WO2019114306A1 - 一种洗衣机支架、使用该支架的洗衣机及结构优化方法 - Google Patents

一种洗衣机支架、使用该支架的洗衣机及结构优化方法 Download PDF

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Publication number
WO2019114306A1
WO2019114306A1 PCT/CN2018/100775 CN2018100775W WO2019114306A1 WO 2019114306 A1 WO2019114306 A1 WO 2019114306A1 CN 2018100775 W CN2018100775 W CN 2018100775W WO 2019114306 A1 WO2019114306 A1 WO 2019114306A1
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WO
WIPO (PCT)
Prior art keywords
washing machine
support
support plate
bracket
plate
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PCT/CN2018/100775
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English (en)
French (fr)
Inventor
杨阳
张有林
黄浩钦
陈省
李琦
荆振洋
Original Assignee
格力电器（武汉）有限公司
珠海格力电器股份有限公司
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Application filed by 格力电器（武汉）有限公司, 珠海格力电器股份有限公司 filed Critical 格力电器（武汉）有限公司
Priority to EP18889801.9A priority Critical patent/EP3636822B1/en
Publication of WO2019114306A1 publication Critical patent/WO2019114306A1/zh

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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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]

Definitions

  • the invention relates to the field of washing machines, in particular to a washing machine bracket, a washing machine using the same and a structure optimization method.
  • the washing machine holder is an inner cylinder for supporting the washing machine, and is used for transmitting the motion of the rotating shaft to the inner cylinder.
  • the washing machine bracket needs sufficient structural strength to meet certain life requirements due to the need to withstand the ballast and torsion of the inner cylinder.
  • the conventional bracket has a "several" shape or an I-shaped structure.
  • the washing machine bracket of this type satisfies the general needs, if the washing machine is operated at an ultra-high capacity for a long time, the problem of the bracket fracture may occur. For example, in the case of satisfying the rotational speed of 1400 rpm, there is not enough design margin, and there is a problem that the reliability of the product is lowered during long-term operation.
  • the object of the present invention is to provide a washing machine bracket, a washing machine using the same, and a structure optimization method for improving the reliability of the washing machine bracket.
  • the technical solution adopted by the present invention is a washing machine bracket for supporting the inner cylinder of the washing machine, comprising: at least two support arms, the support arm includes a first support plate and a connecting plate, and the first end of the connecting plate is The first support plate is connected to the first surface; wherein the connection between the first support plate and the connecting plate is provided with a transition structure.
  • the second support plate is disposed opposite to the first support plate, and the first surface of the second support plate is connected to the second end of the connecting plate.
  • the transition structure is also provided at the junction of the second support plate and the connecting plate.
  • the transition structure is a curved structure disposed at the first support plate and the connecting plate.
  • the second surface of the first support plate is provided with a first groove, and the position of the first groove is corresponding to the position of the connecting plate.
  • the washing machine bracket further includes a second supporting plate disposed opposite to the first supporting plate, the first surface of the second supporting plate is connected with the second end of the connecting plate, and the second support
  • the second side of the plate is also provided with a second groove, and the position of the second groove corresponds to the position of the connecting plate.
  • the depth of the first groove and/or the second groove is decreasing in a direction in which the center of the stent extends outward.
  • the first groove and/or the second groove are V-shaped grooves.
  • the washing machine bracket further includes a second supporting plate disposed opposite to the first supporting plate, the first surface of the second supporting plate is connected with the second end of the connecting plate, the first support The plate and the second support plate are connected at a distal end of the support arm by a joint.
  • the end position of the support arm is provided with a through groove penetrating the first support plate and the second support plate.
  • the shape of the through groove is adapted to the shape of the end of the support arm such that the end material distribution of the support arm tends to be uniform.
  • the through groove is provided with a recess facing the central portion of the bracket.
  • the concave portion has a triangular shape structure.
  • the washing machine bracket further includes a second supporting plate disposed opposite to the first supporting plate, the first surface of the second supporting plate is connected with the second end of the connecting plate, the first support The width of the plate is less than the width of the second support plate.
  • a central portion of the first support plate and the second support plate has a waist-like structure.
  • the waist-shaped structure of the first support plate has a waist-receiving width greater than the waist-receiving width of the second support plate.
  • the web is highly degraded from the center outward direction.
  • the washing machine bracket further includes a second support plate disposed opposite to the first support plate, and the first side of the second support plate The second end of the connecting plate is connected, wherein the first supporting plate between the two adjacent supporting arms is smoothly transitioned, and the second supporting plate between the two adjacent supporting arms is smooth
  • a partition is disposed at the junction of the first support plate and the second support plate between the two adjacent support arms.
  • the width of the first support plate is smaller than the width of the second support plate
  • the partition plate has a wedge-shaped structure to correspond to the widths of the first support plate and the second support plate.
  • the present invention also provides a washing machine comprising the above bracket and an inner cylinder, the bracket being connected to a rear end connecting body of the inner cylinder.
