Patent Description:
In general, a refrigerator represents a household appliance provided with a main body including a storage compartment and a cool air supply system to store foods in a fresh state. The storage compartment includes a refrigerating compartment for keeping foods refrigerated at about <NUM> to <NUM> and a freezing compartment for keeping foods frozen at about <NUM> to -<NUM>. In general, the storage compartment has a front surface thereof open such that food items are introduced and withdrawn therethrough, and the open front surface of the storage compartment is opened and closed by a door.

The refrigerator, according to the storage compartment and a door thereof, may be classified into different types: a top mounted freezer (TMP)-type refrigerator provided with a storage compartment that is divided into an upper side and a lower side by a horizontal partition while a freezing compartment is formed at the upper side and a refrigerating compartment is formed at the lower side; and a bottom mounted freezer (BMF)-type refrigerator provided with a refrigerating compartment formed at the upper side while a freezing compartment is formed at the lower side. In addition, a side by side (SBS)-type refrigerator is provided therein with a storage compartment that is divided into an left side and a right side by a vertical partition while a freezing compartment is formed at one side and a refrigerating compartment is formed at the other side, and a French door refrigerator (FDR)-type refrigerator is provided therein with a storage compartment that is divided into an upper side and a lower side by a horizontal partition while a refrigerating compartment is formed at the upper side and a freezing compartment is formed at the lower side, as the refrigerating compartment at the upper side is opened/closed by a pair of doors.

<CIT> disclose a refrigerator including a door body separably mounted on a door body.

<CIT> relates to a door for a refrigerator, which includes a decorative panel in front of a door body.

Therefore, it is an object of the disclosure to provide a refrigerator in which a door panel of a door is replaceable.

Therefore, it is an aspect of the disclosure to provide a refrigerator as defined in claim <NUM>.

Further embodiments are disclosed in dependent claims.

As is apparent from the above, the refrigerator includes a panel fixer provided on a door panel and a body fixer provided on a door body, so that the door panel can be easily replaced.

Hereinafter, with reference to the accompanying drawings an embodiment according to the disclosure will be described in detail.

<FIG> is a view illustrating a refrigerator <NUM> according to an embodiment of the disclosure.

Referring to <FIG>, the refrigerator <NUM> includes a main body <NUM>, a storage compartment <NUM> divided into an upper side and a lower side in the main body <NUM>, a door <NUM> opening and closing the storage compartment <NUM>, and a cold air supply device (not shown) supplying cold air to the storage compartment <NUM>.

The main body <NUM> includes an inner case <NUM> forming the storage compartment <NUM>, an outer case <NUM> coupled to an outer side of the inner case <NUM> to form the external appearance thereof, and a body heat insulating material foamed between the inner case <NUM> and the outer case <NUM> to insulate the storage compartment <NUM>.

The cold air supply device may generate cold air using a refrigeration cycle that compresses, condenses, expands, and evaporates a refrigerant.

The storage compartment <NUM> may be divided into a plurality of areas by a partition <NUM>, and may be provided with a plurality of shelves <NUM> and receptacles <NUM> therein to store food items and the like.

The storage compartment <NUM> may be divided into a plurality of storage compartments <NUM>, <NUM>, and <NUM> by the partition <NUM>, and the partition <NUM> includes a first partition <NUM> horizontally coupled to the interior of the storage compartment <NUM> to divide the storage compartment <NUM> into an upper storage compartment (or a first storage <NUM>) and lower storage compartments <NUM> and <NUM>, and a second partition <NUM> vertically coupled to the lower storage compartments <NUM> and <NUM> to divide the lower storage compartments <NUM> and <NUM> as a second storage compartment <NUM> and a third storage compartment <NUM>.

The partition <NUM> having a T-shape formed of the first partition <NUM> and the second partition <NUM> coupled thereto may divide the storage compartment <NUM> into three spaces. Among the upper storage compartment <NUM> and the lower storage compartments <NUM> and <NUM> divided by the first partition <NUM>, the upper storage compartment <NUM> may be used as a refrigerating compartment, and the lower storage compartments <NUM> and <NUM> may be used as a freezing compartment.

The lower storage compartments <NUM> and <NUM> may be used as freezing compartments as a whole. The second storage compartment <NUM> may be used as a freezing compartmenting, and the third storage compartment <NUM> may be used as a freezing compartment. The second storage compartment <NUM> may be used as a freezing compartment, and the third storage compartment <NUM> may be used as both a freezing compartment and a refrigerating compartment.

The division of the storage compartment <NUM> described above is merely an example, and each of the storage compartments <NUM>, <NUM>, and <NUM> may be used differently from the above description.

The storage compartment <NUM> may be opened and closed by the door <NUM>. The door <NUM> includes a pair of first doors (or upper doors <NUM>) for opening and closing the upper storage compartment <NUM> and a pair of second doors (or lower doors) <NUM> for opening and closing the lower storage compartment <NUM> and <NUM>. The pair of first doors <NUM> and the pair of second doors <NUM> may open and close a body opening 10a of the main body <NUM>.

One of the pair of first doors <NUM> may be provided with a rotating bar <NUM>. The rotating bar <NUM> may seal a gap between the pair of first doors <NUM> when the pair of first doors <NUM> are closed. The main body <NUM> may be provided with a rotating bar guide <NUM> for guiding the movement of the rotating bar <NUM>.

In the following description, one first door <NUM> is described for the convenience of description, and the description of the remaining first door <NUM> is omitted. However, the configuration of the first door <NUM>, which is not described below, may be substantially the same as that of the first door <NUM> described below, except that the first door <NUM> is provided in mutual mirror symmetry with the first door <NUM> described below. In addition, the same configuration as that of the first door <NUM> may be applied to the second door <NUM>, and a detailed description thereof may be omitted.

The upper storage compartment <NUM> may be opened and closed by the first door <NUM> rotatably coupled to the main body <NUM>. The first door <NUM> may be opened or closed through a first door handle (not shown). The first door handle may be a recess formed in the bottom surface of the first door <NUM>.

A first door shelf <NUM> may be provided on the rear surface of the first door <NUM> to accommodate food. The first door shelf <NUM> includes first shelf support parts <NUM> arranged on both left and right sides of the first door <NUM> while vertically extending to support the first door shelf <NUM>. The first shelf support part <NUM> may be provided to be detachably provided on the first door <NUM> as a separate component. In this embodiment, the first shelf support part <NUM> protrudes backward from the rear surface of the first door <NUM> while extending in the vertical direction.

