CN116919154A - Pressure cooker - Google Patents

Abstract

A heating cooker capable of improving use convenience is provided with: the lid locking mechanism includes a housing provided with an upper opening, a pot accommodated in the housing, an outer lid movable to a closed position covering the upper opening and an open position away from the upper opening, an inner lid attached to the outer lid and openably covering the opening of the pot, a clamping portion movable to a clamping position clamping the inner lid and a flange portion of the pot and a clamping releasing position, a lid locking portion movable to a locking position holding the outer lid in the closed position and a locking releasing position, an operating portion attached to the outer lid, a clamping portion moving mechanism moving the clamping portion, and a lid locking portion moving mechanism moving the lid locking portion, wherein when the operating portion moves in one direction from the initial position to the first position, the clamping portion moving mechanism moves the clamping portion to the clamping releasing position, and when the operating portion moves further in one direction to the second position, the lid locking portion moves to the locking releasing position.

Description

Pressure cooker

Technical Field

The present invention relates to a pressure cooker.

Background

Conventionally, as such a pressure cooker, for example, a pressure cooker described in patent document 1 is known. Patent document 1 discloses a pressure cooker including a flange portion for holding a pan and a holding portion for holding an inner lid, wherein the inner lid is configured to be pressed by pressure in the pan to move the holding portion upward, and the pressure in the pan is not applied to the outer lid.

Prior art literature

Patent literature

Patent document 1: japanese patent application laid-open No. 2018-140174

Disclosure of Invention

Problems to be solved by the invention

In the conventional pressure cooker, there is room for improvement from the viewpoint of further improving the convenience of use.

Accordingly, an object of the present invention is to solve the above-described problems and to provide a pressure cooker capable of improving the convenience of use.

Means for solving the problems

In order to achieve the above object, the present invention is configured as follows.

According to the present invention, there is provided a pressure cooker, wherein,

the pressure cooker is provided with:

a housing provided with an upper opening portion;

an outer cover movable to a closed position covering the upper opening portion and an open position separated from the upper opening portion;

a pan having a flange portion and accommodated in the housing through the upper opening portion;

an inner lid detachably attached to the outer lid and adapted to cover an opening of the pot in an openable and closable manner in conjunction with an opening/closing operation of the outer lid;

a clamp portion movable to a clamp position for clamping the inner lid and the flange portion in a thickness direction and a clamp release position away from the inner lid and the flange portion;

a cover locking portion movable to a locking position for engaging with a part of the housing to hold the outer cover in the closed position and an unlocking position for unlocking from the engagement with the part of the housing;

an operation unit which is provided in the cover and is capable of relative movement with respect to the cover;

a clamp portion moving mechanism that moves the clamp portion in conjunction with movement of the operation portion; and

a cover lock part moving mechanism for moving the cover lock part in conjunction with the movement of the operation part,

the clamping portion moving mechanism moves the clamping portion from the clamping position to the clamping releasing position when the operating portion moves in one direction from an initial position to a first position,

the cover lock portion moving mechanism moves the cover lock portion from the lock position to the lock release position when the operating portion is further moved from the first position to the second position in the one direction.

Effects of the invention

According to the present invention, a pressure cooker capable of improving the convenience of use can be provided.

Drawings

Fig. 1 is a perspective view of a pressure cooker according to an embodiment of the present invention.

Fig. 2 is a sectional view taken along line A1-A1 of the pressure cooker of fig. 1.

Fig. 3A is a perspective view illustrating a case where an operation part of the pressure cooker of fig. 1 is relatively moved with respect to an outer cover.

Fig. 3B is a perspective view illustrating a case where an operation part of the pressure cooker of fig. 1 is relatively moved with respect to an outer cover.

Fig. 3C is a perspective view illustrating a case where an operation part of the pressure cooker of fig. 1 is relatively moved with respect to an outer cover.

Fig. 3D is a perspective view illustrating a case where an operation part of the pressure cooker of fig. 1 is relatively moved with respect to an outer cover.

Fig. 4A is a perspective view showing each part and each mechanism that move in conjunction with the relative movement of the operating part of the pressure cooker of fig. 1 with respect to the outer cover.

Fig. 4B is a perspective view showing each part and each mechanism that move in conjunction with the relative movement of the operating part of the pressure cooker of fig. 1 with respect to the outer cover.