  • the invention also provides a structure optimization method for a washing machine bracket, comprising the following steps:
  • the present invention has at least the following beneficial effects: the present invention provides a transition structure at the junction of the first support plate and the connecting plate, the transition structure reducing the connection between the first support plate and the connecting plate Stress concentration increases the strength of the support arm and reduces the probability of fracture.
  • FIG. 1 is an exploded perspective view showing the cooperation structure of the washing machine bracket and the inner cylinder of the washing machine of the present invention.
  • FIG. 2 is a bottom view of the mating structure of the washing machine bracket of the present invention and the inner cylinder of the washing machine.
  • Figure 3 is a cross-sectional view of the support arm of the washing machine holder of the present invention.
  • Figure 4 is a cross-sectional view of the upper end of the washing machine holder of the present invention.
  • Figure 5 is a first perspective view of the washing machine bracket of the present invention.
  • Figure 6 is a second perspective view of the washing machine bracket of the present invention.
  • Figure 7 is a schematic view showing the fluid flow direction of the washing machine holder of the present invention.
  • FIG. 8 is a schematic diagram showing the structure optimization design process of the washing machine bracket of the present invention.
  • spatially relative terms such as “above”, “above”, “on top”, “above”, etc., may be used herein to describe as in the drawings.
  • the exemplary term “above” can include both “over” and "under”.
  • the device can also be positioned in other different ways (rotated 90 degrees or at other orientations) and the corresponding description of the space used herein is interpreted accordingly.
  • the present invention provides a washing machine bracket, which includes a bracket 100 for supporting a washing machine inner cylinder 200.
  • the bracket 100 is disposed at a rear end of the washing machine inner cylinder 200 through its supporting arm 110.
  • the body 210 in particular, can be connected to the rear end connector 210 by screws through screw holes (not shown) on the support arm 110.
  • the bracket 100 includes: at least two support arms 110 , which may be, for example, two, or four, five, etc., as long as the rear end connecting body of the inner tube of the washing machine matches the same. can.
  • the present embodiment is described by taking the bracket 100 having three support arms 110 as an example.
  • the support arm 110 includes a first support plate 111 and a connecting plate 113.
  • the first end of the connecting plate 113 is connected to the first surface of the first supporting plate 111.
  • the first supporting plate 111 and the first supporting plate 111 are A transition structure 114 is provided at the junction of the connecting plates 113. The transition structure reduces the stress concentration at the junction of the first support plate 111 and the connecting plate 113, improves the strength of the support arm 110, and reduces the probability of fracture.
  • the bracket 100 further includes a second supporting plate 112 disposed opposite to the first supporting plate 111, a first surface of the second supporting plate 112 and a second end of the connecting plate 113
  • the connection, the arrangement of the second support plate 112 provides a better bottom support, avoiding the force of the connection plate 113 being too concentrated, so that the support 100 has a stronger structural strength.
  • the transition structure 114 is also disposed at the junction of the second support plate 112 and the connecting plate 113.
  • the transition structure 114 is a curved surface structure disposed at the first support plate 111 and the connecting plate 113, and the curved structure has good stress dispersion, thereby improving the joint. strength.
  • the transition structure 114 may also be a non-curved planar structure, for example, may be a transition plane similar to a 45 degree angle or other angle.
  • the transition structure between the second support plate 112 and the connecting plate 113 also adopts the same structure to improve the overall structural strength.
  • the second surface of the first support plate 111 is provided with a first recess 115a, and the position of the first recess 115a is corresponding to the position of the connecting plate 113, specifically, the connection
  • the plate 113 extends outward from the center of the bracket 100, and the position of the first recess 115a also extends outward from the starting position of the connecting plate 113 until the end of the connecting plate 113.
  • the first recess 115a is not necessarily required. Starting from the extended starting position of the connecting plate 113, it is not always necessary for the first recess 115a to end at the extended end position of the connecting plate 113.
  • a second recess 115b is also disposed on the second surface of the second support plate 112, and the position of the second recess 115b is also disposed corresponding to the position of the connecting plate 113, and is on the first supporting plate 111.
  • the arrangement is the same, or it can be set in different lengths. For example, if the length of the first groove 115a is short, the length of the second groove 115b can be set longer to make the bottom end more resistant. Great force.
  • the length of the first groove 115a and the second groove 115b is the same as the length of the connecting plate 113, such a structure that the structure of the support arm 110 as a whole is similar to a " ⁇ " shape, so that the parts of the support arm are The material distribution of the structure is uniform, and the stress is effectively prevented from being too concentrated in a certain portion, thereby improving the structural strength of the support arm 110 and further reducing the probability of fracture.
  • the depth of the first groove 115a or the second groove 115b is decreased by the direction in which the center of the bracket extends outward, or the first groove 115a and the second groove 115b are both The depth of the center of the stent extends outward in a decreasing direction.
