Door for home appliance

Abstract

The present invention relates to a door (100) for a home appliance. The present invention may include a door cover (170) coupled to a door frame (110) and surrounding the surface of the door frame (110). The door cover (170) may have cover bent portions (184, 187) bent to face the surface of the door frame (110). Support protrusions (134, 137) and support holes (194, 197) into which the support protrusions (134, 137) are inserted and caught may be formed on the surface of the door frame (110) and the cover bent portions (184, 187). Thus, through the coupling structure of the support protrusions (134, 137) and the support holes (194, 197), the door cover (170) including the cover bent portions (184, 187) may be prevented from being opened, thereby maintaining the shape thereof.

Description

Doors for home appliances

[0001] The present invention relates to a door for a home appliance.

[0002] Home appliances that accommodate objects within an internal space that can be opened and closed by doors, such as cooking appliances, refrigerators, and clothes washers, are widely used. These appliances include a storage space for accommodating objects within a cabinet that forms the exterior, and may be equipped with a door for opening and closing the storage space.

[0003] Recently, door exteriors are being made of metal to enhance their aesthetic appeal. Except for the central viewing area, the metal door cover covers the entire surface of the door, providing a unified aesthetic to the user.

[0004] To allow these metal door covers to wrap around the sides of the door, portions of the door cover are folded. The folded corners of the door cover can be joined together using processes such as welding to eliminate seams.

[0005] However, joining the corners of the door cover using a welding process increases the door's manufacturing time and cost. Furthermore, the joints of door covers connected by welding can vary in shape depending on the welding method and the worker's skill level, limiting the ability to provide consistent quality.

[0006] Instead of welding, door covers can be attached to the door frame using adhesives or adhesive tapes. However, adhesives and adhesive tapes have limitations, such as their ability to lose their adhesive strength over time. Furthermore, in cases where the door is exposed to high heat from the cooking area, such as when using a cooking appliance, the adhesive strength at the bonded area can weaken even more easily.

[0007] The present invention is intended to solve the problems of the prior art as described above, and the purpose of the present invention is to cover the exterior of a door with a folded cover, while preventing deformation of the folded portion through a hanging structure of the door frame.

[0008] Another object of the present invention is to minimize the gap between the joints connecting the plurality of bends formed on the door cover by fixing them respectively.

[0009] Another object of the present invention is to fix the bent parts by the hook structure of the door frame during the process of assembling the door cover to the door frame without any additional work.

[0010] According to a feature of the present invention for achieving the above-described object, the present invention may include a door cover coupled to a door frame and surrounding a surface of the door frame. The door cover may be provided with a cover bend portion bent to face the surface of the door frame. At this time, a support protrusion and a support hole into which the support protrusion is inserted and caught may be formed on the surface of the door frame and the cover bend portion. In this way, through the coupling structure of the support protrusion and the support hole, deformation of the door cover including the cover bend portion is prevented, and the door can maintain its original shape.

[0011] The door frame and the door cover may be laminated and joined to each other. The support protrusion may protrude from the surface of the door frame in the direction in which the door frame and the door cover are laminated. The support hole may penetrate the surface of the cover bending portion in the direction in which the door frame and the door cover are laminated.

[0012] The door frame may be provided with an extension board extending from an edge of the door frame to the outside of the door frame. The door bending portion may be in surface contact with the extension board. The support protrusion may protrude from the surface of the extension board.

[0013] The door frame may have a plurality of supporting protrusions protruding from it. The plurality of supporting protrusions may be inserted into each of the plurality of supporting holes.

[0014] The door frame may have a plurality of supporting protrusions protruding from it. The plurality of supporting protrusions may be provided on the same plane of the door frame.

[0015] The door frame may include a frame body surrounded by the door cover, and an extension board extending from an edge of the frame body. A deformation prevention member connecting the frame body and the extension board may have a joining space surrounded by three different surfaces. The cover bending portion may be in surface contact with the extension board in the joining space.

[0016] The door cover may include a front plate forming the front surface of the door, and a bending plate connected to the front plate and forming at least one of the upper surface, lower surface, or side surface of the door. The door cover may further include a cover bending portion that is bent at the bending plate to face the front plate and in which the support hole is formed.

[0017] The door frame may be provided with an extension board extending from an edge of the door frame to the outside of the door frame. The cover bending portion may be in surface contact with the extension board. The extension board may have a support protrusion protruding toward the front plate.

[0018] The above bending plate may include an upper plate constituting the upper surface of the door, a side plate constituting the side surface of the door, and a lower plate constituting the lower surface of the door.

[0019] The above cover bending portion may include an upper bending portion bent at the upper plate, a side bending portion bent at the side plate, and a lower bending portion bent at the lower plate.

[0020] The upper bending portion, the side bending portion, and the lower bending portion can form the same plane.

[0021] A joint extending along the joining direction of the door frame and the door cover may be formed at a corner where the edge of the upper plate and the edge of the side plate face each other.

[0022] Support holes may be formed in each of the upper bending portion, the side bending portion, and the lower bending portion.

[0023] The above support protrusion may include an inclined surface whose protrusion height decreases toward the edge of the door frame, and a hooking surface connected to one end of the inclined surface and fixing the support hole.

[0024] The above-mentioned engaging surface may be a planar structure having a greater inclination angle than the above-mentioned inclined surface with respect to the surface of the door frame.

[0025] The side of the door frame may be provided with a guide protrusion whose protrusion height increases along the direction of engagement with the door cover. One end of the side bend portion bent from the side of the door cover may pass over the guide protrusion and be seated at the rear of the guide protrusion.

[0026] One end of the cover bending portion is supported on the surface of the door frame, so that deformation of the cover bending portion can be limited.

[0027] The door frame may include a frame body surrounded by the door cover, and an extension board extending from an edge of the frame body. A guide protrusion may be provided on a surface of the frame body in a direction perpendicular to a direction in which the door cover is assembled to the door frame. During the assembly process of the door cover and the door frame, one end of the cover bending portion facing the surface of the frame body may pass over the guide protrusion and be positioned behind the guide protrusion.

[0028] A frame contact surface may be formed on the surface of the door frame facing the door cover. A cover contact surface facing the frame contact surface may be formed on the surface of the door cover facing the door frame. The frame contact surface and the cover contact surface may be adhered to each other.

[0029] Based on the joining direction of the door frame and the door cover, the cover contact surface may be positioned forward of the support hole.

[0030] The above door cover may include a first cover portion extending in the left-right direction and a second cover portion extending in the up-down direction from each end of the first cover portion.

[0031] The above support hole may be formed at a connecting portion where one end of the first cover part and one end of the second cover part are connected to each other, and at the other end of the second cover part.

[0032] The door for home appliances according to the present invention as discussed above has the following effects.

