JP2869389B2 - Pressure cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure cooker for cooking rice or boiled food by applying pressure.

[0002]

2. Description of the Related Art It has long been known to cook and cook delicious rice by increasing the pressure in a pot containing water and rice.

In the case of a rice cooker, if the rice is cooked at a pressure higher than the atmospheric pressure, for example, at a pressure of 1.1 kgf / cm ² ,
It has been elucidated that it will be particularly delicious.

As such prior art, Japanese Patent Application Laid-Open No. 6-46956 filed by the present applicant is presented.

[0005] However, the same applies to the case of the above-mentioned prior art and other pressure cookers, but when cooking rice by increasing the pressure, not only the pot but also the opening of the pot is sealed. A large pressure is also applied to the lid, which acts as if the lid is pushed up and opened.

[0006]

As a result, a large stress also acts on the lock device provided on a part of the lid for preventing the lid from being opened, and the lock device is damaged, or the lock is released and the lid is released. It was very dangerous to open it suddenly.

[0007] If each of the components constituting the lock device is made of a thick metal or a strong material and has a robust mechanism, the pressure in the pot is applied to the entire lid, and this lid is used. Was sometimes deformed or suddenly damaged. This is because the pressure in the pot is applied to the lid which is in a horizontal plane because the pressure in the pot is blocked by the hinge portion of the lid and the locking device due to the robustness of the locking device.

According to the present invention, the locking device for the lid is more reliably locked with the rise in the pressure in the inner pan, thereby preventing damage to the locking device and sudden opening of the lid, and deformation and breakage of the lid. Is prevented.

[0009]

SUMMARY OF THE INVENTION The present invention firstly provides a cooker main body which accommodates an inner pot and has a hinge portion on one side and an unlocking button and a stopper on the other side. A lid that is pivotally supported by the hinge portion to be openable and closable, a middle lid that covers the upper opening of the inner pan, and a lid that is disposed in the lid and that is pivotally supported on one side by the hinge portion and on the other side. A reinforcing plate extending to a position opposite to the hinge portion, and linked to the unlock button to rotatably support the other side of the upper surface of the reinforcing plate and have a lower portion when the lid is closed. A locking plate provided with a locking portion for locking to the stopper, and by operating the lock release button, the locking plate is rotated around the upper surface of the reinforcing plate as a fulcrum and the locking portion and the stopper are This is to release the locked state.

In the second aspect of the present invention, an outwardly extending flange is formed on the periphery of the upper opening of the inner pan, and the axis of the locking plate and the position of the hook portion substantially coincide with each other in the vertical direction. The stopper is directly or indirectly applied below the flange.

Third, the present invention has a third aspect in which the lock release button has a hook portion, and the locking plate has an L-shaped side surface.
The upper part has an engaging piece, and the lower part is provided with a locking part which is engaged with the stopper formed on the left and right with the engaging piece therebetween, while the stopper also corresponds to the locking part. A plurality of hooks are formed on the left and right sides, and the hook is driven by the engaging piece to rotate the locking plate and release the hook between the hook and the stopper in accordance with the operation of the lock release button. is there.

[0012]

[0013]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a main part of a pressure cooker of the present invention in a normal state where pressure is not applied, FIG. 2 is a partial cross-sectional view of the same, FIG. FIG. 5 is a partial cross-sectional view of a cover showing an application example when the pressure is increased.

(1) is a cooking device main body, which is constituted by the following members. (2) is a synthetic resin frame, (3)
Is a storage case provided inside the frame (2) and having a mounting portion (W) on the upper periphery for mounting a flange of an inner pot described later, and (4) is provided at the bottom of the storage case (3). An induction heating coil (hereinafter referred to as a heating coil) serving as a heat source, (5) is a magnetic inner pot removably housed in the storage case (3), and extends outward at the periphery of the upper opening. A flange (F) is formed. (6) is a ring-shaped fixing frame for fixing the respective upper peripheral edges of the frame (2) and the storage case (3), and a hinge part (7) is provided on one side.
have.

(8) Reference numerals (8) denote a plurality of metal stoppers provided on the left and right sides of the storage case (3) and fixed to the lower portion of the mounting portion (W). (9)
Is an operation display section provided on the frame (2) at a position opposite to the hinge section (7), and (10) is near the operation display section (9) and is not shown in detail but is rotated by an axis. An operation part (11) exposed to the outside by a lock release button movably provided, and a hook part (12) to a part entering the inside.
The operation unit (1) is always operated by the spring (13).
1) is urged upward.

