JP6628896B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator having a gasket on an opening / closing door.

  2. Description of the Related Art Conventionally, a refrigerator has a refrigerator box body having heat insulating properties and an opening / closing door provided with a gasket. When the opening of the refrigerator box is shielded by the opening / closing door, by contacting the refrigerator box with the gasket, the leakage of cold air from the inside of the refrigerator to the outside of the refrigerator and the heat of outside air from the outside of the refrigerator to the inside of the refrigerator are reduced. Prevents intrusion and enhances insulation performance.

  In such a refrigerator, a bag-shaped bulging portion is provided near the tip of a hollow bag portion located inside the gasket, and a fin portion is formed to extend from the side surface of each bag portion. There is one configured to close a gap between a refrigerator box and an opening / closing door by an inflating portion and a fin portion (for example, see Patent Document 1). Further, there is a gasket in which a partition is formed inside the bag-shaped portion in order to maintain the shape of the bag-shaped portion (for example, see Patent Document 2).

JP-A-2015-166663 (page 15, FIG. 6) JP 2012-37151 A (Page 8, FIG. 3, FIG. 4)

  When the door comes into contact with the refrigerator box, the bag portion of the gasket is deformed. At that time, a reaction force is generated in the bag-shaped portion. Each component of the refrigerator box and the opening / closing door has a variation in molding or a variation in assembly of each component, and the relative positional relationship between the refrigerator box and the opening / closing door differs for each product. Therefore, the reaction force generated in the bag-shaped portion when the door comes into contact with the refrigerator box also differs depending on the product. As a result, even if the above-mentioned bag-shaped part is provided, the gap between the refrigerator box and the door may not be able to be closed depending on the assembled state of the door. Further, when the reaction force of the bag-shaped portion is large, the opening / closing door may not be completely closed and may be in a half-open state. As a result, there is a problem that cold air inside the refrigerator leaks out of the refrigerator and warm air outside the refrigerator flows into the refrigerator.

  The present invention has been made to solve the above-described problems, and is a refrigerator having a configuration in which a gasket of an opening / closing door is in contact with a refrigerator box body, and a refrigerator capable of sealing the inside of the refrigerator. The purpose is to provide.

The refrigerator according to the present invention is provided with a box having an opening, a rectangular door that opens and closes the opening of the box, and attached to the outer edge along an outer edge that is an inner edge of the door. A gasket, wherein the door is in close contact with the box body and closes the opening by the magnetic force of a magnet built in the gasket, wherein the gasket is A first base extending along the outer edge and located on the door side; a second base extending along the outer edge of the door and located on the box side; A locking portion formed so as to extend toward the door and locked to the door; and a hollow bag-shaped portion formed at the second base portion so as to extend toward the box. The shape is formed on the surface of the second base on the side of the box. A pair of roots, and a pair of roots, which are connected to the second base by a refrigerator outside root located outside the refrigerator, and the door is connected to the opening of the box body. When closing, it has an abutting portion that comes into contact with the box, and a pointed portion formed at a tip end opposite to the pair of roots, and the pair of roots is the second base. orthogonal along the direction extending towards said box body, the inner peripheral surface of the bag-like portion, compartment of the refrigerator of at least said chamber outwardly adjacent the base portion and the pair of base portions Grooves thinner than other portions are respectively formed in portions adjacent to the inner base portion located inside, and the pointed portion is continuous with the inner side surface and the contact portion. distance between sides of Kurasotogawa gradually reduced toward the distal end As, in which has a shape bent at an acute angle.

  According to the refrigerator according to the present invention, in the bag-like portion of the gasket, the pair of root portions formed to extend toward the box is along a direction orthogonal to the second base portion. Therefore, when the door is closed, the bag-shaped portion of the gasket is prevented from falling down to the side opposite to the box, and the contact portion of the gasket can be stably brought into contact with the box. Further, on the inner peripheral surface of the bag-shaped portion, at least a portion adjacent to the outer base portion and a portion adjacent to the inner base portion are formed with grooves thinner than other portions. Therefore, the reaction force generated in the bag-shaped part can be reduced when the bag-shaped part falls down inside the storage in a state where the contact part is in contact with the box. Further, the pointed portion of the bag-shaped portion has a shape bent at an acute angle. Therefore, when the bag-shaped portion and the box come into contact with each other, the pointed portion becomes a bending point, and the side surface on the inner side of the refrigerator and the contact portion are crushed so as to approach each other. Therefore, it is possible to prevent the bag-shaped portion from being crushed in an unexpected manner and to be caught between the door and the box, thereby preventing generation of an unnecessary gap.

