TWI395696B - Cold box - Google Patents

Description

Cold box

The present invention relates to a structure of a cold storage box used for leisure in fishing or the like.

For example, a fisherman carries a cold storage box while fishing. The cold storage box is mainly used for the purpose of keeping the caught fish cold. Therefore, since the previous cold storage box is required to have high insulation. In order to improve the cooling resistance of the cold-insulation box, various improvements have been made in the past (for example, refer to Patent Document 1 to Patent Document 8).

In the cold-insulation container disclosed in Patent Document 1, the cover member is opened and closed and provided in the body forming the cold-insulation chamber. The cold keeping chamber is sealed by closing the lid member, and the fish or the like housed in the cold keeping chamber is stored. In order to reliably seal the cold insulation chamber, a gasket is placed under the cover member. That is, when the cover member is closed, the gap between the cover member and the body is filled by the gasket to seal the cold preservation chamber.

[Patent Document 1] JP-A-2002-145357 (Patent Document 3) JP-A-2002-120880 (Patent Document 4) JP-A-2001-354277 [Patent Document 5] Japanese Patent Laid-Open Publication No. 2001-299177 [Patent Document 6] Japanese Laid-Open Patent Publication No. 2000-7056 (Patent Document 7) Japanese Laid-Open Patent Publication No. 2000-4752 (Patent Document 8) -262535

The body or cover member is typically formed from a resin, typically polypropylene (PP). By using polypropylene as a material, the weight of the cold box can be easily achieved, and the material cost of the cold box can be reduced. However, a molded article made of a resin generally causes distortion. Therefore, when the cover member is closed, a gap is sometimes generated between the body and the cover member.

When the gap is small, since the lid member is made of a resin, when the lid member is closed, the above-mentioned distortion is caused by the bending of the lid member, whereby the cold chamber can be sealed. However, in order to realize the function of preserving fish, the shape of the cold-insulation box has to be a certain size or more. Therefore, the distortion of the body or the cover member as a molded article sometimes becomes considerable. Under such circumstances, it is sometimes difficult to offset the above-mentioned distortion by the bending of the cover. For example, when the cover member is formed into a rectangular shape and the long side portion thereof is sandwiched between the fixing members and the main body, the cover member is fixed to the main body while being elastically changed as a whole, and sometimes the short side of the cover member is attached. Part will float from the ontology. In order to prevent this, a fixture may be provided on the short side portion of the cover member, but in this case, the opening and closing action of the cover member becomes very troublesome.

However, in the case where the gap is small, the gap is filled by deformation of the gasket provided in the cover member. That is, the gasket is disposed such that it protrudes from the cover member, and when the cover member is closed, the gasket is disposed such that it is sandwiched between the body and the cover member, and is pressed into the gap. However, when the body or the cover member of the molded article has a large distortion, and a large gap is locally generated between the body and the cover member, in order to fill the gap, the gasket must be disposed so as to be larger from the cover member. protruding. In this manner, when the gasket is disposed such that it protrudes uniformly from the lid member, the smaller portion of the gap causes the gasket to be pressed and deformed extremely, and as a result, the lid member is closed for the fisherman. It becomes difficult. Further, with respect to the degree of distortion of the body or the cover member, it is also expected that a gap is left between the body and the cover member even if the gasket is provided.

In order to solve this problem, for example, the gasket may be formed of a foamed resin, and the expansion ratio may be set to be large. However, with such a countermeasure, the durability of the gasket is remarkably lowered, and the opening and closing gasket of the cover member may be damaged. Further, it is only necessary to form the main body and the cover member by making the distortion small, but it is impossible to make the distortion of the molded article disappear.

Accordingly, it is an object of the present invention to provide a cold-insulation box which can reliably fill a gap between a body and a cover member and maintain a high cooling effect without sacrificing the operability of the cover member.

(1) In order to achieve the above object, the cold-insulation box of the present invention includes: a cold-insulation box body having an upper surface provided with an opening and partitioning a cold-insulation chamber connected to the opening; and a cooling-cooling box body; a cover member that opens and closes; and an elastically deformable gasket that seals the cold-keeping chamber between the peripheral edge portion of the upper surface of the cold-proof box body and the cover member, and the cover member is closed; and When the opening is closed, the distance between the upper surface of the cold-insulation box body and the cover member is offset, and between the gasket and the cold-insulation box body or between the gasket and the cover member, the internal pressure is uniformly deformed. Internal pressure equalizer.

