Clothing treatment apparatus

Abstract

The present invention relates to a clothing treatment apparatus comprising: a cabinet; a drum including a drum body, which is provided inside the cabinet so to be rotatable and accommodate clothing, and a drum front portion, which is coupled to the front of the drum body so as to form an inlet through which the clothing is introduced and withdrawn; a front plate disposed between the cabinet and the drum front portion; and a support wheel coupled to the front plate so as to support the drum front portion, wherein the drum front portion includes: a coupling portion coupled to the drum body; a support portion which extends from the coupling portion toward the front plate and which is supported by the support wheel; a bent portion extending from the support portion toward the inlet; and a forming portion extending from the bent portion so as to form the inlet, the bent portion protruding beyond the forming portion.

Description

Garment processing equipment

[0001] The present invention relates to a clothing treatment device.

[0002] A garment treatment device is a general term for a device that can wash clothes and other items, and a device that can dry clothes and other items.

[0003] Generally, the drum for accommodating clothes is provided in a cylindrical shape and is applied to clothes treatment devices such as washing machines that wash the clothes with water and detergent, and dryers that remove moisture from the clothes.

[0004] The drum is provided to be rotatable in the garment treatment device so as to evenly transmit physical force to the entire garment or to evenly supply hot air to the entire garment.

[0005] The drums mentioned above possess a certain level of durability and are typically made of metal. This is to ensure that they maintain their shape even at high speeds.

[0006] Meanwhile, the drum of the garment treatment device is typically provided to include a cylindrical drum body that provides a space for accommodating garments, and a drum front portion that is rotatably supported at the front of the drum body so that the drum body can rotate around the same axis.

[0007] Korean Patent Publication No. 10-2023-0159211 discloses a drum including the front part of the drum, and a support wheel that is rotatably provided in contact with the front part of the drum to support the drum.

[0008] At this time, when the drum rotates, the clothing contained in the drum falls due to the interaction between gravity and centrifugal force, and the faster the rotation speed of the drum, the greater the force with which the clothing falls.

[0009] In conventional garment treatment devices, the front portion of the drum that comes into contact with the support wheel is simply designed as a flat shape without any special structure to enhance rigidity. This has led to problems such as the inability to properly absorb the shock generated when garments placed on the drum fall.

[0010] As a result, there was a problem in which the support wheel hit the drum due to the impact from the falling of clothing accommodated in the drum, causing structural deformation.

[0011] As the support wheel hit the drum, the surface of the drum became uneven and had an uneven shape, and contact with the support wheel was not constant, so friction and impact frequently occurred, and as a result, there was a problem of irregular and loud noise being generated in the clothing treatment device.

[0012] In addition, there was a problem that when the surface of the drum was deformed to become uneven, the balance of rotation of the drum was broken, increasing the vibration of the clothing treatment device.

[0013] Additionally, the vibration caused by the loss of rotational balance also puts stress on other parts within the garment processing device, which also reduces the overall durability of the garment processing device.

[0014] The present invention aims to provide a garment treatment device capable of ensuring the rigidity of the front portion of the drum that supports the load at the front of the drum.

[0015] The present invention aims to provide a clothing treatment device capable of preventing the front part of the drum from being stamped by a support wheel.

[0016] The present invention aims to provide a garment treatment device including a drum front part manufactured by using a method such as welding.

[0017] The present invention aims to provide a method for manufacturing a drum capable of reducing the material cost of the drum front portion forming the front of the drum.

[0018] The present invention provides a garment treatment device comprising a cabinet, a drum including a drum body rotatably provided inside the cabinet to accommodate garments, and a drum front part coupled to the front of the drum body to form an inlet for inserting and withdrawing the garments, a front plate disposed between the cabinet and the drum front part, and a support wheel coupled to the front plate to support the drum front part.

[0019] The drum front part may include a coupling part coupled to the drum body, a support part extending from the coupling part toward the front plate and supported by the support wheel, a bending part extending from the support part toward the inlet, and a forming part extending from the bending part to form the inlet.

[0020] The above-mentioned bending portion may be formed to protrude more than the forming portion.