  As described above, according to the present invention, when the door is closed, the direction in which the bag-shaped portion of the gasket falls down is defined in a certain direction regardless of the relative positional relationship between the door and the box. The bag-shaped portion can be stably brought into contact with the box, the reaction force generated in the bag-shaped portion can be reduced, and the generation of a gap between the box and the door can be prevented. Therefore, the sealing performance and the heat insulating performance of the gasket can be improved without being affected by individual differences of refrigerator products.

FIG. 2 is a perspective view of the refrigerator in Embodiment 1 of the present invention. FIG. 2 is a sectional view taken along line AA of FIG. 1. FIG. 2 is a perspective view of a gasket according to Embodiment 1 of the present invention. FIG. 4 is a sectional view taken along line BB of FIG. 3. FIG. 4 is a view showing a modification of the gasket of the first embodiment. FIG. 4 is a cross-sectional view showing a state where a gasket according to a modification of the first embodiment is attached. FIG. 9 is a partial perspective view of a gasket according to Embodiment 2 of the present invention. It is a perspective view of the upper part of the heat insulation box in Embodiment 2 of this invention. It is a perspective view which shows the relative positional relationship of the corner part of the heat insulation box and the gasket in Embodiment 2 of this invention. It is sectional drawing which cut | disconnects and shows the rotary door in Embodiment 3 of this invention in the position corresponding to line AA of FIG.

  Hereinafter, an embodiment of a refrigerator in the present invention will be described in detail with reference to the drawings. The present invention is not limited by the embodiments described below. Also, in the following drawings, the size of each component may be different from the actual device.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a refrigerator according to Embodiment 1 of the present invention. The refrigerator 1 includes a heat insulating box 2 as a main body. The inside of the heat-insulating box 2 is divided into a plurality of storage rooms, and the temperature zone of each storage room differs depending on the food to be stored and the use. The uppermost storage room is the refrigerator room 3, the lower left storage room of the refrigerator room 3 is the ice making room 4, and the lower right storage room of the refrigerator room 3 is the switching room 5, which can switch the storage temperature zone, the ice making room 4 and the switching room. The lower storage room 5 is a freezing room 6 and the lowest storage room is a vegetable room 7.

  The heat insulating box 2 has an open front. The heat-insulating box 2 is provided with a rectangular heat-insulating door that opens and closes the front opening of each of the partitioned storage rooms. The refrigerating compartment left door 8 and the refrigerating compartment right door 9 which are heat insulating doors provided at the front opening of the refrigerating compartment 3 are rotated such that the upper and lower sides of the side of the heat insulating box 2 are supported by the heat insulating box 2. It is a type door. An ice making room door 10 which is a heat insulating door is provided at a front opening of the ice making room 4, and a switching room door 11 which is a heat insulating door is provided at a front opening of the switching room 5. Is provided with a freezing compartment door 12 which is a heat insulating door, and a vegetable compartment door 13 which is a heat insulating door is provided at the front opening of the vegetable compartment 7. A frame (not shown) is attached to each of the ice making room door 10, the switching room door 11, the freezing room door 12, and the vegetable room door 13, and the frame is a rail (not shown) provided on the inner side surface of the heat insulating box 2. Is slidably supported. That is, the ice making room door 10, the switching room door 11, the freezing room door 12, and the vegetable room door 13 are drawer-type doors that move in the front-rear direction of the refrigerator 1.

FIG. 2 is a sectional view taken along line AA of FIG. In FIG. 2, the right side is outside the refrigerator and the left side is inside the refrigerator.
The gasket 17 has a locking portion 20, an outer wall portion 21, an inner wall portion 22, a close contact portion 19, and a bag portion 25. The magnet 18 is built in the close contact portion 19. A groove 16 is formed in the inner plate 15 of the refrigerator compartment right door 9. The locking portion 20 of the gasket 17 is attached to the refrigerator compartment right door 9 in a state fitted in the groove 16. The heat insulating box 2 is made of a steel plate, and has an inner box 2a facing the inside of the storage and an outer box 2b facing the outside of the storage. The outer edge of the outer box 2b on the side of the refrigerator compartment right door 9 is bent at substantially 180 degrees to form a front flange 2c. The magnet 18 in the contact portion 19 of the gasket 17 jumps and adheres to the front flange portion 2c by magnetic force. With this configuration, when the opening of the heat insulation box 2 is closed by the refrigerator compartment right door 9, the gap 14 between the heat insulation box 2 and the refrigerator compartment right door 9 is closed. As a result, cold air leakage from the inside to the outside of the refrigerator is shut off.

