Electric pressure cooker

Abstract

The utility model discloses an electric pressure cooker which comprises a cooker body, a heating disc and a double-pressure switch, the heating disc is connected with the lower end of the cooker body, the double-pressure switch comprises a high-pressure switch and a low-pressure switch, two abutting columns are arranged on the heating disc, and the fixed end of the high-pressure switch and the fixed end of the low-pressure switch are both connected with the heating disc. The contact end of the high-pressure switch and the contact end of the low-pressure switch abut against the abutting columns respectively, after the electric pressure cooker starts cooking, the pressure in the cooker body rises, the heating disc can elastically deform, and when the pressure value in the cooker body reaches the preset high-pressure value and the preset low-pressure value required by cooking, the high-pressure switch and the low-pressure switch are switched on. When the electric pressure cooker is in use, the abutting column of the heating disc abuts against the contact end of the high-voltage switch and the contact end of the low-voltage switch, so that the high-voltage switch and the low-voltage switch are correspondingly tripped off, the pressure of the electric pressure cooker is adjustable, installation of the double-pressure switch is facilitated, and meanwhile the manufacturing cost of the electric pressure cooker is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to an electric pressure cooker. Background Art

[0002] Electric pressure cooker is one of the most common and commonly used kitchen appliances. With the development of science and technology, the functions of electric pressure cooker have been gradually improved. Electric pressure cooker can be used not only for cooking rice, but also for cooking tasks such as making porridge, soup, and steaming vegetables. The pressure required for cooking rice, porridge, soup, and steaming vegetables in electric pressure cooker is not the same, but the existing electric pressure cookers all use a single pressure switch, and the pressure of the electric pressure cooker cannot be adjusted, which cannot ensure the safety of the electric pressure cooker during use, and also causes the taste of cooked food to be monotonous.

[0003] At present, a switch bracket is provided at the bottom of the electric pressure cooker, and a dual pressure switch is provided on the switch bracket. The dual pressure switch includes a high pressure switch and a low pressure switch. The pressure of the electric pressure cooker can be regulated by the high pressure switch and the low pressure switch. However, the dual pressure switch needs to be installed on the switch bracket, which is not convenient for installation and will increase the production cost of the electric pressure cooker.

[0004] Therefore, how to reduce the production cost while satisfying the requirement of adjustable pressure of electric pressure cookers has become the focus of attention of those skilled in the art and related personnel. Utility Model Content

[0005] In view of this, the utility model provides an electric pressure cooker, which is used to solve the problem of increased manufacturing cost when the pressure of the electric pressure cooker is adjustable in the prior art.

[0006] In order to achieve one or part or all of the above-mentioned purposes or other purposes, the utility model proposes an electric pressure cooker, including a pot body, a heating plate and a dual pressure switch, the heating plate is connected to the lower end of the pot body, the dual pressure switch includes a high-pressure switch and a low-pressure switch, two abutment columns are arranged on the heating plate, the fixed end of the high-pressure switch and the fixed end of the low-pressure switch are both connected to the pot body, and the contact end of the high-pressure switch and the contact end of the low-pressure switch are respectively abutted with one of the abutment columns.

[0007] Preferably, the high-pressure switch includes a first pressure plate, a first abutment member is provided at one end of the first pressure plate, and the first abutment member abuts against one of the abutment columns; the low-pressure switch includes a second pressure plate, a second abutment member is provided at one end of the second pressure plate, and the second abutment member abuts against another of the abutment columns.

[0008] Preferably, the pot body includes an inner pot and an outer pot, the outer pot is placed outside the inner pot, the heating plate is arranged between the bottom wall of the inner pot and the bottom wall of the outer pot, and a first through hole and a second through hole are opened on the bottom wall of the outer pot. One of the abutment columns is exposed to the outer pot through the first through hole, and the other abutment column is exposed to the outer pot through the second through hole.

