Clothes treatment apparatus and method for manufacturing drum of same

Abstract

This clothes treatment apparatus comprises: a cabinet that has an inlet formed in the front surface; a drum including a drum front that forms a drum opening, a drum back that is located behind the drum front and faces the drum front, and a cylindrical drum body connecting the drum front and the drum back; and a drive device provided to rotate the drum. At least one of the drum body, the drum front, or the drum back includes a vibration-damping steel sheet that includes a first steel sheet, a second steel sheet, and viscoelastic resin provided between the first steel sheet and the second steel sheet.

Description

Garment treatment device and method for manufacturing drum of garment treatment device

[0001] The present disclosure relates to a garment treatment device and a method for manufacturing a drum of the garment treatment device.

[0002] A garment processing device refers to a device that washes or dries laundry. Garment processing devices include washing machines, dryers, and combined washing and drying machines.

[0003] A washing machine is a device that washes clothes or bedding using moisture, while a dryer is a device that removes moisture from clothes or bedding and dries them. A clothes treatment device may include a drum inside. The drum may form a washing or drying chamber within the cabinet.

[0004] As the drum rotates, clothes can be washed or dried inside the washing or drying room. As the drum rotates, the lift rotates, moves, and drops the clothes stored inside, increasing the efficiency of the washing and drying process. When placing a garment treatment device indoors, noise and vibration can cause discomfort.

[0005] As the drum rotates, depending on the type of clothing, noise may be generated when the clothing collides with the drum. Reducing this impact noise, which occurs not only on the perimeter of the drum but also on all surfaces within the drum, can improve user convenience.

[0006] One aspect of the present disclosure provides a garment treatment device that reduces noise.

[0007] One aspect of the present disclosure provides a garment processing device having enhanced fastening strength between drum components.

[0008] One aspect of the present disclosure provides a garment treatment device with improved durability.

[0009] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0010] In order to solve the above problem, a garment treatment device according to the idea of ​​the present disclosure includes a drum including a cabinet having an inlet at the front, a drum front forming a drum opening, a drum bag disposed at the rear of the drum front and facing the drum front, and a cylindrical drum body connecting the drum front and the drum bag, and a driving motor provided to rotate the drum, wherein the drum body and at least one of the drum front and the drum bag include a first steel plate, a second steel plate, and a vibration-damping steel plate including a viscoelastic resin provided between the first steel plate and the second steel plate.

[0011] A garment treatment device according to the invention comprises a drum including a cabinet having an inlet at the front, a drum front forming a drum opening, a drum back disposed at the rear of the drum front and facing the drum front, and a cylindrical drum body connecting the drum front and the drum back, and a driving device arranged to rotate the drum, wherein the drum front, the drum body, and the drum back include a first steel plate, a second steel plate having the same material as the first steel plate, and a vibration-damping steel plate including a viscoelastic resin provided between the first steel plate and the second steel plate, wherein the viscoelastic resin has a thickness of 40 µm or more and 100 µm or less.

[0012] A method for manufacturing a drum of a clothing treatment device according to the invention includes rolling a damping steel plate into a cylindrical shape, connecting a first end and a second end of the cylindrical damping steel plate by seaming to form a drum body, forming a drum front and a drum back with the damping steel plate, connecting the drum front and the front end of the drum body by seaming, and connecting the drum back and the rear end of the drum body by seaming.

[0013] According to the present disclosure, since a vibration-damping steel plate is applied not only to the drum body but also to the drum front or drum back, or to both the drum front and drum back, noise generated when laundry collides with the drum of a clothes treatment device can be reduced.

[0014] According to the present disclosure, since a damping steel plate is applied to all of the drum front, the drum body, and the drum back, and the damping steel plate includes a viscoelastic resin of an appropriate thickness, noise and vibration generated when laundry collides with the drum can be reduced, and the durability of the drum can be improved.

[0015] According to the present disclosure, a drum body, a drum front, and a drum back are formed with a vibration-damping steel plate and each component is connected by seaming, so that noise and vibration generated when laundry collides with the drum can be reduced and the fastening force between the components of the drum can be strengthened.

[0016] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0017] FIG. 1 is a drawing illustrating a garment treatment device according to one embodiment of the present disclosure.

[0018] FIG. 2 is a cross-sectional view of a garment treatment device according to one embodiment of the present disclosure.

[0019] FIG. 3 is a drawing illustrating a garment treatment device according to one embodiment of the present disclosure.