The material constituting the cold-retaining box body and the lid member is not particularly limited. However, in order to manufacture these materials at low cost, it is generally preferred to form the resin by a resin such as polypropylene. When the cold box body and the lid member are molded by resin as described above, the cold box body and the lid member which are molded articles are distorted. This distortion is caused by the fact that the distance between the peripheral portion of the upper opening and the cover member changes in a state in which the cover member closes the opening of the cold-insulation body. In other words, the gap between the peripheral edge portion of the opening of the cold-insulation container main body and the lid member does not coincide with the circumferential direction of the upper surface of the cold-preserving box main body, and the portion where the gap becomes large and the portion where the gap becomes smaller are present.

When the cover member closes the opening, the gasket is interposed between the cover member and the cold box body and abuts against the peripheral portion of the opening. Therefore, the cold storage chamber of the cold box body is sealed. As described above, since the distance between the peripheral edge portion of the opening of the general cold box body and the cover member is not constant, the portion where the distance is small is relatively strong when the cover member closes the opening, and the washer is relatively strongly pressed. In the portion where the distance is large, the gasket is relatively weakly pressed when the cover member closes the opening. Therefore, at the moment when the lid member closes the opening, the portion of the internal pressure equalizing body corresponding to the portion strongly pressed against the gasket, the internal pressure of the internal pressure equalizing body is locally increased, and, in contrast, the gasket The portion of the internal pressure equalizer corresponding to the weakly pressed portion, the internal pressure of the internal pressure equalizer is locally reduced.

The distribution of the internal pressure of the internal pressure equalizer is such that the internal pressure becomes equal and the internal pressure uniform is immediately deformed. That is, the internal pressure equalization system flows from a portion where the internal pressure is high to a lower portion. In other words, regardless of the distance between the peripheral edge portion of the opening of the cold-insulation box body and the cover member, the body will flow in order to offset the deviation of the distance from the internal pressure. In this case, if the internal pressure equalizer is disposed between the gasket and the cold box body, the internal pressure equalization system fills the gap created between the gasket and the cold box body. Further, if the internal pressure equalizer is disposed between the gasket and the cover member, the internal pressure equalization system fills the gap created between the gasket and the cover member. Therefore, even if the distance between the peripheral edge portion of the opening of the cold-insulation box body and the lid member is not constant, the deformed gasket of the internal pressure uniform body can be surely adhered to both the cold-retaining box body and the lid member. The cold room is indeed sealed.

(2) The cover member may have a ring-shaped peripheral groove that is open to the peripheral edge portion of the opening in a state in which the opening is closed in a state in which the opening is closed. The gasket is disposed in the surrounding groove in a state of protruding from the opening of the surrounding groove, and is slidably inserted into the surrounding groove so as to be able to advance and retreat in a depth direction of the surrounding groove, and the internal pressure uniform body is It is between the bottom surface of the surrounding groove and the gasket.

In this case, the gasket is fitted in a groove provided around the lid member, and the inner pressure uniform body is disposed as a seat member of the gasket at a depth of the peripheral groove. In other words, the gasket is inserted into the peripheral groove via the internal pressure uniform. Next, when the lid member closes the opening, the gasket protruding from the peripheral groove abuts against the peripheral edge portion of the opening of the cold box body, and seals the cold storage chamber. As described above, since the cold-retaining box body and the lid member which are the molded articles are generally warped, the distance between the peripheral edge portion of the opening and the bottom surface of the peripheral groove is not constant. In the portion where the distance is small, the gasket is relatively strongly pressed at the moment when the cover member is closed, and in the portion where the distance is large, the gasket is relatively weakly pressed at the moment of closing the cover member. Therefore, in the portion of the internal pressure equalizing body corresponding to the portion strongly pressed against the gasket at the moment of closing the cover member, the internal pressure of the internal pressure equalizing body is locally increased, and, in contrast, the gasket In the portion of the internal pressure equalizer corresponding to the portion that is weakly pressed, the internal pressure of the internal pressure equalizer is locally small.

As described above, the distribution of the internal pressure of the internal pressure equalizer is such that the internal pressure becomes equal and the internal pressure uniform body is immediately deformed. That is, the internal pressure equalization system flows from a portion where the internal pressure is high to a lower portion. In other words, regardless of the distance between the peripheral edge portion of the opening and the bottom surface of the peripheral groove, the internal pressure equalization system flows and fills the gap between the gasket and the bottom surface of the surrounding groove. Therefore, even if the distance between the peripheral edge portion of the opening and the bottom surface of the peripheral groove is not constant, the distance between the deformation washer of the internal pressure uniform body and the peripheral edge portion of the opening is constant, and therefore, the gasket can be The peripheral portion of the opening is pressed reliably and consistently.

