A pressure cooker

Abstract

This utility model discloses a pressure cooker, including a lid and a body. The lid includes a pressure cap, a decorative top cover mounted on the pressure cap, a regulating valve for venting and adjusting pressure, a lid limiting structure, a fastening assembly, and a knob assembly. The lid limiting structure is mounted on the pressure cap, and the knob assembly is mounted on the decorative top cover, with its bottom rotatably hinged to the lid limiting structure. The fastening assembly is installed between the pressure cap and the decorative top cover, with its inner end connected to the lower part of the knob assembly, and its outer end fastening or loosening a pair of opposite sides of the pressure cap and the body as the knob assembly rotates. The regulating valve is installed between the pressure cap and the decorative top cover, with its lower end communicating with the inside of the pot and its upper end communicating with the outside of the pot. This cooker allows for opening and closing of the lid and body by rotating the knob assembly with one hand; rotating the regulating valve knob controls the raising and lowering of the regulating valve cap to achieve a three-level pressure adjustment function; it can seal and pressurize the inside of the pot or release pressure.

Description

Technical Field

[0001] This utility model relates to the field of kitchen cooking appliances, and in particular to a pressure cooker. Background Technology

[0002] Some pressure cookers on the market use a misaligned interlocking mechanism between the lid and the body, requiring both hands to open and close; others have overly complex structures that make them difficult for users to understand; still others have lids that are often left partially open, causing them to leak pressure and become unable to stay in place. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a pressure cooker.

[0004] This utility model is achieved through the following technical solution: a pressure cooker, including a lid and a body, wherein the lid includes a pressure cap, a decorative top cap disposed on the pressure cap, a regulating valve for venting and adjusting pressure, a lid limiting structure, a fastening assembly, and a knob assembly; the lid limiting structure is mounted on the pressure cap, and the knob assembly is mounted on the decorative top cap, with its bottom rotatably hinged to the lid limiting structure; the fastening assembly is installed between the pressure cap and the decorative top cap, its inner end being connected to the lower part of the knob assembly, and its outer end fastening or loosening a pair of opposite sides of the pressure cap and the body as the knob assembly rotates; the regulating valve is installed between the pressure cap and the decorative top cap, its lower end communicating with the inside of the pot, and its upper end communicating with the outside of the pot.

[0005] The single-hand control knob assembly can be rotated to engage or disengage the pressure cap from the pot body, enabling one-button opening and closing of the cap; the regulating valve allows for adjustment of the pressure inside the pot.

[0006] The knob assembly includes a knob base, a retaining ring, a rotating component, a fixing component, a knob decorative cover, and a first fixing screw. The knob base has a stepped annular protrusion in the center, and a first mounting hole is formed at the center of the annular protrusion, penetrating its upper and lower sides. A fixing nut is installed on the pressure cover, and a second fixing screw passes through the knob base and is tightened onto the fixing nut. A second mounting hole is formed at the center of the decorative top cover, and the second mounting hole fits around the annular protrusion. The retaining ring rotatably fastens the knob fixing seat, and the decorative top cover around the second mounting hole is clamped between the retaining ring and the lower step of the annular protrusion. The lid limiting structure includes a lid limiting component and a rotating fixing shaft. A limiting component is installed on the pressure cap, and the lower end of the rotating fixing shaft is fixed to the pot lid limiting component. The lower part of the rotating component is sleeved on the upper section of the annular protrusion, and its upper part is sleeved on the outer circumference of the fixing component and can rotate around the outer circumference of the fixing component. The bottom center of the rotating component extends downward to form a connecting component, and a first mounting groove is opened on the upper side of the connecting component. The connecting component passes through the first mounting hole and connects to the inner end of the fastening assembly. A first sleeve is provided at the lower end of the fixing component, and a second sleeve is provided at the lower end of the knob decorative cover. The first sleeve is placed in the first mounting groove, the second sleeve is placed in the first sleeve, and the first fixing screw passes through the second sleeve, the first sleeve, and the connecting component in sequence and is then tightened on the rotating fixing shaft. The cooperation of the second fixing screw and the fixing nut can realize the fixation of the knob base and the pressure cap. When the rotating component rotates, the connecting component drives the fastening assembly to fasten the pressure cap and the pot body inward, or the connecting component drives the fastening assembly to push outward and loosen the pressure cap and the pot body.

[0007] The fastening components are symmetrically arranged in a pair. Each pair of fastening components includes a clamp, a telescopic arm, a travel limiter, and a travel swing casting. The outer end of the telescopic arm is connected to the clamp, and its inner end is connected to the outer end of the travel limiter. The inner end of the travel limiter has an inclined guide groove. The travel swing casting is fitted around the outer periphery of the lid limiting structure and can rotate around it. Each end of the travel swing casting has a first guide post, and the two first guide posts are respectively inserted into the adjacent guide grooves and can slide along the grooves. The travel swing casting is connected to the lower part of the knob assembly and rotates with it. When the knob assembly rotates, its lower part drives the travel swing casting to rotate. The first guide posts slide along the guide grooves, squeezing the travel limiter and causing it to move inward or outward. When the travel limiter moves inward, it drives the telescopic arm to move inward, thereby causing the clamp to fasten the pressure cap and the pot body. When the travel limiter moves outward, it drives the telescopic arm to move outward, thereby causing the clamp to loosen the pressure cap and the pot body.

