JPWO2017145691A1 - refrigerator - Google Patents

Abstract

Provided is a refrigerator capable of ensuring necessary strength and assembly workability while reducing the number of parts and the amount of material used even when the capacity of the refrigerator is increased and the number of products is increased. A bottom plate member 3 that forms the bottom outer surface of the heat insulating box 10 and a reinforcing member that extends in the front-rear direction and forms a pair at the left end and the right end of the bottom surface of the bottom plate member as viewed from the front side. Each of the reinforcing members is provided on the front side of the bottom plate member and is fixed to the front plate member, and is separated from the front side reinforcing member at the rear side. And a rear reinforcing member 7 fixed to the bottom plate member.

Description

  The present invention relates to a refrigerator, and more particularly to a refrigerator having an improved bottom structure of a heat insulating box.

  The heat insulation box of the refrigerator must be strong enough to withstand the total weight of the refrigerator itself plus the load and the load generated during transportation, and the bottom part of the heat insulation box is provided with reinforcing parts such as a pressed steel plate. The Also, in order to meet market demands such as increased storage capacity and diversification of forms, it is necessary to increase the size and variety of heat insulation boxes. Material and processing costs due to the increase in the number of points, an increase in investment costs for molding dies, an increase in storage space, etc. occur. On the other hand, a heat insulating box structure of a refrigerator in which the shape of the reinforcing component is changed to reduce the number of reinforcing components has been proposed (see, for example, Patent Document 1).

JP 2013-19607 A

  In the conventional refrigerator as described above, although the number of reinforcing parts of the heat insulation box is reduced, the amount of steel plate used for the compressor substrate is increased, and the rising piece is newly pressed, so the material and processing cost cannot be reduced. Further, since the rising piece of the compressor substrate is inserted into the slit of the outer box, there is a problem that workability at the time of assembly is poor.

  The present invention has been made to solve the above-described problems. Even when the capacity of a refrigerator is increased and diversified, the required strength and assembly workability can be ensured while reducing the number of parts and the amount of material used. It aims at providing the refrigerator which has a heat insulation box structure.

  The refrigerator according to the present invention forms a pair by extending in the front-rear direction to the bottom plate member that forms the bottom outer surface of the heat insulating box and the left end and the right end of the bottom surface of the bottom plate member as viewed from the front side. A refrigerator provided with a provided reinforcing member, wherein each of the reinforcing members is provided on the front side of the bottom plate member and fixed to the bottom plate member, and rearward with respect to the front reinforcing member And a rear reinforcing member fixed to the bottom plate member and spaced apart from each other.

  In the present invention, the reinforcing members provided on the left and right ends of the bottom plate of the bottom plate member so as to extend in the front-rear direction so as to form a pair are provided on the front side of the bottom plate member. Since the front reinforcing member fixed to the member, and the rear reinforcing member fixed to the bottom plate member that is spaced apart from the rear reinforcing member and fixed to the bottom plate member, heat insulation including the bottom plate member is provided. Front reinforcing member and rear reinforcing member can be individually assembled to the structural members of the box, improving the assemblability and increasing the capacity and diversification of the refrigerator, and the depth of the heat insulating box It is possible to share at least one of the reinforcing members even when the models are different, such as dimensions. Further, no reinforcing parts are required at the center of the bottom surface, and the material cost can be reduced.