[0033] In the present invention, when the door frame and door cover constituting the door are assembled together, the folded portion of the door cover can be supported by being hooked onto the door frame. When the folded portion of the cover is supported by the door frame, deformation of the door cover, including the folded portion of the cover, is prevented, and the door cover can maintain its original shape. Since the door cover can maintain its folded shape through the hooking structure with the door frame, a separate welding process can be omitted. Consequently, the manufacturing cost of the door can be reduced, and the manufacturing speed of the door can be accelerated.

[0034] In addition, in the present invention, the door frame may have multiple catches to support the door cover in multiple directions. Accordingly, the spring-back phenomenon at the corners of the door cover can be prevented, and the corners have a seamless structure, thereby enhancing the aesthetic appeal and manufacturing quality of the door.

[0035] Additionally, in the present invention, the bending portions of the door cover can be prevented from opening by being caught by independent supporting protrusions. Accordingly, the gap between the joints connecting the multiple bending plates can be minimized, and foreign substances can be prevented from entering the door through the joints.

[0036] Furthermore, in the present invention, the support protrusions and support holes that support the folded portion of the door cover can be formed in the direction in which the door cover and the door frame are assembled. Accordingly, when the door cover is assembled to the door frame, the support protrusions can be naturally inserted into the support holes, eliminating the need for the worker to perform separate assembly work to prevent the folded portion from opening. Consequently, the door assembly performance can be improved.

[0037] In addition, if the support protrusions and support holes are formed in the direction in which the door cover and the door frame are assembled, interference between the parts due to the support protrusions or support holes can be prevented when the door cover and the door frame are assembled. This can improve the assembly performance of the door.

[0038] Additionally, in the present invention, a guide protrusion may be formed on the surface of the door frame. During assembly, one end of the door cover's folded portion may pass over the guide protrusion and settle behind it. This prevents the entire door cover from being separated in the opposite direction of assembly. This enhances the door's durability.

[0039] Additionally, the support protrusion of the present invention may be formed with a sloped surface. The sloped surface is formed so that its height decreases toward the outside of the door frame. When restoring a bent portion that has been accidentally opened, this sloped surface allows one end of the bent portion to easily slide over it. Therefore, the door's maintainability can also be improved.

[0040] In addition, in the present invention, a joint space is formed at the joint portion of the door frame, and the joint space can be surrounded by three different surfaces. The door cover, which is secured in the joint space surrounded by these three different surfaces, can make surface contact with the door frame from various directions. Accordingly, as the contact area between the door frame and the door cover increases and the support directions become more diverse, the joint state between the door frame and the door cover can be firmly maintained.

[0041] In addition, since the support protrusions and support holes are assembled together during the process of joining the door cover and the door frame, the support protrusions and support holes can align the assembly direction between the door cover and the door frame before they are completely joined. Accordingly, the support protrusions and support holes enable precise assembly between the door cover and the door frame.

[0042] Furthermore, in the present invention, one end of the cover bend portion is supported by the surface of the door frame, thereby limiting deformation of the cover bend portion and the door cover. That is, even if an external force is applied to the surface of the door cover, the cover bend portion is supported by contact with the surface of the door frame, thereby preventing deformation of the door cover. This improves the durability of the door, and also prevents deterioration of the aesthetics due to door deformation.

[0043] Fig. 1 is a perspective view showing a cooking appliance to which an example of a door for a home appliance according to the present invention is applied.

[0044] Figure 2 is a perspective view showing an embodiment of the present invention.

[0045] Figure 3 is a perspective view showing the components constituting one embodiment of the present invention in an exploded manner.

[0046] Fig. 4 is a perspective view showing a door frame and a door cover combined among the components constituting one embodiment of the present invention.

[0047] Fig. 5 is a perspective view showing the upper joint portion among the joint portions of the door frame and the door cover constituting one embodiment of the present invention.

[0048] Fig. 6 is a perspective view showing the lower joint portion among the joint portions of the door frame and the door cover constituting one embodiment of the present invention.

[0049] Fig. 7 is a perspective view showing the door frame and door cover, among the components constituting one embodiment of the present invention, in an exploded view.

[0050] Fig. 8 is a perspective view showing the door frame and door cover, among the components constituting an embodiment of the present invention, disassembled and viewed from a different angle than Fig. 7.

[0051] Fig. 9 is an enlarged perspective view showing the structure of the upper joint of the door frame among the components constituting one embodiment of the present invention.

[0052] Fig. 10 is an enlarged perspective view showing the structure of the lower joint of the door frame among the components constituting one embodiment of the present invention.

[0053] Fig. 11 is an enlarged perspective view showing the structure of the upper joint of the door cover among the components constituting one embodiment of the present invention.

[0054] Fig. 12 is an enlarged perspective view showing the structure of the lower joint of the door cover among the components constituting one embodiment of the present invention.

[0055] Figures 13 and 14 are perspective views sequentially showing the process of assembling a door frame and a door cover constituting one embodiment of the present invention.

[0056] Fig. 14 is a perspective view showing the upper joint portion of a door frame and a door cover that constitute an embodiment of the present invention, when they are joined to each other.

[0057] Fig. 15 is a cross-sectional view taken along line XV-XV' of Fig. 5.

[0058] Fig. 16 is a cross-sectional view taken along line XVI-XVI' of Fig. 5.

[0059] Fig. 17 is a cross-sectional view taken along line XVII-XVII' of Fig. 5.

[0060] Fig. 18 is a perspective view showing the lower joint portion of a door frame and a door cover that constitute an embodiment of the present invention, when they are joined to each other.

[0061] Fig. 19 is a cross-sectional view taken along line XIX-XIX' of Fig. 6.

[0062] Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. When designating components in each drawing, it should be noted that, where possible, identical components will be given the same reference numerals, even if they appear in different drawings. Furthermore, when describing embodiments of the present invention, if a detailed description of a related known structure or function is deemed to hinder understanding of the embodiments of the present invention, such detailed description will be omitted.

[0063] The present invention relates to a home appliance and a door for the home appliance (hereinafter referred to as "door (100)"). Here, the home appliance may mean one having a storage space inside. The door (100) may be arranged in front of the storage space. Here, the front refers to a direction facing a user when the user is positioned in front of the home appliance. Referring to Fig. 1, the X-axis direction may be the front. The Y-axis direction may be the left-right width direction of the door (100). The Z-axis direction may be the vertical width direction, which is the height direction of the door (100). The following description will be made based on these directions.

[0064] The above-described door (100) for home appliances can be applied not only to doors (100) of home appliances such as cooking appliances, refrigerators, freezers, kimchi refrigerators, plant cultivation devices, clothes processors, washing machines, and dryers, but can also be applied to doors or entrance doors of furniture. The present invention can be applied to various home appliances equipped with one or more doors (100). Among these, cooking appliances can include sealed cooking appliances such as ovens and microwave ovens. Hereinafter, the application of the door (100) of the present invention to cooking appliances will be described as an example.

