CN115067741A

CN115067741A - Pressure cooker and cover body assembly thereof

Info

Publication number: CN115067741A
Application number: CN202210540595.4A
Authority: CN
Inventors: 黄中锋; 肖勇; 李福惠; 张冒军
Original assignee: Hangzhou Yongyao Technology Co ltd
Current assignee: Hangzhou Yongyao Technology Co ltd
Priority date: 2022-05-07
Filing date: 2022-05-17
Publication date: 2022-09-20
Also published as: CN218128068U

Abstract

The invention discloses a cover body assembly of a pressure cooker, which comprises a cooker cover, a weight type pressure limiting valve and a pressure adjusting device, wherein the pressure limiting valve comprises a steam exhaust pipe with a steam outlet and a valve body capable of separably plugging the steam outlet; the pressure adjusting device comprises a push button, a switching mechanism and a touch piece, wherein the push button is arranged to be operatively connected to the pot cover; the touch piece is arranged to push the valve body to move upwards to leave the steam outlet; the switching mechanism is used for associating the push button with the touch piece and switching the thrust of the push button into the upward movement of the touch piece; the conversion mechanism comprises a connecting rod assembly and a rotating piece capable of rotating around a fixed axis, the rotating piece is coupled with the push button through the connecting rod assembly and driven by the pushing force of the push button to rotate, and the rotating piece and the touch piece are matched through a cam structure to convert the rotating motion of the rotating piece into the upward movement of the touch piece. The invention has the advantages of simple structure and convenient operation.

Description

Pressure cooker and cover body assembly thereof

Technical Field

The invention relates to the field of kitchen appliances, in particular to a pressure cooker and a cover body assembly thereof.

Background

The pressure cooker can cook food under a certain pressure environment by maintaining a certain pressure in the cooker, so that the cooking speed can be increased, and the cooking thermal efficiency can be improved; in order to ensure the safety of users, the pot cover can be opened only after the pressure in the pot is completely released. The conventional electric pressure cooker generally adopts a mode of releasing the pressure in the cooker, namely waiting for the pressure cooker to naturally cool down so as to reduce the pressure in the cooker; or the steam is discharged through the steam discharge pipe, so that the pressure in the cooker is reduced to be the same as the pressure outside the cooker, and a user can conveniently and safely open the cooker cover.

The steam exhaust through the steam exhaust pipe mainly comprises the following implementation scheme: set up protruding muscle in the periphery of weight seat, set up the hypotenuse structure in the bottom of weight, promote the weight through manual or solenoid valve and rotate for the hypotenuse moves along protruding muscle, thereby with weight jack-up, realize the exhaust pipe steam extraction.

In the process of realizing and using the electric pressure cooker, the inventor finds that at least the following problems exist in the prior art: when the heavy hammer is pushed manually, the hand of a user is close to the steam exhaust position, so that the user is easily scalded; the weight hammer is pushed by the electromagnetic valve, and the electromagnetic valve and a corresponding control circuit are required to be added, so that the cost is high.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a pressure cooker which can quickly release pressure and exhaust steam, is convenient to operate and cannot cause scald to a user and a cover body assembly thereof.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a cover body assembly of a pressure cooker comprises a cooker cover, a weight type pressure limiting valve and a pressure adjusting device, wherein the pressure limiting valve comprises a steam exhaust pipe with a steam outlet and a valve body capable of separably plugging the steam outlet; the pressure adjusting device includes:

a push button configured to be operatively engaged to the lid; the touch piece is arranged to push the valve body to move upwards to leave the steam outlet; and a conversion mechanism that associates the push button and the trip member and converts a pushing force of the push button into an upward movement of the trip member;

the switching mechanism comprises a connecting rod assembly and a rotating piece capable of rotating around a fixed axis, the rotating piece is coupled with the push button through the connecting rod assembly and driven by the thrust of the push button to rotate, and the rotating piece is matched with the touch piece through a cam structure so as to switch the rotating motion of the rotating piece into the upward movement of the touch piece.

The technical scheme can be further perfected as follows:

preferably, the cam structure includes: an upper cam portion formed on the top of the rotating member; and the lower cam part is formed at the bottom of the touch piece, and the upper cam part is matched with the lower cam part.

