Motor-driven opening and closing cover structure and electric cooker
By using a motor-driven switch cover structure in the rice cooker, the automatic opening and closing of the pot cover is achieved, which solves the problems of inconvenient operation of the pot cover and the scalding of high-temperature steam spraying in the prior art, and improves safety and convenience.
Patent Information
- Application Number
- CN202420973179.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The switch cover method of the existing rice cooker is not suitable for automatic control and remote operation, and high-temperature steam or hot water droplets are easily sprayed when opening the cover, resulting in scalding.
The switch cover structure driven by a motor is adopted, including a cover drive mechanism and an electromagnetic switch assembly. The electric lifting mechanism and electromagnetic switch are used to automatically open and close the pot cover to avoid manual direct operation.
The automatic opening and closing of the pot cover is realized, avoiding the risk of high-temperature steam and hot water droplets being sprayed out and burning. It has a simple structure, convenient installation and operation, and is safe and reliable.
Smart Images
Figure CN222604353U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a household appliance, in particular to a motor-driven switch cover structure and an electric rice cooker. Background Art
[0002] The current rice cooker lid opening method on the market is generally to manually press the lid opening switch on the edge of the lid to open the lid, and then press the lid of the rice cooker to close it. This method of opening and closing the lid is not suitable for automatic control and remote operation of the rice cooker, resulting in the inability to achieve full automatic control of the rice cooker. Especially when the rice is just cooked, if the rice cooker is opened manually at this time, the high-temperature steam in the rice cooker will instantly spray out and scald the operator, and the hot water beads will be thrown out and scald the operator. Utility Model Content
[0003] The utility model aims to provide a motor-driven switch cover structure and an electric rice cooker, and the technical problem to be solved is to realize automatic opening and closing of a cover body.
[0004] In order to solve the above problems, the utility model adopts the following technical solutions: a motor-driven switch cover structure, comprising:
[0005] The cover driving mechanism includes a cover push plate, a push rod, and an electric lifting mechanism. The electric lifting mechanism drives the push rod to move vertically up and down. The cover push plate is connected to the hinged end of the pot cover. The hinged end of the pot cover is provided with a torsion spring.
[0006] The electromagnetic switch assembly is arranged opposite to the cover driving mechanism, and the electromagnetic switch assembly includes an electromagnetic switch and an armature assembly to lock the pot cover and the pot body;
[0007] When opening the lid, the electric lifting mechanism drives the push rod to move downward, the push rod moves away from the lid push plate, the electromagnetic switch assembly is powered off, and under the action of the torsion spring, the pot lid opens; when closing the lid, the electric lifting mechanism drives the push rod to move upward, pushes the lid push plate to close the pot lid, and locks the pot lid and the pot body after the electromagnetic switch assembly is powered on.
[0008] Furthermore, the electric lifting mechanism includes a motor, a swing arm, a slide, and a guide member. The output shaft of the motor is perpendicular to the axis of the push rod. One end of the swing arm is connected to the output shaft of the motor. A swing head is provided on the other end of the swing arm. The push rod is fixed on the slide. A guide groove is provided at the end of the slide opposite to the swing head. The extension direction of the guide groove is perpendicular to the axis of the push rod. The swing head is provided in the guide groove. The slide is provided on the guide member. The extension direction of the guide member is the same as the moving direction of the push rod. When the swing arm rotates, the swing head moves in the guide groove and drives the slide to move up and down along the guide member.
[0009] Furthermore, a pulley is provided on the swing head, and the pulley is arranged in the guide groove.
[0010] Furthermore, a pair of limit switches are symmetrically provided on the left and right sides of the motor output shaft, namely the first limit switch and the second limit switch. A contact is provided on the swing arm, which is opposite to the first limit switch or the second limit switch when the pot cover is opened or closed, so as to control the power supply of the electromagnetic switch assembly.
[0011] Furthermore, the push rod is hinged to the cover push plate.
[0012] Furthermore, a buffer is provided on the push rod, and the buffer includes a fixed sleeve, a first spring, and a push head. An inner cavity is provided in the fixed sleeve, and the first spring is arranged in the inner cavity. The push rod is fixed to the fixed sleeve, and a through hole is provided on the fixed sleeve for the push head to extend out. The diameter of the through hole is smaller than the diameter of the inner cavity. The push head is T-shaped and is invertedly arranged in the inner cavity. The push head part of the push head extends out of the through hole and is opposite to the cover push plate.