[0008] The regulating valve includes a regulating valve fixing nut, a regulating valve core, a regulating position, a regulating valve decorative ring, a shock-absorbing spring, an anti-disengagement spring, a first counterweight, a second counterweight, a regulating valve knob, and a regulating valve cap; the pressure cover has a third mounting hole, and the decorative top cover has a fourth mounting hole; the regulating valve decorative ring is a first cylindrical structure with an upward opening, and the outer periphery of the first cylindrical structure has a vertically arranged first positioning post and a second guide post, the lower part of the first cylindrical structure is recessed inward to form a first annular stage, and the lower side of the first annular stage is the first annular stage surface; the regulating position is a second cylindrical structure with an upward opening, the middle of the outer periphery of the second cylindrical structure has a first positioning retaining ring, and the top of the second cylindrical structure has a... The structure features a stepped design, with the lower part of the second cylindrical structure recessed inward to form a second annular step. The regulating valve knob is annular, with a first raised ring on its inner wall, and a positioning cylinder on the first raised ring. The lower part of the regulating valve cap extends downward to form a second positioning retaining ring. The regulating valve cap has a first vent hole that penetrates its upper and lower sides. A sealing block is provided on the lower side of the regulating valve cap. A first annular groove is formed on the inner side of the second positioning retaining ring, and a first annular raised ring is formed between the first annular groove and the bottom of the second positioning retaining ring. A second annular groove is formed on the outer periphery of the upper part of the second counterweight, and a second annular raised ring is formed between the second annular groove and the top of the second counterweight. The second counterweight has a first... The system includes a first channel and a second channel connected to the first channel. The first and second channels together penetrate the upper and lower sides of the second counterweight. The inner wall of the second channel is recessed towards the outer side of the second counterweight, forming a third annular groove. The adjustment position is fitted into the fourth mounting hole, with its lower end abutting against the upper side of the pressure cover. The first positioning retaining ring abuts against the upper side of the decorative top cover. The regulating valve knob is fitted around the stepped structure of the adjustment position. The regulating valve decorative ring is fitted into the second cylindrical structure of the adjustment position. The second guide post is fitted into the positioning cylinder of the regulating valve knob and can slide up and down along it. The first positioning post abuts against the stepped structure and moves along the stepped structure as the regulating valve knob rotates. The regulating valve core has a third annular protrusion on its outer periphery in the middle. The regulating valve core has a hollow channel in the middle that passes through its upper and lower sides. The lower part of the regulating valve core passes through the regulating valve decorative ring, the adjusting position, and the third mounting hole, and is then tightened with the regulating valve fixing nut. The regulating valve fixing nut has a second vent hole that connects the hollow channel to the inside of the pot. The second counterweight is sleeved on the outer periphery of the upper section of the regulating valve core and can slide up and down along the upper section of the regulating valve core. The first counterweight is a cylindrical structure. The first counterweight is sleeved on the outer periphery of the second counterweight and is located in the space inside the first cylindrical structure of the regulating valve decorative ring. The first counterweight slides up and down along the outer wall of the second counterweight.The first annular protrusion is engaged in the second annular groove, and the second annular protrusion is engaged in the first annular groove. The sealing block opens or closes the outlet of the hollow channel as the second counterweight moves up and down. The outer periphery of the regulating valve core is fitted with a first gasket and a shock-absorbing spring. The upper end of the shock-absorbing spring abuts against the lower side of the third annular protrusion, and the lower end of the shock-absorbing spring abuts against the first gasket. The lower side of the first gasket abuts against the inner bottom surface of the first cylindrical structure. The anti-disengagement spring is engaged in the third annular groove and located above the third annular protrusion. As the regulating valve decorative ring descends, the first annular stage gradually approaches the second annular stage. As the regulating valve decorative ring rises, the first annular stage pushes up the lower side of the first counterweight. The cooperation between the second guide post and the positioning cylinder enables linkage between the regulating valve knob and the regulating valve decorative ring. The first annular protrusion is engaged within the second annular groove, and the second annular protrusion is engaged within the first annular groove, thus securing the regulating valve cap and the second counterweight, enabling them to move in unison. The damping spring, pressing against the first washer and the third annular protrusion, exerts pressure on the regulating valve decorative ring, facilitating the linkage between the decorative ring and the regulating valve knob. The anti-detachment spring prevents the second counterweight from falling off the regulating valve core. As the regulating valve knob rotates, the first positioning post of the regulating valve decorative ring moves along the stepped structure. The first annular stage pushes up the first counterweight, gradually separating it from the second counterweight. Alternatively, the first annular stage descends, lowering the first counterweight and bringing it closer to the second counterweight, applying gravity to it. When the second counterweight rises, it gradually opens the outlet of the hollow channel, allowing the pressure inside the pot to escape through the hollow channel and out of the pot via the first vent, thus achieving the venting and pressure relief function. Conversely, when the second counterweight descends, it gradually closes the outlet of the hollow channel, thus achieving the pressurization function.

[0009] The stepped structure includes a first step and a second step. A first inclined surface forming a transition surface is provided between the first step and the top surface of the second cylindrical structure, and a second inclined surface forming a transition surface is provided between the first step and the second step. The stepped structure and the top surface of the second cylindrical structure form a three-layer stepped structure with three adjustment levels. The first positioning column moves within the area between the top surface of the second cylindrical structure, the first inclined surface, the first step, the second inclined surface, and the second step. The two steps, the two inclined surfaces, and the top surface of the second cylindrical structure together form a three-layer stepped structure, enabling the stepped structure to have a three-level pressure adjustment function. The three-layer stepped structure also provides a clear tactile feedback of the pressure level when the decorative ring of the regulating valve rotates with the regulating valve knob, allowing the user to feel the current pressure level.

[0010] The stepped structure comprises three parts, evenly distributed on the top surface of the second cylindrical structure. These three stepped structures, together with the three evenly distributed first positioning posts, form the decorative ring of the regulating valve and the regulating valve knob, providing stable adjustment of the lifting and lowering function and achieving stable pressure regulation.

[0011] It also includes a second gasket and a sealing O-ring. The inner bottom of the second cylindrical structure has a positioning groove. The second gasket is fitted around the outer periphery of the regulating valve core and located within the positioning groove. The regulating valve core has a second annular surface, the lower side of which abuts against the second gasket. The sealing O-ring is fitted around the outer periphery of the regulating valve core and is clamped between the regulating valve fixing nut, pressure cap, and regulating valve core. The sealing O-ring provides a seal for the regulating valve core. The second gasket provides a buffer between the regulating valve decorative ring and the adjustment position.

[0012] The fixing component has a positioning hole on its lower side, into which a sound pin spring and a rotating sound pin are sequentially placed. The upper side of the inner bottom of the rotating component has a ring-shaped gear. The upper end of the sound pin spring abuts against the inner wall of the positioning hole or the lower side of the knob decorative cover, and its lower end is fitted onto the upper section of the rotating sound pin. The lower end of the rotating sound pin lies on the ring-shaped gear and slides along it. The cooperation between the rotating sound pin and the ring-shaped gear provides both audible and tactile feedback during rotation between the fixing and rotating components.