Preferably, a limit structure is arranged between the touch part and the pot cover, and the limit structure is arranged to allow the touch part to move up and down to limit the touch part to rotate along with the rotating component. The limiting structure comprises a limiting groove and a limiting column inserted into the limiting groove, one of the limiting groove and the limiting column is arranged on the pot cover, and the other one of the limiting groove and the limiting column is arranged on the touch piece.

Preferably, the connecting rod assembly includes: the first connecting rod is driven by the push button to move along a set path; the second connecting rod rotates along a set axis; and a third link for connecting the rotating member and the second link; the first connecting rod, the second connecting rod and the third connecting rod are sequentially and movably connected; the push button is abutted against the first connecting rod to drive the first connecting rod to move; the rotating part is provided with a first extending part extending towards one side of the third connecting rod, and the third connecting rod is movably connected with the first extending part so as to drive the rotating part to rotate. The second link has: a first pivot part pivotally connected to the first link; a second pivoting part which is pivoted with the pot cover; and a third pivot part pivotally connected to the third link; the first connecting rod is provided with a waist-shaped hole matched with the first pivoting part, and the first pivoting part is embedded into the waist-shaped hole and can rotate and slide in the waist-shaped hole; a waist-shaped hole matched with the third pivoting part is formed in the third connecting rod, and the third pivoting part is embedded into the waist-shaped hole and can rotate and slide in the waist-shaped hole; the third connecting rod is also provided with another waist-shaped hole matched with the first extending part, and the first extending part is embedded into the waist-shaped hole and can rotate in the waist-shaped hole and slide at the same time.

Preferably, the pot cover has a holding portion for holding operation of a user, and the push button is disposed on the holding portion. The rotating member is arranged to rotate along a central axis of the exhaust pipe. The top of the touch piece is provided with a jacking part which is abutted against the bottom of the valve body.

The invention also provides a pressure cooker, which comprises a cover body component and a cooker body component, wherein the cooker body component is provided with cooker teeth for buckling and connecting the cover body component, and the cover body component is provided with a float valve and an interlocking device triggered by the cooker teeth; the cover body assembly is the cover body assembly.

As an embodiment, the interlocking device comprises a locking plate and a pressing part for abutting against the pot teeth, and when the cover body assembly is rotated to open and close the cover, the pressing part moves along the pot teeth to drive the locking plate to move on the pot cover in a reciprocating manner.

As an implementation mode, it establishes the portion to extend towards the second that locking plate one side extends to be provided with on the rotation piece, be provided with on the locking plate with the second prolongs the portion of stirring of establishing the portion adaptation, stir the portion and set up to, can stir when the locking plate removes along the prescribed direction the rotation piece rotates so that the valve body whereabouts is with the shutoff steam outlet.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

1. the sliding push button is adopted to exhaust and release pressure of the pressure cooker, and the valve body of the heavy hammer type pressure limiting valve can be jacked up only by sliding the push button to a pressure release position, so that the valve body is separated from the steam outlet of the steam exhaust pipe, and the operation is convenient. Meanwhile, the push button can be released when the steam is exhausted, the steam can be continuously exhausted without pressing the push button all the time, and safety and labor saving are realized.

2. After the steam exhaust is finished, the rotating pot cover can stir the rotating piece to rotate by utilizing the movement of the locking piece, so that the valve body is reset, and the rotating pot cover is plugged on the steam outlet of the steam exhaust pipe again.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description only relate to some embodiments of the present invention and are not limiting on the present invention.

Fig. 1 is a schematic structural diagram of a cover assembly according to an embodiment.

Fig. 2 is an exploded view of fig. 1.

FIG. 3 is a first view of an assembly of a pressure adjustment device and a cover assembly according to an embodiment.

Fig. 4 is a second assembly view of the pressure adjustment device and the cover assembly in the first embodiment.

Fig. 5 is a third assembly view of the pressure adjustment device and the cover assembly according to the first embodiment.

Fig. 6 is an exploded view of an assembled structure of a pressure adjustment device and a cover assembly according to an embodiment.

FIG. 7 is a structural view of a trip unit in accordance with an embodiment.

FIG. 8 is a structural view of a rotating member according to an embodiment.