[0021] The above-mentioned bending portion may include a first extension portion extending forward from the support portion toward the front plate, a second extension portion extending by bending from the first extension portion toward the inlet, and a third extension portion extending rearward from the second extension portion toward the forming portion.

[0022] The end of the first extension portion may be positioned forward of the forming portion.

[0023] The second extension portion may be positioned 1 mm to 3 mm in front of the forming portion.

[0024] The above support portion may include a first flat portion having a cylindrical shape extending from the connecting portion and having a first diameter, and a second flat portion having a cylindrical shape extending from the first flat portion and having a second diameter.

[0025] The above first diameter and the above second diameter may be provided to be different.

[0026] The above first diameter may be provided to be larger than the above second diameter.

[0027] The above first diameter may be provided to be 4 mm to 6 mm larger than the above second diameter.

[0028] The above second flat portion may be provided so that the support wheel is supported by contact with it.

[0029] The above-mentioned coupling portion may include a coupling groove into which the front of the drum body is received and coupled.

[0030] The above-mentioned joining hole may be formed by bending one end of the joining portion that joins the front of the drum body to surround the front of the drum body.

[0031] The above-mentioned forming portion may further include a bending portion that extends and bends toward the front plate from an end portion thereof.

[0032] The front part of the drum may be provided with a welding line formed by welding a metal plate.

[0033] The above welding line may be arranged to extend from the joining portion to the forming portion.

[0034] The present invention has the effect of providing a garment treatment device capable of ensuring the rigidity of the front part of the drum that supports the load at the front of the drum.

[0035] The present invention has the effect of providing a clothing treatment device capable of preventing the front part of the drum from being stamped by the support wheel.

[0036] The present invention has the effect of providing a clothing treatment device including a drum front part manufactured using a method such as welding.

[0037] The present invention has the effect of reducing the material cost of the drum front portion forming the front of the drum.

[0038] Figure 1 illustrates the appearance of the clothing treatment device of the present invention.

[0039] Figure 2 is a simplified illustration of the interior of the clothing treatment device of the present invention.

[0040] Figure 3A shows a concentrated view of the drum and the configuration arranged in front of the drum, and Figure 3B shows a concentrated view of the configuration arranged in the rear of the drum.

[0041] Figure 4 illustrates in detail the drum structure of the garment treatment device of the present invention.

[0042] Figure 5 illustrates a specific structure of the front part of the drum of the present invention.

[0043] Figure 6 shows a front view of the front part of the drum.

[0044] Figure 7 illustrates a process for manufacturing a cylindrical member that serves as the mother body of the front part of the drum of the present invention.

[0045] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0046] Unless otherwise defined, all terms in this specification have the same general meaning as those terms are understood by those skilled in the art to which the present invention pertains, and if a term used in this specification conflicts with the general meaning of the term, the definition used in this specification shall prevail.

[0047] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0048] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but these components are not limited by these terms. Furthermore, these terms are used solely to distinguish one component from another.

[0049] Even if they are different embodiments, the same or similar components as in the previous embodiment are given the same or similar drawing symbols, and redundant descriptions thereof are omitted.

[0050] The attached drawings are only intended to facilitate understanding of the embodiments described in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

[0051] Figure 1 illustrates the appearance of the clothing treatment device of the present invention.

[0052] Hereinafter, the clothing treatment device of the present invention will be described based on the garment treatment device being equipped with a dryer capable of drying clothes using hot air and steam.

[0053] However, this is only an example, and it does not exclude that the clothing treatment device of the present invention may be equipped with a washing machine that washes clothes using water and detergent.

[0054] That is, the drum of the clothing treatment device of the present invention described below can be applied to both a dryer and a washing machine.

[0055] A garment treatment device according to one embodiment of the present invention may include a cabinet (100) forming an exterior.

[0056] The cabinet (100) may include a front panel (110) forming the front surface of the garment treatment device, an upper panel (150) forming the upper surface, and a side panel (140) forming the side surface. The side panel (140) may include a left panel (141) forming the left surface. The front panel (110) may be provided with an opening (111) provided to communicate with the interior of the cabinet (100), and a door (130) rotatably coupled to the cabinet (100) to open and close the opening (111).

