Electric rice cooker cover and electric rice cooker

Abstract

The present application relates to a kind of electric rice cooker cover and electric rice cooker, electric rice cooker cover includes cover body and installs the anti-uncovering device on cover body, cover body is provided with touch switch and is rotatably installed with locking assembly, when locking assembly is in the first rotating position, cover body is locked;When locking assembly is in the second rotating position, cover body is unlocked;Touch switch is triggered by locking assembly, to correspondingly send the signal of locking cover body and / or the signal of unlocking cover body, anti-uncovering device includes jacking assembly driven by the pressure in electric rice cooker and up and down movement and stop component driven by jacking assembly and up and down movement, stop component up and down movement to prevent locking assembly from rotating when entering the rotating path of locking assembly, after leaving the rotating path of locking assembly, ensure that electric rice cooker can be normally opened, the present application can avoid electric rice cooker cover accidental opening while improving the opening and closing convenience of electric rice cooker cover, improve the use safety of electric rice cooker.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, specifically to a rice cooker lid and a rice cooker. Background Technology

[0002] An electric rice cooker is a cooking appliance that converts electrical energy into heat energy. It has multiple functions such as steaming, boiling, stewing, simmering, and braising, and is convenient, safe, and reliable to use. It not only cooks food but also keeps it warm. It is clean and hygienic to use, produces no pollution, and saves time and effort, making it an indispensable tool for modern household chores. However, if an electric rice cooker accidentally opens, it can pose a safety hazard. Summary of the Invention

[0003] To address the problems existing in the prior art, this application discloses a rice cooker lid and a rice cooker.

[0004] According to one aspect of this application, a rice cooker lid is disclosed, comprising:

[0005] The cover body has a locking component rotatably mounted on it. When the locking component is in a first rotational position, the cover body is locked; when the locking component is in a second rotational position, the cover body is unlocked. The cover body includes an upper cover and an inner cover mounted on the upper cover. The inner cover has a mounting hole.

[0006] An anti-opening device installed on the lid body includes a lifting component that moves up and down driven by the pressure inside the rice cooker and a stop component that moves up and down driven by the lifting component. The stop component moves up and down to enter or leave the rotation path of the locking component.

[0007] The lifting assembly is configured such that when the pressure inside the rice cooker is greater than a preset pressure threshold, the lifting assembly moves upward and drives the stop assembly to move upward to enter the rotation path of the locking assembly, thereby preventing the locking assembly from rotating from the first rotation position to the second rotation position; when the pressure inside the rice cooker is less than or equal to the preset pressure threshold, the lifting assembly moves downward and the stop assembly moves downward away from the rotation path of the locking assembly, so that the locking assembly can rotate from the first rotation position to the second rotation position.

[0008] A touch switch is also provided on the cover body. At the first rotational position and / or the second rotational position, the touch switch is triggered by the locking component to correspondingly issue a signal to lock the cover body and / or a signal to unlock the cover body. Further, the cover body includes an upper cover bracket and an inner cover detachably mounted on the upper cover bracket. The stop component is mounted on the upper cover bracket, and the lifting component is mounted on the inner cover.

[0009] Furthermore, the lifting assembly includes a top rod, a pressure-bearing seat with a floating hole at the top, and an elastic membrane disposed at the lower end of the top rod. The top rod reciprocates through the floating hole, and the elastic membrane is connected to the pressure-bearing seat to bear the pressure inside the rice cooker.

[0010] When the pressure inside the rice cooker is greater than the preset pressure threshold, the elastic membrane is squeezed upward to drive the push rod to move upward. When the pressure inside the rice cooker is less than or equal to the preset pressure threshold, the elastic membrane recovers its deformation to allow the push rod to move downward.

[0011] Furthermore, the elastic membrane includes a plurality of alternating protrusions and recesses, and the push rod includes a support leg inserted into the recess.

[0012] Furthermore, the lifting assembly also includes a protective perforated plate, which is disposed at the lower end of the pressure bearing seat and outside the elastic membrane. The protective perforated plate is provided with protective holes, and the elastic membrane bears the pressure inside the rice cooker through the protective holes.

[0013] Furthermore, the lifting assembly also includes a first return spring, which is sleeved on the lifting rod to drive the lifting rod to move. When the pressure in the rice cooker is greater than the preset pressure threshold, the lifting rod moves upward and squeezes the first return spring. When the pressure in the rice cooker is less than or equal to the preset pressure threshold, the first return spring drives the lifting rod to move downward.