Fig. 4C is a perspective view showing each part and each mechanism that move in conjunction with the relative movement of the operating part of the pressure cooker of fig. 1 with respect to the outer cover.

Fig. 4D is a perspective view showing each part and each mechanism that move in conjunction with the relative movement of the operation part of the pressure cooker of fig. 1 with respect to the outer cover.

Fig. 5A is a cross-sectional view showing the positions of the cover locking part, the cover locking part moving mechanism, and the locking part moving in conjunction with the relative movement of the operating part when the operating part of the pressure cooker of fig. 1 is in the position shown in fig. 4A.

Fig. 5B is a cross-sectional view showing the positions of the cover locking part, the cover locking part moving mechanism, and the locking part moving in conjunction with the relative movement of the operating part when the operating part of the pressure cooker of fig. 1 is in the position shown in fig. 4B.

Fig. 5C is a cross-sectional view showing the positions of the cover locking part, the cover locking part moving mechanism, and the locking part moving in conjunction with the relative movement of the operating part of the pressure cooker of fig. 1 when the operating part is in the position shown in fig. 4C.

Fig. 5D is a cross-sectional view showing the positions of the cover locking part, the cover locking part moving mechanism, and the locking part moving in conjunction with the relative movement of the operating part when the operating part of the pressure cooker of fig. 1 is in the position shown in fig. 4D.

Fig. 6A is a plan view showing positions of a clamp part and a clamp part moving mechanism that move in conjunction with the relative movement of an operating part of the pressure cooker of fig. 1 when the operating part is located at the position shown in fig. 4A.

Fig. 6B is a plan view showing positions of the clamp part and the clamp part moving mechanism that move in conjunction with the relative movement of the operating part of the pressure cooker of fig. 1 when the operating part is in the position shown in fig. 4B.

Fig. 6C is a plan view showing positions of the clamp part and the clamp part moving mechanism that move in conjunction with the relative movement of the operating part of the pressure cooker of fig. 1 when the operating part is in the position shown in fig. 4C.

Fig. 7A is a cross-sectional view showing positions of a clamp part and a clamp part moving mechanism that move in conjunction with the relative movement of an operating part of the pressure cooker of fig. 1 when the operating part is in the position shown in fig. 4A.

Fig. 7B is a cross-sectional view showing positions of a clamp part and a clamp part moving mechanism that move in conjunction with the relative movement of an operating part of the pressure cooker of fig. 1 when the operating part is in the position shown in fig. 4B.

Fig. 7C is a cross-sectional view showing positions of a clamp part and a clamp part moving mechanism that move in conjunction with the relative movement of an operating part of the pressure cooker of fig. 1 when the operating part is in the position shown in fig. 4C.

Fig. 8A is a cross-sectional view showing positions of a position detecting portion, an exhaust valve, and a clamp portion moving mechanism that move in conjunction with the relative movement of an operating portion of the pressure cooker of fig. 1 when the operating portion is in the position shown in fig. 4A.

Fig. 8B is a cross-sectional view showing positions of the position detecting unit, the exhaust valve, and the clamp moving mechanism, which move in conjunction with the relative movement of the operating unit of the pressure cooker of fig. 1 when the operating unit is located at the position shown in fig. 4B.

Fig. 8C is a cross-sectional view showing positions of the position detecting portion, the exhaust valve, and the clamp portion moving mechanism that move in conjunction with the relative movement of the operating portion when the operating portion of the pressure cooker of fig. 1 is in the position shown in fig. 4C.

Description of the reference numerals

1, a shell; 1A upper opening portion; 2 pot; 3, an outer cover; a 3A hinge shaft; 3a through holes; 4a heating part; a 5-pot temperature sensor; a control unit; 7 an input part; 8, inner cover; a 9 position detection unit; 11 upper wall; 12 pot containing parts; 12A opening parts; a flange portion 21; 31 exhaust holes; 32 an operation section; 32A rotation shaft (first rotation shaft); 32B engagement pins; 33 cover locking part; 34 cover locking part moving mechanism; 34A rotation axis; 35 clamping parts; 36a clamping part moving mechanism; 36A rotation shaft (second rotation shaft); 37 locking mechanism; 38 press pins; 41 bottom inner heating coil; 42 bottom external heating coils; 81 a gasket; 82 vapor vent holes; 83 exhaust valve; 91 a first position detecting element; 92 a second position sensing element; 361a link member; 361A engagement shaft; 362a slide plate; 362A engagement groove; 362B cam slot; 362C inclined surface; 362Ba inclined surface; 363 clamp arm; 363A cam pin; 371 locking pins; 371A axis of rotation; 372 locking the rod.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to this embodiment. In addition, substantially the same components in the drawings are denoted by the same reference numerals.

