Electric pressure cooker

Abstract

The present invention provides an electric pressure cooker. The electric pressure cooker includes a pot body and a pot lid. The pot body is used for containing the food to be cooked, and a heating device is arranged inside the pot body. The pot lid includes a lid body, a lid locking mechanism and a swing rod. The lid body is rotatably arranged on the pot body. The lid locking mechanism is rotatably arranged below the lid body, and the swing rod is drivingly connected to the lid locking mechanism. The pot lid further includes a lid-opening prevention rod, a lid-opening prevention sliding rod and a lid-opening mechanism. The lid-opening prevention sliding rod is movably arranged on the lid body and connected to the swing rod. The lid-opening mechanism is arranged between the lid body and the pot body, and the lid-opening mechanism has a locked state in which the pot lid is locked on the pot body and an unlocked state in which the pot lid is released to allow the pot lid to be opened relative to the pot body. A linkage sliding rod mechanism is further arranged on the lid body, and the linkage sliding rod mechanism is connected to the lid-opening prevention sliding rod. By adopting the technical solution of the present invention, when the pressure inside the pot is relatively high, double prevention of opening is achieved, the safety performance of the electric pressure cooker is improved, and the use safety of the user is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of small household appliances, and more particularly, to an electric pressure cooker. Background Art

[0002] During the cooking process of an electric pressure cooker, a relatively large pressure will be generated inside the pot, which can quickly cook foods that are difficult to cook. However, the anti-opening performance of existing electric pressure cookers is relatively poor. During the cooking process, there is a possibility that the user may make a misoperation and open the lid dangerously, resulting in a relatively low safety performance of the electric pressure cooker. Summary of the Invention

[0003] The main object of the present invention is to provide an electric pressure cooker to solve the problem of relatively low safety performance of electric pressure cookers in the prior art.

[0004] To achieve the above object, the present invention provides an electric pressure cooker, including: a pot body for holding the ingredients to be cooked, and a heating device is provided inside the pot body; a pot lid, including a lid body, a locking lid, and a swing rod, the lid body is rotatably provided on the pot body, the locking lid is rotatably provided below the lid body, and the swing rod is drivingly connected to the locking lid; the pot lid further includes: a lid-opening prevention rod, which is vertically movably provided on the lid body, and the lid-opening prevention rod moves upward when the pressure inside the pot body is greater than a predetermined value; a lid-opening prevention sliding rod, which is movably provided on the lid body and is connected to the swing rod. When the pressure inside the pot body is less than the predetermined value, the lid-opening prevention sliding rod can move along a predetermined trajectory with the swing rod. When the pressure inside the pot body is greater than the predetermined value, the lid-opening prevention rod cooperates with the lid-opening prevention sliding rod to prevent the lid-opening prevention sliding rod from moving; an opening mechanism is provided between the lid body and the pot body, and the opening mechanism has a locked state of locking the pot lid on the pot body and an unlocked state of releasing the pot lid to allow the pot lid to be opened relative to the pot body; a linkage sliding rod mechanism is further provided on the lid body, and the linkage sliding rod mechanism is connected to the lid-opening prevention sliding rod. When the swing rod drives the locking lid to move, the lid-opening prevention sliding rod drives the linkage sliding rod mechanism to move, and the linkage sliding rod mechanism cooperates with the opening mechanism to limit the opening mechanism in the locked state.

[0005] Further, a convex column is provided on the linkage sliding rod mechanism or the lid-opening prevention sliding rod, and a jack adapted to the convex column is provided on the lid-opening prevention sliding rod or the linkage sliding rod mechanism, and the convex column is connected to the jack in a mating manner.

[0006] Further, the jack is a long hole, and the convex column abuts against both ends of the long hole to drive the linkage sliding rod mechanism to move. When the swing rod drives the locking lid to move, the convex column first passes through the idle stroke in the long hole and then abuts against both ends of the long hole in a mating manner.