[0009] Preferably, a mounting platform is protruded on the bottom wall of the outer pot, and two mounting holes are provided on the mounting platform. The electric pressure cooker also includes two fixing parts, one of the fixing parts passes through the other end of the first pressure plate and is connected to one of the mounting holes, and the other fixing part passes through the other end of the second pressure plate and is connected to the other mounting hole.

[0010] Preferably, the high-voltage switch includes a first limit ring, a first wiring piece, a second wiring piece, a first ceramic ring, a second ceramic ring, a third ceramic ring, a first static contact piece, a first moving contact piece and a first adjustment component. The first adjustment component, the third ceramic ring, the second wiring piece, the first moving contact piece, the second ceramic ring, the first static contact piece, the first wiring piece, the first ceramic ring and the first pressure piece are sequentially mounted on the first limit ring from bottom to top, and one of the fixing parts passes through the first limit ring and is connected to one of the mounting holes.

[0011] Preferably, the first moving contact piece includes a first moving contact piece body, a first spring piece and a second spring piece, one end of the first moving contact piece body is sleeved on the first limit ring, the other end of the first moving contact piece body is connected to one end of the second spring piece, a first avoidance hole is opened on the first moving contact piece body, the first spring piece is connected to the first moving contact piece body and is located in the first avoidance hole, the other end of the second spring piece is provided with a first moving contact, one end of the first adjusting component is connected to the first spring piece, the high-voltage switch also includes a first insulating column, one end of the first insulating column is connected to the first pressure plate, and the other end of the first insulating column is connected to the first moving contact piece body.

[0012] Preferably, a first static contact is provided at one end of the first static contact piece, and the first static contact is arranged corresponding to the first moving contact one above and one below. When the first static contact abuts against the first moving contact, the high-voltage switch is opened, and when the first static contact is separated from the first moving contact, the high-voltage switch is closed.

[0013] Preferably, the low-voltage switch includes a second limit ring, a third wiring piece, a fourth wiring piece, a fourth ceramic ring, a fifth ceramic ring, a sixth ceramic ring, a second static contact piece, a second moving contact piece and a second adjustment assembly. The second adjustment assembly, the sixth ceramic ring, the fourth wiring piece, the second moving contact piece, the fifth ceramic ring, the second static contact piece, the third wiring piece, the fourth ceramic ring and the second pressure piece are sequentially mounted on the second limit ring from bottom to top, and another of the fixing parts passes through the second limit ring and is connected to another of the mounting holes.

[0014] Preferably, the second moving contact piece includes a second moving contact piece body, a third spring piece and a fourth spring piece, one end of the second moving contact piece body is sleeved on the second limit ring, the other end of the second moving contact piece body is connected to one end of the fourth spring piece, a second avoidance hole is provided on the second moving contact piece body, the third spring piece is connected to the second moving contact piece body and is located in the second avoidance hole, a second moving contact is provided at the other end of the fourth spring piece, one end of the second adjusting assembly is connected to the third spring piece, and the high-voltage switch also includes a second insulating column, one end of the second insulating column is connected to the second pressure plate, and the other end of the second insulating column is connected to the second moving contact piece body.

[0015] Preferably, a second static contact is provided at one end of the second static contact piece, and the second static contact and the second moving contact are arranged correspondingly one above and one below. When the second static contact abuts against the second moving contact, the low-voltage switch is opened, and when the second static contact is separated from the second moving contact, the low-voltage switch is closed.