(3) The internal pressure uniform body includes a liquid or gel-like core portion, and a flexible tubular bag that accommodates the core portion and is disposed along a longitudinal direction of the surrounding groove. Composition.

For the core, for example, a gelatinous polyurethane or the like can be used. Since the gel-like substance has a certain fluidity, it is preferable as a material constituting the core. However, a material having a more excellent fluidity, typically a grease or the like, may be used as a material constituting the core, or an oil or water having a very fluidity may be used as a material constituting the core. Further, by accommodating the core portion in the flexible tubular bag, the core portion can flow extremely quickly in the tubular bag.

(4) The above gasket is preferably a solid member.

Since the gasket has a solid structure, partial deformation such as lateral bending of the gasket can be prevented when the cover member is closed, and the gasket stably abuts against the peripheral portion of the opening.

(5) The tubular bag described above may be formed of a thin tube having an extension.

In this configuration, the core can easily flow in all directions. Therefore, the gasket abuts the peripheral edge portion of the opening more stably and uniformly.

(6) Further, in the peripheral portion of the opening on the upper surface of the heat-insulating box body, a circumferential groove formed in the upper surface of the opening is provided, and the gasket is protruded from the opening of the surrounding groove Disposed in the surrounding groove, and slidably inserted into the surrounding groove so as to advance and retreat in a depth direction of the surrounding groove, wherein the internal pressure equalizing body is between the bottom surface of the surrounding groove and the gasket .

In this case, the gasket is fitted in a groove provided around the body of the cold-insulation casing, and the internal pressure uniform body is disposed as a seat member of the gasket at a depth of the surrounding groove. In other words, the gasket is inserted into the peripheral groove via the internal pressure uniform. Next, when the lid member closes the opening of the cold preservation chamber, the gasket protruding from the peripheral groove abuts against the peripheral portion of the opening, and seals the cold insulation chamber. As described above, since the cold box body and the lid member which are the molded articles are generally warped, the distance between the lid member and the bottom surface of the surrounding groove is not constant. In the portion where the distance is small, the gasket is relatively strongly pressed at the moment when the cover member is closed, and in the portion where the distance is large, the gasket is relatively weakly pressed at the moment of closing the cover member. Therefore, in the portion of the internal pressure equalizing body corresponding to the portion strongly pressed against the gasket at the moment of closing the cover member, the internal pressure of the internal pressure equalizing body is locally increased, and, in contrast, the gasket In the portion of the internal pressure equalizer corresponding to the portion that is weakly pressed, the internal pressure of the internal pressure equalizer is locally small.

As described above, the distribution of the internal pressure of the internal pressure equalizer is such that the internal pressure becomes equal and the internal pressure uniform body is immediately deformed. That is, the internal pressure equalization system flows from a portion where the internal pressure is high to a lower portion. In other words, regardless of the distance between the cover member and the bottom surface of the surrounding groove, the internal pressure equalization system flows and fills the gap between the gasket and the bottom surface of the surrounding groove. Therefore, even if the distance between the cover member and the bottom surface of the surrounding groove is not constant, the distance between the deformation washer and the cover member of the internal pressure uniform body is also constant, so that the gasket can be reliably and uniformly pressed. For the cover member.

(7) The internal pressure uniform body includes a liquid or gel-like core portion, and a flexible tubular bag that accommodates the core portion and is disposed along a longitudinal direction of the surrounding groove. Composition.

For the core, for example, a gelatinous polyurethane or the like can be used. Since the gel-like substance has a certain fluidity, it is preferable as a material constituting the core. However, a material having a more excellent fluidity, typically a grease or the like, may be used as a material constituting the core, or an oil or water having a very fluidity may be used as a material constituting the core. Further, by accommodating the core portion in the flexible tubular bag, the core portion can flow extremely quickly in the tubular bag.

(8) The above gasket is preferably a solid member.

Since the gasket has a solid structure, partial deformation such as lateral bending of the gasket can be prevented when the cover member is closed, and the gasket stably abuts against the peripheral portion of the opening.

(9) The tubular bag described above may also be constructed of a thin tube having an extension.

In this configuration, the core can easily flow in all directions. Therefore, the gasket abuts the peripheral edge portion of the opening more stably and uniformly.