In the following, for convenience of explanation, terms such as "up", "down" and "side" are used to indicate directions assuming a state in normal use, but the use state of the pressure cooker of the present invention is not limited thereto.

(embodiment)

The overall structure of the pressure cooker according to the embodiment of the present invention will be described with reference to fig. 1 and 2. Fig. 1 is a perspective view of a pressure cooker according to an embodiment of the present invention. Fig. 2 is a sectional view of the pressure cooker of fig. 1. The pressure cooker of the present embodiment is, for example, a pressure cooker.

As shown in fig. 1 or 2, the pressure cooker of the present embodiment includes: a housing 1 provided with an upper opening 1A, a pan 2 accommodated in the housing 1 through the upper opening 1A, and a cover 3 capable of opening and closing the upper opening 1A.

In the present embodiment, the case 1 has a pot housing portion 12 having a bottomed tubular shape provided so as to be recessed inward from the upper wall 11. The upper opening of the pot housing 12 coincides with the upper opening 1A. The pan 2 is detachably accommodated in the pan accommodating portion 12 through the upper opening portion 1A. The pan 2 has an annular flange portion 21 protruding outward from an upper end portion. The inner surface of the pot housing 12 is formed so as to leave a predetermined gap with the outer surface of the pot 2. The pot 2 is filled with a cooking object such as rice and water.

A heating unit 4 for heating the object to be cooked in the pan 2 is provided on the outer peripheral surface of the pan housing 12 inside the casing 1. In the present embodiment, the heating unit 4 is constituted by an induction heating coil unit that inductively heats the pan 2 through the pan accommodating unit 12. The induction heating coil unit includes a bottom inner heating coil 41 and a bottom outer heating coil 42. The bottom heating coil 41 is disposed so as to face the periphery of the center portion of the bottom of the pan 2 with the pan accommodating portion 12 interposed therebetween. The bottom external heating coil 42 is disposed so as to face the corner of the bottom of the pan 2 through the pan accommodating portion 12.

An opening 12A is provided in a central portion of the bottom of the pot housing 12. The opening 12A is provided with a pot temperature sensor 5 as an example of a pot temperature detecting unit for detecting the temperature of the pot 2. The pan temperature sensor 5 is disposed so as to be able to abut against the bottom of the pan 2 accommodated in the pan accommodating portion 12. In the present embodiment, the temperature of the object to be cooked in the pan 2 is estimated based on the detected temperature of the pan temperature sensor 5.

A control unit 6 is provided in the housing 1. The control unit 6 includes a storage unit that stores a plurality of cooking sequences for cooking the object to be cooked. The term "cooking sequence" as used herein refers to a step of cooking in which the energization time, heating temperature, heating time, heating output, and the like are predetermined. Each cooking sequence corresponds to one of the plurality of cooking modes. The control unit 6 controls the driving of the heating unit 4 based on a cooking mode inputted through an input unit 7 described later, a detected temperature of the pan temperature sensor 5, and the like, thereby performing a cooking process.

The cover 3 is configured to be movable to a closed position (a position shown in fig. 1 and 2) covering the upper opening portion 1A and an open position separated from the upper opening portion 1A. In the present embodiment, the cover 3 is configured to be movable to the closed position and the open position by rotating about the hinge shaft 3A disposed above the upper wall 11 of the housing 1. The outer cover 3 has a hollow construction. The outer lid 3 is provided with a vent hole 31 penetrating the outer lid 3 in the thickness direction so as to discharge the vapor generated in the pot 2 to the outside. An input unit 7 for inputting various information is provided inside the cover 3.

The input unit 7 is provided with a display unit (not shown) such as a liquid crystal display for displaying various information such as a cooking mode and a cooking time, and a selection unit (not shown) capable of selecting a specific cooking mode from a plurality of cooking modes. The selecting unit is configured to instruct the start, cancel, reservation, etc. of cooking in addition to the selection of the cooking mode. The user can select a specific cooking mode by the selecting unit and instruct the start of cooking while referring to the display content of the display unit. In the present embodiment, the input unit 7 is a touch panel type input unit.