[0016] Implementing the embodiments of the present utility model will have the following beneficial effects:

[0017] After adopting the above-mentioned electric pressure cooker, an abutment column is arranged on the heating plate, and the contact end of the high-pressure switch and the contact end of the low-pressure switch are both abutted with an abutment column. When the electric pressure cooker starts cooking, the pressure in the pot body rises, and the heating plate will undergo elastic deformation. When the pressure value in the pot body reaches the preset high and low pressure values ​​required for cooking, the abutment column of the heating plate will abut the contact ends of the high-pressure switch and the low-pressure switch, so that the high-pressure switch and the low-pressure switch are correspondingly tripped, thereby realizing the adjustable pressure of the electric pressure cooker, facilitating the installation of dual pressure switches, and reducing the manufacturing cost of the electric pressure cooker at the same time, solving the problem of increased manufacturing cost when the pressure of the electric pressure cooker is adjustable in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] in:

[0020] Figure 1 is a schematic diagram of the overall structure of an electric pressure cooker in one embodiment;

[0021] Figure 2 A schematic diagram of a partial structure of an electric pressure cooker in one embodiment;

[0022] Figure 3 for Figure 2 A magnified view of part A;

[0023] Figure 4 It is a partial structural schematic diagram of an electric pressure cooker in one embodiment, mainly used to reflect the installation platform of the dual pressure switch;

[0024] Figure 5 for Figure 2 Schematic diagram of the structure from different perspectives;

[0025] Figure 6 is a schematic structural diagram of a high-voltage switch of an electric pressure cooker in one embodiment;

[0026] Figure 7 Schematic diagram of the structure of a low-pressure switch of an electric pressure cooker in one embodiment.

[0027] Description of reference numerals: 1. outer shell; 2. pot body; 21. inner pot; 22. outer pot; 221. first through hole; 222. second through hole; 223. mounting platform; 224. mounting hole; 225. first mounting hole; 226. second mounting hole; 3. heating plate; 31. abutment column; 4. double pressure switch; 41. high pressure switch; 411. first pressure plate; 4111. first abutment member; 412. first limit stop ring; 413. first wiring piece; 414. second wiring piece; 415. first ceramic ring; 4151. second ceramic ring; 4152. third ceramic ring; 416. first static contact piece; 4161. first static contact point; 417. first moving contact piece; 4171. first moving contact piece body; 4172. first spring piece; 4173, second spring piece; 4174, first avoidance hole; 4175, first moving contact; 418, first adjusting assembly; 419, first insulating column; 42, low-voltage switch; 421, second pressure piece; 4211, second abutment piece; 422, second limit retaining ring; 423, third wiring piece; 424, fourth wiring piece; 425, fourth ceramic ring; 4251, fifth ceramic ring; 4252, sixth ceramic ring; 426, second static contact piece; 4261, second static contact; 427, second moving contact piece; 4271, second moving contact piece body; 4272, third spring piece; 4273, fourth spring piece; 4274, second avoidance hole; 4275, second moving contact; 428, second adjusting assembly; 429, second insulating column. DETAILED DESCRIPTION

[0028] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0030] It is understood that the singular forms "a", "an" and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0031] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to another element or there may be a centered element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes. In the present utility model, the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, the above-mentioned part of the terms may be used to express other meanings in addition to being used to express orientation or position relationship, for example, the term "upper" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to the specific circumstances.

[0032] In addition, the terms "disposed", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0033] Reference Figures 1 to 7 The embodiment of the utility model provides an electric pressure cooker, comprising a shell 1, a pot body 2, a heating plate 3 and a dual pressure switch 4, the pot body 2 is installed in the shell 1, the heating plate 3 is connected to the pot body 2, two abutting columns 31 are arranged on the heating plate 3, the dual pressure switch 4 comprises a high pressure switch 41 and a low pressure switch 42, the fixed end of the high pressure switch 41 and the fixed end of the low pressure switch 42 are both connected to the pot body 2, the contact end of the high pressure switch 41 and the contact end of the low pressure switch 42 are respectively abutted with an abutting column 31, the pressure in the pot body 2 rises, the heating plate 3 will undergo elastic deformation, when the pressure value in the pot body 2 reaches the preset high pressure and low pressure pressure values ​​required for cooking, the abutting column 31 of the heating plate 3 will abut the contact ends of the high pressure switch 41 and the low pressure switch 42, so that the high pressure switch 41 and the low pressure switch 42 are correspondingly tripped, thereby realizing the adjustable pressure of the electric pressure cooker, facilitating the installation of the dual pressure switch 4, and reducing the manufacturing cost of the electric pressure cooker.