A cover (14) is pivotally supported on one side of the cooking device main body (1) so as to be openable and closable, and is constituted by the following members. (15) is an outer lid, (16) is an inner lid fixed by forming a space (17) with the outer lid (15), (18)
Is an inner lid detachably attached to the inner lid (16) and covers the opening of the inner pot (5), and (19) is an outer lid (1).
5) A steam vent tube communicating between the inner lid (16), (20) a receiving portion provided at the center of the lower surface of the outer lid (15), and (21) disposed in the space (17) and parallel to each other. Bent piece (22) (2
A reinforcing plate having 2), one side of which is pivotally supported by the hinge part (7), and the other side is extended to a position opposite to the hinge part to face the operation part (11); Shaft holes (2
3) and (23) and stretch holes (24) and (24) are provided.

A transmission mechanism (25) is disposed in the space (17) and fixed at a position relatively close to the operation part (11) of the reinforcing plate (21). The transmission mechanism has a vertically long guide groove (26). A transmission plate (29) having a member (27) and a guide piece (28) fitted in the guide groove (26) and moving up and down in the guide member (27), and a push-up spring for urging the transmission plate upward (30) and (30).

A pressure release button (31) is provided above the transmission plate (29) and is provided on the outer lid (15) so as to be vertically movable. The pressure release button is always urged upward by a return spring (32). I have.

Reference numeral (33) denotes a metal locking plate fixed on the upper surface of the reinforcing plate (21) and having an L-shaped side surface. The locking plate is horizontally long at the top and slightly inclined toward the unlock button (10). It has holes (34), (34), an operating piece (35) extending toward the transmission mechanism, and an engaging piece (36) located at the upper part of the hook (12), and the stopper (8) at the lower part.
It has a plurality of hooks (37) (37) for hooking on (8), and further has stretching pins (38) (38) provided near the long holes (34) (34). I have. (39) is a return spring that is stretched between the stretch holes (24) and (24) and the stretch pins (38) and (38), and always stops the latch portions (37) and (37) with the stoppers (8) and (38). 8) The bias is applied to the side.

(40) The locking plate (33) is rotatably supported on the lid (14) by passing through the shaft holes (23) and (23) and the long holes (34) and (34). With the shaft, the reinforcing plate (2
It is located on the upper surface of 1).

The transmission mechanism (25) and the retaining plate (33) are engaged with the stoppers (37) and (37) with the stoppers (8) and (8) as the inner lid (18) rises. A stop movable pressure mechanism (41) is configured.

(42) is a safety valve provided on the inner lid (18) and inserted into the steam vent cylinder (19), and (43) is also provided at the center of the inner lid (18). 2
An engagement portion having a steam vent valve (44) engaging with 0);
(45) is a pressure responsive valve provided at a position of the inner lid (18) facing the transmission mechanism (25).

A display box (46) is formed integrally with the inner lid (18), penetrates the upper portion of the locking plate (33), and is provided to face the display window (47) of the outer lid (15). 48)
Is a lamp substrate for displaying the rice cooking process and the pressure state in the inner pot (5) disposed in the display box (46).

Next, the rice cooking operation will be described. Inner pot (5)
In a normal state where there is no pressure increase in the inside, the inner cover (18) does not rise and the locking plate (33) has a pivotal support position of the long holes (34) and (34) of the lock release button (10) as shown in FIG. ) Side.

In this state, the plate (A) (see FIG. 1) extending to the hook portions (37) (37) and the stoppers (8) (8)
Are parallel to each other in the vertical direction. When the lock release button (10) is operated, the hook (12) easily pushes up the engaging piece (36) to raise the hooks (37) and (37). The locked state (locked state) between the stopper (8) and the stopper (8) can be released.

In the normal state shown in FIG. 1, when the heating coil (4) is energized and an eddy current is generated in the inner pot (5),
The inner pot (5) itself generates heat and heats water and rice. The pressure in the inner pan (5) rises with the heating, and the pressure becomes 1.1 kgf.
When the pressure reaches / cm ² , the steam is released from the steam vent valve (44) and released to the atmosphere via the steam vent cylinder (19).

On the other hand, the pressure of the inner pot (5) at this time pushes up the entire inner lid (18), and the pushing force of the inner lid (18) is at the position shown by (P) in FIG. At 16), the entire lid (14) is pushed up.

