JP2016118313A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator which enables easy attachment and detachment of a duct member and improvement of the airtightness in an air channel.SOLUTION: The refrigerator includes: a duct member 30 provided on a front surface of an inner box 2b and forming a supply air channel 15 with the inner box 2b; a duct cover 20 provided on a front surface of the duct member 30 and covering the duct member 30; and engagement receiving members 40 which are fixed to the inner box 2b and engaged with the duct cover 20. Attachment holes 46 for attaching the engagement receiving members 40 to left and right outer sides of the duct member 30 are formed in the inner box 2b. The engagement receiving members 40 engage with engagement parts 25 formed in the duct cover 20. The structure allows the duct cover 20 and the duct member 30 to be easily attached or detached. Further, the structure inhibits a gap from occurring between the duct member 30 and the inner box 2b to improve the airtightness of the supply air channel 15.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a refrigerator that stores food or the like in a storage room in a cold state, and particularly relates to a refrigerator that has a supply air passage for supplying air cooled by a cooler to a storage room.

  Conventionally, a supply air passage for supplying air cooled by a cooler to a storage room is composed of an inner box constituting a heat insulating box body of a refrigerator, and a duct member provided in the inner box (on the storage room side). A refrigerator formed between them is known (for example, Patent Document 1 and Patent Document 2).

  The refrigerator disclosed in Patent Document 1 includes a refrigerating room duct including a refrigerating room back panel and a foam heat insulating material inside the refrigerating room. The foam heat insulating material is formed with a foam heat insulating material convex portion that forms a cold air passage, and the refrigerator compartment duct is attached to the inner box using a push rivet and a grommet trivet. Thereby, a foam heat insulating material convex part is pressed on the inner surface of an inner box, and a cold air | gas channel | path is formed between a foam heat insulating material and an inner box.

  Moreover, the refrigerator disclosed in Patent Document 2 includes an inner box having a pair of grooves that open inward, an air path forming body that is attached to the inner side of the inner box and forms an air path that guides cold air, and Is provided. Insertion portions projecting toward the inner box are formed on both the left and right sides of the air passage forming body, and the insertion portions are fitted into the groove portions of the inner box. Thereby, an air path is formed between the inner box and the air path forming body.

JP 2008-2732 A (page 6-7, FIG. 4) JP 2010-7870 A (6th page, FIG. 4)

  However, in the refrigerator of the prior art, there was a point that should be further improved in terms of facilitating attachment and detachment of the duct member forming the cold air supply air passage and enhancing the sealing performance of the air supply passage.

  Specifically, when the refrigerator compartment duct is fixed to the inner box with a rivet or the like as in the refrigerator disclosed in Patent Document 1, the refrigerator compartment duct is pressed against the inner box in the vicinity of the rivet or the like, that is, with the rivet or the like. The sealed portion can ensure sealing performance. However, the portion away from the rivet or the like has a problem that the sealing performance is lower than the vicinity of the rivet or the like because the pressing force to the inner box becomes weak.

  In particular, in the case of a long duct member, a rivet or the like may not be attached to an intermediate portion in the vertical direction due to design restrictions. In such a case, even if the upper and lower portions of the duct member are stopped with rivets or the like, a gap is likely to be generated between the duct member and the inner box at the intermediate portion. Therefore, the cold air in the supply air passage leaks through the gap. Further, when the number of fixing points by rivets or the like is increased, the number of parts increases and the assembly of the supply air passage becomes complicated.

  Moreover, like the refrigerator disclosed in Patent Document 2, when inserting the fitting portion formed in the air passage formation body into the groove portion formed in the inner box and fixing the air passage formation body to the inner box, There was a problem that it was difficult to mold the inner box.

  That is, in order to fix the air passage formation body to the inner box, a protrusion is formed in the fitting portion of the air passage formation body, and a groove formed in the inner box is used to engage the protrusion. It was necessary to form protrusions. That is, the groove portion of the inner box needs to be formed in an undercut shape, and the processing is difficult.

  Further, in forming the heat insulating box, the inner box is easily pushed and deformed by the foamed heat insulating material, so it is difficult to maintain high dimensional accuracy of the inner box. If the dimensional accuracy of the inner box is low, it becomes difficult to assemble the air path forming body and the inner box, and a gap is generated between the two, resulting in poor sealing of the supply air path.

  Moreover, like the refrigerator disclosed by patent document 2, when forming an insertion part in the duct which consists of a polystyrene foam which comprises an air path formation body, the intensity | strength of an insertion part is weak and it is easy to damage. Therefore, there is a possibility that the fitting portion may be damaged when removing the air passage formation body, and it is difficult to remove the air passage formation body.