[0065] Referring to Fig. 1, the exterior of the cooking appliance is formed by an outer body (10). The outer body (10) may form the skeleton of the cooking appliance, excluding a door (100) disposed at the front. The outer body (10) may include a top cover (11), a front cover (12), and a side cover (13). A cover penetration hole (11a) may be formed in the top cover (11). Some heat-generating components may be exposed through the cover penetration hole (11a). The cover penetration hole (11a) may serve to prevent interference between some tall components and the top cover (11) in addition to the function of heat dissipation.

[0066] A control panel (18) is arranged at the front of the outer body (10). The control panel (18) may form the front of the cooking appliance together with the door (100). The control panel (18) may be arranged at the upper portion of the door (100). The control panel (18) is provided with a display unit (19) to display information of the cooking appliance. The display unit (19) may be configured as a touch panel and may be used by a user to operate the cooking appliance. In other words, the display unit (19) may be a type of operating unit. As another example, the display unit (19) may be omitted, and the control panel (18) may be provided with an input unit such as a dial, a switch, a mechanical or electronic button, etc. As another example, the control panel (18) may have a simple plate-like structure without a control function. Drawing reference numeral 14 shows a lower frame arranged at the lower portion of the door (100).

[0067] A door (100) may be provided at the front of the outer body (10). The door (100) may shield the cooking chamber. The door (100) may be operated in a pull-down manner in which the upper portion rotates up and down around the lower portion. As another example, the door (100) may be operated in a side-swing manner in which it opens sideways. In the present embodiment, the door (100) is configured as one, but as another example, the door (100) may be configured as an upper door (100) and a lower door (100).

[0068] Referring to Fig. 2, the structure of the door (100) is illustrated. As seen therein, the door (100) may include a handle (140). A front panel (230) that allows a view of the cooking chamber may be arranged below the handle (140). The front panel (230) may be made of a transparent material such as glass. A door cover (170) that wraps around the edge of the front panel (230) may occupy most of the exterior of the door (100) when viewed from the front. Reference numeral 173 indicates the front of the door cover (170), and the front surface (173) of the door cover (170) may be the front surface of the door (100).

[0069] The door cover (170) may have a structure that surrounds the front panel (230) with the front panel (230) positioned at the center. A cover penetration portion (172) is formed at the center of the door cover (170) to expose the front panel (230). A first cover portion (171) may be provided at the lower portion of the door cover (170) surrounding the cover penetration portion (172). A second cover portion (175) may be connected to both ends of the first cover portion (171). The first cover portion (171) and the second cover portion (175) may together form an approximately square frame shape. A single front plate (181) connected to each other may be configured at the front of the first cover portion (171) and the second cover portion (175). At this time, the support holes (194, 197, see FIGS. 11 and 12) to be described later may be formed at the connecting portion where one end of the first cover part (171) and one end of the second cover part (175) are connected to each other, and at the other end of the second cover part (175). The detailed structure of the door cover (170) will be described again below.

[0070] FIG. 3 illustrates an exploded view of components constituting an embodiment of the door (100). In this embodiment, the door (100) is provided with a plurality of door panels (210, 220, 230) for allowing the cooking chamber to pass through. A center panel (210) and a rear panel (220) may be laminated behind the front panel (230) described above. The center panel (210) and the rear panel (220) may also be made of a transparent material.

[0071] More precisely, the front panel (230) is arranged between the door frame (110) and the door cover (170) that constitute the door (100). The center panel (210) is arranged between the door frame (110) and the chalk frame (150). The rear panel (220) is arranged between the chalk frame (150) and the chalk cover (160). As another example, either or both of the center panel (210) and the rear panel (220) may be omitted. As another example, the front panel (230) may also be omitted, and the door (100) may be configured so as not to penetrate the cooking chamber.

[0072] The door (100) is provided with a door frame (110). The door frame (110) may have a substantially square frame shape. The door frame (110) may be made of an injection molded material. The door frame (110) may form the skeleton of the door (100). The door cover (170), the chalk frame (150), and the chalk cover (160) may be combined with the door frame (110).

[0073] A frame penetration portion (112) may be formed through the center of the frame body (111) that constitutes the skeleton of the door frame (110). The frame body (111) surrounding the frame penetration portion (112) may include structures for coupling with the door cover (170) and structures for coupling with the chalk frame (150) and the chalk cover (160). These structures will be described again below.

[0074] A first frame contact surface (113) may be formed on the surface of the door frame (110). The first frame contact surface (113) is formed on the front surface of the door frame (110) facing the door cover (170). An adhesive may be applied to the first frame contact surface (113) or an adhesive tape may be attached to the first frame contact surface (113) so as to be in surface contact with the surface of the door cover (170) and adhered to each other. As will be described below, the first frame contact surface (113) and the second frame contact surface (121) may be formed on the surface of the door frame (110) so as to be adhered to a cover contact surface (not given a reference numeral in the drawing) formed on the surface of the door cover (170).

[0075] In Fig. 3, reference numerals 117 and 177 represent fastening holes formed in the door frame (110) and fastening holes formed in the door cover (170), respectively, and a panel hole (237) is formed in a corresponding position in the front panel (230). When a fastening member (not shown) passes through the two fastening holes (117, 177) and the panel hole (237) and is fastened to a handle fastening portion (147) provided in the handle (140), the door frame (110), the door cover (170), the front panel (230), and the handle (140) can be connected.

[0076] The chalk frame (150) may be arranged at the rear of the door frame (110). The chalk frame (150) may have a chalk body (151) having a roughly square plate structure. The chalk frame (150) may prevent microwaves irradiated into the interior of the cooking chamber from leaking to the outside. To this end, a plurality of chalks (155) are provided on the edge of the chalk frame (150). A porous portion (152) corresponding to the front panel (230), the center panel (210), and the rear panel (220) is formed at the center of the chalk frame (150). The porous portion (152) may allow a user to observe the cooking chamber from the outside through the door (100).

[0077] A chalk cover (160) may be placed on the opposite side of the door frame (110) with the chalk frame (150) interposed therebetween. The chalk cover (160) is placed at the rear of the door frame (110) and forms the rear exterior of the door (100). The skeleton of the chalk cover (160) is formed by a square frame-shaped cover body (161). A central penetration portion (162) corresponding to the porous portion is formed at the center of the cover body (161).

[0078] As another example, the chalk frame (150) and the chalk cover (160) may be omitted. As another example, the chalk frame (150) may be made integrally with the door frame (110).

[0079] FIG. 4 illustrates a state in which the door frame (110) and the door cover (170) are combined. As can be seen, the door frame (110) and the door cover (170) can be combined to form a single rectangular frame. At this time, as previously described, the door frame (110) and the door cover (170) can be joined using a fastener, and furthermore, they can be bonded using an adhesive or adhesive tape.

[0080] Since the door cover (170) is made by bending a metal material, a spring-back phenomenon may occur at the bending portion. That is, the bending portion (184, 187) of the door cover (170) tends to return to its state before being bent. Alternatively, the bending portion may be deformed by heat. This phenomenon can be prevented by the door frame (110). In FIG. 4, deformation prevention portions (120, 120', 180, 180') that prevent deformation of the bending portions (184, 187) of the door cover (170) are shown at the four corners of the door frame (110) and the door cover (170). The structure of the deformation prevention portions (120, 120', 180, 180') will be examined in detail below.

