JP2011250954A - Thermal insulation cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thermal insulation cooker including a thermal insulation outer container, an inner container, and a thermal insulation outer container lid, which reduces impact when the thermal insulation outer container lid is closed.SOLUTION: The thermal insulation cooker includes the thermal insulation outer container 2, the inner container 3, an inner container lid 4, and the thermal insulation outer container lid 5. The thermal insulation outer container lid 5 is formed of a lid body portion 11 and an elastic body 12 provided on the outer periphery of the lid body portion, and the elastic body 12 abuts on an upper end 8 of an opening portion 1. The elastic body 12 has a cross-section of a recess shape having a hollow portion 28, such as substantially C-shape. A projection piece 33 integrally provided with the elastic body 12 is provided to abut on the inner container 3 of the thermal insulation outer container 2. Impact noise is eliminated when closing the thermal insulation outer container lid 5. A front end 33A of the projection piece 33 is brought into contact with the inner container 3 of the thermal insulation outer container 2, an air convection space is reduced around the inner container 3.

Description

  The present invention relates to an insulated cooking container in which an inner container is accommodated in an insulated outer container and an opening of the insulated outer container can be opened and closed by a thermally insulated outer container lid.

  Conventionally, the heat insulation cooking container shown in FIG. 5 is known as this kind of thing. This insulated cooking container includes an insulated outer container 41, an inner container 42 accommodated in the insulated outer container 41, an inner container lid 43 that can be attached to and detached from the inner container 42, and an opening 44 of the insulated outer container 41. And a heat insulating outer container lid 45, and a heat insulating outer container lid 47 that closes the opening 44 is rotatably connected via a hinge 46 provided on the upper side of the heat insulating outer container 41. Further, on both sides of the heat insulating outer container lid 45, notches 49 are formed to which the attachment arms 48 of the handle 47 communicate so that the handles 47 provided on the left and right sides of the inner container 42 appear outside when the lid is closed.

  Unlike the prior art, it is also known that the opening of the heat insulating outer container is detachably closed by a heat insulating outer container lid made of a hard material such as resin without using a hinge.

JP-A-2005-192697

  When the heat insulation outer container lid 45 is connected to the heat insulation outer container 41 by the hinge 46 as in the former prior art, a loud noise may be generated when the impact when the heat insulation outer container lid 45 is closed is greatly closed. was there. In addition, in order to prevent noise when closing the insulated outer container lid 45, if a shock absorbing structure with a metal spring is added to the hinge 46, the cost of the product will increase due to an increase in the number of parts. was there.

  Further, in the case where the heat insulation outer container lid is connected to the heat insulation outer container by a hinge as in the latter prior art, it is necessary to secure a gap when the heat insulation outer container lid rotates. It was necessary to form a large gap between the outer container and the heat insulating outer container. In addition, even with the lid structure as in the latter prior art, a gap must be provided in the circumferential direction to some extent between the resin lid and the heat insulating outer container, resulting in heat loss from that portion.

  The problem to be solved is that in an insulated cooking container having an insulated outer container, an inner container, and an insulated outer container lid, the impact when the insulated outer container lid is closed is absorbed without using a metal spring. is there.

  The invention of claim 1 comprises a heat insulating outer container having an opening at the top, an inner container accommodated in the heat insulating outer container, and a heat insulating outer container lid for opening and closing the opening of the heat insulating outer container, The heat insulating outer container lid is formed of a lid main body portion and an elastic body provided on the outer periphery of the lid main body portion, and the elastic body is in contact with an end side of the opening portion. .

  The invention according to claim 2 is characterized in that the elastic body is provided almost all around the outer periphery of the lid body, and the outer diameter of the lid body is smaller than the end of the opening. It is a heat insulation cooking container of description.

  Invention of Claim 3 forms a hollow part in the site | part facing the edge of the said opening part in the said elastic body, The heat insulation cooking container of Claim 1 or 2 characterized by the above-mentioned.

  The invention according to claim 4 is characterized in that a projecting piece is provided on the outer periphery of the lower part of the elastic body integrally with the elastic body, and the projecting piece is provided so as to be able to contact the inner wall of the heat insulating outer container. It is an insulated cooking container of any one of -3.

