A screw type pressure cooker

Abstract

A screw type pressure cooker, including a cooker body, a cooker cover and a panel assembly, the panel assembly is radially installed on the cooker cover, and the cooker cover and the panel assembly can relatively rotate, a knob is installed in the middle of the upper surface of the panel assembly, the knob includes a knob shell and an inner core, a mounting groove is formed in the middle of the upper surface of the cooker cover, a center rotating tooth block and two fan-shaped rotating tooth blocks are arranged in the mounting groove, the center rotating tooth block is connected with the knob shell and can synchronously rotate with the knob shell, arc-shaped tooth surfaces are formed on the left and right sides of the center rotating tooth block, one end of the fan-shaped rotating tooth block is rotationally connected with the panel assembly, and the other end is engaged with the center rotating tooth block, when the knob shell is rotated clockwise, the center rotating tooth block is synchronously rotated, drives the two fan-shaped rotating tooth blocks to rotate counterclockwise, drives the cooker cover to rotate clockwise, realizes cover closing, and vice versa; the structure of the invention is more simple and reasonable, the driving is light and stable, the positioning is reliable, the safety in use is effectively improved, and the panel assembly can be detached, so that daily cleaning is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of kitchen cooking appliances technology, specifically relating to a screw-on pressure cooker. Background Technology

[0002] A pressure cooker is a sealed cooking appliance that raises the boiling point of water by increasing air pressure. It consists of a pot body, lid, safety valve, and other components. Currently, pressure cookers on the market have two types of lid locking mechanisms: clamp-type and screw-on type. Clamp-type pressure cookers are considered high-end products, offering convenient operation and high safety, but they are more expensive. Screw-on type pressure cookers, on the other hand, are popular due to their simpler structure and lower cost. However, existing screw-on type pressure cookers have drawbacks, requiring both hands to rotate, resulting in slower operation and relatively lower safety.

[0003] Often, the existing utility model patent CN202512011181.9, entitled "A Screw-on Pressure Cooker," includes a pot body, a pot lid, and side ears. The pot lid includes a steel lid, an arc-shaped tooth mounted on the steel lid, a panel assembly with a fixed shaft, a lid handle with a positioning platform on the bottom, a central rotating tooth block with a first rack on the lower side of the positioning platform, a gear, a central nut, and a central shaft. The central shaft passes through the central rotating tooth block and the steel lid in sequence and is screwed tightly with the central nut. The lower sides of both ends of the panel assembly are provided with positioning grooves, and the upper side of the side ears is provided with a boss that matches the positioning grooves. The gear is sleeved on the fixed shaft, with one end of the gear meshing with the first rack and the other end meshing with the arc-shaped tooth. The lower side of the outer edge of the steel lid is provided with evenly arranged and alternately distributed inner buckles and outer recesses, and the pot body and pot opening are provided with several evenly arranged and alternately distributed outer buckles and inner recesses. The inner buckles and outer buckles are misaligned or overlapped as the lid handle rotates. This pressure cooker uses a rotating lid handle to rotate a central rotating gear block. The meshing gears and arc-shaped teeth work together to rotate the steel lid, allowing for one-handed operation. However, the structure is relatively complex. In addition to the central rotating gear block and gears, arc-shaped teeth also need to be installed on the lid, making the manufacturing process quite troublesome. Therefore, further structural improvements are needed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a rotary pressure cooker with a simpler and more reasonable structure and convenient and lightweight operation, in light of the existing technology.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a screw-on pressure cooker, comprising a pot body, a pot lid, and a panel assembly. The upper end of the pot body is provided with multiple pot teeth along its circumference, and correspondingly, the pot lid is provided with multiple lid teeth along its circumference. The lid teeth and pot teeth are engaged by rotation to lock the pot lid onto the pot body. The panel assembly is radially mounted on the pot lid, and the pot lid and the panel assembly are rotatable relative to each other. The panel assembly is characterized by having a knob installed in the center of its upper surface, the knob comprising a knob shell and an inner core. The pot lid has a mounting groove formed in the center of its upper surface, and the mounting groove contains a central rotating tooth block and two fan-shaped rotating tooth blocks. The central rotating toothed block is connected to the knob shell and can rotate synchronously with the knob shell. The left and right sides of the central rotating toothed block are formed with arc-shaped toothed surfaces. One end of the fan-shaped rotating toothed block is rotatably connected to the panel assembly, and the other end is engaged with the central rotating toothed block. A through waist-shaped hole is opened on the fan-shaped rotating toothed block, and a corresponding drive pin is protruding in the mounting groove. The drive pin on the pot lid and the through waist-shaped hole of the fan-shaped rotating toothed block are in movable cooperation. When the knob shell is rotated clockwise, the central rotating toothed block rotates synchronously, driving the two fan-shaped rotating toothed blocks to rotate counterclockwise. The drive pin drives the pot lid to rotate clockwise to close the lid. Otherwise, it rotates in the opposite direction to open the lid.

