Anti-misoperation safety device for pressure cooker

Abstract

The application discloses a kind of anti-misoperation safety device for pressure cooker, install on pressure cooker, pressure cooker includes pot body and pressure cover, anti-misoperation safety device includes upper buckling device, lower buckling device and anti-misoperation trigger safety device, upper buckling device is arranged on pressure cover with anti-misoperation trigger safety device, lower buckling device is arranged on pot body along pot edge;Pressure cover inside is equipped with sealing ring, when pressure cover is rotated with pot body, lower buckling device triggers anti-misoperation trigger safety device and extrudes or loosens sealing ring.This device can realize the sealing function of pressure cooker or realize exhaust pressure relief function in pot;When there is air pressure in pot, if hard rotation opens pressure cover, under the hard action of second cam and first cam, cause sealing ring extrusion deformation and exhaust quickly, prevent the occurrence of explosion cover fly cover accident.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen cooking utensils, in particular to a misoperation prevention safety device for a pressure cooker. BACKGROUND

[0002] Some pressure cookers on the market are prone to have the cover and the pot in a half-open state during use, causing the pot and the cover to not be tightly closed, resulting in pressure leakage in the pot. Or, during steaming and cooking, if the pressure in the pot is too high and not timely reduced, safety accidents may occur. When in use, the user may not pay attention to whether there is pressure in the pot and directly open the pressure cover, resulting in the condition of cover explosion and flying cover. SUMMARY

[0003] The present application aims to overcome the shortcomings of the prior art and provide a misoperation prevention safety device for a pressure cooker.

[0004] The present application is achieved by the following technical scheme: a misoperation prevention safety device for a pressure cooker, which is installed on the pressure cooker, the pressure cooker comprising a pot body and a pressure cover, the pressure cover being placed above the pot body, the misoperation prevention safety device comprising an upper clamping device, a lower clamping device, and a misoperation prevention trigger safety device, the upper clamping device and the misoperation prevention trigger safety device being arranged on the pressure cover, and the lower clamping device being arranged on the pot body along the pot edge; a sealing ring is installed on the inner side of the pressure cover, when the pressure cover and the pot body rotate, the lower clamping device triggers the misoperation prevention trigger safety device to press or release the sealing ring; when the pressure cover rotates to the position where the upper clamping device and the lower clamping device are clamped, the misoperation prevention trigger safety device releases the sealing ring, and the pressure cooker is in a closed state; when the pressure cover rotates to the position where the upper clamping device and the lower clamping device are separated, the misoperation prevention trigger safety device presses the sealing ring, and the pressure cooker is in a pressure relief state.

[0005] When the upper clamping device and the lower clamping device are in the clamped position, the pressure cooker can be in a closed state; the lower clamping device presses or releases the sealing ring by triggering the misoperation prevention trigger safety device, thereby realizing the closed or pressure relief function of the pressure cover. When the cover is forcibly rotated open, the misoperation prevention trigger safety device can press the sealing ring to realize the function of rapid pressure relief, thereby improving the safety of the pressure cooker.

[0006] The lower buckling device comprises first convex positions and first concave positions, the first convex positions are formed by protruding outward along the pot edge of the pot body, and a plurality of first convex positions are arranged, and the first concave positions are formed between adjacent first convex positions; the upper buckling device comprises second convex positions and second concave positions, the outer periphery of the pressure cover is provided with a cover edge for buckling the pot body, the inner side of the cover edge is outwardly protruding and extended to form the second convex positions, a plurality of second convex positions are arranged, and the second concave positions are formed between adjacent second convex positions; the second convex positions are matched with the first concave positions in shape; when the pot body is covered on the pressure cover, the second convex positions are lowered to align with the first concave positions, the first convex positions are gradually placed out of position with the second convex positions by rotating the pressure cover until the first convex positions are located above the second convex positions, that is, the pressure cover is screwed with the pot body is completed, and the first concave positions are opposite to the second concave positions; when the pressure cover needs to be opened, the second convex positions are opposite to the first concave positions by rotating the pressure cover, so that the pressure cover can be opened. The buckling of the pressure cover and the pot body can be realized by overlapping the convex positions, and the buckling of the pressure cover and the pot body is more compact due to the increase of pressure during cooking.