A first gasket <NUM> may be provided at the edge of the rear surface of the first door <NUM> to seal a gap with respect to the main body <NUM> when the first door <NUM> is closed. The first gasket <NUM> may be installed in the form of a loop along the edge of the rear surface of the first door <NUM>, and a first magnet (not shown) may be included in the first gasket <NUM>.

The lower storage compartments <NUM> and <NUM> may be opened and closed by the second doors <NUM> rotatably coupled to the main body <NUM>. The second door <NUM> may be opened or closed through a second door handle <NUM>. The second door handle <NUM> may be a recess formed in the upper surface of the second door <NUM>. Although not shown, the second door <NUM> may be provided in a sliding manner.

A second gasket <NUM> may be provided at an edge of the rear surface of the second door <NUM> to seal a gap with respect to the main body <NUM> while the second door <NUM> is closed. The second gasket <NUM> may be installed in a loop shape along the edge of the rear surface of the second door <NUM>, and a second magnet (not shown) may be included in the second gasket <NUM>.

<FIG> is a view illustrating a first door shown in <FIG>. <FIG> is an exploded view illustrating a state in which a door panel is dissembled from the first door shown in <FIG>. <FIG> is an enlarged view illustrating portion A of in <FIG>. <FIG> is an enlarged view illustrating portion A' of in <FIG>. <FIG> is a view illustrating a first fixer shown in <FIG>. <FIG> is a view illustrating a second fixer shown in <FIG>. <FIG> is an exploded view illustrating a door body shown in <FIG>. <FIG> illustrates an enlarged cross-sectional view taken along line B-B ' of in <FIG>. <FIG> is a view illustrating a state in which another type of door panel is coupled to the first door shown in <FIG>.

Referring to <FIG>, the first door <NUM> includes a door panel <NUM> and a door body <NUM>. The door panel <NUM> is detachably coupled to the door body <NUM>.

Referring to <FIG>, the door panel <NUM> may include a panel body <NUM>, an edge cover <NUM>, and a buffer member <NUM>.

The panel body <NUM> may form the extern appearance of the first door <NUM>. The panel body <NUM> may have a flat plate shape. A variety of designs may be provided on the front surface of the panel body <NUM> to satisfy the user's needs. First and second fixers <NUM> and <NUM> may be disposed on the rear surface of the panel body <NUM> to be coupled to the door body <NUM>.

The edge cover <NUM> may be arranged on an upper end of the rear surface of the panel body <NUM>. The edge cover <NUM> may be formed to cover at least a portion of an upper edge of the panel body <NUM>. The edge cover <NUM> may be integrally formed with the panel body <NUM> or may be detachably provided on the panel body <NUM>.

Referring to <FIG>, the edge cover <NUM> may be provided to cover at least a portion of the edge of the panel body <NUM> together with a first chassis (or a right chassis <NUM>), a second chassis (or a left chassis <NUM>), and a lower door cap <NUM> when the door panel <NUM> is mounted to the door body <NUM>. The door panel <NUM> may be coupled to the door body <NUM> by sliding from an upper front side to a lower rear side.

In detail, referring to <FIG>, the door body <NUM> may have the first chassis <NUM>, the second chassis <NUM>, and the lower door cap <NUM>, at least a portion of which protrudes forward with respect to a cover <NUM> so as to cover at least a portion of the edge of the door panel <NUM>. However, the door body <NUM> has an upper door cap <NUM> that is not provided with a portion protruding to cover at least a portion of the upper edge of the door panel <NUM>, different from the first chassis <NUM>, the second chassis <NUM>, and the lower door cap <NUM>. That is, the forward protruding lengths of the chassis <NUM> and <NUM> and the lower door cap <NUM> may be provided longer than the forward protruding length of the upper door cap <NUM>. Steps may be formed in the front and rear directions at coupling portions of the upper ends of the chassis <NUM> and <NUM> and the upper door cap <NUM>.

That is, the door body <NUM> may form a space in which the door panel <NUM> is mounted, and an upper side of the space in which the door panel <NUM> is mounted may be open for the door panel <NUM> to be mounted therein. The edge cover <NUM> of the door panel <NUM> may be positioned on the open upper side of the door body <NUM> when the door panel <NUM> is mounted to the door body <NUM>. The edge cover <NUM> may have a portion protruding by a length corresponding to the lengths of the portions of the chassis <NUM>, <NUM> protruding to cover the at least one portions of left and right side edges of the panel body <NUM> when the door panel <NUM> is mounted to the door body <NUM>. With such a configuration, the edge cover <NUM>, the chassis <NUM> and <NUM>, and the lower door cap <NUM> may deliver a sensation of a unitary structure when the door panel <NUM> is mounted on the door body <NUM>.

However, unlike the above, the edge cover <NUM> may be omitted, and the chassis <NUM> and <NUM> and the lower door cap <NUM> may not have portions protruding to cover at least one portions of the left and right side edges and the lower side edge of the panel body <NUM>. In this case, the edge portion of the panel body <NUM> of the door panel <NUM> exposed to the user may be rounded for the safety of use.

Unlike the above, the edge cover <NUM> of the door panel <NUM> may be located at the left side end or the right side end of the panel body <NUM>. Accordingly, the door panel <NUM> may be coupled to the door body <NUM> by sliding in the left or right direction.

The buffer member <NUM> may be disposed on the rear surface of the panel body <NUM>. The buffer member <NUM> may be disposed in a space formed between the door panel <NUM> and the cover <NUM>. The buffer member <NUM> may be configured to prevent the shock from being transmitted to the cover <NUM> when an impact is applied to the door panel <NUM>. In addition, the buffer member <NUM> may be configured to absorb the noise that may be generated in the door panel <NUM>. The buffer member <NUM> may include expanded polystyrene.

The buffer member <NUM> may be provided in a plurality of units thereof. The plurality of buffer members <NUM> may form a flow path that allows a fluid to flow between the door panel <NUM> and the cover <NUM>.

The buffer member <NUM> may be provided to have a thickness corresponding to a thickness of a first fixing body <NUM> of the first fixer <NUM> and a second fixing body <NUM> of the second fixer <NUM>.

Referring to <FIG> and <FIG>, the first fixer <NUM> may be mounted to the rear surface of the panel body <NUM>. The first fixer <NUM> may be attached to the panel body <NUM> by an adhesive (<NUM> in <FIG>). The first fixer <NUM> may include the first fixing body <NUM> that comes into contact with the panel body <NUM>. The first fixer <NUM> may be provided to be screwed to the door body <NUM>.