  • the height of the connecting plate 113 extending outward from the center of the bracket 100 is reduced. Therefore, the depth of the first recess 115a or the second recess 115b also has a decreasing depth during the outward extension of the center of the bracket 100. Therefore, the cross-sectional material at different positions of the support arm 110 is evenly distributed, and the thickness tends to be uniform, which is advantageous for improving the bending strength of the support arm 110.
  • the thickness uniformity of the fabric is used. If it is high, it will help the internal heat dissipation to be uniform and reduce the probability of casting pores.
  • the first groove 115a or the second groove 115b may be a V-shaped groove, or the first groove 115a and the second groove 115b are all V-shaped grooves.
  • the V-shaped groove is not an absolute V-shape, but as shown in FIG. 3, the V-shaped bottom is a smooth curved surface transition, and the curved surfaces on both sides are also smoothly transitioned to the first support plate 111 and the second support.
  • the second side of the plate 112 is such that the material distribution of the entire section is more uniform and the bending strength is better.
  • the first groove 115a and the second groove 115b may also be U-shaped or W-shaped, and may be disposed according to the arrangement of the transition structure 114, and the material distribution is uniform.
  • the first support plate 111 and the second support plate 112 are connected at the end of the support arm 110 through a connecting portion 116, and the connecting portion 116 provides a first support.
  • the edge of the plate 111 and the second support plate 112 is supported to ensure the structural strength of the end of the support arm 110.
  • the end position of the support arm 110 is provided with a through groove 117 penetrating through the first support plate 111 and the second support plate 112.
  • the slag stain is easy to accumulate, and the closed design makes the fluid cannot be flushed in place.
  • the setting bracket 100 of the middle slot 117 is rotated, the fluid can flow through, and the slag stain in the slot and the slot can be washed by the hydraulic force to improve the surface cleanliness of the bracket 100.
  • the shape of the through groove 117 is adapted to the shape of the end of the support arm 110 such that the end material distribution of the support arm 110 tends to be uniform.
  • the shape of the through groove 117 is similar to the shape formed by the opposite connection of the two "C" shapes, so that the material distribution areas on both sides of the end portion and the end portion are uniform, ensuring the structural strength of the end portion, and at the same time
  • the peripheral wall structure of the through groove 117 plays a good stress dispersion.
  • the through groove 117 is provided with a recess 118 facing the central portion of the bracket.
  • the recess 118 may have a triangular structure. Further improving the uniformity of the end structural material.
  • a fluid rotating groove is formed, and the groove 117 is concave toward the center of the bracket 100 (or a triangle) Shape structure) has a good flow field guiding effect in the process of fluid flowing out from the rotating groove, the flow field is smoother, the flow field wind resistance is reduced, and the power coefficient of COP (coefficient of performance) is increased.
  • the width of the first support plate 111 is smaller than the width of the second support plate 112, and the overall cross section thereof is similar to the trapezoidal portion, so that the structure of the bracket 100 is more lightweight, and the bracket and the inner portion are also satisfied.
  • the central regions of the first support plate 111 and the second support plate 112 are waist-like structures 121a, 121b, so that the support arms 110 extend smoothly outward. , to improve its bending strength.
  • the waist-shaped structure 121a of the first support plate 111 has a waist-receiving width greater than that of the first support plate 112.
  • the waist of the first support plate 111 is larger than the waist of the second support plate 112, so that it can be better connected with the lower end of the inner cylinder, and the smaller waist of the second support plate 112 ensures better Support strength.
  • the connecting plate 113 is highly degraded from the center outward direction, so that the bracket 100 can be better connected to the inner cylinder 200, and at the same time, has a better supporting effect.
  • the number of the support arms 110 is three or more, wherein the first support plates 111 between the two adjacent support arms 110 are smoothly transitioned, and the adjacent two The second support plate 112 between the support arms 110 is smoothly transitioned, and the connection between the first support plate 111 and the second support plate 112 between the two adjacent support arms 110 is set.
  • the simulation analysis results show that the joint between the adjacent support arm 110 and the joint of the second support plate 112 are relatively high, and when the partition 119 is on the first support plate.
  • the arrangement between the 111 and the second support plate 112 has a good force transmission effect, especially when the bracket 100 is subjected to a torsional load, and the torsional strength is well improved.
  • the width of the first support plate 111 is smaller than the width of the second support plate 112 (the cross-sectional width extending outward from the center of the bracket), and the partition plate 119 has a wedge-shaped structure to The widths of the first support plate 111 and the second support plate 112 correspond to each other, and the wedge-shaped partition plate has a good force transmission function, and uniformly distributes the force to the second support plate 112.
  • the bracket 100 is integrally molded by using an aluminum material and a rigid rotating shaft 101 to ensure the connection strength between the bracket 100 and the rotating shaft 101.
  • the washing machine bracket provided in this embodiment is verified by finite element analysis, and has good stress improvement under ballast conditions compared with the conventional bracket, and also has good stress improvement under the torsional load condition.
  • the washing machine bracket provided in the embodiment has a simple structure, less material requirements, and is more suitable for lightweight requirements.