[0007] The anti-misoperation trigger safety device comprises a box, a swing piece and a fixed shaft; the cover edge of the pressure cover is provided with an elongated hole, the swing piece is arranged on the fixed shaft, the fixed shaft is respectively installed on the upper and lower sides of the box, and the swing piece is located in the box; the swing piece is protruded to form a first cam and a second cam on the two sides thereof towards the center of the pressure cover, the first cam is located at the upper end of the swing piece, and the second cam is located at the lower end of the swing piece; the box is installed on the cover edge of the pressure cover around the elongated hole, and the first cam and the second cam are located in the elongated hole; after the pressure cover is closed, the pressure cover is rotated, the second cam moves along the pot edge to the first convex position, when the second cam moves to the first convex position, the swing piece rotates under the action of the fixed shaft, and the first cam extrudes the sealing ring to deform; when the pressure cover is completely buckled with the pot body, the second cam is located in the first concave position, and the first cam returns to a state of not contacting the sealing ring; when there is air pressure in the pot, the pressure cover is rotated hard, the first cam extrudes the sealing ring to deform to exhaust under the hard action of the second cam and the first convex position. The fixed shaft provides a rotating fulcrum for the swing piece, the vertical height of the first cam is higher than that of the second cam, the second cam is used for realizing contact with the first convex position, the second cam is forced to extrude the outer edge of the first convex position to move, the first cam is protruded inward to extrude the sealing ring, so that the sealing ring is deformed to realize the exhaust pressure relief function, and the phenomenon of cover explosion and flying cover is avoided. When the second cam slides to the first concave position, the second cam is separated from the first convex position, the first cam is reset, the sealing ring is not extruded, and the pressure cooker returns to the pressure maintaining state.

[0008] The box body has a containing cavity inside, and the swing piece is located in the containing cavity; a lower positioning hole is formed in the bottom of the box body, and an upper positioning hole is formed in the lower side of the box cover; the swing piece is put into the containing cavity of the box body from top to bottom, the lower end of the fixing shaft is inserted into the lower positioning hole, the box cover is placed and fixed on the upper side of the box body, the upper end of the fixing shaft is inserted into the upper positioning hole, and the box body is fixed on the cover along of the pressure cover through bolts. The upper positioning hole and the lower positioning hole are arranged to fix the fixing shaft, so that the swing piece has a rotating fulcrum.

[0009] An installation groove is formed in the top of the box body, the installation groove is communicated with the containing cavity, the box cover is embedded in the installation groove, the lower side of the box cover abuts against the inner wall of the installation groove, and the top of the box cover is flush with the top edge of the box body. The box cover is embedded in the installation groove, the top of the box cover is flush with the top of the box body, the external structure of the box is smooth, and the box has aesthetic feeling.

[0010] The first cam is a semicircle structure with a circular arc shape, and the protruding part of the semicircle structure faces the center of the pressure cover; the second cam is a semicircle structure with a circular arc shape, and the protruding part of the semicircle structure faces the center of the pressure cover. The first cam has a circular arc semicircle structure, so that the extrusion of the first cam and the sealing ring has smooth transition and does not wear the sealing ring. The second cam has a circular arc semicircle structure, so that the second cam and the first cam slide smoothly.

[0011] The first cam and the middle part of the swing piece have a first inclined surface inclined downward; the second cam and the middle part of the swing piece have a second inclined surface inclined upward.

[0012] The box is installed on the cover along of the pressure cover on the upper side of the second recess, and one end of the long hole is close to one side of the second protrusion. The position of the box and the long hole can help to know the position of the second recess through the box, facilitate the adjustment of the rotation of the pressure cooker, and facilitate the opening of the cover and the box cover.

[0013] Compared with the prior art, the device has the advantages that the sealing function of the pressure cooker or the exhaust and pressure relief function of the cooker can be realized through the screwing of the pressure cooker; when there is air pressure in the cooker, if the safety valve is forgotten to be opened to exhaust in advance and the pressure cover is rotated hard, the sealing ring is deformed and quickly exhausts under the hard action of the second cam and the first protrusion of the device, so that the cover flying accident is avoided, and the use risk is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view when the embodiment of the present application is installed in a pressure cooker.