As shown in fig. 2, the inner lid 8 is detachably attached to the outer lid 3. The inner lid 8 is configured to cover the opening of the pan 2 in an openable and closable manner in conjunction with the opening and closing operation (turning operation) of the outer lid 3. That is, the inner lid 8 is detachably attached to the outer lid 3 on the opposite surface of the upper opening of the pot 2 accommodated in the pot accommodating portion 12. The inner lid 8 is configured to cover an upper opening portion of the pan 2 when the outer lid 3 is in the closed position. An annular gasket 81 is attached to the outer circumferential surface of the inner lid 8 on the pan 2 side. The gasket 81 is configured to closely contact the vicinity of the flange portion 21 of the pan 2 when the outer lid 3 is in the closed position, thereby sealing the gap between the pan 2 and the inner lid 8.

The cover 3 is provided with an operation portion 32 that is movable relative to the cover 3. Fig. 3A to 3D show a case where the operation portion 32 is moved relative to the outer cover 3. Fig. 4A to 4D, fig. 5A to 5D, fig. 6A to 6C, fig. 7A to 7C, and fig. 8A to 8C show respective parts and respective mechanisms that move in conjunction with the relative movement of the operation part 32 with respect to the outer cover 3.

As shown in fig. 4A to 4D, the cover 3 is provided with a cover lock portion 33, a cover lock portion moving mechanism 34, a clamp portion 35, and a clamp portion moving mechanism 36. The cover lock portion 33, the cover lock portion moving mechanism 34, the clamp portion 35, and the clamp portion moving mechanism 36 are configured to move in conjunction with the movement of the operation portion 32.

The cover locking portion 33 is configured to be movable to a locking position (a position shown in fig. 5A to 5C) for engaging with a part of the housing 1 to hold the outer cover 3 in the closed position and a locking release position (a position shown in fig. 5D) for releasing the engagement with a part of the housing 1. The cover lock portion moving mechanism 34 is configured to move the cover lock portion 33 in conjunction with the movement of the operation portion 32. Specifically, the cover lock portion moving mechanism 34 is configured to move the cover lock portion 33 from the lock position to the unlock position when the operation portion 32 moves in one direction from the position (initial position) shown in fig. 3A to the position (second position) shown in fig. 3D. In the present embodiment, as shown in fig. 4B to 4D, the operation unit 32 is configured to rotate about a rotation shaft 32A (first rotation shaft).

In the present embodiment, the cover lock portion moving mechanism 34 is constituted by a plate-like member rotatable about a rotation shaft 34A. The cover locking portion 33 is constituted by an engagement claw integrally provided at an end portion of the plate-like member distant from the rotation shaft 34A. The cover lock portion moving mechanism 34 is configured to be located at a position away from the operating portion 32 when the operating portion 32 is located at the position (initial position) shown in fig. 3A and the position shown in fig. 3B. On the other hand, the cover lock portion moving mechanism 34 is configured to be in contact with a part of the operation portion 32 when the operation portion 32 is located at the position (first position) shown in fig. 3C. The cover lock portion moving mechanism 34 is configured to be pressed by a part of the operation portion 32 and rotated about the rotation shaft 34A when the operation portion 32 moves from the position (first position) shown in fig. 3C to the position (second position) shown in fig. 3D. Thereby, the cover lock portion 33 moves from the lock position to the lock release position.

As shown in fig. 7A to 7C, the clamp portion 35 is configured to be movable to a clamp position (position shown in fig. 7A) for clamping the inner lid 8 and the flange portion 21 in the thickness direction and a clamp release position (positions shown in fig. 7B and 7C) for releasing from the inner lid 8 and the flange portion 21.

In the present embodiment, the two clamp portions 35 are provided at positions that are line-symmetrical with respect to the linear direction X1 in a plan view.

The clamp portion moving mechanism 36 is configured to move the clamp portion 35 in conjunction with the movement of the operation portion 32. Specifically, the clamp portion moving mechanism 36 is configured to move the clamp portion 35 from the clamp position to the clamp release position when the operation portion 32 moves in one direction from the position (initial position) shown in fig. 3A to the position (first position) shown in fig. 3C.

In the present embodiment, the clamp moving mechanism 36 includes a link member 361, a slide plate 362, and a clamp arm 363.