It is a perspective view which shows the external appearance outline which looked at the heat insulation box of the refrigerator which concerns on Embodiment 1 of this invention from the front upper right. It is a disassembled perspective view which shows roughly the bottom face component structure in the heat insulation box shown in FIG. It is an expansion perspective view which shows the assembly of the front side reinforcement member and front side installation leg which were shown by FIG. It is a principal part perspective view when looking up at the heat insulation box shown in FIG. 1 from the back back lower part. It is a schematic cross-sectional view of the front side reinforcement member installation part in the lower left side corner | angular part of the heat insulation box shown in FIG. It is a schematic cross-sectional view of the center part in the front-rear direction in the lower left corner of the heat insulation box shown in FIG. FIG. 2 is a schematic cross-sectional view of the front side of a rear reinforcing member installation portion at a lower left corner of the heat insulation box shown in FIG. 1. It is a principal part perspective view which expands and shows the edge protection part vicinity provided in the bottom face center part of the heat insulation box shown in FIG. It is a perspective view which shows roughly the assembly method of the bottom face reinforcement structural part in the heat insulation box shown in FIG. It is a disassembled perspective view which shows schematically the bottom face component structure in the heat insulation box of the refrigerator which concerns on Embodiment 2 of this invention. It is a disassembled perspective view which shows schematically the bottom face component structure in the heat insulation box of the refrigerator which concerns on Embodiment 4 of this invention. It is a principal part perspective view when looking up at the heat insulation box shown in FIG. 11 from the back back side lower part. It is a disassembled perspective view which shows roughly the bottom face component structure in the heat insulation box of the refrigerator which concerns on Embodiment 5 of this invention. It is an expansion perspective view which shows the detail of the front side reinforced resin component shown by FIG.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing an outline of an external appearance of a heat insulating box body of a refrigerator according to Embodiment 1 of the present invention as viewed from the front upper right, and FIG. 2 is an exploded view schematically showing a bottom part configuration in the heat insulating box body shown in FIG. FIG. 3 is an enlarged perspective view showing the assembly of the front reinforcing member and the front installation leg shown in FIG. 2, and FIG. 4 is a main part when the heat insulation box shown in FIG. It is a perspective view. In the figure, a heat insulating box (excluding doors) 10 constituting the main body of the refrigerator is a U-shaped outer design member 1, a rear member 2, and a bottom outer surface of the heat insulating box 10 whose left and right side surfaces are connected by a top plate. Insulating material 5 (described later) formed by an outer box formed by a bottom plate member 3 having a heat insulating box bottom plate 31 and a front design plate 32 forming at least a part of the inner box 4 and an inner box 4 constituting an inner wall. (Shown in FIG. 5). The inside of the cabinet is divided into three compartments of storage rooms having different temperature zones, such as a refrigerator room and a freezer compartment, by a partition 41, but the number and arrangement of the compartments to be partitioned are not limited.

  The heat insulating material 5 is formed by foaming of a rigid urethane foam filled in the gap. When it is necessary to further improve the heat insulating performance of the heat insulating box 10, the plate-like vacuum heat insulating material (not shown) is preliminarily attached to the outer design member 1 or the inner with an adhesive tape or adhesive before the heat insulating material 5 is foam-filled. It is installed on a predetermined surface of the box 4 on the gap side. The outer design member 1 is colored by painting or pre-coating of a design film, and is provided with screw holes at predetermined positions for fastening with other parts constituting the heat insulating box body by press working. The fitting property between the inner box 4 and the back member 2 is installed at a predetermined portion, thereby ensuring the design and strength of the heat insulating box 10. The inner box 4 is formed by a vacuum forming of a thermoplastic resin sheet, a shelf, a guide for a container installed in the refrigerator, and a back design shape are formed, and an end is a fitting portion formed by a roll forming process of the outer design member 1 ( (Not shown).

The back member 2 is formed by, for example, pressing a plated steel plate. The partition 41 is formed of a thermoplastic resin by vacuum molding or injection molding, and partitions a storage room having a different temperature zone such as a refrigerator room or a freezer room. The interior of the partition 41 is a space, and the space is filled with rigid urethane foam or foamed polystyrene is installed to ensure heat insulation performance. In addition, a fixing part for a part such as a shelf and a vent hole in the refrigerator are integrally formed according to the product specifications. In addition, a urethane leakage prevention sealing material 5a is installed between the inner box 4 as necessary, and leakage due to foaming pressure of the heat insulating material 5 is prevented.
The bottom outer surface of the heat insulation box 10 is formed by the bottom plate member 3 configured by using the above-described heat insulation box bottom plate 31 and the machine room bottom plate 33 disposed on the rear bottom of the heat insulation box 10. The front design plate 32 may be formed integrally with the heat insulating box bottom plate 31. Moreover, when installing a machine room in the upper part of a refrigerator main body, all the baseplate members 3 are comprised by the heat insulation box bottom plate which changed the shape into flat form, for example.

