JP5753297B1 - Pot and lid. - Google Patents

Abstract

An object of the present invention is to improve the structure of a pot and lid structure using a hinge, which is difficult to handle, to a structure that is easier to use. A plurality of recesses are provided in the shaft portion of the shaft body portion of the hinge body and either of the pan receiver NU or the pot body connected by the hinge body H1A and the lid body F, and are elastically engaged with the recesses. Convex is provided in the cylindrical body of the cylindrical body portion H, the cylindrical body is provided with a crack in the axial direction at one location, and the elastic part is provided in the cylindrical body in at least one direction separated by the crack, and the pot holder NU or the pot body Or a means for joining and pivoting to the lid F, and either the pan receiver NU or the pan body, the lid F is openable and detachable, provided with an opening angle holding mechanism, and a plurality of lids In addition to providing a folding structure, a structure that uses a single lid or multiple lids for selection is provided, and a sound generation structure is provided to notify the boiling. [Selection] Figure 1

Description

The present invention relates to a pan and a lid having a structure in which one member and the other member are pivotally attached using a hinge mechanism, which is detachable and can be opened and closed and held at an arbitrary opening angle.

Although the pan and lid described in the following patent document are pivotally attached, none have been commercialized.

Patent 3683244 Japanese Utility Model Sho 50-121853 [Pot lid support] Patent 4777718 [Hinge mechanism] Patent 4104083 [Pot and lid using hinges]

There is a technique (for example, Patent Document 1) that is detachable and has a first hinge and a second hinge to provide a simpler lock structure.
A support lid having a knob lid holding means and a means for attaching the pot lid to the hooking means, and a support rod pivotally mounted on the knob lid holding means, and the support rod being slidably held However, there is a technique (for example, Patent Document 2) in which a connection guide plate rotatably attached to the attachment means is provided.
A hinge body in which a cylindrical body and a shaft body portion are fitted, wherein the shaft body portion has a plurality of recesses in a circumferential axial direction, and a protrusion that elastically engages with the provided recesses. The cylinder is provided with a split in the axial direction at one location, and an elastic part is provided in the cylinder in at least one direction separated by the crack so that the cylinder and the shaft can be rotated. There is a technique (for example, Patent Document 3) related to a lock structure that can be held and locked at multi-stage angles and a structure that can also control forward and reverse rotation.
A hinge body fitted with a cylindrical body and a shaft body by a pan and a lid using the hinge mechanism of Patent Document 3, wherein the shaft body is circumferentially provided with a plurality of recesses in the axial direction (at least 1 in the axial direction). A convex portion (a plurality of concave portions) that is elastically engaged with the provided concave portion, and the cylindrical body is provided with a crack in one axial direction. An elastic part is provided in a cylindrical body separated in at least one direction by the crack, and one of the hinges having the shaft body part is fixed to the pan and the other hinge having the cylindrical body is fixed to the lid. There is a technique (for example, Patent Document 4) in which the lid and the pan are fitted so as to be freely opened and closed, the opening angle is maintained at a set angle, and the lid and the pan are detachable and do not fall off.

It is a problem to make the thing using the hinge mechanism of the same patent document 3 in the improvement invention of the said patent document 4 more convenient.

1st invention is the hinge body H which connected the lid body with either the pan receptacle NU or the pan body N2-1, and the said hinge body is comprised by the shaft body part 4 and the cylinder part 3, The shaft portion of the shaft body portion has a plurality of recesses A in the axial direction on the circumference, and a protrusion ZB that elastically engages with the provided recess portions is provided in the tube body of the tube body portion. The cylindrical body is provided with a split C in the axial direction at one location, and an elastic part is provided in the cylindrical body separated in at least one direction, and either a pot holder or a pot body or a lid body or the other is provided with means for joining pivot the shaft portion (fitting, sandwiching bond, integrally molded and fixed etc.), or pot receiving body or pot body, the other either the lid to the cylindrical portion There is a means for jointing (fitting, narrowing, integral molding, adhering, etc.), and either the pan receiver or the pan body and the lid body can be freely opened and closed. And an opening angle holding mechanism that is detachable, and further provided with a plurality of sheet folding means configured to bend the pot body and the lid body into a plurality of sheets, thereby dividing the lid into a plurality of the divided lids, The lid is connected by a hinge body, and a plurality of folding means for the pan body and the lid body are provided with a lock / unlock means, and the lock / unlock means is a C-shaped hinge body. Provided is a pan and a lid provided with an outer cylinder and locked / unlocked by the movement of the outer cylinder in the axial direction so that either a single-body lid or a folded lid can be selected and used.
The second invention provides a pot and a lid according to a first inventions, characterized in that provided with means for releasing the steam in the closed state of the lid, a sound generator that emits sound.
A third invention is a multiple-sheet folding structure of the lid according to the first and second inventions , wherein the multiple-folding structure of the lid is configured so that the recess of the pan holder of the lid opening width holding portion is a lid pivot. A pan and lid characterized in that a plurality of places are provided on both sides in the wearing direction, a convex portion that engages with the concave portion of the pan receiver is provided on the lid body, and the lid and the lid are pivotally attached by a hinge. provide.