  • a third support plate may be disposed between the first support plate 111 and the second support plate 112 to form a “Wang”-shaped support structure, but the overall quality of such a support structure is heavier and unsuitable for light. Quantitative needs.
  • the present invention also provides a washing machine using the bracket 100 described in this embodiment.
  • the bracket 100 has a support arm 110, and the support arm 110 is provided with a screw hole.
  • the support arm 110 can be connected to the rear end connecting body 210 of the inner cylinder 200 by screws.
  • the connection with the inner cylinder is not limited to the manner of connecting by screws.
  • the invention also provides a structure optimization method for a washing machine bracket, as shown in FIG. 8, comprising the steps of:
  • topology optimization is performed, and the condition setting is performed according to the working overview of the bracket during the optimization process, including setting of the objective function, setting of the constraint condition, and setting of the load condition;
  • the hand board can be made, and then the hand board can be used for relevant experimental verification.
  • the invention realizes the simulation of the original model and the new model under the same ballast and torsion load respectively, saves the mold opening cost of the pre-development, and avoids the product failing to meet the test and test requirements after inputting the mold opening cost.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Evolutionary Computation (AREA)
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  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
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Abstract

一种洗衣机支架（100）、使用该支架（100）的洗衣机及结构优化方法，该支架（100）包括：至少两个支撑臂（110），该支撑臂（110）包括第一支撑板（111）以及连接板（113），该连接板（113）的第一端与该第一支撑板（111）第一面连接；其中，该第一支撑板（111）与该连接板（113）的连接处设有过渡结构（114）。通过在第一支撑板（111）与连接板（113）的连接处设置了过渡结构（114），该过渡结构（114）减小了第一支撑板（111）与连接板（113）连接处的应力集中，提高了支撑臂的强度，降低了断裂的概率。

Description

一种洗衣机支架、使用该支架的洗衣机及结构优化方法 技术领域
本发明涉及洗衣机领域，尤其涉及一种洗衣机支架、使用该支架的洗衣机及结构优化方法。
背景技术
洗衣机支架是用于支撑洗衣机的内筒，同时用于传递旋转轴的运动输出到内筒上。
洗衣机支架由于需要承受内筒的压载以及扭载，需要足够的结构强度才能达到一定的寿命要求。传统的支架截面为“几”字形结构或工字型结构，这类结构的洗衣机支架虽然满足一般的需求，但若洗衣机长期以超高容量运行，则可能出现支架断裂的问题。又例如在满足1400rpm转速的情况下，未留有足够的设计余量，长期运行时也会存在产品可靠性降低的问题。