  The heat insulation box bottom plate 31 forms the bottom outer surface of the heat insulation box 10 from the front end of the heat insulation box 10 to the center in the front-rear direction, and the rear end of the heat insulation box 10 from the rear end of the center in the front-rear direction. Is bent upward so as to form a ceiling surface with respect to the machine room bottom plate 33. The front design plate 32 is attached to the front edge portion of the heat insulating box bottom plate 31 by screw fastening. And the front side reinforcement member 6 is attached to the front part side of the right and left sides extended in the front-back direction of the heat insulation box bottom plate 31, and the rear side reinforcement member 7 is generally L-shaped in appearance on the rear side. The reinforcing member 6 is attached so as to be spaced apart. As shown in FIG. 3, a front installation leg 8 is assembled to the front reinforcing member 6 in advance. The front side reinforcing member 6, the rear side reinforcing member 7, and the front side installation leg 8 are basically symmetrical structures unless otherwise specified. The description of the configuration on the right side is omitted.

  The general means for securing the rigidity of the bottom surface of the conventional heat insulation box is that a reinforcing member formed so as to extend over the entire depth of the heat insulation box is installed on the bottom plate member. In the present invention, the front reinforcing member 6 disposed on the left and right front sides of the heat insulating box bottom plate 31 constituting the bottom plate member 3 and fixed to the bottom plate member, and the rear reinforcing member 6 are separated in the rearward direction. The first characteristic part is that both the left and right reinforcing members are constituted by two members so that the rear reinforcing member 7 is fixed to the heat insulating box bottom plate 31 constituting the bottom plate member 3. Yes.

  The heat insulation box bottom plate 31 is formed by press working such as a plated steel plate. In this example, the heat insulation box bottom plate 31 accommodates mechanical parts such as a compressor installed on the machine room bottom plate 33 provided on the bottom of the heat insulation box 10. It is curved and molded so as to also serve as a ceiling surface that forms the room space. The heat insulating box bottom plate 31 has a flange shape formed on the left and right side edges, with the front design plate 32 fixed to the front surface of the heat insulating box bottom plate 31 being in close contact with the lower front edge of the inner box 4. The corner portion including the rising side 31c (shown in FIG. 5 described later) is in close contact with the corner portion of the lower end portion of the outer design member 1 directly or via the front reinforcing member 6 or the rear reinforcing member 7, and The formed flange-shaped rising edge (not shown) is fixed in close contact with the lower end of the back member 2 to form an outer box. And the heat insulating material 5 which consists of a hard urethane foam is filled into the clearance gap between the inner box 4 arrange | positioned inside the outer box. A urethane leakage prevention sealing material 5a is installed between the outer design member 1 as necessary. The heat insulating material 5 is filled in the entire top surface of the heat insulating box bottom plate 31. Further, as shown in FIGS. 2 and 4, a screw hole 31 a for fastening the rear reinforcing member 7 is installed in a predetermined portion of the bottom surface of the heat insulating box bottom plate 31.

The front side design plate 32 is formed by press working so that the contact surface between the heat insulating box and the packing material for sealing the door of the storage room becomes flat in order to prevent cold air leakage in the refrigerator. 1 and the front reinforcing member 6 are screwed together. As the front design plate 32, a plated steel plate or a plate coated with a steel plate when designability is required is used. Moreover, when carrying a product, you may install the handle which a carrier has, or you may press-mold integrally.
As shown in FIG. 3, the front side reinforcing member 6 has a side surface portion and a front surface portion formed into an L-shaped cross section by pressing, and the front design plate 32 and the outer design member 1 are folded into a front screw hole 6a installed on the front surface. A curved piece (not shown) is screwed, and the front installation leg 8 is screwed into a bottom screw hole 6b installed on the bottom. The front screw fixing portion 6d having a plurality of front screw holes 6a is formed in a direction orthogonal to the piece extending in the front-rear direction forming the two surfaces having the L-shaped cross section. . Moreover, the positioning claw 6c for positioning with the outer design member 1 is installed in the back | inner side part of the front side reinforcement member 6 as needed. It is not necessary to secure the depth length of the front reinforcing member 6 beyond the length necessary for forming the bottom screw hole 6b and the positioning claw 6c.

  The front installation legs 8 are installed on the left and right sides of the bottom surface of the heat insulation box 10 and are installed so as to protrude forward from the heat insulation box 10 so that the refrigerator does not fall forward when the door is opened during use. The front installation leg 8 is, for example, a screw that can be adjusted in height according to the unevenness of the floor surface of the installation place at a location where the plated steel plate is formed into a downward U shape by pressing and protrudes forward from the heat insulating box 10 Type floor surface installation portion 8a is provided, and a roller-like caster 8b is provided behind the floor surface installation portion 8a, and the floor surface installation portion 8a is above the caster 8b even at the refrigerator installation position. The refrigerator can be moved by raising it.