The pan and lid are detachable, the lid can be opened and closed with respect to the pan, and the lid and lid are pivoted (connected / joined) with a hinge that can hold the opening angle of the lid. It is no longer necessary to search for the place where it is placed, and by keeping the opening angle near 30 °, the inside of the pan can be confirmed while performing other operations.

By maintaining the lid opening angle at least 3 °, the same effect as the drop lid can be obtained.

The handling of the lid of the hot plate and the wide-mouth pan becomes easier, and since it can be folded in multiple after opening the lid, it does not take up the place of the lid holder (or it is annoying when the lid is standing, the degree of obstruction is reduced) done).

The number of assembly man-hours was reduced by molding a hot plate-type pot holder, a pot holder cylinder, and a lid and a lid cylinder.

When boiling, the lid shakes up and down as it boils, making a rattling sound, informing you that it has boiled, and when boiling and adding noodles, spilling out and moving the lid to adjust the heating Since the opening angle of the lid can be maintained, the opening angle can be further expanded (by vapor pressure) when further spilling is likely to occur, so the spilling degree is reduced.

The lid can now be easily removed from the pan, and the inside of the pan / lid can be easily washed and becomes hygienic.

For example, in a shop where dumplings are used for menus, a pot that can be cooked for several people, and when baking 1 or 2 servings, the lid can be opened only on the front side of the pot, thus saving energy.

Eliminates the hassle of putting the lid on the inside in another place when a dish that needs to be kept warm is in the pot and changing.

This technology can also be used in lunch centers, employee cafeterias, and retort food factories.

Top view of the pan and lid pivoted (connected) with the hinge H1A (-hot plate and wide-mouth pan image). FIG. 2 is a cross-sectional view of the component of FIG. Top view (folded in two) with a rectangular plate pan and lid pivoted (connected). FIG. 4 is a top view, a G / H / J arrow view, and a shaft body side perspective view of the component of FIG. 3. The figure which fitted the hinge body to the lid | cover which pivotally connected (connected) the two-handed pan and the lid | cover with hinge H1. A, The fitting state figure of a cylinder part and a shaft part by the basic structure of a hinge mechanism (lid closed state). B, Operation procedure diagram from the closed state to the open state. C, shaft body part, cylindrical body perspective view, and insertion procedure diagram. A, hinge angle setting design procedure diagram. B, pronunciation structure diagram. C, opening angle end stopper setting guidelines. A, B, E, F, fitting image sectional view C, D, narrow image sectional view. The top view which attached the lid | cover of the hot plate type and the wide-mouthed pan pivotally, and the figure which showed the cover opening holding state with the virtual line. The top view which folded the lid | cover of the hot plate type and the wide-mouthed pan into two, and the figure which showed the cover opening holding state with the virtual line. 6 is a diagram showing, in phantom lines, a rectangular hot plate type lid opening width holding state in which one direction of the pan body is set to a middle height.

The present application is an improved invention of the above-mentioned Patent Document 4, and stands in reflection that could not be put into practical use with the present invention, and mainly focused on the structure corresponding to flames such as gas, such as hot plates and IH-compatible pans. However, the hinge structure described in this application is a processing method that can reduce the number of processing steps by molding synthetic resin in the current technology. Resin has also been invented with a large heat resistance (for example, 66 nylon), so there are some considerations for flames such as gas, but mainly for electric cooker pans (hot plate type, electromagnetic cooking pan) Embodiment.