[0034] Reference Figure 2 , Figure 3 and Figure 5The pot body 2 includes an inner pot 21 and an outer pot 22. The outer pot 22 is installed in the outer shell 1, and the inner pot 21 is placed in the outer pot 22. The heating plate 3 is arranged between the bottom wall of the inner pot 21 and the bottom wall of the outer pot 22. A first through hole 221 and a second through hole 222 are opened on the bottom wall of the outer pot 22. One abutment column 31 is exposed to the outer pot 22 through the first through hole 221, and the other abutment column 31 is exposed to the outer pot 22 through the second through hole 222, so as to facilitate the abutment between the two abutment columns 31 and the high-pressure switch 41 and the low-pressure switch 42.

[0035] Reference Figure 4 A mounting platform 223 is protruded on the bottom wall of the outer pot 22, and two mounting holes 224 are provided on the mounting platform 223, namely a first mounting hole 225 and a second mounting hole 226. The electric pressure cooker also includes two fixing parts, one fixing part passes through the fixed end of the high-voltage switch 41 and is connected to the first mounting hole 225, and the other fixing part passes through the fixed end of the low-voltage switch 42 and is connected to the second mounting hole 226, thereby fixing the high-voltage switch 41 and the low-voltage switch 42, wherein the fixing part is a fastening structure such as a screw.

[0036] Reference Figure 6 The high-voltage switch 41 includes a first pressure plate 411, a first limit stop ring 412, a first terminal plate 413, a second terminal plate 414, a first ceramic ring 415, a second ceramic ring 4151, a third ceramic ring 4152, a first static contact piece 416, a first moving contact piece 417 and a first adjustment component 418. The first adjustment component 418, the third ceramic ring 4152, the second terminal plate 414, the first moving contact piece 417, the second ceramic ring 4151, the first static contact piece 416, the first terminal plate 413, the first ceramic ring 415 and the first pressure plate 411 are arranged in order from bottom to top. The first limiting retaining ring 412 is sleeved on the first limiting retaining ring 412, and the first adjusting component 418, the third ceramic ring 4152, the second wiring piece 414, the first moving contact piece 417, the second ceramic ring 4151, the first static contact piece 416, the first wiring piece 413, the first ceramic ring 415 and the first pressure piece 411 are limited and fixed by the first limiting retaining ring 412 to prevent them from loosening and falling off. The first limiting retaining ring 412 has a hollow structure in the middle, so that the fixing part can pass through the middle of the first limiting retaining ring 412, thereby facilitating the high-voltage switch 41 to be fixed on the mounting platform 223.

[0037] Reference Figure 6The first movable contact piece 417 includes a first movable contact piece body 4171, a first elastic piece 4172 and a second elastic piece 4173. One end of the first movable contact piece body 4171 is sleeved on the first limit ring 412, and the other end of the first movable contact piece body 4171 is connected to one end of the second elastic piece 4173. A first avoidance hole 4174 is provided on the first movable contact piece body 4171. The first elastic piece 4172 is connected to the first movable contact piece body 4171 and is located in the first avoidance hole 4174. The other end of the second elastic piece 4173 is provided with a first movable contact point 4175. One end of the first adjusting component 418 is connected to the first limit ring 412. The first spring piece 4172 is connected, and the high-voltage switch 41 also includes a first insulating column 419. One end of the first insulating column 419 is connected to the first pressure plate 411, and the other end of the first insulating column 419 is connected to the first moving contact piece body 4171. A first static contact 4161 is provided at one end of the first static contact piece 416. The first static contact 4161 and the first moving contact 4175 are arranged correspondingly one above and one below. When the first static contact 4161 abuts against the first moving contact 4175, the high-voltage switch 41 is opened, and when the first static contact 4161 is separated from the first moving contact 4175, the high-voltage switch 41 is closed.