The first fixing body <NUM> may have a bent portion 162a at an upper end thereof. The bent portion 162a may extend in a direction away from the panel body <NUM>. The bent portion 162a may extend toward the door body <NUM>.

The bent portion 162a is provided with a fixing hole <NUM>. The fixing hole <NUM> may be provided to be screwed with the 140when the door panel <NUM> is mounted to the door body <NUM>. As a first fastening member (<NUM> in <FIG>) is coupled to the fixing hole <NUM> and a cap hole 132a of the upper door cap <NUM>, the first fixer <NUM> is fixed to the upper door cap <NUM>.

The bent portion 162a is provided at an end thereof with a locking protrusion <NUM>. The locking protrusion <NUM> may extend downward from the end of the bent portion 162a. The locking protrusion <NUM> may be inserted into a frame accommodation groove (132b in <FIG>) of the upper door cap <NUM>. As the locking protrusion <NUM> is inserted into a frame accommodation groove 132b of the upper door cap <NUM> and locked therewith, the door panel <NUM> may be additionally supported by the door body <NUM>.

Referring to <FIG>, since the door panel <NUM> is mounted to the door body <NUM> by sliding from the upper side to the lower side, the first fixer <NUM> is illustrated as being disposed at the upper end portion of the panel body <NUM>. However, when the door panel <NUM> is coupled to the door body <NUM> by sliding from the left side to the right side of the door body <NUM> or from the right side to the left side of the door body <NUM>, the first fixer <NUM> may be disposed at the left end or the right end of the panel body <NUM>. In addition, when the door panel <NUM> is coupled to the door body <NUM> by sliding from the lower side to the upper side, the first fixer <NUM> may be disposed at the lower end portion of the panel body <NUM>.

Referring to <FIG> and <FIG>, the second fixer <NUM> may be mounted on the rear surface of the panel body <NUM>. The second fixer <NUM> may be attached to the panel body <NUM> through an adhesive (<NUM> in <FIG>). The second fixer <NUM> may include a second fixing body <NUM> that comes into contact with the panel body <NUM>. The second fixer <NUM> may be provided to be hooked with the door body <NUM>.

The second fixer <NUM> may include a hook <NUM> protruding from the second fixing body <NUM> toward the door body <NUM>. The hook <NUM> may be provided to be inserted into a cover fixer <NUM> disposed on the cover <NUM>.

In detail, when the hook <NUM> may include a coupling guide part 168a that may be obliquely formed to guide the movement of the hook <NUM> when the hook <NUM> is inserted into the cover fixer <NUM>. The coupling guide part 168a may be provided at a front end portion defined in a direction of the hook <NUM> being inserted into the cover fixer <NUM>. The coupling guide part 168a extends from the panel body <NUM> toward the door body <NUM> while obliquely facing down.

The hook <NUM> may include a seating part 168b extending rearward from the second fixing body <NUM> and an extension part 168c extending from the seating part 168b to the coupling guide part 168a. The seating part 168b may be provided to support the load of the door panel <NUM> when the hook <NUM> is inserted into the cover fixer <NUM>.

The first and second fixers <NUM> and <NUM> allow the door panel <NUM> to be firmly coupled to and easily separated from the door body <NUM>.

In <FIG> and <FIG>, the door panel <NUM> covering the front of the door body <NUM> is illustrated as a single panel body <NUM>, but the disclosure is not limited thereto, and the door panel <NUM> may include a plurality of the panel bodies <NUM> and each of the panel bodies may include a first fixer and a second fixer, and the first and second fixers provided on each panel body may be provided in the same manner or different manner according to the direction in which each panel body is coupled to the door body <NUM>. In addition, the above description has been made in relation that the door panel <NUM> includes the first fixer <NUM> having the locking protrusion <NUM> and the second fixer <NUM> having the hook <NUM> and the door body <NUM> includes the cover fixer <NUM> having the accommodation space <NUM>, but the disclosure is not limited thereto. For example, unlike <FIG>, the door panel <NUM> may include a cover fixer having an accommodation space, and the door body <NUM> may include a first fixer and a second fixer in a hook shape. However, in this case, when the door panel <NUM> is coupled to the door body <NUM>, the locking protrusion of the first fixer and the hook of the second fixer may extend upward and the accommodation space of the cover fixer may also extend upward such that the door panel <NUM> is fixed to the door body <NUM> by its own weight.

Referring to <FIG> and <FIG>, the door body <NUM> includes the chassis <NUM> and <NUM>, the upper door cap <NUM>, the lower door cap <NUM>, the cover <NUM>, and a case <NUM>. The chassis <NUM> and <NUM> may include a material different from a material forming the upper door cap <NUM> and the lower door cap <NUM>. In detail, the chassis <NUM> and <NUM> may include aluminum. The upper door cap <NUM> and the lower door cap <NUM> may include acrylonitrile butadiene styrene copolymer (ABS) resin.

The chassis <NUM> and <NUM> may include the first chassis <NUM> forming the right side surface of the first door <NUM> and the second chassis <NUM> forming the left side surface of the first door <NUM>. The chassis <NUM> and <NUM> may extend in the vertical direction.

Referring to <FIG> and <FIG>, the chassis <NUM> and <NUM> may include an edge accommodation groove <NUM>. Hereinafter, the first chassis <NUM> will be described for the sake of convenience in description, and the same structure may be applied to the second chassis <NUM>.

The first chassis <NUM> may include an edge accommodation groove <NUM> positioned to correspond to the right end portion of the door panel <NUM> when the door panel <NUM> is mounted to the door body <NUM>. The edge accommodation groove <NUM> may be provided as a recess formed in one surface of the first chassis <NUM> facing the door panel <NUM> to accommodate the end portion of the door panel <NUM> when the door panel <NUM> is coupled to the first chassis <NUM>.

In detail, as shown in <FIG>, the door panel <NUM> may have a thickness of a predetermined size or more. The door panel <NUM> illustrated in <FIG> may include glass. When the door panel <NUM> has a thickness greater than or equal to a predetermined size, an end portion 110a of the door panel <NUM> may be smoothed.

However, when it is not easy to smooth an end portion 110a' of a door panel <NUM>' as illustrated in <FIG>, the portion 110a' of the door panel <NUM>' may be subject a bending treatment. In this case, the portion 110a' of the door panel <NUM>' bent backward may be accommodated in the accommodation groove <NUM> of the first chassis <NUM>. The door panel <NUM>' shown in <FIG> may be provided as an iron plate.