[0013] Furthermore, the push head is hinged to the cover push plate.
[0014] Furthermore, a buffer is provided on the push rod, and the buffer includes a fixed sleeve, a first spring, and a push head. An inner cavity is provided in the fixed sleeve, and the first spring is arranged in the inner cavity. The push rod is fixed to the fixed sleeve, and a through hole is provided on the fixed sleeve for the push head to extend out. The diameter of the through hole is smaller than the diameter of the inner cavity. The push head is T-shaped and is invertedly arranged in the inner cavity. The push head part of the push head extends out of the through hole and is opposite to the cover push plate.
[0015] Furthermore, the push head is hinged to the cover push plate.
[0016] The utility model also discloses an electric rice cooker, comprising a rice cooker cover and a rice cooker body, and also comprising the motor-driven switch cover structure, wherein the electromagnetic switch assembly is arranged on one end of the rice cooker cover and the rice cooker body away from the hinged end, the electromagnetic switch is arranged on the rice cooker body or the rice cooker cover, the armature assembly is arranged on the rice cooker cover or the rice cooker body, the electromagnetic switch is connected to a controller arranged in the rice cooker body, a first hinge seat is symmetrically arranged at one end of the rice cooker body located at the hinged end, a second hinge seat is arranged on the rice cooker cover, the second hinge seat is arranged between two first hinge seats, a rotating shaft fixed thereto is arranged on the second hinge seat, two ends of the rotating shaft are respectively inserted into the two first hinge seats, a torsion spring is sleeved on one end of the rotating shaft, one end of the torsion spring is fixed to the second hinge seat, and the other end is fixed to one of the first hinge seats, a cover push plate is fixed to the second hinge seat, and a push rod and an electric lifting mechanism are arranged in the rice cooker body.
[0017] Compared with the prior art, the utility model realizes automatic opening and closing of the rice cooker cover through an electric drive component. When opening the cover of the rice cooker, the operator can open the cover of the rice cooker away from the position of the cover of the rice cooker or open the cover of the rice cooker by remote control from a long distance, thereby avoiding accidents in which the high-temperature steam in the rice cooker sprays out and scalds the operator or the high-temperature water drops on the cover are thrown out and scalds people. The utility model has the advantages of easy installation and operation, simple structure, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The internal structure of the utility model is shown in FIG. Figure 1 .
[0019] Figure 2 The internal structure of the utility model is shown in FIG. Figure 2 .
[0020] Figure 3 It is a structural schematic diagram of the utility model when the pot lid is opened.
[0021] Figure 3-1 This is another schematic diagram of the connection between the push rod and the cover push plate of the utility model.
[0022] Figure 4 It is a structural schematic diagram of the utility model with a buffer.
[0023] Figure 5 yes Figure 1 A partial enlarged view of the part marked with A.
[0024] Figure 6 yes Figure 4 A partial enlarged view of the part marked with B. DETAILED DESCRIPTION
[0025] The utility model is further described in detail below with reference to the accompanying drawings and embodiments.
[0026] like Figure 1 and Figure 2 As shown, the utility model discloses a motor-driven switch cover structure, comprising:
[0027] The cover driving mechanism 300 includes a cover push plate 101, a push rod 311, and an electric lifting mechanism. The electric lifting mechanism drives the push rod 311 to move vertically up and down. The cover push plate 101 is connected to the hinged end of the pot cover 100. The hinged end of the pot cover 100 is provided with a torsion spring 105.
[0028] The electric lifting mechanism includes a motor 301, a swing arm 303, a slide 309, and a guide member 307. The output shaft 302 of the motor 301 is perpendicular to the axis of the push rod 311. The swing arm 303 is a long strip structure. One end of the swing arm 303 is connected to the output shaft 302 of the motor 301. The other end of the swing arm 303 is provided with a swing head 317. The swing head 317 is arranged on the side of the swing arm 303 opposite to the motor 301. The lower end of the push rod 311 is fixed on the slide 309. The end of the slide 309 opposite to the swing head 317 is provided with a guide member The guide groove 308 is perpendicular to the axis of the push rod 311. The swing head 317 is arranged in the guide groove 308. The slide 309 is arranged on the guide member 307. The guide member 307 is cylindrical. The extension direction of the guide member 307 is the same as the moving direction of the push rod 311. The slide 309 is provided with a through hole for the guide member 307 to pass through. The guide member 307 passes through the slide 309. When the swing arm 303 rotates, the swing head 317 moves in the guide groove 308 and drives the slide 309 to move up and down along the guide member 307.