[0014] Furthermore, the stop assembly also includes a stop rod and a second return spring. The second return spring is sleeved on the stop rod to drive the stop rod to move. During the upward movement of the push rod and the compression of the first return spring, the stop rod is pushed by the push rod and compresses the second return spring. During the downward movement of the push rod driven by the first return spring, the second return spring drives the stop rod to move downward.

[0015] Furthermore, the stop assembly also includes a limiting device installed on the upper cover, the limiting device having a through hole extending from top to bottom, through which the stop rod reciprocates.

[0016] Furthermore, the locking assembly includes a rotating frame and a locking ring for locking the lid body, with a column extending upward along the axial direction of the locking ring.

[0017] The rotating frame includes a rotating shaft and a first rotating arm extending radially outward from the side wall of the rotating shaft. The rotating shaft is rotatably mounted on the lid body. The first rotating arm cooperates with the column so that when the rotating shaft is rotated, the first rotating arm drives the pot locking ring to rotate between the first rotation position and the second rotation position.

[0018] Preferably, the rotating frame further includes a second rotating arm extending radially outward from the rotating shaft and offset from the first rotating arm, wherein the stop rod moves upward to enter the rotation path of the second rotating arm to prevent the locking assembly from rotating, and the stop rod moves downward to leave the rotation path of the second rotating arm to allow the locking assembly to rotate.

[0019] According to another aspect of this application, a rice cooker is also disclosed, the rice cooker including the rice cooker lid described above.

[0020] The rice cooker lid of this invention includes a lid body and an anti-opening device mounted on the lid body. A locking component is rotatably mounted on the lid body. When the locking component is in a first rotational position, the lid body is locked; when the locking component is in a second rotational position, the lid body is unlocked. The anti-opening device includes a lifting component that moves up and down driven by the pressure inside the rice cooker and a stop component that moves up and down driven by the lifting component. The stop component moves up and down to enter or leave the rotational path of the locking component. Specifically, when the pressure inside the rice cooker is greater than a preset pressure threshold, the lifting component moves upward and drives the stop component to move upward to enter the rotational path of the locking component, thus preventing the locking component from rotating from the first rotational position to the second rotational position. When the pressure inside the rice cooker is less than or equal to the preset pressure threshold, the lifting component moves downward, and the stop component moves downward to leave the rotational path of the locking component, allowing the locking component to rotate from the first rotational position to the second rotational position. Thus, this invention can prevent the locking component from rotating by entering the rotation path of the locking component through the stop component, thereby preventing the rice cooker lid from opening, and ensure that the rice cooker can be opened normally after leaving the rotation path of the locking component. This improves the convenience of opening and closing the rice cooker lid, while also preventing the rice cooker lid from opening accidentally, thus improving the safety of using the rice cooker. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the rice cooker lid provided in an embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of the anti-opening device provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the pot-locking ring provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the rotating frame provided in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the upper cover bracket provided in an embodiment of the present invention;

[0027] Figure 6 This is a cross-sectional view of the rice cooker provided in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the position of the rotating frame when the cover body is not locked, according to an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the position of the rotating frame when the cover body is locked, according to an embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the structure when the push rod moves upward to a certain position according to an embodiment of the present invention;

[0031] Figure 10 This is a cross-sectional view of the rice cooker lid provided in an embodiment of the present invention;

[0032] Figure 11 yes Figure 10 A magnified view of a portion of point I;

[0033] Figure 12 This is a schematic diagram of the inner cover bracket provided in an embodiment of the present invention;

[0034] Figure 13 This is a structural schematic diagram of the internal locking member provided in an embodiment of the present invention at one angle;

[0035] Figure 14 This is a structural schematic diagram of the internal locking member provided in an embodiment of the present invention from another angle;

[0036] Figure 15 This is a structural schematic diagram of the external locking member provided in an embodiment of the present invention at one angle;

[0037] Figure 16 This is a structural schematic diagram of the external locking member provided in an embodiment of the present invention from another angle;

[0038] Figure 17 This is a schematic diagram of the structure of the inner cover lower seal provided in an embodiment of the present invention;

[0039] Figure 18 This is a schematic diagram of the inner cover provided in an embodiment of the present invention;

[0040] Figure 19 This is a cross-sectional view of the rice cooker provided in an embodiment of the present invention from one angle;

[0041] In the diagram, 1-inner cover bracket, 11-auxiliary locking part, 12-notch, 13-slide groove sidewall, 131-stop protrusion, 14-fixing part, 15-connecting part, 2-locking assembly, 21-inner locking element, 211-engaging protrusion, 212-first edge, 213-main locking part, 214-positioning groove, 2141-through hole, 22-outer locking element, 221-engaging groove, 222-second edge, 223-sealing ring groove, 224-positioning hole post, 225-support rib, 3-lower inner cover seal, 31-sealing lip, 32-base, 4-upper inner cover seal, 41-mounting part, 42-sealing part, 5-fixing element, 6-inner cover, 61-mounting hole, 611-rotation limiting area, 7-upper cover.