  Here, the configuration of the gasket 17 will be described in detail by taking the refrigerator compartment right door 9 as an example. FIG. 3 is a perspective view of the gasket according to Embodiment 1 of the present invention. The gasket 17 has a rectangular frame shape as a whole, and is provided inside the refrigerator compartment right door 9 such that each side is along the inner peripheral edge of the refrigerator compartment right door 9 described above. In FIG. 3, the gasket 17 is shown from the inside of the refrigerator. Each side of the gasket 17 is a band-shaped member, and both ends of each side are cut at an angle of approximately 45 degrees. The four corners 17a of the gasket 17 are formed by welding one end of the short side and one end of the long side by welding to form an angle of about 90 degrees.

  FIG. 4 is a sectional view taken along line BB of FIG. 4 is the refrigerator compartment right door 9 side, the lower part of the paper is the heat insulation box 2, and the right side of the paper is outside the refrigerator and the left side of the paper is the refrigerator. The gasket 17 is formed by molding a synthetic resin having flexibility, for example, polyvinyl chloride containing a plasticizer. The gasket 17 has a plate-like first base 41 and a second base 42. The first base 41 and the second base 42 extend along the inner peripheral edge of the refrigerator compartment right door 9. The first base 41 is located on the side of the refrigerator compartment right door 9, and the second base 42 is located on the side of the heat insulating box 2.

  The above-described locking portion 20 is formed on the upper surface of the first base portion 41 on the paper surface, that is, the surface on the side of the refrigerator compartment right door 9. The locking portion 20 is a hollow member having a cross section in the shape of an arrowhead. The storage outside wall portion 21 and the storage inside wall portion 22 are formed on an end surface of the first base 41 opposite to the end surface on which the locking portion 20 is formed. A contact portion 19 is formed below the outer wall portion 21 of the refrigerator, that is, on a side opposite to the first base portion 41. The inside of the storage of the contact portion 19 is connected to the second base 42. The inside of the storage of the contact portion 19 is connected to the second base 42. A second base 42 is connected to a lower side of the inner side wall 22 of the refrigerator, that is, on a side opposite to the first base 41. In other words, the first base portion 41 and the second base portion 42 are connected by the inner wall portion 22.

  The bag-like portion 25 is formed on the lower surface of the second base portion 42 on the paper surface, that is, on the surface opposite to the surface to which the inner wall portion 22 is connected. A hollow portion 23 is formed by the outside wall 21 and the inside wall 22. The hollow portion 23 is partitioned by a partition wall 24 into an outer hollow portion 23a and an outer hollow portion 23b.

  The hollow bag-like portion 25 has an abutment portion 25a, an outer base portion 25b, an inner base portion 25c, and a pointed portion 25e. The contact portion 25a is a side surface on the outside of the refrigerator of the bag-like portion 25, and is a portion that contacts the inner box 2a of the refrigerator 1 when the refrigerator compartment right door 9 is closed.

  The warehouse outer root 25b and the warehouse inner root 25c are a pair of roots formed on the lower surface of the second base 42 in the drawing, and are formed to extend downward. That is, the outer-compartment base 25b and the inner-compartment base 25c are formed on the surface of the second base 42 facing the heat-insulating box 2, and are formed to extend toward the heat-insulating box 2. The refrigerator outer base 25b is located outside the refrigerator 1 and the refrigerator inner root 25c is located inside the refrigerator 1. The contact part 25a is connected to the second base part 42 by the outside base part 25b. The inner side surface of the bag-like portion 25 is connected to the second base 42 by the inner base portion 25c. The angle formed by the outside base 22b and the second base 42 and the angle formed by the inside base 25c and the second base 42 are the same angle. In the first embodiment, these angles are right angles. That is, the outer storage base 25b and the inner storage base 25c extend toward the heat-insulating box 2 along a direction orthogonal to the second base 42, respectively. The length extending downward of the warehouse outer root 25b is longer than the length extending downward of the warehouse inner root 25c.

The pointed portion 25e is formed at the tip of the bag-like portion 25 on the side opposite to the outer base portion 25b and the inner base portion 25c. The pointed portion 25e has a shape bent at an acute angle so that the distance between the inner side surface and the outer side surface that is continuous with the contact portion 25a gradually decreases toward the tip.