[0007] Further, the convex column is provided on the linkage sliding rod mechanism, and the jack is provided on the lid-opening prevention sliding rod.

[0008] Further, the pot body is provided with pot teeth, and the lock cover is provided with cover teeth that cooperate with the pot teeth. The lock cover has a locking position where the cover teeth are in contact and cooperate with the pot teeth, and an unlocking position where the cover teeth are separated from the pot teeth. The swing rod drives the lock cover to move between the locking position and the unlocking position. The linkage slider mechanism is connected to the anti-opening slider. When the swing rod drives the lock cover to move to the locking position, the anti-opening slider drives the linkage slider mechanism to move, and the linkage slider mechanism is in contact and cooperation with the opening mechanism, restricting the opening mechanism in the locked state. When the swing rod drives the lock cover to move to the unlocking position, the anti-opening slider drives the linkage slider mechanism to move, and the linkage slider mechanism is separated from the opening mechanism, and the opening mechanism can be operated to the unlocked state.

[0009] Further, the linkage slider mechanism includes: a linkage slider, which is drivingly connected to the anti-opening slider and is movably arranged on the cover body in the horizontal direction; a plug rod, which is drivingly connected to the linkage slider and is movably arranged on the cover body in the vertical direction. When the swing rod drives the lock cover to move to the locking position, the anti-opening slider drives the linkage slider to move horizontally, and the linkage slider drives the plug rod to move vertically. The plug rod is in contact and cooperation with the opening mechanism, restricting the opening mechanism in the locked state.

[0010] Further, the linkage slider is provided with a ramp structure, and the ramp structure cooperates with the plug rod to press down the plug rod to be in contact with the opening mechanism.

[0011] Further, the linkage slider mechanism further includes a reset mechanism, and the reset mechanism is installed on the plug rod. When the swing rod drives the lock cover to move to the unlocking position, the reset mechanism drives the plug rod to be separated from the opening mechanism.

[0012] Further, the linkage slider includes a first connecting rod that cooperates with the anti-opening slider, and a second connecting rod that cooperates with the plug rod. The first connecting rod and the second connecting rod are connected by a bent rod.

[0013] Further, the first connecting rod and the second connecting rod are parallel to each other.

[0014] When applying the technical solution of the present invention and needing to use an electric pressure cooker for cooking, first close the pot lid, and then operate the swing rod to drive the locking lid to engage with the pot body. While the swing rod drives the locking lid to move, the swing rod also drives the anti-opening slide rod to move on a predetermined track, and the anti-opening slide rod drives the linkage slide rod mechanism to move to a position where it cooperates with the lid-opening mechanism, restricting the lid-opening mechanism in the locked state. During the cooking process, after the pressure in the pot body exceeds a predetermined value, it will lift the anti-opening rod, and the anti-opening rod cooperates with the anti-opening slide rod to prevent the anti-opening slide rod from moving. During the cooking process, if the user wants to rotate the swing rod to open the locking lid, since the movement of the anti-opening slide rod is restricted by the anti-opening rod, the swing rod cannot rotate; if the user wants to operate the lid-opening mechanism to release the pot lid to open the pot lid relative to the pot body, since the linkage slide rod mechanism restricts the lid-opening mechanism in the locked state, the lid-opening mechanism cannot be operated either. In this way, when the pressure inside the pot is relatively high, double anti-opening is achieved, improving the safety performance of the electric pressure cooker and ensuring the safety of users during use.