[0013] The pressure cap has a fifth mounting hole, and the decorative top cover is fitted with a vent decorative cover, which, together with the decorative top cover, forms a sixth mounting hole. The sixth mounting hole is positioned opposite to the fifth mounting hole. The system also includes a vent valve assembly, which comprises a vent nozzle, a pressure relief valve, a vent valve spring, a vent valve element, a first sealing ring, and a second sealing ring. The vent nozzle has an internal cavity, and its top has a third vent hole connecting the external environment of the pot to the cavity. Its lower outer periphery protrudes outward to form a fourth annular protrusion. The pressure relief valve is an upward-opening cylindrical structure with a fourth vent hole on its bottom surface and its lower outer periphery protruding outward to form a fifth annular protrusion. The first sealing ring is fitted onto the... The lower outer periphery of the pressure relief valve has the lower side of the first sealing ring abutting against the upper side of the fifth annular protrusion ring. The upper section of the vent nozzle is fitted into the sixth mounting hole and can slide up and down along it. The upper section of the pressure relief valve passes through the fifth mounting hole and is screwed together with the lower end of the vent nozzle via a threaded connection. The exhaust valve spring and the exhaust port valve are located in the cavity between the pressure relief valve and the vent nozzle. The upper end of the exhaust valve spring abuts against the inner wall of the vent nozzle, and its lower end is fitted onto the outer periphery of the upper section of the exhaust port valve and abuts against the exhaust port valve to open or close the fourth exhaust hole. A second mounting groove is formed on the outer periphery of the middle part of the exhaust port valve. The second sealing ring is fitted into the second mounting groove and is used to assist in sealing the fourth exhaust hole. The exhaust valve assembly is designed to assist the cookware in venting. When the pressure inside the pot is lower than the set value, the spring of the exhaust valve pushes against the exhaust port valve and the fourth exhaust hole to achieve the function of pressurization or buckling. When the pressure inside the pot exceeds the set value, the entire exhaust valve assembly rises, the exhaust port valve is lifted, the fourth exhaust hole is opened, and the air pressure inside the pot enters the cavity between the pressure relief valve and the air outlet from the fourth exhaust hole, and finally is discharged from the pot through the third exhaust hole.

[0014] The regulating valve knob is provided with several anti-slip ribs on its outer periphery. The anti-slip ribs help to increase friction and achieve the rotation function.

[0015] Compared with the prior art, the advantages of this utility model are as follows: the lid can be fastened or loosened by rotating the knob assembly, and the opening and closing operation can be completed with one hand; by rotating the regulating valve knob, the three-layer stepped structure and the cooperation of the first positioning column can control the raising and lowering of the regulating valve cap to achieve the three-level pressure regulation function; it can seal and pressurize or release air pressure inside the pot. Attached Figure Description

[0016] Figure 1 This is an exploded view of the structure of an embodiment of the present utility model;

[0017] Figure 2 This is a perspective view of an embodiment of the present utility model;

[0018] Figure 3 This is a top view of an embodiment of the present utility model;

[0019] Figure 4 for Figure 3 Sectional view along line AA;

[0020] Figure 5 for Figure 3 Sectional view along the BB direction;

[0021] Figure 6 for Figure 3 C-axis sectional view;

[0022] Figure 7 for Figure 4 A magnified view of a portion of point D in the middle;

[0023] Figure 8 for Figure 4 A magnified view of a portion of point E in the middle;

[0024] Figure 9 for Figure 5 A magnified view of a portion of point F in the middle;

[0025] Figure 10 This is a schematic diagram of the pot lid of this utility model embodiment, which is longitudinally cut through the exhaust valve assembly and the knob assembly.

[0026] Figure 11 This is a schematic diagram of the pot lid of this utility model embodiment, cut longitudinally through the adjusting valve and knob assembly.

[0027] Figure 12 This is a top view of the pot lid of this utility model embodiment, cut longitudinally through the adjusting valve and knob assembly;

[0028] Figure 13 for Figure 12 Central GG-direction sectional view;

[0029] Figure 14 This is a schematic diagram of the structure of the pressure cap and the fastening assembly in an embodiment of the present invention.

[0030] Figure 15 This is a top view of the pressure cap and the fastening assembly in an embodiment of the present invention.

[0031] Figure 16 for Figure 15 Sectional view along the HH direction;

[0032] Figure 17 for Figure 15 Sectional view in the middle II direction;

[0033] Figure 18This is a structural diagram of the knob assembly in the lower direction according to an embodiment of the present utility model;

[0034] Figure 19 This is a top view of the knob assembly according to an embodiment of the present utility model;

[0035] Figure 20 for Figure 19 Sectional view along the JJ direction;

[0036] Figure 21 for Figure 19 Cross-sectional view along the KK axis;

[0037] Figure 22 for Figure 19 LL-direction sectional view;

[0038] Figure 23 This is a longitudinal section view of the regulating valve according to an embodiment of the present invention;

[0039] Figure 24 This is an exploded view of the regulating valve structure according to an embodiment of the present invention;

[0040] Figure 25 This is a longitudinal sectional view of the regulating valve in an embodiment of the present invention.

[0041] The meanings of the reference numerals in the diagram are as follows: 11. Pressure cap; 111. Third mounting hole; 112. Fifth mounting hole; 12. Decorative top cap; 121. Second mounting hole; 122. Fourth mounting hole; 13. Fixing nut; 14. Second fixing screw; 15. Exhaust port decorative cap; 16. Sixth mounting hole; 21. Knob base; 211. First mounting hole; 212. Arc-shaped groove; 213. Cylindrical; 22. Fixing ring; 221. Hook; 23. Rotating component; 231. Adapter component; 232. First mounting groove; 233. Ring rack; 24. Fixing component; 241. First sleeve; 24 2. Positioning hole; 25. Knob decorative cover; 251. Second sleeve; 26. First fixing screw; 27. Sound pin spring; 28. Rotating sound pin; 29. ​​Decorative cover metal piece; 31. Pot lid limiting component; 311. Limiting hole; 32. Rotating fixing shaft; 41. Caliper; 42. Telescopic arm; 43. Stroke limiting component; 431. Guide groove; 44. Stroke swing casting; 441. First guide post; 51. Adjusting valve fixing nut; 511. Second vent hole; 52. Adjusting valve core; 521. Third annular raised ring; 522. Second annular stage surface; 53. Adjusting gear; 531. 532. First positioning retaining ring; 533. Second annular step; 534. First inclined surface; 535. Second inclined surface; 536. Second step; 537. Positioning groove; 54. Decorative ring of regulating valve; 541. First positioning post; 542. Second guide post; 543. First annular step; 544. First annular step surface; 55. Shock-absorbing spring; 56. Anti-detachment spring; 57. First counterweight; 58. Second counterweight; 581. Second annular groove; 582. Second annular protrusion ring; 583. First channel; 584. Second channel; 585. Third annular groove; 59. 591. Adjusting valve knob; 592. First raised ring; 593. Positioning cylinder; 514. Adjusting valve cap; 515. Second positioning retaining ring; 516. First vent hole; 517. Sealing block; 518. First annular groove; 519. First annular raised ring; 510. First gasket; 511. Second gasket; 512. Sealing O-ring; 613. Vent; 614. Third vent hole; 615. Fourth annular raised ring; 62. Pressure relief valve; 626. Fourth vent hole; 627. Through hole; 63. Vent valve spring; 64. Vent valve component; 65. First sealing ring; 66. Second sealing ring. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0043] Example

