JP2007289058A - Cooler box - Google Patents

Abstract

A cooler box that reliably fills a gap between a main body and a lid member without sacrificing operability of the lid member and exhibits a high cold insulation effect.
The cooler box has a main body and a lid member. A packing 18 is provided on the lid member 12. The packing 18 is pressed against the peripheral edge 17 of the opening 16 of the main body 11 when the lid member 12 is closed. The packing 18 is fitted in a groove 27 provided in the lid member 12. A gap filler 30 is interposed between the bottom surface 29 of the groove 27 and the packing 18. The gap filling material 30 includes a gel-like core and a urethane tube that accommodates the gel-like core.
[Selection] Figure 4

Description

  The present invention relates to a structure of a cooler box used for leisure such as fishing.

  For example, a fisherman carries a cooler box when fishing. The cooler box is a container mainly intended to keep fish caught in a cold storage. Therefore, conventionally, a cooler box is required to have a high cooling capacity. Various improvements have been made in the past in order to increase the cooling capacity of the cooler box (see, for example, Patent Documents 1 to 8).

  In the cooler box disclosed in Patent Document 1, a lid member is provided to be freely openable and closable on a main body in which a cold insulation chamber is formed. By closing the lid member, the cold insulation chamber is sealed, and fish and the like housed in the cold insulation chamber are stored. A packing is provided on the lower surface of the lid member to ensure that the cold chamber is sealed. That is, when the lid member is closed, the cold insulation chamber is sealed by the packing filling the gap between the lid member and the main body.

JP 2005-253376 A JP 2002-145357 A JP 2002-120880 A JP 2001-354277 A JP 2001-299177 A JP 2000-7056 A JP 2000-4752 A Japanese Patent Laid-Open No. 10-262535

  The main body and the lid member are generally formed of resin, typically polypropylene (PP). By adopting polypropylene as the material, the weight of the cooler box can be easily reduced, and the material cost of the cooler box can be reduced. By the way, in general, a molded article made of resin is distorted. For this reason, when the lid member is closed, a gap may be formed between the main body and the lid member.

  When this gap is small, the lid member is made of resin, so that when the lid member is closed, the distortion is offset by the bending of the lid member, and thus the cold insulation chamber can be sealed. However, since the cooler box must have a certain size or more in order to realize the function of storing fish, the distortion of the main body and lid member as a molded product may be considerably large. is there. In such a case, it may be impossible to cancel the distortion due to the bending of the lid. For example, in the case where the lid member is formed in a rectangular shape and the long side portion is fixed to the main body via a fixture, the lid member is fixed to the main body while being largely elastically deformed as a whole. The short side portion of the lid member may be lifted from the main body. In order to prevent this, it is sufficient that a fixing tool is provided also on the short side portion of the lid member. However, in this case, the opening and closing action of the lid member becomes very troublesome.

  However, when the gap is small, the gap is filled by deformation of the packing provided on the lid member. That is, the packing is provided so as to protrude from the lid member, and when the lid member is closed, the packing is sandwiched between the main body and the lid member and is arranged to be pushed into the gap. However, when the main body or the lid member as a molded product is greatly distorted and a large gap is locally generated between the main body and the lid member, the packing may protrude greatly from the lid member to fill the gap. Must be provided. Thus, when the packing is provided so as to protrude uniformly and greatly from the lid member, the packing is extremely pressed and deformed in the portion where the gap is small, and as a result, the work of closing the lid member for the angler. It becomes difficult. Further, depending on the degree of distortion of the main body or the lid member, a gap may be expected to remain between the main body and the lid member even if the packing is provided.

  In order to solve this problem, for example, the packing may be made of a foamed resin, and the foaming ratio may be set large. However, with such measures, the durability of the packing is remarkably reduced, and the packing may be damaged by repeatedly opening and closing the lid member. In addition, the main body and the lid member may be formed so as to reduce the distortion in the first place, but it is impossible to eliminate the distortion of the molded product.

  Therefore, an object of the present invention is to provide a cooler box that reliably fills the gap between the main body and the lid member without sacrificing the operability of the lid member and maintains a high cold insulation effect.