[0015] In addition to the purposes, features, and advantages described above, the present invention has other purposes, features, and advantages. The following will refer to the drawings to further elaborate on the present invention in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The schematic diagrams in the specification forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0017] Figure 1 Shows a schematic diagram of the overall sectional structure of an embodiment of an electric pressure cooker according to the present invention;

[0018] Figure 2 Shows Figure 1 An enlarged schematic diagram of the lid-opening mechanism at position A of the electric pressure cooker in the locked state;

[0019] Figure 3 Shows Figure 2 A schematic diagram of the lid-opening mechanism of the electric pressure cooker in the unlocked state;

[0020] Figure 4 Shows Figure 1 A schematic diagram of the swing rod of the pot lid of the electric pressure cooker when operating the locking lid;

[0021] Figure 5 Shows Figure 4 An enlarged schematic diagram of position B of the electric pressure cooker;

[0022] Figure 6 Shows Figure 1 A schematic diagram of the swing rod of the pot lid of the electric pressure cooker when operating the unlocking;

[0023] Figure 7 Shows Figure 6 An enlarged structural schematic diagram of the pressure cooker at C;

[0024] Figure 8 Shows Figure 1 An exploded structural schematic diagram of the lid of the pressure cooker.

[0025] Among them, the above-mentioned drawings include the following reference numerals:

[0026] 10, pot body; 20, lid body; 30, locking lid; 40, swing rod; 50, anti-opening rod; 60, anti-opening sliding rod; 61, jack; 70, lid-opening mechanism; 80, linkage sliding rod mechanism; 81, linkage sliding rod; 811, first connecting rod; 812, second connecting rod; 813, bent rod; 814, convex column; 82, inserting rod; 83, reset mechanism. Detailed implementation manners

[0027] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so as to describe the embodiments of the present invention here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] Figure 1 An embodiment of the electric pressure cooker of the present invention is shown. The electric pressure cooker includes a pot body 10 and a pot lid. The pot body 10 is used to hold the ingredients to be cooked, and a heating device is provided inside the pot body 10. The pot lid includes a lid body 20, a lid locking member 30, and a swing rod 40. The lid body 20 is rotatably provided on the pot body 10. The lid locking member 30 is rotatably provided below the lid body 20, and the swing rod 40 is drivingly connected to the lid locking member 30. When in use, the lid locking member 30 can be driven to engage or open with the pot body 10 by rotating the swing rod 40. The pot lid further includes a lid locking prevention rod 50, a lid locking prevention slide rod 60, and an unlocking mechanism 70. The lid locking prevention rod 50 is movably provided on the lid body 20 in the vertical direction, and the lid locking prevention rod 50 moves upward when the pressure inside the pot body 10 is greater than a predetermined value. The lid locking prevention slide rod 60 is movably provided on the lid body 20 and is connected to the swing rod 40. When the pressure inside the pot body 10 is less than the predetermined value, the lid locking prevention slide rod 60 can move along a predetermined trajectory with the swing rod 40. When the pressure inside the pot body 10 is greater than the predetermined value, the lid locking prevention rod 50 cooperates with the lid locking prevention slide rod 60 to prevent the lid locking prevention slide rod 60 from moving. The unlocking mechanism 70 is provided between the lid body 20 and the pot body 10. The unlocking mechanism 70 has a locked state in which the pot lid is locked on the pot body 10, and an unlocked state in which the pot lid is released to allow the pot lid to open relative to the pot body 10. A linkage slide rod mechanism 80 is further provided on the lid body 20. The linkage slide rod mechanism 80 is connected to the lid locking prevention slide rod 60. When the swing rod 40 drives the lid locking member 30 to move, the lid locking prevention slide rod 60 drives the linkage slide rod mechanism 80 to move, and the linkage slide rod mechanism 80 cooperates with the unlocking mechanism 70 to limit the unlocking mechanism 70 in the locked state.