[0020] FIG. 4 is a cross-sectional view of a garment treatment device according to one embodiment of the present disclosure.

[0021] FIG. 5 is an exploded perspective view of a drum of a garment treatment device according to one embodiment of the present disclosure.

[0022] FIG. 6 is a cross-sectional view of a vibration-reducing steel plate applied to a drum of a garment treatment device according to one embodiment of the present disclosure.

[0023] FIG. 7 is a perspective view of a drum of a garment treatment device according to one embodiment of the present disclosure.

[0024] Fig. 8 is a cross-sectional view taken along line A-A' of Fig. 7.

[0025] Fig. 9 is a cross-sectional view taken along line B-B' of Fig. 7.

[0026] It should be understood that the various embodiments and terms used in this document are not intended to limit the technical features described in this document to specific embodiments, but rather to include various modifications, equivalents, or substitutes of the embodiments.

[0027] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0028] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0029] In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof.

[0030] The term “and / or” includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0031] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0032] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0033] The terms “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0034] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0035] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0036] *Washing machines according to various embodiments can perform washing, rinsing, spin-drying, and drying processes. A washing machine is an example of a clothing treatment device, and the term "clothing treatment device" encompasses devices that wash clothing (laundry items, laundry), devices that dry clothing, and devices that can perform both washing and drying of clothing.

[0037] Washing machines according to various embodiments may include top-loading washing machines in which the laundry inlet for loading or removing laundry is provided facing upward, or front-loading washing machines in which the laundry inlet is provided facing forward. Washing machines according to various embodiments may include washing machines of other loading methods other than top-loading washing machines and front-loading washing machines.

[0038] In the case of a top-loading washing machine, laundry can be washed using a water current generated by a rotating body such as a pulsator. In the case of a front-loading washing machine, laundry can be washed by rotating the drum to repeatedly raise and lower the laundry. The front-loading washing machine may include a washing machine with a dryer that can dry the laundry contained inside the drum. The washing machine with a dryer may include a hot air supply device for supplying high-temperature air into the drum and a condensing device for removing moisture from the air discharged from the drum. For example, the washing machine with a dryer may include a heat pump device. The washing machine according to various embodiments may include a washing machine with a washing method other than the washing method described above.

[0039] Washing machines according to various embodiments may include a housing that accommodates various components therein. The housing may be provided in the form of a box with a laundry inlet formed on one side.

[0040] A washing machine may include a door for opening and closing the laundry compartment. The door may be rotatably mounted to the housing by a hinge. At least a portion of the door may be transparent or translucent to allow the interior of the housing to be viewed.

[0041] A washing machine may include a tub provided within a housing to store water. The tub may be provided in a generally cylindrical shape with a tub opening formed on one side, and may be positioned within the housing such that the tub opening corresponds to a laundry inlet.

[0042] The tub may be connected to the housing by a damper. The damper can absorb vibrations generated when the drum rotates, thereby reducing the vibrations transmitted to the housing.

[0043] A washing machine may include a drum configured to accommodate laundry.

[0044] The drum may be positioned within the tub such that the drum opening provided on one side corresponds to the laundry inlet and the tub opening. Laundry may be sequentially passed through the laundry inlet, the tub opening, and the drum opening to be accommodated within the drum or taken out from the drum.

[0045] The drum rotates within the tub and can perform each of the washing, rinsing, and / or dehydration operations. The cylindrical wall of the drum is formed with a number of perforations, allowing water stored in the tub to flow into or out of the drum.

[0046] A washing machine may include a drive device configured to rotate a drum. The drive device may include a drive motor and a rotating shaft for transmitting driving force generated by the drive motor to the drum. The rotating shaft may be connected to the drum by penetrating the tub.

[0047] The driving device can rotate the drum forward or backward to perform each operation according to the washing, rinsing, and / or dehydration, or drying cycle.

[0048] A washing machine may include a water supply device configured to supply water to a tub. The water supply device may include a water supply pipe and a water supply valve provided on the water supply pipe. The water supply pipe may be connected to an external water source. The water supply pipe may extend from the external water source to a detergent supply device and / or the tub. Water may be supplied to the tub via the detergent supply device. Water may be supplied to the tub without passing through the detergent supply device.

[0049] The water supply valve can open or close the water supply pipe in response to an electrical signal from the control unit. The water supply valve can allow or block the supply of water to the tub from an external water source. The water supply valve may include, for example, a solenoid valve that opens and closes in response to an electrical signal.