[0044] See Figures 1 to 25A pressure cooker includes a lid and a body. The lid includes a pressure cover 11, a decorative top cover 12 mounted on the pressure cover 11, a regulating valve for venting and adjusting pressure, a lid limiting structure, a fastening assembly, and a knob assembly. The lid limiting structure is mounted on the pressure cover 11, and the knob assembly is mounted on the decorative top cover 12, with its bottom rotatably hinged to the lid limiting structure. The fastening assembly is installed between the pressure cover 11 and the decorative top cover 12, with its inner end connected to the lower part of the knob assembly, and its outer end fastening or loosening the pressure cover 11 and a set of opposite sides of the body as the knob assembly rotates. The regulating valve is installed between the pressure cover 11 and the decorative top cover 12, with its lower end communicating with the inside of the pot and its upper end communicating with the outside of the pot.

[0045] The single-hand control knob assembly can rotate to engage or disengage the pressure cap 11 from the pot body, enabling one-button opening and closing of the cap; the regulating valve allows for adjustment of the pressure inside the pot.

[0046] The knob assembly includes a knob base 21, a retaining ring 22, a rotating component 23, a fixing component 24, a knob decorative cover 25, and a first fixing screw 26. The knob base 21 has a stepped annular protrusion in the middle, and a first mounting hole 211 is formed at the center of the annular protrusion, penetrating its upper and lower sides. A pressure cover 11 is fitted with a fixing nut 13, which is tightened onto the fixing nut 13 after passing through the knob base 21 with a second fixing screw 14. A decorative top cover 12 has a second mounting hole 121 at its center, which fits around the annular protrusion. The retaining ring 22 rotatably fastens the knob fixing seat, and the decorative top cover 12 around the second mounting hole 121 is clamped between the retaining ring 22 and the lower step of the annular protrusion. The lid limiting structure includes a lid limiting component 31 and a rotating fixing shaft 32. The lid limiting component 31... Mounted on the pressure cover 11, the lower end of the rotating fixed shaft 32 is fixed to the pot lid limiting member 31; the upper part of the rotating member 23 is sleeved on the upper section of the annular protrusion, and its upper part is sleeved on the outer circumference of the fixed member 24 and can rotate around the outer circumference of the fixed member 24. The bottom center of the rotating member 23 extends downward to form a connecting member 231, and a first mounting groove 232 is opened on the upper side of the connecting member 231; the connecting member 231 passes through the first mounting hole 211 and is connected to the inner end of the fastening assembly; a first sleeve 241 is provided at the lower end of the fixed member 24, and a second sleeve 251 is provided at the lower end of the knob decorative cover 25; the first sleeve 241 is placed in the first mounting groove 232, the second sleeve 251 is placed in the first sleeve 241, and the first fixing screw 26 passes through the second sleeve 251, the first sleeve 241, and the connecting member 231 in sequence and is then tightened on the rotating fixed shaft 32. The second fixing screw 14 and the fixing nut 13 work together to fix the knob base 21 and the pressure cover 11. When the rotating part 23 rotates, the adapter 231 drives the fastening assembly to fasten the pressure cover 11 and the pot body inward, or the adapter 231 drives the fastening assembly to push outward and loosen the pressure cover 11 and the pot body. In this embodiment, the fixing part 24 is fixed to the knob base 21 by screws, and the rotating part 23 rotates around the fixing part 24. The upper end of the stroke swing casting 44 is a ring structure with an elliptical or rectangular cross-section and rounded corners, or a polygonal column structure. The adapter 231 of the rotating part 23 has a groove that matches the main structure of the upper end of the stroke swing casting 44. The adapter 231 cooperates with the column structure through the groove to realize the rotation function of the stroke swing casting 44. The lid limiting component 31 is a thin sheet structure with both ends raised. One end has a limiting hole 311. A cylinder 213 is provided on the lower side of the knob base 21. During installation, the cylinder 213 is inserted into the limiting hole 311. The knob base 21 has three arc-shaped grooves 212, which are located on the circumference of a circle concentric with the knob base 21. The lower side of the fixing ring 22 has three hooks 221. When the fixing ring 22 rotates, the hooks 221 slide in the arc-shaped grooves 212 until they hook onto the side wall of the arc-shaped grooves 212, thus securing the fixing ring 22 and the knob base 21 to the decorative top cover 12.The top of the knob decorative cover 25 is fastened together with the decorative cover metal piece 29 by a snap fastener.

[0047] A pair of symmetrical fastening components are provided. Each pair of fastening components includes a clamp 41, a telescopic arm 42, a travel limiter 43, and a travel swing casting 44. The outer end of the telescopic arm 42 is connected to the clamp 41, and its inner end is connected to the outer end of the travel limiter 43. The inner end of the travel limiter 43 is provided with an inclined guide groove 431. The travel swing casting 44 is fitted around the outer periphery of the pot lid limiting structure and can rotate around it. The two ends of the travel swing casting 44 are respectively provided with first guide posts 441. The two first guide posts 441 are respectively inserted into the adjacent guide grooves 431 and can slide along the grooves. The travel swing casting 44 is connected to the lower part of the knob assembly and rotates with it. When the knob assembly is rotated, its lower part drives the stroke swing casting 44 to rotate. The first guide post 441 slides along the guide groove 431, pressing the stroke limiter 43 and causing it to move inward or outward. When the stroke limiter 43 moves inward, it drives the telescopic arm 42 to move inward, thereby causing the caliper 41 to fasten the pressure cover 11 and the pot body. When the stroke limiter 43 moves outward, it drives the telescopic arm 42 to move outward, thereby causing the caliper 41 to loosen the pressure cover 11 and the pot body.

