A new type of segmented steam exhaust structure for pressure cookers

Abstract

The application discloses a new segmented steam exhaust structure for a pressure cooker. By setting a double lever structure and combining the rotation path of the actuator, the selective triggering of different steam exhaust caps is realized. The function of adjusting the height of a single component is transformed into a hierarchical control mode completed by multiple components, greatly enhancing the process fault tolerance and action stability of the structure. In addition, the structure also improves the operation convenience and feedback of the user, making the switching between different steam exhaust modes more intuitive and reliable. It fundamentally improves the common defects of steam exhaust failure and poor steam exhaust in the prior art, and has significant technical progress and practical value.

Description

Technical Field

[0001] This utility model belongs to the field of pressure cooker technology, and in particular relates to a novel segmented steam exhaust structure for pressure cookers. Background Technology

[0002] Currently, commercially available pressure cookers generally use a single lever structure for their segmented steam venting devices, controlling different steam venting volumes by adjusting the opening height of a single vent cap. However, this design has significant drawbacks: its height adjustment mechanism is extremely sensitive to the machining precision of parts and assembly errors. For example, minute deviations in lever length, knob transmission ratio, and contact surface flatness can all lead to inaccurate trigger height positions, resulting in malfunction of the segmented steam venting function or insufficient steam venting. Furthermore, due to the lack of a redundant linkage mechanism, users find it difficult to obtain clear feedback on the venting level, easily leading to misoperation or incomplete adjustment, further exacerbating the risk of unstable steam venting. Utility Model Content

[0003] (a) Purpose of the utility model To overcome the above shortcomings, the purpose of this utility model is to provide a new segmented steam exhaust structure for pressure cookers, which solves the technical problems of single lever structures being too sensitive to the precision of parts and assembly errors, leading to inaccurate steam exhaust control and steam exhaust failure; at the same time, the lack of a mechanical gear feedback mechanism causes user misoperation and unstable steam exhaust.

[0004] (II) Technical Solution To achieve the above objectives, the technical solution provided in this application is as follows: A novel segmented steam venting structure for a pressure cooker includes: a rotatable segmented knob, an actuating element connected below the segmented knob and rotating synchronously therewith, and a first and second levers oscillatingly mounted below the actuating element. The first and second levers are spaced apart along the rotation direction of the actuating element, and each lever has a first end close to the actuating element and corresponding to the movement trajectory of the actuating element, and a second end away from the actuating element and corresponding to the first and second steam vent caps, respectively. When the actuating element rotates, it selectively compresses: only the first end of the first lever causes its second end to swing upward, triggering the opening of the first steam vent cap; or the first ends of the first and second levers are simultaneously compressed, causing both second ends to swing upward, triggering the synchronous opening of the first and second steam vent caps.

[0005] This embodiment achieves selective triggering of different exhaust caps by setting up a double-lever structure and combining it with the rotation path of the actuating component. This transforms the original function, which relied on a single component for height adjustment, into a hierarchical control method completed collaboratively by multiple components, greatly enhancing the structure's process tolerance and operational stability. Furthermore, this structure improves user convenience and feedback, making switching between different exhaust modes more intuitive and reliable. It fundamentally improves upon common defects in existing technologies, such as exhaust failure and poor exhaust, demonstrating significant technological advancement and practical value.

[0006] In some embodiments, two pins are respectively provided corresponding to the positions of the first and second lifting rods, and the bottom surfaces of the first and second lifting rods are provided with arc-shaped grooves that are sleeved on the pins and rotate about their axial direction.

[0007] By introducing a limiting structure with a pin and an arc-shaped groove, this embodiment significantly improves the stability and repeatability of the lever action, reducing the risk of operational failure due to component wobbling or misalignment. Simultaneously, this structure also possesses good assembly adaptability, reducing process requirements during manufacturing and further enhancing product consistency and durability.

[0008] In some embodiments, the actuator has a radially extending cam portion, and the first ends of the first and second levers are provided with protrusions that match the profile of the cam portion.

[0009] The use of a matching structure of cam and protrusion makes the push of the lever by the actuating component smoother and more controllable, improving the response sensitivity and consistency of the action during the opening of the vent cap.

[0010] In some embodiments, the convex surface is a wedge-shaped structure.

[0011] While maintaining structural simplicity, the wedge-shaped convex surface structure, with its beveled sides, provides a guiding transition when the actuating component rotates past the convex surface, preventing interference with its rotation. This significantly improves the efficiency of the actuating component's driving force conversion on the lever, resulting in faster and less strenuous opening of the vent cap. Furthermore, this improvement helps reduce the force required for user operation, enhancing comfort and further improving the overall stability and response speed of the device. In some embodiments, the toggle member has a radially extending limiting portion on the edge opposite to the cam portion, and further includes two limiting posts distributed on both sides of the toggle member's rotation trajectory, and when the limiting portion or the cam portion abuts against either limiting post, the cam portion is in a position that only contacts the first lever protrusion, contacts both lever protrusions at the same time, or is separated from both protrusions.