[0050] A washing machine may include a detergent supply device configured to supply detergent to a tub. The detergent supply device may include a manual detergent supply device that requires a user to add detergent for each wash cycle, and an automatic detergent supply device that stores a large amount of detergent and automatically supplies a predetermined amount of detergent during a wash cycle. The detergent supply device may include a detergent compartment for storing detergent. The detergent supply device may be configured to supply detergent into the tub during a water supply process. Water supplied through a water supply pipe may be mixed with detergent via the detergent supply device. The water mixed with detergent may be supplied into the tub. Detergent is used as a comprehensive term for pre-wash detergent, main wash detergent, fabric softener, bleach, etc., and the detergent compartment may be divided into a pre-wash detergent storage area, a main wash detergent storage area, a fabric softener storage area, and a bleach storage area.

[0051] A washing machine may include a drainage device configured to discharge water contained in a tub to the outside. The drainage device may include a drain pipe extending from the bottom of the tub to the outside of the housing, a drain valve provided in the drain pipe to open and close the drain pipe, and a pump provided on the drain pipe. The pump may pump water in the drain pipe to the outside of the housing.

[0052] The washing machine may include a control panel positioned on one side of the housing. The control panel may provide a user interface for a user to interact with the washing machine. The user interface may include at least one input interface and at least one output interface.

[0053] At least one input interface can convert sensory information received from a user into an electrical signal.

[0054] At least one input interface may include a power button, an operation button, a course selection dial (or a course selection button), and a wash / rinse / spin setting button. The at least one input interface may include, for example, a tact switch, a push switch, a slide switch, a toggle switch, a micro switch, a touch switch, a touch pad, a touch screen, a jog dial, and / or a microphone.

[0055] At least one output interface can visually or audibly convey information related to the operation of the washing machine to the user.

[0056] For example, at least one output interface may transmit information related to the washing cycle and operating time of the washing machine, as well as washing / rinsing / spin settings to the user. Information related to the operation of the washing machine may be output via a screen, indicator, voice, etc. At least one output interface may include, for example, a liquid crystal display (LCD) panel, a light emitting diode (LED) panel, a speaker, etc.

[0057] The washing machine may include a communication module for communicating with external devices via wires and / or wirelessly.

[0058] The communication module may include at least one of a short-range communication module or a long-range communication module.

[0059] The communication module can transmit data to or receive data from external devices (e.g., a server, a user device, and / or a home appliance). For example, the communication module can establish communication with a server, a user device, and / or a home appliance, and transmit and receive various data.

[0060] To this end, the communication module may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between external devices, and the performance of communication through the established communication channel. According to one embodiment, the communication module may include a wireless communication module (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (e.g., a local area network (LAN) communication module, or a power line communication module). Any of these communication modules may communicate with the external device via a first network (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules may be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips).

[0061] The short-range wireless communication module may include, but is not limited to, a Bluetooth communication module, a BLE (Bluetooth Low Energy) communication module, a near field communication module, a WLAN (Wi-Fi) communication module, a Zigbee communication module, an infrared (IrDA, infrared Data Association) communication module, a WFD (Wi-Fi Direct) communication module, an UWB (ultrawideband) communication module, an Ant+ communication module, a microwave (uWave) communication module, etc.

[0062] The long-distance communication module may include a communication module that performs various types of long-distance communication and may include a mobile communication unit. The mobile communication unit transmits and receives wireless signals with at least one of a base station, an external terminal, and a server on a mobile communication network.

[0063] In one embodiment, the communication module can communicate with external devices such as a server, a user device, and other home appliances through a peripheral access point (AP). The access point (AP) can connect a local area network (LAN) to which the washing machine or the user device is connected to a wide area network (WAN) to which the server is connected. The washing machine or the user device can be connected to the server through the wide area network (WAN). The control unit can control various components of the washing machine, such as a drive motor and a water inlet valve. The control unit can control various components of the washing machine to perform at least one cycle, including water supply, washing, rinsing, and / or spin-drying, according to a user input. For example, the control unit can control the drive motor to adjust the rotation speed of the drum, or control the water inlet valve of the water supply device to supply water to the tub.