  The rear reinforcing member 7 is shown in FIG. 4 with the upper surface of the end portion in the left-right direction of the machine room bottom plate 33 in contact with the lower surface portion of the portion extending in the front-rear direction that is continuous with the L-shaped corner portion. As described above, a plurality of screw holes 33 a provided in the machine room bottom plate 33 are screwed together with the machine room bottom plate 33, while the screw hole 31 a at the rear end in the center in the front-rear direction of the heat insulating box bottom plate 31. The rear reinforcing member 7 is screw-fastened using the screw hole 7a, and the rear reinforcing member 7 has an L-shaped outer appearance. The outer box of the heat insulation box 10 is configured to be fixed integrally with the lower end of the member 2. In addition, as for the part extended horizontally in the front-back direction in the rear side reinforcement member 7, the side corner | angular part was shape | molded by the cross-section L-shape similarly to the front side reinforcement member 6, and the place where it stood up arrange | positioned by the back part Has a U-shaped cross section.

  The length of the rear reinforcing member 7 in the front-rear direction may be the length from the rear end portion to the portion forming the screw hole 7a on the center portion side, and does not need to extend further forward. The machine room bottom plate 33 is, for example, for securing a shape and rigidity for installing a screw hole 33a for screwing a plated steel plate or the like to the rear reinforcing member 7 by pressing and a rear installation leg 33b that also serves as a transport caster. Reinforcing beads are molded, the shaft for fixing the compressor (not shown) is fixed by welding or caulking, and the compressor, cooler defrost water evaporating dish, condenser, and refrigerant circuit are installed during product assembly. A cooling fan is installed.

  Next, the second characteristic portion of the present invention in the fixing portion between the front side reinforcing member 6 and the rear side reinforcing member 7 will be described with reference to FIGS. 5 is a schematic cross-sectional view of the front reinforcing member installation portion at the lower left corner of the heat insulation box shown in FIG. 1, and FIG. 6 is a front-rear central portion of the lower left corner of the heat insulation box shown in FIG. 7 is a schematic cross-sectional view, FIG. 7 is a schematic cross-sectional view of the front side of the rear reinforcing member installation portion at the lower left corner of the heat insulation box shown in FIG. 1, and FIG. 8 is the bottom center of the heat insulation box shown in FIG. FIG. 9 is a perspective view schematically showing a method for assembling a bottom reinforcing component in the heat insulating box shown in FIG. 1. As shown in FIG. 5, in the installation portion of the front reinforcing member 6, the outer design member 1, the heat insulating box bottom plate 31, and 3 of the front reinforcing member 6 whose sides extending in the front-rear direction are formed in an L-shaped cross section. The mutual fixing portions of the members have a structure in which plate members having an L-shaped cross section are in close contact with each other.

That is, the front side reinforcing member 6 has two inner surfaces connected to the corners having an L-shaped cross section so that the left end portion of the heat insulating box bottom plate 31 is directed upward with respect to the heat insulating box bottom plate 31 as a bottom plate member. It is closely attached to the two outer surfaces connected to the L-shaped corners of the bent up side 31c, and the outer two surfaces connected to the L-shaped corners of the front reinforcing member 6 are the outer design member 1. Are closely attached to the two inner surfaces connected to the corners of the bent side 1a. In addition, the gap dimension in each figure is exaggerated.
And in the front-back direction center part of the heat insulation box bottom, as shown in FIG. 6, a reinforcement member is not installed, but two inner surfaces in the lower left part of the outer design member 1 are the left-right direction of the heat insulation box bottom plate 31. The end portions are arranged so as to be opposed to and be in close contact with the two outer surfaces connected to the L-shaped corner portion formed by bending upward.
Further, in the left corner of the rear end portion in the front-rear direction central portion of the bottom surface of the heat box body, as shown in FIG. The rear side reinforcing member 7 formed into a letter shape is again in close contact with the entire bottom corners as in FIG.