As shown in fig. 4A to 4D, the link member 361 is configured to engage with a part of the operation portion 32, and when the operation portion 32 rotates, it rotates in a direction opposite to the operation portion 32 around a rotation shaft 36A (second rotation shaft) arranged parallel to the rotation shaft 32A. In the present embodiment, the operation portion 32 is provided with engagement pins 32B and 32B so as to protrude from both side surfaces. The link member 361 has engagement holes 361A, 361A having a long hole shape into which the engagement pins 32B, 32B are engaged. When the operation portion 32 rotates, the engagement pins 32B slide in the engagement holes 361A, and the link member 361 rotates in the opposite direction to the operation portion 32 around the rotation shaft 36A.

The slide plate 362 is configured to engage with a part of the link member 361, and is pushed or pulled by the link member 361 when the link member 361 rotates, and moves forward and backward in a linear direction X1 (see fig. 4B and 4C) along the surface direction of the cover 3.

In the present embodiment, as shown in fig. 5A to 5D, an engagement shaft 361A extending parallel to the rotation shaft 36A is provided in the link member 361. The slide plate 362 has an engagement groove 362A in which the engagement shaft 361A is engaged. Since the link member 361 rotates in a state where the engagement shaft 361A is engaged with the engagement groove 362A, the link member 361 is pushed or pulled by the link member 361 to advance and retreat in the linear direction X1.

The clamp arm 363 engages with a part of the slide plate 362 and is attached to the clamp portion 35. The clamp arm 363 is configured to be pushed or pulled by the slide plate 362 to move forward and backward in a crossing direction Y1 (see fig. 4C) crossing (e.g., orthogonal or substantially orthogonal) the linear direction X1 along the surface direction of the cover 3 when the slide plate 362 moves forward and backward.

In the present embodiment, as shown in fig. 6A to 6C, a pair of cam grooves 362B, 362B is provided in the slide plate 362. The pair of cam grooves 362B, 362B are provided in line symmetry with respect to the linear direction X1. Each cam groove 362B has an inclined surface 362Ba inclined with respect to the linear direction X1 and the intersecting direction Y1. The inclined surface 362Ba of one cam groove 362B and the inclined surface 362Ba of the other cam groove 362B are inclined in a direction away from each other as approaching the operation portion 32 in a plan view.

In the present embodiment, the two clamp arms 363 are arranged in a line extending in the intersecting direction Y1. A clamp 35 is attached to an end of each clamp arm 363. Each of the clamp arms 363 has a cam pin 363A engaged with the cam groove 362B. When the slide plate 362 moves forward and backward in the linear direction X1, each cam pin 363A slides along the inclined surface 362Ba of each cam groove 362B, whereby the two clamp arms 363 move forward and backward in the intersecting direction Y1 so as to approach or separate from each other. As a result, as shown in fig. 7A to 7C, the two clamp portions 35 move between the clamp position (position shown in fig. 7A) and the clamp release position (positions shown in fig. 7B and 7C).

As shown in fig. 5A to 5D, a lock mechanism 37 that can engage with a part of the clamp moving mechanism 36 is provided between the inner lid 8 and the outer lid 3. When the pressure in the pot 2 rises above the atmospheric pressure, the inner lid 8 is pressed by the pressure and can move in a direction approaching the outer lid 3. The lock mechanism 37 is configured to engage with a part of the clamp portion moving mechanism 36 to lock the operation of the clamp portion moving mechanism 36 when the inner lid 8 moves in a direction approaching the outer lid 3. Even in this case, the gasket 81 is closely contacted with the vicinity of the flange portion 21 of the pan 2, thereby sealing the gap between the pan 2 and the inner lid 8.

In the present embodiment, the lock mechanism 37 includes a lock pin 371 and a lock lever 372. A through hole 3a penetrating in the thickness direction is provided in the bottom wall (wall facing the inner lid 8) of the outer lid 3. The lock pin 371 is configured to be movable in advance and retreat in the through hole 3a, and is configured to be capable of contacting the inner lid 8. The lock lever 372 is a substantially long plate-shaped member having one end attached to the rotation shaft 371A and provided so as to rotate about the rotation shaft 372A. The other end of the lock lever 372 has a hook shape that can engage with a part of the slide plate 362. The lock pin 371 is configured to be capable of contacting with a middle portion in the longitudinal direction of the lock lever 372. When the inner lid 8 moves in a direction approaching the outer lid 3, the lock pin 371 is pushed by the inner lid 8 and slides (lifts) in the through hole 3a, and the lock lever 372 is rotated about the rotation shaft 371A. Thereby, the other end of the lock lever 372 engages with a part of the slide plate 362, and the operation of the clamp moving mechanism 36 is locked. When the inner lid 8 is moved away from the outer lid 3, the lock pin 371 presses the inner lid 8 and slides (descends) in the through hole 3a, so that the lock lever 372 rotates about the rotation shaft 371A. Thereby, the engagement between the other end of the lock lever 372 and a part of the slide plate 362 is released, and the clamp moving mechanism 36 can be operated.

