production problem of the aluminum alloy bracket main body: Because of the high requirement for dimensional accuracy of the aluminum alloy bracket main body, it needs to be shaped many times, the production process is complex and difficult. When mass-produced, the dimensional stability is poor, and during transportation, if there is heavy pressure or impact, secondary deformation will occur, resulting in unqualified dimensions. ② The corrosion problem of the aluminum alloy bracket main body: The aluminum alloy bracket main body will corrode after long-term use in the washing machine, especially in water containing detergent, and under the acceleration of electrochemical reaction, the corrosion rate of the aluminum alloy bracket main body will accelerate. Especially when the aluminum alloy bracket main body is used in the drum washing machine for a long time, the corrosion accumulates and intensifies, which has potential safety hazards and causes secondary pollution. Moreover, the powder (aluminum oxide) generated by corrosion will contaminate the washed clothes, having potential safety hazards. ③ The cost problem of the aluminum alloy bracket main body: The material cost is high, the processing process is complex, and the processing cost is high, resulting in a relatively high overall cost of the inner cylinder bracket. Summary of the Utility Model
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide an inner cylinder bracket for a drum washing machine, which not only has high strength and rigidity and can meet the needs of repeated long-term use of the drum washing machine, but also has high dimensional accuracy and good stability, will not generate corrosion, has high safety, low cost, and can be mass-produced.
[0005] The inner cylinder bracket for a drum washing machine according to an embodiment of the utility model includes:
[0006] A bracket main body, wherein the bracket main body is an SMC / BMC plastic part;
[0007] The shaft assembly has an embedded end, and the embedded end is fixed in the central part of the bracket body.
[0008] The inner drum bracket for a drum washing machine according to an embodiment of the present invention has the following advantages: First, it has good strength and rigidity and can meet the requirements of long-term repeated use of the drum washing machine. Second, it is simple to process, has high dimensional accuracy and stability and good consistency during mass production, and is not easily deformed. Third, it will not rust, the surface of the bracket body is smooth, and it can still keep the surface clean and hygienic even after long-term use, with high safety, which is beneficial to the long-term use of the drum washing machine. Fourth, the material cost of the bracket body 1 is low, the production is simple, and the production cost is low, thereby reducing the overall cost of the inner drum bracket for a drum washing machine according to an embodiment of the present invention, and it can be mass-produced.
[0009] In some embodiments, the wall thickness of the bracket body is ≥ 1.5 mm.
[0010] In some embodiments, the radially outer end of the bracket body is fixed to the inner drum.
[0011] In some embodiments, the radially outer end of the bracket body is fixed to the inner drum through a fixing member.
[0012] In some embodiments, the bracket body is an injection molded part or a compression molded part.
[0013] In some embodiments, the shaft assembly includes a shaft body and a shaft sleeve. The shaft body is a metal shaft body, and the shaft sleeve is a corrosion-resistant metal shaft sleeve. The shaft sleeve is nested outside the shaft body.
[0014] In some embodiments, the embedded end is provided with a rubber coating structure, and the outer diameter of the rubber coating structure is greater than the outer diameter of the shaft sleeve.
[0015] In some embodiments, the rubber coating structure includes at least one of an axial notch located on the periphery of the embedded end and an axial through hole located in the axial through hole of the embedded end.
[0016] In some embodiments, there are multiple axial notches, and the sizes of the multiple notches are distributed at intervals in the circumferential direction; there are multiple axial through holes, and the multiple axial through holes are distributed at intervals in the circumferential direction.
[0017] The present invention also proposes a drum washing machine.
[0018] The drum washing machine according to an embodiment of the present invention includes the inner drum bracket for a drum washing machine according to any one of the embodiments of the present invention.
[0019] Since the drum washing machine according to the embodiment of the present utility model adopts the inner drum support for the drum washing machine according to the embodiment of the present utility model, it has the same advantages as the inner drum support for the drum washing machine according to the embodiment of the present utility model, and will not be elaborated here.
[0020] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:
[0022] Figure 1 is a front schematic view of the inner drum support for the drum washing machine according to the embodiment of the present utility model;
[0023] Figure 2 is a back schematic view of the inner drum support for the drum washing machine according to the embodiment of the present utility model;
[0024] Figure 3 is Figure 2 a schematic view of the support body in
[0025] Figure 4 is Figure 2 a schematic view of the shaft assembly in
[0026] Figure 5 is an assembly schematic view of the inner drum support for the drum washing machine according to the embodiment of the present utility model and the inner drum;
[0027] Figure 6 is a schematic view of the shaft assembly of the existing inner drum support for the drum washing machine.
[0028] Reference numerals:
[0029] Inner drum support 1000 for drum washing machine; Support body 1; Radial fixing hole 101; Shaft assembly 2; Shaft body 201; Embedded end 2011; Axial notch 20111; Axial through hole 20112; Shaft sleeve 201; Inner drum 2000. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0030] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.
[0031] The following will be combined with Figures 1 to 5To describe the inner drum bracket 1000 for a drum washing machine and the drum washing machine according to the embodiments of the present utility model.