[0048] The regulating valve includes a regulating valve fixing nut 51, a regulating valve core 52, a regulating position 53, a regulating valve decorative ring 54, a shock-absorbing spring 55, an anti-disengagement spring 56, a first counterweight 57, a second counterweight 58, a regulating valve knob 59, and a regulating valve cap 510; the pressure cover 11 has a third mounting hole 111, and the decorative top cover 12 has a fourth mounting hole 122; the regulating valve decorative ring 54 is a first cylindrical structure with an upward opening, and the outer periphery of the first cylindrical structure is provided with a vertically arranged first positioning post 541 and a second guide post 542. The lower part of the first cylindrical structure is recessed inward to form a first annular stage 543, and the lower side of the first annular stage 543 is a first annular stage surface 544; the regulating position 53 is an upward opening... The second cylindrical structure has an opening. A first positioning retaining ring 531 is provided in the middle of the outer perimeter of the second cylindrical structure. A stepped structure is provided at the top of the second cylindrical structure. A second annular step 532 is formed by an inward indentation at the bottom of the second cylindrical structure. The regulating valve knob 59 is annular, with a first raised ring 591 on its inner wall. The first raised ring 591 has a positioning cylinder 592. The regulating valve cap 510 extends downward at its lower part to form a second positioning retaining ring. The regulating valve cap 510 has a first vent hole 512 that passes through its upper and lower sides. A sealing block 513 is provided on the lower side of the regulating valve cap 510. A first annular groove 514 is formed on the inner side of the second positioning retaining ring. A first annular groove 514 is formed between the first annular groove 514 and the bottom of the second positioning retaining ring. A ring-shaped protrusion 515; a second annular groove 581 is formed on the outer periphery of the upper part of the second counterweight 58, and a second annular protrusion 582 is formed between the second annular groove 581 and the top of the second counterweight 58; the second counterweight 58 has a first channel 583 and a second channel 584 communicating with the first channel 583, the first channel 583 and the second channel 584 together pass through the upper and lower sides of the second counterweight 58, and the inner wall of the second channel 584 is recessed towards the outer side of the second counterweight 58 to form a third annular groove 585; the adjustment position 53 is fitted in the fourth mounting hole 122, and its lower end abuts against the upper side of the pressure cover 11, and the first positioning retaining ring 531 abuts against the upper side of the decorative top cover 12; the adjusting valve knob 59 is fitted in the adjustment position 515. The outer periphery of the stepped structure of the gear position 53 is covered by the decorative ring 54 of the regulating valve, which is fitted inside the second cylindrical structure of the regulating gear position 53. The second guide post 542 is fitted inside the positioning cylinder 592 of the regulating valve knob 59 and can slide up and down along it. The first positioning post 541 abuts against the stepped structure and moves along the stepped structure as the regulating valve knob 59 rotates. The outer periphery of the middle part of the regulating valve core 52 is provided with a third annular protrusion ring 521. The middle part of the regulating valve core 52 is provided with a hollow channel that passes through its upper and lower sides. The lower part of the regulating valve core 52 passes through the decorative ring 54 of the regulating valve, the gear position 53, and the third mounting hole 111 and is then tightened with the regulating valve fixing nut 51. The regulating valve fixing nut 51 is provided with a second exhaust hole 511 that connects the hollow channel to the inside of the pot.The second counterweight 58 is fitted around the outer periphery of the upper section of the regulating valve core 52 and can slide up and down along the upper section of the regulating valve core 52. The first counterweight 57 is a cylindrical structure, fitted around the outer periphery of the second counterweight 58 and located in the space within the first cylindrical structure of the regulating valve decorative ring 54. The first counterweight 57 slides up and down along the outer wall of the second counterweight 58. The first annular protrusion 515 is engaged in the second annular groove 581, and the second annular protrusion 582 is engaged in the first annular groove 514. The sealing block 513 opens or closes the outlet of the hollow channel as the second counterweight 58 rises and falls. A first washer 516 and a shock-absorbing spring 55 are fitted around the outer periphery of the first cylindrical structure. The upper end of the shock-absorbing spring 55 abuts against the lower side of the third annular protrusion 521, and the lower end of the shock-absorbing spring 55 abuts against the first washer 516. The lower side of the first washer 516 abuts against the inner bottom surface of the first cylindrical structure. The anti-disengagement spring 56 is engaged in the third annular groove 585 and is located above the third annular protrusion 521. As the regulating valve decorative ring 54 descends, the first annular stage surface 544 gradually approaches the second annular stage position 532. As the regulating valve decorative ring 54 rises, the first annular stage position 543 abuts against the lower side of the first counterweight block 57 and lifts it up. The cooperation between the second guide post 542 and the positioning cylinder 592 enables the regulating valve knob 59 and the regulating valve decorative ring 54 to be linked. The first annular protrusion 515 is engaged within the second annular groove 581, and the second annular protrusion 582 is engaged within the first annular groove 514, thus securing the regulating valve cap 510 and the second counterweight 58, enabling them to move together. The damping spring 55, pressing against the first washer 516 and the third annular protrusion 521, exerts pressure on the regulating valve decorative ring 54, facilitating the linkage between the regulating valve decorative ring 54 and the regulating valve knob 59. The anti-detachment spring 56, being elastic, prevents the second counterweight 58 from detaching from the regulating valve core 52. As the regulating valve knob 59 is rotated, the first positioning post 541 of the regulating valve decorative ring 54 moves along the stepped structure. The first annular stage 543 pushes up the first counterweight 57, causing the first counterweight 57 to gradually separate from the second counterweight 58. Alternatively, the first annular stage 543 descends, lowering the first counterweight 57, thus gradually approaching the second counterweight 58 and applying gravity to it. When the second counterweight 58 rises, the sealing block 513 gradually opens the outlet of the hollow channel, allowing the pressure inside the pot to escape through the hollow channel and out of the pot via the first exhaust port 512, thereby achieving the exhaust and pressure relief function. Conversely, when the second counterweight 58 descends, the sealing block 513 gradually closes the outlet of the hollow channel, thereby achieving the pressurization function.