[0029] The electromagnetic switch assembly is arranged opposite to the cover driving assembly 300 , and includes an electromagnetic switch 202 and an armature assembly 102 to lock the pot cover and the pot body.
[0030] When opening the lid, the electric lifting mechanism drives the push rod 311 to move downward, the push rod 311 is away from the lid push plate 101, the electromagnetic switch assembly is powered off, and under the action of the torsion spring 105, the pot cover 100 is opened; when closing the lid, the electric lifting mechanism drives the push rod 311 to move upward, push the lid push plate 101 to close the pot cover 100, and lock the pot cover and the pot body after the electromagnetic switch assembly is powered on; the purpose of setting the electromagnetic switch 202 is to make the armature assembly 102 on the pot cover 100 be attracted by magnetic force when the pot cover 100 is covered on the opening of the pot body 200, so that the pot cover 100 is kept on the opening of the pot body 200, thereby ensuring the sealing between the pot cover 100 and the opening of the pot body 200 of the rice cooker.
[0031] The motor 301 can be a synchronous motor with a reduction gearbox or a DC motor.
[0032] like Figure 1 and Figure 2 As shown, a pulley 304 is provided on the swing head 317, and the pulley 304 is arranged in the guide groove 308, so that the wheel surface of the pulley 304 contacts the groove wall of the guide groove 308, so that it can drive the slide 309 to move up and down more smoothly.
[0033] like Figure 2As shown, the motor 301 is fixed on the mounting plate 305, and a pair of limit switches are symmetrically arranged on the mounting plate 305 on the left and right sides of the output shaft 302 of the motor 301, which are respectively a first limit switch 3051 and a second limit switch 3052. A contact 3031 is arranged on the swing arm 303, which is opposite to the first limit switch 3051 or the second limit switch 3052 when the pot cover 100 is opened or closed, so as to control the power supply of the electromagnetic switch component, and the first limit switch 3051 is set as the push rod lower limit switch, and the second limit switch 3052 is set as the push rod upper limit switch. When the motor 301 rotates counterclockwise until the contact 3031 contacts the first limit switch 3051 to close the first limit switch 3051, the push rod 311 has left the cover push plate 101. At this time, the controller receives the signal of the first limit switch 3051 to control the electromagnetic switch 202 to cut off the power. The electromagnetic switch 202 has no magnetic force, and the pot cover 100 will leave the opening of the pot body 200 and open under the resetting action of the torsion spring 105; and when the motor 301 rotates clockwise to make the contact 3031 contact with the second limit switch 3052, when the second limit switch 3052 is closed, the push rod 311 pushes the cover push plate 101 to make the pot cover 100 cover the opening of the pot body 200. At this time, the controller receives the signal of the second limit switch 3052 to control the electromagnetic switch 202 to turn on the power. The electromagnetic switch 202 attracts the armature assembly by magnetic attraction, thereby keeping the pot cover 100 closed on the pot body 200.
[0034] like Figure 4 and Figure 6 As shown, a buffer 313 is provided on the push rod 311, and the buffer 313 includes a fixed sleeve 3135, a first spring 315, and a push head 316. The fixed sleeve 3135 is provided with an inner cavity 3133, and the first spring 315 is arranged in the inner cavity 3133. The push rod 311 is fixed to the fixed sleeve 3135, and the fixed sleeve 3135 is provided with a through hole 3132 for the push head 316 to extend out. The diameter of the through hole 3132 is smaller than the diameter of the inner cavity 3133. The push head 316 is T-shaped and is invertedly arranged in the inner cavity 3133. In the embodiment of the present invention, the push head portion of the push head 316 extends out from the through hole 3132 and is opposite to the cover push plate 101, and the upper edge of the inner cavity 3133 is restrained against the limiting portion of the push head 316 to prevent the push head 316 from escaping from the inner cavity 3133; the elastic force of the first spring 315 in the buffer 313 is used to reduce the contact force, adjust and reduce the pressure when the pot cover 100 and the pot body 200 are in contact, and the accuracy requirement of the fitting clearance between the pot cover 100 and the pot body 200 can be reduced, which has the effect of improving production efficiency.