With such a configuration, the chassis <NUM> and <NUM> having the edge accommodation groove <NUM> may be compatible with various types of door panels <NUM> and <NUM>'.

The first chassis <NUM> may include a fixing protrusion <NUM> for fixing the cover <NUM>. The fixing protrusion <NUM> may protrude toward a fixing rib <NUM> of the cover <NUM>.

Referring to <FIG> and <FIG>, the upper door cap <NUM> may be coupled to the upper ends of the chassis <NUM> and <NUM>. The upper door cap <NUM> may form the upper surface of the first door <NUM>. The upper door cap <NUM> may include a first cap body <NUM>.

In detail, referring to <FIG>, the first cap body <NUM> is provided with a coupling groove <NUM>. The coupling groove <NUM> may be provided as a recess formed in one surface of the first cap body <NUM> facing the door panel <NUM>. The coupling groove <NUM> is provided to accommodate a portion of the first fixer <NUM>.

The coupling groove <NUM> may be provided with a cap hole 132a. The cap hole 132a is formed at a position corresponding to the fixing hole <NUM> when the first fixer <NUM> is mounted in the coupling groove <NUM>. When the door panel <NUM> is fixed to the door body <NUM>, the first fastening member <NUM> is screwed to the fixing hole <NUM> and the cap hole 132a.

The coupling groove <NUM> may be provided with the frame accommodation groove 132b. The frame accommodation groove 132b may be formed to accommodate the locking protrusion <NUM> of the first fixer <NUM>. The frame accommodation groove 132b may support the locking protrusion <NUM> so that the door panel <NUM> is not separated from the door body <NUM>.

The first cap body <NUM> may be provided with a slit <NUM>. A cover rib <NUM> of the cover <NUM> may be inserted into the slit <NUM>. When the cover rib <NUM> is inserted into the slit <NUM>, a second fastening member <NUM> is inserted into the cover rib <NUM> and the slit <NUM> to fix the door panel <NUM> to the upper door cap <NUM>.

The first cap body <NUM> is provided on the upper surface thereof with a through hole <NUM>. In detail, referring to <FIG>, <FIG>, and <FIG>, when a first cap cover <NUM> is not mounted, the through hole <NUM> may allow the coupling groove <NUM> to communicate with the outside. The first fastening member <NUM> may be inserted into the coupling groove <NUM> through the through hole <NUM> and then screwed to the fixing hole <NUM> and the cap hole 132a. After the insertion of the first fastening member <NUM> is completed, the through hole <NUM> may be covered by the first cap cover <NUM>. The first cap cover <NUM> may be detachably mounted to the first cap body <NUM> to open and close the through hole <NUM>.

The lower door cap <NUM> may be coupled to the lower ends of the chassis <NUM> and <NUM>. The lower door cap <NUM> may form the lower surface of the first door <NUM>. The lower door cap <NUM> may be provided with a first door handle (not shown).

The chassis <NUM> and <NUM>, the upper door cap <NUM>, and the lower door cap <NUM> may form the upper, lower, left, and right side surfaces of the first door <NUM>. The chassis <NUM>, <NUM>, the upper door cap <NUM>, and the lower door cap <NUM> may be collectively referred to as a door frame. The door frame may have a front side and a rear side thereof open. Meanwhile, although <FIG> illustrates that the chassis <NUM> and <NUM>, the upper door cap <NUM>, and the lower door cap <NUM> are detachably provided, the chassis <NUM> and <NUM> and the upper door cap <NUM>, and the lower door cap <NUM> may be integrally formed with each other. That is, the door frame may be formed in a unitary body.

The cover <NUM> may be mounted to the door frame to cover the open front side of the door frame. The cover <NUM> may include a cover body <NUM>.

The cover body <NUM> may include a cover hole <NUM> through which a rivet (not shown) passes when the cover <NUM> is coupled to the chassis <NUM> and <NUM>. As the rivet is coupled to the chassis <NUM> and <NUM> by passing through the cover hole <NUM>, the cover body <NUM> may be fixed at both ends thereof to the chassis <NUM> and <NUM>.

The cover body <NUM> may include a cutout <NUM> formed to correspond to the coupling groove <NUM> of the upper door cap <NUM>. The cutout <NUM> may be formed to expose the coupling groove <NUM> when the cover <NUM> is coupled to the door frame. The cutout <NUM> allows a portion of the first fixer <NUM> to be inserted into the coupling groove <NUM>.

The cover body <NUM> may include the cover rib <NUM> to be coupled to the upper door cap <NUM>. The cover rib <NUM> may extend from the upper end of the cover body <NUM> toward the upper door cap <NUM>. When the cover <NUM> is mounted to the door frame, the cover rib <NUM> may be fixed by the second fastening member <NUM> while being inserted into the slit <NUM> of the upper door cap <NUM>.

The cover body <NUM> may be provided at left and right side ends thereof with the fixing ribs <NUM> to be respectively coupled to the chassis <NUM> and <NUM>. The fixing ribs <NUM> may extend from the left and right side ends of the cover body <NUM> toward the chassis <NUM> and <NUM>.

In detail, referring to <FIG>, the fixing ribs <NUM> may be provided with plate beads 145a protruding toward the chassis <NUM> and <NUM>. When the cover <NUM> is mounted to the door frame, the plate bead 145a of the fixing rib <NUM> may be coupled to the fixing protrusion <NUM> of the first chassis <NUM>. Accordingly, the cover <NUM> may be supported by the chassis <NUM> and <NUM>.

The cover <NUM> may include the cover fixer <NUM> provided to be coupled to the second fixer <NUM>. The cover body <NUM> may have a mounting hole <NUM> for fixing the cover fixer <NUM>. The cover fixer <NUM> may be detachably mounted to the mounting hole <NUM>. The cover body <NUM> may be provided with a guide bead <NUM> for guiding the mounting of the cover fixer <NUM>.

The case <NUM> may be mounted to the door frame to cover the open rear side of the door frame. The case <NUM> may include the first shelf support part <NUM> on which the first door shelf <NUM> is mounted.

Hereinafter, a process of assembling the door body <NUM> will be described.

First, the upper door cap <NUM> and the lower door cap <NUM> are respectively coupled to the upper and lower ends of the chassis <NUM> and <NUM> to form the door frame. The cover <NUM> and the case <NUM> are coupled to the front and rear surfaces of the door frame to form the door body <NUM>. A heat insulating material (not shown) is foamed to the inside of the door body <NUM>.