[0057] An operation panel (117) may be installed on the front panel (110). The operation panel (117) may be provided with an input unit (118) for receiving a control command from a user, and a display unit (119) for outputting information such as control commands that can be selected by the user. The control commands may include a drying course or drying option that can perform a series of drying operations. A control panel that controls internal components to execute the control commands input through the input unit (118) may be installed inside the cabinet (100). The control panel may be connected to components inside the garment treatment device and control the corresponding components to execute the input commands.

[0058] The above input unit (118) may be provided to include a power supply request unit that requests power supply to the garment treatment device, a course input unit that allows the user to select a desired course from among a plurality of courses, and an execution request unit that requests the start of a course selected by the user.

[0059] The above display unit (119) may be provided to include at least one of a display panel capable of outputting text and shapes and a speaker capable of outputting voice signals and sounds.

[0060] Meanwhile, the garment treatment device of the present invention may include a water storage tank (120) that is provided to separately store moisture generated during the drying process of the garment. The water storage tank (120) may include a handle that is provided so as to be withdrawable to the outside from one side of the front panel (110). The water storage tank (120) may be provided to collect condensate generated during the drying process. Thus, a user may withdraw the water storage tank (120) from the cabinet (100), remove the condensate, and then re-install it in the cabinet (100). Thus, the garment treatment device of the present invention may be placed even in a location where a drain or the like is not installed.

[0061] Meanwhile, the water storage tank (120) may be placed on the upper part of the door (130). This allows the user to bend his / her back relatively less when pulling out the water storage tank (120) from the front panel (110), thereby increasing user convenience.

[0062] Figure 2 is a simplified illustration of the interior of the clothing treatment device of the present invention.

[0063] Figure 3A shows a concentrated view of the drum and the configuration arranged in front of the drum, and Figure 3B shows a concentrated view of the configuration arranged in the rear of the drum.

[0064] The garment treatment device of the present invention may include a drum (200) accommodated inside the cabinet (100) to accommodate garments, a driving unit for rotating the drum (200), a heat exchange unit (900) provided to supply hot air to the drum (200), and a base (800) provided with a circulation path (820). The circulation path (820) is provided to communicate with the drum (200). Air discharged from the drum (200) may be supplied to the circulation path (820). In addition, air discharged from the circulation path (820) may be supplied back to the drum (200).

[0065] The above driving unit may include a motor unit (500) that provides power to rotate the drum (200). The driving unit may be directly connected to the drum (200) to rotate the drum (200).

[0066] For example, the driving unit may be provided as a DD (Direct Drive unit) type. Accordingly, the driving unit can control the rotational direction or rotational speed of the drum (200) by directly rotating the drum (200) without the need for a belt or pulley.

[0067] Of course, it can be equipped with a configuration such as a motor placed lower than the drum (200) and a belt connecting the motor and the outer surface of the drum.

[0068] The fact that the garment treatment device of the present invention is equipped with a DD type is only one embodiment, and it is not excluded that it is equipped with a belt / pulley type.

[0069] Meanwhile, the motor unit (500) may be configured to rotate at a high RPM. For example, it may rotate at a much higher RPM than the RPM at which clothing inside the drum (200) can rotate while attached to the inner wall of the drum (200).

[0070] However, there is a problem that the drying efficiency is reduced because the clothes inside the drum (200) are continuously attached to the inner wall of the drum (200) and rotate, and the part attached to the inner wall of the drum is not exposed to hot air.

[0071] Accordingly, if the rotor (520) is rotated at a low RPM so that the clothes inside the drum (200) roll or are stirred without being attached to the inner wall of the drum (200), a problem may arise in that the output or torque that the driving unit can generate is not properly utilized.

[0072] Accordingly, the driving unit of the garment treatment device of the present invention may further include a reducer (600) that can increase torque while utilizing the maximum output of the motor unit (500) by reducing the RPM.