[0012] The mating structure of the limiting post and the limiting part provides a clear mechanical limiting point for the segmented exhaust device, ensuring that the actuating element accurately triggers the corresponding exhaust mode at the preset position. This not only improves the accuracy of user operation but also effectively prevents abnormal exhaust caused by misoperation, enhancing the safety and reliability of the system. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the novel segmented steam exhaust structure for pressure cookers of this utility model installed on the pressure cooker; Figure 2 This is a schematic diagram of the structure of the pressure cooker with the new segmented steam exhaust structure installed on the default upper cover of the pressure cooker. Figure 3 This is a cross-sectional view of the novel segmented steam exhaust structure for the pressure cooker of this utility model installed on the pressure cooker; Figure 4 This is a schematic diagram of the novel segmented steam exhaust structure for the pressure cooker of this utility model; Figure 5 This is an assembly diagram of the segmented knob and toggle component in the novel segmented steam exhaust structure for the pressure cooker of this utility model; Figure 6 This is a schematic diagram of the actuating component in the novel segmented steam exhaust structure for the pressure cooker of this utility model; Figure 7 This is an assembly diagram of the first lifting rod and the pin in the novel segmented steam exhaust structure for the pressure cooker of this utility model.

[0014] Figure label: 1. Handle; 101. Gear position indicator; 2. Segmented knob; 3. Actuator; 301. Cam part; 302. Limiting part; 4. First lever; 401. First end; 4011. Raised surface; 402. Second end; 403. Arc-shaped groove; 5. Pin; 6. First row of steam caps; 7. Second lever; 8. Second row of steam caps; 9. Exhaust pipe; 10. Sealing gasket; 1001. Push column. Detailed Implementation

[0015] 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 specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0016] This utility model provides a novel segmented steam venting structure for a pressure cooker, comprising: a segmented knob 2, a toggle element 3, and a double lever assembly. Specifically, the pressure cooker lid assembly includes an inner liner lid and an outer lid, forming an installation cavity between them. A handle 1 is provided on the top of the outer lid, serving as a basic support structure. The segmented knob 2 is installed through an opening on its top. This knob extends into the installation cavity via a central pivot and is fixedly connected to the toggle element 3 below, thereby achieving synchronous rotation. Furthermore, a first lever 4 and a second lever 7 are oscillatingly mounted on the top of the inner liner lid below the toggle element 3, and are spaced apart along the rotation direction of the toggle element 3. It is worth noting that the pressure cooker lid assembly is provided with a first row of steam caps 6 and a second row of steam caps 8. The lower ends of the first row of steam caps 6 and the second row of steam caps 8 can extend into the mounting cavity, or be located above the outer lid without extending into the mounting cavity. They are linked with each lever through a linkage component. Specifically, each lever is divided into a first end 401 and a second end 402: the first end 401 is adjacent to the actuating component 3 and overlaps with its movement trajectory, while the second end 402 corresponds to the bottom of the first row of steam caps 6 and the second row of steam caps 8, respectively. A gear position indicator 101 is provided on the upper surface of the handle 1. When the user rotates the segmented knob 2 to the corresponding gear position, the actuating element 3 selectively compresses the levers. For example, in the first gear position, the actuating element 3 does not compress the first end 401 of the first lever 4 and the second lever 7, and both the first row of steam caps 6 and the second row of steam caps 8 are in the closed state. When the segmented knob 2 is rotated to the second gear position, the actuating element 3 only compresses the first end 401 of the first lever 4, causing its second end 402 to rise and trigger the opening of the first row of steam caps 6. When rotating further to the third gear position, the first ends 401 of both levers are compressed simultaneously, causing both rows of steam caps to open synchronously. In this way, mechanical graded control replaces the traditional single-lever height adjustment, significantly improving operational stability.

[0017] Specifically, the first row of steam caps 6 and the second row of steam caps 8 have the same structure. They are both fitted onto the steam vent pipe 9 of the pressure cooker. Initially, they both block the steam vent of the steam vent pipe 9. When the first lever 4 or the second lever 7 moves the first row of steam caps 6 and the second row of steam caps 8 upwards, the steam vent of the steam vent pipe 9 is opened, and the steam from the pressure cooker can be discharged outwards.

[0018] In the embodiment where the lower ends of the first row of gas caps 6 and the second row of gas caps 8 extend into the mounting cavity, the second ends 402 of the first and second lifting rods 4 and 7 can be directly lifted when they swing upward.

[0019] In the embodiment where the lower ends of the first row of steam caps 6 and the second row of steam caps 8 are located above the outer cover, this application provides a sealing gasket 10 on the outer cover. The sealing gasket 10 is located below the first row of steam caps 6 and the second row of steam caps 8, and multiple push-up columns 1001 are provided on the sealing gasket 10. The top of the push-up column 1001 corresponds exactly to the bottom of the steam vent cap, and extends downward into the space (installation cavity) inside the pot cover. When the second end 402 of the first lever 4 and the second lever 7 swings upward, it can push the push-up column 1001 upward. The elastic deformation of the push-up column 1001 causes it to bulge upward, which can lift the steam vent cap, allowing steam to be discharged. After the steam is discharged, the pushing force disappears, and the elastic sealing gasket 10 will shrink and return to its original shape. The push-up column 1001 moves downward, and the steam vent cap re-seals the opening of the steam vent pipe 9. Specifically, an installation groove can be opened on the outer cover for the sealing gasket 10 to be embedded and its edges pressed tightly.