[0064] The control unit may include hardware such as a CPU or memory, and software such as a control program. For example, the control unit may include an algorithm for controlling the operation of components within the washing machine, at least one memory storing program-type data, and at least one processor performing the aforementioned operation using data stored in the at least one memory. The memory and the processor may each be implemented as separate chips. The processor may include one or more processor chips or one or more processing cores. The memory may include one or more memory chips or one or more memory blocks. Additionally, the memory and the processor may be implemented as a single chip.

[0065] Hereinafter, one embodiment is described in detail with reference to the attached drawings.

[0066] FIG. 1 is a perspective view illustrating a garment treatment device (1) according to one embodiment of the present disclosure, and FIG. 2 is a cross-sectional view of a garment treatment device (1) according to one embodiment of the present disclosure.

[0067] The clothing treatment device (1) depicted in FIGS. 1 and 2 may be, specifically, a washing machine (1a). Referring to FIGS. 1 and 2, the washing machine (1a) may include a cabinet (11) that accommodates various components therein. The cabinet (11) may be provided in the form of a box with an inlet (12) formed on one side.

[0068] The washing machine (1a) may include a front frame (11a) forming the front. An inlet (12) may be formed on the front frame (11a). The washing machine (1a) may include a door (13) for opening and closing the inlet (12). The door (13) may be rotatably mounted on the cabinet (11) by a hinge. At least a portion of the door (13) may include a transparent or translucent portion to allow the interior to be viewed.

[0069] The washing machine (1a) may include a tub (20) provided inside the cabinet (11) to store water. The tub (20) is provided in a roughly cylindrical shape with a tub opening (22) formed on one side, and may be placed inside the cabinet (11) so that the tub opening (22) corresponds to the inlet (12).

[0070] The tub (20) can be connected to the cabinet (11) by a damper (29). The damper (29) can absorb vibrations generated when the drum (100a) rotates and attenuate vibrations transmitted to the cabinet (11).

[0071] The washing machine (1a) may include a drum (100a) provided to accommodate laundry.

[0072] The drum (100a) can be placed inside the tub (20) so that the drum opening (111a) provided on one side corresponds to the inlet (12) and the tub opening (22). Laundry can be accommodated inside the drum (100a) or taken out from the drum (100a) by passing through the inlet (12), the tub opening (22) and the drum opening (111a) in sequence.

[0073] The drum (100a) may include a drum body (130a) having openings formed at the front and rear, a drum front (110a) positioned at the front of the drum body (130a), and a drum back (120a) positioned at the rear of the drum body (130a).

[0074] The drum front (110a) may include a drum opening (111a) provided for introducing or withdrawing laundry. At least one lifter (35) may be installed on the inner surface of the drum (100a) to enable the laundry to rise and fall when the drum (100a) rotates.

[0075] The washing machine (1a) may include a driving device (40) configured to rotate a drum (100a). The driving device (40) may include a driving motor and a rotating shaft for transmitting driving force generated by the driving motor to the drum (100a). The rotating shaft may pass through the tub (20) and be connected to the drum (100a).

[0076] FIG. 3 is a perspective view illustrating a garment treatment device (1) according to one embodiment of the present disclosure, and FIG. 4 is a cross-sectional view of a garment treatment device (1) according to one embodiment of the present disclosure.

[0077] The clothing treatment device (1) depicted in FIGS. 3 and 4 may be specifically a dryer (1b). The dryer (1b) may include a cabinet (61) that accommodates various components therein. The cabinet (61) may be provided in the form of a box with an inlet (62) formed on one side.

[0078] The dryer (1b) may include a front frame (61a) forming the front. An inlet (62) may be formed in the front frame (61a). The dryer (1b) may include a door (63) for opening and closing the inlet (62). The door (63) may be rotatably mounted to the cabinet (61) by a hinge. At least a portion of the door (63) may include a transparent or translucent portion to allow the interior to be viewed.

[0079] The dryer (1b) may include a drum (100b) provided to accommodate laundry, and may include a drum opening (111b) provided to allow laundry to be loaded. The drum (100b) may be placed inside a cabinet (61) such that the drum opening (111b) provided on one side corresponds to an inlet (62). Laundry may pass through the inlet (62) and the drum opening (111b) in sequence to be loaded into the drum (100b) or taken out from the drum (100b). The drum (100b) may be rotatably provided inside the cabinet (61).

[0080] The drum (100b) may include a drum body (130b) having openings formed at the front and rear, a drum front (110b) positioned at the front of the drum body (130b), and a drum back (120b) positioned at the rear of the drum body (130b).