  (1) In order to achieve the above object, a cooler box according to the present invention has an upper surface provided with an opening, and is provided in a cooler box body in which a cold insulation chamber that is continuous with the opening is partitioned, and the cooler box body. The lid member that opens and closes the opening, and is interposed between the opening peripheral portion of the upper surface of the cooler box body and the lid member, and is elastically deformable to seal the cold-reserving chamber with the lid member closed. And between the packing and the cooler box body or between the packing and the lid member in order to offset the deviation of the distance between the upper surface of the cooler box body and the lid member that occurs when the lid member closes the opening. And an internal pressure equalizing body that can be deformed so that the internal pressure is uniform.

  Although the material which comprises a cooler box main body and a cover member is not specifically limited, In order to manufacture these at low cost, generally it is preferable to shape | mold by polypropylene and other resin. As described above, when the cooler box body and the lid member are molded of resin, distortion occurs in the cooler box body and the lid member as a molded product. Due to this distortion, the distance between the upper surface of the cooler box body, specifically, the peripheral edge of the opening on the upper surface, and the lid member changes with the cover member closing the opening of the cooler box body. . That is, the gap between the peripheral portion of the opening of the cooler box body and the lid member is not uniform in the circumferential direction of the upper surface of the cooler box body, and there are a portion where the gap is large and a portion where the gap is small.

  When the lid member closes the opening, the packing is interposed between the lid member and the cooler box body and abuts on the peripheral edge of the opening. Therefore, the cool box of the cooler box body is sealed. As described above, since the distance between the peripheral edge of the opening of the cooler box body and the lid member is generally not constant, the packing is relatively performed when the lid member closes the opening at a portion where the distance is small. In a portion where the distance is large and the distance is large, the packing is relatively weakly pressed when the lid member closes the opening. Therefore, at the moment when the lid member closes the opening, at the portion of the internal pressure equal body corresponding to the portion where the packing is relatively strongly pressed, the internal pressure of the internal pressure equal body is locally increased, and the packing is In the portion of the internal pressure equal body corresponding to the relatively weakly pressed portion, the internal pressure of the internal pressure equal body is locally reduced.

  Such an internal pressure distribution of the internal pressure equal body immediately deforms the internal pressure equal body so that the internal pressure becomes equal. That is, the internal pressure equal body flows from a portion where the internal pressure is high to a low portion. In other words, regardless of the distance between the peripheral edge of the opening of the cooler box body and the lid member, the internal pressure equalizing body flows to offset the deviation of the distance. In this case, if the internal pressure equalizing body is disposed between the packing and the cooler box main body, the internal pressure equalizing body fills a gap generated between the packing and the cooler box main body. Moreover, if the internal pressure equal body is arrange | positioned between a packing and a cover member, an internal pressure equal body will fill the clearance gap produced between a packing and a cover member. Thus, even if the distance between the peripheral edge of the opening of the cooler box body and the lid member is not constant, the packing is securely adhered to both the cooler box body and the lid member due to the deformation of the internal pressure equal body, and the cold insulation Ensure that the chamber is sealed.

  (2) The lid member includes a circumferential groove formed in an annular shape opening on the opening peripheral edge side in a portion facing the opening peripheral edge of the cooler box body with the opening closed, and the packing is And is disposed in the circumferential groove in a state of protruding from the opening of the circumferential groove, and is slidably fitted in the circumferential groove so as to be able to advance and retract in the depth direction of the circumferential groove. The body may be interposed between the bottom surface of the circumferential groove and the packing.

  In this case, the packing is fitted in a circumferential groove provided in the lid member, and the internal pressure equalizing body is disposed as a seat member of the packing in the inner part of the circumferential groove. That is, the packing is fitted into the circumferential groove via the internal pressure equal body. And when a cover member closes the said opening, the packing which protruded from the said surrounding groove contact | abuts to the peripheral part of the opening of a cooler box main body, and the said cold storage chamber is sealed. As described above, since the cooler box main body and the lid member as a molded product are generally distorted, the distance between the peripheral edge portion of the opening and the bottom surface of the peripheral groove is not constant. In a portion where the distance is small, the packing is relatively strongly pressed when the lid member is closed, and in a portion where the distance is large, the packing is pressed relatively weakly when the lid member is closed. Therefore, at the moment when the lid member is closed, the internal pressure equal body corresponding to the portion where the packing is pressed relatively strongly, the internal pressure of the internal pressure equal body is locally increased, and the packing is relatively In the portion of the internal pressure equal body corresponding to the portion pressed weakly, the internal pressure of the internal pressure equal body is locally reduced.