[0042] 101-Pressure chamber, 102-Pressure seat, 103-Protective perforation plate, 1031-Protective hole, 104-Elastic membrane, 1041-Protrusion, 1042-Recess, 105-Floating hole, 106-Inner cavity, 107-Sealing gasket, 20-Top rod, 201-Support leg, 202-Extension part, 203-Limiting part, 30-Stop rod, 301-Stop step, 40-Limiting device, 50-Through hole, 60-Locking assembly, 601-Pot locking ring, 602-Column, 603-Pot lid serration, 604-Rotating frame, 6041-First rotating arm, 6042-Second rotating arm, 6043-Rotating shaft, 6044-Insertion hole, 605-Handle, 70-First return spring, 80-Second return spring

[0043] 100-Connecting device, 200-Anti-opening device, 300-Upper cover support, 400-Pot body. Detailed Implementation

[0044] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0045] This invention discloses a rice cooker lid. For example... Figures 1 to 9 As shown, the rice cooker lid includes: a lid body, a locking assembly 60 rotatably mounted on the lid body, and an anti-opening device 200 mounted on the lid body.

[0046] When the locking component 60 is in the first rotational position, the cover body is locked; when the locking component 60 is in the second rotational position, the cover body is unlocked.

[0047] Continue reading Figure 2 As shown, the anti-opening device 200 includes a lifting component that moves up and down driven by the pressure inside the rice cooker and a stop component that moves up and down driven by the lifting component. The stop component moves up and down to enter or leave the rotation path of the locking component 60.

[0048] The lifting component is configured such that when the pressure inside the rice cooker is greater than a preset pressure threshold, the lifting component moves upward and drives the stop component to move upward to enter the rotation path of the locking component 60, thereby preventing the locking component 60 from rotating from the first rotation position to the second rotation position; when the pressure inside the rice cooker is less than or equal to the preset pressure threshold, the lifting component moves downward and the stop component moves downward away from the rotation path of the locking component 60, so that the locking component 60 can rotate from the first rotation position to the second rotation position.

[0049] A touch switch is also provided on the cover body. At the first rotation position and / or the second rotation position, the touch switch is triggered by the locking component 60 to correspondingly issue a signal to lock the cover body and / or a signal to unlock the cover body.

[0050] The first rotational position mentioned above can refer to the position where the lid body can be locked. In this first rotational position, if the pressure inside the rice cooker exceeds a preset pressure threshold, the pressure inside the rice cooker will lift the lifting component, which in turn will lift the stop component to prevent the locking component 60 from rotating. The second rotational position can refer to the position where the lid body can be unlocked. At this time, the pressure inside the rice cooker is less than or equal to the preset pressure threshold, and the lifting component and the stop component retract, allowing the locking component 60 to rotate. Specifically, when using the rice cooker to cook rice, after the pressure inside the rice cooker reaches the preset pressure threshold, the lifting component lifts the stop component to prevent the locking component 60 from rotating, thus locking the lid body and preventing it from being opened. This prevents the rice cooker from being opened when the internal pressure exceeds the preset pressure threshold, improving the safety of the rice cooker. After depressurization, if the pressure inside the rice cooker is equal to the pressure threshold or less than the pressure threshold after depressurization, the lifting component moves downward, causing the stop component to move downward, losing its blocking effect on the locking component 60, and the rice cooker can be opened. It is understandable that the rice cooker can be prevented from accidentally opening by the lifting and stopping components moving up and down with the pressure changes inside the rice cooker. The structure is simple and compact.

[0051] Furthermore, the rotation path can refer to the path formed by the locking component 60 between the first rotation position and the second rotation position, within which the locking component 60 can rotate counterclockwise or clockwise.

[0052] Furthermore, the aforementioned preset pressure threshold can be pre-set, for example, to 3 kPa, 4 kPa, etc., depending on the specific requirements. It should be understood that the preset pressure threshold should be as small as possible so that when using the rice cooker, after a very short heating time (i.e., only a small pressure rise inside the rice cooker), the lifting component and the stop component will rise to prevent the rice cooker from being accidentally opened.