  A groove 25da, a groove 25db, a groove 25dc, a groove 25dd, and a groove 25de are formed on the inner peripheral surface of the bag-like portion 25. The groove 25da, the groove 25db, the groove 25dc, the groove 25dd, and the groove 25de are formed to be thinner than other portions of the bag-like portion 25. The groove 25da is formed in a portion of the contact portion 25a adjacent to the outer base portion 25b. The groove 25db is formed in a portion of the bag-like portion 25 on the inner side surface adjacent to the inner base portion 25c. The groove 25dc is formed between the groove 25da and the pointed portion 25e. The groove 25dd and the groove 25de are formed between the groove 25db and the pointed portion 25e. The groove 25dd is located on the side near the groove 25db, and the groove 25de is located on the side near the pointed portion 25e.

  As described above, the gasket 17 is formed by molding a synthetic resin having flexibility, for example, polyvinyl chloride containing a plasticizer. Therefore, the storage outside wall 21 and the storage inside wall 22 can expand and contract in the vertical direction of the drawing. Further, the bag-like portion 25 may be deformed by its own weight, and may fall from the outside of the warehouse toward the inside of the warehouse or from the inside of the warehouse toward the outside of the warehouse due to its own weight. The relative positional relationship between the inner box 2a and the inner plate 15 may be different for each product due to variations in the molding of the above-described components constituting the refrigerator 1 or variations in the assembly of the components. Therefore, there is a possibility that the bag-like portion 25 is deformed toward the hollow portion 23.

  In the first embodiment, the outer base portion 25b connecting the contact portion 25a to the second base portion 42 and the inner base portion connecting the inner side surface of the bag-shaped portion 25 to the second base portion 42. 25 c extend toward the heat-insulating box 2 along a direction orthogonal to the second base 42. Therefore, regardless of the individual difference of the refrigerator, the bag-shaped portion 25 is prevented from being deformed toward the hollow portion 23, and the bag-shaped portion 25 is prevented from falling down toward the hollow portion 23. Therefore, the contact portion 25a can be stably brought into contact with the inner box 2a of the heat insulating box 2 irrespective of individual differences between products.

  On the inner peripheral surface of the bag-shaped portion 25, a groove 25da is formed at a portion adjacent to the outer base portion 25b at the contact portion 25a, and at the inner side base portion 25c at the inner side surface of the bag-shaped portion 25 at the inner side. A groove 25db is formed in an adjacent part. The groove 25da and the groove 25db are thinner than a portion of the bag-like portion 25 where no groove is formed, and are more easily deformed by an external force than other portions. Therefore, when the bag-like portion 25 falls down inside the storage while the contact portion 25a is in contact with the inner box 2a of the heat-insulating box 2, the reaction force generated in the bag-like portion 25 can be reduced.

  Further, the pointed portion 25e of the bag-shaped portion 25 has a shape bent at an acute angle as described above. Therefore, when the bag-like portion 25 and the inner box 2a come into contact with each other, the pointed portion 25e becomes a bending point, and the bag-like portion 25 is crushed. The relative positional relationship between the inner box 2a and the inner plate 15 may be different for each product due to variations in the molding of the above-described components constituting the refrigerator 1 or variations in the assembly of the components. Regardless of such individual differences of the products, when the bag-shaped portion 25 is crushed, the side surface on the inner side of the refrigerator where the grooves 25db, 25dd, and 25de are formed always comes closer to the contact portion 25a. Collapse with Therefore, it is possible to prevent the bag-like portion 25 from being crushed in an unexpected manner and to be caught between the inner box 2a and the inner plate 15, thereby preventing generation of an unnecessary gap.

  As described above, according to the first embodiment, regardless of the individual difference in the relative positional relationship between the heat insulating box 2 and the refrigerator compartment right door 9, the bag-like portion 25 is closed when the refrigerator compartment right door 9 is closed. Is defined in a fixed direction, the bag-like portion 25 is stably brought into contact with the inner box 2a, the reaction force generated in the bag-like portion 25 is reduced, and the inner box 2a and the inner plate 15 The generation of a gap between them is prevented. Therefore, the sealing performance and the heat insulating performance of the gasket 17 can be improved without being affected by individual differences of the products of the refrigerator 1, and the amount of heat leakage can be suppressed.