  As described above, the internal pressure distribution of such an internal pressure equal body immediately deforms the internal pressure equal body so that the internal pressure becomes equal. That is, the internal pressure equal body flows from a portion where the internal pressure is high to a low portion. In other words, regardless of the distance between the peripheral edge of the opening and the bottom surface of the circumferential groove, the internal pressure equalizing body flows and fills the gap between the packing and the bottom surface of the circumferential groove. Thereby, 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 packing and the peripheral edge portion of the opening becomes constant due to the deformation of the internal pressure equalizing body. It is reliably and uniformly pressed against the peripheral edge of the opening.

  (3) The internal pressure equal body includes a liquid or gel-like core, and a flexible tube-like bag that accommodates the core and is disposed along the longitudinal direction of the circumferential groove. The

  As the core, for example, gel-like polyurethane or the like may be employed. A gel-like substance is preferable as a material constituting the core because it has a certain fluidity. However, a substance having excellent fluidity, typically grease or the like, may be adopted as a material constituting the core, or oil or water having extremely high fluidity may be adopted as a material constituting the core. Further, since the core is accommodated in the tube bag having flexibility, the core can flow very rapidly in the tube bag.

  (4) The packing is preferably a solid member.

  Since the packing has a solid structure, buckling and other local deformation of the packing are prevented when the lid member is closed, and the packing stably contacts the peripheral edge of the opening.

  (5) The tubular bag may be composed of a thin-walled tube having high ductility.

  In this configuration, the core can easily flow in any direction. Therefore, the packing and the peripheral edge portion of the opening are in contact with each other more stably and uniformly.

  (6) In addition, a circumferential groove formed in an annular shape that opens to the upper surface is provided at a peripheral portion of the opening on the upper surface of the cooler box body, and the packing protrudes from the opening of the circumferential groove. It is arranged in the circumferential groove and is slidably fitted in the circumferential groove so that it can advance and retreat in the depth direction of the circumferential groove. It may be interposed between the two.

  In this case, the packing is fitted into a circumferential groove provided in the cooler box main body, and the internal pressure equal body is disposed as a seat member of the packing inside the circumferential groove. That is, the packing is fitted into the circumferential groove via the internal pressure equal body. When the lid member closes the opening of the cold insulation chamber, the packing protruding from the circumferential groove comes into contact with the peripheral edge of the opening, and the cold insulation chamber is sealed. As described above, generally, distortion occurs in the cooler box body and the lid member as a molded product, and therefore the distance between the lid member and the bottom surface of the circumferential groove is not constant. In a portion where the distance is small, the packing is relatively strongly pressed when the lid member is closed, and in a portion where the distance is large, the packing is pressed relatively weakly when the lid member is closed. Therefore, at the moment when the lid member is closed, the internal pressure equal body corresponding to the portion where the packing is pressed relatively strongly, the internal pressure of the internal pressure equal body is locally increased, and the packing is relatively In the portion of the internal pressure equal body corresponding to the portion pressed weakly, the internal pressure of the internal pressure equal body is locally reduced.

  As described above, the internal pressure distribution of such an internal pressure equal body immediately deforms the internal pressure equal body so that the internal pressure becomes equal. That is, the internal pressure equal body flows from a portion where the internal pressure is high to a low portion. In other words, regardless of the distance between the lid member and the bottom surface of the circumferential groove, the internal pressure equalizing body flows and fills the gap between the packing and the bottom surface of the circumferential groove. As a result, even if the distance between the lid member and the bottom surface of the circumferential groove is not constant, the distance between the packing and the lid member becomes constant due to the deformation of the internal pressure equalizing body, and therefore the packing is surely attached to the lid member. Pressed uniformly.

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

  As the core, for example, gel-like polyurethane or the like may be employed. A gel-like substance is preferable as a material constituting the core because it has a certain fluidity. However, a substance having excellent fluidity, typically grease or the like, may be adopted as a material constituting the core, or oil or water having extremely high fluidity may be adopted as a material constituting the core. Further, since the core is accommodated in the tube bag having flexibility, the core can flow very rapidly in the tube bag.

  (8) The packing is preferably a solid member.

  Since the packing has a solid structure, buckling and other local deformation of the packing are prevented when the lid member is closed, and the packing stably contacts the peripheral edge of the opening.

  (9) The tubular bag may be composed of a thin-walled tube having high ductility.