[0038] Reference Figure 7 The low-voltage switch 42 includes a second pressure plate 421, a second limit stop ring 422, a third terminal plate 423, a fourth terminal plate 424, a fourth ceramic ring 425, a fifth ceramic ring 4251, a sixth ceramic ring 4252, a second static contact piece 426, a second moving contact piece 427 and a second adjustment component 428. The second adjustment component 428, the sixth ceramic ring 4252, the fourth terminal plate 424, the second moving contact piece 427, the fifth ceramic ring 4251, the second static contact piece 426, the third terminal plate 423, the fourth ceramic ring 425 and the second pressure plate 421 are arranged in order from bottom to top. The second limiting retaining ring 422 is put on, and the second adjusting component 428, the sixth ceramic ring 4252, the fourth wiring piece 424, the second moving contact piece 427, the fifth ceramic ring 4251, the second static contact piece 426, the third wiring piece 423, the fourth ceramic ring 425 and the second pressure piece 421 are limited and fixed by the second limiting retaining ring 422 to prevent them from loosening and falling off. The second limiting retaining ring 422 has a hollow structure in the middle, so that the fixing part can pass through the middle of the second limiting retaining ring 422, thereby facilitating the low-voltage switch 42 to be fixed on the mounting platform 223.

[0039] Reference Figure 7The second movable contact piece 427 includes a second movable contact piece body 4271, a third elastic piece 4272 and a fourth elastic piece 4273. One end of the second movable contact piece body 4271 is sleeved on the second limit stop ring 422, and the other end of the second movable contact piece body 4271 is connected to one end of the fourth elastic piece 4273. A second avoidance hole 4274 is opened on the second movable contact piece body 4271. The third elastic piece 4272 is connected to the second movable contact piece body 4271 and is located in the second avoidance hole 4274. The other end of the fourth elastic piece 4273 is provided with a second movable contact point 4275. One end of the second adjusting component 428 is connected to the The third spring piece 4272 is connected, the high-voltage switch 41 also includes a second insulating column 429, one end of the second insulating column 429 is connected to the second pressure plate 421, the other end of the second insulating column 429 is connected to the second moving contact piece body 4271, and a second static contact 4261 is provided at one end of the second static contact piece 426, and the second static contact 4261 and the second moving contact 4275 are arranged correspondingly one above and one below. When the second static contact 4261 abuts against the second moving contact 4275, the low-voltage switch 42 is opened, and when the second static contact 4261 is separated from the second moving contact 4275, the low-voltage switch 42 is closed.

[0040] Reference Figure 3 A first abutting member 4111 is disposed at one end of the first pressure plate 411 , and a second abutting member 4211 is disposed at one end of the second pressure plate 421 . The first abutting member 4111 abuts against one abutting column 31 , and the second abutting member 4211 abuts against another abutting column 31 .

[0041] The working principle of the electric pressure cooker of the present application is as follows: when the electric pressure cooker starts cooking, the pressure in the inner pot 21 increases as the temperature increases, and at this time, the heating plate 3 undergoes elastic deformation.

[0042] When the pressure in the inner pot 21 does not reach the set pressure value of the low-pressure switch 42, the second moving contact 4275 of the low-pressure switch 42 abuts against the second static contact 4261, and the low-pressure switch 42 is in an open state. When the pressure in the inner pot 21 increases to exceed the set pressure value of the low-pressure switch 42, the abutting column 31 expands and sinks, and the abutting column 31 abuts the second abutting member 4211 to move downward, and the second insulating column 429 also moves downward accordingly. The third elastic sheet 4272 moves upward to abut one end of the fourth elastic sheet 4273 to move upward, thereby causing the other end of the fourth elastic sheet 4273 to move downward, and the second moving contact 4275 is separated from the second static contact 4261. The wires on the third wiring piece 423 and the fourth wiring piece 424 cut off the current in the electric pressure cooker to reduce the pressure in the inner pot 21. When the pressure in the electric pressure cooker returns to the set low-pressure range, the second moving contact 4275 abuts against the second static contact 4261, and the low-pressure switch 42 is opened.

