JP3234789B2 - Cooking pot lid device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid device for a cooking pot, and more particularly, to a lid device for attaching a so-called double lid to a cooking pot, comprising an inner lid and an outer lid.

[0002]

2. Description of the Related Art As a lid device used for a cooking pot of this kind, a structure as shown in FIG. 10 is adopted in a rice cooker of a type in which a cooking pot (3) is supported by an outer body (1). I have.
This lid device has a flange (3
The upper end of the cooking pot (3) provided with (1) is closed, and is composed of an inner lid (6) and an outer lid (7), which are interconnected by a shaft at the center. . Therefore, in this lid device, the own weight of the outer lid (7) and the load applied thereto act on the inner lid (6) at the connecting portion, and the peripheral edge of the inner lid (6) is moved by the acting force to the collar ( Pressure is applied so as to adhere to 31).

[0003] The inner lid (6) is provided with a weight (8) which is fitted to the shaft so as to be able to move up and down, and a central portion of the inner lid (6) is provided in an area below the weight (8). Multiple through holes (69) (6
9), and the outer lid (7) has a through hole (7
5) (75) is formed. One of the outer lids (7) in the lid device of the conventional rice cooker is supported in a half-open state by a connecting fulcrum (not shown) with the outer body (1), and the opposite side of the connecting fulcrum is It has a configuration (not shown) that is locked to the body in a detachable manner. Therefore, when the outer lid (7) is closed in the locked state, a downward load is applied to the outer lid (7), and as a result of this acting force, the periphery of the inner lid (6) causes the flange of the collar (31). ).

[0004] In the lid device having the above structure, when a tongue is generated in the cooking pot (3), the tongue becomes bubbles as the internal pressure rises. Since the air bubbles are in close contact with (31), the air bubbles push up the weight (8) from the through holes (69) (69) at the center of the inner lid (6) to push up the inner lid.
Exit to the top of (6). At this time, when the air bubbles reach the upper surface of the inner lid (6), the air bubbles are broken and a part of the nebula is stored on the upper surface of the inner lid (6), but the vapor passes through the through holes (75) ( 75). Therefore, even if the bed is discharged above the inner lid (6), only steam is discharged to the outside of the outer lid (7) without being blown out from the periphery of the inner lid (6). Becomes

[0005]

However, in this conventional apparatus, the center connecting portion of the inner lid (6) is pushed downward by a load when the outer lid (7) is held in a locked state, and the inner lid is pushed downward. Since the peripheral edge of (6) is brought into close contact with the collar portion (31), a device for supporting the outer lid (7) and the above-described locking device are required, and the lid device is complicated and exaggerated.

[0006] The present invention has been made in view of the above-mentioned point, and has been made in consideration of the following problem. "A middle lid for closing a top opening of a cooking pot (3) having a flange (31) projecting outward from a top opening.
(6) and an outer lid (7) covering the inner lid (6), wherein the central parts of the inner lid (6) and the outer lid (7) are connected to each other by connecting means. The load on the outer lid (7) is directly
(6) so as to eliminate the need for supporting means such as the locking device, in other words, the airtightness between the inner lid (6) and the collar portion (31) without using the supporting means. The task is to ensure that

[0007]

Means for Solving the Problems The technical means of the present invention taken to solve the above-mentioned problem is that "the peripheral portion of the inner lid (6) which is placed in close contact with the collar portion (31)". Rising section (6
8), and the edge of the other outer lid (7)
(68) is provided with an annular sealing surface which is in close contact with the connecting means, and the connecting means is allowed to expand and contract in a free state over a certain range, and in a state where the rising portion (68) is in close contact with the annular sealing surface, the connecting means is In the free state in which the telescopic unit can be expanded and contracted, the present invention is applicable.