发明内容
本发明的目的是针对上述现有技术存在的缺陷，提供一种洗衣机支架、使用该支架的洗衣机及结构优化方法，以提高洗衣机支架的可靠性。
本发明采用的技术方案是，一种洗衣机支架，用于支撑洗衣机内筒，包括：至少两个支撑臂，所述支撑臂包括第一支撑板以及连接板，所述连接板的第一端与所述第一支撑板第一面连接；其中，所述第一支撑板与所述连接板的连接处设有过渡结构。
优选为，还包括与所述第一支撑板相对设置的第二支撑板，所述第二支撑板的第一面与所述连接板的第二端连接。
优选为，所述第二支撑板与所述连接板的连接处也设置有所述过渡结构。
优选为，所述过渡结构为设置在所述第一支撑板与所述连接板处的曲面结构。
优选为，所述第一支撑板的第二面设置有第一凹槽，所述第一凹槽的位置对应所述连接板的位置设置。
优选为，所述洗衣机支架还包括与所述第一支撑板相对设置的第二支撑板，所述第二支撑板的第一面与所述连接板的第二端连接，所述第二支撑板的第二面也设置有第二凹槽，所述第二凹槽的位置对应所述连接板的位置设置。
优选为，所述第一凹槽和/或所述第二凹槽由所述支架中心向外延伸的方向深度递减。
优选为，所述第一凹槽和/或所述第二凹槽为V形槽。
优选为，所述洗衣机支架还包括与所述第一支撑板相对设置的第二支撑板，所述第二支撑板的第一面与所述连接板的第二端连接，所述第一支撑板与所述第二支撑板在所述支撑臂的末端处通过一连接部连接。
优选为，所述支撑臂的末端位置设置有一贯穿第一支撑板和第二支撑板的通槽。
优选为，所述通槽的形状与所述支撑臂末端的形状相适应以使得所述支撑臂的末端材料分布趋于均匀。
优选为，所述通槽设置有一朝向所述支架中心部位的凹部。
优选为，所述凹部呈三角形状结构。
优选为，所述洗衣机支架还包括与所述第一支撑板相对设置的第二支撑板，所述第二支撑板的第一面与所述连接板的第二端连接，所述第一支撑板的宽度小于所述第二支撑板的宽度。
优选为，所述第一支撑板和所述第二支撑板的中部区域呈收腰状结构。
优选为，所述第一支撑板的收腰状结构的收腰幅度大于第二支撑板的收腰幅度。
优选为，所述连接板由中心向外的方向高度递减。
优选为，所述支撑臂的数量为三个或三个以上，所述洗衣机支架还包括与所述第一支撑板相对设置的第二支撑板，所述第二支撑板的第一面与所述连接板的第二端连接，其中，相邻的两个所述支撑臂之间的第一支撑板顺滑过渡衔接，相邻的两个所述支撑臂之间的第二支撑板顺滑过渡衔接，在所述相邻的两个所述支撑臂之间的第一支撑板和第二支撑板的衔接处设置有一隔板。
优选为，所述第一支撑板的宽度小于所述第二支撑板的宽度，所述隔板呈楔形结构以与所述第一支撑板、第二支撑板的宽度相对应。
本发明同时还提供一种洗衣机，包括上述支架和内筒，所述支架与所述内筒的后端连接体连接。
本发明同时还提供一种洗衣机支架的结构优化方法，包括以下步骤：
S1,获取原始支架的原始模型，在极限载荷工况下对所述原始模型进行有限元分析；
S2，根据分析结果进行原始特征模型构造；
S3，进行拓扑优化；
S4，根据优化结果完成新模型的三维构造；
S5，对新模型的三维构造进行有限元分析验证。
与现有技术相比，本发明至少具有以下有益效果：本发明通过在第一支撑板与连接板的连接处设置了过渡结构，该过渡结构减小了第一支撑板与连接板连接处的应力集中，提高了支撑臂的强度，降低了断裂的概率。
附图说明
构成本申请的一部分的说明书附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1为本发明洗衣机支架与洗衣机内筒的配合结构分解示意图。
图2为本发明洗衣机支架与洗衣机内筒的配合结构底面视图。
图3为本发明洗衣机支架的支撑臂截面视图。
图4为本发明洗衣机支架的上端截面视图。
图5为本发明洗衣机支架的第一视角示意图。
图6为本发明洗衣机支架的第二视角示意图。
图7为本发明洗衣机支架的流体流动方向示意图。
图8为本发明洗衣机支架的结构优化设计流程示意图。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、操作、器件、组件和/或它们的组合。
需要说明的是，本申请的说明书和权利要求书及附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便这里描述的本申请的实施方式例如能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
为了便于描述，在这里可以使用空间相对术语，如“在……之上”、“在……上方”、“在……上表面”、“上面的”等，用来描述如在图中所示的一个器件或特征与其他器件或特征的空间位 置关系。应当理解的是，空间相对术语旨在包含除了器件在图中所描述的方位之外的在使用或操作中的不同方位。例如，如果附图中的器件被倒置，则描述为“在其他器件或构造上方”或“在其他器件或构造之上”的器件之后将被定位为“在其他器件或构造下方”或“在其他器件或构造之下”。因而，示例性术语“在……上方”可以包括“在……上方”和“在……下方”两种方位。该器件也可以其他不同方式定位(旋转90度或处于其他方位)，并且对这里所使用的空间相对描述作出相应解释。