[0081] Referring to Fig. 5, a portion corresponding to an upper corner among the corners of the door cover (170) and a portion corresponding to an upper corner among the corners of the door frame (110) are illustrated. Here, the corner refers to a portion where two adjacent bar-shaped sides of a square frame-shaped structure meet. Since a plurality of bending plates (183, 186) bent from a front plate (181) are provided at the corners of the door cover (170), deformation may occur at the corners of the door cover (170).

[0082] Looking more closely, as can be seen in the enlarged view of FIG. 5, the bending plates (183, 186) of the door cover (170) can be deformed in the direction of the arrow due to a spring back phenomenon or heat. More precisely, among the bending plates (183, 186) of the door cover (170), the side plate (183) that is bent from the front plate (181) to form the side surface of the door cover (170) can be deformed in the direction of arrow ①, and the upper plate (186) that is bent from the front plate (181) to form the upper surface of the door cover (170) can be deformed in the direction of arrow ②. These directions are opposite to the directions in which the side plate (183) and the upper plate (186) were bent while manufacturing the door cover (170).

[0083] At this time, a first joint (G1) may be formed at a corner where the edge of the upper plate (186) and the edge of the side plate (183) face each other among the bending plates (183, 186). The first joint (G1) extends along the joining direction of the door frame (110) and the door cover (170). At this time, when the side plate (183) and the upper plate (186) are deformed in the direction of the arrow, the width of the first joint (G1) may increase. In the present embodiment, the first upper deformation prevention part (120) and the second upper deformation prevention part (180), which will be described later, cooperate to prevent the first joint (G1) from widening, thereby maintaining a seamless shape.

[0084] In this embodiment, rounded portions (186B', 186B'') are provided at both corners of one end (186B) of the side plate (183) constituting the first joint (G1). The rounded portions (186B', 186B'') may be formed in a curved shape. Through this, the aesthetic appeal of the first joint (G1) portion can be enhanced, and sharp portions can be eliminated to enhance user safety. Although not indicated by a drawing symbol, the same rounded portions may also be formed at the corners of the upper plate (186).

[0085] Referring to Fig. 6, a portion corresponding to a lower corner among the corners of the door cover (170) and a portion corresponding to a lower corner among the corners of the door frame (110) are illustrated. Here, the corner means, as before, a portion where two adjacent bar-shaped sides of a square frame-shaped structure meet. Since a plurality of bending plates (183, 186) are provided at the corners of the door cover (170), deformation may occur at the corners of the door cover (170).

[0086] Looking more closely, as can be seen in the enlarged view of FIG. 6, the bending plates (183, 186) of the door cover (170) can be deformed in the direction of the arrows due to the spring back phenomenon or heat. More precisely, among the bending plates (183, 186) of the door cover (170), the side plate (183) bent from the front plate (181) can be deformed in the direction of arrow ①, and the lower plate (186) bent from the front plate (181) can be deformed in the direction of arrow ②. These directions are opposite to the directions in which the side plate (183) and the lower plate (186) were bent while manufacturing the door cover (170). For reference, since the upper plate (186) and the lower plate (186) are provided with similar structures on the upper and lower portions of the door cover (170), they are given the same drawing reference numerals.

[0087] Referring to Fig. 6, as in Fig. 5, a first joint (G1) may be formed at the corner where the edge of the lower plate (186) and the edge of the side plate (183) face each other among the bending plates (183, 186). Since the width of the first joint (G1) may also increase, it is necessary to prevent this.

[0088] In order to prevent deformation of these bending plates (183, 186), in the present embodiment, the first deformation prevention part (120, 120') of the door frame (110) and the second deformation prevention part (180, 180') of the door cover (170) can cooperate to support the bending plates (183, 186) of the door cover (170). The upper plate (186) and the side plate (183) constituting the upper edge are prevented from deformation by the first upper deformation prevention part (120) and the second upper deformation prevention part (180) of the door frame (110). The lower plate (186) and the side plate (183) constituting the lower edge are prevented from deformation by the first lower deformation prevention part (120') and the second lower deformation prevention part (180') of the door frame (110). This structure is described in detail below.

[0089] Referring to FIGS. 7 and 8, the door frame (110) and the door cover (170) are illustrated as being separated from each other. A frame contact surface (113, 121) may be formed on the frame body (111) constituting the door frame (110). The frame contact surface (113, 121) is formed on the surface of the frame body (111) facing the door cover (170). An adhesive may be applied to the frame contact surface (113, 121) or an adhesive material such as an adhesive tape may be attached to the frame contact surface (113, 121) so as to be adhered to the door cover (170).

[0090] The above frame contact surface (113, 121) may include a first frame contact surface (113) and a second frame contact surface (121). The first frame contact surface (113) may be provided on the lower portion of the frame body (111). Here, the lower portion is a portion that constitutes the lower frame of the frame body (111) having a roughly square frame shape. In the present embodiment, since the door cover (170) has an appearance of roughly a “ㄷ” shape, the frame contact surfaces (113, 121) may be omitted from the upper frame of the frame body (111). The first frame contact surface (113) is in close contact with the first cover portion (171) of the door cover (170).

[0091] The second frame contact surface (121) may be provided on the side of the frame body (111). Here, the side is a portion that constitutes the side frame of the frame body (111) which is approximately in the shape of a square frame. The second frame contact surface (121) is in close contact with the second cover part (175) of the door cover (170). The second frame contact surfaces (121) are provided to form a pair on both sides of the frame body (111). As another example, either one of the first frame contact surface (113) and the second frame contact surface (121) may be omitted, or both may be omitted.

[0092] The door frame (110) may be provided with the expansion board (122). The expansion board (122) protrudes outward from the edge of the door frame (110). Here, the outward direction means a direction that expands the surface area of ​​the door frame (110). The expansion board (122) may be provided with support protrusions (134, 137) to be described below. The expansion board (122) may be in surface contact with the bent portion (184, 187) of the door cover (170).

[0093] The above expansion board (122) can be formed along the length direction and width direction of the second cover part (175) of the door cover (170). Referring to FIG. 8, the expansion board (122) is provided in the left-right direction, which is the length direction of the first cover part (171), and in the up-down direction in which the second cover part (175) extends. The expansion board (122) is integrally provided with the frame body (111). The expansion board (122) expands the bonding area where the door cover (170) is bonded to the door frame (110), and provides an area in which the first upper deformation prevention part (120) can be provided.

[0094] Figures 9 and 10 illustrate the upper and lower portions of the door frame (110), respectively. At this time, the upper portion of the door frame (110) is provided with a first upper deformation-preventing portion (120), and the lower portion is provided with a first lower deformation-preventing portion (120'). In the present embodiment, the first upper deformation-preventing portion (120) and the first lower deformation-preventing portion (120') have similar structures, and therefore, the description will be based on the first upper deformation-preventing portion (120) of Figure 9.