[0073] Additionally, the driving unit may include a drum rotation shaft (6341) that is connected to the drum (200) and rotates the drum (200).

[0074] The drum (200) may be provided in a cylindrical shape to accommodate clothing. Furthermore, unlike drums used for washing, there is no need to introduce water into the drum (200) used only for drying, and there is no need to discharge liquid water condensed within the drum (200) to the outside of the drum (200). Accordingly, the drum (200) may omit the through holes provided along the circumference. In other words, the drum (200) used only for drying may be formed differently from the drum (200) used for washing.

[0075] The above drum (200) may be provided in an integral cylindrical shape, but may be manufactured in a form in which a drum body (210) including a circumferential surface and a drum rear surface (220) forming a rear surface are combined.

[0076] An inlet (211) for clothes to enter and exit may be provided at the front of the drum body (210). A driving unit for rotating the drum may be connected to the rear of the drum back surface (220). The drum body (210) and the drum back surface (220) may be joined by a fastening member such as a bolt, but are not limited thereto. As long as the drum body (210) and the drum back surface (220) are joined so that they can rotate together, they may be joined using various methods.

[0077] The drum body (210) may be equipped with a lift (213) that pulls the clothes contained therein upward so that the clothes can be mixed as the drum rotates. As the drum (200) rotates, the clothes contained therein can be repeatedly raised and lowered by the lift (213). The clothes contained within the drum (200) can be evenly exposed to hot air as they repeatedly rise and fall. Therefore, the drying efficiency is increased and the drying time is shortened.

[0078] A reinforcing bead (212) may be formed on the circumference of the drum body (210). The reinforcing bead (212) may be provided to be recessed or protruded on the inside / outside along the circumference of the drum (200). A plurality of such reinforcing beads (212) may be provided, and may be provided spaced apart from each other. The reinforcing beads (212) may form a certain pattern and may be provided on the inside / outside of the circumference.

[0079] The rigidity of the drum body (210) can be increased by the reinforcing beads (212). Therefore, even if a large amount of clothing is accommodated in the drum body (210) or a sudden rotational force is transmitted through the driving unit, the drum body (210) can be prevented from being twisted. In addition, when the reinforcing beads (212) are provided, the gap between the clothing and the inner circumference can be increased compared to when the circumference of the drum body (210) is provided as a flat surface, so that the hot air supplied to the drum (200) can be more effectively introduced between the clothing and the drum (200). That is, the reinforcing beads (212) have the effect of increasing the durability of the drum (200) and increasing the drying efficiency of the clothing treatment device.

[0080] Typically, in the case of a DD type washing machine, the driving unit is fixedly coupled to a tub that accommodates the drum (200), and the drum (200) can be supported by the tub by being coupled to the driving unit. However, since the garment treatment device of the present invention is equipped to intensively perform a drying process, the tub fixed to the cabinet (100) to accommodate the drum (200) can be omitted.

[0081] Accordingly, the garment treatment device of the present invention may further include a support member (400) provided to fix or support the drum (200) or the driving member inside the cabinet (100).

[0082] The support member (400) may include a front plate (410) disposed in front of the drum (200) and a rear plate (420) disposed in the rear of the drum (200). The front plate (410) and the rear plate (420) may be provided in a plate shape and may be disposed to face the front and rear of the drum (200). The distance between the front plate (410) and the rear plate (420) may be set to be equal to the length of the drum (200) or longer than the length of the drum (200). The front plate (410) and the rear plate (420) may be fixed to and supported by the bottom surface or base (800) of the cabinet (100).

[0083] The front plate (410) may be placed between the front panel forming the front surface of the cabinet and the drum (200). In addition, the front plate (410) may be provided with an input communication hole (412) communicating with the input port (211). Since the front plate (410) is provided with the input communication hole (412), clothes can be put into or taken out of the drum (200) while supporting the front surface of the drum (200).

[0084] The front plate (410) may include a duct connection portion (416) provided on the lower side of the injection communication hole (412). The duct connection portion (416) may form the lower surface of the front plate (410).