In addition, the inner lid 8 is provided with a vapor discharge hole 82 for fluidly connecting the inside of the pan 2 with the discharge hole 31 of the outer lid 3. The steam generated in the pot 2 is discharged to the outside through the steam discharge hole 82 of the inner lid 8 and the air discharge hole 31 of the outer lid 3. As shown in fig. 8A to 8C, a vent valve 83 is provided in the vicinity of the vapor vent hole 82, and the vent valve 83 is movable to a blocking position (position shown in fig. 8A) for blocking the vapor vent hole 82 and a vent position (positions shown in fig. 8B and 8C) for opening the vapor vent hole 82. The exhaust valve 83 is normally biased to be in the exhaust position by an elastic member such as a spring.

In the present embodiment, the clamp portion moving mechanism 36 is configured to move the exhaust valve 83 and the clamp portion 35 in conjunction with the movement of the operation portion 32. The clamp portion moving mechanism 36 is configured to move the clamp portion 35 from the clamp position to the clamp release position after moving the exhaust valve 83 from the blocking position to the exhaust position when the operation portion 32 moves from the position shown in fig. 3A to the position shown in fig. 3C.

More specifically, the outer lid 3 is provided with a pressing pin 38 that can slide along the lower surface (inner lid 8-side surface) of the slide plate 362 and can press the exhaust valve 83 downward. An inclined surface 362C that is inclined downward as it is away from the operation portion 32 is formed on the lower surface of the slide plate 362. When the operation portion 32 is located at the position (initial position) shown in fig. 3A, the pressing pin 38 presses the exhaust valve 83 downward as shown in fig. 8A, and holds the exhaust valve 83 at the blocking position. On the other hand, when the operation portion 32 moves from the position shown in fig. 3A to the position shown in fig. 3C, the pressing pin 38 moves up along the inclined surface 362C as shown in fig. 8B and 8C, and moves away from the exhaust valve 83. Thereby, the exhaust valve 83 moves to the exhaust position (elastic recovery) by the elastic force of the elastic member.

As shown in fig. 8A to 8C, the pressure cooker of the present embodiment includes a position detecting unit 9. The position detecting unit 9 includes a first position detecting element 91 and a second position detecting element 92. The first position detecting element 91 is attached to the clamp portion moving mechanism 36. In the present embodiment, the first position detecting element 91 is attached to the slide plate 362. The second position detecting element 92 is mounted to the outer cover 3. The position detecting unit 9 is configured to detect which of the clamping position and the clamping release position the clamping portion 35 is located in based on the relative positions of the first position detecting element 91 and the second position detecting element 92. The first position detecting element 91 is, for example, a magnet. The second position detecting element 92 is, for example, a hall element. In this case, the position detecting unit 9 converts the magnetic quantity received by the hall element from the magnet into an electric quantity, and detects which of the clamping position and the clamping release position the clamping portion 35 is located in based on the magnitude of the electric quantity.

According to the present embodiment, the clamp portion moving mechanism 36 is configured to move the clamp portion 35 from the clamp position to the clamp release position when the operation portion 32 moves in one direction from the position (initial position) shown in fig. 3A to the position (first position) shown in fig. 3C. Further, the cover lock portion moving mechanism 34 is configured to move the cover lock portion 33 from the lock position to the unlock position when the operation portion 32 is further moved in one direction from the position (first position) shown in fig. 3C to the position (second position) shown in fig. 3D. Thus, by a series of operations of moving the operation portion 32 from the position shown in fig. 3A to the position shown in fig. 3D, the cover lock portion 33 can be moved to the lock release position after the clamp portion 35 is moved to the clamp release position. Thus, the convenience of use can be improved.

Further, according to the present embodiment, the slide plate 362 and the clamp arm 363 of the clamp portion moving mechanism 36 are configured to be movable in the surface direction of the outer lid 3. Thereby, the convenience of use can be improved in a compact structure in which an increase in the thickness of the outer cover 3 is suppressed.