Each dimensional relationship in the drawings is enlarged for important portions, exaggerated where details are difficult to understand, and reduced when describing wide portions or portions that are less important in the present invention. Thus, the dimensions between and within the drawings are not proportional, and are not actual or scaled.
If the distance between the lines is narrow, it is likely to become a single line that is black and thick at the scanning stage.
Furthermore, parts other than the basic (main) mechanism of the present invention are omitted between the drawings.
Furthermore, although the convex / concave dimensions of the fitting structure by elastic deformation may be about 0.1 mm depending on the material used, it cannot be shown in the figure, so the exaggerated description of the size of the elastic piece is also the same.

The hinge H1A and the main hinge H6 of the first invention are hinge bodies in which cylindrical body portions H1Aa, b, c (H6a, b, c) having a cylindrical body and a shaft body portion H1Ap having a shaft body H1Aj are fitted. Either the connected pan receiver or the pan body and the lid body, the shaft portion of the shaft body portion of the hinge body portion has a plurality of recesses in the axial direction on the circumference, and the recesses provided therein In addition, a convex portion that is elastically engaged is provided on the circumferential surface of the cylindrical body, and the cylindrical body of the cylindrical body portion H is provided with a split C in one axial direction, and the cylindrical body separated in at least one direction. Is provided with an elastic part B (and its cylindrical body has elasticity) and a single axial crack C, and is provided in a cylindrical body separated in at least one direction. Alternatively, either one of the lids F is provided with means for joining and fitting (fitting, narrowing, integral molding, adhering, etc.) to the shaft body. The pan holder or the other of the pot body and the lid body is provided with means for joining and pivoting (fitting, narrowing, integral molding, adhering, etc.) to the cylindrical body, and the pot receiver or pot The body and lid are openable and detachable, and are detachable and hold the opening angle.
The setting of the holding position of the lid opening angle and the number of holding places can be designed and set in the range of 0 to 240 °, but 0 to 240 ° is the range that can be opened due to the relationship between the pan and the lid, It is sufficient that the opening angle range of use with the lid is in the range of 0 to 180 ° (pivoting).

The hinge body of the present invention can be designed to set the opening holding angle in multiple stages according to the use conditions described in the previous section, and further has a stopper function that does not open beyond the set opening end (see FIGS. 3 and 7).

The hinge for opening and closing the pan and lid (H1) and the hinge for folding the lid and lid (H2) use the same hinge mechanism of Patent Document 3 (Patent 4777718), but the set angle is the pan used (electromagnetic cooking) Large-sized pans such as one-handed pans, two-handed pans, hot plates, etc. that are used in dishes and IH cooking heaters, and those that use pan receptacles, pans for lunch centers and school lunch cooking etc.) Thus, the design can be set with a degree of freedom at an angle as required.
The setting of the pot lid opening / closing force can also be designed and set with a degree of freedom by setting the size of the unevenness and the gradient of the unevenness set in the shaft body and the cylindrical body.

In the case of the present application, it is preferable that the pan lid opening / closing force of the pan / lid hinge (H1) and the lid / lid folding hinge (H2) is set and designed in a relationship of H1> H2.

FIG. 1 is a configuration diagram in which a pan receiver NU having a hot plate type cylindrical body and a lid body Fa having a cylindrical body are fitted and joined by a shaft body H1a as an example. The cylindrical body H1Ab and the cylindrical body H1Ac are arranged above and below the body (as viewed in the drawing), and the lower cylindrical body is provided with at least one axial crack in the circumferential portion and a convexity of the cylindrical body wall, A fitting structure with the shaft body is provided (Fig. C). The upper cylinder is provided with at least one axial crack in the circumference and a convex ZB on the wall of the cylinder, and is integrally formed with the pot holder. And
The lid portion having the cylindrical body portion is provided with an intermediate cylindrical body H1Aa and integrally formed with the lid FA, and the intermediate cylindrical body is a cylindrical body having a convexity of the wall of the cylindrical body and having no crack C. They are a top view (A) and a HH sectional view (B) in which the pan receptacle part and the lid part are fitted and joined by a shaft part.