  In addition, the gasket having the same configuration as that of the first embodiment is also used in the other heat-insulating doors, that is, the refrigerator compartment left door 8, the ice making compartment door 10, the switching compartment door 11, the freezing compartment door 12, and the vegetable compartment door 13. Is provided.

  FIG. 5 is a view showing a modification of the gasket of the first embodiment. FIG. 5 shows a cross section cut at the same position as line BB in FIG. In this modified example, the fin-like portion 26 is formed on the lower surface of the second base portion 42 on the inner side of the bag-like portion 25 than the bag-like portion 25. The fin portion 26 extends toward the bag portion 25.

  FIG. 6 is a cross-sectional view showing a state where a gasket according to a modification of the first embodiment is attached. FIG. 6 shows a cross section cut at the same position as line AA in FIG. As shown in FIG. 6, when the refrigerator compartment right door 9 is closed and the bag-like portion 25 of the gasket 17 contacts the inner box 2a, the bag-like portion 25 is deformed to the inside of the refrigerator. At this time, since the fin-like portion 26 comes into contact with the bag-like portion 25, the deformation of the bag-like portion 25 in a direction away from the inner box 2a is suppressed. Therefore, the bag-like portion 25 can be reliably brought into contact with the inner box 2a. As a result, the sealing performance and heat insulation performance of the gasket 17 can be improved, and the amount of heat leakage can be suppressed.

  It should be noted that the other heat insulating doors, that is, the refrigerator compartment left door 8, the ice making compartment door 10, the switching compartment door 11, the freezing compartment door 12, and the vegetable compartment door 13 are also provided with a gasket having a similar configuration of this modification. Is possible.

Embodiment 2 FIG.
FIG. 7 is a partial perspective view of a gasket according to Embodiment 2 of the present invention. 7, the same components as those of the first embodiment described with reference to FIGS. 2 to 6 are denoted by the same reference numerals. In the following description, components using the same reference numerals as those of the first embodiment are also the same components as those of the first embodiment described with reference to FIGS. It is. Detailed description of the same components as those in the first embodiment will be omitted.

  The gasket 17 shown in FIG. 7 is a gasket attached to the refrigerator compartment right door 9 similarly to the gasket 17 described in the first embodiment. FIG. 7 shows the corner of the gasket 17, that is, the vicinity of the welded portion, from the inside of the refrigerator. The corner of the gasket 17 shown in FIG. 7 is a corner corresponding to the upper right corner of the refrigerator compartment right door 9.

  As described above, in the gasket 17 of the first embodiment, both ends of each side, which is a band-shaped member, are cut at an angle of approximately 45 degrees. The four corners 17a of the gasket 17 are formed by welding one end of the short side and one end of the long side by welding to form an angle of about 90 degrees. As in the first embodiment, in the second embodiment, each side of the gasket 17 is a band-shaped member. The difference from the first embodiment lies in the configuration of the bag-shaped portion 25. In FIG. 7, the horizontal side portion 25f is a side portion extending in the short direction, that is, the horizontal direction of the bag-shaped portion 25, and the vertical side portion 25g is a side portion extending in the longitudinal direction, that is, the vertical direction of the bag-shaped portion 25. As shown in FIG. 7, the end of the side part 25f does not extend to the corner 17a, and the bag-shaped part cut surface 25h is exposed. Similarly, the end of the vertical side portion 25g does not extend to the corner portion 17a, and the bag-shaped portion cut surface 25h is exposed. In other words, in the bag-like portion 25, the side portion 25f and the vertical side portion 25g are not connected to the corner portion 17a of the gasket 17, and a portion corresponding to the corner portion 17a is notched. In FIG. 7, a range 25 i in which the bag-shaped portion 25 in the corner portion 17 a is cut out is indicated by a broken line. Other configurations of the gasket 17 are the same as those of the first embodiment.

  Here, the effects of the second embodiment will be described with reference to FIGS. FIG. 8 is a perspective view of the upper part of the heat insulating box according to Embodiment 2 of the present invention. FIG. 9 is a perspective view showing the relative positional relationship between the corners of the heat insulating box and the gasket according to Embodiment 2 of the present invention. As shown in FIG. 8, the upper corners 27 and 28 of the inner box 2a of the heat insulating box 2 are provided with round shapes in order to improve moldability. Therefore, when the refrigerator compartment left doors 8 and 9 are assembled to the heat insulating box 2, the bag-like portion 25 is disposed so as to overlap the corner 27 of the inner box 2a as shown in FIG. In FIG. 9, the bag-like portion 25 is indicated by a broken imaginary line 32. Therefore, in the heat insulating box having a round shape at the corner 27 of the inner box 2a, if the outer periphery of the opening is closed by the gasket, the reaction force generated by the partial collapse of the gasket increases.