[0053] Furthermore, the aforementioned touch switch can be triggered by the locking assembly 60 by the first rotating arm 6041 on the rotating frame 604 contacting the touch switch. The first rotating arm 6041 can be configured to have a bend, and there can be two touch switches 8, arranged corresponding to the bend of the first rotating arm 6041. Both touch switches can be simultaneously contacted by the first rotating arm 6041. By setting two touch switches, it is possible to prevent the other touch switch from normally sending a signal to lock or unlock the cover body when one touch switch malfunctions, thus ensuring that the touch switch can be triggered normally. It is understood that the number of touch switches can also be 3, 4, or other numbers, which can be set according to the actual situation and is not limited here.

[0054] Furthermore, such as Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the locking assembly 60 includes a rotating frame 604 and a locking ring 601 for locking the lid body. A column 602 extends axially upwards from the locking ring 601, and lid serrations 603 extend radially inwards from the locking ring 601. The rotating frame 604 includes a rotating shaft 6043, a first rotating arm 6041 extending radially outwards from the rotating shaft 6043, and a second rotating arm 6042 extending radially outwards from the rotating shaft 6043 and offset from the first rotating arm 6041. The rotating shaft 6043 is rotatably mounted on the lid body. The first rotating arm 6041 (or the rotating frame 604) cooperates with the column 602 and can drive the locking ring 601 to rotate, causing the lid serrations 603 to engage or disengage with the pot body serrations 4001 on the pot body 400, thereby closing or opening the rice cooker lid.

[0055] When cooking rice, if the pressure inside the rice cooker exceeds the preset pressure threshold, the stop component rises to prevent the second rotating arm 6042 from rotating. Consequently, the rotating bracket 604 and the pot-locking ring 601 also cannot rotate, thus preventing the rice cooker from opening. When the pressure inside the rice cooker is less than or equal to the preset pressure threshold, the stop component descends and no longer prevents the second rotating arm 6042 from rotating. This allows the rotating bracket 604 and the pot-locking ring 601 to rotate, opening the rice cooker lid.

[0056] In one specific embodiment, for example, a socket 6044 is provided at the end of the first rotating arm 6041. During assembly, the column 602 is inserted into the socket 6044 to achieve the engagement of the rotating frame 604 and the locking ring 601. In another embodiment, such as... Figure 4 As shown, the rotating frame 604 is also provided with a handle 605. Specifically, the handle 605 extends rotatably from the outside to the inside of the rice cooker lid and is connected to the rotating shaft 6043 of the rotating frame 604. Thus, the rotating frame 604 can be operated to rotate by rotating the handle 605 from the outside of the rice cooker lid, thereby driving the locking ring 601 to rotate and realize the closing and opening of the rice cooker lid, which facilitates the operation of the user.

[0057] For example, the locking ring 601 can be set to rotate clockwise for forward rotation, thereby locking the lid serrations 603 with the pot body serrations; and set to rotate counterclockwise for reverse rotation, thereby disengaging the lid serrations 603 from the pot body serrations. In one possible implementation, there can be four lid serrations 603, spaced 90° apart circumferentially along the locking ring 601. In this case, the number of pot body serrations is the same as the number of lid serrations 603, achieving matching with the lid serrations 603, thus locking the lid serrations with the pot body serrations, and allowing the rice cooker lid to close.

[0058] In one possible implementation, the rotating shaft 6043, the first rotating arm 6041, and the second rotating arm 6042 are integrally formed. It is understood that integral forming of the rotating shaft 6043, the first rotating arm 6041, and the second rotating arm 6042 is only a preferred embodiment. In other feasible embodiments, the rotating shaft 6043, the first rotating arm 6041, and the second rotating arm 6042 can be processed separately and then assembled together to form the rotating frame 604.

[0059] In one specific embodiment, see further. Figure 1 and Figure 5 As shown, the lid body includes an upper lid support 300 and an inner lid 6. The inner lid 6 is detachably mounted on the upper lid support 300 via a connecting device 100 for easy cleaning and maintenance. A lifting assembly is located on the inner lid 6, while a stopping assembly is located on the upper lid support 300. Thus, the lifting assembly and the stopping assembly are separate structures. After the rice is cooked, both the inner lid 6 and the lifting assembly may be contaminated with food. By making the lifting assembly and the stopping assembly separate structures, the lifting assembly can be easily cleaned simultaneously when the inner lid 6 is removed for cleaning, greatly simplifying the user's operation. Furthermore, the lifting assembly does not affect the removal and installation of the inner lid 6. In another possible implementation, the lifting assembly and the stopping assembly can be integrated into a single unit to simplify the overall structure of the anti-opening lid device 200.