[0032] As Figures 1 to 5 shown, the inner drum bracket 1000 for a drum washing machine according to the embodiments of the present utility model includes a bracket main body 1 and a shaft assembly 2.
[0033] Among them, the bracket main body 1 is an SMC / BMC plastic part. In other words, the bracket main body 1 is made of SMC / BMC material. The SMC / BMC material is a thermosetting resin composite material, that is, bulk molding compound, and has great advantages in strength and rigidity.
[0034] The cross-sectional shape of the bracket main body 1 is basically the same as that of the bracket main body of a conventional inner drum bracket, including U-shaped, W-shaped and I-shaped, so that the inner drum bracket 1000 for a drum washing machine according to the embodiments of the present utility model can be directly applied to the working conditions of a conventional inner drum bracket for an existing drum washing machine. The bracket main body 1 can meet the technical requirements of the inner drum bracket 1000 for a drum washing machine in terms of size, strength and rigidity. The outer diameter of the bracket main body 1 is determined according to the inner drum 2000 of the drum washing machine.
[0035] The bracket main body 1 is made of SMC / BMC material. For example, through injection molding or compression molding, the molding accuracy is high, which ensures that the key dimensions of the bracket main body 1 after molding, mainly including runout, end runout and outer diameter dimensions, etc., meet the design requirements, and no subsequent shaping or processing is required. It meets the design requirements as soon as it is taken out of the mold, that is, the bracket main body 1 has high dimensional accuracy and high stability.
[0036] The bracket main body 1 is made of SMC / BMC material and will not undergo a chemical corrosion reaction with the aqueous solution containing detergent inside the washing machine. Moreover, the surface of the SMC / BMC main body is relatively smooth, and the surface hardness is high and smooth, and it is not easy to attach lint or dirt generated during washing. By using the flushing force of the water flow during the washing of the washing machine itself and the centrifugal force during dehydration, it can ensure the long-term cleanliness and hygiene of the surface of the inner drum 2000 bracket main body 1, and the safety is high.
[0037] The bracket main body 1 is made of SMC / BMC material, and the material cost is low. It can be obtained by injection molding or compression molding, and then simple deburring can be carried out. It can be produced automatically, the production is simple, and the processing cost is low, which reduces the cost of the inner drum bracket 1000 for a drum washing machine, and has great advantages in mass production.
[0038] The shaft assembly 2 has an embedded end 2011, and the embedded end 2011 is fixed in the central part of the bracket main body 1. The shaft assembly 2 needs to ensure that the strength performance and rigidity meet the use requirements of the inner drum bracket 1000 for a drum washing machine.
[0039] The inner drum bracket 1000 for a drum washing machine according to an embodiment of the present utility model has the following advantages: First, it has good strength and rigidity, and can meet the requirements of long-term repeated use of the drum washing machine. Second, it is simple to process, has high dimensional accuracy, stability, and good consistency during mass production, and is not easily deformed. Third, it will not rust. The surface of the bracket body 1 is smooth, and even after long-term use, it can still keep the surface clean and hygienic, with high safety, which is beneficial to the long-term use of the drum washing machine. Fourth, the material cost of the bracket body 1 is low, the production is simple, and the production cost is low. As a result, the overall cost of the inner drum bracket 1000 for a drum washing machine according to an embodiment of the present utility model is reduced, and it can be mass-produced.
[0040] In some embodiments, the wall thickness of the bracket body 1 is ≥ 1.5 mm. That is to say, the thinnest part of the wall thickness of the bracket body 1 is not less than 1.5 mm, which can ensure that the strength performance and rigidity of the bracket body 1 meet the use requirements.
[0041] In some embodiments, the outer radial end of the bracket body 1 is fixed to the inner drum 2000, so that the inner drum bracket 1000 for a drum washing machine according to an embodiment of the present utility model is fixed on the inner drum 2000, and the fixation is simple and reliable.
[0042] In some embodiments, the outer radial end of the bracket body 1 is fixed to the inner drum 2000 through a fixing member (not shown in the figure), so that the inner drum bracket 1000 for a drum washing machine according to an embodiment of the present utility model is fixed on the inner drum 2000, and the fixation is simple and reliable.
[0043] Specifically, the fixing member can be a screw or a rivet; the screw or the rivet can directly fix the bracket body 1 of the inner drum bracket 1000 for a drum washing machine according to an embodiment of the utility model on the inner drum 2000. For example, a radial fixing hole 101 is provided at the outer radial end of the bracket body 1, and the screw or the rivet passes through the inner drum 2000 and is fixed in the radial fixing hole 101. Further, an inner inlay (not shown in the figure) is also provided at the outer radial end of the bracket body 1. The inner inlay has the above-mentioned radial fixing hole 101, and the screw or the rivet passes through the inner drum 2000 and is fixed in the radial fixing hole 101. The inner inlay includes, but is not limited to, a metal insert and a ceramic insert. Among them, the metal insert can be an aluminum alloy insert, a powder metallurgy insert, a sheet metal insert, etc.
[0044] In some embodiments, the bracket body 1 is an injection molding part or a compression molding part, that is, the bracket body 1 is made by an injection molding or a compression molding method. It is simple to process, has low cost, high machining dimensional accuracy, stable dimensions, good dimensional consistency, and can be mass-produced.