[0085] The front plate (410) may include a duct communication hole (417) penetrating the duct connection portion (416). The duct communication hole (417) is provided in a hollow shape so as to guide air discharged through the drum inlet (211) to the lower side of the drum (200). In addition, the air discharged through the drum (211) may be guided to the circulation path (820) located at the lower side of the drum (200).

[0086] A filter unit (not shown) may be installed in the above duct communication hole (417) to filter out lint or large foreign substances generated from clothing. The filter unit filters the air discharged from the drum (200), thereby preventing foreign substances from accumulating inside the clothing treatment device and preventing the accumulation of foreign substances from interfering with air circulation.

[0087] Since the above-mentioned inlet (211) is positioned at the front, it is preferable that the driving unit be installed on the rear plate (420) rather than the front plate (410). The driving unit may be provided to be mounted and supported on the rear plate (420). Accordingly, the driving unit can rotate the drum (200) while its position is stably fixed through the rear plate (420).

[0088] At least one of the front plate (410) and the rear plate (420) can rotatably support the drum (200). At least one of the front plate (410) and the rear plate (420) can rotatably accommodate the front or rear end of the drum (200).

[0089] For example, the front of the drum (200) may be rotatably supported on the front plate (410), and the rear of the drum (200) may be spaced apart from the rear plate (420) but connected to a motor unit (500) mounted on the rear plate (420) so as to be indirectly supported on the rear plate (420). As a result, the area where the drum (200) comes into contact with or rubs against the support unit (400) can be minimized, and unnecessary noise or vibration can be prevented from occurring.

[0090] Of course, the drum (200) may be provided to be rotatably supported on both the front plate (410) and the rear plate (420).

[0091] At least one support wheel (415) for supporting the front of the drum (200) may be provided at the lower portion of the front plate (410). The support wheel (415) may be rotatably provided on the rear surface of the front plate (410). The support wheel (415) may be rotated while in contact with the lower portion of the drum (200).

[0092] When the drum (200) is rotated by the driving unit, the drum (200) may be supported by a drum rotation shaft (6341) connected to the rear. When clothing is accommodated inside the drum (200), the load imposed on the drum rotation shaft (6341) by the clothing may increase. Therefore, there is a risk that the drum rotation shaft (6341) may bend due to the load.

[0093] When the above support wheel (415) supports the front lower portion of the drum (200), the load applied to the drum rotation shaft (6341) can be reduced. Accordingly, the drum rotation shaft (6341) can be prevented from bending and noise generated by vibration can also be prevented.

[0094] The above support wheels (415) are provided at positions symmetrical to each other with respect to the rotation center of the drum (200) to support the load of the drum (200). It is preferable that the support wheels (415) are provided at the lower left and right sides of the drum (200) to support the drum (200). However, the present invention is not limited thereto, and a greater number of support wheels (415) may be provided depending on the operating environment of the drum (200).

[0095] Figure 4 illustrates in detail the drum structure of the garment treatment device of the present invention.

[0096] Referring to FIG. 4(a), the drum (200) may include a drum body (210) provided to accommodate clothing and a drum back surface (220) coupled to the rear of the drum body (210) to prevent clothing accommodated in the drum body (210) from coming off.

[0097] The front of the drum body (210) may be provided with an inlet through which the clothing is inserted.

[0098] However, the thickness of the drum body (210) is relatively thin, corresponding to the thickness of the metal plate. As a result, when the slag drum body (210) rotates, the drum body (210) may be temporarily deformed due to inertial force or the load of clothing being concentrated, and the input port of the drum body (210) may be distorted and have difficulty maintaining its shape.

[0099] To prevent this, it may be considered to use a thick metal plate that is difficult to deform for the drum body (210). However, in this case, the overall weight of the drum (200) may increase, increasing the load on the motor unit, and the difficulty of forming and manufacturing the drum body (210) may unnecessarily increase.

[0100] To improve this, the drum (200) of the present invention may further include a drum front portion (230) that is coupled to the front of the drum body (210) and can maintain the durability and shape of the drum body (210).

[0101] Referring to FIG. 4(b) and FIG. 4(c), the drum front portion (230) can be coupled to the front of the drum body (210) to form the front of the drum (200).