[0035] like Figure 6 As shown, the fixed sleeve 3135 is sleeved on the upper end of the push rod 311 , and the push rod 311 and the fixed sleeve 3135 are connected and fixed by a screw 314 .
[0036] In the present invention, when the buffer 313 is not provided, the upper end of the push rod 311 can be hinged to the cover push plate 101 through the pin 1011 ( Figure 3-1 shown) or directly offset ( Figure 1 As shown), when the cover push plate 101 is offset, a guide groove ( Figure 1 As shown in FIG. 3 , the upper end of the push rod 311 is located in the guide groove to close the pot cover 100 by hinge or guidance; the pot cover 100 can also be opened by the traction force of the push rod 311 when the push rod 311 moves downward under the drive of the motor 301. If a buffer 313 is provided, the upper end of the push head 316 directly abuts against the cover push plate 101. When abutting, a guide groove is provided on the cover push plate 101, and the upper end of the push rod 311 is located in the guide groove to close the pot cover 100. Because of the existence of the buffer 313, there is a buffering force between the push rod 311 and the cover push plate 101, which is more convenient during production debugging. The size between the push rod 311 and the cover push plate 101 does not need to be so precise, which can reduce debugging time and improve production efficiency.
[0037] like Figure 1 and Figure 2As shown, the utility model also discloses an electric rice cooker, comprising a cover 100 and a body 200, the cover 100 and the body 200 are connected by a hinged manner, an inner pot 201 is arranged in the body 200, and the bottom is provided with related electrical components of the electric rice cooker in the prior art, such as a heating element 204, a temperature sensor 203 and a controller (not shown in the figure), the electric rice cooker also includes the above-mentioned motor-driven switch cover structure, a first hinge seat 103 is symmetrically arranged at one end of the body 200 located at the hinged end, a second hinge seat 106 is arranged on the cover 100, the second hinge seat 106 is arranged between the two first hinge seats 103, and on the second hinge seat 106, a The cover push plate 101 is fixed to the second hinge seat 106, and the cover push plate 101 can be fixed to the second hinge seat 106 by gluing or screwing. The cover push plate 101 and the pot cover 100 can also be designed to be integrally formed, and the cover push plate 101 is firmly connected to the pot cover 100 through structures such as reinforcing ribs. The cover drive mechanism is arranged on the same side of the pot body 200 as the hinge end, and an inner cavity for accommodating the cover drive mechanism is arranged in the pot body 200. The motor 301 is fixed to the mounting plate 305 and the inner cavity The lower end of the cavity wall of the pot body 200 is provided with a motor accommodating space on the cavity wall. The motor 301 is installed in the motor accommodating space through a base 306. The mounting plate 305 is fixed between the cavity wall and the bottom of the inner cavity of the pot body 200. The output shaft 302 of the motor 301 extends from the mounting plate 305. A pair of limit switches are symmetrically provided on the side plates on the left and right sides of the output shaft 302 of the motor 301, which are respectively a first limit switch 3051 and a second limit switch 3052. A contact 3031 is provided on the swing arm 303, which is opposite to the first limit switch 3051 or the second limit switch 3052 when the pot cover 100 is opened or closed. The lower end of the guide member 307 is fixed to the bottom of the inner cavity, and the upper end is connected to the first support member 307 through the first support member 307. The support frame 310 is fixed in the inner cavity, the first support frame 310 is fixed to the cavity wall of the inner cavity, a second support frame 312 is provided above the first support frame 310, the second support frame 312 is fixed to the cavity wall of the inner cavity, coaxial through holes are provided on the first support frame 310 and the second support frame 321 respectively, the push rod 311 is movably arranged in the through hole, the electromagnetic switch assembly is arranged on the end of the pot cover 100 and the pot body 200 away from the hinged end, the electromagnetic switch 202 is arranged on the pot body 200, the armature assembly 102 is arranged on the pot cover 100, the electromagnetic switch 202 is connected to the controller, and the controller is also electrically connected to the motor 301, the first limit switch 3051 and the second limit switch 3052.