现在，将参照附图更详细地描述根据本申请的示例性实施方式。然而，这些示例性实施方式可以由多种不同的形式来实施，并且不应当被解释为只限于这里所阐述的实施方式。应当理解的是，提供这些实施方式是为了使得本申请的公开彻底且完整，并且将这些示例性实施方式的构思充分传达给本领域普通技术人员，在附图中，为了清楚起见，有可能扩大了层和区域的厚度，并且使用相同的附图标记表示相同的器件，因而将省略对它们的描述。
如图1及图2所示，本发明提出了一种洗衣机支架，该洗衣机支架包括支架100，用于支撑洗衣机内筒200，支架100通过其支撑臂110设置于洗衣机内筒200的后端连接体210，具体的，可以通过支撑臂110上的螺丝孔(图中未标示)利用螺钉连接到后端连接体210上。如图3至7所示，该支架100包括：至少两个支撑臂110，例如可以是两个，也可以是4个、5个等，只要洗衣机内筒的后端连接体与之相匹配即可。其中，本实施例以具有三个支撑臂110的支架100为例进行说明。所述支撑臂110包括第一支撑板111以及连接板113，所述连接板113的第一端与所述第一支撑板111第一面连接；其中，所述第一支撑板111与所述连接板113的连接处设有过渡结构114。该过渡结构减小了第一支撑板111与连接板113连接处的应力集中，提高了支撑臂110的强度，降低了断裂的概率。
作为本实施例的进一步改进，支架100还包括与所述第一支撑板111相对设置的第二支撑板112，所述第二支撑板112的第一面与所述连接板113的第二端连接，第二支撑板112的设置提供了更好的底部支撑，避免连接板113受力过于集中，使得支架100具有更强的结构强度。此外，本实施例中，所述第二支撑板112与所述连接板113的连接处也设置有所述过渡结构114。
作为本实施例的一种选择，所述过渡结构114为设置在所述第一支撑板111与所述连接板113处的曲面结构，曲面结构具有良好的应力分散作用，从而提高了连接处的强度。当然，作为其它可替代的结构，过渡结构114也可以是非曲面的平面结构，例如，可以是类似于45度角左右或其它角度的过渡平面。而第二支撑板112与连接板113之间的过渡结构也采用相同的结构以提高整体的结构强度。
作为本实施例的进一步改进，所述第一支撑板111的第二面设置有第一凹槽115a，所述第一凹槽115a的位置对应所述连接板113的位置设置，具体的，连接板113由支架100中心向外延伸，而第一凹槽115a的位置也是对应连接板113的起始位置开始向外延伸一直至连接板113的末端，当然，并非一定要使第一凹槽115a起始于连接板113的延伸起始位置，也并非一定要第一凹槽115a结束于连接板113的延伸结束位置。
同样的，在第二支撑板112的第二面也设置有第二凹槽115b，所述第二凹槽115b的位置也对应所述连接板113的位置设置，与在第一支撑板111上的设置方式相同，或者，也可以采用长度不同的方式设置，例如，若第一凹槽115a的长度较短，则第二凹槽115b的长度可以设置得更长，以起到使得底部承受更大的受力。
以第一凹槽115a、第二凹槽115b的长度与连接板113的长度相同的方式为例，这样的结构使得支撑臂110的结构整体呈类似于“χ”的形状，使得支撑臂各部分结构的材料分布均匀，有效的避免应力在某个部位过于集中，提高了支撑臂110的结构强度，进一步降低断裂的概率。
作为本实施例的进一步改进，所述第一凹槽115a或第二凹槽115b由所述支架中心向外延伸的方向深度递减，又或者，第一凹槽115a、第二凹槽115b均由所述支架中心向外延伸的方向深度递减。在本实施例中，连接板113由支架100中心向外延伸过程中，其高度递减，因而，第一凹槽115a或第二凹槽115b深度也有支架100中心向外延伸过程中其深度递减，从而使得在支撑臂110不同位置的截面材料分布均匀，厚度趋于一致，有利于提高支撑臂110的抗弯强度，同时，本实施例中，若采用铸铝铸造件制造时，面料厚度均匀度高的话有助于内部散热固化均匀，减少出现铸造气孔的概率。
作为一种选择，所述第一凹槽115a或第二凹槽115b可为V形槽，或者，第一凹槽115a、第二凹槽115b都为V形槽，当然，本实施例中所述的V形槽并非绝对的V形，而是如图3所示，其V形底部是平滑的曲面过渡，而两侧也是凸部相对的曲面平滑过渡到第一支撑板111和第二支撑板112的第二面上，这样使得整个截面的材料分布更加均匀，抗弯强度更好。当然，第一凹槽115a、第二凹槽115b也可以是U形或W形状，可根据过渡结构114的设置而设置，已达到材料分布均匀的目的。
如图3和图4所示，所述第一支撑板111与所述第二支撑板112在所述支撑臂110的末端处通过一连接部116进行连接，该连接部116提供了第一支撑板111与第二支撑板112的边缘支撑，保证了支撑臂110末端的结构强度。
作为本实施例的进一步改进，如图4所示，所述支撑臂110的末端位置设置有一贯穿第一支撑板111和第二支撑板112的通槽117。相对于传统的支架而言，由于传统支架的支撑板端部多为W形状或“几”字形状，渣渍容易堆积，而这种封闭的设计使得流体不能冲刷到位，对此，本实施例中通槽117的设置支架100在转动时，流体可以流动通过，借助水力可以冲刷槽内及槽口的渣渍，提高支架100的表面清洁度。
在本实施例中，所述通槽117的形状与所述支撑臂110末端的形状相适应以使得所述支撑臂110的末端材料分布趋于均匀。如图中所示，通槽117的形状类似于两个“C”形相对连接形成的形状，使得端部两侧，以及端部一侧的材料分布区域均匀，保证端部的结构强度，同时，通槽117的周壁结构起到了很好的应力分散作用。