<FIG> is an enlarged view illustrating portion C shown in <FIG>. <FIG> is a rear view illustrating a state in which a cover fixer shown in <FIG> is fixed to a panel body. <FIG> is a front view illustrating a cover fixer fixed to the panel body shown in <FIG>.

Referring to <FIG>, a configuration of coupling the cover fixer <NUM> to the cover <NUM> will be described.

Referring to <FIG>, the guide bead <NUM> formed on the cover body <NUM> of the cover <NUM> may be disposed at an outer side of the circumference of the mounting hole <NUM>. The guide bead <NUM> may be formed to guide the sliding movement when the cover fixer <NUM> is coupled to the cover <NUM>. The guide bead <NUM> may be formed to correspond to the outer edge of the cover fixer <NUM> in a size that allows the length for sliding movement.

The cover body <NUM> may include a guide rib <NUM> that forms a portion of an edge of the mounting hole <NUM>. The guide rib <NUM> may be coupled to the guide protrusion <NUM> of the cover fixer <NUM> as the cover fixer <NUM> is slidably coupled to the cover <NUM>. The guide rib <NUM> may form a narrower portion of the mounting hole <NUM>. A portion of the guide protrusion <NUM> may be inserted into a wider portion of the mounting holes <NUM>, and slide downward to be coupled to the guide rib <NUM>. The guide rib <NUM> may be provided to correspond to the guide protrusion <NUM>.

The cover body <NUM> may include an auxiliary hole <NUM> formed at one side of the mounting hole <NUM>. The auxiliary hole <NUM> may be provided to be coupled to an auxiliary protrusion <NUM> of the cover fixer <NUM>. As the cover fixer <NUM> is slidably coupled to the cover <NUM>, the auxiliary protrusion <NUM> is slid into the auxiliary hole <NUM> and insertedly fixed thereto.

The cover fixer <NUM> may include the fixer body <NUM> and the accommodation space <NUM> formed in the fixer body <NUM>. The accommodation space <NUM> may be provided as a recess formed in a direction of the lower rear side of the fixer body <NUM>. The accommodation space <NUM> may be formed to accommodate the hook <NUM> of the second fixer <NUM>.

The cover fixer <NUM> may include the guide protrusion <NUM> and the auxiliary protrusion <NUM> to be fixed to the cover body <NUM>. The guide protrusion <NUM> may protrude to be coupled to the guide rib <NUM>. The auxiliary protrusion <NUM> may protrude to be inserted into the auxiliary hole <NUM>. The guide protrusion <NUM> and the auxiliary protrusion <NUM> may extend along a plane on which the cover fixer <NUM> is slid. The guide protrusion <NUM> may be disposed on the left and right and/or the lower side of the accommodation space <NUM>.

The cover fixer <NUM> may include a stopper <NUM> that is caught by the mounting hole <NUM> when the cover fixer <NUM> is mounted to the cover <NUM>, to prevent the cover fixer <NUM> from being separated. In detail, referring to <FIG>, the stopper <NUM> may extend to have at least one portion that passes through the mounting hole <NUM> when the cover fixer <NUM> is mounted to the cover body <NUM>. The stopper <NUM> is provided such that an end portion of the cover fixer <NUM> is caught and interfere with the edge of the mounting hole <NUM> when the cover fixer <NUM> is mounted to the cover body <NUM>, and serves to fix the cover fixer <NUM> without being separated from the cover body <NUM> unless receiving a force greater than a predetermined magnitude. The stopper <NUM> may include a material having a predetermined elasticity such that the cover fixer <NUM> is separated from the cover body <NUM>.

Referring to <FIG> and <FIG>, the cover fixer <NUM> may include a fixer cap <NUM> that covers a cover opening <NUM> of the accommodation space <NUM>. In detail, when the cover fixer <NUM> is injection molded, the accommodation space <NUM> is formed to have both ends thereof open by the manufacturing process. The cover fixer <NUM> may be coupled to the second fixer <NUM> through an opening formed at one of the both open ends of the accommodation space <NUM>. The cover opening <NUM>, which is formed at the other open end opposite to the opening coupled to the second fixer <NUM>, of the accommodation space <NUM> may be covered by the fixer cap <NUM>. The fixer cap <NUM> may be detachably mounted to the fixer body <NUM>. As the fixer cap <NUM> closes the cover opening <NUM>, the heat insulating material may not be discharged to the outside through the accommodation space <NUM> when the heat insulating material is filled in the door body <NUM>.

In detail, referring to <FIG> and <FIG>, the cover fixer <NUM> may be inserted into the mounting hole <NUM> at a position where the guide protrusion <NUM> is not interfered by the guide rib <NUM>. At this time, the auxiliary protrusion <NUM> is not inserted into the auxiliary hole <NUM>. Thereafter, when the cover fixer <NUM> is lowered along the guide bead <NUM>, the guide protrusion <NUM> is coupled and fixed to the guide rib <NUM>, and the auxiliary protrusion <NUM> is inserted and fixed to the auxiliary hole <NUM>.

With such a configuration, the cover fixer <NUM> may be easily coupled to and separated from the cover body <NUM>. In addition, such a coupling structure may apply a relatively small load to the cover body <NUM>, thereby improving the durability of the cover body <NUM> and minimizing the deformation of the cover body <NUM>.

<FIG> is a view illustrating a rear surface of a cover according to another embodiment of the disclosure. <FIG> illustrates a cross-sectional view taken along line D-D 'shown in <FIG>.

Referring to <FIG> and <FIG>, a cover <NUM> according to another embodiment of the disclosure will be described. However, in the following description, parts identical to those of the previous embodiment shown in <FIG> will be assigned the same reference numerals, and omitted in order to redundancy.

Referring to <FIG>, a cover fixer <NUM> may be coupled to a cover body <NUM> of a cover <NUM> in a different manner from that of the embodiment shown in <FIG> and <FIG>.

The cover body <NUM> of the cover <NUM> may include a mounting hole <NUM> and a mounting protrusion <NUM> extending rearward from an edge of the mounting hole <NUM>. The mounting protrusion <NUM> may include a mounting bead 248a that is coupled to a coupling protrusion <NUM> of a cover fixer <NUM> when the cover fixer <NUM> is fixed to the cover body <NUM>.

In detail, referring to <FIG>, the cover fixer <NUM> is aligned such that an accommodation space <NUM> faces the mounting hole <NUM>, and then is mounted to the cover body <NUM>, so that the coupling protrusion <NUM> of the cover fixer <NUM> is coupled to the mounting protrusion <NUM> of the cover body <NUM>. The coupling protrusion <NUM> and/or the mounting protrusion <NUM> may include a material having elasticity. The coupling protrusion <NUM> and/or the mounting protrusion <NUM> are deformed and the coupling protrusion <NUM> is coupled to the mounting protrusion <NUM>.

