A screw type long handle structure pressure cooker

Abstract

The utility model relates to a screwing long handle structure pressure cooker, including fixed installation on the upper handle of the pot cover and fixed installation on the lower handle of the pot body, the pot cover inner wall fixed mounting has the sealing ring, the upper handle is along the same axis direction horizontal sliding installation has self -locking plate and pressure relief sliding block, self -locking plate and pressure relief sliding block all are along the radial sliding of pot cover arrangement, the one end of self -locking plate with pressure relief sliding block is located sealing ring, and with self -locking plate horizontal sliding connection, the one end of pressure relief sliding block is provided with the jackscrew to sealing ring, the pot cover is equipped with the pressure relief hole with the jackscrew coaxial, the jackscrew slides and is equipped in pressure relief hole, set up the elastic piece between pressure relief sliding block and self -locking plate. After adopting such scheme, can realize the multiple safety protection of automatic locking, pressure forced location and not closed pressure rise of closing, effectively avoid the security risk such as the pot explosion, steam spatter of the misoperation, significantly improve the use safety and reliability.

Description

Technical Field

[0001] This utility model relates to the field of pressure cooker technology, and in particular to a pressure cooker with a screw-on long handle structure. Background Technology

[0002] Pressure cookers, as indispensable cooking appliances in modern kitchens, are widely used due to their high efficiency and energy saving. The handle, a key component of the pressure cooker, not only supports and moves the entire pot but also serves as the core operating interface for opening and closing the lid, pressure control, and safety interlocks. Therefore, the rationality and reliability of its design directly affect the user experience and personal safety.

[0003] Most pressure cooker handles on the market today rely on simple mechanical interlocking structures for safety. The common working principle is that when there is high pressure inside the pot, the pressure pushes an internal float valve upward, physically blocking the handle's movement and thus achieving the basic safety function of "no opening under pressure." While this mechanism can prevent accidental operation to some extent, its design still has certain limitations.

[0004] Existing mechanical interlocking structures mostly rely on a single spring. However, the safety logic of this structure is entirely passive, and users cannot actively control the working state of the spring. As a vulnerable component, once the spring fails, the entire interlocking mechanism becomes ineffective, posing a significant safety hazard.

[0005] Furthermore, most traditional designs lack active detection of the lid's sealing status. When the lid is not fully closed or properly locked, the system cannot recognize such anomalies and still allows heating and pressurization. In this situation, the internal pressure may push the lid off, causing steam to escape, food to splatter, or even causing a pot explosion, resulting in a significant blind spot in safety protection. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a screw-on long handle pressure cooker that can realize multiple safety protections such as automatic locking when the lid is closed, forced limit under pressure, and anti-pressure rise when not closed. It effectively avoids safety hazards such as pot explosion and steam splash caused by misoperation, and significantly improves the safety and reliability of use.

[0007] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0008] A screw-on long-handle pressure cooker includes an upper handle fixedly mounted on a lid and a lower handle fixedly mounted on a pot body. A sealing ring is fixedly mounted on the inner wall of the lid. A self-locking plate and a pressure relief slider are horizontally slidably mounted inside the upper handle along the same axial direction. Both the self-locking plate and the pressure relief slider are slidably arranged radially along the lid. The pressure relief slider is located at the end of the self-locking plate facing the sealing ring and is horizontally slidably connected to the self-locking plate. A push rod is provided at the end of the pressure relief slider facing the sealing ring. A pressure relief hole coaxial with the push rod is provided on the lid. The push rod slidably passes through the pressure relief hole. An elastic element is provided between the pressure relief slider and the self-locking plate.

[0009] The lower handle is provided with an open slide groove, which gradually narrows inward from the open end on the outside of the lower handle to form a guide slope. The lower ends of the self-locking plate and the pressure relief slider can slide along the guide slope. The closed end of the open slide groove and the side away from the pot lid is provided with a slot. When the upper handle and the lower handle are fully engaged, the lower end of the self-locking plate is engaged in the slot.