[0102] The drum front portion (230) may be provided in a ring shape to form a drum inlet (211) therein. The drum front portion (230) may be arranged and coupled along the front perimeter of the drum body (210).

[0103] The drum front part (230) may be made of the same material as the drum body (210). However, it is not limited thereto, and the drum front part (230) may be made of a different material from the drum body (210).

[0104] For example, the drum front part (230) may be made of a metal material having greater rigidity and durability than the drum body (210).

[0105] Additionally, the drum front portion (230) may be manufactured from a metal plate having a thickness greater than that of the drum body (210).

[0106] Figure 5 illustrates a specific structure of the drum front part (230) of the present invention, and Figure 6 illustrates a front view of the drum front part (230).

[0107] The front drum part (230) of the present invention may be provided to extend forward from the drum body (210) so that it can be coupled to the front of the drum body (210) and supported by the support wheel (415).

[0108] The above support wheel (415) may be rotatably provided below the drum body (210) while being fixed to the front plate (410).

[0109] The above support wheel (415) may be provided to support the lower part of the front part of the drum (230).

[0110] In addition, the support wheels (415) may be provided in multiple numbers, and in this case, they are preferably arranged at regular intervals to uniformly support the load of the drum.

[0111] Meanwhile, the support wheel (415) may be made of a material such as felt, as long as it can rotatably support the front part of the drum (230) without excessively imposing frictional force on the front part of the drum (230).

[0112] The drum front part (230) may include a coupling part (2301) coupled to the drum body (210), a support part (2302) extending from the coupling part (2301) toward the front plate (410) and supported by the support wheel (415), a bending part (2303) extending from the support part (2302) toward the inlet (211), and a forming part (2304) extending from the bending part (2303) to form the inlet (211).

[0113] The above-mentioned bending portion (2303) may be formed to protrude more than the forming portion (2304). In other words, the above-mentioned bending portion (2303) may be formed to protrude closer to the front plate (410) than the forming portion (2304).

[0114] The above-mentioned bending portion (2303) may be provided to include a first extension portion (2303a) extending forward from the support portion (2302) toward the front plate (410), a second extension portion (2303b) extending by bending from the first extension portion (2303a) toward the inlet (211), and a third extension portion (2303c) extending rearward from the second extension portion (2303b) toward the forming portion (2304).

[0115] The above-mentioned bending portion (2303) may be provided by being formed convexly toward the front of the drum body (210), i.e., the front plate (410), from the above-mentioned support portion (2302), and may be provided to distribute the load transmitted to the drum front portion (230) and to play a role in reinforcing the rigidity and durability of the drum front portion (230).

[0116] The end of the first extension portion (2303a) may be arranged to be positioned forward compared to the forming portion (2304). In other words, the end of the first extension portion (2303a) may be positioned closer to the front plate (410) than to the forming portion (2304).

[0117] The above second extension portion (2303b) may be provided to be positioned 1 mm to 3 mm in front of the above forming portion (2304).

[0118] The above support portion (2302) may include a first flat portion (2302a) having a cylindrical shape extending from the connecting portion (2301) and having a first diameter, and a second flat portion (2302b) having a cylindrical shape extending from the first flat portion (2302a) and having a second diameter.

[0119] At this time, the first diameter and the second diameter may be provided to be different from each other.

[0120] The first diameter may be provided to be larger than the second diameter. For example, the first diameter may be provided to be 4 mm to 6 mm larger than the second diameter.

[0121] Meanwhile, the second flat portion (2302b) may be provided so that the support wheel (415) comes into contact with it and is supported. In other words, the support wheel (415) may be provided so that it comes into contact with the second flat portion (2302b) and supports the front portion of the drum (230).

[0122] Accordingly, the second flat portion (2302b) is supported by the support wheel (415) and can rotate together with the drum body (210). As a result, the entire drum (200) can rotate while maintaining the installed height.

[0123] Since the diameters of the first flat portion (2302a) and the second flat portion (2302b) are different from each other, the section connecting the first flat portion (2302a) and the second flat portion (2302b) can be provided to be inclined to connect the different diameters.