[0006] Furthermore, the panel assembly is detachably mounted on the pot lid, making it easy to disassemble and clean the panel assembly.

[0007] Furthermore, the inner core is built into the knob housing, and a central shaft is provided at the lower end of the inner core. A central hole for the central shaft to pass through is opened at the center of the panel assembly. Corresponding through holes are opened at the center of the central rotating gear block and the pot lid. A positioning piece is welded and fixed to the pot lid at the through hole at the center. The lower end of the central shaft passes through the panel assembly, the central rotating gear block and the pot lid and is connected and fixed with the matching quick-release nut. A connecting post protrudes from the lower end of the knob housing. Arc-shaped limiting holes for the connecting post to pass through are opened at the corresponding positions on the front and rear sides of the central hole on the panel assembly. Connecting holes are provided on the front and rear sides of the central rotating gear block. There are also connecting screws that pass through the connecting holes of the central rotating gear block from bottom to top and are connected to the connecting post, making the transmission more stable and reliable and easy to apply force.

[0008] Furthermore, the knob shell is a circular shell with an opening at the top, and the inner core is set inside the knob shell. The lower end of the knob shell has a circular hole for the central shaft to pass through. After the inner core is assembled and positioned, its upper surface is basically flush with the knob shell. The surface of the knob shell has three-dimensional markings for opening and closing the lid. Correspondingly, the surface of the panel assembly has matching engravings to facilitate the operation of opening and closing the pot lid.

[0009] Furthermore, an integrated temperature and pressure gauge is installed on the pot lid, with the temperature and pressure gauge forming the inner core. It is fixed to the pot lid by a central shaft, a positioning plate, and a quick-release nut. The pin of the inner core serves as the detection element of the temperature and pressure gauge, passing downward through the central shaft and the pot lid, and extending into the quick-release nut inside the pot body. This facilitates accurate measurement of the temperature and pressure parameters inside the pot body and makes cooking easier.

[0010] Furthermore, the fan-shaped rotating tooth block is fan-shaped, and the arc surface of the fan-shaped rotating tooth block is formed with a tooth surface that matches the arc-shaped tooth surface of the central rotating tooth block. A connecting countersunk hole is opened at the outer end of the fan-shaped rotating tooth block, and a corresponding connecting protrusion is formed on the lower surface of the panel assembly. The fan-shaped rotating tooth block is rotatably fitted onto the connecting protrusion through the connecting countersunk hole. There is also a connecting screw, which is screwed into the inner hole of the connecting protrusion to achieve a rotatable connection between the fan-shaped rotating tooth block and the panel assembly.

[0011] Furthermore, the mounting groove is a rectangular structure with arc-shaped sides. A circular concave surface is formed in the middle of the upper surface of the pot lid. The mounting groove is recessed in the circular concave surface. The short sides of the left and right sides of the mounting groove are connected to the circular concave surface. The fan-shaped rotating tooth block is sleeved on the drive pin and meshes with the central rotating tooth block, which provides installation space for the transmission mechanism and facilitates assembly and production.