According to the present invention, by the internal pressure equalizer flow deformation, even if the distance between the cover member and the cold box body is not constant, the gasket between the cover member and the cold box body is equalized when the cover member is closed. The pressure is in contact with both. Therefore, even if the cold-retaining box body and the lid member which are the resin molded articles are distorted, the internal pressure uniform body is also flow-deformed to offset the distortion. As a result, the cold-keeping chamber of the cold-cooling box body can be simply and surely sealed by merely closing the cover member.

[Embodiment of the Invention]

Hereinafter, the present invention will be described in detail based on preferred embodiments while referring to appropriate drawings. Fig. 1 is a perspective view showing the appearance of a cold box according to an embodiment of the present invention. Fig. 2 is an enlarged perspective view of the main part of the cold box. The cold storage box 10 is used for leisure such as fishing, and can refrigerate fish or beverage water. The cold storage box 10 is provided with a main body 11 (cooling box main body), a lid member 12 that is opened and closed to the main body 11 , and a handle 13 that is provided on the main body 11 . Fig. 1 is a view showing a state in which the cover member 12 is closed, and Fig. 2 is a view showing a state in which the cover member 12 is opened. The handle 13 is rotatably provided to the main body 11, and is changeable between a posture in which it rises upward as shown in Fig. 1 and a posture in which it collapses as shown in Fig. 2 . The fisherman can hold the handle 13 up and carry it away, and when the cold storage box is placed on the coast or the like, the handle 13 can be lowered.

The body 11 is formed of a resin (typically polypropylene) and, as shown in the figure, has a substantially rectangular parallelepiped shape. Inside the body 11, a cold keeping chamber 14 is formed. The cold insulation chamber 14 is connected to the upper surface 15 of the body 11 as shown in Fig. 2, and an opening 16 is formed in the upper surface 15. The peripheral portion 17 of the opening 16 forms a sliding surface. As will be described later, when the lid member 12 is closed, the gasket 18 provided in the lid member 12 abuts against the peripheral edge portion 17, whereby the lid member 12 is in airtight contact with the body 11. Further, a heat insulating material is placed inside the wall 19 (the side wall and the bottom wall of the main body 11) that partitions the cooling chamber 14. The heat insulating material is a foamed resin which is typically foamed polyurethane or foamed plastic. However, it is also possible to apply a vacuum insulation board to a foaming resin.

The side portions and the rear side portions of the upper end portion of the body 11 are provided with recesses 20 and 21, respectively. The recessed portion 20 extends in the longitudinal direction of the front side edge portion and is recessed toward the thickness direction of the body 11. Next, a stay 22 is provided in the recess 20. The stay 22 is engaged with the lid member 12 as will be described later, and when the lid member 12 is closed, the lid member 12 is surely held in a closed state. Further, the recessed portion 21 has the same shape as the recessed portion 20, and a strut similar to the above-described stay 22 is disposed in the recessed portion 21. By providing the stays 22 at the front side portions and the rear side portions of the upper end portion of the main body 11, the cover member 12 can be opened and closed from the front side or the rear side. However, it is of course possible to provide the above-described stays 22 on either of the front side or the rear side of the body 11, and the cover member 12 is configured to be openable and closed only from either the front side or the rear side.

Fig. 3 is a sectional view taken along line III-III of Fig. 1.

As shown in FIGS. 1 and 3, the cover member 12 has a rectangular plate shape corresponding to the outer shape of the upper surface 15 of the body 11. The cover member 12 is provided with an outer frame 23 and an inner cover 24 that is fitted into the outer frame 23. The outer frame 23 and the inner cover 24 are formed of a resin (typically polypropylene) similarly to the main body 11.

As shown in FIGS. 2 and 3, the outer frame 23 is provided with an engaging claw 26 and a buckle 25. The engaging claws 26 are respectively provided at the edge portions on the front side and the rear side of the outer frame 23, and the engaging claws 26 are disposed at positions corresponding to the stays 22 of the body 11 when the cover member 12 is closed. . Therefore, when the cover member 12 is closed, the engaging claws 26 are engaged with the stays 22, and the closed state of the cover member 12 is maintained. Further, the buckle 25 is provided along the edge portion on the front side and the edge portion on the rear side of the outer frame 23, and the engagement of the engagement claws 26 with the stays 22 can be released. That is, when the buckle 25 is operated in a state in which the cover member 12 is closed, each of the engaging claws 26 is separated from the stay 22, and the engagement between the two is released, whereby the cover member 12 can be easily changed to the second The pose shown in the picture. Further, since the engagement claws 26, the buckle 25, and the strut 22 are known, the detailed description thereof will be omitted.