In addition, according to the present embodiment, when the pressure in the pan 2 is raised to be higher than the atmospheric pressure, the lock mechanism 37 locks the operation of the clamp portion moving mechanism 36. This can suppress the outer lid 3 from moving to the open position in a state where the pressure in the pan 2 is high, and can improve safety. In addition, at this time, the actions to be performed by the user are not increased, so that the convenience of use can be further improved.

Further, according to the present embodiment, the lid lock portion 33 can be moved to the unlock position after the exhaust valve 83 is moved to the exhaust position by a series of operations of moving the operation portion 32 in one direction from the position shown in fig. 3A to the position shown in fig. 3C. This can prevent the cover 3 from moving to the open position in a state where the pressure in the pan 2 has not been reduced to the atmospheric pressure or lower, for example, and can further improve safety. In addition, at this time, the actions to be performed by the user are not increased, so that the convenience of use can be further improved.

Further, according to the present embodiment, it is configured to detect which of the clamping position and the clamping release position the clamping portion 35 is located in based on the relative positions of the first position detecting element 91 and the second position detecting element 92. This can suppress, for example, a start of cooking in a state where the clamp 35 is located at the clamp release position, and can perform appropriate pressure cooking. In addition, at this time, the actions to be performed by the user are not increased, so that the convenience of use can be further improved.

According to a first aspect of the present invention, there is provided a pressure cooker, wherein,

the pressure cooker is provided with:

a housing provided with an upper opening portion;

a pan having a flange portion and accommodated in the housing through the upper opening portion;

an outer cover movable to a closed position covering the upper opening portion and an open position separated from the upper opening portion;

an inner lid detachably attached to the outer lid and adapted to cover an opening of the pot in an openable and closable manner in conjunction with an opening/closing operation of the outer lid;

a clamp portion movable to a clamp position for clamping the inner lid and the flange portion in a thickness direction and a clamp release position away from the inner lid and the flange portion;

a cover locking portion movable to a locking position for engaging with a part of the housing to hold the outer cover in the closed position and an unlocking position for unlocking from the engagement with the part of the housing;

an operation unit which is provided in the cover and is capable of relative movement with respect to the cover;

a clamp portion moving mechanism that moves the clamp portion in conjunction with movement of the operation portion; and

a cover lock part moving mechanism for moving the cover lock part in conjunction with the movement of the operation part,

the clamping portion moving mechanism moves the clamping portion from the clamping position to the clamping releasing position when the operating portion moves in one direction from an initial position to a first position,

the cover lock portion moving mechanism moves the cover lock portion from the lock position to the lock release position when the operating portion is further moved from the first position to the second position in the one direction.

According to a second aspect of the present invention, there is provided the pressure cooker as described in the first aspect, wherein,

the operating part is configured to rotate around a first rotation axis,

the clamp portion moving mechanism includes:

a link member configured to engage with a part of the operation unit, and to rotate in a direction opposite to the operation unit about a second rotation axis disposed parallel to the first rotation axis when the operation unit rotates;

a slide plate configured to engage with a part of the link member, and to be pushed or pulled by the link member to advance and retreat in a linear direction along a surface direction of the outer cover when the link member rotates; and

and a clamp arm which is engaged with a part of the slide plate and is attached to the clamp portion, and which is pushed or pulled by the slide plate to advance and retract in a crossing direction crossing the linear direction along the surface direction of the outer cover when the slide plate advances and retreats.

According to a third aspect of the present invention, there is provided the pressure cooker as described in the first or second aspect, wherein,

the pressure cooker further comprises a locking mechanism which is provided between the inner lid and the outer lid and can engage with a part of the clamp portion moving mechanism,

the inner cover is configured to be capable of moving in a direction approaching the outer cover by being pressed by the pressure when the pressure in the pot rises to be higher than the atmospheric pressure,

the locking mechanism is engaged with a part of the clamping portion moving mechanism to lock the movement of the clamping portion moving mechanism when the inner lid moves in a direction approaching the outer lid.

According to a fourth aspect of the present invention, there is provided the pressure cooker according to any one of the first to third aspects, wherein,

the pressure cooker further comprises an exhaust valve which can move to a blocking position for blocking the steam exhaust hole arranged on the inner cover and an exhaust position for opening the steam exhaust hole,

the clamp portion moving mechanism is configured to move the exhaust valve and the clamp portion in conjunction with movement of the operating portion, and to move the clamp portion from the clamp position to the clamp release position after moving the exhaust valve from the blocking position to the exhaust position when the operating portion moves in one direction from an initial position to a first position.