  In this configuration, the core can easily flow in any direction. Therefore, the packing and the peripheral edge portion of the opening are in contact with each other more stably and uniformly.

  According to the present invention, even if the distance between the lid member and the cooler box main body is not constant due to the flow deformation of the internal pressure equalization body, the lid member and the cooler box main body are closed when the lid member is closed. The packing interposed between the two abuts against both with uniform pressure. Therefore, even if the cooler box main body and the lid member as the resin molded product are distorted, the internal pressure equalizing body is fluidly deformed so as to cancel out the distortion. As a result, the cold chamber of the cooler box body is simply and reliably sealed only by closing the lid member.

  Hereinafter, the present invention will be described in detail based on preferred embodiments with appropriate reference to the drawings.

  FIG. 1 is an external perspective view of a cooler box according to an embodiment of the present invention. FIG. 2 is an enlarged perspective view of a main part of the cooler box.

  The cooler box 10 is used for leisure such as fishing and can refrigerate fish and drinking water. The cooler box 10 includes a main body 11 (cooler box main body), a lid member 12 provided on the main body 11 so as to be openable and closable, and a handle 13 provided on the main body 11. FIG. 1 illustrates a state where the lid member 12 is closed, and FIG. 2 illustrates a state where the lid member 12 is opened. The handle 13 is rotatably provided on the main body 11 and can change between a posture standing up as shown in FIG. 1 and a posture lying down as shown in FIG. The angler can raise the handle 13 to carry the cooler box 10 while holding the handle 13, and when the cooler box is placed on a bag or the like, the handle 13 can fall down.

  The main body 11 is formed of a resin (typically polypropylene), and has a substantially rectangular parallelepiped shape as shown in FIG. A cold room 14 is formed inside the main body 11. As shown in FIG. 2, the cold chamber 14 is continuous with the upper surface 15 of the main body 11 and has an opening 16 formed in the upper surface 15. The peripheral edge 17 of the opening 16 is formed on a smooth surface. As will be described later, when the lid member 12 is closed, the packing 18 provided on the lid member 12 abuts on the peripheral edge portion 17, whereby the lid member 12 comes into contact with the main body 11 in an airtight manner. It will be. In addition, a heat insulating material is sealed inside a wall 19 (a side wall and a bottom wall of the main body 11) that partitions the cold insulation chamber 14. As this heat insulating material, typically, polyurethane foam, polystyrene foam or other foamed resin is employed. However, a vacuum heat insulation panel may be arranged in addition to the foamed resin.

  Concave portions 20 and 21 are provided in the front side portion and the rear side portion of the upper end portion of the main body 11, respectively. The recess 20 extends in the longitudinal direction of the front side portion and is recessed in the thickness direction of the main body 11. A stay 22 is provided in the recess 20. The stay 22 is adapted to engage the lid member 12 as will be described later, and reliably holds the lid member 12 in the closed state when the lid member 12 is closed. The recess 21 has the same shape as the recess 20, and a stay similar to the stay 22 is disposed in the recess 21. By providing stays 22 on the front side and the rear side of the upper end of the main body 11, the lid member 12 can be opened and closed from either the front side or the rear side. However, the stay 22 may be provided on either the front side or the rear side of the main body 11, and the lid member 12 may be configured to be opened and closed only from either the front side or the rear side. Of course.

  3 is a cross-sectional view taken along the line III-III in FIG.

  As shown in FIGS. 1 and 3, the lid member 12 is formed in a rectangular plate shape corresponding to the outer shape of the upper surface 15 of the main body 11. The lid member 12 includes an outer frame 23 and an inner lid 24 fitted into the outer frame 23. The outer frame 23 and the inner lid 24 are formed of resin (typically polypropylene) in the same manner as the main body 11.

  As shown in FIGS. 2 and 3, the outer frame 23 includes an engaging claw 26 and a knob 25. The engaging claws 26 are provided at the front edge portion and the rear edge portion of the outer frame 23, respectively, and each engaging claw 26 corresponds to the stay 22 of the main body 11 when the lid member 12 is closed. It is arranged at the position to do. Therefore, when the lid member 12 is closed, the engaging claw 26 engages with the stay 22 and the closed state of the lid member 12 is maintained. The knob 25 is provided along the front edge and the rear edge of the outer frame 23, respectively, so that the engagement between the engagement claws 26 and the stay 22 can be released. That is, when the knob 25 is operated in a state in which the lid member 12 is closed, the respective engaging claws 26 are separated from the stays 22 and the engagement between the two is released. The posture shown in FIG. 2 can be changed. In addition, since the structure of the said engaging claw 26, the knob 25, and the said stay 22 is known, these detailed description is abbreviate | omitted.