[0043] When the pressure in the inner pot 21 does not reach the set pressure value of the high-pressure switch 41, the first moving contact 4175 of the high-pressure switch 41 abuts against the first static contact 4161, and the high-pressure switch 41 is in an open state. When the pressure in the inner pot 21 increases to exceed the set pressure value of the high-pressure switch 41, the abutting column 31 expands and sinks, and the abutting column 31 abuts the first abutting member 4111 to move downward, and the first insulating column 419 also moves downward accordingly. The first elastic sheet 4172 moves upward to abut one end of the second elastic sheet 4173 to move upward, thereby causing the other end of the second elastic sheet 4173 to move downward, and the first moving contact 4175 separates from the first static contact 4161. The wires on the first wiring piece 413 and the second wiring piece 414 cut off the current in the electric pressure cooker to reduce the pressure in the inner pot 21. When the pressure in the electric pressure cooker returns to the set high pressure range, the first moving contact 4175 abuts against the first static contact 4161, and the high-pressure switch 41 is opened.

[0044] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. An electric pressure cooker, characterized in that: The invention comprises a pot body (2), a heating plate (3) and a dual pressure switch (4), wherein the heating plate (3) is connected to the lower end of the pot body (2), the dual pressure switch (4) comprises a high pressure switch (41) and a low pressure switch (42), and the heating plate (3) is provided with two abutment columns (31), the fixed end of the high pressure switch (41) and the fixed end of the low pressure switch (42) are both connected to the pot body (2), and the contact end of the high pressure switch (41) and the contact end of the low pressure switch (42) are respectively abutted against one of the abutment columns (31).

2. An electric pressure cooker as claimed in claim 1, characterized in that: The high-pressure switch (41) includes a first pressure plate (411), one end of which is provided with a first abutment member (4111), and the first abutment member (4111) abuts against one of the abutment columns (31); the low-pressure switch (42) includes a second pressure plate (421), one end of which is provided with a second abutment member (4211), and the second abutment member (4211) abuts against another of the abutment columns (31).

3. An electric pressure cooker as claimed in claim 2, characterized in that: The pot body (2) comprises an inner pot (21) and an outer pot (22), wherein the outer pot (22) is sleeved outside the inner pot (21), the heating plate (3) is arranged between the bottom wall of the inner pot (21) and the bottom wall of the outer pot (22), a first through hole (221) and a second through hole (222) are provided on the bottom wall of the outer pot (22), one of the abutting columns (31) is exposed to the outer pot (22) through the first through hole (221), and the other of the abutting columns (31) is exposed to the outer pot (22) through the second through hole (222).

4. An electric pressure cooker as claimed in claim 3, characterized in that: A mounting platform (223) is protruded from the bottom wall of the outer pot (22), and two mounting holes (224) are provided on the mounting platform (223). The electric pressure cooker also includes two fixing members, one of the fixing members passes through the other end of the first pressure plate (411) and is connected to one of the mounting holes (224), and the other of the fixing members passes through the other end of the second pressure plate (421) and is connected to the other of the mounting holes (224).

5. An electric pressure cooker as claimed in claim 4, characterized in that: The high-voltage switch (41) comprises a first limit stop ring (412), a first wiring piece (413), a second wiring piece (414), a first ceramic ring (415), a second ceramic ring (4151), a third ceramic ring (4152), a first static contact piece (416), a first moving contact piece (417) and a first adjustment component (418); the first adjustment component (418), the third ceramic ring (4152), the second wiring piece (414), the first moving contact piece (417), the second ceramic ring (4151), the first static contact piece (416), the first wiring piece (413), the first ceramic ring (415) and the first pressure piece (411) are sequentially sleeved on the first limit stop ring (412) from bottom to top; and one of the fixing parts passes through the first limit stop ring (412) and is connected to one of the mounting holes (224).