在本实施例中，结合图4及图6所示，所述通槽117设置有一朝向所述支架中心部位的凹部118，作为一种凹部118的结构方式，所述凹部118可以呈三角形状结构，进一步的提高了端部结构材料的均匀性。
另外，结合图7所示，在第一支撑板111、第二支撑板112及连接板113的结构布置下，形成了流体旋转槽，通槽117的朝向支架100中心方向的内凹(或三角形状结构)在流体从旋转槽流出的过程中具有很好的流场导向作用，流场更加顺畅，降低了流场风阻，COP(coefficient of performance，性能系数)功率系数上升。
在本实施例中，所述第一支撑板111的宽度小于所述第二支撑板112的宽度，其截面整体类似梯形分部，这样使得支架100的结构更加轻量化，同时也满足支架与内筒后端面的特征配合。
作为本实施例的进一步改进，如图6所示，所述第一支撑板111和所述第二支撑板112的中部区域呈收腰状结构121a、121b，使得支撑臂110平滑的向外延伸，提高其抗弯强度。其中，所述第一支撑板111的收腰状结构121a的收腰幅度大于第一支撑板112的收腰幅度。第一支撑板111收腰幅度大于第二支撑板112收腰幅度，使得其可以更好的与内筒下端部连接，同时第二支撑板112较小的收腰幅度保证了其具有更好的支撑强度。
在本实施例中，所述连接板113由中心向外的方向高度递减，使得支架100可以更好的与内筒200连接，同时，具有更好支撑效果。
在本实施例中，所述支撑臂110的数量为三个或三个以上，其中，相邻的两个所述支撑臂110之间的第一支撑板111顺滑过渡衔接，相邻的两个所述支撑臂110之间的第二支撑板112顺滑过渡衔接，在所述相邻的两个所述支撑臂110之间的第一支撑板111和第二支撑板112的衔接处设置有一隔板119。本实施例中，通过仿真分析结果显示，相邻的支撑臂110之间的第一支撑板111的衔接处以及第二支撑板112的衔接处应力较大，当隔板119在第一支撑板111和第二支撑板112之间的设置时，具有很好的力传递作用，尤其是当支架100承受抗扭载荷时，抗扭强度得到了很好的改善。
如图5及图6所示，所述第一支撑板111的宽度小于所述第二支撑板112的宽度(由支架中心向外延伸的截面宽度)，所述隔板119呈楔形结构以与所述第一支撑板111、第二支撑板112的宽度相对应，楔形的隔板具有很好的力传递作用，均匀的将受力分散到第二支撑板112上。
本实施例中，支架100采用铝材与刚性旋转轴101一体铸造成型，保证了支架100与旋转轴101的连接强度。
本实施例中提供的洗衣机支架通过有限元分析验证，相对于传统的支架而言，在压载条件下具有良好的应力改善，在扭载条件下同样也具有良好的应力改善。本实施例中提供的洗衣机支架结构简单，材料需求更少，更加符合轻量化的需求。
在本实施例中，在第一支撑板111与第二支撑板112之间，还可设置第三支撑板，形成“王”字形支撑结构，但这样的支架结构整体质量更重，不适宜轻量化的需求。
参考图1及图2所示，本发明同时还提供一种洗衣机，该洗衣机采用了本实施例中所述的支架100，该支架100具有支撑臂110，支撑臂110上设置有螺丝孔，因此，可通过螺丝将 支撑臂110与内筒200的后端连接体210进行连接，当然，与内筒的连接方式并不限于通过螺丝进行连接的方式。
本发明同时提供了一种洗衣机支架的结构优化方法，如图8所示，包括步骤：
S1，获取原始支架的原始模型,在极限载荷工况下对所述原始模型进行有限元分析；
S2，根据分析结果进行原始特征模型构造；
S3，进行拓扑优化，优化过程中根据支架的工作概况，进行条件设置，包括目标函数的设置、约束条件的设置以及载荷工况的设置；
S4，根据优化结果完成新模型的三维构造；
S5，对新模型的三维构造进行有限元分析验证；
S6，根据有限元分析结果与原始模型的有限元分析结果进行对比，若不符合则进一步进行优化；
S7，若符合要求并确认结果更优后，可进行手板制作，之后可利用手板进行相关的实验验证。
本发明通过有限元分析技术，实现了分别对原始模型和新模型在同一压载、扭载下的模拟，节约前期开发的开模成本，避免投入开模成本后产品不满足试验测试要求。
除上述以外，还需要说明的是在本说明书中所谈到的“一个实施例”、“另一个实施例”、“实施例”等，指的是结合该实施例描述的具体特征、结构或者特点包括在本申请概括性描述的至少一个实施例中。在说明书中多个地方出现同种表述不是一定指的是同一个实施例。进一步来说，结合任一实施例描述一个具体特征、结构或者特点时，所要主张的是结合其他实施例来实现这种特征、结构或者特点也落在本发明的范围内。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (24)

  1. 一种洗衣机支架，用于支撑洗衣机内筒(200)，包括：至少两个支撑臂(110)，其特征在于，所述支撑臂(110)包括第一支撑板(111)以及连接板(113)，所述连接板(113)的第一端与所述第一支撑板(111)第一面连接；其中，所述第一支撑板(111)与所述连接板(113)的连接处设有过渡结构(114)。
  2. 根据权利要求1所述的洗衣机支架，其特征在于，还包括与所述第一支撑板(111)相对设置的第二支撑板(112)，所述第二支撑板(112)的第一面与所述连接板(113)的第二端连接。