As described above, one side of the reinforcing plate (21) is pivotally supported by the cooker body (1), and the other side is the hooks (37) (3).
7) and the stoppers (8) and (8) are locked, so that the pushing force of the lid (14) is reduced by the reinforcing plate (2).
1) Overall, hinge part (7) and latching device ((8), (8))
And (37), (37)), and in particular, a force is applied to the locking device serving as a movable mechanism to release the locked state.

However, as shown in FIG. 1, the force for releasing the locked state is applied to the shaft (40) of the locking plate (33).
, Hooks (37) (37) and stoppers (8) (8)
Are substantially coincident with each other in the up-down direction, and are transmitted from the engaging portions (37) (37) of the engaging plate (33) to the stoppers (8) and (8), and the stopper is moved to the storage case ( The mounting portion (W) is pushed up through the flange (F) of the inner pot (5) of 3), and the stoppers (8) and (8) are reinforced by sandwiching the inner lid (18) and the inner lid (16). The plate (21) is drawn.

That is, as the pressure in the inner pot (5) increases, the flange (F) of the inner pot (5), the inner lid (18),
Reinforcing plate (21), locking plate (33) (stopper (8)
(8)) is integrated.

However, the locking devices ((8), (8) and (3)
7) The force applied to (37) to release the hooked state is caused by one side of the reinforcing plate (21) being pivotally supported by the cooker main body (1), so that the lock release button (10) is used. Since the lid (14) is tilted and pushed up in such a manner that the side is greatly opened, the pivot position moves to the pivot side of the lid (14) as shown in FIG.

With the movement of the pivot position, the locking plate (3
The whole upper part of 3) is slightly moved to the unlock button (10) side, and the plate (A) extended to the hooks (37) and (37) as shown in FIG. The hooking portions (37) and (37) and the stoppers (8) and (8) are firmly hooked with each other because they are slightly inclined with respect to them.

That is, as the pressure in the inner pot (5) rises, the hooks (37) and (37) are gradually hooked so as to bite into the stoppers (8) and (8). As a result, the higher the pressure, the stronger the locking state.

Then, as the rice cooking is completed and the pressure in the inner pot (5) gradually decreases, the inner lid (18) descends to its original position, and the lid (14) also descends to lock the plate (14). The pivot support position of 33) returns to the position shown in FIG.

In the state where the pressure in the inner pot (5) is increasing, the lid (1) may be removed for some reason.
4) When it becomes necessary to open the pressure release button (31) against the return spring (32),
The pressure responsive valve (45) is pressed through the transmission mechanism (25), and the inside of the inner pot (5) is communicated with the atmosphere by the pressure responsive valve to release the pressure in the inner pot (5). it can.

For this reason, the inner lid (1
8) and the lid (14) are lowered, and the locking plate (3)
The support position of 3) is returned to the position shown in FIG. 1 to facilitate release of the locked state.

An application example of FIG. 5 will be described as a structure for externally monitoring the pressure state in the inner pot (5). This application example utilizes the fact that the locking plate (33) rotates from the state shown in FIG. 1 to the state shown in FIG. 4 with an increase in pressure, and a magnet (49) is attached to the locking plate (33). The normally open reed switch (50) is fixed to the lamp substrate (48).

When the locking plate (33) in the normal state is at the position shown in FIG. 1, the magnet (49) and the reed switch (50) are close to each other and the pressure lamp (51) is off. . When the pressure in the inner pan (5) rises, the locking plate (3
3) is rotated to move to the position shown in FIG. 4, so that the locking state between the locking portions (37) and (37) and the stoppers (8) and (8) becomes strong, and the magnet (49) is connected with the lead. Since the switch is away from the switch (50), the reed switch is closed and the pressure lamp (51) is lit to indicate that it is in a pressure state.

[0039]

As described above, the present invention provides a cooker main body having an unlock button and a stopper, a cooker main body provided in a lid body, one side pivotally supported by a hinge part, and the other side opposite to the hinge part. And a locking plate that is rotatably supported on the other side of the upper surface of the reinforcing plate and locked to the stopper. When the lid is opened, the lock release button is operated. The locking plate is rotated around the upper surface of the reinforcing plate as a fulcrum to release the locking of the locking portion and the stopper. To prevent the locking device from being damaged or the lid from being suddenly opened, and to prevent the lid from being deformed or damaged.

