Cooker cover and pressure cooker

Abstract

The utility model provides a pot cover and a pressure cooker, which comprise a cover body and an elastic sealing ring, the elastic sealing ring is sleeved on the cover body along the circumferential direction, the elastic sealing ring is used for being arranged in a pot body, the pot cover further comprises a driving mechanism and a plurality of sealing pressing blocks, the sealing pressing blocks are circumferentially distributed around the axis of the cover body and located on the inner side of the elastic sealing ring, the sealing pressing blocks are slidably arranged on the cover body in the radial direction of the cover body, the first ends of the sealing pressing blocks are connected with the driving mechanism, and the second ends of the sealing pressing blocks are opposite to the elastic sealing ring. The driving mechanism can drive the second ends of the multiple sealing pressing blocks to extrude the elastic sealing ring outwards and enable the elastic sealing ring to generate elastic deformation, the elastic deformation of the elastic sealing ring is used for being matched with the inner wall of the pot body to form sealing, and the outer side faces of the adjacent sealing pressing blocks are staggered in the circumferential direction of the cover body. The sealing device has the advantages of being simple in structure, convenient to operate and good in sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of pressure cooker technology, specifically to a pot lid and a pressure cooker. Background Technology

[0002] Pressure cookers are popular among consumers because they are energy-saving, time-saving, and have multiple cooking functions. Pressure cookers utilize the physical phenomenon that the boiling point of a liquid increases under higher pressure. By applying pressure to water, the water can reach a higher temperature without boiling, thus speeding up the cooking process.

[0003] Pressure cookers generally consist of a pot body and a lid. In order to achieve a high-pressure effect, the lid and the pot body need to be sealed and locked together to achieve pressure sealing. Current sealing and locking structures for the lid and the pot body generally include clamp type, screw type, telescopic type, etc. However, clamp type and screw type are generally more complex in structure, cumbersome to operate and more expensive, while telescopic locking has a poor sealing effect.

[0004] Therefore, it is essential to design a pressure cooker with a simple structure, convenient operation, and good sealing performance. Utility Model Content

[0005] This utility model aims to solve one of the technical problems in related technologies to a certain extent. To this end, this utility model provides a pot lid and a pressure cooker, which have the advantages of simple structure, convenient operation, and good sealing effect.

[0006] To achieve the above objectives, the first aspect of this utility model discloses a pot lid, including a lid body and an elastic sealing ring. The elastic sealing ring is circumferentially fitted onto the lid body and is used to be disposed inside the pot body. The pot lid also includes a driving mechanism and a plurality of sealing blocks. The plurality of sealing blocks are circumferentially distributed around the axis of the lid body and located inside the elastic sealing ring. The sealing blocks are slidably disposed on the lid body radially. The first end of the sealing block is connected to the driving mechanism, and the second end of the sealing block is opposite to the elastic sealing ring. The driving mechanism can drive the second ends of the plurality of sealing blocks to press the elastic sealing ring outward and cause the elastic sealing ring to elastically deform. The elastic deformation of the elastic sealing ring is used to cooperate with the inner wall of the pot body to form a seal. The outer surfaces of adjacent sealing blocks are staggered circumferentially on the lid body.

[0007] Furthermore, the cover includes an inner cover and an outer cover, which are fastened together to form a receiving cavity. The driving mechanism includes a driving part and an operating part. The driving part is located inside the receiving cavity. The first end of the operating part is connected to the driving part, and the second end of the operating part extends out of the cover. A guide groove communicating with the receiving cavity is formed on the side wall of the cover. The guide groove is opposite to the elastic sealing ring. The sealing block is slidably disposed in the guide groove. The first end of the sealing block is located inside the receiving cavity and connected to the driving part, and the second end of the sealing block is located outside the receiving cavity. By operating the operating part, the driving part can be driven to rotate, thereby driving multiple sealing blocks to move synchronously along the radial extension and retraction of the cover.

[0008] Furthermore, the inner cover includes a support member and a bottom connector. The bottom connector is fixed to the bottom of the support member. The bottom connector and the outer cover are connected by a connector. The support member includes a support plate and an annular plate. The annular plate protrudes from the top surface of the support plate. A guide groove is formed on the side wall of the annular plate. A guide boss corresponding to the guide groove is formed on the top surface of the support plate. A guide groove that mates with the guide boss is formed at the bottom of the sealing block. The sealing block is slidably connected to the guide boss through the guide groove.

[0009] Furthermore, the outer cover includes an outer panel, a mating portion, and a limiting portion. The mating portion is located at the bottom of the outer panel and connected to the bottom connector. The limiting portion protrudes circumferentially from the outer side wall of the outer panel and is used to cooperate with the top of the pot body to limit the relative position of the pot cover and the pot body. The elastic sealing ring includes a top sealing ring, a middle sealing ring, and a bottom sealing ring. The top sealing ring is sleeved on the outer side of the outer panel, and the top end of the top sealing ring abuts against the bottom surface of the limiting portion. The bottom sealing ring is fixed between the support plate and the bottom connector. The middle sealing ring is opposite to the second end of the sealing block, and the second end of the sealing block can squeeze the middle sealing ring and cause it to produce the elastic deformation.