  The back side of the front screw fixing portion 6d (shown in FIG. 3), which is the front portion of the front reinforcing member 6, is in close contact with the heat insulating material 5, and the rear reinforcing member 7 is a heat insulating box bottom plate 31 and an outer design member. 4, the screw hole 7 a and the screw hole 7 b in FIG. 4 are fastened to each other by screw fastening, so that there is no parallel displacement or rotational displacement with respect to the heat insulating box 10. Further, bottom parts such as the heat insulating box bottom plate 31, the machine room bottom plate 33, the left and right front side reinforcing members 6, and the left and right rear side reinforcing members 7 are fastened to each other at the bottom portion, and in particular, the second feature of the present invention. Opposing surfaces of both members in the fixing portion between the front reinforcing member 6 and the heat insulating box bottom plate 31 as the bottom plate member, and both members in the fixing portion between the rear reinforcing member 7 and the heat insulating box bottom plate 31 As shown in FIGS. 5 and 7, the opposing surfaces of the plate have a structure in which the flat portions of the plate material are in close contact with each other at the corners and corners of the L-shaped cross section. It is sufficient to suppress the deformation of the bottom surface of the heat insulation box against the load generated during transportation and the twisting force applied to the heat insulation box when the user opens or hangs the door containing stored items. Rigidity is ensured.

In addition, the edge protection part 31b provided between the front side reinforcement member 6 and the rear side reinforcement member 7 in the bottom center part of the heat insulation box shown in FIG. 8 is the front side reinforcement member 6, the rear side reinforcement member 7, and the heat insulation box. In order to prevent a user's foot from being cut by a step generated in the body bottom plate 31, a portion between the front side reinforcing member 6 and the rear side reinforcing member 7 of the heat insulating box body bottom plate 31 is smooth downward. When the heat insulating box bottom plate 31 is press-molded, the edge protection part 31b is formed at the same time.
Next, an example of the method for assembling the heat insulating box of the refrigerator according to Embodiment 1 will be described. In the conventional refrigerator heat insulation box, the front design plate, the front and rear integrated reinforcing member, and the heat insulation box bottom plate are assembled to the outer design member in this order, and then the front installation leg, the machine room bottom plate, and the rear metal plate are screwed together. The procedure was general.

  First, in the state where the bottom surface portion of the front design plate 32 is sandwiched between the front reinforcing member 6 and the front installation leg 8 in advance, the above-mentioned three types of left and right screw members 6b corresponding to the bottom surface portion have a total of five members on the left and right sides. The front design plate 32, the front reinforcing member 6, and the front installation leg 8 are assembled in advance. Further, the rear reinforcing member 7 is screwed into the screw hole 31a provided at a predetermined position on the rear side of the heat insulating box bottom plate 31 and is assembled in advance. Next, the front side reinforcing member 6 is positioned in the depth direction by the positioning claws 6c provided on the front side reinforcing member 6 with respect to the outer design member 1, and the bending edge in the horizontal direction of the lower edge portion of the outer side design member 1 is determined. 1a is inserted into the gap between the front reinforcing member 6 and the front installation leg 8 as shown in FIG. 5, and the heat insulating box bottom plate 31 assembled with the rear reinforcing member 7 is combined with the lower end of the outer design member 1. Then, the bent part of the outer design member 1 is screwed into the front screw hole 6a of the front reinforcing member 6 to assemble the front part.

Further, the machine room bottom plate 33 is fixed to the rear reinforcing member 7 with the screw holes 33 a and the rear assembly parts are installed. The rear member 2 is installed in the screw hole 7 b at the L-shaped upper end of the rear reinforcing member 7. Screw the lower end corner of the screw. FIG. 9 schematically shows a method for assembling a point portion in the assembly process described above. The outer design member 1 and the front reinforcing member 6 or the rear reinforcing member 7 or the portion where the outer design member 1 and the heat insulation box bottom plate 31 directly face each other is a fixing means such as a fixing screw or an adhesive not shown. Is appropriately fixed.
In order to verify the rigidity of the heat insulation box according to the first embodiment, a conventional heat insulation box using one reinforcing member on each of the left and right sides formed over the entire depth of the bottom plate is used as a comparative example. As a result of numerical analysis comparing the amount of deformation of the upper end portion on the hinge side of the heat insulating box when applying 30 kg as a load in the vertical direction to the end portion on the anti-hinge side of the upper door, with the structure of the first embodiment, The deformation amount of the conventional one was 8.17 mm, but in the case of the first embodiment, it is 8.16 mm, and the heat insulation box of the first embodiment is equivalent to the conventional one in terms of strength. Thus, it was confirmed that it was nothing inferior.
In the first embodiment, the front reinforcing member 6 and the rear reinforcing member 7 can be made common even if the outer dimensions are different in accordance with the capacity, for example, in order to apply to different types of capacity. Further, for example, even when the design of the machine room is changed in a certain product type, it is possible to easily cope with the change by changing only the rear reinforcing member 7.