[0010] The principle of this solution is as follows: When the upper and lower handles are not engaged or not fully engaged, the pressure relief slider inside the upper handle, under the elastic action of the elastic element, always extends towards the sealing ring. Its front end push rod passes through the pressure relief hole on the lid and presses against the sealing ring on the inner wall of the lid, preventing the sealing ring from completely adhering to the edge of the pot, thus preventing an effective seal between the pot and the lid. At this time, even if heating and pressurization occur, the gas inside the pot can naturally escape through the pressure relief hole and the sealing gap. When the user rotates and engages the lid with the pot, the upper handle and the lower handle fixed to the pot gradually align. The open groove on the lower handle has a guide slope that gradually narrows from the outside to the inside. The lower ends of the self-locking plate and the pressure relief slider slide along this slope, and under the squeezing action of the slope, overcome the elastic force of the elastic element, causing the pressure relief slider to retract towards the self-locking plate, and the push rod to disengage from the sealing ring. When the upper and lower handles are fully engaged, the lower end of the self-locking plate slides into the groove at the closed end of the open slide groove, achieving axial locking. At this time, the push rod completely disengages from the sealing ring, allowing the sealing ring to fit tightly against the pot body and lid, forming a complete seal. When it is necessary to open the lid, the user must first manually push the self-locking plate to overcome the limiting effect of the groove and slide it towards the center of the lid, thereby disengaging the lower end of the self-locking plate from the groove and releasing the locked state. As the self-locking plate moves, the pressure relief slider extends outward synchronously under the restoring force of the elastic element, and the push rod reopens the sealing ring.

[0011] The pressure cooker handle structure provided by this application realizes the linkage control of the closed state of the pot lid and the sealing function through the coordinated cooperation of the self-locking plate, the pressure relief slider and the opening chute of the lower handle. When the pot lid is not fully buckled, the pressure relief slider pushes open the sealing ring under the action of the elastic member, effectively avoiding steam splashing or pot explosion accidents caused by the lid not being locked tightly; when the upper and lower handles are fully buckled, the self-locking plate automatically snaps into the card slot to achieve mechanical locking, ensuring that the pot lid cannot be accidentally opened during the pressure boosting process; when opening the lid, the self-locking plate needs to be manually unlocked, and at the same time when moving the upper handle, the pressure relief slider resets to push open the sealing ring, restoring the function of "the pressure cannot be boosted without sealing".

[0012] Preferably, a push button is slidably installed at the upper end of the upper handle, and the lower end of the push button is fixedly connected to the self-locking plate. In this way, when the upper handle and the lower handle are fully buckled, the push button and the self-locking plate will automatically move backward at the same time, and the lower end of the self-locking plate will be locked with the card slot. If the push button is not pushed forward, the pot lid cannot be opened. When the pressure in the pot is completely released (i.e., the float valve drops), the user needs to manually push the push button forward,带动与其固定连接的自锁板同步移动,使其下端脱离卡槽,实现解锁,方可旋转或提起锅盖。该设计将解锁操作集中于推钮,操作直观、动作明确,有效防止误操作。重要的是,本结构实现了从被动防护到主动控制的安全升级。推钮、自锁板与卡槽形成的机械锁定机构构成第二重安全防线,其独立于浮子阀等压力传感部件。即便浮子阀失效,只要用户不主动推动推钮,自锁板仍可被卡槽牢牢锁定,锅盖无法解锁或转动,确保了极端情况下的使用安全。

[0013] Preferably, a guiding support rod is fixedly arranged on the self-locking plate, the extending direction of the guiding support rod is consistent with the moving direction of the pressure relief slider, the pressure relief slider is slidably sleeved outside the guiding support rod, the elastic member is a compression spring and is sleeved on the guiding support rod, and one end of the compression spring abuts against the pressure relief slider and the other end abuts against the self-locking plate. In this way, the guiding support rod can effectively restrict the movement trajectories of the pressure relief slider and the compression spring, ensuring that the pressure relief slider can play its role stably; at the same time, it can also prevent the spring from bending, twisting or coming out during the compression and rebound processes, ensuring the stable transmission of the elastic force.