[0010] Furthermore, the bottom connector includes a base plate and an edge ring plate. The edge ring plate is located at the outer edge of the base plate and protrudes from the top surface of the base plate. The top of the edge ring plate has an outwardly folded flange. The flange and the bottom surface of the support plate are opposite to each other. The support plate includes an annular protrusion protruding from the bottom surface of the support plate. A gap matching the thickness of the elastic sealing ring is formed between the outer wall of the protrusion and the inner wall of the edge ring plate, between the flange and the bottom surface of the support plate, and between the bottom surface of the protrusion and the top surface of the base plate. The bottom sealing ring is squeezed and fixed within the gap.

[0011] Furthermore, the drive unit has a plurality of drive grooves extending circumferentially, and the distance between each point on the drive groove and the axial direction of the drive unit gradually changes circumferentially. The first end of the sealing block has a mating part, which is accommodated in the drive groove. The sealing block can extend and retract radially in the guide groove as the drive unit rotates.

[0012] Furthermore, the sealing block includes a connecting part and an arc-shaped extrusion part. One inner end of the connecting part forms the first end of the sealing block and extends into the receiving cavity of the cover body to be connected to the driving part of the driving mechanism. The arc-shaped extrusion part is located between the elastic sealing ring and the cover body. One outer end of the arc-shaped extrusion part forms the second end of the sealing block. The outer surface of the arc-shaped extrusion part is an arc surface around the axis of the cover body.

[0013] Furthermore, the arc-shaped extrusion part includes an extrusion body and an extension member. The extension member is connected to the extrusion body. The extension member includes a side extension member that fits against the outer arc surface of the extrusion body and a top extension member that fits against the top surface of the extrusion body. The side extension member and the top extension member are connected. One end of the side extension member protrudes circumferentially from the side wall of the extrusion body along the circumferential direction of the cover and is radially offset from the outer surface of the adjacent sealing block along the radial direction of the cover.

[0014] Furthermore, the arc-shaped extrusion part includes an extrusion body, a first protrusion, and a second protrusion. The first protrusion protrudes from the side wall of the extrusion body in a clockwise direction along the circumference of the cover and forms a first gap with the bottom surface of the extrusion body. The second protrusion protrudes from the side wall of the extrusion body in a counterclockwise direction along the circumference of the cover and forms a second gap with the top surface of the extrusion body. The first protrusion extends into the second gap of the adjacent arc-shaped extrusion part, and the second protrusion extends into the first gap of the adjacent arc-shaped extrusion part, so as to form a structure in which the first protrusion and the adjacent second protrusion are staggered along the axial direction of the cover.

[0015] The second aspect of this utility model discloses a pressure cooker, including a lid and a pot body. The lid adopts the lid of the first aspect. The inner wall of the pot body has an annular inner boss around the axis of the pot body. When the lid is placed on the pot body, the driving mechanism can drive the second ends of the plurality of sealing blocks to press the elastic sealing ring outward and cause the elastic sealing ring to elastically deform to the underside of the inner boss.

[0016] In the pot lid and pressure cooker provided by this utility model, after the pot lid is placed on the pot body, the driving mechanism can drive the sealing block to extend outwards and cause the second end of the sealing block to squeeze out the elastic sealing ring, so that the elastic sealing ring cooperates with the protrusion or groove structure on the inner wall of the pot, thereby locking the pot lid and the pot body and sealing the gap between them through the elastic sealing ring, thereby achieving a high-pressure sealing effect and ensuring the stability of the gas pressure inside the pot when the pressure cooker heats food.

[0017] The lid provided by this invention engages and locks with the inner wall of the pot through a sealing block and an extended elastic sealing ring. Compared with existing clamp-type and screw-on pressure cookers, this effectively reduces the complexity of the lid and pot body edge structure and the amount of material used, thereby reducing the manufacturing cost of the pressure cooker. Furthermore, since the sealing block and elastic sealing ring extend radially in all directions, there is no need to control the relative rotation angle between the lid and the pot body when using the lid provided by this invention. Compared with existing screw-on pressure cookers, this improves the convenience of using the pressure cooker and enhances the user experience.

[0018] Furthermore, the sealing block and corresponding transmission structure in the lid provided by this utility model are all located inside the lid, making the lid's appearance similar to that of an ordinary cookware. Users are less likely to mistake the lid provided by this utility model, or the pressure cooker structure using this lid, for a dangerous pressure vessel, effectively preventing users from developing a fear of pressure cookers. Moreover, the lid provided by this utility model has a wide range of applications and can be adapted to some existing pots with bosses or grooves.

[0019] Finally, the sealing block in the pot lid provided by this utility model has an extended circumferential design.

[0020] The extended portion of the sealing block ensures no gaps between adjacent sealing blocks when the diameter of the sealing block distribution changes. In this way, the outer surfaces of multiple sealing blocks form a closed structure in the circumferential direction. When the elastic sealing ring is compressed, multiple sealing blocks will apply pressure to the elastic sealing ring in the circumferential direction, thus improving the sealing effect.

[0021] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Figure 1This is a schematic diagram illustrating the existence of gaps in existing telescopic locking mechanisms.