Reference numerals are as follows:

1. a pot cover; 101. a grip portion; 102. a top cover; 103. a metal cover; 104. a lower cover; 105. a guide post; 2. a weight type pressure limiting valve; 201. a valve body; 202. a steam exhaust pipe; 3. a pressure regulating device; 301. a push button; 302. a first link; 303. a second link; 304. a third link; 305. a rotating member; 305a, an upper cam portion, 305b, a first extension portion; 305c, a second extending part; 306. a touch piece; 306a, a lower cam portion; 306b. a top press; 4. an interlock device; 401. a locking plate; 402. an abutting portion; 403. a spring; 5. a float valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of this patent does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are used only to indicate relative positional relationships that may change when the absolute position of an object being described is changed, and are merely for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

The first embodiment is as follows:

referring to fig. 1-7, a cover assembly of a pressure cooker comprises a cover 1, a weight type pressure limiting valve 2 and a pressure adjusting device 3, wherein the pressure limiting valve comprises a steam exhaust pipe 202 having a steam outlet and a valve body 201 for detachably blocking the steam outlet; as shown in fig. 1 and 2, the pot lid 1 includes a top cover 102, a lower cover 104, a metal cover 103, and a holding portion 101 fixed to the top cover 102, and the holding portion 101 is also referred to as a handle. The top cover 102 and the lower cover 104 are fixedly connected, the top cover 102 is positioned above the lower cover 104, the metal cover 103 is positioned between the top cover 102 and the lower cover 104, and the metal cover 103 has cover teeth formed by bending inward. Corresponding to the cover teeth, the pot body assembly of the pressure cooker is provided with the pot teeth, the cover teeth are buckled with the pot teeth to realize the connection of the cover body assembly and the pot body assembly, and a user operates the holding part 101 to enable the cover body assembly to rotate so as to enable the cover body assembly and the pot body assembly to be buckled and separated.

As shown in fig. 5 and 6, the steam exhaust pipe 202 is a vertically arranged metal circular pipe, and a steam exhaust channel communicated with the cooking cavity in the pot liner is formed in the middle of the steam exhaust pipe. Exhaust pipe 202 passes through the nut locking on metal covering 103, has a toper portion in the valve body 201, and toper portion and play steam port cooperation realize the sealed between the two, and further, valve body 201 relies on its self gravity shutoff steam port, and valve body 201 rebound can break away from the steam port in order to carry out the steam extraction pressure release. In the pressure relief process, the pressure in the cooker liner is gradually reduced.

As shown in fig. 1 to 3, the pressure adjusting device 3 in this example includes a push button, a trip 306, and a switching mechanism. The push button 301 is configured to be operatively coupled to the pot lid 1, specifically, the push button 301 is slidably coupled to the holding portion 101, an area for the push button 301 to slide is provided on the holding portion 101, in the area, the holding portion 101 has a sliding slot for the push button 301 to slide back and forth, a part of the push button 301 is embedded in the sliding slot, and the push button 301 is supported by the holding portion 101, the push button 301 is exposed to the holding portion 101 for user operation, and the user operation means that a user applies a pushing force to the push button 301 with a finger.

As shown in fig. 6 and 7, the trip member 306 in this example is configured to push the valve body 201 to move upward to be away from the steam outlet. Specifically, the trigger 306 has a pressing portion 306b that presses against a lower portion of the valve body 201. In this embodiment, the pressing portions 306b are columns integrally formed on the touch member 306, and two or more pressing portions 306b are uniformly distributed on the top surface of the touch member 306. The up-and-down movement of the touch piece 306 can press the valve body 201 to push the valve body 201 to move upwards to leave the steam outlet, and after the valve body 201 leaves the steam outlet, steam in the cooker liner is discharged from the steam outlet, so that the pressure in the cooker liner is reduced.

As shown in fig. 3 to 8, the conversion mechanism in this example associates the push button 301 with the trip member 306, and converts the pushing force of the push button 301 into the upward movement of the trip member 306; specifically, the push button 301 is connected to the contact member 306 through a conversion mechanism, and when a thrust force is operationally applied to the push button 301, the push button 301 moves to the left side as shown in fig. 1, and the thrust force is further converted into a motion of the conversion mechanism, and the conversion mechanism converts the thrust force into a lift force that pushes the contact member to move upward.