[0014] Preferably, first sliding parts and second sliding parts are respectively fixedly arranged at the lower ends of the self-locking plate and the pressure relief slider, both the first sliding parts and the second sliding parts can be embedded into the opening chute and can slide along the guiding inclined plane, and the first sliding parts can be engaged into the card slot. Among them, the first sliding parts and the second sliding parts can be sliding columns or sliders extending downward from the lower parts of the self-locking plate and the pressure relief slider. In this way, the movement guiding accuracy and structural stability of the self-locking plate and the pressure relief slider during the buckling and unlocking processes are effectively improved. The cooperation between the first sliding parts and the card slot realizes reliable locking, ensuring that the pot lid cannot be accidentally opened during the pressure boosting state.

[0015] Preferably, the device further includes an upper handle bottom cover, which is fixedly installed at the bottom of the upper handle. The self-locking plate and the pressure relief slider both rest within the upper handle bottom cover, and the first sliding part and the second sliding part both pass through the upper handle bottom cover and slide in cooperation with it. This effectively prevents unnecessary movement or displacement of the self-locking plate and the pressure relief slider within the upper handle, while providing precise guidance for their sliding movement, ensuring reliable operation and smooth running.

[0016] Preferably, the lid is equipped with a float valve located on the movement path of the self-locking plate. When pressure is present inside the pot, the float valve rises under pressure and extends into the movement path of the self-locking plate, physically blocking its sliding and mechanically locking the handle to prevent accidental opening by the user. This structure directly links pressure detection with mechanical locking; even if the user attempts to push the push button or the self-locking plate, the float valve will prevent unlocking, further enhancing safety under high pressure. Combined with the mechanical interlock of the handle itself, this achieves multiple safety guarantees of "pressure self-locking + manual unlocking," effectively mitigating the potential failure risks of a single mechanism and significantly enhancing the overall safety of the pressure cooker.

[0017] In summary, this type of screw-on long-handle pressure cooker provides multiple safety protections, including automatic locking when the lid is closed, forced pressure limiting, and anti-pressure surge protection when not closed. This effectively avoids safety hazards such as pot explosion and steam splashing caused by misoperation, significantly improving safety and reliability. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0019] Figure 1 This is a schematic diagram of the overall structure of the screw-on long handle pressure cooker of this utility model;

[0020] Figure 2 This is a cross-sectional view of the screw-on long handle pressure cooker of this utility model;

[0021] Figure 3 This is a cross-sectional view of the upper handle of the screw-on long handle pressure cooker of this utility model.

[0022] Figure 4 This is a schematic diagram of the lower handle of the screw-on long handle pressure cooker of this utility model;

[0023] Figure 5 This is a schematic diagram showing the installation of the self-locking plate, pressure relief slider, and upper handle bottom cover in the screw-on long handle pressure cooker of this utility model.

[0024] Figure 6 This is a diagram showing the connection relationship between the push button and the self-locking plate in the screw-on long handle pressure cooker of this utility model.

[0025] Figure 7 This is a schematic diagram of the lid of the screw-on long handle pressure cooker described in this utility model.