  When the gasket 17 is formed into a frame shape by welding, the corners 17a, which are joint portions, are hardened because the end faces of the respective sides constituting the frame are melted and connected. Therefore, it becomes a factor that hinders the assumed flexible movement of the gasket 17, particularly the movement of the bag-like portion 25. In addition, burrs may be generated during welding, and depending on the state of the burrs, the sealing performance may be deteriorated, or the door may not be closed and may be in a half-open state. That is, depending on the assembled state of the refrigerator 1, the gasket 17 may not be able to achieve the airtightness and heat insulation.

  According to the second embodiment, in the corner portion 17a of the gasket 17, the bag-like portion 25 is not connected to the horizontal side portion 25f and the vertical side portion 25g, and a portion corresponding to the corner portion 17a is notched. ing. Therefore, when assembling the refrigerator compartment left doors 8 and 9 to the heat insulating box 2, the bag-like portion 25 is prevented from overlapping the corner 27 of the inner box 2a, and the upper side 29, the right vertical side 30, and the left The vertical side 31 and the lower side (not shown) can be sealed. As a result, the sealing performance and the heat insulating performance of the gasket 17 can be improved without being influenced by individual differences of the products of the refrigerator 1, and the amount of heat leakage can be suppressed.

  In the gasket 17 according to the second embodiment, the corner corresponding to the lower right corner of the refrigerator compartment right door 9 shown in FIG. 1 may have the same configuration as the corner 17a in FIG. Also, the corners of the gaskets attached to each of the refrigerator compartment left door 8, the ice making compartment door 10, the switching compartment door 11, the freezing compartment door 12, and the vegetable compartment door 13 have the same configuration as the corner portion 17a in FIG. Have.

Embodiment 3 FIG.
As described above, in the first and second embodiments, the heat-insulating box 2 is sealed by adopting a configuration in which the reaction force generated when the bag-like portion 25 of the gasket 17 is crushed is reduced as much as possible. In the third embodiment, a configuration in which a door having a self-closing mechanism is used as the opening / closing door of the heat insulating box, and the sealing performance and the heat insulating performance of the gasket are further improved.

  As described above, due to variations in the molding of the components constituting the heat insulating box and the heat insulating door, or variations during assembly of the refrigerator, the contact amount between the bag-like portion of the gasket and the inner box of the heat insulating box is different from that of the refrigerator. Varies by individual. The reaction force generated at the bag-shaped portion when the bag-shaped portion of the gasket comes into contact with the inner box of the heat insulating box increases in proportion to the amount of contact with the inner box. Therefore, in order to close the opening of the heat insulating box with the door, it is necessary to increase the magnetic force of the magnet built in the gasket. However, there is a limit to the amount of magnetizable magnetizable depending on the size of the magnet. That is, when the bag-shaped portion and the inner box come into contact with each other, if a reaction force greater than the magnetic force of the magnet of the gasket is generated, the heat-insulating door cannot be completely closed.

  The heat-insulating door according to the third embodiment includes a magnet in the gasket and has a self-closing mechanism, and moves in a direction in which the heat-insulating door closes without an external force, rather than a reaction force generated in the bag-shaped portion of the gasket. It is configured so that the self-closing force, which is the force to be applied, increases. Hereinafter, the configuration of the heat insulating door of the third embodiment will be described in detail.

  As described above, the drawer-type doors such as the ice making room door 10, the switching room door 11, the freezing room door 12, and the vegetable room door 13 of Embodiment 1 are provided with a frame, and the frame is a heat insulating box. Are slidably supported by rails disposed on the inner side surface of the. In the third embodiment, a self-closing door is used as such a drawer-type door. That is, the rail is inclined so as to descend from the opening of the heat insulating box toward the rear surface. Furthermore, the drawer-type door is configured such that the closing force of the drawer-type door is larger than the reaction force when the bag-shaped portion of the gasket comes into contact with the heat-insulating box.