[0095] Referring to Fig. 9, a first upper deformation prevention part (120) may be provided at an upper edge of the door frame (110). The first upper deformation prevention part (120) supports the upper portion of the second cover part (175) of the door cover (170). The first upper deformation prevention part (120) may be provided at each of the upper ends of the door frame (110). Fig. 9 illustrates the first upper deformation prevention part (120) arranged on the upper right side of the door frame (110).

[0096] Looking at the structure of the first upper deformation prevention part (120), a joining space (AS) surrounded by three different surfaces can be formed at the joining portion where the frame body (111) and the expansion board (122) are connected. As shown in Fig. 9, a joining bottom surface (126), which will be described later, is formed on the upper portion of the frame body (111), and an upper board portion (127) of the expansion board (122) is provided at the rear of the joining bottom surface (126). A joining wall surface (128) connected to the upper board portion (127) is formed at the edge of the joining bottom surface (126). The joining wall surface (128) and the upper board portion (127) can be a kind of fence erected around the edge of the joining bottom surface (126). The joining space (AS) can be created in a portion surrounded by the joining bottom surface (126), the joining wall surface (128), and the upper board portion (127).

[0097] The above-mentioned joining space (AS) is not a sealed space, and is open to the sides (see arrow ① in Fig. 9), front (see arrow ② in Fig. 9), and upper (see arrow ③ in Fig. 9). These open portions are covered by the door cover (170). The door cover (170), more precisely, the second upper deformation prevention part (180) of the door cover (170), can be joined in a direction that fills the joining space (AS).

[0098] The above-mentioned joining space (AS) is provided with a supporting protrusion (134, 137). The supporting protrusion (134, 137) can be inserted into a supporting hole (194, 197) of the door cover (170) to catch the supporting hole (194, 197). The supporting protrusion (134, 137) catches the edge of the supporting hole (194, 197), thereby preventing the bent portion (184, 187) of the door cover (170) from being deformed in a direction away from the joining space (AS). More precisely, not only the above-mentioned bending portion (184, 187), but also the bending plates (183, 186) connected to the above-mentioned bending portion (184, 187) can be deformed, and since the support protrusions (134, 137) hook and support the above-mentioned bending portion (184, 187), deformation of the bending plates (183, 186) can also be prevented.

[0099] The above-mentioned support protrusion (134, 137) protrudes from the surface of the door frame (110). The above-mentioned support protrusion (134, 137) is inserted into the hanging hole (194, 197) of the folded portion (184, 187) of the door cover (170). When the above-mentioned support protrusion (134, 137) is inserted into the hanging hole (194, 197), when the above-mentioned bended portion (184, 187) is deformed and moves, the above-mentioned support protrusion (134, 137) is caught on the edge of the hanging hole (194, 197). Accordingly, deformation of the above-mentioned bended portion (184, 187) is limited.

[0100] As shown in Fig. 9, the first upper deformation prevention part (120) is provided with a plurality of support protrusions (134, 137). The plurality of support protrusions (134, 137) are inserted into the hanging holes (194, 197) of the bending part (184, 187). The plurality of support protrusions (134, 137) are not all inserted into the same hanging hole (194, 197), and some are inserted into different support holes (194, 197). The plurality of support protrusions (134, 137) include a first support protrusion (134) and a second support protrusion (137). The first support protrusion (134) is inserted into the first support hole (194) of the side bending portion (184) to be described later, and the second support protrusion (137) is inserted into the second support hole (197) of the upper bending portion (187) to be described later.

[0101] Here, the first support protrusion (134) prevents the side bending portion (184) from being deformed laterally. The second support protrusion (137) prevents the upper bending portion (187) from being deformed upward.

[0102] The first support protrusion (134) and the second support protrusion (137) may be arranged on the same plane of the door frame (110). Referring to Fig. 9, the first support protrusion (134) and the second support protrusion (137) are provided on the extension board (122) of the door frame (110). More precisely, the first support protrusion (134) protrudes from the side board (124), and the second support protrusion (137) protrudes from the upper board (127), but protrudes on the same plane.

[0103] In the present embodiment, the second support protrusion (137) is configured as a pair. The pair of second support protrusions (137) are provided spaced apart from each other. The pair of second support protrusions (137) are spaced apart along a direction (arrow ① direction) orthogonal to the direction (arrow ② direction) in which the door frame (110) and the door cover (170) are coupled to each other. As another example, the second support protrusion (137) may be configured as one, or may be configured as three or more.

[0104] The above support protrusions (134, 137) may include inclined surfaces (134A, 137A). The inclined surfaces (134A, 137A) are portions whose protrusion height decreases toward the edge of the door frame (110). That is, the height gradually decreases toward the edge of the expansion board (122). In the present embodiment, the first support protrusion (134) and the second support protrusion (137) are each formed with inclined surfaces (134A, 137A). If excessive external force is applied and the bending portions (184, 187) are deformed, causing the support holes (194, 197) to come out of the support protrusions (134, 137), it is necessary to deform the bending portions (184, 187) in the opposite direction to restore them. At this time, the ends (184A, 187A) of the above-mentioned bending portions (184, 187) can be easily restored by passing over the inclined surface (134A, 137A).

[0105] The first inclined surface (134A), which is the inclined surface of the first support protrusion (134), and the second inclined surface (137A), which is the inclined surface of the second support protrusion (137), decrease in height in different directions. In the present embodiment, the first inclined surface (134A) slopes downward toward the side, and the second inclined surface (137A) slopes downward toward the upper side. This is in consideration of the deformation directions of the side bending portion (184) and the upper bending portion (187).

[0106] The above support protrusions (134, 137) may include a hooking surface (134B, 137B). The hooking surface (134B, 137B) is connected to one end of the inclined surface (134A, 137A) and hooks and fixes the support hole (194, 197). The hooking surface (134B, 137B) may have a planar structure having a greater inclination angle than the inclined surface (134A, 137A) with respect to the surface of the door frame (110). In this way, the hooking surface (134B, 137B) may have a relatively steeper inclination angle than the inclined surface (134A, 137A) and may hook the edge of the support hole (194, 197). For example, the inclined surface (134A, 137A) may be formed in a vertical direction on the surface of the expansion board (122).

[0107] In this embodiment, the first support protrusion (134) and the second support protrusion (137) are each formed with a hook surface (134B, 137B). The first support protrusion (134) is provided with a first hook surface (134B). The edge of the first support hole (194) of the side bending portion (184) can be hooked onto the first hook surface (134B). The second support protrusion (137) is provided with a second hook surface (137B). The edge of the second support hole (197) of the upper bending portion (187) can be hooked onto the second hook surface (137B). As another example, the inclined surface (134A, 137A) and the hook surface (134B, 137B) may be omitted from the support protrusions (134, 137). As another example, the above-mentioned support protrusion (134, 137) may be simply in a protruding shape, such as a hemispherical shape.