[0026] in:

[0027] 1- Upper handle; 11- Bottom cover of upper handle;

[0028] 2-Lower handle; 21-Open slide; 211-Slot;

[0029] 3-Self-locking plate; 31-Guide rod; 32-First sliding part;

[0030] 4-Pressure relief slider; 41-Push rod; 42-Second sliding part;

[0031] 5-Pot lid; 51-Pressure relief hole; 52-Float valve;

[0032] 6-Pot body;

[0033] 7-Sealing ring;

[0034] 8-Elastic component;

[0035] 9-Push button. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0037] In the description of this utility model, it should be understood that the orientation and positional relationship indicated by terms such as "up", "down", "left", "right", "front", "back", "vertical", "bottom", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] Reference Figures 1-4 as well as Figure 7As shown, a screw-on long-handle pressure cooker includes an upper handle 1 fixedly installed on a pot lid 5 and a lower handle 2 fixedly installed on a pot body 6. A sealing ring 7 is fixedly installed on the inner wall of the pot lid 5. A self-locking plate 3 and a pressure relief slider 4 are horizontally slidably installed in the upper handle 1 along the same axial direction. Both the self-locking plate 3 and the pressure relief slider 4 are radially slidable along the pot lid 5. The pressure relief slider 4 is located at the end of the self-locking plate 3 facing the sealing ring 7 and is horizontally slidably connected to the self-locking plate 3. A top rod 41 is provided at the end of the pressure relief slider 4 facing the sealing ring 7. A pressure relief hole 51 coaxial with the top rod 41 is provided on the pot lid 5. The top rod 41 slides through the pressure relief hole 51. An elastic element 8 is provided between the pressure relief slider 4 and the self-locking plate 3.

[0039] The lower handle 2 is provided with an open slide groove 21. The open slide groove 21 gradually narrows from the open end on the outside of the lower handle 2 inward to form a guide slope. The lower ends of the self-locking plate 3 and the pressure relief slider 4 can slide along the guide slope. The closed end of the open slide groove 21 and the side away from the pot lid 5 is provided with a slot 211. When the upper handle 1 and the lower handle 2 are fully engaged, the lower end of the self-locking plate 3 is engaged in the slot 211.

[0040] The principle of this solution is as follows: When the upper handle 1 and the lower handle 2 are not engaged or not fully engaged, the pressure relief slider 4 inside the upper handle 1 always extends towards the sealing ring 7 under the elastic action of the elastic element 8. The push rod 41 at its front end passes through the pressure relief hole 51 on the pot lid 5 and presses against the sealing ring 7 on the inner wall of the pot lid 5, preventing the sealing ring 7 from completely fitting against the edge of the pot body 6, thereby preventing an effective seal between the pot body 6 and the pot lid 5. At this time, even if the pressure is increased by heating, the gas inside the pot can be naturally discharged through the pressure relief hole 51 and the sealing gap. When the user rotates the pot lid 5 and engages it with the pot body 6, the upper handle 1 and the lower handle 2 fixed to the pot body 6 gradually engage. The open slide groove 21 on the lower handle 2 has a guide slope that gradually narrows from the outside to the inside. The lower ends of the self-locking plate 3 and the pressure relief slider 4 slide along this slope and, under the squeezing action of the slope, overcome the elastic force of the elastic element 8, causing the pressure relief slider 4 to retract towards the self-locking plate 3, and the push rod 41 disengages from the sealing ring 7. When the upper and lower handles 2 are fully engaged, the lower end of the self-locking plate 3 slides into the groove 211 at the closed end of the open slide groove 21, achieving axial locking. At this time, the push rod 41 completely disengages from the sealing ring 7, allowing the sealing ring 7 to fit tightly against the pot body 6 and the pot lid 5, forming a complete seal. When it is necessary to open the lid, the user must first manually push the self-locking plate 3 to overcome the limiting effect of the groove 211 and slide it towards the center of the pot lid 5, thereby disengaging the lower end of the self-locking plate 3 from the groove 211 and releasing the locked state. As the self-locking plate 3 moves, the pressure relief slider 4 extends outward synchronously under the restoring force of the elastic element 8, and the push rod 41 pushes open the sealing ring 7 again.