According to a fifth aspect of the present invention, there is provided the pressure cooker according to any one of the first to fourth aspects, further comprising a position detecting unit including a first position detecting element attached to the clamp moving mechanism and a second position detecting element attached to the outer cover, wherein the position detecting unit detects whether the clamp is located at any one of the clamp position and the clamp releasing position based on a relative position between the first position detecting element and the second position detecting element.

The effects of any of the above-described various embodiments can be achieved by appropriately combining them.

The present invention has been fully described in connection with the preferred embodiments with reference to the accompanying drawings, but various changes and modifications will be apparent to those skilled in the art. Such variations and modifications are to be understood to be included within the scope of the present invention without departing from the accompanying claims.

Industrial applicability

The pressure cooker of the present invention can improve the convenience of use, and is therefore useful, for example, as a pressure cooker.

Claims (5)

1. A pressure cooker, wherein,

the pressure cooker is provided with:

a housing provided with an upper opening portion;

a pan having a flange portion and accommodated in the housing through the upper opening portion;

an outer cover movable to a closed position covering the upper opening portion and an open position separated from the upper opening portion;

an inner lid detachably attached to the outer lid and adapted to cover an opening of the pot in an openable and closable manner in conjunction with an opening/closing operation of the outer lid;

a clamp portion movable to a clamp position for clamping the inner lid and the flange portion in a thickness direction and a clamp release position away from the inner lid and the flange portion;

a cover locking portion movable to a locking position for engaging with a part of the housing to hold the outer cover in the closed position and an unlocking position for unlocking from the engagement with the part of the housing;

an operation unit which is provided in the cover and is capable of relative movement with respect to the cover;

a clamp portion moving mechanism that moves the clamp portion in conjunction with movement of the operation portion; and

a cover lock part moving mechanism for moving the cover lock part in conjunction with the movement of the operation part,

the clamping portion moving mechanism moves the clamping portion from the clamping position to the clamping releasing position when the operating portion moves in one direction from an initial position to a first position,

the cover lock portion moving mechanism moves the cover lock portion from the lock position to the lock release position when the operating portion is further moved from the first position to the second position in the one direction.

2. The pressure cooker of claim 1 wherein,

the operating part is configured to rotate around a first rotation axis,

the clamp portion moving mechanism includes:

a link member configured to engage with a part of the operation unit, and to rotate in a direction opposite to the operation unit about a second rotation axis disposed parallel to the first rotation axis when the operation unit rotates;

a slide plate configured to engage with a part of the link member, and to be pushed or pulled by the link member to advance and retreat in a linear direction along a surface direction of the outer cover when the link member rotates; and

and a clamp arm which is engaged with a part of the slide plate and is attached to the clamp portion, and which is pushed or pulled by the slide plate to advance and retract in a crossing direction crossing the linear direction along the surface direction of the outer cover when the slide plate advances and retreats.

3. The pressure cooker according to claim 1 or 2, wherein,

the pressure cooker further includes a locking mechanism provided between the inner lid and the outer lid and engageable with a part of the clamp moving mechanism,

the inner cover is configured to be capable of moving in a direction approaching the outer cover by being pressed by the pressure when the pressure in the pot rises to be higher than the atmospheric pressure,

the locking mechanism is engaged with a part of the clamping portion moving mechanism to lock the movement of the clamping portion moving mechanism when the inner lid moves in a direction approaching the outer lid.

4. The pressure cooker according to claim 1 or 2, wherein,

the pressure cooker further comprises an exhaust valve which can move to a blocking position for blocking the steam exhaust hole arranged on the inner cover and an exhaust position for opening the steam exhaust hole,

the clamp portion moving mechanism is configured to move the exhaust valve and the clamp portion in conjunction with movement of the operating portion, and to move the clamp portion from the clamp position to the clamp release position after moving the exhaust valve from the blocking position to the exhaust position when the operating portion moves in one direction from an initial position to a first position.

5. The pressure cooker according to claim 1 or 2, wherein,

the pressure cooker further includes a position detection unit that includes a first position detection element attached to the clamp unit moving mechanism and a second position detection element attached to the outer lid, and detects which of the clamp position and the clamp release position the clamp unit is located based on a relative position of the first position detection element and the second position detection element.