[0012] Furthermore, the left and right ends of the panel assembly are equipped with positioning seats corresponding to the handles on the left and right sides of the pot body. An I-shaped connecting pin is welded to the left and right sides of the upper surface of the pot lid. The positioning seat has an arc-shaped groove for the I-shaped connecting pin to pass through and for limiting its rotation. One side of the arc-shaped groove is formed into a circular opening. A disassembly button mechanism is provided on the outside of the positioning seat. When the pot lid is opened or closed, the I-shaped connecting pin moves in the arc-shaped groove. When the lid is open, the I-shaped connecting pin is aligned with the circular opening of the arc-shaped groove. Pressing the disassembly button mechanism inward allows the I-shaped connecting pin to come out from the circular opening, facilitating the disassembly and cleaning of the panel assembly.

[0013] Furthermore, the disassembly button mechanism includes a button, a retaining plate, and a spring. The button is mounted and connected to the receiving groove of the positioning seat by a shaft connection. The upper end of the button has an opening. Correspondingly, the retaining plate is arranged on the positioning seat and can move left and right. The surface of the retaining plate has a notch for the upper end of the button to pass through. Above the notch is a connecting pin that is inserted and connected to the opening at the upper end of the button. In addition, a supporting spring is provided between the retaining plate and the spring seat on the positioning seat, so that the retaining plate always maintains a tendency to move to one side, covering part of the circular opening, thereby preventing the I-shaped connecting pin from coming out.

[0014] Finally, a positioning groove is provided on the outer surface of the positioning seat, and correspondingly, a positioning block is provided in the middle of the handle so that the panel assembly is positioned on the handle of the pot body and cannot be rotated.

[0015] Compared with existing technologies, the advantages of this invention are as follows: A knob is installed on the panel assembly, the knob including a knob shell and an inner core; a mounting groove is formed on the pot lid, and a central rotating tooth block and a fan-shaped rotating tooth block are provided in the mounting groove. The central rotating tooth block is connected to the knob shell, and the fan-shaped rotating tooth block meshes with the central rotating tooth block and is rotatably connected to the panel assembly. By rotating the knob shell clockwise, the central rotating tooth block rotates, and the fan-shaped rotating tooth block rotates counterclockwise. This drives the pot lid to rotate clockwise via a drive pin, thus closing the lid; conversely, rotating counterclockwise opens the lid. Positioning seats are provided on both sides of the pot lid to cooperate with the panel assembly. The panel assembly is positioned on the handle of the pot body via the positioning seats. The positioning seats have a disassembly structure, allowing the panel assembly to be disassembled for easy cleaning. This invention has a simpler and more reasonable structure, is lightweight and labor-saving to drive, and provides stable and reliable positioning, effectively improving the safety of use. Furthermore, the panel assembly is detachable, facilitating daily cleaning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of an embodiment of the present invention in an inverted state;

[0018] Figure 3 This is a partial cross-sectional view of an embodiment of the present invention with the pot lid closed;

[0019] Figure 4 This is a partial cross-sectional view of an embodiment of the present invention with the pot lid open;

[0020] Figure 5 This is an exploded view of the pot lid;

[0021] Figure 6 An exploded view of the pot lid from another angle;

[0022] Figure 7 for Figure 5 Further breakdown diagram;

[0023] Figure 8 This is a longitudinal sectional view of an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the disassembly and assembly of an embodiment of the present invention. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] like Figures 1-8As shown, a screw-on pressure cooker includes a pot body 1, a lid 2, and a panel assembly 3. The upper end of the pot body 1 has multiple circumferential teeth, and correspondingly, the lid 2 has multiple circumferential teeth. The lid teeth and pot teeth engage by rotation, locking the lid 2 onto the pot body 1. The panel assembly 3 is detachably radially mounted on the lid 2, and the lid 2 and panel assembly 3 can rotate relative to each other. A knob 4 is mounted in the center of the upper surface of the panel assembly 3. The knob 4 includes a knob shell 41 and an inner core 42. A mounting groove 21 is formed in the center of the upper surface of the lid 2. The mounting groove 21 contains a central rotating tooth block 5 and two fan-shaped rotating tooth blocks 6. The central rotating tooth block 5 is connected to the knob shell 41 and can rotate synchronously with the knob shell 41. Arc-shaped tooth surfaces 51 are formed on the left and right sides of the central rotating tooth block 5. Correspondingly, one end of each fan-shaped rotating tooth block 6 is connected to the panel assembly 3. One end is connected to the other end, which meshes with the central rotating tooth block 5. A through-hole 63 is provided on the fan-shaped rotating tooth block 6. A corresponding drive pin 20 is protruding in the mounting groove 21, so that the other side of the fan-shaped rotating tooth block 6 is fitted onto the drive pin 20 through the through-hole 63 and the drive pin 20. When the knob shell 41 is turned clockwise, the central rotating tooth block 5 rotates synchronously, and drives the two fan-shaped rotating tooth blocks 6 to rotate counterclockwise. Due to the active engagement between the drive pin 20 on the lid 2 and the through-hole 63 of the fan-shaped rotating tooth block 6, the lid 2 is driven to rotate clockwise, thus closing the lid. Conversely, when the knob shell 41 is turned counterclockwise, the central rotating tooth block 5 rotates synchronously, and drives the two fan-shaped rotating tooth blocks 6 to rotate clockwise. Combined with the engagement between the drive pin 20 on the lid 2 and the through-hole 63 of the fan-shaped rotating tooth block 6, the lid 2 is driven to rotate counterclockwise, thus opening the lid.