[0024] Figure 2 This is a cross-sectional view of the pot lid according to one embodiment of the present invention;

[0025] Figure 3 for Figure 2 Enlarged view of a portion of the image;

[0026] Figure 4 This is a diagram of the pot lid in a shrunken state according to one embodiment of the present invention (the sealing block includes an extension).

[0027] Figure 5 for Figure 4 Diagram showing the extended sealing block of the middle pot lid;

[0028] Figure 6 This is a structural diagram of the sealing block according to one embodiment of the present invention;

[0029] Figure 7 This is a diagram showing the internal structure of the pot lid according to one embodiment of the present invention;

[0030] Figure 8 This is a diagram of the pot lid in a shrunken state according to one embodiment of the present invention (the sealing block includes a first protrusion and a second protrusion).

[0031] Figure 9 for Figure 8 Diagram showing the extended sealing block of the middle pot lid;

[0032] Figure 10 This is a structural diagram of the sealing block according to one embodiment of the present invention;

[0033] Figure 11 This is a schematic diagram of the natural state of the elastic sealing ring of the pressure cooker according to one embodiment of the present invention;

[0034] Figure 12 This diagram shows the structure of the pressure cooker of this invention, in which the elastic sealing ring is squeezed outwards and fits into the cooker body.

[0035] in,

[0036] 110. Cover;

[0037] 111. Inner cover; 1111. Support plate; 1112. Annular plate; 1113. Guide groove; 1114. Guide boss; 1115. Protrusion; 1116. Base plate; 1117. Edge ring plate; 1118. Flanged edge;

[0038] 112. Outer cover; 1121. Outer panel; 1122. Connecting part; 1123. Limiting part;

[0039] 120. Elastic sealing ring; 121. Top sealing ring; 122. Middle sealing ring; 123. Bottom sealing ring;

[0040] 130. Drive mechanism; 131. Drive unit; 1311. Drive slot; 132. Operating unit;

[0041] 140. Sealing block; 141. Connecting part; 142. Arc-shaped extrusion part; 1421. Extrusion body; 1422. Side extension part; 1423. Top extension part; 1424. Guide groove; 143. Mating part;

[0042] 1425. First protrusion; 1426. Second protrusion;

[0043] 200. Pot body; 210. Inner boss. Detailed Implementation

[0044] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0045] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in one embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0046] Existing structures use a similar method of locking the lid and pot body by extending and retracting sealing blocks. However, during the locking process, the distribution diameter of the multiple sealing blocks changes. When the distribution diameter increases, a gap is created between adjacent sealing blocks. (See attached diagram.) Figure 1 If there is a gap 'a' in the pressure cooker, then when the sealing block compresses the elastic sealing ring, the gap between adjacent sealing blocks cannot compress the elastic sealing ring. This will result in poor sealing (or even no sealing) at the elastic sealing ring opposite the gap, thus affecting the overall sealing effect of the pressure cooker.

[0047] One embodiment of this utility model discloses a pot lid, see attached drawing. Figure 2-10The lid includes a cover 110 and an elastic sealing ring 120. The elastic sealing ring 120 is circumferentially fitted onto the cover 110 and is used to be disposed within the pot body 200. The pot lid also includes a drive mechanism 130 and a plurality of sealing blocks 140. The plurality of sealing blocks 140 are circumferentially distributed around the axis of the cover 110 and located inside the elastic sealing ring 120. The sealing blocks 140 are slidably disposed on the cover 110 radially. The first end of the sealing block 140 is connected to the driving mechanism 130, and the second end of the sealing block 140 is opposite to the elastic sealing ring 120. The driving mechanism 130 can drive the second ends of multiple sealing blocks 140 to press the elastic sealing ring 120 outward and cause the elastic sealing ring 120 to undergo elastic deformation. The elastic deformation of the elastic sealing ring 120 is used to cooperate with the inner wall of the pot body 200 to form a seal. The outer surfaces of adjacent sealing blocks 140 are intersected in the circumferential direction of the cover body 110.

[0048] In this embodiment, when the pot lid is in use, the driving mechanism 130 can drive multiple sealing blocks 140 to slide and extend along the radial direction of the pot lid. During the process of the sealing blocks 140 extending outward, the sealing blocks 140 will squeeze the elastic sealing ring 120 outward to generate elastic deformation and protrude outward. In use, the protruding part of the elastic sealing ring 120 can cooperate with the boss or groove on the pot body 200, thereby realizing the sealing between the pot lid and the pot body 200.

[0049] In this embodiment, the sealing blocks 140 are circumferentially distributed around the axis of the cover 110. In actual use, the sealing blocks 140 can compress the elastic sealing ring 120 in the circumferential direction to achieve a better sealing effect.

[0050] In this embodiment, the sealing block 140 switches between sealing and releasing the seal through radial extension and retraction. Since the relative gap between adjacent sealing blocks 140 changes during radial movement, this embodiment avoids gaps between adjacent sealing blocks 140 when they extend to their outermost position. This is achieved by setting the outer surfaces of the sealing blocks 140 in a staggered circumferential pattern. This staggered structure compensates for any gaps that may exist between adjacent sealing blocks 140 when their circumferential distribution changes, resulting in a continuous, gapless effect on the circumference after multiple sealing blocks 140 extend. (See attached diagram.) Figure 5 , 9 This improves the sealing effect.