[0081] The dryer (1b) may include a driving device (90) configured to rotate a drum (100b). The driving device (90) may include a driving motor and a rotating shaft for transmitting driving force generated by the driving motor to the drum (100b).

[0082] The drum (100b) may include a discharge hole (121) through which air is introduced into the interior of the drum (100b). The air inside the drum (100b) may be discharged to the outside of the drum (100b) through the drum opening (111b). The discharge hole (121) may be located on the opposite side of the drum (100b) from the side where the drum opening (111b) is located. For example, the discharge hole (121) may be located at the rear of the drum (100b), and the drum opening (111b) may be located at the front of the drum (100b).

[0083] At least one lifter (85) may be provided inside the drum (100b). The lifter (85) can raise and lower an object so that the object comes into contact with hot air while floating in the space inside the drum (100b).

[0084] A heat pump for heating and condensing air may be provided inside the cabinet (61). An evaporator, a condenser, a compressor, an expansion device, etc., which constitute the heat pump, may be arranged at the bottom of the drum (100b).

[0085] In drying mode, a closed path may be formed inside the cabinet (61) of the dryer (1b). Here, the closed path may be an air movement path (see arrows in Fig. 4) that allows air inside the cabinet (61) to circulate through the heat pump and drum (100b).

[0086] FIG. 5 is an exploded perspective view of a drum (100) of a garment treatment device (1) according to one embodiment of the present disclosure.

[0087] The drum (100) described below can be applied to both the drum (100a) of FIGS. 1 and 2 and the drum (100b) of FIGS. 3 and 4.

[0088] The drum (100) may include a drum body (130) having a cylindrical shape, a drum back (120) provided at the rear of the drum body (130), and a drum front (110) provided at the front of the drum body (130).

[0089] The drum body (130) may have a cylindrical shape. The drum body (130) may be provided with open front and rear sides to form a hollow space (132). Before the drum body (130) is combined with the drum front (110) and the drum back (120), the drum body (130) may be formed into a cylindrical shape in which the hollow space (132) is formed.

[0090] The drum body (130) may include a drum inner surface (133) and a drum outer surface (134). The drum inner surface (133) and the drum outer surface (134) may extend along the circumferential direction of the drum (100).

[0091] The drum body (130) may be plate-shaped before being manufactured into a cylindrical shape. The drum body (130) may be formed by rolling a plate having a roughly rectangular shape into a cylindrical shape and joining the two ends of the plates bent in opposite directions by seaming.

[0092] Specifically, the first end (not shown) of the plate can be joined through a groove seaming process in which a second end (not shown) bent in the direction of one side of the plate, opposite to the first end, is inserted into a groove created while bending the first end (not shown) and pressed to join. However, the joining method is not limited thereto.

[0093] When the two ends of the plates are connected by seaming to form a drum body (130), the two ends of the plates are connected and the plates are stacked and laminated to form a structure thicker than the thickness of the plates.

[0094] A connection (150) with enhanced fastening strength can be formed by pressing laminated plates connected by groove seaming in an intersecting direction at a predetermined interval. (See Fig. 9)

[0095] FIG. 6 is a cross-sectional view of a vibration-reducing steel plate (140) applied to a drum (100) of a garment treatment device (1) according to one embodiment of the present disclosure.

[0096] When the clothing treatment device (1) is operated indoors, the user may feel uncomfortable due to noise and vibration generated when laundry collides with the drum (100).

[0097] To solve these problems, a damping steel plate (140) may be applied to the drum front (110), drum body (130), and drum back (120), which are components of the drum (100) that the laundry directly collides with. However, the damping steel plate (140) does not necessarily have to be applied to all components of the drum (100). For example, the damping steel plate (140) may be applied to the drum body (130), and the damping steel plate (140) may be applied to only one of the drum front (110) or the drum back (120).

[0098] The damping steel plate (140) applied to the drum (100) of the clothing treatment device (1) may be a constrained damping steel plate (140) made in a sandwich shape by sandwiching a viscoelastic resin (143) between a first steel plate (141) and a second steel plate (142). The damping steel plate (140) can convert vibration energy into thermal energy when external forces such as noise and vibration are applied to the damping steel plate (140). However, the present disclosure is not limited thereto.

