Pot lid and pressure cooker

Abstract

The present invention provides a pot cover and a pressure cooker, wherein the pot cover comprises a cover body and an elastic sealing ring, wherein the elastic sealing ring is sleeved on the cover body along the circumferential direction, and the pot cover further comprises a driving mechanism and a plurality of movable blocks, wherein the first ends of the plurality of movable blocks are located inside the cover body and connected to the driving mechanism, and the driving mechanism can drive the plurality of movable blocks to extend outward from the cover body so that the second ends of the plurality of movable blocks squeeze the elastic sealing ring outward. The pot cover provided by the present invention has a low structural complexity, can reduce the manufacturing cost of the pressure cooker, and does not need to control the relative rotation angle between the pot cover and the pot body, and can improve the convenience of the user in using the pressure cooker and enhance the user experience compared with the existing screw-on pressure cooker. In addition, the appearance of the pot cover is similar to that of an ordinary cooker, and it is not easy for the user to identify the pot cover provided by the present invention and the pressure cooker structure using the pot cover as a dangerous pressure vessel, which can effectively prevent the user from having a fear of the pressure cooker.

Description

Technical Field

[0001] The invention relates to the field of kitchenware, in particular to a pot cover and a pressure cooker comprising the pot cover. Background Art

[0002] Pressure cookers are popular among consumers because of their energy-saving, time-saving and multi-cooking functions. Pressure cookers use the physical phenomenon that the boiling point of liquid increases under higher air pressure to exert pressure on water, allowing the water to reach a higher temperature without boiling, thereby speeding up the efficiency of stewing food.

[0003] In the existing pressure cooker structure, the pot cover and the pot body are generally locked by clamps or teeth. Among them, the clamp-type pressure cooker uses a driving member on the pot cover to move the clamp inward and outward, and locks the pot cover and the pot body by the clamp to form a closed state in the pot. By using a thicker metal clamp, the increased pressure in the pot can be withstood; the screw-on pressure cooker distributes several teeth on the pot body and the pot cover, and the teeth on the pot cover overlap with the teeth on the pot body by rotating the pot cover to achieve locking of the pot cover and the pot body.

[0004] However, since the clamp of the clamp-type pressure cooker needs to withstand a large pressure, the clamp usually adopts a thicker metal structure, and the manufacturing process of the clamp is complicated, resulting in a high manufacturing cost of the clamp-type pressure cooker; and the screw-on pressure cooker needs to be aligned when in use, resulting in the screw-on pressure cooker being inconvenient to operate and difficult to align and screw. In addition, the current pressure cooker is usually intuitively identified by users as a more dangerous pressure vessel in terms of appearance, and many users have a fear of pressure vessels.

[0005] Therefore, how to provide a pressure cooker structure with a simple structure, convenient operation, and an appearance similar to that of ordinary cookers has become a technical problem to be solved urgently in the field. Summary of the invention

[0006] The present invention aims to solve one of the technical problems in the related art to a certain extent. To this end, the present invention provides a pot cover and a pressure cooker including the pot cover, the pot cover has a low structural complexity, can reduce the manufacturing cost of the pressure cooker, is easy to use, and the appearance of the pot cover is similar to that of an ordinary pot, which can effectively prevent users from having a fear of the pressure cooker.

[0007] To achieve the above-mentioned purpose, as one aspect of the present invention, there is provided a pot cover, comprising a cover body and an elastic sealing ring, wherein the elastic sealing ring is circumferentially sleeved on the cover body, the pot cover also comprises a driving mechanism and a plurality of movable blocks, the first ends of the plurality of movable blocks are located inside the cover body and connected to the driving mechanism, and the driving mechanism can drive the plurality of movable blocks to extend to the outside of the cover body so that the second ends of the plurality of movable blocks squeeze the elastic sealing ring outward.

[0008] Optionally, the movable block includes a connecting portion and an arc-shaped contact portion connected in sequence from the first end to the second end, the connecting portion can enter and exit the cover body radially, the arc-shaped contact portion extends around the axis of the cover body and is located between the cover body and the elastic sealing ring.

[0009] Optionally, the cover body has a drive accommodating cavity inside, and the cover body has a plurality of avoidance openings corresponding to the position of the elastic sealing ring on the circumferential side surface, the driving mechanism includes a rotating disk movably arranged in the drive accommodating cavity, the rotating disk can rotate around the axis of the cover body, the rotating disk has a plurality of driving grooves extending along the circumferential direction, the distance between each point on the driving groove and the axial direction of the rotating disk gradually changes along the circumferential direction, the first end of the movable block has a matching portion, the matching portion is accommodated in the driving groove, and the movable block can move in and out of the avoidance opening radially as the rotating disk rotates.

[0010] Optionally, the driving mechanism further comprises a handle, which is movably arranged on the top of the cover body and can rotate around the axis of the cover body, and the handle is fixedly connected to the rotating disk.

[0011] Optionally, the cover body includes a top cover and a base, and the drive accommodating cavity is formed between the top cover and the base.

[0012] Optionally, the base has a plurality of guide blocks on its surface facing the top cover, the movable block has at least one guide groove, the guide groove extends along the direction in which the movable block enters and exits the avoidance opening, and the guide block is accommodated in the guide groove.

[0013] Optionally, the cover body includes a top cover and a base, the base includes a lower shell, a reinforcement ring and a connecting tube, the top end of the connecting tube is connected to the top cover, the bottom end of the connecting tube is fixedly connected to the reinforcement ring, the reinforcement ring is fixedly arranged on the side of the lower shell facing the top cover, the elastic sealing ring is sleeved on the outside of the top cover and the reinforcement ring, and a plurality of avoidance openings are formed in the connecting tube.

[0014] Optionally, the driving mechanism also includes a matching column, the cover body includes a top cover and a base, the top cover includes an upper shell and a rotating shaft cylinder connected to the bottom of the upper shell, the upper shell is fixedly connected to the base, the bottom of the handle is fixedly connected to the matching column, the matching column is arranged in the rotating shaft cylinder, the matching column can rotate around the axis of the cover body and can fix the axial position of the handle; the handle is fixedly connected to the rotating disk through a fixing member passing through the upper shell.