  This invention is made | formed in view of said situation, and it aims at providing the refrigerator which can perform attachment and removal of a duct member easily, and can improve the airtightness of an air path. .

  The refrigerator of the present invention is provided with a heat insulating material between the outer box and the inner box so that the front is opened, and the air box is formed between the inner box and the front surface of the inner box. A duct member provided on a front surface of the duct member and covering the duct member; and an engagement receiving member fixed to the inner box and engaged with the duct cover. Mounting holes for attaching the engagement receiving member are formed on the left and right outer sides of the duct member, and the engagement receiving member protrudes forward from the base and a base that contacts the back surface of the inner box. An engagement receiving portion that is inserted through the mounting hole; and a projection that protrudes outward from the engagement receiving portion in the left-right direction, and the duct cover includes engagement portions on the left and right sides thereof. And the engaging portion has a claw portion projecting inward in the left-right direction, Characterized by engaging from the outside in the lateral direction with respect to engagement receiving member.

  Moreover, the refrigerator of the present invention is characterized in that the inner box is formed with a convex portion extending in the vertical direction along the left and right outer sides of the duct member.

  The refrigerator according to the present invention is characterized in that the convex portion is formed outside the engagement receiving member.

  In the refrigerator of the present invention, the duct cover is provided with a guide portion that protrudes rearward and extends in the vertical direction along the left and right outer sides of the duct member. It is formed in a guide part.

  The refrigerator of the present invention includes an attachment member that fixes the duct cover and the inner box, and the duct cover is fixed to the inner box by the attachment member at an upper portion and a lower portion thereof, and the engagement member The joint portion is formed below the upper mounting member and above the lower mounting member.

  The refrigerator of the present invention is characterized in that a space that allows elastic deformation of the vicinity of the end of the duct cover to the left and right outer sides is formed on the left and right outer sides of the duct cover.

  The refrigerator of the present invention is characterized in that the engagement between the engagement portion and the engagement receiving portion is released by elastically deforming the vicinity of the left and right end portions of the duct cover outward.

  According to the refrigerator of the present invention, the attachment hole for attaching the engagement receiving member to the inner box is formed. The engagement receiving member is inserted into the mounting hole from the back surface of the inner box, and forms an engagement receiving portion for engaging with the engagement portion of the duct cover inside the inner box. This eliminates the need to form an undercut groove or the like for attaching the duct cover to the inner box, thereby simplifying the shape of the inner box and facilitating the molding of the inner box. Further, the engagement receiving member can be fixed easily and with high strength.

  Further, by engaging the engaging portion and the engagement receiving member, it is possible to suppress the generation of a gap between the duct member and the inner box, and to improve the sealing performance of the supply air passage. Further, by providing the engaging portion and the engaging receiving portion on the left and right sides of the duct member, the pressing force between the duct member and the inner box can be increased on the left and right sides of the duct member, and high sealing performance can be exhibited.

  Further, the claw portion of the engaging portion of the duct cover protrudes toward the inside, and the protrusion formed on the engagement receiving portion protrudes toward the outside. Thus, when removing the duct cover, the duct cover can be widened to the left and right to release the engagement between the engaging portion and the engagement receiving member, and the duct cover can be easily removed. Further, when removing, since an excessive force does not act on the claw portion of the duct cover, the claw portion can be prevented from being damaged.

  Moreover, according to the refrigerator of this invention, the convex part extended in the up-down direction along the left-right outer side of a duct member is provided inside the inner box. Thereby, when attaching a duct member and a duct cover, positioning of a duct member or a duct cover becomes easy.

  Moreover, according to the refrigerator of this invention, the convex part is formed in the outer side of the attachment hole which attaches an engagement receiving member. Thereby, the engaging part of a duct cover will be inserted inside a convex part, and it will be guided by a convex part and positioning of a duct cover will become easy. Moreover, since the excessive displacement of the engaging part is regulated by the convex part, it is possible to prevent the engagement part and the engagement receiving part from being disengaged.

  Moreover, according to the refrigerator of this invention, the guide part for fixing a duct member is formed inside a duct cover. Thereby, positioning of a duct member becomes easy. Further, by forming the engaging portion in the guide portion, positioning and attachment of the duct cover and the duct member are facilitated.