[0099] The first steel plate (141) and the second steel plate (142) may include a stainless steel material. Specifically, they may include SUS430 and SUS430RE. When the driving device (40, 90) is located further rearward than the center of the drum (100), a high load may be applied to the drum front (110). Therefore, a material having a higher strength than the drum body (130) or the drum back (120) may be used for the drum front (110). However, the present disclosure is not necessarily limited thereto, and the steel plates (141, 142) of the drum front (110), the drum body (130), and the drum back (120) do not necessarily need to be formed of the same material.

[0100] The first steel plate (141) can form the inner surface of the drum (133). The inner surface of the drum (133) can form a space in which laundry is accommodated.

[0101] The second steel plate (142) can form the drum outer surface (134). The drum outer surface (134) can be formed outside the drum inner surface (133).

[0102] The viscoelastic resin (143) may be provided to reduce vibration transmitted to the drum (100) and may be provided to improve the damping force of the drum (100).

[0103] The viscoelastic resin (143) may include an acrylic-based viscoelastic resin (143). Specifically, it may include an acrylic copolymer-based viscoelastic resin (143) having damping properties and adhesive properties. However, the present disclosure is not limited thereto.

[0104] A viscoelastic resin (143) can be placed between a first steel plate (141) and a second steel plate (142), and one surface (143a) of the viscoelastic resin (143) can be in contact with the first steel plate (141). The other surface (143b) of the viscoelastic resin (143) can be in contact with the second steel plate (142).

[0105] The first steel plate (141), the viscoelastic resin (143), and the second steel plate (142) can be sequentially laminated to form a vibration damping steel plate (140).

[0106] If the thickness (d3) of the viscoelastic resin (143) provided between the first steel plate (141) and the second steel plate (142) is excessively thick, the strength of the vibration damping steel plate (140) may be reduced, which may actually increase noise. In addition, if it is excessively thin, the vibration damping effect may be reduced. Therefore, the thickness (d3) of the viscoelastic resin (143) may be 40 μm or more and 100 μm or less. However, the thickness (d3) of the viscoelastic resin (143) is not necessarily limited thereto, and it is sufficient if it is formed so as to reduce noise and secure appropriate strength.

[0107] If the thickness (d1) of the first steel plate (141) and the thickness (d2) of the second steel plate (142) are excessively thick, difficulties may arise during the forming and seaming processes. In addition, if they are excessively thin, the strength of the vibration damping steel plate (140) may not be secured. Therefore, the thickness (d1) of the first steel plate (141) and the thickness (d2) of the second steel plate (142) may be 250 μm or more and 600 μm or less. However, the thicknesses (d1, d2) of the steel plates (141, 142) are not necessarily limited thereto, and it is sufficient if the appropriate strength of the vibration damping steel plate (140) can be secured and noise can be reduced to improve usability.

[0108] The thickness (d1) of the first steel plate (141) of the damping steel plate (140) and the thickness (d2) of the second steel plate (142) can be made the same. By making the thickness (d1) of the first steel plate (141) and the thickness (d2) of the second steel plate (142) the same, the manufacturing cost of the drum (100) using the damping steel plate (140) can be reduced.

[0109] In order to secure the damping performance of the drum (100), a damping material such as butyl rubber may be separately attached to the outer surface of the drum (100). However, although the damping performance is secured, the damping material may be difficult to attach or detach due to reasons such as melting due to heat, which may affect surrounding electrical components and cause them to malfunction.

[0110] To solve this problem, the components of the drum (100) itself can be formed of a damping steel plate (140) without attaching a separate damping material.

[0111] However, it is not necessary to form all components of the drum (100) with damping steel plates (140), and damping performance can be secured by forming only some components with damping steel plates (140) and attaching damping material to the remaining portions.

[0112] For example, the drum body (130) and the drum front (110) can be formed of a vibration-damping steel plate (140), and vibration-damping material can be attached to the attachable portion of the outer surface of the drum back (120) to secure vibration-damping performance.

[0113] FIG. 7 is a perspective view of a drum (100) of a garment treatment device (1) according to one embodiment of the present disclosure, and FIG. 8 is a cross-sectional view taken along line A-A' of FIG. 7.

[0114] The drum body (130) can be manufactured through a seaming process in which a plate-shaped damping steel plate (140) is rolled into a cylindrical shape and the first end and the second end, which are the two ends of the cylindrical damping steel plate (140), are bent in different directions and pressed.

[0115] The drum front (110) can be combined with a border formed at the front end of the drum body (130) in a seaming manner to form a first seaming portion (180), and the drum back (120) can be combined with a border formed at the rear end of the drum body (130) in a seaming manner to form a second seaming portion (190).