As shown in FIG. 3, the inner cover 24 is fitted inside the outer frame 23. The inner cover 24 is affixed to the outer frame 23 by bolts, for example. A heat insulating material is placed inside the inner cover 24. As the heat insulating material, for example, a foamed resin such as foamed polyurethane or foamed plastic is used. However, it is also possible to apply a vacuum insulation board to a foaming resin. An annular groove 27 (surrounding groove) is formed around the inner surface 28 of the inner lid 24. The groove 27 is provided at a position facing the peripheral edge portion 17 of the opening 16 of the body 11 when the cover member 12 is closed. As shown in Fig. 3, the groove 27 is opened on the inner surface 28 of the inner lid 24, that is, on the side of the peripheral portion 17.

Fig. 4 is an enlarged cross-sectional view of an essential part of the cold box 10, showing the structure of the body 11 and the cover member 12 in detail.

As shown in FIGS. 3 and 4, a gasket 18 is fitted in the groove 27, and a gap filler 30 (internal pressure uniform) is disposed between the gasket 18 and the bottom surface 29 of the groove 27. When the cover member 12 is closed, the inner cover 24 faces the upper surface 15 of the body 11, and the washer 18 is pressed against the peripheral edge portion 17 of the opening 16. Thereby, the opening 16 is closed, and the cold storage chamber 14 is sealed.

Fig. 5 is a V-arrow view of Fig. 4 showing the construction of the gap filler 30 and the gasket 18 in detail.

The gasket 18 has a rectangular cross-sectional shape and is formed in a strip shape as a whole. In the present embodiment, the gasket 18 is composed of an elastomer (typically, foamed ruthenium rubber, ethylene propylene triene copolymer (EPDM) or the like). The washer 18 has a solid construction. Although the effect of the gasket 18 having a solid structure will be described later, the gasket 18 may have a hollow structure.

The height dimension H of the washer 18 is set to a size corresponding to the depth of the groove 27. In short, the height dimension H of the washer 18 is set such that the upper end of the washer 18 protrudes only a few millimeters from the opening 31 of the groove 27 in a state in which the washer 18 is fitted into the groove 27. Further, the washer 18 is in a state of being fitted into the groove 27, and is slidable in the vertical direction in Fig. 5. Therefore, the washer 18 is retracted into the groove 27 by being pressed upward in FIG. Further, the gasket 18 may be formed in an elongated strip shape, fitted in the longitudinal direction of the groove 27, or may be formed in an endless loop and embedded in the groove 27.

The gap filler 30 is provided with a core portion 32 and a bag (tubular bag) 33. The gap filler 30 is formed into an elongated strip shape. As described above, the gap filler 30 is disposed on the gasket 18 in FIG. 5 and is disposed to fill the gap between the bottom surface 29 of the groove 27 and the gasket 18. The length of the gap filler 30 corresponds to the dimension of the groove 27 in the longitudinal direction, and the gap filler 30 is fitted into the groove 27 along the longitudinal direction of the groove 27. Therefore, in a state in which the gap filler 30 is fitted into the groove 27, both end portions of the gap filler 30 are opposed to each other in the groove 27 and abut against each other. However, the gap filler 30 may be formed into an endless loop and embedded in the groove 27.

In the present embodiment, the core portion 32 is a gel-like polyurethane. However, the material constituting the core portion 32 is not limited thereto, and a fluid substance such as grease, oil, or water may be used. Further, as the material constituting the core portion 32, a sticky substance such as a mucus may be used. In summary, the core 32 can be a gel, liquid or mucus having a certain fluidity and viscosity which is not compressible. Further, the bag 33 is made of a material having flexibility and is formed into a tubular shape. The core portion 32 is housed in the bag 33. In the present embodiment, the bag 33 is composed of a urethane sheet. The thickness of the urethane sheet constituting the bag 33 is set to 35 μm in the present embodiment, but the thickness may be set to about 5 μm to 50 μm. Thus, by accommodating the core portion 32 in the flexible bag 33, the core portion 32 can flow in all directions. In other words, the gap filler 30 flows and deforms the entire gel-like core portion 32 under uniform pressure.

In the cold-insulation container 10 of the present embodiment, as shown in Figs. 1 and 2, the cover member 12 opens and closes the main body 11. The fisherman can open the cover member 12 by operating the buckle 25 of the cover member 12, and by causing the cover member 12 to fall down, the engaging claws 26 of the cover member 12 can be engaged with the stay 22, and surely The cover member 12 is closed. Further, since the main body 11 and the lid member 12 are made of a resin such as polypropylene, there is an advantage that the cost of the constitution is low. However, since the main body 11 and the lid member 12 are formed of a resin such as polypropylene, the body 11 and the lid member 12 as a product are distorted.