[0027] The specific structure is as follows: The knob 4 includes a knob shell 41 and an inner core 42. The inner core 42 is built into the knob shell 41 and can rotate relative to the knob shell 41. The lower end of the inner core 42 is provided with a central shaft 44, which is connected as a whole by threads. The center position of the panel assembly 3 is provided with a central hole 31 for the central shaft 44 to pass through, and a central shaft sleeve 35 is provided in the central hole 31. The center rotating tooth block 5 and the pot lid 2 are respectively provided with corresponding through holes 53 and 22. The pot lid 2 is welded to the through hole 22 at the center position to fix a positioning piece 24. The positioning piece 24 is usually opened with a waist-shaped hole to facilitate the positioning and fixing of the central shaft 44. The lower end of the central shaft 44 passes through the panel assembly 3, the central rotating tooth block 5 and the pot lid 2 and is connected and fixed with the matching quick-release nut 40, so that the inner core 42, the central shaft 44 and the pot lid 2 are connected together and can rotate synchronously together, so that the inner core 42 can rotate with the knob shell 41. The lower end of the knob housing 41 has connecting posts 411 protruding on both the front and rear sides. The connecting posts 411 typically contain hollow stainless steel posts with internal threads. The panel assembly 3 has arc-shaped limiting holes 32 on both the front and rear sides of the central hole for the connecting posts 411 to pass through. The central rotating gear block 5 has connecting holes 52 on both the front and rear sides, and connecting screws pass through the connecting holes 52 of the central rotating gear block 5 from bottom to top, connecting to the connecting posts 411. Thus, the rotation of the knob housing 4 synchronously drives the central rotating gear block 5 to rotate. The mounting groove 21 has drive pins 20 welded and fixed on the left and right sides of the central rotating gear block 5. The upper end of the drive pin 20 passes through the through-hole 63 of the fan-shaped rotating gear block 6, engaging with the through-hole 63. In this way, the central rotating gear block 5 drives the two fan-shaped rotating gear blocks 6, which in turn push the drive pins 20, ultimately causing the lid 2 to rotate. This avoids the knob 4 directly driving the lid 2 to rotate, achieving a labor-saving and lightweight effect. The knob housing 41 is a circular shell with an open top. The inner core 42 is located inside the knob housing 41. The lower end of the knob housing 41 has a circular hole for the central shaft 44 to pass through. After the inner core 42 is assembled and positioned, its upper surface is basically flush with the knob housing 41. The surface of the knob housing 41 has three-dimensional markings for opening and closing the lid. Correspondingly, the panel assembly 3 has matching engraving lines for easy operation reference. The pin 421 of the inner core 42, as the sensing element of the temperature and pressure gauge 9, passes downward through the central shaft 44 and its lid 2, and can extend into the quick-release nut 40 inside the pot body 1, facilitating accurate measurement of the temperature and pressure parameters inside the pot body.