[0015] Optionally, the outer surface of the mating column has a positioning groove extending around the mating column, and the inner wall of the rotating shaft tube has a positioning boss extending around the axis of the cover body, and the positioning boss is accommodated in the positioning groove to fix the axial position of the handle.

[0016] Optionally, a rotation groove is formed at the top of the upper shell, and the handle is accommodated in the rotation groove. The bottom of the rotation groove is formed with a plurality of first arc-shaped avoidance grooves extending to the bottom of the upper shell. The first arc-shaped avoidance grooves extend around the axis of the cover body, and the handle is fixedly connected to the rotating disk by a fixing member passing through the first arc-shaped avoidance groove.

[0017] Optionally, the handle includes a torsion shell and a torsion member, the torsion shell is accommodated in the rotating groove, the torsion member includes a top sealing portion and an axis rod connected to each other, the top sealing portion seals the top opening of the torsion shell, and the bottom end of the axis rod passes through the bottom wall of the torsion shell and is fixedly connected to the matching column in the rotating shaft cylinder.

[0018] Optionally, the top cover further includes a reinforcement layer, and the reinforcement layer is attached and fixed to the top surface of the upper shell.

[0019] Optionally, the reinforcement layer is made of metal material.

[0020] Optionally, the base includes a lower shell, a reinforcement ring and a connecting seat, the connecting seat includes an installation ring and a limiting cylinder that are connected to each other, the side of the installation ring facing away from the limiting cylinder is fixedly connected to the top cover, the side of the limiting cylinder facing away from the installation ring is fixedly connected to the lower shell, the reinforcement ring is fixedly arranged on the side of the lower shell facing the installation ring, the elastic sealing ring is sleeved on the outside of the installation ring and the reinforcement ring, and a plurality of avoidance openings are formed in the limiting cylinder.

[0021] Optionally, the connecting seat further includes a mounting plate, the mounting plate is connected to the bottom of the mounting ring, and the mounting plate is fixedly connected to the lower shell.

[0022] Optionally, the outer edge of the lower shell is covered on the outer side of the reinforcement ring, and the elastic sealing ring is fitted with the outer side of the lower shell.

[0023] Optionally, the pot cover also includes an air guide seat, the interior of the air guide seat has an air guide cavity, the bottom of the air guide cavity is connected to the outside of the base through a through hole on the lower shell, the top of the air guide seat has an air outlet, the top cover has an air outlet hole, and the air outlet is connected to the outside of the top cover through the air outlet hole.

[0024] Optionally, the top cover also has an air guide tube, one end of which is connected to the air outlet, and the other end of the air guide tube is connected to the air outlet tube in a sleeve-like manner; at least one second arc-shaped avoidance groove extending around the axis of the cover body is formed in the rotating disk, the second arc-shaped avoidance groove extends around the axis of the cover body, and the air guide tube and the air outlet tube are located in the second arc-shaped avoidance groove.

[0025] Optionally, the air guide seat is arranged around the outer side of the rotating shaft tube.

[0026] Optionally, the air guide seat is made of a flexible material, and the pot cover also includes a pressing block and a downward pressing elastic member, the pressing block surrounds the outside of the rotating shaft tube and is located between the air guide seat and the top cover, and the downward pressing elastic member drives the pressing block to move away from the top cover through elastic force to press the air guide seat tightly against the base.

[0027] Optionally, the downward-pressing elastic member is a spring, and the downward-pressing elastic member is wound around the outer side of the rotating shaft tube.

[0028] Optionally, the handle is provided with a stop groove, and the pot cover also includes a pressure measuring valve and a stop pin, the pressure measuring valve is arranged on the base, the stop pin is movably arranged at the bottom of the rotating groove, and the nail rod of the stop pin passes through the top cover, and the valve block of the pressure measuring valve can push up the nail rod of the stop pin when the air pressure on the outside of the bottom of the base is greater than the air pressure on the outside of the top cover, and make the nail head of the stop pin enter the stop groove of the handle.

[0029] Optionally, the pot cover also includes a protective cover, which is fixedly arranged on the side of the lower shell body facing away from the top cover, and has a plurality of connecting holes. The connecting holes and the plurality of through holes on the lower shell body connect the outer space of the protective cover with the air guide cavity of the air guide seat.

[0030] Optionally, the elastic sealing ring includes an upper fixing ring, a contact ring and a lower fixing ring connected in sequence, the upper fixing ring and the lower fixing ring are both in contact with the side of the cover body, the position of the contact ring corresponds to the second end of the plurality of movable blocks, and the outer diameter of the contact ring in a non-stressed state is smaller than the outer diameters of the upper fixing ring and the lower fixing ring.

[0031] Optionally, the elastic sealing ring further includes a fixing portion, the fixing portion is connected to an end of the lower fixing ring facing away from the upper fixing ring, and the fixing portion is fixedly disposed inside the cover body to fix the elastic sealing ring on the cover body.

[0032] Optionally, the pot cover further includes a fastening ring, which is sleeved on the outer side of the lower fixing ring to fix the lower fixing ring on the cover body.

[0033] Optionally, the elastic sealing ring includes an upper fixing ring, a contact ring and a fixing portion which are connected in sequence, the upper fixing ring contacts the side of the cover body, the fixing portion is fixedly arranged inside the cover body, the position of the contact ring corresponds to the second ends of the plurality of movable blocks, and the outer diameter of the contact ring in a non-stressed state is greater than the outer diameters of the upper fixing ring and the fixing portion.

[0034] Optionally, the outer diameter of the contact ring increases first and then decreases along the axial direction of the pot cover, and the outer surface of the contact ring is provided with at least one annular sealing ridge, and the annular sealing ridge extends around the axis of the pot cover.