[0032] When implementing the technical solution of this embodiment and needing to use an electric pressure cooker for cooking, first close the pot lid, and then operate the swing rod 40 to drive the lid lock 30 to engage with the pot body 10. While the swing rod 40 drives the lid lock 30 to move, the swing rod 40 also drives the anti-opening slide rod 60 to move along a predetermined trajectory. The anti-opening slide rod 60 drives the linkage slide rod mechanism 80 to move to a position where it cooperates with the lid-opening mechanism 70, restricting the lid-opening mechanism 70 in the locked state. During the cooking process, when the pressure in the pot body 10 is greater than a predetermined value, it will push up the anti-opening rod 50. The anti-opening rod 50 cooperates with the anti-opening slide rod 60 to prevent the anti-opening slide rod 60 from moving. During the cooking process, if the user wants to turn the swing rod 40 to open the lid lock 30, since the movement of the anti-opening slide rod 60 is restricted by the anti-opening rod 50, the swing rod 40 cannot be turned; if the user wants to operate the lid-opening mechanism 70 to release the pot lid to open the pot lid relative to the pot body 10, since the linkage slide rod mechanism 80 restricts the lid-opening mechanism 70 in the locked state, the lid-opening mechanism 70 cannot be operated either. In this way, when the pressure inside the pot is relatively high, double anti-opening is achieved, improving the safety performance of the electric pressure cooker and ensuring the safety of users during use.

[0033] After cooking, when the pressure inside the pot body 10 is less than the predetermined value, the anti-opening rod 50 separates from the anti-opening slide rod 60. At this time, if the user operates the swing rod 40 to open the lid lock 30, there is no restriction from the anti-opening rod 50, and the swing rod 40 can be rotated to open the lid lock 30. During this process, the anti-opening slide rod 60 moves along a predetermined trajectory with the swing rod 40, driving the linkage slide rod mechanism 80 to separate from the lid-opening mechanism 70, and the user can then operate the lid-opening mechanism 70 to open the lid body 20 from the pot body 10.

[0034] As Figure 4 and Figure 6 shown, in the technical solution of this embodiment, a convex column 814 is provided on the linkage slide rod mechanism 80, and a jack 61 is provided on the anti-opening slide rod 60. The convex column 814 is connected in cooperation with the jack 61. The jack 61 on the anti-opening slide rod 60 cooperates with the convex column 814 on the linkage slide rod mechanism 80 to drive the linkage slide rod mechanism 80 to move. As an optional implementation manner, the jack 61 is a long hole, and the convex column 814 abuts against both ends of the jack 61 to drive the linkage slide rod mechanism 80 to move. As Figure 5 and Figure 7 shown, when the swing rod 40 drives the lid lock 30 to move, the convex column 814 first passes through the idle stroke in the long hole and then abuts against both ends of the jack 61 for cooperation. In the technical solution of this embodiment, since the actual movement stroke of the linkage slide rod mechanism 80 is less than the actual movement stroke of the anti-opening slide rod 60, by setting the jack 61 as a long hole, the movement stroke of the linkage slide rod mechanism 80 can be matched with the running stroke of the anti-opening slide rod 60. The actual movement stroke of the anti-opening slide rod 60 is equal to the sum of the actual movement stroke of the linkage slide rod mechanism 80 and the length of the long hole.

[0035] As other alternative embodiments, a convex post 814 may also be provided on the anti-opening slide rod 60, and a jack 61 is provided on the linkage slide rod mechanism 80. In this way, the anti-opening slide rod 60 can also drive the linkage slide rod mechanism 80 to move through the cooperation between the convex post 814 and the jack 61.

[0036] Specifically, in the technical solution of this embodiment, pot teeth are provided on the pot body 10, and lid teeth matching with the pot teeth are provided on the lock lid 30. The lock lid 30 has a locking position where the lid teeth are in abutting cooperation with the pot teeth and an unlocking position where the lid teeth are separated from the pot teeth. The swing rod 40 drives the lock lid 30 to move between the locking position and the unlocking position, and the linkage slide rod mechanism 80 is connected to the anti-opening slide rod 60. When the swing rod 40 drives the lock lid 30 to move to the locking position, the anti-opening slide rod 60 drives the linkage slide rod mechanism 80 to move, and the linkage slide rod mechanism 80 is in abutting cooperation with the lid-opening mechanism 70, restricting the lid-opening mechanism 70 in the locked state. When the swing rod 40 drives the lock lid 30 to move to the unlocking position, the anti-opening slide rod 60 drives the linkage slide rod mechanism 80 to move, and the linkage slide rod mechanism 80 is separated from the lid-opening mechanism 70, and the lid-opening mechanism 70 can be operated to the unlocked state.