  Further, according to the refrigerator of the present invention, the vicinity of the upper portion and the lower portion of the duct cover are fixed by the attachment members (screws or the like), and the substantially intermediate portion in the vertical direction is engaged by the engaging portion and the engaging receiving portion. Thereby, even if the number of attachment members (screws etc.) is small, high sealing performance can be exhibited. In addition, the number of parts can be reduced to facilitate installation. Moreover, since the number of attachment members is small, the design is improved.

  Further, according to the refrigerator of the present invention, a space that allows the vicinity of the end of the duct cover to be elastically deformed to the left and right outside is formed on the left and right outside of the duct cover. Thereby, the space for the operation | work which expands the edge part of a duct cover to right and left is ensured, and the removal of a duct cover becomes easy.

  Further, according to the refrigerator of the present invention, the engagement between the engagement portion and the engagement receiving portion is released by elastically deforming the vicinity of the left and right end portions of the duct cover outward. Therefore, the duct cover can be easily removed.

It is a front external view of the refrigerator which concerns on embodiment of this invention. It is right side sectional drawing which shows schematic structure of the refrigerator which concerns on embodiment of this invention. It is a front view which shows the state which removed the heat insulation door of the refrigerator compartment of the refrigerator which concerns on embodiment of this invention. It is a horizontal sectional view (the AA line sectional view shown in Drawing 3) of the refrigerator compartment of the refrigerator concerning the embodiment of the present invention. It is a disassembled perspective view which shows schematic structure of the refrigerator compartment supply air path of the refrigerator which concerns on embodiment of this invention. It is a disassembled perspective view which shows the duct cover and duct member of the refrigerator which concern on embodiment of this invention. The horizontal cross-sectional view (B section enlarged view shown in FIG. 4) which expanded the (A) refrigerator compartment supply air path part of the refrigerator which concerns on embodiment of this invention, (B) The horizontal cross section which expands and shows the vicinity of an engaging part It is a figure (C section enlarged view shown to FIG. 7 (A)). It is an expansion perspective view which shows the vicinity of the engaging part of the refrigerator which concerns on embodiment of this invention. It is a back surface disassembled perspective view which shows the inner case and engagement receiving member of the refrigerator which concern on embodiment of this invention.

  Hereinafter, the refrigerator which concerns on embodiment of this invention is demonstrated in detail based on drawing.

  FIG. 1 is a front external view showing a schematic structure of the refrigerator 1 according to the present embodiment. FIG. 2 is a right sectional view of the refrigerator 1. In addition, in FIG. 2, the flow of the cold air which circulates in the store | warehouse | chamber is shown with the solid line arrow.

  As shown in FIG. 1, the refrigerator 1 includes a heat insulating box 2 and forms a storage room for storing food and the like inside the heat insulating box 2. The interior of the storage room is divided into a plurality of storage rooms 3 to 7 according to storage temperature and usage. The uppermost stage is the refrigerator compartment 3, the lower left side is the ice making room 4, the right side is the upper freezer room 5, the lower stage is the lower stage freezer room 6, and the lowermost stage is the vegetable room 7. The ice making chamber 4, the upper freezing chamber 5, and the lower freezing chamber 6 are all storage chambers in the freezing temperature range, and in the following description, these are collectively referred to as freezing chambers 4 to 6 as appropriate.

  The front surface of the heat insulation box 2 is opened, and heat insulation doors 8 to 12 are provided in the openings corresponding to the storage chambers 3 to 7 so as to be opened and closed, respectively. The heat insulating doors 8a and 8b divide and block the front surface of the refrigerator compartment 3, and the left upper and lower parts of the heat insulating door 8a and the upper right lower part of the heat insulating door 8b are rotatably supported by the heat insulating box 2. Moreover, the heat insulation doors 9-12 are supported by the heat insulation box 2 so that it can be pulled out to the front of the refrigerator 1.

  As shown in FIG. 2, the heat insulation box 2 which is the main body of the refrigerator 1 is disposed with a steel plate outer box 2a having an opening on the front surface and a gap inside the outer box 2a. And an inner box 2b made of synthetic resin having an opening and a heat insulating material 2c made of polyurethane foam filled and foamed in a gap between the outer box 2a and the inner box 2b. Each of the heat insulating doors 8 to 12 adopts the same heat insulating structure as that of the heat insulating box 2.

  The refrigerator compartment 3 and the freezer compartments 4 to 6 located in the lower stage are partitioned by a heat insulating partition wall 55. The heat insulating partition wall 55 is a molded product of synthetic resin, and the inside thereof is filled with a heat insulating material.