6. An electric pressure cooker as claimed in claim 5, characterized in that: The first movable contact piece (417) comprises a first movable contact piece body (4171), a first elastic piece (4172) and a second elastic piece (4173); one end of the first movable contact piece body (4171) is sleeved on the first limit stop ring (412); the other end of the first movable contact piece body (4171) is connected to one end of the second elastic piece (4173); a first avoidance hole (4174) is provided on the first movable contact piece body (4171); the first elastic piece (4172) and the first movable contact piece body (4173) are connected to each other; 171) and is located in the first avoidance hole (4174), the other end of the second spring sheet (4173) is provided with a first moving contact (4175), one end of the first adjustment component (418) is connected to the first spring sheet (4172), the high-voltage switch (41) also includes a first insulating column (419), one end of the first insulating column (419) is connected to the first pressure sheet (411), and the other end of the first insulating column (419) is connected to the first moving contact sheet body (4171).

7. An electric pressure cooker as claimed in claim 6, characterized in that: A first static contact (4161) is provided at one end of the first static contact piece (416), and the first static contact (4161) and the first moving contact (4175) are arranged one above and one below correspondingly. When the first static contact (4161) and the first moving contact (4175) are in contact, the high-voltage switch (41) is opened, and when the first static contact (4161) and the first moving contact (4175) are separated, the high-voltage switch (41) is closed.

8. An electric pressure cooker as claimed in claim 4, characterized in that: The low-voltage switch (42) comprises a second limit stop ring (422), a third terminal plate (423), a fourth terminal plate (424), a fourth ceramic ring (425), a fifth ceramic ring (4251), a sixth ceramic ring (4252), a second static contact piece (426), a second moving contact piece (427) and a second adjustment component (428); the second adjustment component (428), the sixth ceramic ring (4252), the fourth terminal plate (424), the second moving contact piece (427), the fifth ceramic ring (4251), the second static contact piece (426), the third terminal plate (423), the fourth ceramic ring (425) and the second pressure piece (421) are sequentially sleeved on the second limit stop ring (422) from bottom to top; another fixing member passes through the second limit stop ring (422) and is connected to another mounting hole (224).

9. An electric pressure cooker as claimed in claim 8, characterized in that: The second moving contact piece (427) comprises a second moving contact piece body (4271), a third spring piece (4272) and a fourth spring piece (4273); one end of the second moving contact piece body (4271) is sleeved on the second limit stop ring (422); the other end of the second moving contact piece body (4271) is connected to one end of the fourth spring piece (4273); a second avoidance hole (4274) is provided on the second moving contact piece body (4271); the third spring piece (4272) and the second moving contact piece body (4273) are connected to each other; 271) is connected and is located in the second avoidance hole (4274), the other end of the fourth spring piece (4273) is provided with a second moving contact (4275), one end of the second adjustment component (428) is connected to the third spring piece (4272), the high-voltage switch (41) also includes a second insulating column (429), one end of the second insulating column (429) is connected to the second pressure plate (421), and the other end of the second insulating column (429) is connected to the second moving contact piece body (4271).

10. An electric pressure cooker as claimed in claim 9, characterized in that: A second static contact (4261) is provided at one end of the second static contact piece (426), and the second static contact (4261) and the second moving contact (4275) are arranged one above and one below correspondingly. When the second static contact (4261) and the second moving contact (4275) are in contact, the low-voltage switch (42) is opened, and when the second static contact (4261) and the second moving contact (4275) are separated, the low-voltage switch (42) is closed.

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