[0124] The section that is provided to be inclined and connects the first flat portion (2302a) and the second flat portion (2302b) may be provided to be inclined from the first flat portion (2302a) toward the second flat portion (2302b), thereby distributing the load transmitted to the drum front portion (230) and serving to reinforce the rigidity and durability of the drum front portion (230).

[0125] In order for the support wheel (415) to stably contact the second flat portion (2302b) and support the front part of the drum (230), the width of the second flat portion (2302b) may be provided to be larger than the width of the first flat portion (2302a).

[0126] Meanwhile, the above-mentioned coupling portion (2301) may include a coupling groove (2301a) in which the front of the drum body is received and coupled.

[0127] The above-mentioned joining groove (2301a) can be formed by bending one end of the joining portion (2301) that joins the front of the drum body (210) so as to surround the front of the drum body (210).

[0128] In other words, the above-mentioned joining groove (2301a) is formed in a shape that rolls outward from one end of the joining portion (2301) toward the outside of the drum body (210) and then rolls back again, and not only provides a space in which the front of the drum body (210) can be joined, but also further improves the strength of the joining portion (2301).

[0129] The above forming portion (2304) may further include a bending portion (2305) that extends and bends toward the front plate (410).

[0130] The above bending portion (2305) can be formed by having the end of the forming portion (2304) rolled toward the outside of the drum body (210).

[0131] The above bending portion (2305) is rolled toward the outside of the drum body (210) from the end of the forming portion (2304) and then rolled again toward the rear of the drum body (210), thereby not only preventing the clothing from being damaged when entering and exiting, but also further improving the strength of the front portion (230) of the drum.

[0132] Figure 7 illustrates a process for manufacturing a cylindrical member that serves as the mother body of the front part of the drum of the present invention.

[0133] The manufacturing process of the drum front part (230) of the present invention may include a blanking step (S1) of cutting a metal plate (M) whose width is much smaller than the metal plate for manufacturing the drum body (210) into a rectangular shape.

[0134] The above blanking step (S1) may include securing a length corresponding to the front circumference of the drum body (210) from the metal plate (M) and then cutting the metal plate (M).

[0135] The width of the metal plate (M) used in the blanking step (S1) may be much smaller than the front diameter of the drum body (210). Therefore, a small metal plate (M) can be used when manufacturing the drum front portion (230), thereby reducing material costs.

[0136] The length at which the above metal plate (M) is cut can be set to correspond to the length of the circumference of the drum body (210).

[0137] The manufacturing process of the drum front part (230) of the present invention may further include a manufacturing step (S2) of forming a cylindrical member (230a) that becomes the mother body of the drum front part (230) by connecting or combining both ends of the metal plate (M) to form it into a cylindrical shape.

[0138] In the above manufacturing step (S2), the metal plate (M) provided in a plate shape can be manufactured into a cylindrical member (230a) having a cylindrical shape.

[0139] In the above manufacturing step (S2), the metal plate (M) can be manufactured into a cylindrical member (230a) with a diameter smaller than the diameter of the drum body (210).

[0140] In addition, the manufacturing step (S2) may further include a welding step of welding both ends of the metal plate (M) bent into a cylindrical shape.

[0141] Through the above welding step, both ends of the metal plate (M) can be firmly fixed and joined using a welding machine and a welding metal member, etc.

[0142] The above metal plate (M) can be welded with both ends facing each other. As a result, the overall thickness of the drum front portion (230) can be manufactured to be consistent.

[0143] Additionally, both ends of the metal plate (M) can be welded even in a partially overlapping state. As a result, fixing force for the welded portion can be secured.

[0144] Through the above welding step, the metal plate (M) can be manufactured into the cylindrical member (230a), and the welding line (L) in the cylindrical member (230a) can correspond to the arrangement direction of the two ends facing each other of the metal plate (M).

[0145] That is, the cylindrical member (230a) can be manufactured by joining both ends of a rectangular metal plate by welding or the like, and the welding line (L) of the cylindrical member (230a) can be formed along the width direction of the metal plate.