[0108] The door frame (110) may be provided with guide protrusions (133, 136). The guide protrusions (133, 136) are formed so that their protrusion height increases along the joining direction of the door cover (170). Accordingly, the bent portions (184, 187) can pass over the guide protrusions (133, 136) and be seated on the mounting ends (133B, 136B) of the guide protrusions (133, 136). In this way, the bent portions (184, 187) can be prevented from being removed in the separation direction (arrow ② direction) opposite to the joining direction.

[0109] In the present embodiment, the guide jaws (133, 136) may include a first guide jaw (133) provided on a side surface of the door frame (110). The first guide jaw (133) is provided on a side surface of the frame body (111). As shown in FIG. 9, the first guide jaw (133) is provided so that its protruding height increases from the front to the rear, that is, toward the side board portion (124). The first guide jaw (133) includes a first guide surface (133A) whose height gradually increases, and a first mounting end (133B) having a steep slope at the end of the first guide jaw (133). The first guide surface (133A) provides a section on which the side bending portion (184) rides. The first anchoring portion (133B) is a portion that is caught after the side bending portion (184) passes over the first guide surface (133A), and one end (184A, see FIG. 11) of the side bending portion (184) is anchored in the space between the first anchoring portion (133B) and the side board portion (124).

[0110] The above guide jaws (133, 136) may include a second guide jaw (136) formed on the joining bottom surface (126) of the frame body (111). As shown in Fig. 9, the second guide jaw (136) is provided so that the protruding height increases from the front to the rear, i.e., toward the upper board portion (127). The second guide jaw (136) includes a second guide surface (136A) whose height gradually increases, and a second mounting end (136B) having a steep slope at the end of the second guide jaw (136). The second guide surface (136A) provides a section on which the upper bending portion (187) rides. The second anchoring portion (136B) is a portion that is caught after the upper bending portion (187) passes over the second guide surface (136A), and one end (187A, see FIG. 11) of the upper bending portion (187) is anchored in the space between the second anchoring portion (136B) and the upper board portion (127).

[0111] As shown in Fig. 10, the first lower deformation prevention part (120') may also be provided with a plurality of support protrusions (134, 137) and guide protrusions (133, 136). Since the structure of the first lower deformation prevention part (120') is symmetrical to the structure of the first upper deformation prevention part (120), a detailed description thereof will be omitted.

[0112] As for the difference from Fig. 9, the second support protrusion (137) provided on the first lower deformation prevention part (120') is engaged with the second support hole (197) of the lower bending part (187). The joining space (AS) of the first lower deformation prevention part (120') is longer in the left-right direction (see arrow ①) compared to the joining space (AS) of the first upper deformation prevention part (120). Accordingly, a total of three second guide protrusions (136) are provided on the joining bottom surface (126) of the first lower deformation prevention part (120'). As another example, two or one second guide protrusion (136) may also be provided on the joining bottom surface (126) of the first lower deformation prevention part (120').

[0113] FIG. 11 and FIG. 12 illustrate the second upper deformation-preventing portion (180) and the second lower deformation-preventing portion (180') of the door cover (170), respectively. Since the second upper deformation-preventing portion (180) and the second lower deformation-preventing portion (180') have similar structures, the second upper deformation-preventing portion (180) of FIG. 11 will be described as a reference.

[0114] Referring to Fig. 11, a second upper deformation prevention part (180) is provided on the upper portion of the door cover (170). The second upper deformation prevention part (180) surrounds the first upper deformation prevention part (120) and is coupled with the first upper deformation prevention part (120). The second upper deformation prevention part (180) can be made by bending a metal plate material multiple times. When the metal material is bent in this way, a spring-back phenomenon occurs, but the first upper deformation prevention part (120) and the second upper deformation prevention part (180) cooperate to prevent such deformation.

[0115] The door cover (170) may include a front plate (181) that constitutes the front surface of the door (100). The front plate (181) is a portion exposed to the front of the door (100) and surrounds the border of the front panel (230). One end (181A) of the front plate (181) protrudes toward the surface of the door frame (110). The fastening hole (187) described above is formed in this protruding portion.

[0116] The surface of the front plate (181) becomes a cover contact surface (drawing symbol not assigned). That is, the cover contact surface corresponding to the first frame contact surface (113) and the second frame contact surface (121) formed on the door frame (110) is formed on the surface of the front plate (181).

[0117] Bending plates (183, 186) are connected to the front plate (181). The bending plates (183, 186) constitute at least one of the upper surface, the lower surface, or the side surface of the door (100). The bending plates (183, 186) may be formed by bending from the front plate (181). In the present embodiment, the bending plates (183, 186) are bent in a direction approximately perpendicular to the front plate (181). Since the bending plates (183, 186) constitute at least one of the upper surface, the lower surface, or the side surface of the door (100), they may have a smaller area than the front plate (181).

[0118] The above bending plates (183, 186) may be composed of a plurality of bending plates (183, 186). The plurality of bending plates (183, 186) may be bent in different directions. In the present embodiment, the bending plates (183, 186) include a side plate (183), an upper plate (186), and a lower plate (186). For reference, the upper plate (186) and the lower plate (186) are arranged at symmetrical positions on the upper and lower sides of the door cover (170), and are given the same drawing reference numerals.

[0119] The bending plates (183, 186) are each connected with a bending portion (184, 187). The bending portion (184, 187) is formed by bending the bending plates (183, 186) once again. The bending portion (184, 187) is bent in the bending plates (183, 186) so as to face the front plate (181). The bending portion (184, 187) can be in surface contact with the surface of the door frame (110). The bending portion (184, 187) can be formed to have a smaller area than the bending plates (183, 186).

[0120] The side plate (183) and the side bending portion (184) are formed by bending in the same direction (direction of arrow ① in Fig. 11). The upper plate (186) and the upper bending portion (187) are formed by bending in the same direction (direction of arrow ② in Fig. 11). In this way, the side bending portion (184) and the upper bending portion (187) each face the front plate (181).

[0121] At this time, the upper bending portion (187), the side bending portion (184), and the lower bending portion (187) constituting the plurality of bending portions (184, 187) may form the same plane. Accordingly, a second joint (G2) may be formed between the plurality of bending portions (184, 187). The second joint (G2) is formed at a portion where the corners of the plurality of bending portions (184, 187) face each other. The second joint (G2) may not be connected to each other through a separate process and may remain separated. However, the second joint (G2) may be prevented from spreading out through the combination of the support protrusions (134, 137) and the support holes (194, 197). Looking at Fig. 11, it can be seen that a second joint (G2) is formed between the corner (187B) of the upper bend (187) among the bends (184, 187) and the corner (184B) of the side bend (184).