  As shown in FIG. 3, the inner lid 24 is fitted inside the outer frame 23. The inner lid 24 can be fastened to the outer frame 23 by screws, for example. A heat insulating material is sealed inside the inner lid 24. As this heat insulating material, for example, polyurethane foam, polystyrene foam or other foamed resin is employed. However, a vacuum heat insulation panel may be arranged in addition to the foamed resin. An annular groove 27 (circumferential 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 17 of the opening 16 of the main body 11 when the lid member 12 is closed. As shown in FIG. 3, the groove 27 opens on the inner surface 28 of the inner lid 24, that is, on the peripheral edge 17 side.

  FIG. 4 is an enlarged cross-sectional view of the main part of the cooler box 10 and shows the structure of the main body 11 and the lid member 12 in detail.

  As shown in FIGS. 3 and 4, the packing 18 is fitted into the groove 27, and a gap filler 30 (internal pressure equal body) is disposed between the packing 18 and the bottom surface 29 of the groove 27. . When the lid member 12 is closed, the inner lid 24 faces the upper surface 15 of the main body 11, and the packing 18 is pressed against the peripheral edge portion 17 of the opening 16. Thereby, the said opening 16 is obstruct | occluded and the cold insulation chamber 14 is sealed.

  FIG. 5 is a V-arrow view in FIG. 4 and shows the structure of the gap filler 30 and the packing 18 in detail.

  The packing 18 has a rectangular cross-sectional shape and is formed in a band shape as a whole. In the present embodiment, the packing 18 is made of an elastic body (typically, foamed silicone rubber, ethylene propylene diene terpolymer (EPDM), or the like). The packing 18 has a solid structure. Although the effect by the packing 18 having a solid structure will be described later, the packing 18 may have a hollow structure.

  The height dimension H of the packing 18 is set to a dimension corresponding to the depth of the groove 27. In short, the height dimension H of the packing 18 is set so that the upper end of the packing 18 protrudes from the opening 31 of the groove 27 by a few millimeters in a state where the packing 18 is fitted in the groove 27. Further, the packing 18 can be slid in the vertical direction in FIG. 5 while being fitted in the groove 27. Therefore, the packing 18 can be retracted into the groove 27 by being pressed upward in FIG. The packing 18 may be formed in an elongated band shape and may be fitted along the longitudinal direction of the groove 27, or may be formed in an endless annular shape and fitted in the groove 27.

  The gap filling material 30 includes a core 32 and a bag 33 (tubular bag). The gap filler 30 is formed in an elongated strip shape. As described above, the gap filler 30 is disposed on the packing 18 in FIG. 5 and is disposed so as to fill the gap between the bottom surface 29 of the groove 27 and the packing 18. The length dimension of the gap filler 30 corresponds to the longitudinal dimension of the groove 27, and the gap filler 30 is fitted in the groove 27 along the longitudinal direction of the groove 27. Therefore, in a state where the gap filler 30 is fitted in the groove 27, both end portions of the gap filler 30 face each other in the groove 27. However, the gap filler 30 may be formed in an endless annular shape and fitted into the groove 27.

  In the present embodiment, gel-like polyurethane is employed for the core 32. But the material which comprises the core 32 is not limited to this, The substance which has fluidity | liquidity, such as grease, oil, water, can be employ | adopted. Further, slime and other viscous substances may be employed as the material constituting the core 32. In short, the core 32 may be an incompressible gel, liquid or slime having a certain fluidity and viscosity. The bag 33 is made of a flexible material and is formed in a tube shape. The core 32 is accommodated in the bag 33. In the present embodiment, the bag 33 is made of a urethane sheet. Although the thickness dimension of the urethane sheet which comprises the bag 33 is set to 35 micrometers in this embodiment, this thickness dimension can be set to about 5 micrometers-50 micrometers. Thus, the core 32 can flow in any direction by being accommodated in the flexible bag 33. In other words, the gap filler 30 flows and deforms so that the entire gel core 32 has a uniform pressure.