[0015] Figure 2A top view of the pressure cooker when the embodiment of the present application is installed in the pressure cooker;

[0016] Figure 3 A top view of the pressure cooker when the embodiment of the present application is installed in the pressure cooker; Figure 2 A sectional view along A-A in the middle;

[0017] Figure 4 A sectional view along A-A in the middle; Figure 3 A local enlarged view at B;

[0018] Figure 5 A top view of the pressure cooker when the embodiment of the present application is installed in the pressure cooker;

[0019] Figure 6 A top view of the pressure cooker when the embodiment of the present application is installed in the pressure cooker; Figure 4 A sectional view along C-C in the middle;

[0020] Figure 7 A structural exploded view of the pressure cooker when the embodiment of the present application is installed in the pressure cover;

[0021] Figure 8 A structural exploded view of the pressure cooker when the embodiment of the present application is installed in the pressure cover;

[0022] Figure 9 A structural view of the pressure cover of the embodiment of the present application;

[0023] Figure 10 A structural view of the pressure cover of the embodiment of the present application after the sealing ring is removed;

[0024] Figure 11 A structural view of the pot body, the sealing ring and the rocking piece of the embodiment of the present application;

[0025] Figure 12 A structural view of the pot body and the rocking piece of the embodiment of the present application;

[0026] Figure 13 A bottom view of the pot body of the embodiment of the present application;

[0027] Figure 14 A structural view of the anti-misoperation triggering safety device of the embodiment of the present application;

[0028] Figure 15 A structural exploded view of the anti-misoperation triggering safety device of the embodiment of the present application;

[0029] Figure 16 A structural exploded view of the anti-misoperation triggering safety device of the embodiment of the present application in another direction.

[0030] Figure 1, the meaning of the reference: 1, the pot body; 11, the first convex position; 12, the first concave position; 2, the pressure cover; 21, the second convex position; 22, the second concave position; 23, the long hole; 31, the box; 311, the box body; 312, the box cover; 313, the containing cavity; 314, the lower positioning hole; 315, the upper positioning hole; 316, the installation slot; 32, the swing piece; 321, the first cam; 322, the second cam; 33, the fixed shaft; 4, the sealing ring. DETAILED DESCRIPTION

[0031] The content of the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0032] EMBODIMENT

[0033] REFERENCE Figures 1 to 16 The present application is a kind of anti-misoperation safety device for pressure cooker, which is installed on the pressure cooker, the pressure cooker includes the pot body 1 and the pressure cover 2, the pressure cover 2 is placed on the pot body 1, the anti-misoperation safety device includes the upper buckle device, the lower buckle device and the anti-misoperation trigger safety device, the upper buckle device and the anti-misoperation trigger safety device are arranged on the pressure cover 2, the lower buckle device is arranged on the pot body 1 along the pot edge; The sealing ring 4 is installed on the inner side of the pressure cover 2, when the pressure cover 2 rotates with the pot body 1, the lower buckle device triggers the anti-misoperation trigger safety device to extrude or loosen the sealing ring 4; When the pressure cover 2 rotates to the position that the upper buckle device and the lower buckle device are buckled, the anti-misoperation trigger safety device loosens the sealing ring 4, and the pressure cooker is in a closed state; When the pressure cover 2 rotates to the position that the upper buckle device and the lower buckle device are separated, the anti-misoperation trigger safety device extrudes the sealing ring 4, and the pressure cooker is in a state of exhaust and pressure relief.

[0034] When the upper buckle device and the lower buckle device are buckled, the pressure cooker can be in a closed state; The lower buckle device extrudes or loosens the sealing ring 4 by triggering the anti-misoperation trigger safety device, so as to realize the closed or exhaust and pressure relief function of the pressure cover 2, when forcibly rotating the cover, the anti-misoperation trigger safety device can extrude the sealing ring 4 to realize the function of rapid exhaust, thereby improving the safety of the pressure cooker.