  According to the first aspect of the present invention, the elastic body can be brought into contact with the end side of the opening to eliminate an impact sound when the heat insulating outer container lid is closed.

  According to the invention of claim 2, the lid body portion can close the opening portion via the elastic body because the outer diameter of the lid body portion is smaller than the end of the opening portion.

  According to invention of Claim 3, the elasticity of an elastic body can be improved further by forming a hollow part.

  According to invention of Claim 4, by providing a protrusion, the convection space of the air around an inner container can be made small, and heat retention performance can be improved.

It is a whole longitudinal cross-sectional view which shows Example 1 of this invention. It is a longitudinal cross-sectional view of the principal part. It is a perspective view of the heat insulation outer container lid. It is a whole longitudinal cross-sectional view which shows Example 2 of this invention. It is a disassembled perspective view of a prior art.

  Preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention.

  1-3 show Example 1, and the heat insulation cooking container is accommodated in the heat insulation outer container 2 and the heat insulation outer container 2 which are the heat insulation containers which have the opening part 1 in the upper part, as shown in FIGS. An inner container 3 that is a cooking pot, a glass inner container lid 4 that can be attached to and detached from the inner container 3, and a heat insulating outer container lid 5 that opens and closes the opening 1 of the heat insulating outer container 2. .

  The heat insulating outer container 2 is connected to the inner container part 6 which is an inner wall made of metal, for example, stainless steel, and the upper end 8 of the outer container part 7 which is made of the same metal as the inner container part 6 and is bent outward in a flange shape. A portion 9 is formed, and a vacuum heat insulating layer 10 is provided between the inner vessel portion 6 and the outer vessel portion 7 to form a metal vacuum double vessel.

  The heat insulating outer container lid 5 is made of an elastomer having rubber-like elasticity at room temperature provided on the outer periphery of the lid main body 11 and formed by an elastic body 12 called packing or seal, and the inner container lid 4, when the inner container part 6 in the closed state is accommodated in the heat insulating outer container 2 and the center in the vertical direction when the inner container part 6 is closed by the heat insulating outer container cover 5 is the central axis 13, An outer knob 14 is provided on the central axis 13, and the elastic body 12 is provided on the outer periphery of the lid main body 11 with an annular plane around the central axis 13. The lid body 11 is provided with an upper surface member 15 that forms the outer surface of the heat insulating outer container lid 5 on the upper surface side, and a lower surface member 16 that is inserted into the opening 1 on the lower surface side of the heat insulating outer container lid 5. The upper surface member 15 and the lower surface member 16 are formed of a resin such as polypropylene or a metal such as stainless steel, and a heat insulating material 17 such as polystyrene foam is provided between the upper surface member 15 and the lower surface member 16. Further, a recess 18 having an upper opening is formed on the outer periphery of the upper surface member 15, and an intermediate peripheral surface 19 disposed on the outer periphery of the lower surface member 16 on the side of the central axis 13 slightly from the recess 18, the intermediate peripheral surface 19 A lower peripheral surface 21 is provided at a lower portion of the center portion 13 via the stepped portion 20 and slightly further on the central axis 13 side. An inner knob 22 is provided on the central axis 13 on the upper surface of the inner container lid 4.

  The elastic body 12 has a ring portion 23 that is detachably fitted and fixed to substantially the entire outer periphery of the recess 18 and is placed on the upper surface of the bent portion 9, and this ring portion 23 has a central axis. The first upper surface plate portion 24 having a ring-shaped plane centered at 13 and substantially flush with the upper surface member 15, and the concave portion disposed on the central axis 13 side below the first upper surface plate portion 24 18 A first inner surface plate portion 25 disposed on the outer periphery, a first outer surface plate portion 26 disposed on the opposite side of the central axis 13 side below the first upper surface plate portion 24, and the first outer plate portion The first lower surface plate portion 27 is substantially rectangular in cross-section and includes a first lower surface plate portion 27 projecting from the lower end of the face plate portion 26 toward the lower end of the first inner surface plate portion 25. One upper surface plate portion 24 protrudes to an intermediate portion. In the embodiment, it is approximately half of the first upper surface plate portion 24, and the front end portion 27A of the first lower surface plate portion 27 has a gap L. By facing the first inner surface plate portion 25, the first lower surface plate portion 27 is provided in a cantilevered manner, and this first lower surface plate portion 27 is mounted on the bent portion 9 at the time of closing. Therefore, the first upper surface plate portion 24, the first outer surface plate portion 26, the first inner surface plate portion 25, and the first lower surface plate portion 27 are surrounded by the gap L. The inside and outside of the hollow portion 28 communicate with each other. The second outer diameter B from the central axis 13 to the outer edge of the lid body 11, in the embodiment, the outer edge of the recess 18 is smaller than the first outer diameter A from the central axis 13 to the upper end 8 (A> B). Further, the first outer diameter A and the third outer diameter C from the central axis 13 to the tip 27A are substantially equal (A≈C) (in the case of the embodiment, they are coincident), and from the central axis 13 The fourth outer diameter D to the outer peripheral portion of the bent portion 9 and the fifth outer diameter E from the central axis 13 to the inner side of the first outer surface plate portion 26 are substantially equal (D≈E) (in the case of the embodiment) The hollow portion 28 is opposed to the bent portion 9 by being formed.