The projections of the upper, middle, and lower cylindrical body walls are provided so as to be straight in the axial direction when the lid is closed, and the shaft body portion H1d is inserted until the end surface of the shaft body gripping portion H1Ap comes in contact with it. The projection H1At of the fitting structure portion is fitted into the recess of the cylindrical body fitting structure portion, and the shaft body portion can be held,

FIG. 6 (A) shows the meshing state of the shaft portion 4 of one member and the cylindrical portion 3 of the other member in a state where the lid is closed on the pan, and the lid handle TO in FIG. 1A is moved upward. The convex A formed between the concaves in the circumferential direction of the shaft outer wall of the shaft of one member pushes the convex ZB of the cylindrical body wall on one side of the cylindrical part separated by the crack C in the axial direction outward. Until the cylindrical member wall convex portion exceeds the convex portion in the circumferential direction of the outer wall of the shaft (FIG. 6B) and is placed in the concave portion A of the outer peripheral portion of the adjacent shaft member, and then the force is applied to the other member 3. This structure maintains this angle.

To remove the pan receptacle and the lid, the pan receptacle and the lid can be removed as shown in FIGS. 2A and 2B by pulling out the knob H1Ap of the shaft part H1Ad of Bsec in FIG. 1A.

Fig. 1B is a gap that can be opened around 30 ° from the closed state of the lid, and the state in the pan can be monitored. When the lid gets in the way in a state where it is suitable for two to three people to eat dishes in the pan with a gap between putting in, tasting, or taking out the dishes inside Although it is shown that the shaft body part can be removed and the lid body can be removed, the setting of the opening angle is an example, and it is possible to intentionally create a backlash as described in FIGS. 7B and 7C. In addition, the function of the stopper can be set in various ways by designing the convexity of the cylindrical wall, the concave of the shaft, and the convex shape angle (pitch).

2C is a side view with the lid of FIG. 1A removed, and FIG. 2D is an HH sectional view of the lid of FIG. 1A.

FIG. 2E is an only view of the shaft body portion, and the imaginary line represents a cylinder body of a lid body and a pan receiver.

FIG. 6C is an only perspective view of the shaft body portion 4 and the cylinder body 3 having a pivot structure using one shaft body portion and one cylinder body portion described in Bsec of FIG. 5. 4 is a schematic diagram of inserting 4 into a cylindrical body 3 in the direction of an arrow.

Fig. 3 is a long square hot plate type with the lid opening / closing direction being a medium-high pan body in Fig. 1, and the lid can be used by folding it into multiple sheets, and it can also be used as a single lid. The pan receiving body NU6 and the lid body 6Fa, b are pivotally attached. FIG. 1 shows the cylindrical body portion (middle H1Aa) integrally formed with the lid body, whereas FIG. 3 shows the cylindrical body portion. The male part of the fitting structure part K6 is integrally provided therein, and the lid body 6Fa or 6Fa + 6Fb can be fitted and detached.

Further, the hinge body between the lid and the lid is provided with a means for either a single-body lid or a plurality of folded lids, and the means for either the single-body lid or the multiple-folded lid is A structure for locking the movement in the large-diameter direction of a unidirectional cylinder having a crevice c in the hinge body between the lid and the lid (this application adopts a C-shaped outer cylinder) It is locked / unlocked by movement (in the axial direction) so that either a single-body lid or a folded lid can be selected.

Specifically, referring to FIG. 3, a hinge body H7 is provided in the middle of the lid body shown in FIGS. A and B, the left 6Fa right 6Fb lid joint shape is set to the shape described in Fsec, and the cylinder of the lower position hinge body is formed. A C-type outer cylinder R is provided, and the upward movement of the C-type outer cylinder covers the middle cylinder H7b having the crack C to lock the movement of the middle cylinder in the large-diameter direction. It is a structure that becomes a single body lid, and is a multi-sheet folding lid by returning the C-shaped outer cylinder to its original position.
The KK cross-sectional view and the LL cross-sectional view show the movement of the lid and the lid when the left 6Fa right 6Fb lid is bent.

FIG. 4 is a diagram showing the main configuration of the component parts (Assy, Only) of FIG. 3, and the hinge body H6 and the hinge body H7 are a part in which the position of the cylindrical body having the slit groove c is intentionally changed and the lid body. The hinge portion H6 has a fitting structure with the lid, but the fitting structure can be provided on the pan receiver, but is not shown. The operating force for operating the hinge is preferably hinge body H6> H7.