The above solution works as follows. Since the inner lid (6) and the outer lid (7) are connected by the center connecting means, they can be handled as one. Further, since the connecting means can be removed as needed, both can be separated and washed. The lid device for the cooking pot (3)
When placed on the rim, the periphery of the inner lid (6) is in close contact with the collar (31). When the annular sealing surface is in close contact with the rising portion (68), the load of the outer lid (7) acts on the periphery of the inner lid (6) via the rising portion (68). At this time, since the connecting means for connecting the central portions of the inner lid (6) and the outer lid (7) to each other is in a free state and can be expanded and contracted, the load of the outer lid (7) is limited by this connecting means. It hardly acts on the center of the lid (6).

Therefore, the load of the outer lid (7) acts directly on the peripheral edge of the inner lid (6), and the sealing at this portion is ensured. For this purpose, the outer lid (7) is made of iron, etc.
It is desirable to increase the self-weight of (7) to increase the acting force on the inner lid (6).

[0010]

Since the present invention has the above configuration, it has the following specific effects. When the outer lid (7) and the inner lid (6) are set on the cooking pot (3) in a connected state, the load of the outer lid (7) directly acts on the peripheral edge of the inner lid (6), Since a seal between the periphery of the inner lid (6) and the collar (31) is ensured, cooking can be performed without using conventional support means for maintaining the outer lid (7) in a locked state. Can be prevented from leaking from the periphery of the inner lid (6). Therefore, the structure of the lid device can be simplified as compared with the conventional one.

[Modification of the above technical means]
In the above technical means, it is preferable that the rising portion (68) be tapered, and the annular sealing surface bend from the periphery of the outer lid (7) and be tapered to fit tightly into the rising portion (68). Part (73) ”(see claim 2),
Since the rising portion (68) and the skirt portion (73) are easily fitted in a substantially close contact state, it is easy to secure the airtightness of the joining portion between the two.

In the case where the front outer lid (7) is made of iron whose surface is covered with an enamel-treated layer (see claim 3), it is heavier than the outer lid (7) made of aluminum. Accordingly, the acting force for pressing the peripheral edge of the inner lid (6) against the collar portion (31) is increased, and the degree of close contact between the peripheral edge of the inner lid (6) and the collar portion (31) is improved. Further, "the brim (31) of the cooking pot (3)
A peripheral wall (32) that rises upward from the periphery of the
An annular flat portion (74) facing the upper surface of the peripheral wall portion (32) is provided on the outer periphery of the skirt portion (73) of (7).
(73) is lower than the height of the peripheral wall portion (32) ”(see claim 4), the inner lid (6) is not used and the outer lid (7) is not used.
When only the annular flat part (74) is used,
In the case of the outer lid (7) which has been subjected to an enamel treatment, since the lower end of the skirt portion (73) does not come into contact with the collar portion (31) so as to contact the peripheral wall portion (32) of (3). The skirt part
The surface treatment at the lower end of (73) is not easily damaged.

[0013] Further, "the center portions of the inner lid (6) and the outer lid (7) are mutually connected to each other by a cylinder (6) made of an elastic material attached to the inner lid (6).
6) and a connecting shaft (72) attached to the outer lid (7) are connected in a fitted state, and an enlarged head (71) at the distal end of the connecting shaft (72) is (66) so as to removably engage with a rib (67) provided on the inner peripheral wall thereof ”(see claim 5).
Then, the inner lid (6) and the outer lid (7) are detachably connected by a simple configuration.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 shown in FIGS. 1 to 8 will be described. In the first embodiment, as shown in FIG.
Combustion amount for normal stove (400 Kcal / h to 230
This is a cooking pot set adapted to be placed on the gotoku (2) of the crater (hob) provided with a burner (4) set at about 0 Kcal / h, and particularly a cooking pot set suitable for rice cooking. is there. The normal stove includes a plurality of stove portions, and each stove portion has a gotoku (2) supported by a top plate (40), a juice tray, and a burner protruding from the center of the juice tray. (4) is provided.