[0035] Optionally, the cross-sectional shape of the contact ring along the radial direction of the pot cover is an arc shape.

[0036] Optionally, the fixing portion is clamped between the lower shell and the reinforcement ring.

[0037] Optionally, the fixing portion includes a first connection portion, a second connection portion and a third connection portion which are connected in sequence, wherein the outer edge of the first connection portion is connected to the contact ring, the inner edge of the first connection portion extends radially, the third connection portion is clamped between the bottom surface of the reinforcement ring and the lower shell, and the second connection portion is connected between the inner edge of the first connection portion and the outer edge of the third connection portion.

[0038] As a second aspect of the present invention, a pressure cooker is provided, comprising a pot body and a pot cover provided by an embodiment of the present invention, wherein the inner wall of the pot body is provided with an inner boss extending around the axis of the pot body, and the plurality of movable blocks of the pot cover can squeeze the elastic sealing ring of the pot cover to be located below the inner boss when the pot cover is placed on the pot body.

[0039] Optionally, an inner groove extending around the axis of the pot body is provided on the inner wall of the pot body, and the inner boss is located on a side of the inner groove facing the top opening of the pot body.

[0040] In the pot cover and pressure cooker provided by the present invention, after the pot cover is closed on the pot body, the driving mechanism can drive the movable block to extend outward, and make the second end of the movable block extrude the elastic sealing ring, so that the elastic sealing ring cooperates with the boss or groove structure on the inner wall of the pot body, so as to lock the pot cover and the pot body and seal the gap between the two by the elastic sealing ring, thereby achieving a high-pressure sealing effect, and ensuring the stability of the gas pressure in the pot when the pressure cooker heats food.

[0041] The pot cover provided by the present invention is engaged with the inner wall of the pot body by extending the movable block and the elastic sealing ring, which can effectively reduce the complexity of the pot cover and the pot body edge structure and the material consumption compared with the existing clamp-type pressure cooker, thereby reducing the manufacturing cost of the pressure cooker. In addition, the movable block and the elastic sealing ring extend radially in all directions, so when using the pot cover provided by the present invention, it is not necessary to control the relative rotation angle between the pot cover and the pot body, which can improve the convenience of users using the pressure cooker and enhance the user experience compared with the existing screw-on pressure cooker.

[0042] In addition, the pot cover structure provided by the present invention is quite different from the existing pressure cooker structure. The movable block and the corresponding transmission structure are both arranged inside the pot cover, so that the pot cover looks similar to an ordinary pot. It is not easy for users to identify the pot cover provided by the present invention and the pressure cooker structure with the pot cover as a dangerous pressure vessel, which can effectively prevent users from having a fear of pressure cookers. In addition, the pot cover provided by the present invention has a wide range of applications and can be adapted to some existing pot bodies with bosses or grooves. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention will be further described below in conjunction with the accompanying drawings:

[0044] Figure 1 is a schematic diagram of the structure of a pot cover provided by an embodiment of the present invention when the movable block is in a retracted state;

[0045] Figure 2 is a schematic diagram of the structure of a pot cover provided by an embodiment of the present invention when the movable block is extended;

[0046] Figure 3 is a schematic diagram of the structure of a pot cover provided by an embodiment of the present invention when the movable block is in a retracted state;

[0047] Figure 4 is a schematic diagram of the structure of a pot cover provided by an embodiment of the present invention when the movable block is extended;

[0048] Figure 5 is a schematic diagram of the structure of a pot cover provided by an embodiment of the present invention when the movable block is in a retracted state;

[0049] Figure 6 is a schematic diagram of the structure of a pot cover provided by an embodiment of the present invention when the movable block is extended;

[0050] Figure 7 is a schematic structural diagram of a base in a pot cover provided by an embodiment of the present invention;

[0051] Figure 8 Schematic diagram of the structure of the elastic sealing ring in the pot cover provided by the embodiment of the present invention;

[0052] Fig. 9 is a schematic structural diagram of a pressure cooker in an unlocked state provided by an embodiment of the present invention;

[0053] Fig.10 is a schematic structural diagram of a pressure cooker in a locked state provided by an embodiment of the present invention;

[0054] Fig.11 is a schematic structural diagram of a pressure cooker in a locked state provided by an embodiment of the present invention;

[0055] Fig.12 is a partial structural schematic diagram of a pressure cooker provided by an embodiment of the present invention;

[0056] Fig.13 is a partial structural schematic diagram of a pressure cooker provided by an embodiment of the present invention;

[0057] Fig.14 is a schematic structural diagram of a pot cover provided by an embodiment of the present invention;

[0058] Fig.15 yes Fig.14 Schematic diagram of the partial structure of the middle pot cover;

[0059] Fig.16 is a schematic structural diagram of a pressure cooker provided by an embodiment of the present invention;

[0060] Fig.17 It is a structural schematic diagram of a base in a pressure cooker provided in an embodiment of the present invention.

[0061] Description of reference numerals:

[0062] 100, cover body; 101, avoidance port; 110, top cover; 111, upper shell; 112, shaft cylinder; 113, reinforcement layer; 114, air outlet; 115, air guide cylinder; 120, base; 121, lower shell; 122, reinforcement ring; 123, connecting seat; 123a, mounting ring; 123b, limiting cylinder; 123c, mounting plate; 124, connecting cylinder; 125, guide block; 200, elastic sealing ring; 210, upper fixing ring; 220, contact ring; 221, matching groove; 222, annular sealing ridge; 230, lower fixing ring; 240, fixing part; 241, first connecting part; 242, second connecting part; 243, third connecting part; 250, fastening ring; 300, driving mechanism; 310, rotating disk; 311, driving groove; 312, second arc-shaped avoidance groove; 320, handle; 321, torsion shell; 322, torsion member; 322a, top sealing part; 322b, shaft; 323, stop groove; 330, matching column; 331, positioning groove; 400, movable block; 410, connecting part; 420, arc-shaped contact part; 440, matching part; 510, air guide seat; 511, air guide cavity; 512, air outlet tube; 520, pressure block; 530, downward pressure elastic member; 610, pressure measuring valve; 620, stop pin; 710, protective cover; 720, fastener; 711, connecting hole; 10, pot body; 11, inner boss; 12, inner groove. DETAILED DESCRIPTION

[0063] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments in the implementation manner are intended to be used to explain the present invention and should not be construed as limiting the present invention.