  With this configuration, even if no external force is applied, the drawer-type door is guided to the rail by its own weight acting in the vertical direction, and moves toward the back from the opening of the heat-insulating box. As a result, the opening of the heat insulating box is shielded. And, when the drawer-type door is self-closing, even if a reaction force occurs when the drawer-type door comes into contact with the heat-insulating box at the bag-shaped part of the gasket, the opening of the heat-insulating box is shielded by the weight of the drawer-type door. Can be. That is, the sealing performance and the heat insulating performance of the gasket can be realized without depending on the assembled state of the refrigerator. Also, if food is stored in the frame, the self-closing force of the drawer door will be greater due to the weight of the drawer door and the weight of the food in the frame, and the sealing performance and heat insulation performance of the gasket will be more reliable. And the amount of heat leakage can be suppressed.

  On the other hand, in the rotating doors such as the refrigerator compartment left door 8 and the refrigerator compartment right door 9 according to the first embodiment, the direction in which the self-closing force acts on the vertical direction, which is the direction in which the own weight acts, is the hinge axis. The rotation direction is centered on. Therefore, as the weight of the revolving door increases, the rotating operation of the revolving door increases. That is, as the self-weight of the revolving door increases, a greater self-closing force is required. Therefore, in order to provide a self-closing force greater than the reaction force generated in the bag-shaped portion of the gasket, the rotating door is required to be light in weight.

  With reference to FIG. 10, a configuration for reducing the weight of the revolving door according to the third embodiment, in other words, a configuration for achieving the self-closing force required for the revolving door will be described. FIG. 10 is a cross-sectional view showing the rotary door according to Embodiment 3 of the present invention by cutting at a position corresponding to line AA in FIG. 1.

  In order to maintain the strength of the main body of the revolving door, a metal reinforcing plate may be embedded inside the main body. In this case, when the entire thickness of the reinforcing plate is increased, the strength of the reinforcing plate is further increased. However, at the same time, the weight of the revolving door also increases, and the required self-closing force may not be provided.

  The inner plate 15 of the refrigerator compartment right door 9 has a flat portion 15A and an extension 15B that is bent outward of the refrigerator compartment right door 9 at an end of the flat portion 15A. The extension 15B extends along the thickness direction of the refrigerator compartment right door 9, and the plane 15A and the extension 15B intersect at an angle of about 90 degrees. The plate-like first reinforcing plate 33 is a member for reinforcing the strength of the refrigerator compartment right door 9. The first reinforcing plate 33 has a bonding portion 33A bonded to the flat portion 15A of the inner plate 15, and a side end portion 33B which is bent outward of the refrigerator compartment right door 9 at an end of the bonding portion 33A. are doing. The side end portion 33B is bent at an obtuse angle in the inner plate 15 of the refrigerator compartment right door 9 more than the angle formed by the flat portion 15A and the extending portion 15B. Therefore, a gap is formed between the extended portion 15B of the inner plate 15 and the side end 33B of the first reinforcing plate 33. At the side end 33B of the first reinforcing plate 33, a plate-like second reinforcing plate 34 is bonded to a surface of the inner plate 15 opposite to a surface facing the extension 15B. The thickness of the first reinforcing plate 33 and the thickness of the second reinforcing plate 34 are substantially the same.

  Reinforcing the extending portion 15B of the inner plate 15 of the refrigerator compartment right door 9 is a side end portion 33B of the first reinforcing plate 33 and a second reinforcing plate. On the other hand, only the bonding portion 33A of the first reinforcing plate 33 reinforces the flat portion 15A of the inner plate 15 of the refrigerator compartment right door 9. That is, as shown in FIG. 10, the thickness of the reinforcing member of the flat portion 15A of the inner plate 15 of the refrigerator compartment right door 9 is the same as the thickness of the reinforcing member of the extension 15B of the inner plate 15 of the refrigerator compartment right door 9. It is 1/2 of t.

  As described above, according to the third embodiment, the reinforcing member is provided over substantially the entire inner plate 15 of the refrigerator compartment right door 9, but the thickness of the reinforcing member of the flat portion 15A is increased. The thickness is reduced to half of the thickness of the reinforcing member of the protrusion 15B. That is, the refrigerating compartment right door 9 is reduced in weight while maintaining the reinforcing strength of the refrigerating compartment right door 9. Therefore, in reinforcing the strength of the refrigerator compartment right door 9, the self-closing force, which is a force that rotates in the rotation direction of the refrigerator compartment right door 9 indicated by a black arrow in FIG. 10, is not reduced. As a result, the sealing performance and the heat insulating performance of the gasket can be realized without depending on the assembly state of the refrigerator, and the amount of heat leakage can be suppressed.

  Note that the same effect can be obtained also in the refrigerator compartment left door 8 by providing the same reinforcing member as the first reinforcing plate 33 and the second reinforcing plate 34.

