JP3494944B2 - Electric pot lid - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric pot lid, and more particularly to a heat insulating structure for the lid.

[0002]

2. Description of the Related Art A lid of an electric pot generally has a plastic lid upper member and a lid lower member which are vertically combined to form a basic structure. In order to reinforce the lid, a large number of reinforcing ribs are provided on the lower lid member. The upper end of the reinforcing rib is brought close to or in contact with the inner surface of the lid upper member.

In order to improve the heat insulating effect without increasing the thickness of the lid as described above, there is a reflective material such as aluminum foil between the upper ends of the reinforcing ribs of the lower lid member and the inner surface of the upper lid member. It has been conventionally practiced to interpose a metal foil. This metal foil reflects the heat transmitted from the pot body side to the upper lid member through the lower lid member, and prevents the heat from being dissipated from the upper surface of the lid.

[0004]

However, according to the above configuration, high-temperature heat is accumulated in the wide space between the under-lid member and the metal foil, and the metal foil heated by this heat and the metal foil are heated. There is a problem that heat is dissipated to the outside through the contacting upper lid member, and a sufficient heat insulating effect cannot be obtained.

Therefore, an object of the present invention is to improve the heat insulating structure to enhance the heat insulating effect of the lid of the electric pot.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to an electrical system in which a lower lid member and an upper lid member are vertically combined and a heat insulating material is interposed between the upper and lower members. In the pot lid, a space is provided between the heat insulating material and the lid upper member.

According to the above construction, the space above the heat insulating material performs a heat insulating action, so that the heat insulating effect is improved as compared with the structure in which the heat insulating material is brought into contact with the upper lid member.

A large number of reinforcing ribs having a constant height may be provided on the under-cover member, and the heat insulating material may be placed on the placing surface formed by the upper ends of the reinforcing ribs. Since the reinforcing ribs also serve to support the heat insulating material from below, no special structure for supporting the heat insulating material is required.

The lower lid member may be provided with a projection higher than the mounting surface, and the projection may be penetrated through a hole provided in the heat insulating material. According to this structure, the heat insulating material can be prevented from shifting.

Further, it is possible to adopt a structure in which the upper end of the protrusion is brought close to or in contact with the inner surface of the upper lid member. According to this configuration, the load acting on the lid upper member can be supported by the protrusions, and the deformation of the lid upper member can be prevented.

The heat insulating material may be a metal foil. According to this structure, it is possible to perform the heat insulating action without affecting the thickness of the lid. As the metal foil, those having high reflectivity and radiation such as aluminum foil and copper foil are desirable.

It is possible to adopt a structure in which a pressing sheet is superposed on the upper surface of the metal foil, and a space is provided between the pressing sheet and the lid upper member. According to this structure, the pressing member prevents the metal foil from moving in the vertical direction. It is desirable that the pressing sheet has a size that covers the metal foil and has a required rigidity. Moreover, if this is formed of a heat insulating material, the heat insulating effect can be further enhanced.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1 and 2,
The lid of the electric pot of the embodiment has a basic configuration in which the plastic lower lid member 1 and the plastic upper lid member 2 are fitted and integrated, and the vapor passage 4 is formed on the lower surface of the lower lid member 1. An inner lid 3 made of stainless steel is overlaid on the inner lid 3, and the inner lid 3 is integrated with the lower lid member 1 by screws 5 screwed from below.

A hook 6 is provided on the front upper surface of the lower lid member 1 described above.
Is provided slidably in the front-rear direction, and is biased by a coil spring 7 interposed between the rear end portion and a part of the under-cover member 1 so that the front end portion is exposed forward. A safety valve chamber 8 is provided at the rear end of the under-cover member 1, and two valve seats 9 are provided at the bottom of the safety valve chamber 8.

A cylindrical guide member 11 is provided in the safety valve chamber 8 described above.
Is stored. The inside of the guide member 11 is divided into two chambers corresponding to the two valve seats 9 and 9, and large and small valve holes 12 and 12 'are provided at the upper end thereof. In a normal state, the balls 13, 13 are placed on the respective valve seats 9, 9 and the steam entering from the steam passage 4 is provided in the opening 1 provided in the peripheral wall of the safety valve chamber 8.
4 and the slit 15 of the guide member 8, and each valve hole 1
Emitted from 2, 12 '. When the pot falls, the balls 13 and 13 block the valve holes 12 and 12 'to prevent the hot water from leaking out. The difference in size between the valve holes 12 and 12 'is that
Due to the sudden closure of the lid, the balls 13 and 13 are closed by the valve hole 12,
This is to ensure that the small-diameter side ball 13 is dropped first and the exhaust passage is secured when 12 'is blocked.

A hinge portion 20 is provided behind the safety valve chamber 8 described above.

A plurality of steam holes 16 are provided in the central portion of the inner lid 3, and the boss 1 protruding from the lower surface of the lower lid member 1 is formed.
A steam valve 17, which is fitted in 8 so as to be vertically movable, closes the steam hole 16. The steam generated inside the pot pushes the steam valve 17 open and flows into the steam passage 4.

On the upper surface of the lower lid member 1, a large number of reinforcing ribs 19 having the same height are provided orthogonally to each other in a lattice pattern except for the hook 6 and the safety valve chamber 8 and the like. A flat mounting surface 2 having a constant height due to the upper surface of the reinforcing rib 19.
1 is formed. Further, a plurality of projections 22 integrated with the reinforcing rib 19 are provided so as to project higher than the mounting surface 21 by a height h. As shown in FIG. 1, each protrusion 22 has an upper lid member 2
To approach or abut the lower surface of the upper cover 2 and support the load acting on the upper surface of the upper lid member 2.