[0060] For further information, please refer to [link / reference]. Figure 2 The lifting assembly includes a pressure seat 102 with a floating hole 105 at the top, a push rod 20, and an elastic membrane 104 disposed at the lower end of the push rod 20. The push rod 20 reciprocates through the floating hole 105. The elastic membrane 104 is connected to the pressure seat 102 and can seal the entire lower end of the pressure seat 102, supporting the bottom of the pressure seat 102 to withstand the pressure inside the rice cooker. Specifically, both the floating hole 105 and the elastic membrane 104 are connected to the inner cavity 106 of the pressure seat 102. The push rod 20 is located inside the inner cavity 106. When the rice cooker is working normally, when the pressure inside the rice cooker is greater than a preset pressure threshold, the elastic membrane 104 is squeezed upward to deform, thereby driving the push rod 20 to move upward. When the pressure inside the rice cooker is less than or equal to the preset pressure threshold, the elastic membrane 104 recovers its deformation, causing the push rod to move downward. It can be understood that in this embodiment, the lower end is the end facing the pot body 400, and the upper end is the end opposite to the lower end.

[0061] For details, please refer to [link / reference]. Figure 9The elastic membrane 104 includes a plurality of alternately connected protrusions 1041 and recesses 1042, and the push rod 20 includes a support leg 201 inserted into the recess 1042. The elastic membrane 104 can support the push rod 20. In addition, the recess 1042 can accommodate the support leg 201 and limit the push rod 20 to ensure the stability of the push rod 20 in the vertical direction (i.e., the up-and-down movement direction of the push rod 20).

[0062] Furthermore, the lifting assembly also includes a first return spring 70, which is sleeved on the lifting rod 20 to drive the lifting rod 20 to move. The lifting rod 20 also includes a lifting extension 202 and a limiting part 203 extending radially outward from the lifting extension 202. The lifting extension 202 is connected to the support leg 201 and is in a straight line. The lifting extension 202 passes through a floating hole 105 on the pressure bearing seat 102. The first return spring 70 is specifically sleeved on the lifting extension 202, with its two ends abutting against the limiting part 203 and the pressure bearing seat 102, respectively. Thus, when the pressure inside the rice cooker is greater than a preset pressure threshold, the elastic membrane 104 is squeezed and deformed by the lifting rod 20 to drive the lifting rod 20 to move upward, and the first return spring 70 is compressed; when the pressure inside the rice cooker is less than or equal to the preset pressure threshold, the first return spring 70 extends and drives the lifting rod 20 to move downward.

[0063] Furthermore, the lifting assembly also includes a protective perforated plate 103. The protective perforation 103 is located at the lower end of the pressure-bearing seat 102 and outside the elastic mold 104. The protective perforated plate 103 has a protective hole 1031, and the elastic mold 104 receives the pressure inside the rice cooker through the protective perforation 103. Specifically, a pressure-bearing cavity 101 communicating with the inside of the rice cooker is formed between the elastic mold 104 and the protective perforated plate 103. When the pressure in the pressure-bearing cavity 101 (i.e., the rice cooker) is greater than a preset pressure threshold, the elastic mold 104 deforms upward, driving the push rod 20 to move upward; when the pressure in the pressure-bearing cavity 101 (i.e., the rice cooker) is less than or equal to the preset pressure threshold, the shape of the elastic mold 104 returns to its original shape, and the push rod 20 moves downward.

[0064] In one possible implementation, the diameter of the protective hole 1031 is 1.8mm to 2.2mm. For example, in this embodiment, the diameter of the protective hole 1031 can be 2mm. It is understood that the inventors have found that when cooking rice, a protective hole 1031 of this size can reduce the probability of rice water overflowing into the pressure chamber 101, thereby reducing the probability of the elastic membrane 104 being contaminated and improving the cleanliness of the rice cooker. Furthermore, the stop assembly also includes a stop rod 30 and a second return spring 80. The second return spring 80 is sleeved on the stop rod 30 to drive the stop rod 30 to move. During the upward movement of the top rod 30 and the compression of the first return spring 70, the stop rod 30 is pushed by the top rod 20 and compresses the second return spring 80. During the downward movement of the top rod 20 driven by the first return spring 70, the second return spring 80 drives the stop rod 30 to move downward.