[0028] The fan-shaped rotating tooth block 6 is fan-shaped, and the arc surface of the fan-shaped rotating tooth block 6 is formed with a tooth surface that matches the arc-shaped tooth 51 surface of the central rotating tooth block 5. The outer end of the fan-shaped rotating tooth block 6 is provided with a connecting countersunk hole 62. The lower surface of the panel assembly 3 is formed with a corresponding connecting protrusion 34. A fixing copper nut is embedded in the connecting protrusion 34. The fan-shaped rotating tooth block 6 is rotatably sleeved on the connecting protrusion 34 through the connecting countersunk hole. There is also a connecting screw. The fan-shaped rotating tooth block 6 and the panel assembly 3 are rotatably connected by screwing the connecting screw into the inner hole of the connecting protrusion 34. The mounting groove 21 is a rectangular structure with curved sides. A circular concave surface 23 is formed in the middle of the upper surface of the pot lid 2. The mounting groove 21 is recessed in the circular concave surface 23. The short sides of the left and right sides of the mounting groove 21 are connected to the circular concave surface 23. This recessed structure provides installation space for the transmission mechanism. The fan-shaped rotating tooth block 6 is sleeved on the drive pin 20 and meshes with the central rotating tooth block 5. During the relative movement of the panel assembly and the pot lid, the mounting groove 21 will not appear outside the panel assembly 3, while providing space to accommodate the movement of the fan-shaped rotating tooth block 6.

[0029] Positioning seats 7, corresponding to the handles 11 on the left and right sides of the pot body 1, are installed on the left and right ends of the panel assembly 3. The positioning seats 7 are connected to the left and right ends of the panel assembly 3 by screws. The positioning seats 7 are adapted to the receiving cavities on the surface of the handles 11. Furthermore, there is a positioning structure between the positioning seats 7 and the handles 11. Typically, this positioning structure can adopt a relatively simple positioning groove and positioning block matching structure. In this embodiment, a positioning groove 74 is opened on the outer surface of the positioning seat 7. Correspondingly, a positioning block 111 is set in the middle of the handles 11, so that the panel assembly 3 can be positioned on the handles 11 of the pot body 1 and cannot rotate, making it convenient to operate the knob to rotate the pot lid 2. A shaped connecting pin 10 is welded to the left and right sides of the upper surface of the pot lid 2. The positioning seat 7 has an arc-shaped groove 71 for the shaped connecting pin 10 to pass through and for its rotation to be limited. One side of the arc-shaped groove 71 is formed into a circular opening 72. A disassembly button mechanism 8 is provided on the outer side of the positioning seat 7. The disassembly button mechanism 8 includes a button 81, a retaining plate 82, and a spring 83. The button 81 is installed and connected to the receiving groove 73 of the positioning seat 7 via a connecting shaft 85. The upper end of the button 81 has an opening. Correspondingly, the retaining plate 82 is arranged on the positioning seat 7 and can move left and right. The surface of the retaining plate 82 has a notch for the upper end of the button 81 to pass through. The notch 84 has a connecting pin above it, which is inserted into the opening at the upper end of the button 81. Furthermore, the spring 83 between the retaining plate 82 and the spring seat on the positioning seat 7 keeps the retaining plate 82 always moving to one side, covering part of the circular opening 72, thereby preventing the connecting pin 10 from coming out. In this way, when the lid 2 is opened and closed, the I-shaped connecting pin 10 moves in the arc-shaped retaining groove 70. When the lid is open, the I-shaped connecting pin 10 is aligned with the circular opening 72 of the arc-shaped retaining groove 71. By pressing the disassembly button 81 inward, the I-shaped connecting pin 10 can come out from the circular opening 72, thereby removing the panel assembly 3 from the lid 2. A float valve and a safety valve are installed on the left and right sides of the lid 2, respectively. A through hole 33 is opened on the left end of the panel assembly 3 for the indicator rod 25 of the float valve to pass through. In this way, only when the lid 2 and the pot body 1 are closed can the through hole 33 of the panel assembly be aligned with the float valve, and the pressure cooker can pressurize, thereby achieving a safety protection effect.

[0030] The lid 2 is also equipped with an integrated temperature and pressure gauge 9, which is a two-function instrument for measuring temperature and pressure. The temperature and pressure gauge 9 is usually arranged in the knob housing 41 and becomes the main part of the inner core 42. In this way, the temperature and pressure gauge 9 can be fixed together with the lid 2 through the connecting shaft, positioning plate and quick release nut 40.