In an embodiment, the conversion mechanism includes a linkage assembly and a rotating member 305 capable of rotating around a fixed axis, specifically, the axis is the central axis of the exhaust pipe 202, the rotating member 305 is coupled to the push button 301 via the linkage assembly and is driven by the pushing force of the push button 301 to rotate, and the rotating member 305 and the triggering member 306 are engaged through a cam structure to convert the rotating motion of the rotating member 305 into the upward movement of the triggering member 306.

Specifically, the cam structure includes an upper cam portion 305a formed on the top of the rotating member 305, and a lower cam portion 306a formed on the bottom of the feeler 306, the upper cam portion 305a and the lower cam portion 306a being fitted. Wherein, the upper cam portion 305a is a cam configuration of an undulation formed on the top of the rotation piece 305, and the upper cam portion 305a can cooperate with the lower cam portion 306a to push the trigger 306 to move up and down reciprocally during the rotation. The lower cam portion 306a may be an undulating cam configuration that is horizontally symmetrical with the lower cam portion 306a, or may simply be two or more bosses extending downwardly from the trip 306 that abut against the lower cam portion 306a, in cooperation with the upper cam portion 305a. The present embodiment adopts the aforementioned first structure.

In order to prevent the trip 306 from following the rotation of the rotation member 305 during the up and down movement, thereby affecting the up and down stroke thereof. A limiting structure (not shown) is arranged between the trigger 306 and the pot cover 1, and the limiting structure is configured to allow the trigger 306 to move up and down and limit the trigger to rotate along with the rotating member. The limiting structure comprises a limiting groove and a limiting column inserted into the limiting groove, one of the limiting groove and the limiting column is arranged on the pot cover 1, and the other one of the limiting groove and the limiting column is arranged on the touch piece 306. The two limiting columns in this embodiment are integrally formed on the touching member 306, and specifically, two limiting columns are symmetrically arranged and extend upward in the radial direction from the circumferential side surface of the touching member 306. The stopper groove is formed on the lower cover 104 and is vertically disposed. The limiting column is inserted into the limiting groove and can only move up and down in the limiting groove without generating rotary motion. In another embodiment, no limiting structure may be provided, and the rotation of the trip member 306 may also be limited by the gravity of the valve body 201 on the trip member 306.

As shown in fig. 3-6, the connecting rod assembly includes: a first link 302 driven by the push button 301 to move along a set path; a second link 303 rotating along a set axis; and a third link 304 for connecting the rotation member 305 and the second link 303; the first connecting rod 302, the second connecting rod 303 and the third connecting rod 304 are sequentially and movably connected; the push button 301 abuts against the first connecting rod 302 to drive the first connecting rod 302 to move; the rotating member 305 has a first extending portion 305b extending toward one side of the third connecting rod 304, and the third connecting rod 304 is movably connected to the first extending portion 305b to drive the rotating member 305 to rotate. The second link 303 has a first pivot, a second pivot and a third pivot. A first pivot portion pivotally connected to the first link 302; a second pivoting part which is pivoted with the pot cover 1; and a third pivot portion pivotally connected to the third link 304; a waist-shaped hole matched with the first pivoting part is formed in the first connecting rod 302, and the first pivoting part is embedded into the waist-shaped hole and can rotate and slide in the waist-shaped hole; a waist-shaped hole matched with the third pivot part is formed in the third connecting rod 304, and the third pivot part is embedded into the waist-shaped hole and can slide while rotating in the waist-shaped hole so as to prevent clamping stagnation; the third link 304 further has another waist-shaped hole adapted to the first extending portion 305b, and the first extending portion 305b is inserted into the waist-shaped hole and can slide while rotating in the waist-shaped hole to prevent jamming. The first extending portion 305b is formed with a protruding portion that can be inserted into the waist-shaped hole. The first extending portion 305b extends in the radial direction of the rotor 305.