[0035] The upper buckling device comprises first convex positions 11 and first concave positions 12, the first convex positions 11 are formed by the outward protrusions along the pot edge of the pot body 1, the first convex positions 11 are provided with a plurality of first convex positions 11, and the first concave positions 12 are formed between adjacent first convex positions 11; the upper buckling device comprises second convex positions 21 and second concave positions 22, the pressure cover 2 is provided with a cover edge for buckling the pot body 1, the inner side of the cover edge is outwardly protruded and extended to form the second convex positions 21, the second convex positions 21 are provided with a plurality of second convex positions 21, and the second concave positions 22 are formed between adjacent second convex positions 21; the second convex positions 21 are matched with the first concave positions 12 in shape; when the pressure cover 2 is placed on the pot body 1, the second convex positions 21 are aligned with the first concave positions 12 and are placed down, the pressure cover 2 is rotated, the first convex positions 11 and the second convex positions 21 are gradually placed out of position until the first convex positions 11 are located above the second convex positions 21, that is, the rotation of the pressure cover 2 and the pot body 1 is completed, and the first concave positions 12 and the second concave positions 22 are located opposite to each other; when the pressure cover 2 needs to be opened, the pressure cover 2 is rotated, so that the second convex positions 21 are located opposite to the first concave positions 12, and the pressure cover 2 can be opened. The buckling of the pressure cover 2 and the pot body 1 can be realized through the overlapping between the convex positions of the pressure cover 2 and the pot body 1, and the buckling of the pressure cover 2 and the pot body 1 is more compact due to the increase of pressure during cooking. In the embodiment, the cover edge of the pressure cover 2 is provided with a circular ring and a plurality of clamping pieces for clamping the circular ring, the circular ring is located below the sealing ring 4 and presses against the sealing ring 4, so as to avoid the sliding of the sealing ring 4.

[0036] The anti-misoperation trigger safety device comprises a box 31, a swing piece 32 and a fixed shaft 33; the cover of the pressure cover 2 is provided with an elongated hole 23, the swing piece 32 is arranged on the fixed shaft 33, the fixed shaft 33 is respectively arranged on the upper and lower sides of the box 31, and the swing piece 32 is arranged in the box 31; the swing piece 32 is provided with a first cam 321 and a second cam 322 which protrude towards the center of the pressure cover 2; the box 31 is arranged on the cover of the pressure cover 2, and the first cam 321 and the second cam 322 are arranged in the elongated hole 23; after the pressure cover 2 is closed, the pressure cover 2 is rotated, the second cam 322 is moved from the first recess 12 to the first protrusion 11 along the edge of the pot, when the second cam 322 is moved to the first protrusion 11, the swing piece 32 is rotated under the action of the fixed shaft 33, and the first cam 321 extrudes the sealing ring 4 to deform; when the pressure cover 2 is completely buckled with the pot body 1, the second cam 322 is arranged in the first recess 12, and the first cam 321 returns to a state of not contacting the sealing ring 4; when there is air pressure in the pot, the pressure cover 2 is rotated hard, the first cam 321 extrudes the sealing ring 4 to deform to exhaust under the action of the second cam 322 and the first protrusion 11; the fixed shaft 33 provides a rotating fulcrum for the swing piece 32, the vertical height of the first cam 321 is higher than that of the second cam 322, the second cam 322 is used for colliding with the first protrusion 11, the second cam 322 is forced to extrude the outer edge of the first protrusion 11 to move, the first cam 321 is extended inward to extrude the sealing ring 4, so that the sealing ring 4 is deformed to realize the exhaust pressure relief function, and the phenomenon of cover explosion and cover flying is avoided; when the second cam 322 slides to the first recess 12, the second cam 322 is separated from the first protrusion 11, the first cam 321 is reset, the sealing ring 4 is not extruded, and the pressure cooker returns to the pressure maintaining state.

[0037] The box 31 comprises a box body 311 and a box cover 312, the box body 311 is internally provided with a containing cavity 313, and the swing piece 32 is arranged in the containing cavity 313; the bottom of the box body 311 is provided with a lower positioning hole 314, and the lower side of the box cover 312 is provided with an upper positioning hole 315; the swing piece 32 is arranged in the containing cavity 313 of the box body 311 from top to bottom, the lower end of the fixed shaft 33 is inserted into the lower positioning hole 314, the box cover 312 is arranged on the upper side of the box body 311 and is fixed, the upper end of the fixed shaft 33 is inserted into the upper positioning hole 315, and the box body 311 is fixed on the cover of the pressure cover 2 by bolts. The upper positioning hole 315 and the lower positioning hole 314 are arranged to fix the fixed shaft 33, so that the swing piece 32 has a rotating fulcrum.