FIG. 5 is an image of a deep pan for an electromagnetic cooker, and the cylindrical body portion and the shaft body portion of FIG. Only the pan is detachable, can be pivotally opened and closed, and has a structure that maintains the opening angle.
The operating procedure of the hinge body is as shown in FIG. 6 (A) in which the shaft portion 4 of one member in the state where the lid is closed on the pan and the cylindrical portion 3 of the other member is shown in FIG. When moved upward, the projection A formed between the recesses in the circumferential direction of the shaft outer wall of the shaft portion of one member is separated by a crack C in the axial direction of the cylinder wall on one side of the tube portion. The projection ZB is spread outward, the cylindrical wall convex portion exceeds the convex portion in the circumferential direction of the outer wall of the shaft (FIG. 6B), and is then accommodated in the concave portion A of the outer peripheral portion of the adjacent shaft body. This structure maintains this angle until a force is applied.

To remove the pan receiver and the lid, the pan receiver and the lid are detached by picking the elastic piece K1d having the fitting structure shown in FIGS.

FIG. 5 (A) takes up as an example a two-handed pan whose outer shape in the drawing of (B) is round,
A hinge body H1 is fitted to the upper left end of the pot body to pivotally attach the pot body 1 and the lid F1.
The hinge body shaft 4 is fitted to the pan body using the fitting structure K1, and the lid body and the hinge body cylinder 3 are fitted to the lid body using the fitting structure. By holding the lid opening angle at least 3 °, the same effect as the dropping lid can be obtained, and by keeping the opening angle near 30 °, other work can be performed. Opening in the vicinity of 60 ° is set at an opening angle that allows you to check the inside of the pan, adjust the heating temperature of noodles, etc., add timing of additional ingredients, and take off the broth to stop the fire. It is in a state suitable for eating food in the pan with two or three people opening in the vicinity of 100 °, with gaps such as adding additional ingredients to the pan, tasting, or taking out the dish inside When the cover gets in the way, the shaft body H1Ad can be pulled out and the cover can be removed. However, the setting of the opening angle is an example, and it is possible to intentionally create a backlash as shown in FIGS. 7B and 7C or to act as a stopper. Various settings can be made by designing the convexity, the concave of the shaft, and the convex shape angle (pitch).

Since FIG. 6 has been described above, it will be briefly described.
A is the basic structure of this hinge mechanism, and the lid and the pan are closed. B is the structure when the shaft body portion and the cylinder body portion move relative to each other, and the projection ZB of the inner wall of the cylinder passes over the projection A of the shaft. It is a state diagram on the way.
C shows a pair of cylinders and shafts, which are fitted in the direction of the arrow in the only view of the shaft body to form a hinge body.

FIG. 7A illustrates that only a necessary portion can be set as a setting angle of the concave portion of the shaft portion.
FIG. 7B shows that the gap between the concave portion of the shaft in the closed state of the lid and the convexity of the inner wall of the cylindrical body is widened in the direction of the opening of the lid. It has a closed structure with a gap (K) that allows the lid opening farthest from the hinge of the lid to move up and down by 0.1 to 2 mm. When the steam boils and the steam escapes, the lid vibrates up and down and makes a rattling sound. vertical and, Ri case der having a structure as sounding mechanism for notifying a sound produced that of boiling, the more the height of the convex of the shaft portion of the opening direction from the lid closed state, the cylinder and the fitted state If the noodles are boiled and wrinkles are about to spill out by providing 2 to 3 protrusions on the shank about half of the convexity on the inner wall of the time, it will open one more stage. It is also possible to make it difficult to spill, and FIG. S provided as a right angle to Mukonai wall can be a stopper at that the concave shape of the shaft portion of the lid open end to be set is provided in the form of engaging said S.

When you want to provide a variety of the above functions, place several types of hinge bodies that can be attached to and detached from the pan body and lid body shown in FIG. 5 separately, and replace them with separate hinge bodies. You can also do things.

FIG. 8 shows an example of a fitting / clamping structure of the hinge body and lid, and the hinge body / cylinder joining means. FIG. 8A shows an elastic piece provided on the shaft body and is removed by operating the elastic one-push button. , image view of the structure shaft body mounting during the hinge contains the protrusion of the fitting landing migraine recess of the fitting portion by an elastic restoring force pushing the cylindrical portion and the cylindrical body is fitted.
FIG. B is an image view of a structure in which a fitting 3d and a recessed 3d are provided on the shaft body and the cylindrical body portion to be fitted.
FIG. C is a view in which the upper part of the pan is attached to the hinge and the hinge is urged in the narrowing direction to narrow the hinge. If the operating lever H3a is operated in the direction of the arrow, the hinge body can be removed from the pan. When the lever is released toward the edge of the pan 1 in the state of pulling, the hinge body H1 can be attached to the top of the pan. At this time, the lid is fitted with the fitting structure of FIG.
FIG. E is a view of fitting to the fitting structure K1 provided at the upper part of the pan as viewed in the direction of arrow E in FIG. 5 and is removed by the operation of picking the elastic pieces of the fitting from the left and right sides. When the fitting portion K1K is fitted into the body K1h, the fitting is performed by the elastic restoring force of the elastic piece K1d of the fitting body.
Fig. F shows the fitting structure of the lid and the hinge body, whereas Fig. E shows the fitting structure of the pan and the hinge body.