  According to the first embodiment, the front reinforcing member 6 is fixed by screwing the reinforcing member at the bottom divided into two members of the front reinforcing member 6 and the rear reinforcing member 7 in close contact with the heat insulating box bottom plate 31. Further, the torsional deformation of the rear reinforcing member 7 is suppressed, and no reinforcing member is required in the center portion in the front-rear direction of the bottom surface, and the material cost can be reduced. In addition, the reinforcing member extending in the front-rear direction, which has been integrated in the past, is divided into the front reinforcing member 6 and the rear reinforcing member 7, so that the front design plate 32, the front reinforcing member 6, and the front installation leg 8 are pre- On the other hand, since the heat insulation box bottom plate 31 and the rear reinforcing member 7 can be assembled in advance and then assembled to the outer design member 1, the assemblability is improved, and the gap between the parts during assembly is also increased. The dimensional quality and rigidity of the heat insulation box 10 are improved. Further, by separately press-molding the front side reinforcing member 6 and the rear side reinforcing member 7, it is possible to reduce the molding functional force and the number of pressing processes, and it is possible to reduce the processing cost and the die investment cost. Moreover, since the front side reinforcing member 6 or the rear side reinforcing member 7 can be made common even among varieties having different depth dimensions of the heat insulation box 10, the investment cost of the mold can be further reduced, and the storage place for the parts can be reduced. Many remarkable effects can be obtained.

Embodiment 2. FIG.
FIG. 10 is an exploded perspective view schematically showing the configuration of the bottom part in the heat insulating box of the refrigerator according to Embodiment 2 of the present invention. In the figure, the rear reinforcing member 7A is formed only by a portion extending linearly in the front-rear direction, and the appearance is L-shaped on the rear end side like the rear reinforcing member 7 of the first embodiment. The part raised up is omitted. The second embodiment is suitable for use in a small refrigerator having a small storage mass such as a storage capacity of less than 300 liters, for example. 10 is not required to be reinforced by the raised portion of the rear reinforcing member 7 as shown in FIG. 2, the rear reinforcing member of FIG. As shown in 7A, only the portion extending linearly in the front-rear direction is formed to have substantially the same shape as the portion extending linearly in the front-rear direction in the rear reinforcing member 7 of the first embodiment. Is.
Other configurations are the same as those of the first embodiment.

In the second embodiment, the front end portion of the rear reinforcing member 7A is screwed to the rear end portion of the central portion of the heat insulating box bottom plate 31 by the screw hole 7a, and from the central portion to the rear end portion of the rear reinforcing member 7A. In the meantime, they are superposed on the upper surfaces of the left and right ends of the machine room bottom plate 33 and screwed to each other as in the first embodiment. Further, the lower end of the side surface of the outer design member 1 (not shown) is in contact with and connected to the outer surface of the rear reinforcing member 7A. When the rear side reinforcing member 7A is press-molded, it is possible to divert the press working mold of the rear side reinforcing member 7 of Embodiment 1 only by shortening the depth dimension of the blank material. Since the L-shaped bending process is not required, the number of machining processes can be reduced as compared with the first embodiment.
As described above, according to the second embodiment, since the rear reinforcing member 7A can be reduced in size and simplified, the material cost can be further reduced. Since the pressing process can be shared with the first embodiment and the number of pressing processes can be reduced, the processing cost and the die investment cost can be further reduced.