An outer body (1) accommodating the cooking pot (3)
Has a configuration in which the collar portion (31) projects outward from the upper end open portion, and the thickness of the bottom portion is set to be thicker than the thickness of the trunk portion. This cooking pot (3) is formed in a substantially cylindrical shape having an upper end smaller than a lower end as shown in FIG.
An upper flange (16) including a plurality of support pieces (15) and (15) for supporting the collar portion (31) is formed on an inner peripheral side of an upper end, and a flange portion (11) extends on an inner peripheral side of a lower end. ing. The diameter of the collar (31) is set smaller than the inner diameter of the upper flange (16).

As shown in FIG. 7, the supporting pieces (15) and (15) protrude in trapezoidal shapes from the respective positions where the circumference of the upper end of the cylindrical outer body (1) is divided into four equal parts. It is set in a planar shape, and the tip is an arc-shaped portion (17). This arc-shaped part (1
7) The diameter of the circle connecting (17) is set slightly larger than the diameter of the upper end of the body of the cooking pot (3), and as shown in FIG. When inserted into (1), the body of the cooking pot (3) is positioned by the four arc-shaped portions (17) (17) shown in FIG.
(3) are fitted concentrically and are supported by the support pieces (15) and (15), and an annular exhaust port is formed on the outer periphery of the collar portion (31), which is an outer body ( It communicates with the cylindrical space between 1) and the cooking pot (3).

In the supporting state, the height of the outer body (1) is adjusted so that the bottom of the cooking pot (3) is located slightly above the flange (11) of the outer body (1). The relationship between the height and the height of the brim portion (31) of the cooking pot (3) is determined.
The flange portion (11) projects inward from the lower end of the outer body (1), and an annular frame (12) is connected to the flange portion (11). As shown in FIG. 2, the annular frame (12) is formed in an annular shape so that the width direction of the band plate is upright, and a plurality of engaging recesses (13) (13) that open downward are provided. They are formed at equal intervals. The width of the upper end of the engagement concave portion (13) is set slightly larger than the thickness of the claw (21) of the gode (2) supported by the top plate (40), and the lower end of the engagement concave portion (13) is set. The corner of the opening is arc-shaped. Also, four brackets (18) (18) protrude from the middle of the trunk of the annular frame (12).

The annular frame (12) is connected and fixed to the flange portion (11) using the brackets (18) (18) as shown in FIGS. As a result, the annular frame (12) is
And a flange is formed concentrically with the annular frame (12) and the flange (11). The engaging recesses (13) and (13) correspond to the claws (21) and (2)
It is adapted to the sequence of 1). In this example, Gotoku (2) is
The six pawls (21) (2) are attached to the gorgeous frame (22) placed on the top plate (40).
1) is a configuration attached in an arrangement mode as shown in FIG. 5, wherein the engaging concave portions (13) and (13) are formed at positions where the six claws (21) and (21) are fitted respectively. Have been.

The inner end group of each of the claws (21) and (21) is a burner.
(4) are located circumferentially around the heat-sensitive element (5) passing through the center through space, the length of each claw (21) is set to be constant, and the claw (21) ( 21) Each of the thermosensitive elements
They are arranged radially with (5) as the center and arranged at a constant angular pitch. Therefore, the adjacent nail (21) in this example
The mutual included angle of (21) is 60 degrees. On the other hand, the angle between the adjacent engaging recesses (13) (13) is set to 30 degrees.

When the cooking pot (3) is accommodated in the outer body (1) having the above structure and the outer body (1) is placed on the gorgeous (2), the engaging recess (13) of the annular frame (12) is formed. (13) and the claws (21) and (21) fit into each other, and the outer body (1) and the burner (4) are set concentrically. Then, by the engagement between the engaging concave portion (13) and the claw (21), the two are fixed in the concentric state, and are held in a state where they do not move. An annular frame (12) including the engagement recesses (13) (13)
Function as the positioning means in the present invention. In addition,
Since the outer body (1) and the cooking pot (3) are supported concentrically, both of them are concentric with the burner (4). When the outer body (1) is supported, an annular gap is formed below the flange portion (11), and a draft action by the secondary air and the combustion exhaust gas of the burner (4) is formed through the annular gap. Is introduced into the outer body (1).