  3. 根据权利要求2所述的洗衣机支架，其特征在于，所述第二支撑板(112)与所述连接板(113)的连接处也设置有所述过渡结构(114)。
  4. 根据权利要求1-3任一项所述的洗衣机支架，其特征在于，所述过渡结构(114)为设置在所述第一支撑板(111)与所述连接板(113)处的曲面结构。
  5. 根据权利要求1所述的洗衣机支架，其特征在于，所述第一支撑板(111)的第二面设置有第一凹槽(115a)，所述第一凹槽(115a)的位置对应所述连接板(113)的位置设置。
  6. 根据权利要求2所述的洗衣机支架，其特征在于，所述第二支撑板(112)的第二面设置有第二凹槽(115b)，所述第二凹槽(115b)的位置对应所述连接板(113)的位置设置。
  7. 根据权利要求5所述的洗衣机支架，其特征在于，所述洗衣机支架包括支架(100)，所述第一凹槽(115a)由所述支架(100)中心向外延伸的方向深度递减。
  8. 根据权利要求5所述的洗衣机支架，其特征在于，所述第一凹槽(115a)为V形槽。
  9. 根据权利要求2所述的洗衣机支架，其特征在于，所述第一支撑板(111)与所述第二支撑板(112)在所述支撑臂(110)的末端处通过一连接部(116)连接。
  10. 根据权利要求2所述的洗衣机支架，其特征在于，所述支撑臂(110)的末端位置设置有一贯穿第一支撑板(111)和第二支撑板(112)的通槽(117)。
  11. 根据权利要求10所述的洗衣机支架，其特征在于，所述通槽(117)的形状与所述支撑臂(110)末端的形状相适应以使得所述支撑臂(110)的末端材料分布趋于均匀。
  12. 根据权利要求10所述的洗衣机支架，其特征在于，所述洗衣机支架包括支架(100)，所述通槽(117)设置有一朝向所述支架(100)中心部位的凹部(118)。
  13. 根据权利要求12所述的洗衣机支架，其特征在于，所述凹部(118)呈三角形状结构。
  14. 根据权利要求2所述的洗衣机支架，其特征在于，所述第一支撑板(111)的宽度小于所述第二支撑板(112)的宽度。
  15. 根据权利要求2所述的洗衣机支架，其特征在于，所述第一支撑板(111)和所述第二支撑板(112)的中部区域呈收腰状结构(121a、121b)。
  16. 根据权利要求15所述的洗衣机支架，其特征在于，所述第一支撑板(111)的收腰状结构(121a)的收腰幅度大于第二支撑板(112)的收腰幅度。
  17. 根据权利要求1所述的洗衣机支架，其特征在于，所述连接板(113)由中心向外的方向高度递减。
  18. 根据权利要求2所述的洗衣机支架，其特征在于，所述支撑臂(110)数量为三个或三个以上，其中，相邻的两个所述支撑臂(110)之间的第一支撑板(111)顺滑过渡衔接，相邻的两个所述支撑臂(110)之间的第二支撑板(112)顺滑过渡衔接，在所述相邻的两个所述支撑臂(110)之间的第一支撑板(111)和第二支撑板(112)的衔接处设置有一隔板(119)。
  19. 根据权利要求18所述的洗衣机支架，其特征在于，所述第一支撑板(111)的宽度小于所述第二支撑板(112)的宽度，所述隔板(119)呈楔形结构以与所述第一支撑板(111)、第二支撑板(112)的宽度相对应。
  20. 根据权利要求6所述的洗衣机支架，其特征在于，所述洗衣机支架包括支架(100)，所述第二凹槽(115b)由所述支架(100)中心向外延伸的方向深度递减。
  21. 根据权利要求6所述的洗衣机支架，其特征在于，所述洗衣机支架包括支架(100)，所述第一支撑板(111)的第二面设置有第一凹槽(115a)，所述第一凹槽(115a)的位置对应所述连接板(113)的位置设置，所述洗衣机支架还包括与所述第一支撑板(111)相对设置的第二支撑板(112)，所述第二支撑板(112)的第一面与所述连接板(113)的第二端连接，所述第一凹槽(115a)和所述第二凹槽(115b)由所述支架(100)中心向外延伸的方向深度递减。
  22. 根据权利要求6所述的洗衣机支架，其特征在于，所述第二凹槽(115b)为V形槽。
  23. 根据权利要求6所述的洗衣机支架，其特征在于，所述第一支撑板(111)的第二面设置有第一凹槽(115a)，所述第一凹槽(115a)和所述第二凹槽(115b)为V形槽。24.一种洗衣机，包括如权利要求1-23任一所述的洗衣机支架，以及内筒(200)，所述洗衣机支架包括支架(100)，所述支架(100)与所述内筒(200)的后端连接体(210)连接。
  24. 一种洗衣机支架的结构优化方法，其特征在于，包括以下步骤：
    S1，获取原始支架的原始模型，在极限载荷工况下对所述原始模型进行有限元分析；
    S2，根据分析结果进行原始特征模型构造；
    S3，进行拓扑优化；
    S4，根据优化结果完成新模型的三维构造；
    S5，对新模型的三维构造进行有限元分析验证。
PCT/CN2018/100775 2017-12-11 2018-08-16 一种洗衣机支架、使用该支架的洗衣机及结构优化方法 WO2019114306A1 (zh)

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