<FIG> illustrates a cross-sectional view taken along line E-E 'shown in <FIG>, which shows an operation of a door panel being coupled to a door body. <FIG> is an enlarged view illustrating portion F shown in <FIG>. <FIG> is an enlarged view illustrating portion G shown in <FIG>.

Hereinafter, a process of coupling the door panel <NUM> to the door body <NUM> will be described with reference to <FIG>. First, the door panel <NUM> is aligned by inserting the lowermost second fixer <NUM> into the lowermost cover fixer <NUM> of the door body <NUM> and then coupling the remaining fixers <NUM> and <NUM> to the upper door cap <NUM> and the cover fixer <NUM>, so that the door panel <NUM> is mounted to the door body <NUM>.

Referring to <FIG> and <FIG>, when the door panel <NUM> is coupled to the door body <NUM>, the second fixer <NUM> may be coupled to the cover fixer <NUM> coupled to the cover <NUM>.

In detail, the hook <NUM> of the second fixer <NUM> may be coupled to the accommodation space <NUM> of the cover fixer <NUM> by moving from the front upper side to the lower rear side. The movement of the hook <NUM> may be guided by guide surfaces 181a and 181b formed on the inner surface of the accommodation space <NUM>. In detail, the coupling guide part 168a of the hook <NUM> may be guided into the accommodation space <NUM> by the first guide surface 181a and the second guide surface 181b. Since the coupling guide part 168a of the hook <NUM> has a slope in a direction the hook <NUM> is coupled to the accommodation space <NUM>, the hook <NUM> may be easily inserted into the accommodation space <NUM>.

Referring to <FIG> and <FIG>, when the door panel <NUM> is coupled to the door body <NUM>, a portion of the first fixer <NUM> is inserted into the coupling groove <NUM> formed in the upper door cap <NUM>.

In detail, when a portion of the first fixer <NUM> is inserted into the coupling groove <NUM>, the locking protrusion <NUM> of the first fixer <NUM> may be inserted into and fixed to the frame accommodation groove 132b. The first fastening member <NUM> is moved into the coupling groove <NUM> through the through hole <NUM>, and then is screwed to the fixing hole <NUM> of the first fixer <NUM> and the cap hole 132a of the upper door cap <NUM>. As such, the first fixer <NUM> is fixed to the upper door cap <NUM>, so that the door panel <NUM> is coupled to the door body <NUM>. The through hole <NUM> may be covered by the first cap cover <NUM>.

<FIG> is a view illustrating a second door shown in <FIG>. <FIG> illustrates an enlarged cross-sectional view taken along line H-H 'shown in <FIG>. <FIG> illustrates an enlarged cross-sectional view taken along line I-I ' of in <FIG>.

Referring to <FIG>, a configuration applied to the second door <NUM> will be described. Hereinafter, for the sake of convenience in description, one second door <NUM> will be described, and descriptions of the remaining second door <NUM> will be omitted. However, the configuration of the second door <NUM>, which is not described, may be substantially the same except that the second door <NUM> is provided in mirror symmetry with the second door <NUM> described below. In addition, the same configuration as that of the second door <NUM> may be applied to the first door <NUM>, and detailed description thereof may be omitted.

Referring to <FIG>, the second door <NUM> includes a door panel <NUM> that is provided to be replaceable, and the door panel <NUM> has a panel body <NUM>.

The second door <NUM> includes an upper door cap <NUM> in which a second door handle <NUM> is formed. The second door handle <NUM> is provided as a recess formed in a second cap body <NUM>.

The upper door cap <NUM>, a lower door cap <NUM>, and a chassis <NUM> may form a door frame, and a case <NUM> may be disposed on a rear surface of the door frame.

Referring to <FIG>, as the second door handle <NUM> is formed in the upper door cap <NUM> of the second door <NUM>, a structure for fixing a first fixer <NUM> to the upper door cap <NUM> may be different the fixing structure of the first door <NUM> described with reference to <FIG>.

The first fixer <NUM> includes a first fixing body <NUM> having a bent portion 362a that is inserted into a coupling groove <NUM> of the upper door cap <NUM>. A through hole <NUM> is formed through a bottom surface of the second door handle <NUM>. A third fastening member <NUM> is moved into the coupling groove <NUM> through the through hole <NUM>, and then is screwed to a fixing hole <NUM> and a cap hole 332a. The through hole <NUM> may be covered by a second cap cover <NUM>.

Since the second door <NUM> has the through hole <NUM>, which is used for the fastening of the third fastening member <NUM>, in the bottom surface of the second door handle <NUM>, the through hole <NUM> may be prevented from being exposed to the user.

Referring to <FIG>, the lower door cap <NUM> of the second door <NUM> may include a structure for discharging condensate that may be generated in a space formed between the door panel <NUM> and a cover <NUM>.

In detail, the lower door cap <NUM> of the second door <NUM> may include a drainage hole <NUM> for discharging condensate formed between the door panel <NUM> and the cover <NUM>. The drainage hole <NUM> may communicate the space between the door panel <NUM> and the cover <NUM> with the outside of the second door <NUM>. The drainage hole <NUM> may pass through the lower door cap <NUM> in the vertical direction.

In addition, the lower door cap <NUM> may include a drainage guide part <NUM>. A front end of the lower door cap <NUM> and a lower end of the door panel <NUM> may be spaced apart from each other to form a gap <NUM>. The drainage guide part <NUM> may be formed to slope downward as being directed from the rear side of the lower door cap <NUM> to the front side. The drainage guide part <NUM> and the gap <NUM> may allow a condensate, which is not discharged from the drainage hole <NUM>, to be discharged.

In addition, air may be circulated through the gap <NUM> in the space between the door panel <NUM> and the cover <NUM>.

<FIG> is an exploded view illustrating a first door having a door panel according to another embodiment of the disclosure.

Referring to <FIG>, a door panel <NUM> according to another embodiment of the disclosure will be described. In the following description, details of parts identical to those of the first door <NUM> shown in <FIG> will be omitted. In addition, the door panel <NUM> illustrated in <FIG> may be applied to the second door <NUM> illustrated in <FIG>.

Similar to the door panel <NUM> shown in <FIG>, the door panel <NUM> may be detachably coupled to the door body <NUM>. The door panel <NUM> may include a panel body <NUM>, an edge cover <NUM>, a buffer member <NUM>, a sealing member <NUM>, and a fixing member <NUM>.