For example, when the cover member 12 is distorted, the bottom surface 29 of the groove 27 is curved as shown in Fig. 4. Therefore, the distance S1 between the peripheral edge portion 17 of the opening 16 of the body 11 and the bottom surface 29 of the groove 27 of the cover member 12 changes in a state where the cover member 12 is closed to the body 11. That is, the distance S1 does not coincide with the longitudinal direction of the groove 27, and the distance S1 between the peripheral edge portion 17 of the opening 16 and the bottom surface 29 of the groove 27 differs depending on the portion of the groove 27. In this case, assuming that the gap filler 30 is not provided, the height of the gasket 18 protruding from the groove 27 changes in a state in which the gasket 18 is fitted into the groove 27. That is, the size of the gasket 18 that bulges from the groove 27 differs depending on the location of the groove 27. Therefore, when the cover member 12 is closed, the gasket 18 is strongly pressed against the peripheral edge portion 17 at a portion where the gasket 18 largely protrudes from the groove 27, and on the other hand, the gasket 18 is relatively grooved 27 from the groove 27. The portion where the small ground protrudes will press the washer 18 weakly against the peripheral portion 17. In the portion where the gasket 18 is weakly pressed against the peripheral edge portion 17, there is a possibility that the airtightness of the lid member 12 and the body 11 cannot be maintained. Further, when the gasket 18 is strongly pressed against the peripheral portion 17, the operation of closing the lid member 12 to the main body 11 may become difficult.

However, in the cold-storage case 10 of the present embodiment, since the gap filler 30 is provided, when the cover member 12 is closed, the gap filler 30 is relatively instantaneously formed at a portion where the distance S1 is small. The high pressure and, in addition, the portion where the distance S1 is large, the gap filler 30 is relatively low in a moment. That is, in the inside of the gap filling material 30, a portion where the internal pressure locally increases and a portion which becomes locally smaller are generated.

The gap filler 30 is deformed by the internal pressure of the gap filler 30 in such a manner that the internal pressure is uniformly deformed. That is, the gap filler 30 flows from a portion where the internal pressure is high to a lower portion, and regardless of the distance S1, the gap filler 30 is in the gap between the gasket 18 and the bottom surface 29 of the groove 27. Flow and fill. Therefore, even if the distance S1 is not constant, the distance S2 between the deformation washer 18 of the gap filler 30 and the peripheral edge portion 17 of the opening 16 becomes constant, so that the gasket 18 can be surely and consistently The peripheral portion 17 of the opening 16 is pressed. As a result, the main body 11 is reliably sealed by the lid member 12, and since the distance S2 is constant, the operation of opening and closing the lid member 12 becomes easy.

Further, in the present embodiment, the gap filler 30 is composed of a liquid or gel-like core portion 32 and a bag 33 accommodating the core portion 32. Therefore, the core portion 32 can be extremely closed at the moment of closing the cover member 12. It flows rapidly into the bag 33. Thereby, the gap filling material 30 can instantaneously fill the gap between the gasket 18 and the bottom surface 29 of the groove 27.

Further, in the present embodiment, since the washer 18 has a solid structure, it is possible to prevent partial deformation such as lateral bending of the washer 18 when the cover member 12 is closed. Therefore, the gasket 18 is stably abutted against the peripheral edge portion 17 of the opening 16, and the cover member 12 can surely seal the body 11.

Further, in the present embodiment, the bag 33 of the gap filler 30 is made of a thin polyurethane tube and is flexible. Therefore, the core portion 32 can easily flow in all directions, whereby the gasket 18 has an advantage of more stably and uniformly abutting the peripheral edge portion 17 of the opening 16.

In the present embodiment, the gap filler 30 is formed by incorporating the incompressible core portion 32 into the flexible bag 33. Therefore, in the manufacture of the gap filler 30, the amount (volume) of the core portion 32 incorporated in the bag 33 is an important management item, and the volume of the core portion 32 can be accurately grasped by the weight of the core portion 32. That is, even with the fluid core 32, the management of the volume is simple, and there is an advantage that the manufacturing cost of the gap filler 30 can be reduced.