Therefore, the supporting piece housed in the outer body (1)
(15) The cooking pot (3) supported by (15) is also
(4) and a thermal element (5) protruding from this center through space
And concentric. Particularly, in the first embodiment, the average diameter of the body of the cooking pot (3) is set to about 165 mm, the average diameter of the outer body (1) is set to 230 mm, and the average interval between them is about 30 to 35 mm. Is set to With this configuration, even when the burner (4) having the above calorific value is burned, the combustion exhaust gas hardly comes into direct contact with the body of the outer body (1). The temperature of the handle attached to the car is from 50 to 57 ° C (1100 Kcal / h) to 85 to
It was kept low at about 97 ° C. (2800 Kcal / h). This is because the fresh air flowing along the lower surface of the flange portion (11) at the time of combustion is drawn up along the inner surface of the outer body (1) by a draft action generated by the combustion exhaust gas, so that the air cooling effect by the fresh air occurs It is considered something.

The cooking pot (3) is provided with a lid device comprising an inner lid (6) and an outer lid (7) covering the inner lid (6).
It is attached to the open end of (3). As shown in FIG. 1, the inner lid (6) is a peripheral flange mounted on the upper surface of the collar (31).
(62), an annular concave portion (63) on the inner peripheral side thereof, an annular raised portion (64) continuing further on the inner peripheral side, and a central concave portion (65) surrounded by the annular raised portion (64). The cylindrical body (66) is fixed to the central concave portion (65) and protrudes upward toward the inner lid (6).

At the center of the lower surface of the outer lid (7), a connecting shaft (72) having an enlarged head (71) at the end is attached.
(72) is removably engaged with a rib (67) formed on the inner periphery of the lower part of the cylindrical body (66), so that the inner lid (6) and the outer lid (7) are connected at the center. . The connection strength between the connection shaft (72) and the cylindrical body (66) is based on the engagement between the rib (67) and the enlarged head (71), and in this example, the cylindrical body (66) ) Is molded from an elastic synthetic resin such as rubber, so that when the connection shaft (72) is forcibly pulled out, the ribs (67) are elastically deformed and the connection is released.

As shown in FIG. 6, a tapered rising portion (68) directed diagonally upward and outward is formed on the periphery of the peripheral flange (62) of the inner lid (6). ), A similar tapered skirt portion (73) fitted to the rising portion (68) is formed, and the inner lid (6) and the outer lid (7) are formed.
In the connection state, the skirt portion (73) fits inside the rising portion (68) in an overlapping manner. The outer lid (7) has an annular flat portion (74) formed outside the skirt portion (73) and a further outer portion formed in a cross-sectional shape curved upward.
In the state where (6) is connected, the upper end of the peripheral wall portion (32) rising from the peripheral edge of the collar portion (31) and the annular flat portion (74),
It is configured to approach with a slight gap.

Therefore, when the lid device is placed on the collar portion (31) of the cooking pot (3), the rising portion (68) and the skirt portion are placed.
(73) and the load on the outer lid (7) is
The peripheral portion of the inner lid (6) is pressed against the collar portion (31). In this state, the inner cover (6) and the outer cover (7) are connected by connecting the connecting shaft (72) and the cylindrical body (66).
And are coupled in a retaining state.

The cylindrical body (66) has a peripheral skirt portion (8
A disk-shaped weight (8) having (1) is externally fitted to be able to move up and down, and the lower end of the peripheral skirt (81) is located at the center recess.
It is in contact with the upper surface of (65). A plurality of through-holes (69) (69) are formed through the center recess (65). During cooking, the internal pressure in the cooking pot (3) depends on the weight of the weight (8). Cooking proceeds in a state where is increased.