[0038] like Figure 6As shown, the electromagnetic switch 202 is generally composed of a coil 2022 and an E-shaped iron core 2021, the coil 2022 is sleeved in the center of the E-shaped iron core, and the opening of the E-shaped iron core faces upward, the armature assembly 102 is composed of an I-shaped armature piece 1021, a second spring 1022 and a fixing frame 1023, the I-shaped armature piece 1021 is fixed on the fixing frame 1023, the lower end transverse portion thereof is located in the fixing frame 1023, and the upper end transverse portion thereof is located outside the upper end of the fixing frame 1023, the second spring 1022 is sleeved on the vertical portion between the upper end transverse portion and the fixing frame 1023, the armature assembly 102 corresponds to the electromagnetic switch 202, from Figure 1 It can be seen that an inner cavity is provided in the end of the pot cover 100 away from the hinged end, and the armature assembly 102 is arranged in the inner cavity. An electromagnetic switch accommodating cavity is provided at the edge of the opening of the end of the pot body 200 away from the hinged end, and the electromagnetic switch 202 is fixed in the electromagnetic switch accommodating cavity.
[0039] like Figure 2 As shown, when the pot cover 100 is closed on the opening of the pot body 200, the contact 3031 is opposite to the second limit switch 3052. When the motor 301 drives the rocker arm 303 to rotate counterclockwise ( Figure 3 As shown), when the contact 3031 is opposite to and in contact with the first limit switch 3051, so that the first limit switch 3051 is closed, the push head 316 or the push rod 311 has left the cover push plate 101. At this time, after the controller receives the signal from the first limit switch 3051, it controls the electromagnetic switch 202 to cut off the power. When the electromagnetic switch 202 has no magnetic force, the pot cover 200 will reset under the action of the elastic force of the torsion spring 105, and the pot cover 200 will be opened.
[0040] When the motor 301 drives the rocker arm 303 to rotate clockwise (such as Figure 2 As shown), the contact 3031 is opposite to and in contact with the second limit switch 3052, so that the second limit switch 3052 is closed, and at the same time, the push head 316 or the push rod 311 pushes the cover push plate 101 upward, so that the pot cover 100 covers the opening of the pot body 200. At this time, after the controller receives the signal from the second limit switch 3052, it controls the electromagnetic switch 202 to be energized, and the electromagnetic switch 202 magnetically attracts the armature assembly to tightly close the pot cover 100 on the pot body 200.
[0041] The utility model starts the motor 301 to work by pressing a "close lid" button on the control panel of the electric rice cooker or clicking a "close lid" icon through a mobile phone app.
[0042] The utility model can open the rice cooker cover from a distance or by remote control, thus avoiding accidents of scalding an operator by spraying high-temperature steam in the rice cooker or scalding a person by splashing high-temperature water drops on the rice cooker cover, and realizing automatic opening and closing of the rice cooker cover.
Claims
1. A motor driven switch cover structure, characterized in that: include: A cover driving mechanism (300), the cover driving mechanism comprising a cover pushing plate (101), a push rod (311), and an electric lifting mechanism, the electric lifting mechanism driving the push rod (311) to move vertically up and down, the cover pushing plate (101) being connected to a hinged end of the pot cover (100), and a torsion spring (105) being provided at the hinged end of the pot cover (100); An electromagnetic switch assembly is arranged opposite to the cover driving mechanism (300), and comprises an electromagnetic switch (202) and an armature assembly (102) to lock the pot cover and the pot body; When the lid is opened, the electric lifting mechanism drives the push rod (311) to move downward, the push rod (311) is away from the lid push plate (101), the electromagnetic switch assembly is powered off, and under the action of the torsion spring (105), the pot lid (100) is opened; when the lid is closed, the electric lifting mechanism drives the push rod (311) to move upward, pushes the lid push plate (101) to close the pot lid (100), and after the electromagnetic switch assembly is powered on, the pot lid and the pot body are locked.