[0049] The stepped structure includes a first step 534 and a second step 536. A first inclined surface 533 forming a transition surface is provided between the first step 534 and the top surface of the second cylindrical structure, and a second inclined surface 535 forming a transition surface is provided between the first step 534 and the second step 536. The stepped structure and the top surface of the second cylindrical structure form a three-layer stepped structure with three adjustable levels 53. The first positioning post 541 moves within the area between the top surface of the second cylindrical structure, the first inclined surface 533, the first step 534, the second inclined surface 535, and the second step 536. The two steps, the two inclined surfaces, and the top surface of the second cylindrical structure together form a three-layer stepped structure, giving the stepped structure a three-level pressure adjustment function. The three-layer stepped structure also provides a clear tactile feedback of the pressure level when the regulating valve decorative ring 54 and the regulating valve knob 59 are rotated, allowing the user to feel the current pressure level. In a counterclockwise direction, the components are, in sequence, the first inclined surface 533, the first step 534, the second inclined surface 535, and the second step 536. The height between the first step 534 and the top surface of the second cylindrical structure is less than the height between the second step 536 and the top surface of the second cylindrical structure.

[0050] Three stepped structures are provided, evenly distributed on the top surface of the second cylindrical structure. The three stepped structures, together with the three evenly distributed first positioning posts 541, form the decorative ring 54 of the regulating valve and the regulating valve knob 59 to stably adjust the lifting and lowering function, thereby achieving stable pressure regulation.

[0051] It also includes a second gasket 517 and a sealing O-ring 518. The inner bottom of the second cylindrical structure has a positioning groove 537. The second gasket 517 is fitted around the outer periphery of the regulating valve core 52 and located within the positioning groove 537. The regulating valve core 52 has a second annular surface 522, the lower side of which abuts against the second gasket 517. The sealing O-ring 518 is fitted around the outer periphery of the regulating valve core 52 and is clamped between the regulating valve fixing nut 51, the pressure cap 11, and the regulating valve core 52. The sealing O-ring 518 provides a seal for the regulating valve core 52. The second gasket 517 provides a buffer between the regulating valve decorative ring 54 and the regulating position 53.

[0052] A positioning hole 242 is provided on the lower side of the fixing component 24. A sound pin spring 27 and a rotating sound pin 28 are sequentially placed inside the positioning hole 242. A ring-shaped gear 233 is provided on the upper side of the inner bottom of the rotating component 23. The upper end of the sound pin spring 27 abuts against the inner wall of the positioning hole 242 or against the lower side of the knob decorative cover 25, and its lower end is fitted onto the upper section of the rotating sound pin 28. The lower end of the rotating sound pin 28 is located on the ring-shaped gear 233 and slides along the ring-shaped gear 233. The cooperation between the rotating sound pin 28 and the ring-shaped gear 233 provides both audible and tactile feedback during rotation between the fixing component 24 and the rotating component 23.

[0053] The pressure cap 11 has a fifth mounting hole 112, and the decorative top cover 12 is fitted with a vent decorative cover 15. The vent decorative cover 15 and the decorative top cover 12 together form a sixth mounting hole 16, which is opposite to the fifth mounting hole 112. The system also includes a vent valve assembly, which includes a vent nozzle 61, a pressure relief valve 62, a vent valve spring 63, a vent valve component 64, a first sealing ring 65, and a second sealing ring 66. The vent nozzle 61 has an internal cavity, and its top has a third vent hole 611 that connects the external environment of the pot to the cavity. A fourth annular protrusion 612 is formed by an outward protrusion at its lower outer periphery. The pressure relief valve 62 is an upward-opening cylindrical structure with a fourth vent hole 621 on its bottom surface and a fifth annular protrusion formed by an outward protrusion at its lower outer periphery. The first sealing ring 65 is fitted around the lower outer circumference of the pressure relief valve 62, and the lower side of the first sealing ring 65 abuts against the upper side of the fifth annular protrusion ring; the upper section of the air outlet 61 is fitted inside the sixth mounting hole 16 and can slide up and down along it; the upper section of the pressure relief valve 62 passes through the fifth mounting hole 112 and is screwed together with the lower end of the air outlet 61 by a threaded connection; the exhaust valve spring 63 and the exhaust port valve 64 are located in the cavity between the pressure relief valve 62 and the air outlet 61; the upper end of the exhaust valve spring 63 abuts against the inner wall of the air outlet 61, and its lower end is fitted around the outer circumference of the upper section of the exhaust port valve 64 and abuts against the exhaust port valve 64 to open or close the fourth exhaust port 621; a second mounting groove is opened around the middle outer circumference of the exhaust port valve 64, and the second sealing ring 66 is fitted inside the second mounting groove and is used to assist in sealing the fourth exhaust port 621. The diameter of the fourth annular protrusion 612 is larger than the diameter of the fifth mounting hole 112, and the diameter of the first sealing ring 65 is larger than the diameter of the fifth mounting hole 112. The exhaust valve assembly is designed to assist the cookware in venting. When the pressure inside the pot is lower than the set value (5 kPa), the exhaust valve spring 63 pushes against the exhaust port valve 64, which in turn pushes against the fourth exhaust port 621, achieving a pressurization or buckling function. When the pressure inside the pot exceeds the specified value (240 kPa), the entire exhaust valve assembly rises, the exhaust port valve 64 is lifted, the fourth exhaust port 621 is opened, and the pressure inside the pot enters the cavity between the pressure relief valve 62 and the vent 61 from the fourth exhaust port 621, and finally is discharged from the pot through the third exhaust port 611. In this embodiment, the pressure relief valve 62 has a through hole 622 on its side wall. When there is gas pressure in the pot, it can enter the cavity between the pressure relief valve 62 and the gas outlet 61 through the through hole 622 and be discharged outside the pot through the third exhaust hole 611. When the gas pressure increases to the point that the exhaust valve assembly is raised, the through hole 622 is located above the pressure cover 11. At this time, the through hole 622 is not connected to the inside of the pot. At this time, the exhaust function can only be achieved by relying on the gas pressure to open the exhaust port valve 64 of the fourth exhaust hole 621.