[0146] The above welding line (L) may be formed in the height direction rather than the diameter direction based on the cylindrical member (230a), and when coupled to the drum body (210), the welding line (L) may be formed along the front-back direction of the drum (200).

[0147] As a result, the drum front portion (230) may be provided with a welding line (L) formed by welding a metal plate (M), and as shown in FIG. 6, the welding line (L) may be arranged to extend from the joining portion (2301) to the forming portion (2304).

[0148] Meanwhile, through the blanking step (S1) and the manufacturing step (S2), the cylindrical member (230a) can be expanded as is or its circumference can be formed to directly form the drum front portion (230). During this process, the process of scrapping and discarding the metal plate (M) can be omitted or minimized.

[0149] That is, in order to form the cylindrical member (230a), there is no need to remove the areas corresponding to the inside and outside of the cylindrical member (230a), and only the two ends of the metal plate need to be connected to each other, so the material utilization rate of the metal plate (M) can be greatly improved.

[0150] In addition, by manufacturing the cylindrical member (230a) using a metal plate (M) having a width much smaller than the diameter of the drum body (210), a small metal plate (M) can be actively utilized, which not only minimizes the weight and size of the metal plate (M) itself, but also greatly reduces the manufacturing cost of the drum front portion (230).

[0151] The present invention may be implemented in various modified forms, and the scope of the rights is not limited to the above-described embodiments.

[0152] Therefore, if a modified embodiment includes an element of the claims of the present invention, it should be considered to fall within the scope of the present invention.

Claims

1. Cabinet; A drum including a drum body rotatably provided inside the cabinet to accommodate clothing, and a drum front part coupled to the front of the drum body to form an inlet through which the clothing is taken out; A front plate disposed between the cabinet and the front part of the drum; It includes a support wheel that is coupled to the front plate and supports the front part of the drum; The front part of the drum above A coupling part coupled to the above drum body; A support portion extending from the above joint toward the front plate and supported by the support wheel; a bend extending from the support toward the inlet; and including a forming portion extending from the above-mentioned bending portion to form the above-mentioned inlet; A clothing treatment device characterized in that the above-mentioned bending portion is formed to protrude more than the above-mentioned forming portion.

2. In paragraph 1, The above bending part A first extension portion extending forward from the support portion toward the front plate; A second extension portion that is bent and extended from the first extension portion toward the inlet; A garment treatment device characterized by including a third extension portion extending rearward from the second extension portion toward the forming portion.

3. In paragraph 2, A clothing treatment device characterized in that the terminal of the first extension part is positioned forward of the forming part.

4. In paragraph 2, A clothing treatment device characterized in that the second extension part is positioned 1 mm to 3 mm in front of the forming part.

5. In paragraph 2, The above support part A first flat portion extending from the above-mentioned joint and having a cylindrical shape having a first diameter; A second flat portion extending from the first flat portion and having a cylindrical shape having a second diameter; A clothing treatment device characterized in that the first diameter and the second diameter are different.

6. In paragraph 5, A clothing treatment device characterized in that the first diameter is larger than the second diameter.

7. In paragraph 6, A clothing treatment device characterized in that the first diameter is 4 mm to 6 mm larger than the second diameter.

8. In paragraph 6, A garment treatment device characterized in that the second flat portion is supported by contact with the support wheel.

9. In paragraph 5, A garment treatment device characterized in that the above-mentioned coupling part includes a coupling groove in which the front of the drum body is received and coupled.

10. In paragraph 9, The above-mentioned joining home A garment treatment device characterized in that one end of the connecting portion that connects to the front of the drum body is formed by bending to surround the front of the drum body.

11. In paragraph 10, A garment treatment device characterized in that it further includes a bending portion that extends and bends toward the front plate from the end of the forming portion.

12. In paragraph 11, A garment treatment device characterized in that the front part of the drum is provided with a welding line formed by welding a metal plate.

13. In paragraph 12, A garment treatment device characterized in that the welding line is arranged to extend from the joining portion to the forming portion.

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