An outwardly extending flange is formed on the periphery of the upper opening of the inner pan, and the axis of the locking plate and the hooking position of the hooking portion substantially coincide with each other in the up-down direction, so that the stopper is moved. Since it is directly or indirectly applied below the flange, the inner pan and the lid that are aligned vertically will be hooked up and down, and the locking plate will be raised with the rise in pressure of the inner pan. The lifting force applied to the stopper via the flange is suppressed by the flange, and the inner pot, the reinforcing plate, the locking plate, and the stopper are integrated, so that the overall strength of the cooking device can be further increased.

The lock release button has a hook portion, the locking plate has an L-shaped side surface, and has an engaging piece at an upper part thereof and a lower part with the engaging piece therebetween. A plurality of hooks are provided on the left and right corresponding to the hooks, and a plurality of the stoppers are also formed on the right and left corresponding to the hooks. Since the locking plate is rotated following the engagement piece to release the locking between the locking portion and the stopper, the locking portion at the tip of the locking plate is increased by operating the lock release button. It can be moved to release the lock with the stopper reliably, and there are multiple lock points, which ensures the locking of the lid when the pressure of the inner pan rises, and the lid is left and right in the locked state There is no backlash. In particular, since the engaging piece is provided between the engaging portions formed on the left and right, when the lid is opened, the force of the engaging portion is evenly applied to the plurality of engaging portions via the engaging pieces, and the lid is moved right and left. It can be opened smoothly without rattling.

Further, the stopper and the engaging portion are
Since it is a plurality of juxtaposed on the left and right, there are a plurality of hooking points, which ensures that the lid is hooked when the inner pan pressure rises and that the lid rattles left and right in the hooked state Absent.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part showing a state where pressure is not applied to a pressure cooker of the present invention.

FIG. 2 is a partial sectional view of the same.

FIG. 3 is an external perspective view of an essential part of the same.

FIG. 4 is a cross-sectional view of a main part when pressure increases from the normal state of FIG. 1;

FIG. 5 is a partial cross-sectional view of a lid showing an application example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooker main body 4 Heat source 5 Inner pan 8 Stopper 10 Lock release button 11 Operation part 12 Hook part 14 Lid 18 Inner lid 21 Reinforcement plate 33 Locking plate 34 Long hole 36 Engagement piece 37 Hook part 40 Shaft 41 Pressure movable mechanism

Continued on the front page (72) Inventor Tsutomu Yamaguchi 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. (72) Inventor Isamu Yamazaki 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. In-company (72) Inventor Norio Yamane 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. (56) References JP-A-3-66316 (JP, A) JP-A-6-2710 (JP) JP-A-6-46957 (JP, A) JP-A-4-187117 (JP, A) JP-A-5-13323 (JP, U) JP-A-56-4530 (JP, U) JP-A 2-74658 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) A47J 27/00-27/64

Claims (3)

(57) [Claims] 1. A cooker main body which accommodates an inner pot and has a hinge portion on one side and an unlocking button and a stopper on the other side, and opens and closes one side of the cooker main body pivotally supported by the hinge portion. A free lid, a middle lid that covers an upper opening of the inner pan, and a lid disposed inside the lid, with one side pivotally supported by the hinge part and the other side up to a position opposite to the hinge part. An extended reinforcing plate, which is linked with the lock release button, is rotatably supported on the other side of the upper surface of the reinforcing plate, and has a lower portion provided with a lower portion which is locked by the stopper when the lid is closed. Operating the lock release button to rotate the locking plate with the upper surface of the reinforcing plate as a fulcrum to release the locked state between the locking portion and the stopper. Pressure cooker. 2. An outwardly extending flange is formed on a periphery of an upper opening of the inner pan, and a shaft of a locking plate and a hooking position of a hooking portion.
The pressure cooker according to claim 1, wherein the position of the stopper substantially coincides with the vertical direction, and the stopper is directly or indirectly applied below the flange. 3. The lock release button has a hook portion, the locking plate has an L-shaped side shape, and has an engaging piece at an upper part thereof and a lower part with the engaging piece therebetween. Multiple left and right
The hooking portion for hooking the stoppers form provided, whereas,
The stopper also has multiple left and right shapes corresponding to the hooks.
Form, claims the hook portion with the operation of the lock release button and cancels the latched state between the engaging those pieces by following the pivots the locking plate engagement portion and the stopper 2. The pressure cooker according to 1.