Specifically, two hooks symmetrically arranged are arranged on the push button 301, a clamping portion matched with the hooks is arranged on the first connecting rod 302, and the hooks and the clamping portion can be clamped by pressing the push button 301 from the upper side so as to clamp and connect the push button 301 and the first connecting rod 302. In order to position the first connecting rod 302, the guiding column 105 is fixed on the metal cover 103, and the first connecting rod 302 is provided with a sliding groove matched with the guiding column 105. In addition, in order to provide a guide for the moving first link 302, a guide groove adapted to the edge of the first link 302 is further provided on the upper cover. The guide grooves are two and are respectively provided along opposite sides of the first link 302. The first link 302 is provided to be able to translate only on the metal cover 103 without rotating, and the first link 302 and the push button 301 move in the same direction.

The middle of the second link 303 has a second pivot portion, which is a pivot shaft formed on the second link 303 and pivotally connected to the upper cover. One end of the second link 303 has a first pivot portion pivotally connected to the first link 302, and the first pivot portion is also a pivot shaft inserted into a waist-shaped hole formed in the end of the first link 302. The other end of the second link 303 has a second pivot portion pivotally connected to the third link 304, and the second pivot portion is also a pivot shaft inserted into a waist-shaped hole formed in the end of the third link 304. Both end portions of the third link 304 are kidney-shaped holes. The above structure can prevent the jamming while transmitting the motion, so that the push button 301 can be smoothly pushed.

It should be noted that the above-mentioned conversion mechanism can be replaced by other link structures, such as adding links or subtracting links, and also can be replaced by other conversion mechanisms, such as a rack and pinion mechanism. In fact, any structure that can convert the movement of the push button 301 into the rotation of the rotation member 305 can be applied to the present invention, and is not limited to the above-described link structure.

It should be noted that the pot cover 1 has a holding portion 101 for a user to hold and operate, and the push button 301 is disposed on the holding portion 101. The rotation member 305 is provided so as to rotate along the central axis of the exhaust pipe 202.

The working process of the embodiment is as follows:

when the user pushes the push button 301 on the grip 101, the push button 301 moves to the left (as shown in fig. 1), and the push button 301 and the first link 302 are fixedly connected in an engaged manner, so that the push button 301 drives the first link 302 to move to the left. Since the first link 302 and the second link 303 are pivoted, the second link 303 is driven by the first link 302 to rotate around the central axis of the second pivoted portion, so as to push the third link 304 to move to the right, and the rotating member 305 is simultaneously driven to rotate around the central axis of the exhaust steam during the movement of the third link 304. Because the rotating part 305 and the touch part 306 are matched in a cam structure, the rotating part 305 can drive the touch part 306 to move upwards, so that the valve body 201 is pushed to leave the steam outlet, and steam exhaust and pressure relief are realized. After the steam exhaust is finished, the reset of the weight type pressure limiting valve 2 can be realized by reversely pushing the push button 301, so that the valve body 201 blocks the steam outlet again.

Example two:

the embodiment provides a pressure cooker, which comprises a cover body assembly and a cooker body assembly, wherein the cooker body assembly is provided with cooker teeth for buckling and connecting the cover body assembly, and the cover body assembly is provided with a float valve 5 and an interlocking device 4 triggered by the cooker teeth; the cover body assembly is the cover body assembly. The cover body assembly is provided with a cover tooth formed by bending, and the cover tooth is buckled with the pot tooth. The specific structure can refer to the structure shown in Chinese patent CN 1111976A.

The interlocking device 4 comprises a locking piece 401, an abutting part 402 for abutting against the pot teeth and a return spring 403, wherein the spring 402 is sleeved on the abutting part 403. When the cover body assembly is rotated to open and close the cover, the abutting part 402 moves along the pot teeth to drive the locking piece 401 to move on the pot cover 1 in a reciprocating manner. The interlocking device 4 can refer to the interlocking structure of the cooker cover 1 and the cooker body in Chinese patents CN212912783U and CN 207444786U.

As shown in fig. 4 and 8, the rotating member 305 is provided with a second extending portion 305c extending towards one side of the locking plate 401, the locking plate 401 is provided with a toggle portion adapted to the second extending portion 305c, and the toggle portion is configured to toggle the rotating member 305 to rotate so that the valve body 201 falls to block the steam outlet when the locking plate 401 moves along a specified direction. The second extension 305c is formed by extending the circumference of the rotation member 305 in the radial direction, and has a protrusion for pushing the dial part.