  The ring part 23 is attached to the lid main body part 11 in such a manner that a substantially inverted U-shaped part 29 having an opening on the center axis line 13 side is integrally provided on the center axis line 13 side of the first inner surface plate part 25, and A downward convex portion 31 formed at the tip of the second upper surface plate portion 30 of the substantially inverted U-shaped portion 29 arranged substantially flush with the upper surface plate portion 24 is inserted into the recessed portion 18, and the substantially inverted U-shaped portion The second lower surface plate portion 32 of 29 is in contact with the lower portion of the concave portion 18 and the substantially inverted U-shaped portion 29 is fitted into the concave portion 18, so that the ring portion 23 is fixed to the upper surface member 15 and eventually the lid main body portion 11. ing.

Further, a cantilever plate-like projecting piece 33 is provided on the outer periphery of the lower portion of the elastic body 12 in the lateral direction as a tongue-shaped longitudinal section toward the side opposite to the central axis 13. Then, when the lid is closed, the tip 33A of the projecting piece 33 is located slightly below the bent portion 9 in the inner container portion 6 that becomes the inner wall of the heat insulating outer container 2, which corresponds to the upper end 10A of the vacuum heat insulating layer 10 in the embodiment. It is provided so as to be able to come into contact with the taper portion 6A of the inner container portion 6 that expands. The projecting piece 33 is attached by connecting a second inner surface plate portion 34 fitted along the intermediate peripheral surface 19 to the lower portion of the second lower surface plate portion 32, and at the lower portion of the second inner surface plate portion 34. The base end of the projecting piece 33 is continuously provided, and a short projecting piece 35 is provided at the base end toward the central axis 13 side, and the upper surface of the short projecting piece 35 is engaged with the step portion 20. ing.
Then, when the center axis 13 is the center, the sixth outer diameter F to the tip 33A of the projecting piece 33 is larger than the minimum outer diameter G to the taper 6A and shorter than the maximum outer diameter H.

  As shown in FIG. 3, the inner container 3 is provided with a pair of left and right inner container handles (not shown) via a bifurcated mounting arm 36, and the inner container handles are separated by a heat insulating outer container lid 5. Even when the lid is closed, it protrudes outward from the heat insulating outer container lid 5, and for this reason, the first cutout for passing the mounting arm 36 through the left and right portions of the ring portion 23 and the projecting piece 33 is provided. Part 37 and a second notch part 38 are formed, and the first notch part 37 provided in the ring part 23 is arranged in a pair of left and right, and in the middle of the first notch part 37 A solid ring portion 23A is arranged instead of being hollow.

  Next, operation | movement at the time of using the heat insulation cooking container by embodiment of this invention is demonstrated. After the cooking material is once heated with a suitable amount of water or the like, or the cooking material and water are separately heated, the inner container 3 is filled with these, the inner knob 22 is picked, the inner container lid 4 is closed, and the handle The inner container 3 is accommodated in the heat insulating outer container 2. The inner container 3 is held at a slight distance from the inner container part 6 of the heat insulating outer container 2.