[0065] Furthermore, the stop assembly also includes a limiting device 40 mounted on the upper cover bracket 300. The limiting device 40 has a through hole 50 extending from top to bottom, and the stop rod 30 extends through the through hole 50 and can reciprocate along the axial direction of the through hole 50. The limiting device 40 limits and holds the stop rod 30, keeping the stop rod 30 stable in the vertical direction (i.e., its direction of movement), preventing it from being knocked over by the second rotating arm 6042, thereby ensuring that the stop rod 30 can prevent the rice cooker from being opened by pressure.

[0066] In one possible implementation, the stop rod 30 has a radially outwardly extending stop step 301. After the second return spring 80 is sleeved on the stop rod 30, its two ends abut against the stop step 301 and the limiting device 40, respectively. Specifically, the second return spring 80 is a spring with a gradually decreasing helix diameter, wherein the end with the larger helix diameter rests on the stop step 301, and the end with the smaller helix diameter connects to or abuts against the inner wall of the limiting device 40.

[0067] Furthermore, the present invention discloses a rice cooker, which includes a pot body 400 and the aforementioned rice cooker lid.

[0068] Specifically, such as Figures 10 to 19As shown, the rice cooker lid also includes an upper cover bracket 300 and a connecting device 100. The inner cover 6 is detachably mounted to the upper cover bracket 300 via the connecting device 100. The inner cover 6 has a mounting hole 61. The connecting device 100 includes an inner cover bracket 1 and a locking assembly 2. The inner cover bracket 1 is mounted on the upper cover bracket 300, and an auxiliary locking part 11 is provided on the side wall of the inner cover bracket 1. The locking assembly 2 is rotatably mounted in the mounting hole 61. The locking assembly 2 includes an inner locking member 21 and an outer locking member 22. The inner locking member 21 has a radially outward... The outer locking member 22 has a radially outwardly extending second edge 222; the inner locking member 21 is located inside the outer locking member 22 and the first edge 212 and the second edge 222 overlap each other, and a portion of the inner cover 6 is clamped between the first edge 212 and the second edge 222; a main locking part 213 adapted to the auxiliary locking part 11 is provided on the side wall of the inner locking member 21, and the main locking part 213 is configured to be able to lock with the auxiliary locking part 11 after rotation or disengage from each other after rotation when the locking assembly 2 rotates.

[0069] The locking assembly 2 of the present invention can clamp the inner cover 6 and rotate relative to the inner cover 6. Therefore, when rotating the locking assembly 2 to install the inner cover 6 onto the upper cover bracket 300, based on the rotatable feature of the locking assembly 2 relative to the inner cover 6, the inner locking member 21 on the locking assembly 2 locks with the inner cover bracket 1 simultaneously without changing the relative position of the inner cover 6 and the upper cover bracket 300 during assembly. This avoids misalignment between other structures on the inner cover 6 and the matching structures on the upper cover bracket 300, improving the installation accuracy of the inner cover 6. Furthermore, when rotating the locking assembly 2 to remove the inner cover 6, based on the clamping feature of the locking assembly 2, the inner locking member 21 of the locking assembly 2 disengages from the inner cover bracket 1, causing the inner cover 6 to disengage from the upper cover, thereby achieving the removal of the inner cover 6 and simplifying user operation.

[0070] In one possible solution, see [link / reference]. Figures 13 to 16 The inner locking member 21 can be constructed as a first cup body, and the outer locking member 22 can be constructed as a second cup body. For example, the inner locking member 21 and the outer locking member 22 can be fixedly connected by hooks or ultrasonic fixation, thereby realizing the modular design of the locking assembly 2, simplifying the overall structure of the connecting device 100, and improving the installation efficiency of the inner cover 6.

[0071] Furthermore, in another possible implementation, a radially outward protruding engaging protrusion 211 can be provided on the outer side wall of the first cup body, and an engaging groove 221 can be provided on the inner side wall of the second cup body. The engaging groove 221 engages with the engaging protrusion 211 when the inner locking member 21 is inside the outer locking member 22. Thus, the circumferential positions of the outer locking member 22 and the inner locking member 21 are relatively fixed through the mutual engagement between the engaging protrusion 211 and the engaging groove 221. This allows the outer locking member 22 to drive the inner locking member 21 to rotate synchronously when the outer locking member 22 is rotated, ultimately achieving the overall rotation of the locking assembly 2. This achieves a modular design of the locking assembly 2, simplifies the overall structure of the connecting device 100, and improves the installation efficiency of the inner cover 6.