  Further, the ice making chamber 4 and the upper freezing chamber 5 inside the freezing chambers 4 to 6 are partitioned by a partition wall (not shown in the drawing). The ice making chamber 4 and the upper freezing chamber 5 communicate with the lower freezing chamber 6 provided in the lower stage thereof so that cold air can flow freely. The freezer compartments 4 to 6 and the vegetable compartment 7 are partitioned by a heat insulating partition wall 56.

  In addition, a supply air passage 14 (freezer compartment supply air passage) is formed on the back side of the freezer compartments 4 to 6 by a partition member made of synthetic resin. The supply air passage 14 is an air passage through which the cool air cooled by the cooler 53 flows. In addition, a return port for returning air from the freezing chambers 4 to 6 to the cooling chamber 13 is formed in the lower back surface of the lower freezing chamber 6.

  A supply air passage 15 (refrigeration chamber supply air passage) is formed on the back surface of the refrigerator compartment 3 as an air passage for supplying the cold air cooled by the cooler 53 to the refrigerator compartment 3. The supply air passage 15 is formed between the duct member 30 and the inner box 2b, and the duct cover 20 is disposed on the front surface of the duct member 30.

  The supply air passage 14 and the supply air passage 15 communicate with each other via a damper 54 (air passage switch). The damper 54 is for controlling the flow rate of the cool air supplied to the refrigerating chamber 3 to appropriately maintain the temperature inside the refrigerating chamber 3.

  The refrigerator compartment 3 and the vegetable compartment 7 are connected by a connection air passage (not shown). Thereby, the cold air supplied to the refrigerator compartment 3 is supplied to the vegetable compartment 7 via a connection air path. Further, inside the heat insulating partition wall 56, a return air passage 16 is formed for connecting the vegetable compartment 7 and the cooling compartment 13 and returning cold air from the vegetable compartment 7 to the cooling compartment 13.

  On the further back side of the supply air passage 14 inside the inner box 2b, a cooling chamber 13 is provided by being divided by a partition. An opening 13a that connects the cooling chamber 13 and the supply air passage 14 is formed in the upper partition of the cooling chamber 13, and the opening 13a is used to supply cold air to the storage chambers 3 to 7 of the storage chamber. A blower 52 is provided. On the other hand, below the cooling chamber 13, an opening 13 b is formed for sucking the return cold air from the storage chamber into the cooling chamber 13.

  A cooler 53 (evaporator) for cooling the circulating air is disposed inside the cooling chamber 13. The cooler 53 is connected to the compressor 51, a radiator (not shown), and an expansion valve (capillary tube) (not shown) via a refrigerant pipe, and constitutes a vapor compression refrigeration cycle circuit. It is. In the refrigerator 1 according to this embodiment, isobutane (R600a) is used as the refrigerant of the refrigeration cycle.

  FIG. 3 is a front view showing a state in which the heat insulating door 8 of the refrigerator compartment 3 of the refrigerator 1 is removed. As shown in FIG. 3, a duct cover 20 is provided in the substantially central back of the refrigerator compartment 3 so as to cover the front surface of the supply air passage 15. The duct cover 20 is formed with a plurality of air outlets 21 through which cold air is blown into the refrigerator compartment 3. The cool air cooled by the cooler 53 (see FIG. 2) passes through the supply air passage 15 and is blown out from the outlet 21.

  The duct cover 20 is a member extending in the vertical direction, and the vicinity of the upper part and the vicinity of the lower part thereof are fixed to the inner box 2b by screws 39 as mounting members. A cover member or the like that covers the screw 39 so as not to be seen from the front surface may be attached to the front surface of the screw 39. Further, a fixing member or the like that is fixed to the inner box 2b by a screw 39 may be separately provided, and the duct cover 20 may be engaged with and fixed to the fixing member.

  FIG. 4 is a horizontal sectional view of the refrigerator compartment 3 of the refrigerator 1, and represents a cross section taken along line AA in FIG. 3. As shown in FIG. 4, a duct member 30 is attached to the back side of the duct cover 20. That is, the duct member 30 is disposed so as to be sandwiched between the duct cover 20 and the inner box 2b. Thereby, the supply air path 15 is formed in the back of the refrigerator compartment 3 between the duct member 30 and the inner box 2b.

  FIG. 5 is an exploded perspective view showing a schematic configuration of the supply air passage 15 of the refrigerator 1. In FIG. 5, the lower left side of the drawing is the front side of the refrigerator 1. As shown in FIG. 5, the duct member 30 is attached to the inner side (front side) of the inner box 2 b, and the duct cover 20 is attached to the front surface so as to cover the duct member 30.