[0031] The structure and installation of temperature and pressure gauges 9, float valves, and safety valves are consistent with existing technology and will not be described in detail here.

[0032] To open the lid 2, turn the knob 41 clockwise, as shown. Figure 4As shown, the central rotating toothed block 5 rotates synchronously, driving the two sector-shaped rotating toothed blocks 6 to rotate counterclockwise, which in turn drives the pot lid 2 to rotate clockwise via the drive pin 20, thus achieving the closing of the lid.

[0033] When the lid 2 needs to be closed, turn the knob shell 41 counterclockwise. The central rotating tooth block 5 rotates synchronously, driving the two fan-shaped rotating tooth blocks 6 to rotate clockwise. Through the drive pin 20, the lid 2 is driven to rotate counterclockwise, thus opening the lid.

[0034] See Figure 9 When the panel assembly 3 needs to be disassembled for cleaning, turn the knob housing 41 counterclockwise. First, open the lid as described above, remove the pot lid 2, unscrew the quick-release nut 40, and press the disassembly button 81 with both hands simultaneously. At this time, the I-shaped connecting pin 10 of the pot lid 2 will disengage from the arc-shaped slot 71 of the positioning seat 7, and the panel assembly 3 will separate from the pot lid 2 for easy cleaning. When the panel assembly 3 needs to be installed, align the panel assembly 3 with the I-shaped connecting pin 10 and the drive pin 20 on the pot lid. Then, pass the lower end of the central shaft 44 with the temperature and pressure gauge 9 through the knob housing 41, the central rotating tooth block 5, and the positioning piece 24 on the pot lid 2 on the panel assembly 3, and connect and fix it with the matching quick-release nut 40. Connect the temperature and pressure gauge 9, the central shaft 44, and the pot lid 2 together. Then, the pot lid 2 will be positioned by the positioning seat 7 on the panel assembly 3 and the handle 11 on the pot body 1. Install the pot lid 2 on the pot body 1 and turn the knob housing 41 clockwise to make the pot lid 2 and the pot body 1 snap together.

[0035] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A screw-on pressure cooker, comprising a pot body, a pot lid, and a panel assembly, wherein the upper end of the pot body is provided with a plurality of pot teeth along its circumference, and correspondingly, the pot lid is provided with a plurality of lid teeth along its circumference; the lid teeth and pot teeth are engaged by rotation to lock the pot lid onto the pot body; the panel assembly is radially mounted on the pot lid, and the pot lid and the panel assembly are rotatable relative to each other, characterized in that: A knob is installed in the center of the upper surface of the panel assembly. The knob includes a knob shell and an inner core. A mounting groove is formed in the center of the upper surface of the pot lid. A central rotating tooth block and two fan-shaped rotating tooth blocks are provided in the mounting groove. The central rotating tooth block is connected to the knob shell and can rotate synchronously with the knob shell. The left and right sides of the central rotating tooth block are formed with arc-shaped tooth surfaces. One end of the fan-shaped rotating tooth block is rotatably connected to the panel assembly, and the other end is engaged with the central rotating tooth block. A through waist-shaped hole is opened on the fan-shaped rotating tooth block. A corresponding drive pin is protruding in the mounting groove. The drive pin on the pot lid and the through waist-shaped hole of the fan-shaped rotating tooth block are movably engaged. When the knob shell is rotated clockwise, the central rotating tooth block rotates synchronously, driving the two fan-shaped rotating tooth blocks to rotate counterclockwise. The drive pin drives the pot lid to rotate clockwise to close the lid. Otherwise, it rotates in the opposite direction to open the lid.

2. The screw-on pressure cooker according to claim 1, characterized in that: The panel assembly is detachably mounted on the pot lid.