[0072] It is understandable that the number of engaging protrusions 211 can be one, and engaging slots 221 are set to correspond to engaging protrusions 211.

[0073] For further information, please refer to [link / reference]. Figures 10 to 17 The locking assembly 2 also includes a fixing member 5. The bottom 226 of the outer locking member 22 has a positioning hole 224, and the bottom of the inner locking member 21 has a positioning groove 214. A through hole 2141 is formed in the positioning groove 214. When the inner locking member 21 is inside the outer locking member 22, the fixing member 5 passes through the through hole 2141 and the positioning hole 224 to clamp the inner cover 6 between the inner locking member 21 and the outer locking member 22 and fix them together. By providing the positioning groove 214 and the positioning hole 224, pre-installation positioning can be achieved during the installation of the inner locking member 21 and the outer locking member 22, improving installation speed and positioning accuracy. Furthermore, the fixing member 5 can be any one of a pin, bolt, or rivet. It is understandable that the tightening degree between the outer locking member 22 and the inner locking member 21 can be adjusted by fastening the fixing member 5, so that the first edge 212 and the second edge 222 can stably clamp the inner cover 6 without affecting the relative rotation between the connecting device 100 and the inner cover 6. Moreover, by setting the fixing member 5 to realize the assembly between the inner locking member 21 and the outer locking member 22, it can specifically meet the detachable assembly between the inner locking member 21 and the outer locking member 22, thereby facilitating the disassembly, cleaning or replacement of the inner locking member 21 and / or the outer locking member 22.

[0074] In one possible implementation, the wall of the positioning groove 214 is inclined from the opening to the bottom, and an inclined support rib 225 is provided on the outer wall of the positioning hole post 224, which matches the groove wall. It is understood that by inclining the wall of the positioning groove 214 and providing a support rib 225 with a slope matching the inclination angle of the groove wall on the outer wall of the positioning hole post 224, the installation of the positioning hole post 224 and the positioning groove 214 can be guided, further improving the positioning accuracy between the outer locking member 22 and the inner locking member 21, and thus improving the fit between the outer locking member 22 and the inner locking member 21.

[0075] It is understood that the above-described methods of fixing the outer locking member 22 and the inner locking member 21 are merely illustrative examples. In other feasible solutions, the fixing of the outer locking member 22 and the inner locking member 21 can also be achieved in other ways, and no specific limitations are made here.

[0076] For further information, please refer to [link / reference]. Figures 12 to 14 As shown, the main locking part 213 can be constructed as a boss, which can extend radially inward from the inner wall of the first cup body. The inner cover bracket 1 includes a fixing part 14 and a connecting part 15. The fixing part 14 is used to fix the upper cover of the rice cooker to the upper cover bracket 300, and the connecting part 15 is used to realize the installation connection of the inner locking member 21. Specifically, the auxiliary locking part 11 is provided on the circumferential side wall of the connecting part 15 of the inner cover bracket 1. In one embodiment, the auxiliary locking part 11 can be constructed as a groove. The groove side wall 13, which is consistent with the sliding direction, has a notch 12 for the boss to enter or disengage from the groove. A stop protrusion 131 is constructed at one end of the groove side wall 13 near the notch 12. The stop protrusion 131 protrudes into the groove to limit the main locking part 213 between the stop protrusion 131 and the end of the groove. By constructing the main locking part 213 as a boss and the auxiliary locking part 11 as a groove, the inner locking member 21 and the inner cover bracket 1 can be locked or disengaged based on the relative movement of the boss and the groove, thus enabling the installation of the inner cover 6. The structure is simple and easy to operate. Furthermore, the boss and the inner locking member 21 are constructed as a whole, and the groove and the inner cover bracket 1 are constructed as a whole, eliminating the need for additional installation parts and avoiding the problem of scattered parts that are easily lost, thereby saving costs. In addition, the stop protrusion 131 plays a certain role in suppressing the slippage movement of the main locking part 213 (i.e., the boss), reducing the risk of accidental disengagement of the inner locking member 21 and the inner cover bracket 1 after installation, and improving installation stability.

[0077] It is understandable that constructing the main locking part 213 as a boss and the auxiliary locking part 11 as a groove is only one implementation scheme. In other feasible schemes, the main locking part 213 may also be constructed as a groove and the auxiliary locking part 11 as a boss.