Fig. 9 shows the hot plate type pan holder and either the cylindrical part of the hinge or the shaft part integrally molded, and either the cylindrical part of the hinge or the shaft part is fitted to the lid. It is the figure which has been fitted to the lid provided with the structure, and is an example diagram in which only the lid is detachable with the same structure as FIG. 8F.

FIG. 10 is a flat lid that is flattened without making the lid of FIG. 9 flat and bent, and either the pot body or the cylindrical part or the shaft part of the hinge is integrally molded. The body has a structure in which a fitting structure is provided on either the cylindrical body portion or the shaft body portion of the hinge and is fitted on the lid body. The function, operation, angle setting, etc. of the hinge body are shown in FIG. , 3, 5 and 9 are omitted.

FIG. 11 shows a rod-like shape in which a plurality of concave portions Sa for holding the lid opening width are provided on both sides of the pan receiving body S in the direction of pivotal attachment of the pan holder S, and are fitted into the recesses of the pan receiving body for holding the lid opening width. The convex body Sb is provided in the front-rear direction near the right end of the lid, and the opening width between the lid and the pan is held in multiple stages by being fitted into any one of the plurality of concave portions for holding the lid opening width of the pan receiver. The lid opening / closing hinge and the lid fold folding hinge are made by using a conventional hinge (generally called a hinge) in which only a shaft is inserted into the cylinder. An object that does not use a hinge mechanism (the lid opening / closing hinge in the top view is described because the hinge mechanism H1 of the present application can also be used), and a conventional hinge (generally called a hinge) H3 is used. This is an example of a multi-sheet cover fold folding structure.

The main structure of this application is that the pan and the pivot structure of the pan holder and lid or the multi-lid folding structure for home appliances, such as hot plates and pans compatible with IH cooking heaters. It can also be used for pans and lids used for employee cafeterias and school lunches, and can be used more widely if heat-resistant synthetic resins that cope with flames such as gas are improved.

Claims (3)

It is pivotally attached by a hinge body in which either a pot holder or a pot body and a lid body are connected, and the hinge body is composed of a shaft body part and a cylindrical body part, and the shaft part of the shaft body part includes A plurality of concave portions are provided in the axial direction on the circumference, and convex portions that are elastically engaged with the provided concave portions are provided on the cylindrical body of the cylindrical body portion, and the cylindrical body has a single axial direction. This is a structure in which an elastic part is provided in a cylindrical body separated in at least one direction, and either the pan receiver or the pan body or the lid body is joined and attached to the shaft body part. A pot receptacle or pot body, the other of the lid body is provided with means for joining and pivoting to the cylindrical body portion, either the pot receiver body or the pot body and the lid body can be opened and closed, and It is detachable and has an opening angle holding mechanism, and the pan body and the lid body are bent into a plurality of sheets. The lid is divided into a plurality of means and the divided lid and the lid are connected by a hinge body, and a locking / unlocking means is provided in the plurality of means for bending the pan body and the lid body. The locking / unlocking means is provided with a C-shaped outer cylinder in the hinge body, and is locked / unlocked by the movement of the outer cylinder in the axial direction, and either the single lid or the folded lid is used. A pot and lid that can be used for selection.
The pan and lid according to claim 1 , further comprising means for releasing steam in a closed state of the lid and a sound generation means for generating sound. 3. A plurality of lid folding structures according to claim 1 and claim 2 , wherein the lid folding structure includes a plurality of recesses in the pan holder of the lid opening width holding portion on both sides in the lid pivoting direction. A pan and a lid, characterized in that a convex portion that is provided at a location and engages with the concave portion of the pan receiver is provided on the lid, and the lid and the lid are pivotally attached by a hinge.