[0041] The pressure cooker handle structure provided in this application achieves linkage control between the closed state and sealing function of the lid 5 through the coordinated cooperation of the self-locking plate 3, the pressure relief slider 4, and the opening groove 21 of the lower handle 2. When the lid 5 is not fully closed, the pressure relief slider 4 pushes open the sealing ring 7 under the action of the elastic element 8, effectively preventing steam splashing or pot explosion caused by the lid not being locked. When the upper and lower handles 2 are fully closed, the self-locking plate 3 automatically engages with the slot 211 to achieve mechanical locking, ensuring that the lid 5 cannot be accidentally opened during the pressurization process. When opening the lid, the self-locking plate 3 needs to be unlocked manually. At the same time, when the upper handle 1 is moved, the pressure relief slider 4 resets and pushes open the sealing ring 7, restoring the function of "no pressurization without sealing".

[0042] The upper handle 1 has a push button 9 slidably mounted on its upper end, and the lower end of the push button 9 is fixedly connected to the self-locking plate 3. When the upper handle 1 and lower handle 2 are fully engaged, the push button 9 and the self-locking plate 3 will automatically retract simultaneously, and the lower end of the self-locking plate 3 will lock with the slot 211. If the push button 9 is not pushed forward, the lid 5 cannot be opened. When the pressure inside the pot is completely released (i.e., the float valve 52 falls), the user needs to manually push the push button 9 forward, causing the self-locking plate 3, which is fixedly connected to it, to move synchronously, disengaging its lower end from the slot 211, thus unlocking the lid 5, allowing it to be rotated or lifted. This design centralizes the unlocking operation with the push button 9, making the operation intuitive and the action clear, effectively preventing misoperation. Importantly, this structure achieves a safety upgrade from passive protection to active control. The mechanical locking mechanism formed by the push button 9, the self-locking plate 3, and the slot 211 constitutes a second line of defense, independent of pressure sensing components such as the float valve 52. Even if the float valve 52 fails, as long as the user does not actively push the push button 9, the self-locking plate 3 can still be firmly locked by the slot 211, and the pot lid 5 cannot be unlocked or rotated, ensuring safe use in extreme situations.

[0043] Furthermore, refer to Figure 3 , Figure 5 and Figure 6 As shown, a guide rod 31 is fixedly installed on the self-locking plate 3. The extension direction of the guide rod 31 is consistent with the movement direction of the pressure relief slider 4. The pressure relief slider 4 is slidably sleeved on the guide rod 31. The elastic element 8 is a compression spring and is sleeved on the guide rod 31. One end of the compression spring abuts against the pressure relief slider 4, and the other end abuts against the self-locking plate 3. In this way, the guide rod 31 can effectively constrain the movement trajectory of the pressure relief slider 4 and the compression spring, ensuring that the pressure relief slider 4 can stably perform its function; at the same time, it can also prevent the spring from bending, twisting or dislodging during compression and rebound, ensuring the stable transmission of elastic force.

[0044] Furthermore, refer to Figure 2 and Figure 5As shown, the lower ends of the self-locking plate 3 and the pressure relief slider 4 are respectively fixedly provided with a first sliding part 32 and a second sliding part 42. Both the first sliding part 32 and the second sliding part 42 can be embedded in the open slide groove 21 and can slide along the guide slope. The first sliding part 32 can be engaged in the slot 211. The first sliding part 32 and the second sliding part 42 can be sliding columns or sliders extending downwards from the lower part of the self-locking plate 3 and the pressure relief slider 4. This effectively improves the motion guidance accuracy and structural stability of the self-locking plate 3 and the pressure relief slider 4 during the locking and unlocking process. The cooperation between the first sliding part 32 and the slot 211 achieves reliable locking, ensuring that the pot lid 5 cannot be accidentally opened under pressure.

[0045] Furthermore, refer to Figure 5 As shown, it also includes an upper handle bottom cover 11, which is fixedly installed at the bottom of the upper handle 1. The self-locking plate 3 and the pressure relief slider 4 are both supported inside the upper handle bottom cover 11. The first sliding part 32 and the second sliding part 42 both pass through the upper handle bottom cover 11 and slide with it. In this way, unnecessary movement or displacement of the self-locking plate 3 and the pressure relief slider 4 inside the upper handle 1 is effectively avoided, while providing precise guidance for their sliding movement, ensuring reliable operation and smooth running.