  In the cooler box 10 according to the present embodiment, the lid member 12 opens and closes with respect to the main body 11 as shown in FIGS. The angler can open the lid member 12 by operating the knob 25 of the lid member 12, and when the lid member 12 is laid down, the engaging claw 26 of the lid member 12 engages with the stay 25, and the lid member 12 12 is securely closed. Further, since the main body 11 and the lid member 12 are made of polypropylene or other resin, there is an advantage that they are configured at low cost. However, when the main body 11 and the lid member 12 are molded from a resin such as polypropylene, distortion occurs in the main body 11 and the lid member 12 as products.

  For example, when the cover member 12 is distorted, the bottom surface 29 of the groove 27 is curved as shown in FIG. For this reason, the distance S <b> 1 between the peripheral edge portion 17 of the opening 16 of the main body 11 and the bottom surface 29 of the groove 27 of the lid member 12 changes in a state where the lid member 12 is closed with respect to the main body 11. That is, the distance S1 is not uniform in 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, if the gap filler 30 is not provided, the height at which the packing 18 protrudes from the groove 27 changes in a state where the packing 18 is fitted in the groove 27. That is, the size of the packing 18 protruding from the groove 27 varies depending on the portion of the groove 27. For this reason, when the lid member 12 is closed, the packing 18 is strongly pressed against the peripheral edge portion 17 at a portion where the packing 18 protrudes greatly from the groove 27, while at the portion where the packing 18 protrudes small from the groove 27. The packing 18 is weakly pressed against the peripheral edge 17. There is a possibility that the airtightness between the lid member 12 and the main body 11 may not be maintained at a portion where the packing 18 is weakly pressed against the peripheral edge portion 17. Moreover, when the site | part where the packing 18 is strongly pressed by the said peripheral part 17 arises, there exists a possibility that the operation | work which closes the cover member 12 to the main body 11 may become difficult.

  However, since the gap filler 30 is provided in the cooler box 10 according to the present embodiment, when the lid member 12 is closed, the gap filler 30 is instantaneously generated at a portion where the distance S1 is small. Becomes a relatively high pressure, and the gap filling member 30 instantaneously becomes a relatively low pressure at a portion where the distance S1 is large. That is, a part where the internal pressure is locally increased and a part where the internal pressure is locally reduced are generated inside the gap filling member 30.

  As the internal pressure of the gap filler 30 changes in this manner, the gap filler 30 is deformed so that the internal pressure becomes uniform. That is, the gap filler 30 flows from a portion where the internal pressure is high to a low portion, and the gap filler 30 flows in the gap between the packing 18 and the bottom surface 29 of the groove 27 regardless of the size of the distance S1. Fill. As a result, even if the distance S1 is not constant, the distance S2 between the packing 18 and the peripheral edge portion 17 of the opening 16 becomes constant due to the deformation of the gap filling material 30. It is surely and evenly pressed against the part 17. As a result, the main body 11 is reliably sealed by the lid member 12, and the distance S <b> 2 is constant, so that the operation of opening and closing the lid member 12 is facilitated.

  Further, in the present embodiment, the gap filler 30 includes a liquid or gel-like core 32 and a bag 33 that accommodates the core 32, so that the core 32 moves inside the bag 33 at the moment when the lid member 12 is closed. It can flow very quickly. Thereby, the gap filler 30 can instantaneously fill the gap between the packing 18 and the bottom surface 29 of the groove 27.

  Furthermore, in this embodiment, since the packing 18 has a solid structure, buckling and other local deformations of the packing 18 are prevented when the lid member 12 is closed. Therefore, the packing 18 stably contacts the peripheral edge 17 of the opening 16, and the main body 11 is securely sealed by the lid member 12.

  In addition, in the present embodiment, the bag 33 of the gap filling material 30 is made of a thin polyurethane tube and is highly flexible. Therefore, the core 32 can easily flow in all directions, and this has the advantage that the packing 18 and the peripheral edge portion 17 of the opening 16 abut more stably and uniformly.

  In the present embodiment, the gap filler 30 is configured by enclosing a core 32 exhibiting incompressibility in a bag 33 having flexibility. Therefore, where the amount (volume) of the core 32 enclosed in the bag 33 is an important management item in the production of the gap filler 30, the volume of the core 32 can be accurately grasped by the weight of the core 32. That is, even if the core 32 is rich in fluidity, the volume can be easily managed, and the manufacturing cost of the gap filler 30 can be reduced.