[0051] This utility model does not specifically limit the specific driving form of the driving mechanism 130. The driving mechanism 130 can drive the movement of the sealing block 140 by rotation or linear motion. In actual use, the user controls the action of the driving mechanism 130.

[0052] In this utility model, the specific structure of the sealing block 140 is not specifically limited. In actual design, the staggered structure of the outer side of the sealing block 140 can have different forms, as long as it can ensure that there is no gap between adjacent sealing blocks 140 after the sealing block 140 is extended.

[0053] Regarding the specific structure of the sealing block 140, this utility model provides the following two specific implementation methods:

[0054] First, see appendix. Figure 4-7 The sealing block 140 includes a connecting part 141 and an arc-shaped pressing part 142. One inner end of the connecting part 141 forms the first end of the sealing block 140 and extends into the receiving cavity of the cover 110 and is connected to the driving part 131 of the driving mechanism 130. The arc-shaped pressing part 142 is located between the elastic sealing ring 120 and the cover 110. One outer end of the arc-shaped pressing part 142 forms the second end of the sealing block 140. The outer surface of the arc-shaped pressing part 142 is an arc surface around the axis of the cover 110. The arc-shaped extrusion part 142 includes an extrusion body 1421 and an extension. The extension is connected to the extrusion body 1421. The extension includes an extension in the direction of the outer arc surface of the extrusion body 1421. One end of the extension protrudes circumferentially from the side wall of the extrusion body 1421 along the cover 110 and is radially offset from the outer surface of the adjacent sealing block 140 along the cover 110.

[0055] The arc-shaped extrusion part 142 includes an extrusion body 1421 and an extension. The extension is connected to the extrusion body 1421. The extension includes a side extension 1422 that fits against the outer arc surface of the extrusion body 1421 and a top extension 1423 that fits against the top surface of the extrusion body 1421. The side extension 1422 and the top extension 1423 are connected. One end of the side extension 1422 protrudes circumferentially from the side wall of the extrusion body 1421 along the cover 110 and is radially offset from the outer surface of the adjacent sealing block 140 along the cover 110.

[0056] In this embodiment, the extension is disposed on the radially outer side of the extrusion body 1421. In the radial direction, the extension extends circumferentially and can wrap around the outer side of the arc-shaped extrusion portion 142 of the adjacent sealing block 140, as shown in the attached figure. Figure 6As shown, this is equivalent to extending the circumferential part of the extrusion body 1421. After the sealing block 140 extends, the extension will fill the gap between the extrusion bodies 1421 of two adjacent sealing blocks 140. As can be seen from the figure, the extension and the extrusion body 1421 partially overlap in the radial direction. In this way, when the elastic sealing ring 120 is extruded, continuous and gapless extrusion can be applied to the elastic sealing ring 120 in the circumferential direction, thereby improving the sealing effect.

[0057] In this embodiment, since the outer surfaces of the extension and the adjacent sealing block 140 are radially staggered, with the extension located on the outer side and the extrusion body 1421 being relatively more inward, the extrusion force on the elastic sealing ring 120 will be different due to their relative positions. To reduce the potential sealing problems caused by the difference in extrusion force, the extension is generally required to be thin (not exceeding 2mm) in actual installation.

[0058] It should be noted that in this embodiment, the extension and the extrusion body 1421 can be set as separate parts, and then assembled and fixedly connected as a whole (generally applicable when the sealing block 140 is a metal part). Alternatively, the extension and the extrusion body 1421 can be set as a whole structure, and directly molded as a whole during injection molding (generally applicable when the sealing block 140 is a plastic part).

[0059] Furthermore, in this embodiment, the length of the extension protruding from the circumferential sidewall of the extrusion body 1421 is not specifically limited, as long as it can fill the gap between two adjacent extrusion bodies 1421 after extension. Of course, it cannot be too long. As mentioned above, the extension in this embodiment is a thin part. When the length of the extension is too long, the strength of the protruding part may decrease (the torque is large). Therefore, the length of the extension is generally slightly greater than the gap between adjacent extrusion bodies 1421.

[0060] Second, see appendix. Figure 8-10The sealing block 140 includes a connecting part 141 and an arc-shaped pressing part 142. One inner end of the connecting part 141 forms the first end of the sealing block 140 and extends into the receiving cavity of the cover 110 and is connected to the driving part 131 of the driving mechanism 130. The arc-shaped pressing part 142 is located between the elastic sealing ring 120 and the cover 110. One outer end of the arc-shaped pressing part 142 forms the second end of the sealing block 140. The outer surface of the arc-shaped pressing part 142 is an arc surface around the axis of the cover 110. The arc-shaped extrusion part 142 includes an extrusion body 1421, a first protrusion 1425, and a second protrusion 1426. The first protrusion 1425 protrudes from the side wall of the extrusion body 1421 in a clockwise direction along the circumference of the cover 110 and forms a first gap with the bottom surface of the extrusion body 1421. The second protrusion 1426 protrudes from the side wall of the extrusion body 1421 in a counterclockwise direction along the circumference of the cover 110 and forms a second gap with the top surface of the extrusion body 1421. The first protrusion 1425 extends into the second gap of the adjacent arc-shaped extrusion part 142, and the second protrusion 1426 extends into the first gap of the adjacent arc-shaped extrusion part 142, so that the first protrusion 1425 and the adjacent second protrusion 1426 are staggered vertically along the axial direction of the cover 110.