Further, the material constituting the bag 33 is not limited to the urethane sheet, and for example, synthetic rubber may be used. The type of the synthetic rubber is not particularly limited, but may be an extensible material. When the synthetic rubber constituting the bag 33 is stretched, the core portion 32 can flow more smoothly in all directions by accommodating the core portion 32 in the bag 33. In other words, the bag 33 can be easily deformed regardless of the longitudinal direction or the direction perpendicular to the longitudinal direction, and as a result, the gel-like core portion 32 is flow-deformed under uniform pressure.

Thus, in the case where the bag 33 is composed of a material having an extensibility, the length of the gap filler 30 may be set to be shorter than the length of the groove 27 in the longitudinal direction. As described above, when the lid member 12 is closed, the internal pressure of the gap filler 30 changes, and the gap filler 30 deforms the internal pressure uniformly. That is, the gap filler 30 flows from a portion where the internal pressure is high to a lower portion, and regardless of the size of the distance S1 (refer to FIG. 4), the gap filler 30 is attached to the gasket 18 and the groove 27 described above. The gap of the bottom surface 29 flows and fills. At this time, since the bag 33 is highly extensible, the gap filler 30 extends in the longitudinal direction, and after the both ends are in close contact with each other, it is deformed in a direction perpendicular to the longitudinal direction, that is, in the height direction. Therefore, even if the distance S1 is not constant, the distance S2 between the washer 18 and the peripheral edge portion 17 of the opening 16 becomes constant by the deformation of the gap filler 30, so that the gasket 18 can be surely and consistently The peripheral portion 17 of the opening 16 is pressed.

Next, a modification of this embodiment will be described.

Fig. 6 is an enlarged cross-sectional view of an essential part of a cold-insulation box according to a modification of the embodiment.

The cold box 40 of the present modification differs from the cold box 10 of the above-described embodiment in that the cold box 10 is provided with a groove 27 in the lid member 12, and the gap filler 30 and the gasket 18 are fitted in the groove 27. On the other hand, in the cold-insulation box 40 of the present modification, the groove 27 is provided on the main body 11 side, and the gap filler 30 and the gasket 18 are fitted into the groove 27. Further, the other structure of the cold-insulation box 40 is the same as that of the above-described cold storage box 10.

As shown in the figure, in the cold box 40, an opening 16 is also provided in the upper surface 15 of the body 11. Next, the cold storage chamber 14 is formed in succession with the opening 16. The groove 27 is provided on the peripheral edge portion 17 of the opening 16. The groove 27 is formed to be cut downward so as to open on the upper surface 15, and is formed in a ring shape along the peripheral edge portion 17. A gap filler 30 is embedded in a portion deep in the groove 27, and a gasket 18 is disposed on the gap filler 30. The washer 18 protrudes only a few millimeters from the upper surface 15 as shown in the figure, and the gasket 18 abuts against the inner surface 42 of the cover member 12 by closing the cover member 12.

In the present modification, since the gap filler 30 is also provided, when the cover member 12 is closed, the distance S1 between the bottom surface 29 of the groove 27 and the inner surface 42 of the cover member 12 is small. Then, the gap filler 30 is relatively high in a moment, and when the distance S1 is large, the gap filler 30 is relatively low in a moment. That is, in the inside of the gap filling material 30, a portion where the internal pressure locally increases and a portion which becomes locally smaller are generated.

When the internal pressure of the gap filler 30 is changed, as described above, the gap filler 30 is such that the internal pressure thereof is uniformly deformed. That is, the gap filler 30 flows from a portion where the internal pressure is high to a lower portion, and regardless of the magnitude of the distance S1, the gap filler 30 flows in the gap between the gasket 18 and the bottom surface 29 of the groove 27. And fill it up. Therefore, even if the distance S1 is not constant, the distance S2 between the gasket 18 and the inner surface 42 of the cover member 12 becomes constant by the deformation of the gap filler 30, so that the gasket 18 can be surely and consistently The inner surface 42 of the cover member 12 is pressed. As a result, the main body 11 is reliably sealed by the lid member 12, and since the distance S2 is constant, the operation of opening and closing the lid member 12 becomes easy.

Next, other modifications of the embodiment will be described.

Fig. 7 is an enlarged cross-sectional view showing a gasket of another modification of the embodiment.

The gasket 45 of the present modification differs from the gasket 18 of the above-described embodiment in that the gasket 45 has a hollow structure and the core portion 32 is sealed inside. The material constituting the gasket 45 is composed of an elastomer such as foamed ruthenium rubber or ethylene propylene triene copolymer (EPDM). Further, as the material constituting the core portion 32, a gelatinous polyurethane may be used as described above. However, the material constituting the core portion 32 is not limited thereto, and a fluid substance such as a grease, oil, or water, or a viscous substance such as a mucus may be used. In summary, the core 32 can be a gel, liquid or mucus having a certain fluidity and viscosity which is not compressible.