  In addition, the material which comprises the said bag 33 is not limited to a urethane sheet, For example, a synthetic rubber can be employ | adopted. The type of synthetic rubber is not particularly limited, but may be rich in ductility. When the synthetic rubber constituting the bag 33 is rich in ductility, the core 32 can be more smoothly flowed in all directions by being accommodated in the bag 33. In other words, the bag 33 can be easily deformed both in the longitudinal direction and in a direction orthogonal to the longitudinal direction, and as a result, the entire gel-like core 32 flows and deforms to have a uniform pressure.

  When the bag 33 is made of a material having high ductility as described above, the length dimension of the gap filler 30 may be set slightly shorter than the longitudinal dimension of the groove 27. As described above, when the internal pressure of the gap filler 30 changes when the lid member 12 is closed, the gap filler 30 is deformed so that the internal pressure becomes equal. In other words, the gap filler 30 flows from a site where the internal pressure is high to a site where the internal pressure is low, and regardless of the distance S1 (see FIG. 4), the gap filler 30 has the packing 18 and the bottom surface 29 of the groove 27. To fill and fill the gap. At this time, since the bag 33 is rich in ductility, the gap filler 30 extends in the longitudinal direction, and after both ends are brought into close contact with each other, it is deformed in a direction perpendicular to the longitudinal direction, that is, in the height direction. As a result, even if the distance S1 is not constant, the distance S2 between the packing 18 and the peripheral edge portion 17 of the opening 16 becomes constant due to the deformation of the gap filling material 30. It is surely and evenly pressed against the part 17.

  Next, a modified example of this embodiment will be described.

  FIG. 6 is an enlarged cross-sectional view of a main part of a cooler box according to a modification of the present embodiment.

  The cooler box 40 according to this modification differs from the cooler box 10 according to the embodiment described above. In the cooler box 10, a groove 27 is provided in the lid member 12, and the gap filler 30 and the packing 18 are provided in the groove 27. In contrast, in the cooler box 40 according to this modification, the groove 27 is provided on the main body 11 side, and the gap filler 30 and the packing 18 are fitted in the groove 27. The other configuration of the cooler box 40 is the same as that of the cooler box 10.

  As shown in the figure, also in the cooler box 40, an opening 16 is provided on the upper surface 15 of the main body 11. A cold insulation chamber 14 is formed continuously with the opening 16. The groove 27 is provided in the peripheral edge portion 17 of the opening 16. The groove 27 is formed by being cut downward so as to open in the upper surface 15, and is formed in an annular shape along the peripheral edge portion 17. A gap filler 30 is fitted into the inner part of the groove 27, and the packing 18 is disposed on the gap filler 30. The packing 18 protrudes from the upper surface 15 by several millimeters as shown in the figure, and the packing member 18 contacts the inner surface 42 of the lid member 12 by closing the lid member 12.

  Also in this modified example, since the gap filling material 30 is provided, when the lid member 12 is closed, at a portion where the distance S1 between the bottom surface 29 of the groove 27 and the inner surface 42 of the lid member 12 is small. The gap filling material 30 instantaneously becomes a relatively high pressure, and the gap filling member 30 instantaneously becomes a relatively low pressure at a portion where the distance S1 is large. That is, a part where the internal pressure is locally increased and a part where the internal pressure is locally reduced are generated inside the gap filling member 30.

  When the internal pressure of the gap filler 30 changes, as described above, the gap filler 30 is deformed so that the internal pressure becomes equal. That is, the gap filler 30 flows from a portion where the internal pressure is high to a low portion, and the gap filler 30 flows in the gap between the packing 18 and the bottom surface 29 of the groove 27 regardless of the size of the distance S1. Fill. As a result, even if the distance S1 is not constant, the distance S2 between the packing 18 and the inner surface 42 of the lid member 12 becomes constant due to the deformation of the gap filler 30, and therefore the packing 18 42 is surely and uniformly pressed. As a result, the main body 11 is reliably sealed by the lid member 12, and the distance S <b> 2 is constant, so that the operation of opening and closing the lid member 12 is facilitated.

  Next, another modification of the present embodiment will be described.

  FIG. 7 is an enlarged cross-sectional view of a packing according to another modification of the present embodiment.