[0037] When it is necessary to use the electric pressure cooker for cooking, the pot lid is buckled, and the swing rod 40 is operated to drive the lock lid 30 to move to the locking position. The swing rod 40 drives the linkage slide rod mechanism 80 to move through the anti-opening slide rod 60, and the linkage slide rod mechanism 80 is in abutting cooperation with the lid-opening mechanism 70 to restrict the lid-opening mechanism 70 in the locked state. At this time, the lock lid 30 is in the locking position, and the lid-opening mechanism 70 is in the locked state, achieving double anti-opening, improving the safety performance of the electric pressure cooker, and ensuring the use safety of the user.

[0038] After cooking is completed, when the pressure in the pot body 10 is less than a predetermined value, the user can operate the swing rod 40 to open the lock lid 30 and open the lock lid 30 to the unlocking position. At the same time, the swing rod 40 drives the linkage slide rod mechanism 80 to move through the anti-opening slide rod 60, and the linkage slide rod mechanism 80 is separated from the lid-opening mechanism 70, and the lid-opening mechanism 70 is in the unlocked state. At this time, the user can operate the lid-opening mechanism 70 to open the lid body 20 from the pot body 10.

[0039] Such as Figure 2 and Figure 3As shown in the figure, in the technical solution of this embodiment, the linkage slider mechanism 80 includes a linkage slider 81 and a plug rod 82. The linkage slider 81 is drivingly connected to the anti-opening slider 60 and is movably arranged on the cover body 20 in the horizontal direction. The plug rod 82 is drivingly connected to the linkage slider 81 and is movably arranged on the cover body 20 in the vertical direction. When the swing rod 40 drives the lock cover 30 to move to the locked position, the anti-opening slider 60 drives the linkage slider 81 to move in the horizontal direction, and the linkage slider 81 drives the plug rod 82 to move in the vertical direction. The plug rod 82 is in abutting cooperation with the cover-opening mechanism 70 to limit the cover-opening mechanism 70 in the locked state. When in use, by operating the swing rod 40 to drive the anti-opening slider 60 to move, the anti-opening slider 60 can drive the linkage slider 81 to move in the horizontal direction. Furthermore, the anti-opening slider 60 drives the plug rod 82 to move in the vertical direction and is in abutting cooperation with the cover-opening mechanism 70 to limit the cover-opening mechanism 70 in the locked state. At this time, the user cannot open the cover body 20 by operating the cover-opening mechanism 70. Specifically, as Figure 2 and Figure 3 shown, the cover-opening mechanism 70 includes a button and a hook. The hook is rotatably installed on the pot body 10, and the rotation of the hook can be realized by pressing the button. A hook groove matching with the hook is arranged on the cover body 20. When the cover body 20 is buckled on the pot body 10, the hook is matched with the hook groove to prevent the cover body 20 from being opened. By pressing the button to make the hook rotate and separate from the hook groove, the cover body 20 can be opened. The above-mentioned plug rod 82 moves in the vertical direction. When the plug rod 82 is inserted into the pot body 10, it can abut against the hook to prevent the hook from rotating, thereby preventing the cover body 20 from being opened.

[0040] As Figure 2 and Figure 3 shown, as an alternative embodiment, a ramp structure is arranged on the linkage slider 81, and the ramp structure cooperates with the plug rod 82 to press down the plug rod 82 to abut against the cover-opening mechanism 70. When in use, the swing rod 40 drives the anti-opening slider 60 to move, the anti-opening slider 60 drives the linkage slider 81 to move, the ramp structure on the linkage slider 81 moves towards the plug rod 82, and the plug rod 82 is gradually pressed down by the ramp structure to abut against the cover-opening mechanism 70, thereby playing a role in preventing the cover body 20 from being opened.