[0064] References to "one embodiment" or "example" or "example" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment disclosed herein. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0065] In order to solve the above technical problems, as one aspect of the present invention, a pot cover is provided. Figure 1 , Figure 2As shown, the pot cover includes a cover body 100 and an elastic sealing ring 200, the elastic sealing ring 200 is circumferentially sleeved on the cover body 100, the pot cover also includes a driving mechanism 300 and a plurality of movable blocks 400, the first ends (i.e., the inner ends) of the plurality of movable blocks 400 are located inside the cover body 100 and connected to the driving mechanism 300, the driving mechanism 300 can drive the plurality of movable blocks 400 to extend outward from the cover body 100, so that the second ends (i.e., the outer ends) of the plurality of movable blocks 400 squeeze the elastic sealing ring 200 outward.

[0066] like Figures 9 to 11 As shown, it can be understood that the pot cover provided by the present invention can be used to cooperate with the pot body 10 having a boss (i.e., the inner boss 11 shown in the figure) or a groove (i.e., the inner groove 12 shown in the figure) structure to achieve a high-pressure sealing function. After the pot cover provided by the present invention is closed on the pot body 10, the driving mechanism 300 can drive the movable block 400 to extend outward, and make the second end of the movable block 400 extrude the elastic sealing ring 200, so that the elastic sealing ring 200 cooperates with the boss or groove structure on the inner wall of the pot body 10, so as to lock the pot cover and the pot body 10 and seal the gap between the two through the elastic sealing ring 200, thereby achieving a high-pressure sealing effect, and ensuring the stability of the gas pressure in the pot when the pressure cooker heats food.

[0067] The pot cover provided by the present invention is engaged with the inner wall of the pot body 10 by extending the movable block 400 and the elastic sealing ring 200, which can effectively reduce the complexity of the pot cover and the edge structure of the pot body 10 and the amount of materials used compared with the existing clamp-type pressure cooker, thereby reducing the manufacturing cost of the pressure cooker. In addition, the movable block 400 and the elastic sealing ring 200 extend radially in all directions, so when using the pot cover provided by the present invention, there is no need to control the relative rotation angle between the pot cover and the pot body 10, which can improve the convenience of users using the pressure cooker and enhance the user experience compared with the existing screw-on pressure cooker.

[0068] In addition, the pot cover structure provided by the present invention is quite different from the existing pressure cooker structure. The movable block 400 and the corresponding transmission structure are both arranged inside the pot cover, so that the pot cover looks similar to an ordinary pot. It is not easy for users to identify the pot cover provided by the present invention and the pressure cooker structure with the pot cover as a dangerous pressure vessel, which can effectively prevent users from having a fear of pressure cookers. In addition, the pot cover provided by the present invention has a wide range of applications and can be adapted to some existing pot bodies with bosses or grooves.

[0069] As a preferred embodiment of the present invention, Figure 1 , Figures 3 to 6As shown, the movable block 400 includes a connecting portion 410 and an arc-shaped contact portion 420 connected in sequence from the first end to the second end. The connecting portion 410 can enter and exit the cover body 100 radially. The arc-shaped contact portion 420 extends around the axis of the cover body 100 and is located between the cover body 100 and the elastic sealing ring 200.

[0070] In the embodiment of the present invention, the second end of the movable block 400 has an arc-shaped contact portion 420 that can extend to the outside of the pot cover, so that the elastic sealing ring 200 in the corresponding arc length area can be pushed out through the arc-shaped contact portion 420, thereby ensuring the length of the elastic sealing ring 200 engaging with the inner wall of the pot body 10, thereby ensuring the sealing performance of the pressure cooker.

[0071] As an optional embodiment of the present invention, Figure 7 As shown, the cover body 100 has a driving accommodating cavity inside, and the side surface of the cover body 100 along the circumferential direction has a plurality of avoidance openings 101 corresponding to the positions of the elastic sealing rings 200, as shown in FIG. Figures 1 to 6 As shown, the driving mechanism 300 includes a rotating disk 310 movably disposed in the driving accommodating cavity, and the rotating disk 310 can rotate around the axis of the cover body 100, as shown in FIG. Figures 3 to 6 As shown, the rotating disk 310 has a plurality of driving grooves 311 extending in the circumferential direction, and the distance between each point on the driving groove 311 and the axial direction of the rotating disk 310 gradually changes in the circumferential direction. The first end of the movable block 400 has a fitting portion 440, which is accommodated in the driving groove 311, and the movable block 400 can enter and exit the avoidance opening 101 radially as the rotating disk 310 rotates.

[0072] That is, in the embodiment of the present invention, the radially changing driving groove 311 drives the matching portion 440 at the first end of the movable block 400 to move radially, thereby driving the movable block 400 to move radially as a whole, thereby ejecting the surrounding elastic sealing rings 200.

[0073] Alternatively, if Figures 3 to 6 As shown, the driving groove 311 extends spirally around the axis of the rotating disk 310 .

[0074] In other embodiments of the present invention, the mating portion 440 may also be driven to move by other forms of transmission structures such as a linear motor, a cylinder, a lead screw nut, etc.

[0075] As an optional embodiment of the present invention, Figure 1 to Figure 2 , Figure 5 to Figure 6 As shown, the driving mechanism 300 further includes a handle 320 , which is movably disposed on the top of the cover body 100 and can rotate around the axis of the cover body 100 , and the handle 320 is fixedly connected to the rotating disk 310 .