An aluminum foil 23 as a heat insulating material is placed on the placing surface 21. As shown in FIG. 2, the aluminum foil 23 has arc portions 24 along the arcs on both sides of the under-cover member 1, and a front edge recess 25 that surrounds the hook 6 portion at the front edge is formed. Safety valve chamber 8 at the edge
And a trailing edge recess 26 surrounding the hinge portion 20 is formed. In addition, the aluminum foil 23 is provided with holes 27 through which the above-mentioned protrusions 22 penetrate so as to correspond to the respective protrusions 22. Metal foil such as copper foil may be used instead of the aluminum foil 23.

On the upper surface of the aluminum foil 23, a pressing sheet 2 made of foamed resin having a required thickness and a required rigidity is provided.
8 are stacked. The outer shape of the pressing sheet 28 is substantially the same as that of the aluminum foil 23 described above, and is provided with arcuate portions 31, leading edge recesses 32, trailing edge recesses 33, and holes 34 for penetrating the projections 22. The pressing sheet 28 is provided to press the aluminum foil 23 and stabilize it, but it may be omitted.

The aluminum foil 23 and the pressing sheet 28 described above
The upper lid member 2 is put on the lower lid member 1 by sandwiching the lower lid member 1, and the engaging claws 35 provided on the inner surfaces of both sides of the upper lid member 2 are engaged with the engaging recesses 36 of the lower lid member 1. And lid member 2
Are fitted and integrated. As described above, since the protrusion 22 of the lower lid member 1 approaches or contacts the inner surface of the upper lid member 2, the height h ′ obtained by subtracting the thickness h from the height h is set on the upper surface of the pressing sheet 28. A space 37 having the size of the mounting surface 21 is secured. When the pressing sheet 28 is omitted, a space 37 having the same width as the above and substantially having a height h is secured on the upper surface of the aluminum foil 23.

A hook lever 38 is provided on the front portion of the upper surface of the upper lid member 2. Since the locking piece 39 of the hook lever 38 is locked to the hook 6, the hook 6 can be retracted by operating the hook lever 38 to disengage the hook 6 from the pot body.
Further, a steam discharge hole 40 is provided at the rear of the upper lid member 2,
The vapor discharge hole 40 communicates with the upper end of the safety valve chamber 8 described above. Further, a hinge cover portion 41 is provided behind the vapor discharge hole 40, and is fitted to the hinge portion 20 of the under-cover member 1.

Since the lid of the electric pot of the embodiment is as described above, when used by being attached to the pot body, the heat that enters the inside of the lid from the pot body side is reflected by the aluminum foil 23, The heat that has accumulated in the space below this and that escapes to the upper space 37 is blocked by the heat insulating action of the pressing sheet 28. The heat passing through the pressing sheet 28 or the heat radiated upward from the aluminum foil 23 when the pressing sheet 28 is omitted is subjected to the heat insulating action of the space 37. Therefore, the heat radiated from the lid upper member 2 to the outside is reduced.

Even if the heat insulating sheet similar to the pressing sheet 28 is placed on the placing surface 21 in place of the aluminum foil 23 and the pressing sheet 28, substantially the same effect can be obtained. To be

[0025]

As described above, according to the present invention, the heat insulating material is provided on the inner surface of the lid upper member by a simple structure in which a required space is provided above the heat insulating material such as aluminum foil interposed inside the lid. The heat insulating effect is improved as compared with the case of approaching or contacting, and the energy saving effect can be enhanced with an inexpensive structure.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment.

FIG. 2 is an exploded perspective view of the above.

[Explanation of symbols]

1 Under-cover member 2 Top member 3 Inner lid 4 steam passage 5 screws 6 hooks 7 coil spring 8 Safety valve room 9 seat 11 Guide member 12, 12 'valve hole 13 balls 14 openings 15 slits 16 steam holes 17 Steam valve 18 Boss 19 Reinforcing rib 20 Hinge part 21 Placement surface 22 protrusion 23 Aluminum foil 24 Arc 25 Front edge recess 26 Rear edge recess 27 holes 28 Pressing sheet 31 arc part 32 Front edge recess 33 Rear edge recess 34 holes 35 locking claw 36 Engagement recess 37 space 38 Hook lever 39 Locking piece 40 Steam discharge hole 41 Hinge cover part

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-10-127494 (JP, A) JP-A-11-56608 (JP, A) JP-A-11-128079 (JP, A) JP-A-11- 18947 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A47J 27/00-27/13 A47J 27/20-29/06

Claims (4)

(57) [Claims] 1. A lid of an electric pot comprising a lower lid member and an upper lid member combined vertically, and a heat insulating material interposed between the upper and lower members, wherein the heat insulating material is a metal foil.
Put a pressing sheet on the top surface of the metal foil and press the pressing sheet.
Doo and lid of an electric kettle, characterized in that a space between the cover upper member. 2. The lower lid member is provided with a number of reinforcing ribs having a constant height, and the metal foil is mounted on a mounting surface formed by the upper ends of the reinforcing ribs. Item 1. The lid of the electric pot according to item 1. Wherein the higher projection than the mounting surface to cover lower member provided, according to claim 1 or 2 the projections, characterized in that is penetrated into a hole provided in the metal foil and pressing the sheet The lid of the electric pot described in. 4. The lid of an electric kettle according to claim 3, characterized in that the upper end of the projections was brought into contact with the inner surface of the lid upper member.