[0116] Referring to FIG. 8, specifically, the first seaming portion (180) may be formed by having the front end of the drum body (130) folded toward the outside of the drum (100) to form a groove and the end of the drum front (110) folded toward the inside of the drum (100) to be inserted into the groove. The second seaming portion (190) may be formed by having the rear end of the drum body (130) folded toward the outside of the drum (100) to form a groove and the end of the drum back (120) folded toward the inside of the drum (100) to be inserted into the groove.

[0117] However, the present disclosure is not limited to the coupling method, and any coupling method that can be firmly coupled so that the clothing treatment device (1) can operate smoothly is sufficient.

[0118] Fig. 9 is a cross-sectional view taken along line B-B' of Fig. 7.

[0119] The drum body (130) may be formed to include a connecting portion (150) which is a structure in which protrusions (160) and recesses (170) are repeatedly formed in the axial direction of the drum body (130) by processing a structure in which plates are stacked and laminated to strengthen the fastening force of the drum body (130). In other words, the connecting portion (150) may be provided along the longitudinal direction of the drum body (130).

[0120] The protrusion (160) can be formed to protrude in a direction from the inner surface of the drum body (130) toward the outer surface, and the recessed portion (170) can be formed to protrude in a direction from the outer surface of the drum body (100) toward the inner surface.

[0121] The height between the most protruding portion of the protrusion (160) and the most recessed portion of the recessed portion (170), i.e., the height difference (h) between the protrusion (160) and the recessed portion (170), may be set to be approximately 1.0 mm or more and 3.0 mm or less. However, the present disclosure is not limited thereto.

[0122] A garment treatment device (1) according to one embodiment of the present disclosure comprises a drum (100) including a cabinet (11, 61) having an inlet (12, 62) at the front, a drum front (110) forming a drum opening (111), a drum back (120) disposed at the rear of the drum front (110) and facing the drum front (110), and a cylindrical drum body (130) connecting the drum front (110) and the drum back (120), and a driving device (40, 90) provided to rotate the drum (100), wherein at least one of the drum body (130) and the drum front (110) and the drum back (120) comprises a first steel plate (141), a second steel plate (142), and a viscoelastic resin (143) provided between the first steel plate (141) and the second steel plate (142). Includes steel plate (140).

[0123] One side (143a) of the above viscoelastic resin (143) may be provided to be bonded to the first steel plate (141), and the other side (143b) may be provided to be bonded to the second steel plate (142).

[0124] The thickness (d3) of the above viscoelastic resin (143) may be 40 ㎛ or more and 100 ㎛ or less.

[0125] The thickness (d1) of the first steel plate (141) and the thickness (d2) of the second steel plate (142) may be 250 ㎛ or more and 600 ㎛ or less.

[0126] The thickness (d1) of the first steel plate (141) and the thickness (d2) of the second steel plate (142) may be the same.

[0127] The above drum body (130) may include a connecting portion (150) in which the first end and the second end of the vibration-damping steel plate (140) are bent in opposite directions and connected by seaming.

[0128] The drum (100) may include a first seaming portion (180) connected to the front end of the drum body (130) by seaming so that the drum front (110) is coupled to the drum body (130), and a second seaming portion (190) connected to the rear end of the drum body (130) by seaming so that the drum back (120) is coupled to the drum body (130).

[0129] The above connecting portion (150) may include a shape in which protrusions (160) and recesses (170) are repeated in the axial direction of the drum body (130). According to the present disclosure, the fastening force of the connecting portion (150) of the drum body (130) can be strengthened.

[0130] The height difference (h) between the protrusion (160) and the recessed portion (170) may be 1 mm or more and 3 mm or less.

[0131] The ratio of the thickness (d3) of the viscoelastic resin (143) to the thickness (d1) of the first steel plate (141) may be 1 / 15 or more and 2 / 5 or less.

[0132] The above first steel plate (141) and the above second steel plate (142) can be formed of stainless steel material.

[0133] The first steel plate (141) and the second steel plate (142) of the drum body (130) may include SUS430 or SUS430RE.

[0134] The first steel plate (141) and the second steel plate (142) of the drum front (110) and the first steel plate (141) and the second steel plate (142) of the drum back (120) may include SUS430 or SUS430RE.