[0076] That is, the handle 320 not only serves as a holding part of the pot cover, but also serves as a force-applying structure for the user. The user drives the rotating disk 310 to rotate by twisting the handle 320 , thereby controlling the movable block 400 to extend and retract into the pot cover.

[0077] As an optional embodiment of the present invention, Figure 1 to Figure 2 , Fig.14 As shown, the cover body 100 includes a top cover 110 and a base 120 , and a drive accommodating cavity is formed between the top cover 110 and the base 120 .

[0078] As a preferred embodiment of the present invention, Fig.17 As shown, the base 120 has a plurality of guide blocks 125 on its surface facing the top cover 110, and the movable block 400 has at least one guide groove, which extends along the direction in which the movable block 400 enters and exits the avoidance opening 101, and the guide block 125 is accommodated in the guide groove.

[0079] As a preferred embodiment of the present invention, the guide blocks 125 are arranged in pairs, and each pair of guide blocks 125 is accommodated in a pair of guide grooves at the bottom of each of the movable blocks 400 .

[0080] Alternatively, if Fig.17 As shown, the guide block 125 extends along the direction in which the corresponding movable block 400 enters and exits the avoidance opening 101 .

[0081] As an optional embodiment of the present invention, Figures 14 to 17 As shown, the base 120 includes a lower shell 121, a reinforcement ring 122 and a connecting tube 124, the top end of the connecting tube 124 is connected to the top cover 110, the bottom end of the connecting tube 124 is fixedly connected to the reinforcement ring 122, the reinforcement ring 122 is fixedly arranged on the side of the lower shell 121 facing the top cover 110, the elastic sealing ring 200 is sleeved on the outside of the top cover 110 and the reinforcement ring 122, and a plurality of the avoidance openings 101 are formed in the connecting tube 124.

[0082] Alternatively, if Fig.17 As shown, the reinforcement ring 122 and the connecting tube 124 are formed as one piece.

[0083] Alternatively, if Fig.17 As shown, the avoidance opening 101 is a notch formed at the top edge of the connecting tube 124 .

[0084] Alternatively, if Fig.14 As shown, the top cover 110 is fixedly connected to the lower shell 121 via a fastener 720 .

[0085] As a preferred embodiment of the present invention, Figure 1 to Figure 2As shown, the driving mechanism 300 also includes a matching column 330, the top cover 110 includes an upper shell 111 and a rotating shaft cylinder 112 connected to the bottom of the upper shell 111, the upper shell 111 is fixedly connected to the base 120, the bottom of the handle 320 is fixedly connected to the matching column 330, the matching column 330 is arranged in the rotating shaft cylinder 112, the matching column 330 can rotate around the axis of the cover body 100, and can fix the axial position of the handle 320; the handle 320 is fixedly connected to the rotating disk 310 through a fixing member passing through the upper shell 111.

[0086] In the embodiment of the present invention, the bottom of the handle 320 forms a rotational fit relationship with the rotating shaft tube 112 of the top cover 110 through the matching column 330, thereby ensuring the stability of the position of the rotation axis of the handle 320 and the rotating disk 310, thereby ensuring the uniformity of the extension amount of the multiple movable blocks 400 along the circumferential direction, and further ensuring the sealing performance of the pressure cooker.

[0087] As an optional embodiment of the present invention, Figure 2 As shown, the outer surface of the matching column 330 has a positioning groove 331 extending around the matching column 330, and the inner wall of the rotating shaft tube 112 has a positioning boss extending around the axis of the cover body 100. The positioning boss is accommodated in the positioning groove 331 to fix the axial position of the handle 320, thereby realizing the height positioning of the rotating disk 310.

[0088] As an optional embodiment of the present invention, Figure 1 to Figure 2 As shown, a rotating groove is formed at the top of the upper shell 111, and the handle 320 is accommodated in the rotating groove. A plurality of first arc-shaped avoidance grooves are formed at the bottom of the rotating groove and extend to the bottom of the upper shell 111. The first arc-shaped avoidance grooves extend around the axis of the cover body 100, and the handle 320 is fixedly connected to the rotating disk 310 by a fixing member passing through the first arc-shaped avoidance groove.

[0089] As an optional embodiment of the present invention, Figure 1 to Figure 2 As shown, the handle 320 includes a torsion shell 321 and a torsion member 322. The torsion shell 321 is accommodated in the rotation slot. Figure 1 As shown, the torsion member 322 includes a top sealing portion 322a and a shaft rod 322b that are interconnected. The top sealing portion 322a seals the top opening of the torsion shell 321, and the bottom end of the shaft rod 322b passes through the bottom wall of the torsion shell 321 and is fixedly connected to the matching column 330 in the rotating shaft cylinder 112.

[0090] As a preferred embodiment of the present invention, Figure 1 to Figure 2 As shown, the top cover 110 further includes a reinforcement layer 113, which is attached and fixed to the top surface of the upper shell 111, thereby ensuring the firmness of the outer surface of the pot cover and extending the life of the pot cover.

[0091] Optionally, the reinforcement layer 113 is made of metal material.

[0092] As an optional embodiment of the present invention, Figure 7 As shown, the base 120 includes a lower shell 121, a reinforcement ring 122 and a connecting seat 123, the connecting seat 123 includes a mounting ring 123a and a limiting cylinder 123b that are connected to each other, the side of the mounting ring 123a away from the limiting cylinder 123b is fixedly connected to the top cover 110, the side of the limiting cylinder 123b away from the mounting ring 123a is fixedly connected to the lower shell 121, the reinforcement ring 122 is fixedly arranged on the side of the lower shell 121 facing the mounting ring 123a, the elastic sealing ring 200 is sleeved on the outside of the mounting ring 123a and the reinforcement ring 122, and a plurality of avoidance openings 101 are formed in the limiting cylinder 123b.

[0093] As an optional embodiment of the present invention, Figure 7 As shown, the connection base 123 further includes a mounting plate 123 c , which is connected to the bottom of the mounting ring 123 a , and the mounting plate 123 c is fixedly connected to the lower shell 121 .