2. The motor-driven switch cover structure according to claim 1, characterized in that: The electric lifting mechanism comprises a motor (301), a swing arm (303), a slide (309), and a guide member (307); an output shaft (302) of the motor (301) is perpendicular to an axis of a push rod (311); one end of the swing arm (303) is connected to the output shaft (302) of the motor (301); a swing head (317) is provided on the other end of the swing arm (303); the push rod (311) is fixed on the slide (309); the slide (309) and the swing head (317) are opposite to each other. A guide groove (308) is provided at one end, the extension direction of the guide groove (308) is perpendicular to the axis of the push rod (311), the swing head (317) is provided in the guide groove (308), the slide (309) is provided on the guide member (307), the extension direction of the guide member (307) is the same as the moving direction of the push rod (311), when the swing arm (303) rotates, the swing head (317) moves in the guide groove (308) and drives the slide (309) to move up and down along the guide member (307).
3. The motor-driven switch cover structure according to claim 2, characterized in that: The swing head (317) is provided with a pulley (304), and the pulley (304) is arranged in the guide groove (308).
4. The motor driven switch cover structure according to claim 2 or 3, characterized in that: A pair of limit switches are symmetrically arranged on the left and right sides of the output shaft (302) of the motor (301), which are respectively a first limit switch (3051) and a second limit switch (3052). A contact (3031) is arranged on the swing arm (303) to be opposite to the first limit switch (3051) or the second limit switch (3052) when the pot cover (100) is opened or closed, so as to control the power supply of the electromagnetic switch assembly.
5. The motor-driven switch cover structure according to claim 4, characterized in that: The push rod (311) is hinged to the cover push plate (101).
6. The motor driven switch cover structure according to claim 4, characterized in that: The push rod (311) is provided with a buffer (313), the buffer (313) comprises a fixed sleeve (3135), a first spring (315), and a push head (316); an inner cavity (3133) is provided in the fixed sleeve (3135), the first spring (315) is arranged in the inner cavity (3133), the push rod (311) is fixed to the fixed sleeve (3135), a through hole (3132) is provided in the fixed sleeve (3135) for the push head (316) to extend out, the diameter of the through hole (3132) is smaller than the diameter of the inner cavity (3133), the push head (316) is T-shaped, and is invertedly arranged in the inner cavity (3133), and the push head part of the push head (316) extends out of the through hole (3132) and is opposite to the cover push plate (101).
7. The motor-driven switch cover structure according to claim 6, characterized in that: The push head (316) is hinged to the cover push plate (101).
8. The motor driven switch cover structure according to any one of claims 1 to 3, characterized in that: The push rod (311) is provided with a buffer (313), the buffer (313) comprises a fixed sleeve (3135), a first spring (315), and a push head (316); an inner cavity (3133) is provided in the fixed sleeve (3135), the first spring (315) is arranged in the inner cavity (3133), the push rod (311) is fixed to the fixed sleeve (3135), a through hole (3132) is provided in the fixed sleeve (3135) for the push head (316) to extend out, the diameter of the through hole (3132) is smaller than the diameter of the inner cavity (3133), the push head (316) is T-shaped, and is invertedly arranged in the inner cavity (3133), and the push head part of the push head (316) extends out of the through hole (3132) and is opposite to the cover push plate (101).
9. The motor-driven switch cover structure according to claim 8, characterized in that: The push head (316) is hinged to the cover push plate (101).
10. An electric rice cooker, comprising a rice cooker cover (100) and a rice cooker body (200), characterized in that: The invention also comprises a motor-driven switch cover structure as claimed in any one of claims 1 to 9, wherein the electromagnetic switch assembly is arranged on one end of the pot cover (100) and the pot body (200) away from the hinged end, the electromagnetic switch (202) is arranged on the pot body (200) or the pot cover (100), the armature assembly (102) is arranged on the pot cover (100) or the pot body (200), the electromagnetic switch (202) is connected to a controller arranged in the pot body (200), a first hinge seat (103) is symmetrically arranged at one end of the pot body (200) located at the hinged end, and a second hinge seat (106) is arranged on the pot cover (100), The second hinge seat (106) is arranged between the two first hinge seats (103), and a rotating shaft (104) fixed thereto is arranged on the second hinge seat (106), and two ends of the rotating shaft (104) are respectively inserted into the two first hinge seats (103), and a torsion spring (105) is sleeved on one end of the rotating shaft (104), and one end of the torsion spring (105) is fixed to the second hinge seat (106), and the other end is fixed to one of the first hinge seats (103), and the cover push plate (101) is fixed on the second hinge seat (106), and the push rod (311) and the electric lifting mechanism are arranged in the pot body (200).