  From the back surface of the inner box 2b, the engagement receiving member 40 is inserted and fixed to the inner box 2b. The duct cover 20 is engaged with the engagement receiving portion 42 of the engagement receiving member 40. Thereby, the duct cover 20 and the duct member 30 are fixed to the inner box 2b.

  Here, the duct cover 20 is a member molded from a synthetic resin such as PP (polypropylene). On the other hand, the duct member 30 is a member formed from, for example, PS (expanded polystyrene) or the like. The duct cover 20 and the duct member 30 may be formed with a shape (not shown) for mounting various sensors, wirings, etc., such as an uneven shape or a groove.

  A concave portion 34 that is recessed in the center direction of the duct member 30 is formed at the approximate center in the vertical direction of the left and right side surface portions of the duct member 30. The recess 34 is a relief structure formed so as not to interfere with the engagement receiving portion 42 of the engagement receiving member 40 that is attached from the back surface of the inner box 2b and protrudes to the inside of the inner box. Since the positions of the engagement receiving portion 42 and the recessed portion 34 correspond to each other, the positioning of the duct member 30 with respect to the inner box 2b is facilitated.

  FIG. 6 is an exploded perspective view showing the duct cover 20 and the duct member 30 of the refrigerator 1. In FIG. 6, the upper left side of the drawing is the front surface of the refrigerator 1. As shown in FIG. 6, the duct member 30 is a member that has a substantially U-shaped horizontal cross section and extends in the vertical direction. Specifically, a recess 32 is formed on the back surface of the duct member 30 with a substantially U-shaped horizontal section and extending in the vertical direction. The recess 32 serves as a supply air passage 15 through which cool air flows.

  As described above, the air outlet 21 for sending cold air to the refrigerator compartment 3 (see FIG. 2) is formed in the front surface portion 22 of the duct cover 20. In addition, a blowout hole 31 for blowing out cool air from the supply air passage 15 is formed in the front surface of the duct member 30.

  Here, the positions of the air outlet 21 of the duct cover 20 and the air outlet 31 of the duct member 30 correspond to each other. Cold air from the supply air passage 15 can be sent to the refrigerating chamber 3 through the air outlet 21 and the air outlet 31.

  An attachment hole 28 for fixing the duct cover 20 to the inner box 2b (see FIG. 5) is formed near the upper part and the lower part of the duct cover 20. That is, the duct cover 20 is fixed to the inner box 2b by screws 39 (see FIG. 3) inserted through the mounting holes 28 near the upper part and the mounting holes 28 near the lower part.

  An attachment hole 33 for fixing the duct cover 20 and the inner box 2b is formed on the right side near the lower portion of the duct member 30. The position of the mounting hole 33 corresponds to the right mounting hole 28 in the vicinity of the lower part of the duct cover 20, and the vicinity of the lower parts of the duct cover 20 and the duct member 30 by inserting screws 39 into the mounting holes 28 and 33. The right side is fixed to the inner box 2b.

  Engaging portions 25 are formed on the left and right sides of the back side of the duct cover 20. Specifically, the engaging portion 25 is formed below the attachment hole 28 near the upper portion and above the attachment hole 28 near the lower portion. The duct cover 20 is also fixed to the inner box 2b when the engaging portion 25 engages with the engaging receiving portion 42 (see FIG. 5) of the engaging receiving member 40 (see FIG. 5).

  That is, the duct cover 20 is fixed to the inner box 2b by the mounting holes 28 in the vicinity of the upper part and the lower part and the engaging part 25 in the intermediate part. Thereby, the pressing force of the duct member 30 and the inner box 2b can be increased, and the sealing performance of the supply air passage 15 can be ensured. Moreover, since a high sealing performance can be exhibited even if the number of screws 39 is small, the number of parts can be reduced and the mounting operation can be facilitated.

  The recesses 34 formed on the left and right side surfaces of the duct member 30 are formed at positions corresponding to the engaging portions 25 of the duct cover 20 (see FIG. 8). That is, the recessed part 34 and the engaging part 25 are formed in substantially the same height. Thereby, interference with the engaging part 25 and the duct member 30 is avoided, and positioning of the duct member 30 with respect to the duct cover 20 is facilitated.