When the internal pressure rises to cause a spill, the peripheral flange of the inner lid (6)
Since (62) is pressed against the collar (31) by the weight of the outer lid (7), the spillover pushes up the weight (8), and the outer lid (7) on the upper surface of the inner lid (6). Spills into the space between. Then, a part is returned into the cooking pot (3), but a part is stored in the annular concave portion (63) on the upper surface of the inner lid (6), and the steam is transmitted through a plurality of transparent holes formed in the outer lid (7). It is discharged from the holes (75) (75),
The disadvantage that the internal pressure of the cooking pot (3) rises excessively can be eliminated. In addition, it is possible to prevent spills.

The effect of preventing the spillover is particularly effective when cooking rice using the lid device. As shown in FIG. 1, a thermosensitive element (5) protrudes upward from a through hole in the center of a burner (4) by a spring (51). The heating amount of the burner (4) is controlled by the control device according to the detected temperature of (5).

Accordingly, when rice and water are set in a predetermined ratio and stored in the cooking pot (3), and the burner (4) is set to the combustion state and the rice cooking control state is set in this state, the burner (4) Combustion is performed in a state where the amount of combustion gas is set to a value suitable for rice cooking, and the rice cooking operation proceeds. In this state, rice is generated in the cooking pot (3) according to the progress of the rice cooking process, but the above-mentioned operation can eliminate the inconvenience that the rice is blown out.

Incidentally, exceptionally, in the rice cooker, cooking may be performed with a combustion amount larger than a value suitable for the rice cooking, or cooking similar to this may be performed. Even in this case, the outer copper body (1) and the cooking pot (3)
The outer copper body (1) is less likely to be heated because the distance from the body is large. In the first embodiment, as described above,
Due to the load on the outer lid (7), the periphery of the inner lid (6) is
The inner lid (6) and outer lid
With the (7) superimposed, the enlarged head (71) at the lower end of the connecting shaft (72) is located below the lower edge of the rib (67) on the inner periphery of the cylindrical body (66). It is desirable. This is because the weight of the outer lid (7) does not act on the central connecting portion, but acts on the peripheral edge of the inner lid (6) only through the skirt portion (73). Also, there is no concern that the peripheral edge of the inner lid (6) will rise from the collar (31).

Usually, the inner lid (6) is formed of an aluminum plate, but it is necessary to make the outer lid (7) heavy enough.
The surface is coated by enamelling assuming that the constituent material of (7) is formed of an iron plate. Therefore, it is much heavier than the outer lid (7) made of aluminum. In addition, at the time of ordinary cooking, as shown in FIG. 8, it may be used without using the inner lid (6). In this case, the outer lid
Although the enamel surface of (7) comes into direct contact with the cooking pot (3), in this example, the annular flat portion (7
4) contacts the upper surface of the peripheral wall (32) at the upper end of the cooking pot (3). Therefore, when handling the outer lid (7), the disadvantage that the lower end of the skirt (73) comes into contact with the collar (31) and the enamel surface is damaged can be solved.

In the first embodiment, the flange portion
An annular frame (12) having a plurality of engaging recesses (13) (13) is connected to (11) so that the claws (21) (21) fit into the engaging recesses (13) (13). In addition, the positioning is performed by placing the device on Gotoku (2). Alternatively, a configuration such as that of the second embodiment shown in FIG. 9 can be adopted. In this example, nails (21) (2
Each of the outer edges of (1) is located on a circumference centered on the thermosensitive element (5), and the flange (11) has the claws (21) (2)
An annular step (14) is formed on the outer edge of (1) so as to fit outside. Inside the annular step (14), an inner peripheral edge becomes a curled portion (112) and an annular support is raised one step. In this example, the cross section from the support surface portion (111) to the annular step portion (14) substantially matches the cross-sectional shape of the outer upper portion of the flange portion (11). Therefore, when the outer body (1) having this configuration is placed on the claws (21) and (21), the outer end faces of the claws (21) and (21) are located along the inside of the annular step (14). Become
The outer body (1) is positioned concentrically with the burner (4).
Moreover, the posture of the outer body (1) can be changed in the rotation direction while the positioning state is maintained.