[0041] As Figure 3 shown, as an alternative embodiment, the linkage slider mechanism 80 further includes a reset mechanism 83. The reset mechanism 83 is installed on the plug rod 82. When the swing rod 40 drives the lock cover 30 to move to the unlocked position, the reset mechanism 83 drives the plug rod 82 to separate from the cover-opening mechanism 70. When in use, when the swing rod 40 drives the lock cover 30 to move to the unlocked position, at the same time, the ramp structure on the linkage slider 81 is driven by the anti-opening slider 60 to move away from the plug rod 82. After the pressure of the linkage slider 81 is removed, under the action of the reset mechanism 83, the plug rod 82 will be pulled out of the pot body 10 and separated from the hook. At this time, by operating the button, it can be rotated to open the cover body 20.

[0042] As Figure 6 and Figure 8 shown, in the technical solution of this embodiment, the linkage sliding rod 81 includes a first connecting rod 811 that cooperates with the unlocking sliding rod 60 and a second connecting rod 812 that cooperates with the inserting rod 82. The first connecting rod 811 and the second connecting rod 812 are connected by a bent rod 813. Generally, in the design of an electric pressure cooker, the swing rod 40 and the lid opening mechanism 70 are arranged along the center line of the electric pressure cooker, the inserting rod 82 is also arranged on the center line where the lid opening mechanism 70 is located, while the unlocking sliding rod 60 connected to the swing rod 40 cannot be arranged on this center line. By setting the linkage sliding rod 81 as the first connecting rod 811 connected to the unlocking sliding rod 60 and the second connecting rod 812 that cooperates with the inserting rod 82, and then connecting the first connecting rod 811 and the second connecting rod 812 by the bent rod 813, the technical solution of this embodiment is applicable to the above structural design. As a preferred implementation manner, the first connecting rod 811 and the second connecting rod 812 are parallel to each other.

[0043] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0044] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations are made for the spatial relative descriptions used here.

[0045] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0046] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An electric pressure cooker, characterized in that, comprising: a pot body (10) for containing the ingredients to be cooked, and a heating device is arranged in the pot body (10); a pot lid, including a lid body (20), a locking lid (30) and a swing rod (40), the lid body (20) is rotatably arranged on the pot body (10), the locking lid (30) is rotatably arranged below the lid body (20), and the swing rod (40) is drivingly connected to the locking lid (30); The pot lid further comprises: a lid-opening prevention rod (50) movably arranged on the lid body (20) in the vertical direction, and the lid-opening prevention rod (50) moves upward when the pressure in the pot body (10) is greater than a predetermined value; a lid-opening prevention slide rod (60) movably arranged on the lid body (20) and connected to the swing rod (40), when the pressure in the pot body (10) is less than the predetermined value, the lid-opening prevention slide rod (60) can move along a predetermined track with the swing rod (40), and when the pressure in the pot body (10) is greater than the predetermined value, the lid-opening prevention rod (50) cooperates with the lid-opening prevention slide rod (60) to prevent the lid-opening prevention slide rod (60) from moving; a lid-opening mechanism (70) arranged between the lid body (20) and the pot body (10), the lid-opening mechanism (70) has a locked state of locking the pot lid on the pot body (10), and an unlocked state of releasing the pot lid to allow the pot lid to be opened relative to the pot body (10); a linkage slide rod mechanism (80) is further arranged on the lid body (20), the linkage slide rod mechanism (80) is connected to the lid-opening prevention slide rod (60), when the swing rod (40) drives the locking lid (30) to move, the lid-opening prevention slide rod (60) drives the linkage slide rod mechanism (80) to move, and the linkage slide rod mechanism (80) cooperates with the lid-opening mechanism (70) to limit the lid-opening mechanism (70) in the locked state.