In this embodiment, the rotating cover assembly can drive the rotating member 305 to rotate, so as to reset the weight type pressure limiting valve 2, and the operation is convenient.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A cover body assembly of a pressure cooker comprises a cooker cover, a weight type pressure limiting valve and a pressure adjusting device, wherein the pressure limiting valve comprises a steam exhaust pipe with a steam outlet and a valve body capable of separably plugging the steam outlet; characterized in that the pressure regulating device comprises:

a push button configured to be operatively engaged to the lid;

the touch piece is arranged to push the valve body to move upwards to leave the steam outlet; and

a conversion mechanism that associates the push button and the trip member and converts a pushing force of the push button into an upward movement of the trip member;

2. The cover assembly of a pressure cooker as recited in claim 1, wherein said cam structure comprises:

an upper cam portion formed on the top of the rotating member; and

the lower cam portion that forms in the trigger bottom, upper cam portion and lower cam portion are the looks adaptation.

3. A lid assembly for a pressure cooker as claimed in claim 1 or claim 2, wherein a stop structure is provided between the movable trigger and the lid, the stop structure being arranged to allow the movable trigger to move up and down to limit rotation of the movable trigger with the rotatable member.

4. The cover assembly of the pressure cooker as claimed in claim 3, wherein the limiting structure comprises a limiting groove and a limiting post inserted into the limiting groove, one of the limiting groove and the limiting post is disposed on the cooker cover, and the other is disposed on the triggering member.

5. Cover assembly for a pressure cooker according to claim 1, characterized in that said connecting-rod assembly comprises:

the first connecting rod is driven by the push button to move along a set path;

the second connecting rod rotates along a set axis; and

a third link for connecting the rotating member and the second link;

the first connecting rod, the second connecting rod and the third connecting rod are sequentially and movably connected;

the push button is abutted against the first connecting rod to drive the first connecting rod to move;

the rotating part is provided with a first extending part extending towards one side of the third connecting rod, and the third connecting rod is movably connected with the first extending part so as to drive the rotating part to rotate.

6. The cover assembly of the pressure cooker as set forth in claim 5, wherein the second link has:

a first pivot part pivotally connected to the first link;

a second pivoting part which is pivoted with the pot cover; and

a third pivot portion pivotally connected to the third link;

the first connecting rod is provided with a waist-shaped hole matched with the first pivoting part, and the first pivoting part is embedded into the waist-shaped hole and can rotate and slide in the waist-shaped hole;

a waist-shaped hole matched with the third pivoting part is formed in the third connecting rod, and the third pivoting part is embedded into the waist-shaped hole and can rotate in the waist-shaped hole and slide at the same time;

the third connecting rod is also provided with another waist-shaped hole matched with the first extending part, and the first extending part is embedded into the waist-shaped hole and can rotate in the waist-shaped hole and slide at the same time.

7. The lid assembly of the pressure cooker as claimed in claim 1, wherein the lid has a holding portion for holding operation by a user, and the push button is disposed on the holding portion.

8. Cover assembly for a pressure cooker according to claim 1, wherein the rotation element is arranged to rotate along a central axis of the exhaust pipe.

9. The cover assembly of the pressure cooker as claimed in claim 1, wherein the top of the trigger has a pressing portion, and the pressing portion abuts against the bottom of the valve body.

10. A pressure cooker comprises a cover body assembly and a cooker body assembly, wherein the cooker body assembly is provided with cooker teeth used for being buckled and connected with the cover body assembly, and the cover body assembly is provided with a float valve and an interlocking device triggered by the cooker teeth; characterised in that the cover assembly is as claimed in any one of claims 1 to 9.

11. The pressure cooker as claimed in claim 10, wherein the interlocking means comprises a locking piece and a pressing portion for abutting against the teeth, and the pressing portion moves along the teeth to drive the locking piece to move reciprocally on the lid when the lid assembly is rotated to open and close the lid.

12. The pressure cooker according to claim 11, wherein the rotating member is provided with a second extending portion extending toward a side of the locking plate, and the locking plate is provided with a stirring portion adapted to the second extending portion, and the stirring portion is configured to stir the rotating member to rotate when the locking plate moves in a predetermined direction, so that the valve body falls to block the steam outlet.