The panel body <NUM> may form the external appearance of the door <NUM>. The panel body <NUM> may have a flat plate shape. On the front surface of the panel body <NUM>, a variety of designs may be formed to meet the needs of the user. The panel body <NUM> may include glass. First and second fixers <NUM> and <NUM> may be disposed on the rear surface of the panel body <NUM> to be coupled to the door body <NUM>.

The edge cover <NUM> may be disposed at an upper end of the rear surface of the panel body <NUM>. The edge cover <NUM> may be formed to cover at least a portion of an upper edge of the panel body <NUM>. The edge cover <NUM> may be integrally formed with the panel body <NUM>, and may be detachably provided from the panel body <NUM>.

The buffer member <NUM> may be disposed on the rear surface of the panel body <NUM>. The buffer member <NUM> may be disposed in a space formed between the door panel <NUM> and the cover <NUM>. The buffer member <NUM> may be disposed between a plurality of second fixers <NUM>. The buffer member <NUM> may be configured to prevent the shock from being transmitted to the cover <NUM> when an impact is applied to the door panel <NUM>. In addition, the buffer member <NUM> may be configured to absorb noise that may occur in the door panel <NUM>. The buffer member <NUM> may include expanded polystyrene.

The first fixer <NUM> may be mounted on the rear surface of the panel body <NUM>. The second fixer <NUM> may be mounted on the rear surface of the panel body <NUM>. The first fixer <NUM> may be provided in a pair thereof at an upper end portion of the rear surface of the panel body <NUM>. The second fixer <NUM> may be provided in a plurality units thereof on the rear surface of the panel body <NUM>. The first fixer <NUM> and the second fixer <NUM> may allow the door panel <NUM> to be firmly coupled to and easily separated from the door body <NUM>.

The sealing member <NUM> may be disposed along the circumference of the second fixer <NUM>. The sealing member <NUM> may include a material having heat insulation. The sealing member <NUM> may be provided to prevent dew from forming on a portion of the panel body <NUM> on which the second fixer <NUM> is disposed and/or on a portion of the cover <NUM> on which the cover fixer <NUM> is disposed. The sealing member <NUM> may be aligned with the lower end of the second fixer <NUM> and then attached to the panel body <NUM>.

The fixing member <NUM> may be disposed along a portion of the circumference of the panel body <NUM>. The fixing member <NUM> may be disposed at the left and right end portions and the lower end portion of the panel body <NUM>. The fixing member <NUM> may be fixed to the panel body <NUM> by a double-sided tape. The fixing member <NUM> may allow the door panel <NUM> to be more firmly fixed to the door body <NUM> after the door panel <NUM> is coupled to the door body <NUM>.

The fixing member <NUM> may include a magnetic body. The fixing member <NUM> may be provided to generate an attraction force with respect to the cover <NUM> when the door panel <NUM> is coupled to the door body <NUM>. The cover <NUM> may include steel. As the fixing member <NUM> is fixed to the cover <NUM> while in contact therewith by the attraction force between the fixing member <NUM> and the cover <NUM>, the door panel <NUM> may be more stably fixed to the door body <NUM>.

The fixing members <NUM> disposed at the left and right end portions of the panel body <NUM> may extend in the vertical direction along the left and right side edges of the panel body <NUM>. The fixing members <NUM> disposed at the left and right end portions of the panel body <NUM> may be spaced apart from the left and right side ends of the panel body <NUM> by a predetermined interval. Upper end portions of the fixing members <NUM> disposed at the left and right side end portions of the panel body <NUM> may be disposed to come into close contact with the lower end of the edge cover <NUM>.

The fixing member <NUM> disposed at the lower end portion of the panel body <NUM> may extend in the horizontal direction along the lower edge of the panel body <NUM>, and may be arranged at an approximately center portion of the lower end portion of the panel body <NUM>. The fixing member <NUM> disposed at the lower end portion of the panel body <NUM> may be spaced apart from the lower end of the panel body <NUM> by a predetermined interval.

<FIG> is an exploded view illustrating a first door having a door panel according to still another embodiment of the disclosure.

Referring to <FIG>, a door panel <NUM> according to still another embodiment of the disclosure will be described. In the following description, details of parts identical to those of the door <NUM> shown in <FIG> may be omitted in order to redundancy. In addition, the door panel <NUM> illustrated in <FIG> may be applied to the second door <NUM> illustrated in <FIG>.

Similar to the door panel <NUM> shown in <FIG>, the door panel <NUM> may be detachably coupled to the door body <NUM>. The door panel <NUM> may include a panel body <NUM>, an edge cover <NUM>, a buffer member <NUM>, and a fixing member <NUM>.

The panel body <NUM> may form the external appearance of the door <NUM>. The panel body <NUM> may have a flat plate shape. On the front surface of the panel body <NUM>, a variety of designs may be formed to meet the needs of the user. The panel body <NUM> may include steel. First and second fixers <NUM> and <NUM> may be disposed on the rear surface of the panel body <NUM> so as to be coupled to the door body <NUM>.

The edge cover <NUM> may be disposed at an upper end portion of the rear surface of the panel body <NUM>. The edge cover <NUM> may be formed to cover at least a portion of an upper edge of the panel body <NUM>. The edge cover <NUM> may be integrally formed with the panel body <NUM>, and may be detachably provided from the panel body <NUM>.

The buffer member <NUM> may be disposed on the rear surface of the panel body <NUM>. The buffer member <NUM> may be disposed in a space formed between the door panel <NUM> and the cover <NUM>. The buffer member <NUM> may be disposed between the first fixer <NUM> and the second fixer <NUM>. The buffer member <NUM> may be configured to prevent the shock from being transmitted to the cover <NUM> when an impact is applied to the door panel <NUM>. In addition, the buffer member <NUM> may be configured to absorb noise that may occur in the door panel <NUM>. The buffer member <NUM> may include expanded polystyrene.

The first fixer <NUM> may be mounted on the rear surface of the panel body <NUM>. The first fixer <NUM> may be provided in a pair thereof at an upper end portion of the rear surface of the panel body <NUM>. The first fixer <NUM> may be integrally formed with the edge cover <NUM>.

The second fixer <NUM> may be mounted on the rear surface of the panel body <NUM>. The second fixer <NUM> may be provided in a pair thereof at the lower end portion of the rear surface of the panel body <NUM>.

The first fixer <NUM> and the second fixer <NUM> may allow the door panel <NUM> to be firmly coupled to and easily separated from the door body <NUM>.