3. The screw-on pressure cooker according to claim 2, characterized in that: The inner core is built into the knob housing. The lower end of the inner core has a central shaft. The center of the panel assembly has a central hole for the central shaft to pass through. The center of the central rotating gear block and the center of the pot lid have corresponding through holes. The pot lid has a fixed positioning piece welded to the through hole at the center. The lower end of the central shaft passes through the panel assembly, the central rotating gear block and the pot lid and is connected and fixed with the matching quick-release nut. The lower end of the knob housing has a protruding connecting post. The front and rear sides of the center hole on the panel assembly have corresponding arc-shaped limiting holes for the connecting post to pass through. The front and rear sides of the central rotating gear block have connecting holes. There are also connecting screws that pass through the connecting holes of the central rotating gear block from bottom to top and are connected to the connecting post.

4. The screw-on pressure cooker according to claim 3, characterized in that: The knob housing is a circular shell with an opening at the top. The inner core is set inside the knob housing. The lower end of the knob housing has a circular hole for the central shaft to pass through. After the inner core is assembled and positioned, its upper surface is basically flush with the knob housing. The surface of the knob housing has three-dimensional markings for opening and closing the cover. Correspondingly, the surface of the panel assembly has matching engraving lines.

5. The screw-on pressure cooker according to claim 4, characterized in that: An integrated temperature and pressure gauge is installed on the pot lid. The temperature and pressure gauge is the inner core and is fixed to the pot lid by a central shaft, a positioning plate, and a quick-release nut. The pin of the inner core serves as the detection element of the temperature and pressure gauge, passing downward through the central shaft and the pot lid, and extending into the quick-release nut inside the pot body.

6. The screw-on pressure cooker according to claim 1, characterized in that: The fan-shaped rotating tooth block is fan-shaped, and the arc surface of the fan-shaped rotating tooth block is formed with a tooth surface that matches the arc-shaped tooth surface of the central rotating tooth block. The outer end of the fan-shaped rotating tooth block is provided with a connecting countersunk hole, and the lower surface of the panel assembly is formed with a corresponding connecting protrusion. The fan-shaped rotating tooth block is rotatably fitted onto the connecting protrusion through the connecting countersunk hole. There is also a connecting screw, which is screwed into the inner hole of the connecting protrusion to achieve a rotatable connection between the fan-shaped rotating tooth block and the panel assembly.

7. The screw-on pressure cooker according to claim 6, characterized in that: The mounting groove is a rectangular structure with arc-shaped sides. A circular concave surface is formed in the middle of the upper surface of the pot lid. The mounting groove is recessed in the circular concave surface. The short sides of the left and right sides of the mounting groove are connected to the circular concave surface. The fan-shaped rotating tooth block is sleeved on the drive pin and meshes with the central rotating tooth block.

8. The screw-on pressure cooker according to any one of claims 1 to 7, characterized in that: The panel assembly has positioning seats at its left and right ends, corresponding to the handles on the left and right sides of the pot body. An I-shaped connecting pin is welded to the left and right sides of the upper surface of the pot lid. The positioning seat has an arc-shaped groove for the I-shaped connecting pin to pass through and for limiting its rotation. One side of the arc-shaped groove is formed into a circular opening. A disassembly button mechanism is provided on the outside of the positioning seat. When the pot lid is opened or closed, the I-shaped connecting pin moves in the arc-shaped groove. When the lid is open, the I-shaped connecting pin is aligned with the circular opening of the arc-shaped groove. Pressing the disassembly button mechanism inward will allow the I-shaped connecting pin to come out of the circular opening.

9. The screw-on pressure cooker according to claim 8, characterized in that: The disassembly button mechanism includes a button, a retaining plate, and a spring. The button is mounted in the receiving groove of the positioning seat using a shaft connection. The button has an opening at its upper end. Correspondingly, the retaining plate is arranged on the positioning seat and can move left and right. The surface of the retaining plate has a notch for the upper end of the button to pass through. Above the notch is a connecting pin that is inserted into the opening at the upper end of the button. Furthermore, a supporting spring is located between the retaining plate and the spring seat on the positioning seat, so that the retaining plate always maintains a tendency to move to one side, covering part of the circular opening, thereby preventing the I-shaped connecting pin from coming out.

10. The spin-on pressure cooker according to claim 9, characterized in that: The outer surface of the positioning seat has a positioning groove, and correspondingly, a positioning block is set in the middle of the handle so that the panel assembly is positioned on the handle of the pot body and cannot be rotated.

Images