[0122] Support holes (194, 197) are formed in each of the plurality of bending portions (184, 187). The support holes (194, 197) may be formed by penetrating the bending portions (184, 187). A first support hole (194) is formed in the side bending portion (184). A second support hole (197) is formed in the upper bending portion (187). A first support protrusion (134) of the door frame (110) is inserted into the first support hole (194). A second support protrusion (137) of the door frame (110) is inserted into the second support hole (197). In the present embodiment, the first support hole (194) and the second support hole (197) are each configured as a pair. In Fig. 11, only one first support hole (194) is shown, but in Fig. 12, which shows the second lower deformation prevention member (180'), another first support hole (194) is shown.

[0123] Referring to Fig. 12, the second lower deformation prevention part (180') is illustrated. The second lower deformation prevention part (180') has a structure similar to that of the second upper deformation prevention part (180). That is, the second lower deformation prevention part (180') includes a side plate (183) and a lower plate (186) bent from the front plate (181). In addition, a side bending part (184) and a lower bending part (187) are connected to the side plate (183) and the lower plate (186), respectively. Since this structure is symmetrical to that of the second upper deformation prevention part (180), a detailed description thereof will be omitted.

[0124] Figures 13 and 14 illustrate the door frame (110) and the door cover (170) being assembled to each other. Figure 13 shows a state before the door cover (170) is completely assembled to the door frame (110), and Figure 14 shows a state after the door cover (170) is completely assembled to the door frame (110).

[0125] The door cover (170) can be coupled to the door frame (110) in the front-back direction (arrow direction in FIG. 13). That is, the door cover (170) can be laminated on the door frame (110) in the thickness direction of the door (100). In the present embodiment, the support protrusions (134, 137) protrude from the surface of the door frame (110) in the direction in which the door frame (110) and the door cover (170) are laminated. The support holes (194, 197) penetrate the surface of the cover bending portions (184, 187) in the direction in which the door frame (110) and the door cover (170) are laminated. Accordingly, in the process of assembling the door cover (170) to the door frame (110), the support protrusions (134, 137) and the support holes (194, 197) do not cause interference with surrounding components.

[0126] In the process in which the door cover (170) moves toward the door frame (110), one end (184A, 187A) of the bent portion (184, 187) passes over the guide jaw (133, 136) protruding from the frame body (111). In Fig. 13, the second guide jaw (136) among the guide jaws (133, 136) is illustrated. As can be seen therein, one end (187A) of the upper bent portion (187) bent in the upper plate (186) passes over the second guide surface (136A) of the second guide jaw (136). Accordingly, the entire upper bent portion (187) is lifted by the height of the second guide jaw (136), and then elastically restored after completely passing over the second guide jaw (136).

[0127] Referring to Fig. 14, when the door cover (170) and the door frame (110) are combined, the first support protrusion (134) and the second support protrusion (137) are fitted into the first support hole (194) and the second support hole (197) formed in the door cover (170), respectively. At the same time, the upper bending portion (187) is fitted behind the second mounting end (136B) of the second guide jaw (136). Since the support holes (194, 197) and the support protrusions (134, 137) are formed in a direction facing each other, when the door cover (170) is assembled to the door frame (110), the support protrusions (134, 137) are fitted into the support holes (194, 197) without the need for a separate operation. In addition, since the first support protrusion (134) and the second support protrusion (137) are fitted into the first support hole (194) and the second support hole (197), respectively, the assembly directions of the door cover (170) and the door frame (110) can be aligned during the assembly process.

[0128] Meanwhile, based on the joining direction of the door frame (110) and the door cover (170), the cover contact surface may be positioned forward of the support holes (194, 197). Referring to Fig. 14, the second frame contact surface (121) formed on the door frame (110) and the front plate (181) of the door cover (170) facing it are illustrated. The surface of the front plate (181) adhered to the second frame contact surface (121) becomes the cover contact surface, and the cover contact surface is positioned forward of the first support hole (194) and the second support hole (197). In this way, the bonding portion of the door frame (110) and the door cover (170) and the joining portion by the support protrusions (134, 137) and the support holes (194, 197) are spaced apart in the front-back direction. Through this, the door frame (110) and the door cover (170) can form a bonding force at various positions.

[0129] FIG. 15 and FIG. 16 show the joining space (AS) of the first upper deformation prevention part (120) by cutting the upper and side portions of the door cover (170) and the door frame (110), respectively. As can be seen therein, the first support protrusion (134) is inserted into the first support hole (194), and the first support protrusion (134) is hooked on the edge of the first support hole (194). The second support protrusion (137) is inserted into the second support hole (197), and the second support protrusion (137) is hooked on the edge of the second support hole (197). One end (187A) of the upper bending part (187) is disposed behind the second fixing end (136B) after completely passing over the second guide jaw (136).

[0130] Accordingly, the first support hole (194) and the first support protrusion (134) can cooperate with each other to prevent the side bending portion (184) from being deformed in the outward direction (arrow ① direction). The second support hole (197) and the second support protrusion (137) can cooperate with each other to prevent the upper bending portion (187) from being deformed in the outward direction (arrow ③ direction). As a result, the side bending portion (184) and the upper bending portion (187) do not spread apart, and the second joint (G2) can be prevented from being enlarged.

[0131] Referring to Fig. 15, the second guide jaw (136) prevents the upper bending portion (187) from falling forward, i.e., in the opposite direction (arrow ② direction) to the direction in which the door cover (170) is coupled. Referring to Fig. 16, one end (184A) of the side bending portion (184) is supported by the first guide jaw (133). One end (184A) of the side bending portion (184) passes over the first guide surface (133A) of the first guide jaw (133) and is positioned at the first mounting end (133B). Accordingly, the first guide jaw (133) prevents the side bending portion (184) from falling forward, i.e., in the opposite direction (arrow ② direction) to the direction in which the door cover (170) is coupled.

[0132] Meanwhile, one end (184A, 187A) of the cover bending portion (184, 187) is supported on the surface of the door frame (110), so that deformation of the cover bending portion (184, 187) can be limited. More precisely, as shown in FIG. 15, one end (187A) of the upper bending portion (187) can contact the joining bottom surface (126). In this way, the upper bending portion (187) is supported on the joining bottom surface (126), so that the upper bending portion (187) and the upper plate (186) can be prevented from being excessively changed inwardly of the door (100) (in the opposite direction of arrow ③). That is, even if the upper plate (186) is pressed toward the inside of the door (100) by an external force, deformation can be prevented because one end (187A) of the upper bending portion (187) comes into contact with the joining bottom surface (126).

[0133] Referring to FIGS. 16 and 17, one end (184A) of the side bending portion (184) can be in contact with the joining bottom surface (126) and the side surface of the frame body (111). In this way, the side bending portion (184) is supported by the joining bottom surface (126) and the side surface of the frame body (111), thereby preventing the side bending portion (184) and the side plate (183) from being excessively changed inwardly of the door (100) (in the opposite direction of arrow ①). That is, even if the side plate (183) is pressed inwardly of the door (100) by an external force, one end (184A) of the side bending portion (184) can be prevented from being deformed because it comes into contact with the joining bottom surface (126) and the side surface of the frame body (111).