[0046] Furthermore, refer to Figure 2 As shown, a float valve 52 is installed on the lid 5, located on the movement path of the self-locking plate 3. When there is pressure inside the pot, the float valve 52 rises under the pressure and extends into the movement path of the self-locking plate 3, physically blocking the sliding of the self-locking plate 3, thereby mechanically locking the handle and preventing the user from accidentally opening the lid. This structure directly links pressure detection with mechanical locking. Even if the user attempts to push the push button 9 or the self-locking plate 3, the unlocking action cannot be completed due to the obstruction of the float valve 52, further improving the safety protection level under high pressure. Combined with the mechanical interlock of the handle itself, it achieves multiple safety guarantees of "pressure self-locking + manual unlocking," effectively compensating for the potential failure risk of a single mechanism and significantly enhancing the overall safety of the pressure cooker.

[0047] In summary, this type of screw-on long-handle pressure cooker features multiple safety protections, including automatic locking when the lid is closed, forced pressure limiting, and anti-pressure surge protection when not closed. This effectively avoids safety hazards such as pot explosion and steam splashing caused by misoperation, significantly improving safety and reliability.

[0048] In summary, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A screw-on long-handle pressure cooker, comprising an upper handle fixedly mounted on a lid and a lower handle fixedly mounted on a pot body, wherein a sealing ring is fixedly mounted on the inner wall of the lid, characterized in that: A self-locking plate and a pressure relief slider are horizontally slidably installed inside the upper handle along the same axis. Both the self-locking plate and the pressure relief slider are slidably arranged radially along the pot lid. The pressure relief slider is located at the end of the self-locking plate facing the sealing ring and is horizontally slidably connected to the self-locking plate. A push rod is provided at the end of the pressure relief slider facing the sealing ring. The pot lid is provided with a pressure relief hole coaxial with the push rod. The push rod is slidably inserted into the pressure relief hole. An elastic element is provided between the pressure relief slider and the self-locking plate. The lower handle is provided with an open slide groove, which gradually narrows inward from the open end on the outside of the lower handle to form a guide slope. The lower ends of the self-locking plate and the pressure relief slider can slide along the guide slope. The closed end of the open slide groove and the side away from the pot lid is provided with a slot. When the upper handle and the lower handle are fully engaged, the lower end of the self-locking plate is engaged in the slot.

2. The screw-on long-handle pressure cooker according to claim 1, characterized in that: A push button is slidably mounted on the upper end of the upper handle, and the lower end of the push button is fixedly connected to the self-locking plate.

3. The screw-on long-handle pressure cooker according to claim 2, characterized in that: A guide rod is fixedly installed on the self-locking plate. The extension direction of the guide rod is consistent with the movement direction of the pressure relief slider. The pressure relief slider is slidably sleeved on the guide rod. The elastic element is a compression spring and is sleeved on the guide rod. One end of the compression spring abuts against the pressure relief slider, and the other end abuts against the self-locking plate.

4. The screw-on long-handle pressure cooker according to claim 3, characterized in that: The lower ends of the self-locking plate and the pressure relief slider are respectively fixedly provided with a first sliding part and a second sliding part. Both the first sliding part and the second sliding part can be embedded in the open slide groove and can slide along the guide slope. The first sliding part can be engaged into the slot.

5. The screw-on long-handle pressure cooker according to claim 4, characterized in that: It also includes an upper handle bottom cover, which is fixedly installed at the bottom of the upper handle. The self-locking plate and the pressure relief slider are both supported inside the upper handle bottom cover. The first sliding part and the second sliding part both pass through the upper handle bottom cover and slide with it.

6. The screw-on long handle pressure cooker according to claim 1, characterized in that: The pot lid is equipped with a float valve, which is located on the moving path of the self-locking plate.

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