[0038] The box body 311 is provided with a mounting groove 316 at the top, and the mounting groove 316 is communicated with the accommodating cavity 313; the box cover 312 is embedded in the mounting groove 316, the lower side of the box cover 312 abuts against the inner wall of the mounting groove 316, and the top of the box cover 312 is flush with the top edge of the box body 311. The box cover 312 is embedded in the mounting groove 316, and the top of the box cover 312 is flush with the top of the box body 311, so that the external structure of the box 31 is smooth and has aesthetic sense.

[0039] The first cam 321 is a semicircle structure with a circular arc, and the protruding part of the semicircle structure faces the center of the pressure cover 2; the second cam 322 is a semicircle structure with a circular arc, and the protruding part of the semicircle structure faces the center of the pressure cover 2. The first cam 321 has a circular arc semicircle structure, so that the extrusion of the first cam 321 and the sealing ring 4 has a smooth transition and does not wear the sealing ring 4. The second cam 322 has a circular arc semicircle structure, so that the second cam 322 and the first convex position 11 slide smoothly.

[0040] The first cam 321 and the middle part of the swing piece 32 have a first inclined surface inclined downward; the second cam 322 and the middle part of the swing piece 32 have a second inclined surface inclined upward.

[0041] The box 31 is installed on the cover side of the pressure cover 2 on the upper side of the second recessed position 22, and one end of the elongated hole 23 is close to one side of the second convex position 21. The position of the box 31 and the elongated hole 23 can know the position of the second recessed position 22 through the box 31, which is convenient for adjusting the rotation of the pressure cooker and opening the cover and the box cover 312.

[0042] The installation of the embodiment: fix the swing piece 32 in a box 31, fix the installed anti-misoperation safety device on the side of the pressure cover 2, and make the swing piece 32 in the elongated hole 23.

[0043] The working principle of the embodiment:

[0044] (1) Rotate the pressure cover 2, and the second cam 322 of the swing piece 32 moves along the first convex position 11 from the first recessed position along the pot edge of the pot body 1. When the first cam 321 of the swing piece 32 moves to the first convex position 11, the swing piece 32 rotates counterclockwise under the action of the fixed shaft 33. At this time, the first cam 321 of the swing piece 32 extrudes the sealing ring 4 to deform, and cannot play a sealing role. The first cam 321 extrudes the sealing ring 4 to deform, which can extrude the sealing ring 4 when misoperation occurs, so as to realize exhaust and pressure relief, and avoid the situation that the pot cover flies.

[0045] (2) When the pressure cover 2 and the pot body 1 are completely closed, the second cam 322 of the swing piece 32 just moves to the first recessed position of the pot body 1. At this time, under the elastic force of the sealing ring 4, the first cam 321 of the swing piece 32 returns to the state of not touching the sealing ring 4, and the sealing ring 4 can play a normal sealing role.

[0046] When the pressure cover 2 is not completely closed with the pot body 1, the second cam 322 of the swing piece 32 is also placed on the first convex position 11 of the pot body 1, so that the sealing ring 4 cannot be completely sealed and cannot be pressurized.

[0047] When there is air pressure in the pot, if the pressure cover 2 is forcibly rotated to be opened, the second cam 322 of the swing piece 32 is hard-pressed against the first convex position 11 of the pot body 1, so that the sealing ring 4 is rapidly deformed to exhaust air, and the accident of cover explosion and flying cover is prevented.

[0048] The above detailed description is for the specific description of the feasible embodiments of the present application, and the embodiments are not used to limit the patent scope of the present application. Any equivalent implementation or change without departing from the present application shall be included in the patent scope of the present application.