[0061] In this embodiment, the first protrusion 1425 and the second protrusion 1426 are staggered vertically along the axial direction of the cover 110, so that when the sealing block 140 is extended, see attached figure. Figure 9 At this time, the first protrusion 1425 and the second protrusion 1426 are always partially intersected in the axial direction, and there will be no gap in the circumferential direction between adjacent sealing blocks 140, thereby improving the sealing effect.

[0062] It should be noted that in this embodiment, the first protrusion 1425 and the second protrusion 1426 are staggered vertically along the axis. In actual installation, this ensures that the outer surfaces of multiple sealing blocks 140 are on the same circumference, which makes the compression effect on the elastic sealing ring 120 more uniform and ensures a better sealing effect.

[0063] To ensure a better sealing effect, in actual installation, the two sides of the compression body 1421 can be further configured with interlocking comb-like protrusions. This can generate a better compression effect on the elastic sealing ring 120, thereby achieving a better sealing effect.

[0064] As one embodiment of this utility model, see the appendix. Figure 2The cover 110 includes an inner cover 111 and an outer cover 112. The outer cover 112 and the inner cover 111 are fastened together to form a receiving cavity. The driving mechanism 130 includes a driving part 131 and an operating part 132. The driving part 131 is located in the receiving cavity. The first end of the operating part 132 is connected to the driving part 131, and the second end of the operating part 132 extends out of the cover 110. A guide groove 1113 communicating with the receiving cavity is formed on the side wall of the cover 110. The guide groove 1113 is opposite to the elastic sealing ring 120. The sealing block 140 is slidably disposed in the guide groove 1113. The first end of the sealing block 140 is located in the receiving cavity and connected to the driving part 131. The second end of the sealing block 140 is located outside the receiving cavity. By operating the operating part 132, the driving part 131 can be driven to rotate, thereby driving multiple sealing blocks 140 to move synchronously along the radial extension and retraction of the cover 110.

[0065] In this embodiment, the drive mechanism 130 drives the synchronous movement of multiple sealing blocks 140 through rotational motion. The rotational motion can reduce the volume of the components and improve the compactness of the pot lid structure. Moreover, by setting up a receiving cavity, the drive part 131 is hidden in the receiving cavity during actual use and cannot be seen from the outside, which can reduce the user's fear.

[0066] In this embodiment, the guide groove 1113 can guide the radial extension and retraction of the sealing block 140, thereby improving the stability of the extension and retraction movement of the sealing block 140.

[0067] In this embodiment, the drive unit 131 rotates around the axis of the lid 110, which improves the overall stability of the lid during use. In actual installation, the drive unit 131 can be configured as shown in the attached figure. Figure 7 The structure of the drive disk shown can, of course, be set to other irregular structures.

[0068] As one embodiment of this utility model, see the appendix. Figure 2 , 7The inner cover 111 includes a support member and a bottom connector. The bottom connector is fixed to the bottom of the support member. The bottom connector and the outer cover 112 are connected by a connector. The support member includes a support plate 1111 and an annular plate 1112. The annular plate 1112 protrudes from the top surface of the support plate 1111. The guide groove 1113 is formed on the side wall of the annular plate 1112. The top surface of the support plate 1111 has a guide boss 1114 corresponding to the guide groove 1113. The bottom of the sealing block 140 has a guide groove 1424 that cooperates with the guide boss 1114. The sealing block 140 is slidably connected to the guide boss 1114 through the guide groove 1424.

[0069] In this embodiment, the inner cover 111 and the outer cover 112 are connected by a bottom connector. The support plate 1111 on the support member forms the bottom wall of the receiving cavity, and the annular plate 1112 forms the side wall of the receiving cavity. In actual design, the bottom connector is connected to the bottom of the support plate 1111 and is connected to the outer cover 112 from the center of the receiving cavity.

[0070] From Figure 2 As can be seen, a portion (connecting part 141) of the sealing block 140 of this utility model is disposed inside the receiving cavity, and a portion (arc-shaped extrusion part 142) is disposed outside the receiving cavity. A guide boss 1114 that cooperates with the arc-shaped extrusion part 142 is also provided on the top of the support plate 1111, and a guide groove 1424 is provided on the bottom of the arc-shaped extrusion part 142. This structure, in conjunction with the guide groove 1113, can further improve the stability of the radial extension and retraction movement of the sealing block 140.