Embodiment 3 FIG.
In Embodiment 3, the front reinforcing member 6 and the rear reinforcing member 7 have different thicknesses in the exploded perspective view of the bottom part configuration of the heat insulating box shown in FIG. For example, when the front side reinforcing member 6 and the rear side reinforcing member 7 are made common in different varieties of refrigerators, the rear side reinforcing member 7 is front side reinforced in order to withstand the load applied to the bottom part of the refrigerator having a large capacity. It is thicker than the member 6 to ensure the rigidity of the machine part storage space on the back side of the bottom surface. At this time, if the thickness of the steel plate is a difference of, for example, about 0.2 mm in the press work, the required dimensional accuracy as a part for forming the heat insulation box can be secured even if the steel plate is formed with the same press mold.
According to the configuration of the third embodiment, even if the thicknesses of the front side reinforcing member 6 and the rear side reinforcing member 7 are different between refrigerators having greatly different storage capacities, the thickness can be adjusted by about 0.2 mm. The stamping die can be shared, and the front reinforcing member 6 or the rear reinforcing member 7 can be used in common even for products having different strengths on the left and right sides of the heat insulation box. The effect that the storage place of parts can be reduced is acquired.

Embodiment 4 FIG.
FIG. 11 is an exploded perspective view schematically showing the bottom part configuration in the heat insulation box of the refrigerator according to Embodiment 4 of the present invention, and FIG. 12 is a view when the heat insulation box shown in FIG. It is a principal part perspective view. In the figure, as for the rear side reinforcing member, a linear rear side reinforcing member 7A similar to that of the second embodiment shown in FIG. 10 is used on the left side when viewed from the front of the refrigerator, and the right side is shown in the first embodiment shown in FIG. The rear reinforcing member 7 having the same appearance as the L-shape is used. And as shown in FIG. 12, the upper surface part of the machine room bottom board 33 and the lower surface part of the heat insulation box bottom plate 31 which forms the ceiling part of the machine room are connected to the machine room of the back bottom part, A plate-like holding member 33c formed so as to divide the chamber into two left and right chambers is installed. The holding member 33c has a function of holding the components of the refrigerator such as a fan and a condenser housed in the machine room, and mechanically connects the machine room bottom plate 33 and the heat insulating box bottom plate 31 to fix them to each other. By doing so, it has a function of reinforcing the mechanical strength around the machine room in the heat insulating box 10.

In the fourth embodiment configured as described above, since the holding member 33c bears a part of the mechanical strength around the machine room, the shape of the front reinforcing member 6 or the rear reinforcing member 7 is simplified. For example, it is possible to reduce the plate thickness, or to form different shapes on the left and right as required. In the specific example of the fourth embodiment, one of the rear reinforcing members 7 close to the place where the holding member 33c is disposed is configured by a simple linear rear reinforcing member 7A. The holding member 33c is provided with, for example, a through hole for inserting a device or members constituting the refrigeration cycle such as a refrigerant pipe, a fixing portion for holding a component, etc., but is not illustrated. .
According to the fourth embodiment, the material cost of the rear reinforcing member 7 can be further reduced, and the die can be used in common or the number of press working steps can be reduced. .

Embodiment 5. FIG.
FIG. 13 is an exploded perspective view schematically showing the configuration of the bottom part in the heat insulating box of the refrigerator according to Embodiment 5 of the present invention, and FIG. 14 is an enlarged perspective view showing the details of the front side reinforcing resin part shown in FIG. It is. In the figure, the front side reinforcing resin part 6A having the function of the front side reinforcing member 6 in FIG. 2 is made of a thermoplastic resin molded body as shown in FIG. 14, and has a floor surface installation part having the function of the front side installation leg 8 in FIG. 8a is integrally formed. The front side reinforcing resin part 6A is molded by injection molding by adding a thermoplastic resin and additives such as a reinforcing agent, a flame retardant, and a colorant as necessary. The front reinforcing resin part 6A has a screw boss 6e for fastening the front design plate 32 and a heat insulating box bottom plate 31 positioned and in close contact with each other to prevent the rigid urethane foam from falling off. A body bottom plate insertion portion 6f and the like are formed. The front installation leg 8 may have a height adjusting function by a separate member formed by dividing into male screw parts and female screw parts as necessary. Other configurations are the same as those of the first embodiment.

  According to the fifth embodiment configured as described above, the front screw fixing portion 6d with the front design plate 32, the front installation leg 8, the heat insulating box bottom plate insertion portion 6f which is a fixing portion of the heat insulating box bottom plate 31, and the like. Can be formed integrally by injection molding, so that the processing cost and mold investment cost can be reduced, and it can be installed in close contact with the heat insulation box bottom plate 31, so that the urethane leakage prevention seal material 5a can be reduced and the front installation leg 8 can be reduced. Therefore, the material cost can be reduced.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted. For example, various modifications such as changing the screw fastening location to other fixing means such as rivet fastening and using an adhesive together with the fixing location are possible.