  A guide portion 24 is formed inside the duct cover 20. The guide portion 24 protrudes from the vicinity of the left and right end portions of the front surface portion 22 of the duct cover 20 toward the back surface side, and extends in the vertical direction. The guide part 24 is formed so as to sandwich the duct member 30 from the left and right, and thereby the positioning of the duct member 30 is facilitated.

  In the vicinity of the upper portion and the lower portion of the guide portion 24, a fixing claw 24a that protrudes inward is formed. On the other hand, the duct member 30 is formed with claw receiving portions 35 in the vicinity of the upper and lower portions of the left and right end portions of the back surface.

  The duct member 30 assembled to the duct cover 20 is supported by the fixing claws 24a. That is, the positions of the fixed claw 24 a and the claw receiving portion 35 correspond to each other, and the duct cover 20 and the duct member 30 are fixed by engaging the fixed claw 24 a with the claw receiving portion 35. Accordingly, the duct member 30 can be prevented from falling off, and the duct cover 20 to which the duct member 30 is attached can be easily attached to the inner box 2b.

  FIG. 7A is an enlarged horizontal sectional view of the supply air passage 15 portion of the refrigerator 1, and is an enlarged view of a portion B in FIG. FIG. 7B is an enlarged horizontal sectional view showing the vicinity of the engaging portion 25, and is an enlarged view of a portion C shown in FIG. 7A.

  As shown in FIG. 7A, a seal member 38 is interposed at the contact portion between the inner box 2 b and the duct member 30. That is, the seal surface 36 which is the end surface on the back surface side of the duct member 30 having a substantially U-shaped horizontal section is in contact with the inner box 2b via the seal member 38. The seal member 38 is, for example, a foamed resin sheet material. Thereby, the sealing performance of the contact portion between the duct member 30 and the inner box 2b is enhanced, and the leakage of cold air from the supply air passage 15 is suppressed.

  The inner box 2 b is formed with a convex portion 45 that protrudes toward the front side of the refrigerator 1 and extends in the vertical direction along the left and right outer sides of the duct member 30. The convex portion 45 is formed on the left and right outer sides of the engagement receiving member 40 and is provided so as to sandwich the duct member 30 from the left and right.

  By forming the convex portion 45 on the inner box 2b, the duct cover 20 and the duct member 30 are guided by the convex portion 45 when the duct cover 20 and the duct member 30 are attached to the inner box 2b. Become.

  In addition, the duct cover 20 and the duct member 30 are guided by the convex portion 45 so that the mounting becomes easy, so that an excessive force is prevented from acting on the engaging portion 25, and the engaging portion 25 is damaged. Can be prevented.

  In addition, after the duct cover 20 and the duct member 30 are mounted, an excessive displacement of the engaging portion 25 of the duct cover 20 is restricted by the convex portion 45, so that the engagement portion 25 and the engagement receiving portion 42 The disengagement can be prevented. Moreover, since the convex part 45 is not an undercut shape, the process of an inner box is easy.

  As shown in FIG. 7B, the engagement receiving member 40 has a base 41 and an engagement receiving part 42 protruding from the base 41, and is attached from the back side of the inner box 2b. Specifically, the engagement receiving portion 42 is inserted into the mounting hole 46 formed in the inner box 2b and protrudes to the inner side of the inner box 2b.

  The base 41 of the engagement receiving member 40 abuts on the back side of the inner box 2b and is fixed from the back side with a tape (not shown). Furthermore, the base 41 is fixed by a heat insulating material 2 c that is foam-filled inside the heat insulating box 2 when the heat insulating box 2 is assembled.

  As described above, the engaging portion 25 of the duct cover 20 is engaged with the engaging receiving portion 42 of the engaging receiving member 40. Thereby, the duct cover 20 is fixed to the inner box 2b. Specifically, the engaging portion 25 of the duct cover 20 is provided with a claw portion 26 that protrudes inward in the left-right direction, and the engaging receiving portion 42 that protrudes inside the inner box 2b includes A projection 43 is formed to project outward in the left-right direction.

  Note that the protrusion 43 may be formed by forming a recess substantially in the center of the side surface of the engagement receiving portion 42 and relatively thickening the vicinity of the tip of the engagement receiving portion 42. In addition, by forming a recess 43 by forming a recess substantially at the center of the side surface of the engagement receiving portion 42, the vicinity of the upper and lower end portions of the engagement receiving portion 42 can be formed to have the same thickness as the protrusion 43. good. Thereby, the strength of the engagement receiving portion 42 can be ensured while reducing the weight of the engagement receiving member 40.