2. The electric pressure cooker according to claim 1, characterized in that, a convex column (814) is arranged on the linkage slide rod mechanism (80) or the lid-opening prevention slide rod (60), and a jack (61) adapted to the convex column (814) is arranged on the lid-opening prevention slide rod (60) or the linkage slide rod mechanism (80), and the convex column (814) is connected in cooperation with the jack (61).

3. The electric pressure cooker according to claim 2, characterized in that, the jack (61) is an elongated hole, the convex column (814) abuts against both ends of the jack (61) to drive the linkage slide rod mechanism (80) to move, and when the swing rod (40) drives the locking lid (30) to move, the convex column (814) first passes through the idle stroke in the elongated hole and then abuts against both ends of the jack (61).

4. The electric pressure cooker according to claim 3, characterized in that, the convex column (814) is arranged on the linkage slide rod mechanism (80), and the jack (61) is arranged on the lid-opening prevention slide rod (60).

5. The electric pressure cooker according to claim 1, characterized in that, The pot body (10) is provided with pot teeth, the lock cover (30) is provided with cover teeth that cooperate with the pot teeth, the lock cover (30) has a locking position where the cover teeth are in abutting cooperation with the pot teeth and an unlocking position where the cover teeth are separated from the pot teeth, and the swing rod (40) drives the lock cover (30) to move between the locking position and the unlocking position. The linkage slide rod mechanism (80) is connected to the anti-opening slide rod (60). When the swing rod (40) drives the lock cover (30) to move to the locking position, the anti-opening slide rod (60) drives the linkage slide rod mechanism (80) to move, and the linkage slide rod mechanism (80) is in abutting cooperation with the opening mechanism (70), restricting the opening mechanism (70) in the locked state. When the swing rod (40) drives the lock cover (30) to move to the unlocking position, the anti-opening slide rod (60) drives the linkage slide rod mechanism (80) to move, and the linkage slide rod mechanism (80) is separated from the opening mechanism (70), and the opening mechanism (70) can be operated to the unlocked state.

6. The electric pressure cooker according to claim 5, wherein, the linkage slide rod mechanism (80) includes: a linkage slide rod (81), which is drivingly connected to the anti-opening slide rod (60) and is movably arranged on the cover body (20) in the horizontal direction; a plug rod (82), which is drivingly connected to the linkage slide rod (81) and is movably arranged on the cover body (20) in the vertical direction; When the swing rod (40) drives the lock cover (30) to move to the locking position, the anti-opening slide rod (60) drives the linkage slide rod (81) to move in the horizontal direction, the linkage slide rod (81) drives the plug rod (82) to move in the vertical direction, and the plug rod (82) is in abutting cooperation with the opening mechanism (70), restricting the opening mechanism (70) in the locked state.

7. The electric pressure cooker according to claim 6, wherein, the linkage slide rod (81) is provided with a ramp structure, and the ramp structure cooperates with the plug rod (82) to press down the plug rod (82) to abut against the opening mechanism (70).

8. The electric pressure cooker according to claim 6, wherein, the linkage slide rod mechanism (80) further includes a reset mechanism (83), the reset mechanism (83) is installed on the plug rod (82), and when the swing rod (40) drives the lock cover (30) to move to the unlocking position, the reset mechanism (83) drives the plug rod (82) to be separated from the opening mechanism (70).

9. The electric pressure cooker according to claim 6, wherein, the linkage slide rod (81) includes a first connecting rod (811) that cooperates with the anti-opening slide rod (60) and a second connecting rod (812) that cooperates with the plug rod (82), and the first connecting rod (811) and the second connecting rod (812) are connected by a bent rod (813).

10. The electric pressure cooker according to claim 9, wherein, The first connecting rod (811) is parallel to the second connecting rod (812).

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