  The difference between the packing 45 according to the present modification and the packing 18 according to the embodiment is that the packing 45 has a hollow structure and the core 32 is sealed inside. The material constituting the packing 45 is made of an elastic body such as foamed silicone rubber or ethylene propylene diene terpolymer (EPDM). As the material constituting the core 32, gel-like polyurethane can be adopted as described above. But the material which comprises the core 32 is not limited to this, Grease, oil, water, the substance which has fluidity | liquidity, slime, and other viscous substances may be employ | adopted. In short, the core 32 may be an incompressible gel, liquid or slime having a certain fluidity and viscosity.

  As shown in FIG. 7, the packing 45 includes a pair of side wall portions 46, 47, a thick bottom portion 48, and a top plate portion 49, and the core 32 is accommodated in a space 50 defined by these. Yes. The side wall portions 46 and 47 are thinner than the other portions. Since the core has fluidity as described above, it can be injected into the packing 45 by a syringe or the like. Specifically, the needle of the syringe is inserted into the thick bottom portion 48 and the core 32 is injected into the space 50. At this time, it is preferable to discharge the air existing in advance in the space 50 by, for example, another syringe. The packing 45 is fitted into the main body 11 or the lid member 12 as in the above-described embodiments and modifications. At this time, the thick bottom portion 48 is inserted into the groove 27 provided in the main body 11 or the lid member 12.

  In this modification, since the core 32 is accommodated in the packing 45, in assembling the cooler boxes 10 and 40, only a single member (that is, the packing 45) needs to be incorporated into the main body 11 or the lid member 12. Assembly work is facilitated. Moreover, since the bag 33 that accommodates the core 32 is not necessary, the number of parts is also reduced. Further, since the side wall portions 46 and 47 of the packing 45 are formed thinner than the thick bottom portion 48 and the top plate portion 49, the packing 45 is easily bent and the core 32 can quickly flow in the space 50. .

  The present invention can be applied to a cooler box used for leisure such as fishing.

FIG. 1 is an external perspective view of a cooler box according to an embodiment of the present invention. FIG. 2 is an enlarged perspective view of a main part of the cooler box according to the embodiment of the present invention. 3 is a cross-sectional view taken along the line III-III in FIG. FIG. 4 is an enlarged cross-sectional view of a main part of the cooler box according to the embodiment of the present invention. FIG. 5 is a V-arrow view in FIG. FIG. 6 is an enlarged cross-sectional view of a main part of a cooler box according to a modification of the embodiment of the present invention. FIG. 7 is an enlarged cross-sectional view of a packing according to another modification of the embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Cooler box 11 ... Main body 12 ... Lid member 14 ... Cold storage chamber 15 ... Upper surface of main body 16 ... Opening of main body 17 ... Peripheral part 18 ... Packing 19. ..Wall 24 ... Inner lid 27 ... Groove 28 ... Inner surface of inner lid
29 ... Bottom surface 30 ... Gap filling material 31 ... Groove opening 32 ... Core 33 ... Bag 40 ... Cooler box 42 ... Inner surface

Claims (4)

A cooler box main body having an upper surface provided with an opening, and a cold insulation chamber continuous with the opening;
A lid member provided on the cooler box body for opening and closing the opening;
An elastically deformable packing that is interposed between the opening peripheral portion of the upper surface of the cooler box body and the lid member, and seals the cold-reserving chamber in a state where the lid member closes the opening;
Interposed between the packing and the cooler box body or between the packing and the lid member to offset the deviation of the distance between the upper surface of the cooler box body and the lid member that occurs when the lid member closes the opening; A cooler box equipped with an internal pressure equalizing body that can be deformed so that the internal pressure is uniform. The lid member is provided with a circumferential groove formed in an annular shape that opens to the opening peripheral edge side at a portion facing the opening peripheral edge of the cooler box body in a state where the opening is closed,
The packing is disposed in the circumferential groove in a state of projecting from the opening of the circumferential groove, and is slidably fitted in the circumferential groove so as to advance and retreat in the depth direction of the circumferential groove.
The cooler box according to claim 1, wherein the internal pressure equalizing body is interposed between a bottom surface of the circumferential groove and the packing. The internal pressure equal body is
A liquid or gel core,
The cooler box according to claim 1 or 2, further comprising: a flexible tube-like bag that accommodates the core and is disposed along a longitudinal direction of the circumferential groove. The cooler box according to any one of claims 1 to 3, wherein the packing is a solid member.

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