  DESCRIPTION OF SYMBOLS 1 Refrigerator, 2 heat insulation box, 2a inner box, 2b outer box, 2c front flange part, 3 refrigeration room, 4 ice making room, 5 switching room, 6 freezing room, 7 vegetable room, 8 refrigeration room left door, 9 refrigeration room Right door, 10 ice making room door, 11 switching room door, 12 freezing room door, 13 vegetable room door, 14 gap, 15 inner plate, 15A flat part, 15B extension part, 16 groove, 17 gasket, 17a corner part, 18 Magnet, 19 close contact portion, 20 locking portion, 21 outer wall portion, 22 inner wall portion, 23 hollow portion, 23a outer hollow portion, 23b outer hollow portion, 24 partition, 25 bag, 25a abutment Part, 25b warehouse outer root part, 25c warehouse inner root part, 25da groove, 25db groove, 25dc groove, 25dd groove, 25de groove, 25e shape part, 25f side part, 25g vertical side part, 25h bag-shaped part cut surface, 25i Range, 26 fins, 27 corners, 29 upper side, 30 right vertical side, 31 left vertical side, 32 imaginary line, 33 first reinforcing plate, 33A bonding portion, 33B side end portion, 34 second reinforcing plate, 41 First base, 42 Second base.

Claims (6)

A box having an opening;
A rectangular door that opens and closes the opening of the box,
A gasket attached to the outer edge so as to be along an outer edge that is an inner edge of the door,
A refrigerator configured such that the door is in close contact with the box body and closes the opening by a magnetic force of a magnet built in the gasket,
The gasket is
A first base extending along the outer edge of the door and located on the door side;
A second base extending along the outer edge of the door and located on the box side;
A locking portion formed at the first base portion so as to extend toward the door and locked to the door;
A hollow bag-like portion formed to extend toward the box body at the second base portion;
The bag-shaped part,
A pair of roots formed on a surface of the second base on the box body side, and a pair of roots located outside the refrigerator of the refrigerator among the pair of roots connected to the second base. When the door closes the opening of the box, the door has an abutting portion that contacts the box, and a pointed portion formed at a distal end opposite to the pair of roots. And
Said pair of root portion extends toward the box body along a direction perpendicular to the second base portion,
On the inner peripheral surface of the bag-shaped part, at least a part adjacent to the outer base of the refrigerator and a part of the pair of roots adjacent to the inner base of the refrigerator located inside the refrigerator are other parts. Each groove is formed thinner than
The pointed shape portion includes a compartment inner side surface, refrigerator distance between the side surface of Kurasotogawa be continuous to the contact portion so that gradually decreases toward the distal end, has a shape bent at an acute angle. The gasket is
The second base portion is formed on the inner side of the refrigerator than the bag-shaped portion,
The refrigerator according to claim 1, further comprising a fin-shaped portion formed to extend toward the box.   The said gasket is formed in a rectangular frame shape as a whole, The bag-shaped part is cut out in at least one corner part among four corner parts which define a frame shape. Refrigerator.   The door is a self-closing door configured to be able to close the opening of the box without applying external force, and is generated when the bag-shaped portion comes into contact with the box. The refrigerator according to any one of claims 1 to 3, wherein the self-closing force of the door is configured to be larger than the reaction force generated.   The door is a drawer-type door that moves in a direction in which the opening of the box body is closed by its own weight, and is configured such that the force acting on the door in the direction in which the door closes is greater than the reaction force. The refrigerator according to claim 4. The door is a rotatable door that is attached to the box so as to be rotatable around an axis extending in the vertical direction, and closes the opening of the box by its rotating force.
A reinforcing member is provided inside the door,
The reinforcing member is configured such that the total weight of the reinforcing member and the door does not reduce the rotational force of the door ,
The revolving door includes an inner plate having a flat portion and an extending portion that is bent outward of the revolving door at an end of the flat portion and extends along a thickness direction of the revolving door. ,
The reinforcing member has a first reinforcing plate and a second reinforcing plate,
The first reinforcing plate has an adhesive portion adhered to the flat portion of the inner plate, and a side end bent outward of the rotary door at an end of the adhesive portion. ,
The second reinforcing plate is adhered to a surface of the inner plate opposite to a surface facing the extending portion at the side end of the first reinforcing plate,
The refrigerator according to claim 4, wherein the first reinforcing plate and the second reinforcing plate have the same thickness .

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