1 Outer design member, 1a Bending side, 2 Back member, 3 Bottom plate member,
31 heat insulation box bottom plate, 31a screw hole, 31b edge protection part,
31c Rise side, 32 Front design plate, 33 Machine room bottom plate,
33a screw hole, 33b rear installation leg, 33c holding member,
4 inner box, 41 partition, 5 heat insulating material, 5a urethane leakage prevention sealing material,
6 front reinforcing member, 6A front reinforcing resin part, 6a front screw hole,
6b Bottom screw hole, 6c Positioning claw, 6d Front screw fixing part,
6e screw boss, 6f heat insulation box bottom plate insertion part, 7, 7A rear side reinforcing member,
7a Screw hole, 7b Screw hole, 8 Front installation leg, 8a Floor installation part,
8b caster, 10 heat insulation box.

The refrigerator according to the present invention is a pair of a bottom plate member that forms the bottom outer surface of the heat insulation box and a left end portion and a right end portion of the bottom surface portion of the bottom plate member that extend in the front-rear direction as viewed from the front side. Each of the reinforcing members is provided on the front side of the bottom plate member and fixed to the bottom plate member, and on the rear side of the front reinforcing member. A rear reinforcing member that is spaced apart and fixed to the bottom plate member, and the front reinforcing member or the rear reinforcing member has an L-shaped cross section extending in the front-rear direction. The corners of the rising edges of the L-shaped cross section formed by bending the left and right end portions of the bottom plate member in the upward direction, respectively, on the inner two surfaces connected to the corners of the L-shaped cross section. It is configured so as to be in contact with the two outer surfaces connected to the portion .

Claims (7)

  A refrigerator including a bottom plate member that forms the bottom outer surface of the heat insulation box and a pair of reinforcing members that extend in the front-rear direction at the left end and the right end of the bottom surface of the bottom plate member as viewed from the front side. Each of the reinforcing members is provided on the front side of the bottom plate member and is fixed to the bottom plate member, and is disposed apart from the front reinforcing member at the rear portion. And a rear reinforcing member fixed to the bottom plate member.   At least a part of the opposing surfaces of both the front reinforcing member and the bottom plate member or the opposing surfaces of both the rear reinforcing member and the bottom plate member are in close contact with each other in a plate shape. The refrigerator according to claim 1.   The bottom plate member includes a machine room bottom plate disposed outside a rear bottom portion of the heat insulation box, and forms a bottom outer surface of the heat insulation box from a front end portion to a center portion in the front-rear direction. A heat insulating box bottom plate formed by bending upward so as to form a ceiling surface with respect to the machine room bottom plate from the rear end of the central portion in the direction to the rear end portion of the heat insulating box. The refrigerator according to claim 1 or 2.   The front side reinforcing member or the rear side reinforcing member is formed such that an extending portion in the front-rear direction is formed in an L-shaped cross section, and two inner surfaces connected to the corners of the L-shaped cross section are formed on the bottom plate member. 2. The apparatus according to claim 1, wherein the outer side surfaces are in close contact with the corners of the rising side of the L-shaped section formed by bending the end portions in the left-right direction upward. The refrigerator according to any one of 3 to 3.   The two outer surfaces connected to the corners of the front reinforcing member whose front-rear extending portion has an L-shaped cross section or the two outer surfaces connected to the corners of the rear reinforcing member are the heat insulating box. The appearance forming the left and right side surfaces and the top surface of the body is closely attached to the two inner surfaces connected to the corners of the L-shaped bent side bent at the bottom side of the U-shaped outer design member. The refrigerator according to claim 4.   The front reinforcing member has a front screw fixing portion formed in a direction orthogonal to a piece forming the two surfaces having the L-shaped cross section, and the front screw fixing portion includes left and right side surfaces of the heat insulating box. 6. The refrigerator according to claim 4 or 5, wherein a folding piece on the front side of the outer design member whose outer shape forming the top surface outline is U-shaped is screwed.   The refrigerator according to any one of claims 1 to 6, wherein the front reinforcing member is formed of a resin molded body, and a front installation leg is integrally formed on a lower surface thereof.

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