[0094] Optionally, the connection seat 123 is an integrally formed part (eg, a sheet metal part).

[0095] As an optional embodiment of the present invention, Figure 7 As shown, the outer edge of the lower shell 121 is covered on the outer side of the reinforcement ring 122 , and the elastic sealing ring 200 is in contact with the outer side of the lower shell 121 .

[0096] As an optional embodiment of the present invention, Figure 1 to Figure 2 As shown, the pot cover also includes an air guide seat 510, the interior of the air guide seat 510 is provided with an air guide cavity 511, the bottom of the air guide cavity 511 is connected with the outside of the base 120 through the through hole on the lower shell 121, the top of the air guide seat 510 is provided with an air outlet tube 512, and the top cover 110 has an air outlet hole 114, and the air outlet tube 512 is connected with the outside of the top cover 110 through the air outlet hole 114, so that after the pressure cooker is heated, the air can be released to the outside through the air guide cavity 511 and the air outlet hole 114 to release pressure.

[0097] As an optional embodiment of the present invention, Figure 2 As shown, the top cover 110 also has an air guide tube 115, one end of which is connected to the air outlet 114, and the other end of the air guide tube 115 is connected to the air outlet tube 512 in a sleeve-type manner; at least one second arc-shaped avoidance groove 312 extending around the axis of the cover body 100 is formed in the rotating disk 310, and the second arc-shaped avoidance groove 312 extends around the axis of the cover body 100, and the air guide tube 115 and the air outlet tube 512 are located in the second arc-shaped avoidance groove 312.

[0098] As an optional embodiment of the present invention, Figure 1 to Figure 2 As shown, the air guide seat 510 is disposed around the outer side of the rotating shaft tube 112 .

[0099] As an optional embodiment of the present invention, Figure 1 to Figure 2 As shown, the air guide seat 510 is made of a flexible material, and the pot cover also includes a pressing block 520 and a downward pressing elastic member 530. The pressing block 520 surrounds the outside of the rotating shaft tube 112 and is located between the air guide seat 510 and the top cover 110. The downward pressing elastic member 530 drives the pressing block 520 to move away from the top cover 110 through elastic force to press the air guide seat 510 against the base 120, thereby ensuring the air tightness of the air guide seat 510.

[0100] As an optional embodiment of the present invention, Figure 1 to Figure 2 As shown, the downward pressing elastic member 530 is a spring, and the downward pressing elastic member 530 is wound around the outer side of the rotating shaft tube 112 .

[0101] As a preferred embodiment of the present invention, Figure 2 As shown, the handle 320 is provided with a stop groove 323, and the pot cover also includes a pressure measuring valve 610 and a stop pin 620. The pressure measuring valve 610 is arranged on the base 120, and the stop pin 620 is movably arranged at the bottom of the rotating groove, and the nail rod of the stop pin 620 passes through the top cover 110. The valve block of the pressure measuring valve 610 can push up the nail rod of the stop pin 620 when the air pressure on the outside of the bottom of the base 120 is greater than the air pressure on the outside of the top cover 110, and make the nail head of the stop pin 620 enter the stop groove 323 of the handle 320.

[0102] In the embodiment of the present invention, the pot cover also includes a pressure measuring valve 610 and a stop pin 620. When the internal air pressure of the pressure cooker is relatively high, the valve block of the pressure measuring valve 610 is lifted up by the internal and external pressure difference, and then the nail head of the stop pin 620 is pushed into the stop groove 323 of the handle 320. At this time, the handle 320 cannot be rotated due to the locking effect of the stop pin 620. Only when the pressure cooker completes the pressure relief and reaches the state of internal and external pressure difference balance, the valve block of the pressure measuring valve 610 and the stop pin 620 fall down due to the action of gravity, and the handle 320 can be freely rotated, thereby effectively preventing the user from opening the pressure cooker before the pressure relief is completed, thereby ensuring the safety of the pressure cooker.

[0103] As an optional embodiment of the present invention, Figure 1 to Figure 2 As shown, the pot cover also includes a protective cover 710, which is fixedly arranged on the side of the lower shell 121 away from the top cover 110. The protective cover 710 has a plurality of connecting holes 711. The connecting holes 711 and a plurality of through holes on the lower shell 121 connect the outer space of the protective cover 710 with the air guide cavity 511 of the air guide seat 510.

[0104] As an optional embodiment of the present invention, Figure 8As shown, the elastic sealing ring 200 includes an upper fixing ring 210, a contact ring 220 and a lower fixing ring 230 which are connected in sequence. The upper fixing ring 210 and the lower fixing ring 230 are both in contact with the side of the cover body 100. The position of the contact ring 220 corresponds to the second end of the plurality of movable blocks 400, and the outer diameter of the contact ring 220 in a non-stressed state is smaller than the outer diameters of the upper fixing ring 210 and the lower fixing ring 230.

[0105] As a preferred embodiment of the present invention, Figure 8 As shown, the central area of ​​the contact ring 220 is recessed outward to form a matching groove 221, and the position of the matching groove 221 corresponds to the position of the second end of the movable block 400, thereby ensuring the stability of the matching relationship between the contact ring 220 and the movable block 400.

[0106] As an optional embodiment of the present invention, Fig.12 As shown, the elastic sealing ring 200 also includes a fixing portion 240, which is connected to one end of the lower fixing ring 230 away from the upper fixing ring 210, and the fixing portion 240 is fixedly arranged inside the cover body 100 to fix the elastic sealing ring 200 on the cover body 100, thereby ensuring the stability of the connection between the elastic sealing ring 200 and the cover body 100.

[0107] As another optional embodiment of the present invention, Fig.13 As shown, the pot cover also includes a fastening ring 250, which is sleeved on the outer side of the lower fixing ring 230 to fix the lower fixing ring 230 on the cover body 100. The elastic sealing ring 200 is tightened on the outer side of the cover body 100 through the fastening ring 250 to ensure the stability of the connection between the two.