[0054] The regulating valve knob 59 has several anti-slip ribs on its outer periphery. These anti-slip ribs increase friction, facilitating the rotation function. In this embodiment, the rotating component 23 of the knob assembly may also have several anti-slip ribs on its outer periphery. Both types of anti-slip ribs are vertically arranged, which is beneficial for the rotating components.

[0055] In this embodiment, the stepped structure, together with the top surface of the second cylindrical structure, forms a three-layer stepped structure through two steps, two inclined surfaces, and thus provides a triple-level adjustment function. When the first positioning post 541 is on the top surface of the second cylindrical structure, the sealing block 513 seals the outlet of the first channel 583. When the first positioning post 541 slides along the first inclined surface 533 and moves towards the first step 534, the first positioning post 541 is gradually lifted, the adjusting valve decorative ring 54 moves upward, and the first annular step 543 gradually approaches the lower side of the first counterweight 57 and lifts it up. When the first positioning post 541 reaches the first step 534, the first counterweight 57 stops moving. If the level 53 needs to be adjusted again, the adjusting valve knob 59 needs to be rotated again. Turning the regulating valve knob 59 again causes the first positioning pin 541 to continue rising from the first step 534 along the second inclined surface 535, further lifting the first counterweight 57. Upon reaching the second step 536, the first counterweight 57 reaches its highest position, at which point the pressure inside the pot continues to increase. When it reaches a certain range, the second counterweight 58 is lifted by the air pressure, causing the sealing block 513 to open the first channel 583, thus achieving air release and pressure relief. When the two counterweights press against the regulating valve core 52, the pressure reaches its maximum, 90-100 kPa. When the air pressure exceeds this value, it can lift the two counterweights. The regulating valve has two pressure levels: primary pressure and secondary pressure. When the primary pressure is reached, the pressure inside the pot reaches 60 kPa; when approaching the secondary pressure, the pressure inside the pot can reach 90 kPa; and when the secondary pressure is reached, the pressure inside the pot reaches 90-100 kPa. If the gas pressure inside the pot exceeds the maximum limit of 100 kPa, the gas pressure will lift the second counterweight 58, open the first channel 583, and allow the gas to be discharged outward, thereby reducing the pressure and keeping the pressure inside the pot constant.

[0056] The above detailed description is a specific description of a feasible embodiment of the present utility model. This embodiment is not intended to limit the patent scope of the present utility model. All equivalent implementations or modifications that do not depart from the present utility model should be included in the patent scope of this case.

Claims

1. A pressure cooker, comprising a lid and a body, characterized in that: The pot lid includes a pressure cap, a decorative top cover mounted on the pressure cap, a regulating valve for venting and adjusting pressure, a pot lid limiting structure, a fastening assembly, and a knob assembly. The pot lid limiting structure is mounted on the pressure cap, and the knob assembly is mounted on the decorative top cover, with its bottom rotatably hinged to the pot lid limiting structure. The fastening assembly is installed between the pressure cap and the decorative top cover, with its inner end connected to the lower part of the knob assembly, and its outer end fastening or loosening the pressure cap and a pair of opposite sides of the pot body as the knob assembly rotates. The regulating valve is installed between the pressure cap and the decorative top cover, with its lower end communicating with the inside of the pot and its upper end communicating with the outside of the pot.

2. The pressure cooker according to claim 1, characterized in that: The knob assembly includes a knob base, a retaining ring, a rotating component, a fixing component, a knob decorative cover, and a first fixing screw. The knob base has a stepped annular protrusion in the center, and a first mounting hole is formed at the center of the annular protrusion, penetrating its upper and lower sides. A fixing nut is installed on the pressure cover, and a second fixing screw passes through the knob base and is tightened onto the fixing nut. A second mounting hole is formed at the center of the decorative top cover, and the second mounting hole fits around the annular protrusion. The retaining ring rotatably fastens the knob fixing seat, and the decorative top cover around the second mounting hole is clamped between the retaining ring and the lower step of the annular protrusion. The lid limiting structure includes a lid limiting component and a rotating fixing shaft. The limiting component is installed on the pressure cover, and the lower end of the rotating fixing shaft is fixed on the pot lid limiting component; the lower part of the rotating component is sleeved on the upper section of the annular protrusion, and its upper part is sleeved on the outer circumference of the fixing component and can rotate around the outer circumference of the fixing component; the bottom center of the rotating component extends downward to form a connecting component, and the upper side of the connecting component has a first mounting groove; the connecting component passes through the first mounting hole and is connected to the inner end of the fastening assembly; the lower end of the fixing component has a first sleeve, and the lower end of the knob decorative cover has a second sleeve; the first sleeve is placed in the first mounting groove, the second sleeve is placed in the first sleeve, and the first fixing screw passes through the second sleeve, the first sleeve, and the connecting component in sequence and is then tightened on the rotating fixing shaft.

3. The pressure cooker according to claim 1, characterized in that: The fastening components are symmetrically arranged in a pair. Each pair of fastening components includes a caliper, a telescopic arm, a travel limiter, and a travel swing casting. The outer end of the telescopic arm is connected to the caliper, and its inner end is connected to the outer end of the travel limiter. The inner end of the travel limiter has an inclined guide groove. The travel swing casting is sleeved on the outer periphery of the pot lid limiting structure and can rotate around it. The two ends of the travel swing casting are respectively provided with first guide posts. The two first guide posts are respectively inserted into the adjacent guide grooves and can slide along the grooves. The travel swing casting is connected to the lower part of the knob assembly and rotates with it.