[0045] In some embodiments, the shaft assembly 2 includes a shaft body 201 and a shaft sleeve 201; the shaft body 201 is a metal shaft body to ensure the strength and rigidity of the shaft body 201. For example, the shaft body 201 can be processed from 45 steel; the shaft sleeve 201 is a corrosion-resistant metal shaft sleeve to ensure the strength and rigidity of the shaft sleeve 201. The shaft sleeve 201 is nested outside the shaft body 201 to prevent a chemical corrosion reaction between the shaft sleeve 201 and the aqueous solution containing detergent inside the washing machine and thus prevent rusting.
[0046] In some embodiments, the embedding end 2011 is provided with a rubber coating structure, and the outer diameter of the rubber coating structure is greater than the outer diameter of the shaft sleeve 201. Since in the prior art, the embedding end of the shaft body is smaller than the outer diameter of the shaft sleeve (as Figure 6 shown), the rubber coating strength is relatively low. However, in this embodiment, the outer diameter of the embedding end 2011 of the shaft body 201 is greater than the outer diameter of the shaft sleeve 201, that is, the outer diameter dimension of the embedding end 2011 is increased relative to the outer diameter dimension of the embedding end of the shaft body in the prior art, so as to ensure that the rubber coating strength meets the requirements. When the capacity of the drum washing machine is relatively large or the dehydration speed is high, the service life of the inner drum bracket 1000 for the drum washing machine in this practical embodiment can be extended.
[0047] In some embodiments, the rubber coating structure includes at least one of an axial notch 20111 located on the periphery of the embedding end 2011 and an axial through hole 20112 located in the axial through hole 20112 of the embedding end 2011, so as to ensure that the rubber coating strength meets the requirements. When the capacity of the drum washing machine is relatively large or the dehydration speed is high, the service life of the inner drum bracket 1000 for the drum washing machine in this practical embodiment can be extended.
[0048] In some embodiments, there are multiple axial notches 20111, and the sizes of the multiple axial notches 20111 are distributed at intervals in the circumferential direction, so as to ensure that the rubber coating strength meets the requirements. When the capacity of the drum washing machine is relatively large or the dehydration speed is high, the service life of the inner drum bracket 1000 for the drum washing machine in this practical embodiment can be extended; there are multiple axial through holes 20112, and the multiple axial through holes 20112 are distributed at intervals in the circumferential direction, so as to ensure that the rubber coating strength meets the requirements. When the capacity of the drum washing machine is relatively large or the dehydration speed is high, the service life of the inner drum bracket 1000 for the drum washing machine in this practical embodiment can be extended.
[0049] The present utility model also proposes a drum washing machine.
[0050] The drum washing machine according to the embodiment of the present utility model includes the inner drum bracket 1000 for the drum washing machine in any embodiment of the present utility model.
[0051] Since the drum washing machine according to the embodiment of the present utility model adopts the inner drum bracket 1000 for the drum washing machine in the embodiment of the present utility model, it has the same advantages as the inner drum bracket 1000 for the drum washing machine in the embodiment of the present utility model, and will not be elaborated herein.
[0052] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0053] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.
Claims
1. An inner drum support for a drum washing machine, characterized in that: include: A bracket body, wherein the bracket body is a SMC / BMC plastic part; The shaft component has an embedded end, and the embedded end is embedded in the central part of the bracket body.
2. The inner drum support for a drum washing machine according to claim 1, characterized in that: The wall thickness of the bracket body is ≥1.5 mm.
3. The inner drum support for a drum washing machine according to claim 1, characterized in that: The radial outer end of the bracket body is fixed to the inner cylinder.
4. The inner drum support for a drum washing machine according to claim 3, characterized in that: The radial outer end of the bracket body is fixed to the inner tube via a fixing member.
5. The inner drum support for a drum washing machine according to claim 1, characterized in that: The support body is an injection-molded part or a compression-molded part.
6. The inner drum support for a drum washing machine according to claim 1, characterized in that: The shaft assembly comprises a shaft body and a shaft sleeve, wherein the shaft body is a metal shaft body, the shaft sleeve is a corrosion-resistant metal shaft sleeve, and the shaft sleeve is nested outside the shaft body.
7. The inner drum support for a drum washing machine according to claim 6, characterized in that: The embedded end is provided with a rubber-encapsulated structure, and the outer diameter of the rubber-encapsulated structure is greater than the outer diameter of the shaft sleeve.
8. The inner drum support for a drum washing machine according to claim 7, characterized in that: The encapsulation structure includes at least one of an axial notch located on the periphery of the embedding end and an axial through hole located at the embedding end.
9. The inner drum support for a drum washing machine according to claim 8, characterized in that: There are a plurality of axial notches, and the sizes of the plurality of axial notches are distributed at intervals along the circumferential direction; there are a plurality of axial through holes, and the plurality of axial through holes are distributed at intervals along the circumferential direction.
10. A drum washing machine, characterized in that: It comprises an inner drum support for a drum washing machine as described in any one of claims 1 to 9.