[0134] The structures of the first lower deformation prevention part (120') and the second lower deformation prevention part (180') are illustrated in FIGS. 18 and 19. Since this structure is similar to the structures of the first upper deformation prevention part (120) and the first upper deformation prevention part (120), a detailed description thereof will be omitted. Referring to FIG. 18, when the door cover (170) and the door frame (110) are combined, the first support protrusion (134) and the second support protrusion (137) are fitted into the first support hole (194) and the second support hole (197) formed in the door cover (170), respectively. At the same time, the lower bending part (187) is seated behind the second mounting end (136B) of the second guide jaw (136). Since the above support holes (194, 197) and the support protrusions (134, 137) are formed in a direction facing each other, when the door cover (170) is assembled to the door frame (110), the support protrusions (134, 137) are fitted into the support holes (194, 197) without the need for a separate operation.

[0135] Fig. 19 shows the joining space (AS) of the first lower deformation prevention part (120') by cutting the lower part of the door cover (170) and the door frame (110). As can be seen therein, the first support protrusion (134) is inserted into the first support hole (194), and the first support protrusion (134) is hooked on the edge of the first support hole (194). The second support protrusion (137) is inserted into the second support hole (197), and the second support protrusion (137) is hooked on the edge of the second support hole (197). One end of the lower bending part (187) is disposed behind the second fixing end (136B) after completely passing over the second guide jaw (136).

[0136] Meanwhile, although not shown, the support holes (194, 197) may be formed in the door frame (110), and the support protrusions (134, 137) may be provided in the door cover (170). For example, the support holes (194, 197) may have a structure that is sunken in the surface of the door frame (110). The support protrusions (134, 137) may have a structure in which a portion of the door cover (170) is cut out and protrudes in a cantilever shape. In this way, when the door cover (170) is assembled to the door frame (110), the support protrusions (134, 137) may be inserted into the support holes (194, 197).

[0137] The above description is merely an illustrative illustration of the technical idea of ​​the present invention, and those skilled in the art will appreciate that various modifications and variations can be made without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate, rather than limit, the technical idea of ​​the present invention, and the scope of the technical idea of ​​the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

Claims

1. Door frame; and A door cover coupled to the door frame and surrounding the surface of the door frame; The above door cover is provided with a cover bending portion that is bent to face the surface of the door frame, A door for a home appliance, wherein a support protrusion and a support hole into which the support protrusion is inserted and caught are formed on the surfaces of the door frame facing each other and the cover bending portion.

2. In claim 1, the door frame and the door cover are laminated and joined to each other, The above supporting protrusion protrudes from the surface of the door frame in the direction in which the door frame and the door cover are laminated, A door for a home appliance in which the above support hole penetrates the surface of the cover bending portion in the direction in which the door frame and the door cover are laminated.

3. In claim 1, the door frame is provided with an extension board that extends from the edge of the door frame to the outside of the door frame, The above door bending part is in surface contact with the above expansion board, A door for home appliances in which the above-mentioned supporting protrusion protrudes from the surface of the above-mentioned expansion board.

4. In claim 1, a plurality of supporting protrusions protrude from the door frame, A door for a home appliance in which the plurality of support protrusions are each inserted into the plurality of support holes.

5. In claim 1, a plurality of supporting protrusions protrude from the door frame, A door for a home appliance, wherein the plurality of supporting protrusions are provided on the same plane of the door frame.

6. In claim 1, the door frame A frame body surrounded by the above door cover; and An extension board extending from the edge of the above frame body; The deformation prevention part where the above frame body and the above expansion board are connected has a joining space surrounded by three different sides, The above cover bending part is a door for a home appliance that makes surface contact with the expansion board in the above joining space.

7. In claim 1, the door cover A front plate forming the front of the above door; A bending plate connected to the front plate and constituting at least one of the upper surface, lower surface or side surface of the door; and A door for a home appliance, comprising: a cover bending portion bent from the bending plate so as to face the front plate, and in which the support hole is formed; 8. In claim 7, the door frame is provided with an extension board that extends from the edge of the door frame to the outside of the door frame, The above cover bending portion is in surface contact with the expansion board, A door for a home appliance in which the support protrusion protrudes in the direction of the front plate on the above expansion board.

9. In claim 7, the bending plate An upper plate constituting the upper surface of the above door; Side plates constituting the sides of the above door; and including a lower plate constituting the bottom surface of the above door; The above cover bending part An upper bending portion bent from the upper plate; A side bending portion bent from the above side plate; and A door for a home appliance, comprising a lower bending portion bent from the lower plate.

10. A door for a home appliance according to claim 9, wherein the upper bending portion, the side bending portion, and the lower bending portion form the same plane.

11. A door for a home appliance according to claim 10, wherein a joint extending along the direction of joining of the door frame and the door cover is formed at a corner where the edge of the upper plate and the edge of the side plate face each other.

12. A door for a home appliance according to claim 9, wherein support holes are formed in each of the upper bending portion, the side bending portion, and the lower bending portion.

13. In claim 1, the supporting protrusion A sloped surface with a lower protruding height toward the edge of the door frame; and A door for a home appliance, comprising a hook surface connected to one end of the above-mentioned inclined surface and fixing the support hole; 14. A door for a home appliance according to claim 13, wherein the engaging surface is a flat structure having a greater angle of inclination than the inclined surface with respect to the surface of the door frame.

15. In claim 1, a guide protrusion having a higher protruding height is provided on the side of the door frame along the direction of joining with the door cover. A door for home appliances, wherein one end of the side bending portion bent from the side of the door cover passes over the guide jaw and is settled at the rear of the guide jaw.

16. A door for a home appliance according to claim 1, wherein one end of the cover bending portion is supported on the surface of the door frame, thereby limiting deformation of the cover bending portion.

17. In claim 1, the door frame A frame body surrounded by the above door cover; and An extension board extending from the edge of the above frame body; The surface of the above frame body is provided with a guide protrusion that protrudes in a direction perpendicular to the direction in which the door cover is assembled to the door frame. A door for a home appliance, wherein, during the assembly process of the door cover and the door frame, one end of the cover bending portion facing the surface of the frame body passes over the guide jaw and is placed at the rear of the guide jaw.

18. In claim 1, a frame contact surface is formed on the surface of the door frame facing the door cover, On the surface of the door cover facing the door frame, a cover contact surface facing the frame contact surface is formed, A door for home appliances in which the above frame contact surface and the above cover contact surface are adhered to each other.

19. A door for a home appliance according to claim 18, wherein, based on the direction of joining of the door frame and the door cover, the cover contact surface is positioned forward of the support hole.

20. In claim 1, the door cover A first cover portion extending in the left and right directions; and It includes a second cover part extending in the vertical direction from each end of the first cover part; The above support hole is a door for a home appliance formed at a connecting portion where one end of the first cover part and one end of the second cover part are connected to each other, and at the other end of the second cover part.

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