4. The pressure cooker according to claim 1, characterized in that: The regulating valve includes a regulating valve fixing nut, a regulating valve core, a regulating position, a regulating valve decorative ring, a shock-absorbing spring, an anti-disengagement spring, a first counterweight, a second counterweight, a regulating valve knob, and a regulating valve cap; the pressure cover has a third mounting hole, and the decorative top cover has a fourth mounting hole; the regulating valve decorative ring is a first cylindrical structure with an upward opening, and the outer periphery of the first cylindrical structure has a vertically arranged first positioning post and a second guide post, the lower part of the first cylindrical structure is recessed inward to form a first annular stage, and the lower side of the first annular stage is the first annular stage surface; the regulating position is a second cylindrical structure with an upward opening, the middle of the outer periphery of the second cylindrical structure has a first positioning retaining ring, and the top of the second cylindrical structure has a... The structure features a stepped design, with the lower part of the second cylindrical structure recessed inward to form a second annular step. The regulating valve knob is annular, with a first raised ring on its inner wall, and a positioning cylinder on the first raised ring. The lower part of the regulating valve cap extends downward to form a second positioning retaining ring. The regulating valve cap has a first vent hole that penetrates its upper and lower sides. A sealing block is provided on the lower side of the regulating valve cap. A first annular groove is formed on the inner side of the second positioning retaining ring, and a first annular raised ring is formed between the first annular groove and the bottom of the second positioning retaining ring. A second annular groove is formed on the outer periphery of the upper part of the second counterweight, and a second annular raised ring is formed between the second annular groove and the top of the second counterweight. The second counterweight has a first... The system includes a first channel and a second channel connected to the first channel. The first and second channels together penetrate the upper and lower sides of the second counterweight. The inner wall of the second channel is recessed towards the outer side of the second counterweight, forming a third annular groove. The adjustment position is fitted into the fourth mounting hole, with its lower end abutting against the upper side of the pressure cover. The first positioning retaining ring abuts against the upper side of the decorative top cover. The regulating valve knob is fitted around the stepped structure of the adjustment position. The regulating valve decorative ring is fitted into the second cylindrical structure of the adjustment position. The second guide post is fitted into the positioning cylinder of the regulating valve knob and can slide up and down along it. The first positioning post abuts against the stepped structure and moves along the stepped structure as the regulating valve knob rotates. The regulating valve core has a third annular protrusion on its outer periphery in the middle. The regulating valve core has a hollow channel in the middle that passes through its upper and lower sides. The lower part of the regulating valve core passes through the regulating valve decorative ring, the adjusting position, and the third mounting hole, and is then tightened with the regulating valve fixing nut. The regulating valve fixing nut has a second vent hole that connects the hollow channel to the inside of the pot. The second counterweight is sleeved on the outer periphery of the upper section of the regulating valve core and can slide up and down along the upper section of the regulating valve core. The first counterweight is a cylindrical structure. The first counterweight is sleeved on the outer periphery of the second counterweight and is located in the space inside the first cylindrical structure of the regulating valve decorative ring. The first counterweight slides up and down along the outer wall of the second counterweight.The first annular protrusion is engaged in the second annular groove, and the second annular protrusion is engaged in the first annular groove. The sealing block opens or closes the outlet of the hollow channel as the second counterweight moves up and down. A first gasket and a shock-absorbing spring are sleeved around the outer periphery of the regulating valve core. The upper end of the shock-absorbing spring abuts against the lower side of the third annular protrusion, and the lower end of the shock-absorbing spring abuts against the first gasket. The lower side of the first gasket abuts against the inner bottom surface of the first cylindrical structure. The anti-detachment spring is engaged in the third annular groove and located above the third annular protrusion. As the regulating valve decorative ring descends, the first annular stage gradually approaches the second annular stage. As the regulating valve decorative ring rises, the first annular stage pushes up the lower side of the first counterweight.

5. The pressure cooker according to claim 4, characterized in that: The stepped structure includes a first step and a second step. A first inclined surface forming a transition surface is provided between the first step and the top surface of the second cylindrical structure. A second inclined surface forming a transition surface is provided between the first step and the second step. The stepped structure and the top surface of the second cylindrical structure form a three-layer stepped structure with three adjustment levels. The first positioning column moves within the area between the top surface of the second cylindrical structure, the first inclined surface, the first step, the second inclined surface, and the second step.

6. The pressure cooker according to claim 4, characterized in that: The stepped structure has three parts, which are evenly distributed on the top surface of the second cylindrical structure.

7. The pressure cooker according to claim 4, characterized in that: It also includes a second gasket and a sealing O-ring. The inner bottom of the second cylindrical structure is provided with a positioning groove. The second gasket is sleeved on the outer periphery of the regulating valve core and is located in the positioning groove. The regulating valve core is provided with a second annular stage surface, and the lower side of the second annular stage surface abuts against the second gasket. The sealing O-ring is sleeved on the outer periphery of the regulating valve core and is clamped between the regulating valve fixing nut, the pressure cover and the regulating valve core.

8. The pressure cooker according to claim 2, characterized in that: The fixing component has a positioning hole on its lower side, and a sound pin spring and a rotating sound pin are placed in the positioning hole in sequence; the upper side of the inner bottom of the rotating component has a ring toothed rack, the upper end of the sound pin spring abuts against the inner wall of the positioning hole or the lower side of the knob decorative cover, and its lower end is sleeved on the upper section of the rotating sound pin. The lower end of the rotating sound pin is located on the ring toothed rack and slides along the ring toothed rack.

9. The pressure cooker according to claim 2, characterized in that: The pressure cap has a fifth mounting hole, and the decorative top cover is fitted with a vent decorative cover, which, together with the decorative top cover, forms a sixth mounting hole. The sixth mounting hole is positioned opposite to the fifth mounting hole. The system also includes a vent valve assembly, which comprises a vent nozzle, a pressure relief valve, a vent valve spring, a vent valve element, a first sealing ring, and a second sealing ring. The vent nozzle has an internal cavity, and its top has a third vent hole connecting the external environment of the pot to the cavity. Its lower outer periphery protrudes outward to form a fourth annular protrusion. The pressure relief valve is an upward-opening cylindrical structure with a fourth vent hole on its bottom surface and its lower outer periphery protruding outward to form a fifth annular protrusion. The first sealing ring is fitted onto the... The lower outer periphery of the pressure relief valve has the lower side of the first sealing ring abutting against the upper side of the fifth annular protrusion ring; the upper section of the air outlet is fitted into the sixth mounting hole and can slide up and down along it; the upper section of the pressure relief valve passes through the fifth mounting hole and is screwed together with the lower end of the air outlet via a threaded connection; the exhaust valve spring and the exhaust port valve are located in the cavity between the pressure relief valve and the air outlet; the upper end of the exhaust valve spring abuts against the inner wall of the air outlet, and its lower end is fitted into the outer periphery of the upper section of the exhaust port valve and abuts against the exhaust port valve to open or close the fourth exhaust hole; a second mounting groove is formed on the outer periphery of the middle part of the exhaust port valve, and the second sealing ring is fitted into the second mounting groove and used to assist in sealing the fourth exhaust hole.

10. The pressure cooker according to claim 4, characterized in that: The regulating valve knob is provided with several anti-slip ribs on its outer periphery.

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