In the second embodiment, all the claws (21) and (21)
Is located on one circumference concentric with the burner (4), but a part of the claws (21) (21)
It may be configured such that every other three claws (21) (21) are arranged on the one circumference. Note that the positioning means may be provided on the pawls (21) and (21) of the virtues (2).

Further, the flange portion (11) is not always necessary, and may be a curl portion curling outward. Further, the annular frame (12) of the first embodiment is provided
It may be formed integrally with (11).

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a use state according to a first embodiment.

FIG. 2 is a perspective view of an annular frame (12).

FIG. 3 is an enlarged sectional view of a connecting portion between the annular frame (12) and the outer body (1).

FIG. 4 is an enlarged plan view of a connecting portion between the annular frame (12) and the outer body (1).

FIG. 5 is a plan view showing the relationship between the annular frame (12) and the claws (21) (21).

FIG. 6 is a cross-sectional view showing the relationship between the fitting of the outer lid (7) and the inner lid (6) and the peripheral edge of the cooking pot (3).

FIG. 7 is a plan view of the outer body (1).

FIG. 8 is a sectional view showing a state where only the outer lid (7) is placed on the cooking pot (3).

FIG. 9 is a sectional view of a main part of the second embodiment.

FIG. 10 is an explanatory view of a conventional example.

[Explanation of symbols]

(1): Outer body (2): Gotoku (3): Cooking pot (11): Flange (12): Annular frame (21): Claw (4): Burner (5): Thermal element

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A47J 36/06

Claims (5)

(57) [Claims] A flange (3) projecting outward from an upper end opening.
A cooking pot (3) having an inner lid (6) for closing the opening at the upper end of the cooking pot (3) and an outer lid (7) covering the inner lid (6). In a lid device in which the central portions of the outer lid (7) are connected to each other by a connecting means, a rising portion is provided on a peripheral portion of the inner lid (6) placed in close contact with the collar (31).
(68) is provided, and an annular sealing surface is provided on the periphery of the other outer lid (7) in close contact with the rising portion (68), and the connecting means is allowed to expand and contract in a free state over a certain range, The cooking pot lid device, wherein the connecting means is in the free and extendable state when the rising portion (68) and the annular sealing surface are in close contact with each other. 2. The rising portion (68) is tapered,
The annular sealing surface is tapered from the vicinity of the peripheral edge of the outer lid (7), and is tapered to closely fit the rising portion (68).
2. The lid device for a cooking pot according to claim 1, wherein the device is (73). 3. The cooking pot lid device according to claim 1, wherein the front outer lid (7) is made of iron having a surface covered with an enamel-treated layer. 4. A peripheral wall portion (32) that rises upward from a peripheral edge of a collar portion (31) of the cooking pot (3) is provided on an outer periphery of the skirt portion (73) of an outer lid (7). The cooking surface according to claim 2 or 3, wherein an annular flat surface (74) facing the upper surface of the peripheral wall (32) is provided, and the height of the skirt (73) is lower than the height of the peripheral wall (32). Pot lid device. 5. A center portion between the inner lid (6) and the outer lid (7) is attached to a cylindrical body (66) made of an elastic material and an outer lid (7) attached to the inner lid (6). The connection shaft (72) is configured to be connected in a fitted state, the enlarged head (71) of the distal end portion of the connection shaft (72)
The lid device for a cooking pot according to any one of claims 1 to 4, wherein the lid is detachably engaged with a rib (67) provided on an inner peripheral wall of the cylindrical body (66).