[0020] Specifically, this application provides two pins 5, which are fixed to the pressure cooker lid by a mounting base. An arc-shaped groove 403 is provided on the bottom surface of the first lever 4 and the second lever 7. The width of the groove is slightly larger than the diameter of the pin 5 (about 0.5 mm gap), so that the arc-shaped groove 403 can fit into the pin 5 and the first lever 4 and the second lever 7 can swing around the pin 5 to trigger the opening of the first row of steam caps 6 or the second row of steam caps 8.

[0021] Furthermore, the bottom of the limiting member 3 is integrally formed with a radially extending cam portion 301, the cam portion 301 having an eccentric wheel structure in cross-section. Correspondingly, the first ends 401 of the first lever 4 and the second lever 7 are stamped to form a protruding surface 4011 that matches the cam profile. When the cam portion 301 rotates and contacts the protruding surface 4011, a smooth downward pressure is achieved through a continuous curved surface transition, avoiding the impact noise generated by traditional right-angle contact.

[0022] The configuration of the protruding surface 4011 is specially optimized: the aforementioned protruding surface 4011 is machined into a wedge-shaped structure, and its inclined angle is controlled between 15° and 30°. Preferably, a 20° inclined angle design is adopted. In this way, when the cam part 301 slides over the protruding surface 4011, the inclined surface generates a guiding force, which reduces the swing resistance of the boom by about 40% and reduces the wear of the cam part 301.

[0023] Based on this, this application adds a radially extending limiting part 302 to the edge of the actuating member 3 opposite to the edge of the cam part 301, and symmetrically screws two limiting posts onto the pressure cooker lid assembly. Specifically, when the cam part 301 contacts the first limiting post, the cam part 301 does not contact the protruding surfaces 4011 of the first lever 4 and the second lever 7. When the actuating member 3 rotates counterclockwise and the cam part 301 moves away from the first limiting post and the limiting part 302 does not contact the second limiting post, the cam part 301 only contacts the protruding surface 4011 of the first lever 4. When the actuating member 3 rotates counterclockwise again and the limiting part 302 contacts the second limiting post, the cam part 301 simultaneously presses against the protruding surfaces 4011 of both levers. In this way, the precise switching of the three exhaust states is ensured by mechanical hard limiting, and the user can clearly feel the gear shifting during operation.

[0024] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A novel segmented steam venting structure for a pressure cooker, characterized in that, include: A rotatable segmented knob (2), a toggle (3) connected below the segmented knob (2) and rotating synchronously therewith, and a first lever (4) and a second lever (7) oscillatingly mounted below the toggle (3), wherein the first lever (4) and the second lever (7) are spaced apart along the rotation direction of the toggle (3), and each lever has a first end (401) close to the toggle (3) and corresponding to the movement trajectory of the toggle (3) and a second end (402) away from the toggle (3) and corresponding to the first row of steam caps (6) and the second row of steam caps (8) respectively; wherein, when the toggle (3) rotates, selectively squeezes: only the first end (401) of the first lever (4) causes its second end (402) to swing upward to trigger the opening of the first row of steam caps (6), or simultaneously squeezes the first ends (401) of the first lever (4) and the second lever (7) to cause the two second ends (402) to swing upward to trigger the opening of the first row of steam caps (6) and the second row of steam caps (8).

2. The novel segmented steam exhaust structure for a pressure cooker as described in claim 1, characterized in that, Also includes: Two pins (5) are respectively set at the positions of the first lifting rod (4) and the second lifting rod (7), and the bottom surface of the first lifting rod (4) and the second lifting rod (7) is provided with an arc-shaped groove (403) that is sleeved on the pins (5) and rotates around its axis.

3. The novel segmented steam exhaust structure for a pressure cooker as described in claim 1, characterized in that, The actuating member (3) has a radially extending cam portion (301), and the first end (401) of the first lever (4) and the second lever (7) is provided with a protruding surface (4011) that matches the contour of the cam portion (301).

4. The novel segmented steam exhaust structure for a pressure cooker as described in claim 3, characterized in that, The protruding surface (4011) has a wedge-shaped structure.

5. The novel segmented steam exhaust structure for a pressure cooker as described in claim 3 or 4, characterized in that, The actuating member (3) has a radially extending limiting part (302) on the edge opposite to the cam part (301), and also includes two limiting posts distributed on both sides of the rotation trajectory of the actuating member (3). When the limiting part (302) or the cam part (301) abuts against either limiting post, the cam part (301) is in a position that only contacts the first lifting rod (4011) protrusion, simultaneously contacts both lifting rod protrusions (4011), or is separated from both protrusions (4011).

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