As shown in Fig. 7, the washer 45 is provided with a pair of side wall portions 46 and 47, a thick bottom portion 48, and a top plate portion 49, and the core portion 32 is housed in the space 50 divided by the above. The side wall portions 46, 47 are thinner than the other portions. Since the core portion has fluidity as described above, it can be injected into the gasket 45 by a syringe or the like. Specifically, the needle of the syringe is inserted into the thick bottom 48, and the core 32 is injected into the above space 50. At this time, it is preferable to discharge the air pre-existing in the space 50 by, for example, another syringe. The washer 45 is fitted to the main body 11 or the cover member 12 as in the above-described embodiment and modification. However, in this case, the thick bottom portion 48 side is inserted into the groove 27 provided in the main body 11 or the cover member 12.

In the present modification, since the core portion 32 is housed in the gasket 45, in the assembly of the cold-insulation containers 10, 40, only a single member (that is, the gasket 45) can be incorporated in the body 11 or the cover member 12, so assembly is performed. The job becomes easy. Moreover, since it is not necessary to accommodate the bag 33 of the core portion 32, the number of parts can be reduced. Further, since the side wall portions 46, 47 of the gasket 45 are formed thinner than the thick bottom portion 48 and the top plate portion 49, the gasket 45 is easily bent, and the core portion 32 can quickly flow into the space 50.

[Industrial availability]

The present invention is applicable to a cold storage box used in leisure such as fishing.

10. . . Cold box

11. . . Ontology

12. . . Cover member

14. . . Cold room

15. . . Above the body

16. . . Opening of the body

17. . . Peripheral part

18. . . washer

19. . . wall

twenty four. . . Inner cover

27. . . Trench

28. . . Inner surface of inner cover

29. . . Bottom

30. . . Gap filling material

31. . . Groove opening

32. . . Core

33. . . bag

40. . . Cold box

42. . . inside

Fig. 1 is a perspective view showing the appearance of a cold box according to an embodiment of the present invention.

Fig. 2 is an enlarged perspective view of an essential part of a cold-insulation container according to an embodiment of the present invention.

Fig. 3 is a sectional view taken along line III-III of Fig. 1.

Fig. 4 is an enlarged cross-sectional view showing an essential part of a cold-insulation container according to an embodiment of the present invention.

Figure 5 is a V-arrow view of Figure 4.

Figure 6 is an enlarged cross-sectional view of an essential part of a cold-insulation box according to a modification of the embodiment of the present invention.

Fig. 7 is an enlarged cross-sectional view showing a gasket according to another modification of the embodiment of the present invention.

10. . . Cold box

11. . . Ontology

14. . . Cold room

15. . . Above the body

17. . . Peripheral part

18. . . washer

20. . . Concave

twenty four. . . Inner cover

27. . . Trench

29. . . Bottom

30. . . Gap filling material

Claims (5)

A cold storage box is provided with: a cold-proof box body having an upper surface provided with an opening and partitioning a cold-insulation chamber connected to the opening; and a cover member disposed on the cold-insulation box body and opening and closing the opening; and a cold-proof box a gasket that elastically deforms the cold-insulation chamber between the upper peripheral edge portion of the upper surface of the main body and the cover member in a state where the cover member closes the opening; and a cold-cooling box body that is generated when the cover member closes the opening The deviation between the upper surface and the cover member is offset between the gasket and the cold box body or between the gasket and the cover member, and the internal pressure is uniformly deformed by the flow of the internal pressure. . The cold-seal case according to the first aspect of the invention, wherein the cover member is formed to have an opening on a side of the peripheral edge portion of the opening in a state in which the opening is closed to a portion of the opening of the cold-storage box body. In the annular surrounding groove, the gasket is disposed in the peripheral groove in a state of protruding from the opening of the surrounding groove, and is slidably inserted into the surrounding groove so as to be movable forward and backward in the depth direction of the surrounding groove. The internal pressure equalizer is interposed between the bottom surface of the surrounding groove and the gasket. The cold box of claim 1 or 2, wherein the internal pressure equalizer has a liquid or gel-like core; and the core is received and along the long side of the surrounding groove Directional configuration Tubular bag with flexibility. The cold box of claim 1 or 2, wherein the washer is a solid member. The cold box of claim 3, wherein the washer is a solid member.