  And the duct cover 20 and the inner box 2b are fixed when the nail | claw part 26 of the engaging part 25 is hooked on the projection part 43 of the engagement receiving part 42. FIG. Thereby, the duct member 30 is pressed by the duct cover 20 to the inner box 2b side. That is, the duct member 30 is entirely pressed by the duct cover 20 and pressed against the inner box 2b. As a result, the occurrence of a gap between the sealing surface 36 of the duct member 30 and the inner box 2b is suppressed, and the sealing performance of the supply air passage 15 is improved.

  Further, the engaging portion 25 and the engagement receiving member 40 are provided on the left and right of the duct member 30. Therefore, the pressing force between the duct member 30 and the inner box 2b is increased on both the left and right sides of the duct member 30, thereby exhibiting high sealing performance.

  Further, since the engaging portion 25 has a claw portion 26 projecting inward in the left-right direction and engages with the engagement receiving member 42 from the outer side in the left-right direction, the side portion of the duct cover 20 By enlarging the vicinity of 23 to the outside, the engagement between the engagement portion 25 and the engagement receiving portion 42 can be easily released. That is, the duct cover 20 and the duct member 30 can be easily removed. Further, when the duct cover 20 is removed, an excessive force does not act on the engaging portion 25 and the claw portion 26 of the duct cover 20, so that the engaging portion 25 and the claw portion 26 are not easily damaged.

  Further, as described above, the duct cover 20 is made of a synthetic resin such as PP, for example, and the engaging portion 25 is formed on the duct cover 20. Thereby, compared with the case where an engaging part is formed in the duct member 30 shape | molded by PS etc., the intensity | strength of the engaging part 25 can be ensured high. Accordingly, the pressing force between the duct member 30 and the inner box 2b can be increased to improve the sealing performance, and the breakage of the engaging portion 25 at the time of attachment or removal can be suppressed.

  The side surface portion 23 of the duct cover 20 extends continuously from the left and right end portions of the front surface portion 22 so as to bend diagonally to the back surface side. Thereby, the convex part 45 of the inner box 2b, the engaging part 25, the engagement receiving member 40, the duct member 30, etc. can be hidden, and the design property improves.

  A slight gap 47 is provided between the left and right ends of the duct cover 20 and the inner box 2b. That is, the end portion of the side surface portion 23 of the duct cover 20 is not in contact with the inner box 2b. By providing the gap 47, when removing the duct cover 20, it is possible to insert a fingertip (toe) or a tool into the gap 47. Thereby, removal of the duct cover 20 becomes easy.

  Further, on the left and right outer sides of the duct cover 20, a space 48 that allows the vicinity of the end of the side surface portion 23 of the duct cover 20 to be elastically deformed left and right is secured. That is, a shape that interferes with the duct cover 20 is not formed on the left and right outer sides of the duct cover 20.

  Thereby, when the duct cover 20 is removed, the side surface portion 23 of the duct cover 20 can be easily expanded to the left and right. In addition, by forming the space 48, the operator can easily grasp the duct cover 20, and can easily perform the work of inserting a fingertip (toe) or a tool into the gap 47.

  Further, a space 49 that allows the engaging portion 25 to be elastically deformed to the left and right outside is secured between the engaging portion 25 and the convex portion 45. Thereby, the attachment and removal work of the duct cover 20 is facilitated.

  That is, when the duct cover 20 is attached and removed, the engaging portion 25 is guided by the convex portion 45 and is deformed so as to expand outward by the space portion 49 to the extent that it can be engaged with and disengaged from the engaging receiving portion 42. can do. Thereby, the duct cover 20 can be easily attached or detached.

  FIG. 8 is an enlarged perspective view showing the vicinity of the engaging portion 25 of the refrigerator 1. 8 shows a state in which the duct member 30 is attached to the duct cover 20. In FIG. 8, the upper right side of the drawing is the front side of the refrigerator 1.

  As shown in FIG. 8, the engaging portion 25 is formed in the guide portion 24, and a substantially V-shaped cutout portion 29 is formed in the guide portion 24 near the top and bottom of the engaging portion 25. Thereby, the engaging part 25 becomes easy to elastically deform independently of the guide part 24, and attachment and removal of the duct cover 20 become easy.

  In addition, by forming the engaging portion 25 in the guide portion 24, the duct cover 20 can be easily formed as compared with the case where the engaging portion 25 is formed separately from the guide portion 24.