The fixing member <NUM> may be disposed along the circumference of the panel body <NUM>. The fixing member <NUM> may be disposed at each edge of the panel body <NUM>. The fixing member <NUM> may be fixed to the panel body <NUM> by a double-sided tape. The fixing member <NUM> may allow the door panel <NUM> to be more firmly fixed to the door body <NUM> when the door panel <NUM> is coupled to the door body <NUM>.

The fixing member <NUM> may include a magnetic body. The fixing member <NUM> may be provided to generate an attraction force with respect to the cover <NUM> when the door panel <NUM> is coupled to the door body <NUM>. The cover <NUM> may include steel. As the fixing member <NUM> is fixed to the cover <NUM> while in contact with thereto by the attraction force between the fixing member <NUM> and the cover <NUM>, the door panel <NUM> may be more stably fixed to the door body <NUM>.

The fixing members <NUM> disposed at the left and right end portions of the panel body <NUM> may extend in the vertical direction along the left and right side edges of the panel body <NUM>. The fixing members <NUM> disposed at the left and right end portions of the panel body <NUM> may be disposed to be spaced apart from the left and right ends of the panel body <NUM> by a predetermined interval. Upper end portions of the fixing members <NUM> disposed at the left and right end portions of the panel body <NUM> may be disposed to come into close contact with the lower end of the edge cover <NUM>.

The fixing member <NUM> disposed at the upper end portion of the panel body <NUM> may extend in the horizontal direction along the upper edge of the panel body <NUM>, and may be discontinuously provided so as not to overlap the first fixer <NUM>. The fixing member <NUM> disposed at the upper end portion of the panel body <NUM> may be disposed to come into close contact with the lower end of the edge cover <NUM>. The fixing member <NUM> disposed at the upper end portion of the panel body <NUM> may be disposed to come into close contact with the lower end of the first fixer <NUM> that is integrally formed with the edge cover <NUM>.

The fixing member <NUM> disposed at the lower end portion of the panel body <NUM> may extend in the horizontal direction along the lower edge of the panel body <NUM>. The fixing member <NUM> disposed at the lower end portion of the panel body <NUM> may be disposed to be spaced apart from the lower end of the panel body <NUM> by a predetermined interval.

<FIG> is a view illustrating a rear surface of a door panel according to still another embodiment of the disclosure.

Referring to <FIG>, a door panel <NUM> according to still another embodiment of the disclosure will be described. The door panel <NUM> illustrated in <FIG> may be applied to the first door <NUM> or the second door <NUM> illustrated in <FIG>.

Referring to <FIG>, the door panel <NUM> according to the embodiment of the disclosure may omit the edge cover <NUM>, different from the door panel <NUM> illustrated in <FIG>. The first fixer <NUM> may be provided in a pair thereof as an integral body, and the pair of first fixers <NUM> may be spaced apart from the upper end of the panel body <NUM> by a predetermined interval. The door panel <NUM> may be applied to the second door <NUM> shown in <FIG> and <FIG>.

In detail, the panel body <NUM> may form the external appearance of the door <NUM>. The panel body <NUM> may have a flat plate shape. On the front surface of the panel body <NUM>, a variety of designs may be formed to meet the needs of the user. The panel body <NUM> may include steel. First and second fixers <NUM> and <NUM> may be disposed on the rear surface of the panel body <NUM> to be coupled to the door body <NUM>.

The first fixer <NUM> may be mounted on the rear surface of the panel body <NUM>. The second fixer <NUM> may be mounted on the rear surface of the panel body <NUM>. The first fixer <NUM> and the second fixer <NUM> may allow the door panel <NUM> to be firmly coupled to and easily separated from the door body <NUM>.

A fixing member <NUM> may be disposed along the circumference of the panel body <NUM>. The fixing member <NUM> may be disposed at each edge of the panel body <NUM>. The fixing member <NUM> may be fixed to the panel body <NUM> by a double-sided tape. The fixing member <NUM> may allow the door panel <NUM> to be more firmly fixed to the door body <NUM> when the door panel <NUM> is coupled to the door body <NUM>.

The fixing members <NUM> disposed at the left and right end portions of the panel body <NUM> may extend in the vertical direction along the left and right side edges of the panel body <NUM>. The fixing members <NUM> disposed at the left and right end portions of the panel body <NUM> may be disposed to be spaced apart from the left and right ends of the panel body <NUM> by a predetermined interval. Upper end portions of the fixing members <NUM> disposed at the left and right end portions of the panel body <NUM> may be disposed to come into close contact with a lower end of an edge cover <NUM>.

The fixing member <NUM> disposed at the upper end portion of the panel body <NUM> may extend in the horizontal direction along the upper edge of the panel body <NUM>. The fixing member <NUM> disposed at the upper end portion of the panel body <NUM> may be disposed to come into close contact with the upper end of the first fixer <NUM>. The fixing member <NUM> disposed at the upper end portion of the panel body <NUM> may be disposed between a gap between the upper end of the panel body <NUM> and the first fixer <NUM>.

Claim 1:
A refrigerator comprising:
a main body (<NUM>); and
a door (<NUM>) configured to open and close a front side of the main body,
wherein the door includes:
a door body (<NUM>) including
chassis (<NUM>, <NUM>) forming opposite side surfaces of the door,
a lower door cap (<NUM>) coupled to a lower portion of the chassis (<NUM>, <NUM>), and
an upper door cap (<NUM>), coupled to an upper portion of the chassis (<NUM>, <NUM>), including a coupling groove (<NUM>) at a front face of the upper door cap (<NUM>) and a through hole (<NUM>) formed on an upper side of the upper door cap (<NUM>),
a door panel (<NUM>) separably mounted on the door body, and provided with a protrusion (<NUM>) on a rear surface of the door panel (<NUM>) and that has a fixing hole (<NUM>) formed therein, and
a fastening member (<NUM>),
wherein, when the door panel (<NUM>) is mounted on the door body,
the protrusion (<NUM>) is inserted into the coupling groove (<NUM>), the fastening member (<NUM>) is inserted into the coupling groove (<NUM>) through the through hole (<NUM>) and is screwed to the fixing hole (<NUM>) of the protrusion (<NUM> ) and a cap hole (132a) of the upper door cap (<NUM>) to fix the door panel to the door body, and opposite end portions of the door panel are supported by the chassis,
wherein the door body (<NUM>) includes a cover (<NUM>) arranged to face the door panel, and
the chassis (<NUM>, <NUM>) protrude forward than the cover (<NUM>).