[0108] As a preferred embodiment of the present invention, Fig.14 , Fig.15 As shown, the elastic sealing ring 200 includes an upper fixing ring 210, a contact ring 220 and a fixing portion 240 which are connected in sequence, the upper fixing ring 210 contacts the side of the cover body 100, the fixing portion 240 is fixedly arranged inside the cover body 100, the position of the contact ring 220 corresponds to the second end of the plurality of movable blocks 400, and the outer diameter of the contact ring 220 in a non-stressed state is greater than the outer diameters of the upper fixing ring 210 and the fixing portion 240.

[0109] In the embodiment of the present invention, the central area of ​​the elastic sealing ring 200 (ie, the contact ring 220) protrudes outward, so that Fig.16As shown, when the pot lid is covered on the pot body 10, the outer side of the contact ring 220 of the elastic sealing ring 200 directly expands to below the boss structure (such as the inner boss 11) or into the groove structure (such as the inner groove 12) on the inner wall of the pot body 10, thereby reducing the deformation amount of the elastic sealing ring 200 required in the process of the movable block 400 pushing the elastic sealing ring 200 out to the locked state, thereby extending the service life of the elastic sealing ring 200 component.

[0110] As a preferred embodiment of the present invention, Fig.15 As shown, the outer diameter of the contact ring 220 first increases and then decreases along the axial direction of the pot cover. There is at least one annular sealing ridge 222 on the outer surface of the contact ring 220. The annular sealing ridge 222 extends around the axis of the pot cover. The annular sealing ridge 222 can increase the pressure between the corresponding area of ​​the contact ring 220 and the inner wall of the pot body, thereby further ensuring the sealing effect of the pressure cooker.

[0111] Alternatively, if Fig.15 As shown, the outer surface of the contact ring 220 has a plurality of annular sealing ridges 222 .

[0112] As an optional embodiment of the present invention, Fig.15 As shown, the cross section of the contact ring 220 along the radial direction of the pot cover (ie, the cross section shown in the figure) is in the shape of an arc.

[0113] As an optional embodiment of the present invention, Fig.15 As shown, the fixing portion 240 is sandwiched between the lower shell 121 and the reinforcement ring 122 .

[0114] As an optional embodiment of the present invention, Fig.15 As shown, the fixing portion 240 includes a first connection portion 241, a second connection portion 242 and a third connection portion 243 which are connected in sequence, wherein the outer edge of the first connection portion 241 is connected to the contact ring 220, the inner edge of the first connection portion 241 extends radially, the third connection portion 243 is clamped between the bottom surface of the reinforcement ring 122 and the lower shell 121, and the second connection portion 242 is connected between the inner edge of the first connection portion 241 and the outer edge of the third connection portion 243.

[0115] As a second aspect of the present invention, a pressure cooker is provided. Figures 9 to 11 As shown, the pressure cooker includes a pot body 10 and a pot cover provided by an embodiment of the present invention. The inner wall of the pot body 10 is provided with an inner boss 11 extending around the axis of the pot body 10. The multiple movable blocks 400 of the pot cover can squeeze the elastic sealing ring 200 of the pot cover to be located below the inner boss 11 when the pot cover is placed on the pot body 10.

[0116] In the pressure cooker provided by the present invention, the pot cover is engaged with the inner boss 11 on the inner wall of the pot body 10 by extending the movable block 400 and the elastic sealing ring 200, which can effectively reduce the complexity of the pot cover and the edge structure of the pot body 10 and the amount of materials used compared with the existing clamp-type pressure cooker, thereby reducing the manufacturing cost of the pressure cooker. In addition, the movable block 400 and the elastic sealing ring 200 extend radially in all directions, so when using the pot cover provided by the present invention, there is no need to control the relative rotation angle between the pot cover and the pot body 10, which can improve the convenience of users using the pressure cooker and enhance the user experience compared with the existing screw-on pressure cooker.

[0117] In addition, the pressure cooker structure provided by the present invention is quite different from the existing pressure cooker structure. The movable block 400 and the corresponding transmission structure are both arranged inside the pot cover, so that the pot cover looks similar to an ordinary pot. It is not easy for users to identify the pot cover provided by the present invention and the pressure cooker structure with the pot cover as a dangerous pressure vessel, which can effectively prevent users from having a fear of pressure cookers. In addition, the pot cover provided by the present invention has a wide range of applications and can be adapted to some existing pot bodies with boss or groove structures.

[0118] Alternatively, if Fig.11 As shown, the pot body 10 can form an inner boss 11 on the inner wall separately through a variable diameter structure for cooperating with the movable block 400 and the elastic sealing ring 200 .

[0119] Or, as an optional embodiment of the present invention, Figures 9 and 10 As shown, the inner wall of the pot body 10 has an inner groove 12 extending around the axis of the pot body 10, and the inner boss 11 is located on the side of the inner groove 12 facing the top opening of the pot body 10. The movable block 400 can push the elastic sealing ring 200 into the inner groove 12 to lock the pressure cooker.

[0120] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A pot cover, comprising a cover body (100) and an elastic sealing ring (200), wherein the elastic sealing ring (200) is sleeved on the cover body (100) along a circumferential direction, and characterized in that: The pot cover further comprises a driving mechanism (300) and a plurality of movable blocks (400); the cover body (100) has a driving accommodating cavity inside, and the cover body (100) has a plurality of avoidance openings (101) corresponding to the positions of the elastic sealing ring (200) on the circumferential side surface; the first ends of the plurality of movable blocks (400) are located inside the cover body (100) in the driving accommodating cavity and are connected to the driving mechanism (300); the plurality of movable blocks (400) are located on the inner side of the elastic sealing ring (200); the driving mechanism (300) can drive the plurality of movable blocks (400) to extend radially out of the avoidance opening (101) toward the outer side of the cover body (100), so that the second ends of the plurality of movable blocks (400) press the elastic sealing ring (200) outward.