Claims

1. A safety device to prevent misoperation in a pressure cooker, installed on the pressure cooker, the pressure cooker including a pot body and a pressure lid, the pressure lid being placed above the pot body, characterized in that: The anti-misoperation safety device includes an upper locking device, a lower locking device, and an anti-misoperation triggering safety device. The upper locking device and the anti-misoperation triggering safety device are mounted on the pressure cover, and the lower locking device is mounted on the pot body along the edge of the pot. A sealing ring is installed inside the pressure cover. When the pressure cover and the pot body rotate, the lower locking device triggers the anti-misoperation triggering safety device to squeeze or release the sealing ring. When the pressure cover rotates to the position where the upper locking device and the lower locking device are locked together, the anti-misoperation triggering safety device releases the sealing ring, and the pressure pot is in a sealed state. When the pressure cover rotates to the position where the upper locking device and the lower locking device are separated, the anti-misoperation triggering safety device releases the sealing ring. The entire device compresses the sealing ring, putting the pressure cooker in a depressurized state. The lower fastening device includes a first protrusion and a first recess. The first protrusion is formed by the body of the pot protruding outward along the edge of the pot. Several first protrusions are provided, and a first recess is formed between adjacent first protrusions. The upper fastening device includes a second protrusion and a second recess. The outer periphery of the pressure cap has a cap edge for fastening the pot body. The lower inner part of the cap edge protrudes inward to form the second protrusion. Several second protrusions are provided, and a second recess is formed between adjacent second protrusions. The shape of the second protrusion matches the shape of the first recess. When the pressure cap is placed on the pot body, the second protrusion is aligned with the first recess and lowered. Rotating the pressure cap gradually shifts the first and second protrusions until the first protrusion is above the second protrusion, thus tightening the pressure cap to the pot body. The first and second recesses are then aligned. To open the pressure cap, rotate it so that the second protrusion aligns with the first recess, allowing the pressure cap to open. The safety device to prevent accidental operation includes a U-shaped box, a rocker arm, and a fixed shaft. The pressure cap has an elongated hole along its edge. The rocker arm passes through the fixed shaft, with its two ends mounted on the upper and lower sides of the U-shaped box. The rocker arm is located inside the U-shaped box. Both sides of the rocker arm face the pressure cap. A first cam and a second cam protrude from the center, with the first cam located at the upper end of the rocker and the second cam at the lower end of the rocker. The i-shaped box is mounted on the pressure cap edge around the elongated hole, with the first and second cams located within the elongated hole. After the pressure cap is closed, rotating the pressure cap causes the second cam to move from the first concave position along the edge of the pot towards the first convex position. When the second cam reaches the first convex position, the rocker rotates under the action of the fixed shaft, and the first cam compresses the sealing ring, deforming it. When the pressure cap is fully engaged with the pot body, the second cam is located within the first concave position, and the first cam returns to a state where it does not touch the sealing ring.When there is pressure inside the pot, forcefully rotating the pressure cap causes the first cam to compress the sealing ring and deform it, releasing the gas due to the hard action of the second cam and the first protrusion.

2. The anti-misoperation safety device for a pressure cooker according to claim 1, characterized in that: The shaped box includes a box body and a box lid. The box body has an internal cavity, and the rocking component is located inside the cavity. A lower positioning hole is provided at the bottom of the box body, and an upper positioning hole is provided on the lower side of the box lid. The rocking component is placed into the cavity of the box body from top to bottom. The lower end of the fixing shaft is inserted into the lower positioning hole. The box lid is placed on and fixed to the upper side of the box body. The upper end of the fixing shaft is inserted into the upper positioning hole. The box body is fixed to the edge of the pressure cover by bolts.

3. The anti-misoperation safety device for a pressure cooker according to claim 2, characterized in that: The top of the box body has an installation groove that communicates with the receiving cavity; the box cover is embedded in the installation groove, the lower side of the box cover abuts against the inner wall of the installation groove, and the top of the box cover is flush with the top edge of the box body.

4. The anti-misoperation safety device for a pressure cooker according to claim 1, characterized in that: The first cam has a semi-circular structure with an arc shape, and the protrusion of the semi-circular structure faces the center of the pressure cover; the second cam has a semi-circular structure with an arc shape, and the protrusion of the semi-circular structure faces the center of the pressure cover.

5. The anti-misoperation safety device for a pressure cooker according to claim 1, characterized in that: The first cam and the middle of the rocker member have a first inclined surface that slopes downwards; the second cam and the middle of the rocker member have a second inclined surface that slopes upwards.

6. The anti-misoperation safety device for a pressure cooker according to claim 1, characterized in that: The shaped box is installed on the pressure cover edge on the upper side of the second recess, and one end of the elongated hole is close to the side of the second protrusion.

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