[0071] In one embodiment of this utility model, the outer cover 112 includes an outer panel 1121, a mating portion 1122, and a limiting portion 1123. The mating portion 1122 is disposed at the bottom of the outer panel 1121 and connected to the bottom connector. The limiting portion 1123 protrudes circumferentially from the outer side wall of the outer panel 1121 and is used to cooperate with the top of the pot body 200 to limit the relative position of the pot cover and the pot body 200. The elastic sealing ring 120 includes a top sealing ring 121 and a middle sealing ring 122. The top sealing ring 121 is sleeved on the outside of the outer panel 1121, and the top end of the top sealing ring 121 abuts against the bottom surface of the limiting part 1123. The bottom sealing ring 123 is fixed between the support plate 1111 and the bottom connector. The middle sealing ring 122 is opposite to the second end of the sealing block 140. The second end of the sealing block 140 can squeeze the middle sealing ring 122 and cause it to produce the elastic deformation.

[0072] In this embodiment, the elastic sealing ring 120 is functionally divided into three parts. The top sealing ring 121 is used to cooperate with the outer cover 112, and it is sleeved on the outer side wall of the outer panel 1121. The top of the top sealing ring 121 abuts against the bottom surface of the limiting part 1123, thus limiting the upper limit position of the elastic sealing ring 120. Furthermore, in this embodiment, the limiting part 1123 on the outer cover 112 also has a limiting function in cooperating with the pot body 200. (See attached diagram.) Figure 2 , 11 12. When the lid is placed on the pot body 200, the inner lid 111 and the elastic sealing ring 120 extend into the pot body 200, and the bottom surface of the limiting part 1123 on the outer lid 112 abuts against the top of the pot body 200, limiting the position of the lid on the pot body 200.

[0073] In this embodiment, the bottom end of the elastic sealing ring 120 is fixed, and the upper limit position of the top end is limited. In use, when the elastic sealing ring 120 is in its natural state, the outer wall of the middle sealing ring 122 can be set to be concave inwards into the outer walls of the top sealing ring 121 and the bottom sealing ring 123, or flush with the outer walls of the top sealing ring 121 and the bottom sealing ring 123. When the sealing block 140 extends outwards under the drive of the driving mechanism 130, the sealing block 140 will squeeze the middle sealing ring 122. The middle sealing ring 122 portion of the elastic sealing ring 120, under the squeezing action of the sealing block 140, will undergo elastic deformation and bulge outwards. Since the bottom of the elastic sealing ring 120 is fixed, the position of the elastic sealing ring 120 will not change during the elastic deformation process. Furthermore, the top of the elastic sealing ring 120 is not fixed, which can compensate for the elastic deformation of the middle sealing ring 122 when the elastic sealing ring 120 undergoes elastic deformation. (See attached diagram.) Figure 2 , 3 This is a schematic diagram showing the state of the elastic sealing ring 120 after deformation, with the elastic sealing ring 120 protruding outward.

[0074] As one embodiment of this utility model, see the appendix. Figure 3The bottom connector includes a base plate 1116 and an edge ring plate 1117. The edge ring plate 1117 is located at the outer edge of the base plate 1116 and protrudes from the top surface of the base plate 1116. The top of the edge ring plate 1117 forms an outwardly folded flange 1118. The flange 1118 and the bottom surface of the support plate 1111 are opposite to each other. The support plate 1111 includes an annular protrusion 1115 protruding from the bottom surface of the support plate 1111. A gap matching the thickness of the elastic sealing ring 120 is formed between the outer wall of the protrusion 1115 and the inner wall of the edge ring plate 1117, between the flange 1118 and the bottom surface of the support plate 1111, and between the bottom surface of the protrusion 1115 and the top surface of the base plate 1116. The bottom sealing ring 123 is squeezed and fixed in the gap.

[0075] In this embodiment, a structure for fixing the bottom sealing ring 123 is formed between the bottom support member and the support plate 1111, see Appendix. Figure 3 The bottom sealing ring 123 forms a "Z"-shaped bending structure in the gap between the bottom support and the support plate 1111, which increases the compression base area between the bottom support and the support plate 1111 and the bottom sealing ring 123. In this way, the bottom sealing ring 123 can be fixed more firmly without the need for connecting parts.

[0076] In one embodiment of the present invention, the driving part 131 has a plurality of driving grooves 1311 extending circumferentially. The distance between each point on the driving groove 1311 and the axial direction of the driving part 131 gradually changes circumferentially. The first end of the sealing block 140 has a mating part 143, which is accommodated in the driving groove 1311. The sealing block 140 can extend and retract radially in the guide groove 1113 as the driving part 131 rotates.

[0077] In this embodiment, when the drive unit 131 rotates, the sealing block 140 is driven to slide radially through the interaction between the drive groove 1311 and the mating part 143 of the sealing block 140. The two opposite sides of the inner wall of the drive groove 1311 are used to push the sealing block 140 outward or pull it inward.

[0078] Of course, it is conceivable that this embodiment is only one embodiment of the drive mechanism 130. In actual design, other different drive forms can also be adopted. For example, a structure similar to a cam and spring can be set on the drive part 131.

[0079] The second aspect of this utility model discloses a pressure cooker, see appendix. Figure 11 , 12The container includes a lid and a body 200. The lid is a first-aspect lid. The inner wall of the body 200 has an annular inner boss 210 around the axis of the body 200. When the lid is placed on the body 200, the driving mechanism 130 can drive the second ends of the plurality of sealing blocks 140 to press the elastic sealing ring 120 outward and cause the elastic sealing ring 120 to elastically deform below the inner boss 210.