2. The pot cover according to claim 1, characterized in that: The cover body (100) has a driving accommodating cavity inside, and the cover body (100) has a plurality of avoidance openings (101) corresponding to the positions of the elastic sealing ring (200) on the side surface along the circumferential direction. The driving mechanism (300) comprises a rotating disk (310) movably arranged in the driving accommodating cavity, the rotating disk (310) being capable of rotating around the axis of the cover body (100), the rotating disk (310) having a plurality of driving grooves (311) extending along the circumferential direction, the distance between each point on the driving groove (311) and the axial direction of the rotating disk (310) gradually changing along the circumferential direction, the first end of the movable block (400) having a matching portion (440), the matching portion (440) being accommodated in the driving groove (311), and the movable block (400) being capable of radially entering and exiting the avoidance opening (101) as the rotating disk (310) rotates.

3. The pot cover according to claim 2, characterized in that: The driving mechanism (300) further comprises a handle (320), wherein the handle (320) is movably arranged on the top of the cover body (100) and is capable of rotating around the axis of the cover body (100), and the handle (320) is fixedly connected to the rotating disk (310).

4. The pot cover according to claim 2, characterized in that: The cover body (100) comprises a top cover (110) and a base (120); the drive accommodating cavity is formed between the top cover (110) and the base (120); a surface of the base (120) facing the top cover (110) has a plurality of guide blocks (125); the movable block (400) has at least one guide groove, the guide groove extends in a direction in which the movable block (400) enters and exits the avoidance opening (101); and the guide block (125) is accommodated in the guide groove.

5. The pot cover according to claim 2, characterized in that: The cover body (100) comprises a top cover (110) and a base (120); the base (120) comprises a lower shell (121), a reinforcement ring (122) and a connecting seat (123); the connecting seat (123) comprises a mounting ring (123a) and a limiting cylinder (123b) which are connected to each other; a side of the mounting ring (123a) facing away from the limiting cylinder (123b) is fixedly connected to the top cover (110); a side of the limiting cylinder (123b) facing away from the mounting ring (123a) is fixedly connected to the lower shell (121); the reinforcement ring (122) is fixedly arranged on a side of the lower shell (121) facing the mounting ring (123a); the elastic sealing ring (200) is sleeved on the outer sides of the mounting ring (123a) and the reinforcement ring (122); and a plurality of avoidance openings (101) are formed in the limiting cylinder (123b).

6. The pot cover according to claim 2, characterized in that: The cover body (100) comprises a top cover (110) and a base (120); the base (120) comprises a lower shell (121), a reinforcement ring (122) and a connecting tube (124); the top end of the connecting tube (124) is connected to the top cover (110); the bottom end of the connecting tube (124) is fixedly connected to the reinforcement ring (122); the reinforcement ring (122) is fixedly arranged on a side of the lower shell (121) facing the top cover (110); the elastic sealing ring (200) is sleeved on the outer sides of the top cover (110) and the reinforcement ring (122); and a plurality of the avoidance openings (101) are formed in the connecting tube (124).

7. The pot cover according to any one of claims 1 to 6, characterized in that: The movable block (400) comprises a connecting portion (410) and an arc-shaped contact portion (420) which are connected in sequence from a first end to a second end, the connecting portion (410) being capable of radially entering and exiting the cover body (100), and the arc-shaped contact portion (420) extending around the axis of the cover body (100) and being located between the cover body (100) and the elastic sealing ring (200).

8. The pot cover according to any one of claims 1 to 6, characterized in that: The elastic sealing ring (200) comprises an upper fixing ring (210), a contact ring (220) and a lower fixing ring (230) which are connected in sequence, the upper fixing ring (210) and the lower fixing ring (230) both contact the side surface of the cover body (100), the position of the contact ring (220) corresponds to the second ends of the plurality of movable blocks (400), and the outer diameter of the contact ring (220) in a non-stressed state is smaller than the outer diameters of the upper fixing ring (210) and the lower fixing ring (230).

9. The pot cover according to claim 8, characterized in that: The elastic sealing ring (200) further comprises a fixing portion (240), the fixing portion (240) being connected to an end of the lower fixing ring (230) facing away from the upper fixing ring (210), and the fixing portion (240) being fixedly arranged inside the cover body (100) so as to fix the elastic sealing ring (200) on the cover body (100); Alternatively, the pot cover further comprises a fastening ring (250), wherein the fastening ring (250) is sleeved on the outer side of the lower fixing ring (230) so as to fix the lower fixing ring (230) on the cover body (100).

10. The pot cover according to any one of claims 1 to 6, characterized in that: The elastic sealing ring (200) comprises an upper fixing ring (210), a contact ring (220) and a fixing portion (240) which are connected in sequence, the upper fixing ring (210) contacts the side surface of the cover body (100), the fixing portion (240) is fixedly arranged inside the cover body (100), the position of the contact ring (220) corresponds to the second ends of the plurality of movable blocks (400), and the outer diameter of the contact ring (220) in a non-stressed state is greater than the outer diameters of the upper fixing ring (210) and the fixing portion (240).

11. The pot cover according to claim 10, characterized in that: The outer diameter of the contact ring (220) increases first and then decreases along the axial direction of the pot cover, and at least one annular sealing ridge is provided on the outer surface of the contact ring (220), and the annular sealing ridge extends around the axis of the pot cover.

12. The pot cover according to claim 11, characterized in that: The cross-sectional shape of the contact ring (220) along the radial direction of the pot cover is an arc shape.

13. A pressure cooker, characterized in that: The pressure cooker comprises a pot body (10) and a pot cover according to any one of claims 1 to 12, wherein the inner wall of the pot body (10) is provided with an inner boss (11) extending around the axis of the pot body (10), and the plurality of movable blocks (400) of the pot cover are capable of squeezing the elastic sealing ring (200) of the pot cover to be located below the inner boss (11) when the pot cover is placed on the pot body (10).

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