[0135] A garment treatment device (1) according to one embodiment of the present disclosure includes a cabinet (11, 61) having an inlet (12, 62) at the front, a drum front (110) forming a drum opening (111), a drum back (120) disposed at the rear of the drum front (110) and facing the drum front (110), and a drum body (130) having a cylindrical shape connecting the drum front (110) and the drum back (120), and a driving device (40, 90) provided to rotate the drum (100), wherein the drum front (110), the drum body (130), and the drum back (120) include a first steel plate (141), a second steel plate (142) having the same material as the first steel plate (141), and a viscoelastic material provided between the first steel plate (141) and the second steel plate (142). It includes a vibration-damping steel plate (140) including a resin (143), and the thickness (d3) of the viscoelastic resin (143) may be 40 ㎛ or more and 100 ㎛ or less.

[0136] The thickness (d1) of the first steel plate (141) and the thickness (d2) of the second steel plate (142) may be 250 µm or more and 600 µm or less.

[0137] The above drum body (130) may include a connecting portion (150) in which the first end and the second end of the vibration-damping steel plate (140) are bent in opposite directions and connected by seaming.

[0138] The connection between the front end of the drum front (110) and the front end of the drum body (130) and the connection between the rear end of the drum back (120) and the drum body (130) can be connected by seaming.

[0139] The above first steel plate (141) and the above second steel plate (142) can be formed of stainless steel material.

[0140] A method for manufacturing a drum (100) of a clothing treatment device (1) according to one embodiment of the present disclosure may include rolling a damping steel plate (140) into a cylindrical shape, connecting a first end and a second end of the cylindrical damping steel plate (140) by seaming to form a drum body (130), forming a drum front (110) and a drum back (120) with the damping steel plate (140), connecting the drum front (110) and the front end of the drum body (130) by seaming, and connecting the drum back (120) and the rear end of the drum body (130) by seaming.

[0141] The above illustrates and describes specific embodiments. However, the invention is not limited to the above-described embodiments, and those skilled in the art will readily appreciate that various modifications and implementations can be made without departing from the spirit and scope of the invention as set forth in the claims below.

Claims

1. Cabinet with an inlet on the front; A drum including a drum front forming a drum opening, a drum back positioned at the rear of the drum front and facing the drum front, and a cylindrical drum body connecting the drum front and the drum back; and Including a driving device arranged to rotate the above drum, A garment treatment device comprising: the drum body; and at least one of the drum front and the drum back, the damping steel plate including a first steel plate, a second steel plate, and a viscoelastic resin provided between the first steel plate and the second steel plate.

2. In paragraph 1, A clothing treatment device in which one side of the viscoelastic resin is bonded to the first steel plate, and the other side is bonded to the second steel plate.

3. In paragraph 2, A clothing treatment device wherein the thickness of the above viscoelastic resin is 40㎛ or more and 100㎛ or less.

4. In paragraph 3, A clothing treatment device wherein the thickness of the first steel plate and the thickness of the second steel plate are 250 ㎛ or more and 600 ㎛ or less.

5. In paragraph 2, A clothing treatment device in which the thickness of the first steel plate and the thickness of the second steel plate are the same.

6. In paragraph 4, A garment treatment device in which the drum body includes a connecting portion in which the first end and the second end of the vibration-reducing steel plate are bent in opposite directions and connected by seaming.

7. In paragraph 4, The above drum, A garment treatment device including a first seaming portion connected to a front end of the drum body by seaming so that the drum front is connected to the drum body, and a second seaming portion connected to a rear end of the drum body by seaming so that the drum back is connected to the drum body.

8. In paragraph 6, A garment treatment device in which the above connecting portion includes a shape in which protrusions and depressions are repeated in the axial direction of the drum body.

9. In paragraph 8, A clothing treatment device wherein the height difference between the protrusion and the recess is 1 mm or more and 3 mm or less.

10. In paragraph 5, A clothing treatment device wherein the ratio of the thickness of the viscoelastic resin to the thickness of the first steel plate is 1 / 15 or more and 2 / 5 or less.

11. In paragraph 2, A clothing treatment device wherein the first steel plate and the second steel plate are formed of stainless steel material.

12. In paragraph 11, A clothing treatment device in which the first and second steel plates of the drum body include SUS430 or SUS430RE.

13. In paragraph 12, A garment treatment device wherein the first steel plate and the second steel plate of the drum front and the first steel plate and the second steel plate of the drum back comprise SUS430 or SUS430RE.

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