[0080] In this embodiment, the inner wall of the pot body 200 is provided with an inwardly protruding inner boss 210. The elastic sealing ring 120 will elastically deform outward to below the inner boss 210, as shown in the attached figure. Figure 12 As shown, the elastically deformable sealing ring 120 and the inner boss 210 cooperate with each other to form a circumferential sealing effect between the lid and the pot body 200.

[0081] Of course, it is conceivable that, in actual setup, the inner boss 210 structure inside the pot body 200 can also be set as a recessed structure. When in use, the deformed part of the elastic sealing ring 120 is inserted into the recessed structure to form a seal.

[0082] In the pot lid and pressure cooker provided by this utility model, after the pot lid is placed on the pot body 200, the driving mechanism 130 can drive the sealing block 140 to extend outwards, and the second end of the sealing block 140 will squeeze out the elastic sealing ring 120, so that the elastic sealing ring 120 cooperates with the protrusion or groove structure on the inner wall of the pot body 200, thereby locking the pot lid and the pot body 200 and sealing the gap between them through the elastic sealing ring 120, thereby achieving a high-pressure sealing effect and ensuring the stability of the gas pressure inside the pot when the pressure cooker heats the food.

[0083] The lid provided by this invention engages with the inner wall of the pot body 200 via a sealing block 140 and an elastic sealing ring 120. Compared with existing clamp-type and screw-on pressure cookers, this effectively reduces the complexity of the lid and the edge structure of the pot body 200, as well as the amount of material used, thereby reducing the manufacturing cost of the pressure cooker. Furthermore, since the sealing block 140 and the elastic sealing ring 120 extend radially in all directions, there is no need to control the relative rotation angle between the lid and the pot body 200 when using the lid provided by this invention. Compared with existing screw-on pressure cookers, this improves the convenience of using the pressure cooker and enhances the user experience.

[0084] Furthermore, the sealing block 140 and the corresponding transmission structure in the pot lid provided by this utility model are all located inside the pot lid, making the pot lid's appearance similar to that of an ordinary pot. Users are less likely to mistake the pot lid provided by this utility model, or the pressure cooker structure using this pot lid, for a dangerous pressure vessel, effectively preventing users from developing a fear of pressure cookers. Moreover, the pot lid provided by this utility model has a wide range of applications and can be adapted to some existing pot bodies 200 with bosses or grooves.

[0085] Finally, the sealing block 140 in the pot lid provided by this utility model has an extended design in the circumferential direction.

[0086] The extended portion of the sealing block 140 can ensure that there is no gap between adjacent sealing blocks 140 when the diameter of the sealing blocks 140 changes. In this way, the outer surfaces of multiple sealing blocks 140 form a closed structure in the circumferential direction. Thus, when the elastic sealing ring 120 is compressed, multiple sealing blocks 140 will apply pressure to the elastic sealing ring 120 in the circumferential direction, thereby improving the sealing effect.

[0087] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A pot lid, comprising a lid body (110) and an elastic sealing ring (120), the elastic sealing ring (120) being circumferentially sleeved on the lid body (110), the elastic sealing ring (120) being disposed within a pot body (200), characterized in that, The pot lid also includes a driving mechanism (130) and a plurality of sealing blocks (140). The plurality of sealing blocks (140) are circumferentially distributed around the axis of the lid body (110) and located inside the elastic sealing ring (120). The sealing blocks (140) are slidably disposed on the lid body (110) along the radial direction. The first end of the sealing block (140) is connected to the driving mechanism (130), and the second end of the sealing block (140) is opposite to the elastic sealing ring (120). The driving mechanism (130) can drive the second ends of the plurality of sealing blocks (140) to press the elastic sealing ring (120) outward and cause the elastic sealing ring (120) to undergo elastic deformation. The elastic deformation of the elastic sealing ring (120) is used to cooperate with the inner wall of the pot body (200) to form a seal. The outer surfaces of adjacent sealing blocks (140) are intersected circumferentially on the lid body (110).

2. The pot lid as described in claim 1, characterized in that, The cover (110) includes an inner cover (111) and an outer cover (112). The outer cover (112) and the inner cover (111) are fastened together to form a receiving cavity. The driving mechanism (130) includes a driving part (131) and an operating part (132). The driving part (131) is located in the receiving cavity. The first end of the operating part (132) is connected to the driving part (131), and the second end of the operating part (132) extends out of the cover (110). A guide groove communicating with the receiving cavity is formed on the side wall of the cover (110). (1113), the guide groove (1113) is opposite to the elastic sealing ring (120), the sealing block (140) is slidably disposed in the guide groove (1113), the first end of the sealing block (140) is located in the receiving cavity and connected to the driving part (131), the second end of the sealing block (140) is located outside the receiving cavity, and the operation part (132) can be operated to drive the driving part (131) to rotate, thereby driving multiple sealing blocks (140) to move synchronously along the radial extension and retraction of the cover (110).