  The duct cover 20 is formed with a plurality of reinforcing ribs 27 that connect between the side surface portion 23 and the guide portion 24. In particular, the reinforcing rib 27 formed in the vicinity of the engaging portion 25 increases the strength of the engaging portion 25 and increases the engaging force between the engaging portion 25 and the engagement receiving portion 42 (see FIG. 7). This has the effect of suppressing the detachment of the portion 25.

  FIG. 9 is a rear exploded perspective view showing the inner box 2 b and the engagement receiving member 40 of the refrigerator 1. In FIG. 9, the upper left side of the drawing is the front side of the refrigerator 1. As shown in FIG. 9, the inner box 2b is formed of, for example, ABS resin (acrylonitrile, butadiene, styrene copolymer resin), and the inner box 2b is formed with a mounting hole 46 for mounting the engagement receiving member 40. Is done. The mounting hole 46 is a punched hole, and its processing is easy.

  As described above, the engagement receiving member 40 includes the base portion 41 that abuts on the back surface of the inner box 2b, the engagement receiving portion 42 that is erected substantially vertically from the base portion 41 toward the front, and the engagement receiving portion 42. And a protrusion 43 (see FIG. 7) that is formed and engages the engaging portion 25 (see FIG. 8) of the duct cover 20.

  The base 41 is a portion for fixing the engagement receiving member 40 to the back surface of the inner box 2b, and has a substantially rectangular plate shape that contacts the back surface of the inner box b2. The base 41 is larger than the attachment hole 46 of the inner box 2b, and plays a role as a fastener when the engagement receiving member 40 is attached to the inner box 2b.

  The engagement receiving portion 42 protruding from the base portion 41 is inserted into the mounting hole 46 of the inner box 2b from the back side and is arranged inside the inner box 2b. Then, the base 41 of the engagement receiving member 40 is temporarily fixed with a tape or the like from the back side of the inner box. The inner box 2b and the outer box 2a (see FIG. 4) are assembled, and polyurethane as a heat insulating material 2c (see FIG. 4) is foamed between the inner box 2b and the outer box 2a. Thereby, the engagement receiving member 40 is firmly fixed.

  As mentioned above, although the refrigerator which concerns on embodiment of this invention was demonstrated, this invention is not limited to this, A various change is possible in the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Heat insulation box 2a Outer box 2b Inner box 2c Heat insulating material 3 Refrigerating room 15 Supply air path 20 Duct cover 24 Guide part 25 Engagement part 26 Claw part 30 Duct member 40 Engagement receiving member 41 Base 42 Engagement reception part 43 Projection 45 Projection 46 Mounting Hole 47 Gap 48 Space 49 Space

Claims (7)

A heat-insulating box body filled with a heat insulating material between the outer box and the inner box and opened at the front;
A duct member provided on the front surface of the inner box to form an air path between the inner box;
A duct cover provided on the front surface of the duct member and covering the duct member;
An engagement receiving member fixed to the inner box and engaged with the duct cover,
The inner box is formed with mounting holes for attaching the engagement receiving members to the left and right outer sides of the duct member,
The engagement receiving member includes a base that abuts on the back surface of the inner box, an engagement receiving part that protrudes forward from the base and is inserted into the mounting hole, and an outer side in the left-right direction from the engagement receiving part. And a projecting portion projecting toward the
The duct cover is formed with engaging portions on the left and right sides thereof,
The said engaging part has a nail | claw part protrudingly provided toward the inner side of the left-right direction, and is engaged with the said engagement receiving member from the outer side of the left-right direction.   The refrigerator according to claim 1, wherein the inner box is formed with a convex portion extending in the vertical direction along the left and right outer sides of the duct member.   The refrigerator according to claim 2, wherein the convex portion is formed outside the engagement receiving member. The duct cover is formed with a guide portion protruding rearward and extending in the vertical direction along the left and right outer sides of the duct member,
The refrigerator according to any one of claims 1 to 3, wherein the engaging portion is formed in the guide portion. An attachment member for fixing the duct cover and the inner box;
The duct cover is fixed to the inner box by the mounting member at an upper part and a lower part thereof,
The refrigerator according to any one of claims 1 to 4, wherein the engagement portion is formed below the upper attachment member and above the lower attachment member.   The space part which accept | permits the edge part vicinity of the said duct cover is elastically deformed right and left outer side is formed in the left-right outer side of the said duct cover, The any one of Claim 1 thru | or 5 characterized by the above-mentioned. Refrigerator.   The engagement between the engagement portion and the engagement receiving portion is released by elastically deforming the vicinity of the left and right end portions of the duct cover outward. The refrigerator of Claim 1.

Images