  Next, when the outer knob 14 is picked and the opening 1 is closed by the heat insulating outer container lid 5, the elastic body 12 has a hollow cross-sectional shape such as a substantially U-shape, and the cross-sectional shape portion of the heat insulating outer container 2 is Since the heat insulating outer container lid 5 is held by coming into contact with the upper end 8 of the opening 1, it is possible to soften the touch when the lid is closed by the elastic force of the elastic body 12. When the lid is closed, the attachment arm 36 passes through the first cutout portion 37 and the second cutout portion 38 so that the handle appears on the outside of the heat insulation outer container lid 5, and the cooking material is insulated for the required time. It becomes a state and can be cooked.

  At this time, since the lid main body portion 11 has entered the inside of the heat insulating outer container 2, the protruding piece 33 integrated with the elastic body 12 attached to the outer periphery thereof contacts the tapered portion 6A of the heat insulating outer container 2, As a result, the space in which the air convects is almost hermetically enclosed by the projecting piece 33, the inner container 6 serving as the inner wall, and the inner container 3, and prevents a decrease in heat retention performance due to convection around the inner container 3. can do. And the inner container 3 can be taken out by opening the heat insulating outer container lid 5.

  As mentioned above, in the said Example, only the heat insulation outer container cover 5 is mounted in the upper end 8 of the opening part 1 of the heat insulation outer container 2, and the impact sound when the heat insulation outer container cover 5 is closed is eliminated. Can do. Furthermore, since the contact surface between the heat insulating outer container 2 and the heat insulating outer container lid 5 is the elastic body 12, the first lower surface plate portion 27, which is a contact portion, is used at the upper end 8 by utilizing the weight of the lid main body portion 11. Since it can be brought into close contact with a certain bent portion 9, heat loss from the gap between the first lower surface plate portion 27 and the bent portion 9 can be reduced, and rattling of the heat insulating outer container lid 5 can be suppressed.

  Furthermore, by making at least a part of the cross-sectional shape of the elastic body 12 at the contact portion between the heat insulating outer container 2 and the heat insulating outer container lid 5 into a hollow shape having a hollow portion 28 such as a substantially U-shape, the heat insulating outer container lid The feel when playing 5 can be further softened.

  Further, the air around the inner container 3 is brought into contact with the inner container 3 of the heat insulating outer container 2 by bringing the tip 33A of the tongue-shaped protrusion 33 provided at the lower part of the elastic body 12 provided in the heat insulating outer container lid 5 into contact with the inner container 3 of the heat insulating outer container 2. The convection space can be reduced, and the vertical gaps can be reduced by the protrusions 33, so that heat loss can be reduced.

  FIG. 4 shows a second embodiment. The same parts as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. In the second embodiment, the first lower surface plate portion 27 ′ of the elastic body 12 is formed not only at the bent portion 9 but also at the front end portion 27 ′ A so as to extend inward, and the thickness of the projecting piece 33 is further increased. I is formed so that the tip side is thinner than the base end side.

  In this way, by making the first lower surface plate portion 27 'wider, even if the heat insulating outer container lid 5 is somewhat biased and closed, the elastic body 12 is securely placed on the bent portion 9, The projecting piece 33 can also reliably contact the inner wall.

  As described above, the heat insulating cooking container according to the present invention can be applied to various uses.

DESCRIPTION OF SYMBOLS 1 Opening part 2 Heat insulation outer container 3 Inner container 5 Heat insulation outer container lid 6 Inner container part (inner wall)
8 Upper end (end)
11 Lid body
12 Elastic body
28 Hollow part
33 Projection piece A B Outer diameter

Claims (4)

  A heat insulating outer container having an opening at the top, an inner container accommodated in the heat insulating outer container, and a heat insulating outer container lid for opening and closing the opening of the heat insulating outer container, the heat insulating outer container lid being a lid body And an elastic body provided on the outer periphery of the lid main body, and the elastic body abuts against an end of the opening.   The heat insulating cooking container according to claim 1, wherein the elastic body is provided on substantially the entire outer periphery of the lid main body, and the outer diameter of the lid main body is smaller than the end of the opening.   The heat insulation cooking container according to claim 1, wherein a hollow portion is formed in a portion of the elastic body facing the end of the opening.   The protrusion is provided on the outer periphery of the lower part of the elastic body integrally with the elastic body, and the protrusion is provided so as to be able to contact the inner wall of the heat insulating outer container. Insulated cooking container as described in 2.

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