3. The pot lid as described in claim 2, characterized in that, The inner cover (111) includes a support member and a bottom connector. The bottom connector is fixed to the bottom of the support member. The bottom connector and the outer cover (112) are connected by a connector. The support member includes a support plate (1111) and an annular plate (1112). The annular plate (1112) protrudes from the top surface of the support plate (1111). The guide groove (1113) is formed on the side wall of the annular plate (1112). The top surface of the support plate (1111) has a guide boss (1114) corresponding to the guide groove (1113). The bottom of the sealing block (140) has a guide groove (1424) that cooperates with the guide boss (1114). The sealing block (140) is slidably connected to the guide boss (1114) through the guide groove (1424).

4. The pot lid as described in claim 3, characterized in that, The outer cover (112) includes an outer panel (1121), a mating part (1122), and a limiting part (1123). The mating part (1122) is disposed at the bottom of the outer panel (1121) and connected to the bottom connector. The limiting part (1123) protrudes circumferentially from the outer side wall of the outer panel (1121) and is used to cooperate with the top of the pot body (200) to limit the relative position of the pot cover and the pot body (200). The elastic sealing ring (120) includes a top sealing ring (121) and a middle sealing ring (122). The top sealing ring (121) is sleeved on the outer side of the outer panel (1121). The top end of the top sealing ring (121) abuts against the bottom surface of the limiting part (1123). The bottom sealing ring (123) is fixed between the support plate (1111) and the bottom connector. The middle sealing ring (122) is opposite to the second end of the sealing block (140). The second end of the sealing block (140) can squeeze the middle sealing ring (122) and cause it to produce the elastic deformation.

5. The pot lid as described in claim 4, characterized in that, The bottom connector includes a base plate (1116) and an edge ring plate (1117). The edge ring plate (1117) is located at the outer edge of the base plate (1116) and protrudes from the top surface of the base plate (1116). The top of the edge ring plate (1117) forms an outwardly folded flange (1118). The flange (1118) is opposite to the bottom surface of the support plate (1111). The support plate (1111) includes a flange protruding from the bottom surface of the support plate (1111). 111) An annular protrusion (1115) on the bottom surface, the outer wall of the protrusion (1115) and the inner wall of the edge ring plate (1117), the flange (1118) and the bottom surface of the support plate (1111), and the bottom surface of the protrusion (1115) and the top surface of the bottom plate (1116) form a gap that matches the thickness of the elastic sealing ring (120), and the bottom sealing ring (123) is squeezed and fixed in the gap.

6. The pot lid as described in claim 2, characterized in that, The drive unit (131) has a plurality of drive grooves (1311) extending circumferentially. The distance between each point on the drive groove (1311) and the axial direction of the drive unit (131) gradually changes circumferentially. The first end of the sealing block (140) has a mating part (143), which is accommodated in the drive groove (1311). The sealing block (140) can extend and retract radially in the guide groove (1113) as the drive unit (131) rotates.

7. The pot lid as described in any one of claims 1 to 6, characterized in that, The sealing block (140) includes a connecting part (141) and an arc-shaped pressing part (142). The inner end of the connecting part (141) forms the first end of the sealing block (140) and extends into the receiving cavity of the cover (110) and is connected to the driving part (131) of the driving mechanism (130). The arc-shaped pressing part (142) is located between the elastic sealing ring (120) and the cover (110). The outer end of the arc-shaped pressing part (142) forms the second end of the sealing block (140). The outer surface of the arc-shaped pressing part (142) is an arc surface around the axis of the cover (110).

8. The pot lid as described in claim 7, characterized in that, The arc-shaped extrusion part (142) includes an extrusion body (1421) and an extension. The extension is connected to the extrusion body (1421). The extension includes a side extension (1422) that fits against the outer arc surface of the extrusion body (1421) and a top extension (1423) that fits against the top surface of the extrusion body (1421). The side extension (1422) and the top extension (1423) are connected. One end of the side extension (1422) protrudes circumferentially from the side wall of the extrusion body (1421) along the cover (110) and is radially offset from the outer surface of the adjacent sealing block (140) along the cover (110).

9. The pot lid as described in claim 7, characterized in that, The arc-shaped extrusion part (142) includes an extrusion body (1421), a first protrusion (1425), and a second protrusion (1426). The first protrusion (1425) protrudes from the side wall of the extrusion body (1421) in a clockwise direction along the circumference of the cover (110) and forms a first gap with the bottom surface of the extrusion body (1421). The second protrusion (1426) protrudes from the side wall of the cover (110) in a counterclockwise direction along the circumference of the cover (110). The sidewall of the extrusion body (1421) is extruded and forms a second gap with the top surface of the extrusion body (1421). The first protrusion (1425) extends into the second gap of the adjacent arcuate extrusion part (142), and the second protrusion (1426) extends into the first gap of the adjacent arcuate extrusion part (142), so as to form a structure in which the first protrusion (1425) and the adjacent second protrusion (1426) are staggered along the axial direction of the cover (110).

10. A pressure cooker, comprising a lid and a pot body (200), characterized in that, The pot lid is the pot lid according to any one of claims 1 to 9. The inner wall of the pot body (200) has an annular inner boss (210) around the axis of the pot body (200). When the pot lid is placed on the pot body (200), the driving mechanism (130) can drive the second ends of the plurality of sealing blocks (140) to press the elastic sealing ring (120) outward and cause the elastic sealing ring (120) to elastically deform below the inner boss (210).

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