[0078] Specifically, the system includes at least two bosses, which are evenly distributed along the circumference of the inner locking member 21. It also includes at least two sliding grooves, which are evenly distributed along the circumference of the inner cover bracket 1. For example, the system may include two bosses, spaced 180° apart along the circumference of the inner locking member 21; and two sliding grooves, also spaced 180° apart along the circumference of the inner cover bracket 1. By providing two bosses and arranging them 180° apart along the circumference of the inner locking member 21, rotation of the inner locking member 21 during installation can be facilitated. Preferably, the number of sliding grooves corresponds to the number of bosses. It is understood that having two bosses and two sliding grooves is only one preferred embodiment. In other possible implementations, the number of bosses may be three or other numbers, with sliding grooves corresponding to the bosses. The specific number and arrangement can be set according to actual conditions and are not specifically limited here.

[0079] In one possible solution, see [link / reference]. Figure 15 and Figure 16 As shown, the second edge 222 is located below the inner cover 6, and a sealing ring groove 223 is provided on the second edge 222. The sealing ring groove 223 is used to install the lower seal 3 of the inner cover.

[0080] For further information, please refer to [link / reference]. Figure 17 As shown, the inner cover lower seal 3 includes a sealing lip 31 and a base 32, with the radially outward extension dimension of the base 32 being larger than that of the sealing lip 31. When the inner cover lower seal 3 is installed into the sealing ring groove 223, specifically, the base 32 of the inner cover lower seal 31 is installed within the sealing ring groove 223, and the sealing lip 31 of the inner cover lower seal 3 forms an interference seal with the inner cover 6. It can be understood that the interference seal between the sealing lip 31 on the inner cover lower seal 3 and the inner cover 6 improves the airtightness of the rice cooker during operation. Furthermore, the sealing lip 31 easily conforms to its shape, reducing the occurrence of rotational jamming and improving the smoothness of rotation of the locking assembly 2.

[0081] Furthermore, in other feasible solutions, the lower cover seal 3 can also be set as an O-ring, which is installed in the sealing ring groove 223 and has an interference seal with the inner cover 6.

[0082] For further information, please refer to [link / reference]. Figure 11As shown, the connecting device 100 also includes an inner cover upper seal 4, which includes a mounting part 41 and a sealing part 42. The mounting part 41 is mounted on the top of the inner cover bracket 1, and the sealing part 42 abuts against the inner cover 6. By setting the sealing part of the inner cover upper seal 4 to have an interference seal with the inner cover 6, the airtightness of the rice cooker during operation can be improved.

[0083] Preferably, the inner locking member 21 and the outer locking member 22 can be made of food-grade 304 stainless steel (SUS304) to improve the food safety level of the rice cooker. Furthermore, both the inner locking member 21 and the outer locking member 22 can be die-cast in one piece to improve structural strength, high-temperature resistance, and high-pressure resistance.

[0084] Furthermore, the outer wall of the second cup structure (outer locking member 22) is provided with knurling, which can improve the friction between the hand and the outer locking member 22 during operation and prevent the hand from slipping during disassembly and assembly. In addition, the knurling structure can improve the appearance.

[0085] For further details, please refer to [link / reference]. Figure 18 and Figure 19 As shown, the edge of the mounting hole 61 on the inner cover 6 has an arc-shaped rotation limiting area 611. When assembling the locking assembly 2 with the inner cover 6, the inner locking member 21 is inserted into the outer locking member 22 through the mounting hole 61. The engaging protrusion 211 engages with the engaging groove 221 and is located within the rotation limiting area 611, and can only rotate within the range of the rotation limiting area 611. Then, the inner locking member 21 and the outer locking member 22 are fixed together using the fastener 5, and the inner cover 6 is clamped between the first edge 212 of the inner locking member 21 and the second edge 222 of the outer locking member 22. Thus, the assembly of the locking assembly 2 and the inner cover 6 is completed. It should be understood that after the locking assembly 2 and the inner cover 6 are assembled together, the locking assembly 2 can also rotate relative to the inner cover 6, but the range of rotation is limited to the range of the rotation limiting area 611.

[0086] When installing the inner cover 6 onto the upper cover bracket 300, the boss (main locking part 213) is aligned with the notch 12 of the slide groove (auxiliary locking part 11) of the inner cover bracket 1. Then, the boss is inserted into the notch 12, and the locking assembly 2 is rotated to move the boss within the slide groove, thereby engaging the locking assembly 2 with the inner cover bracket 1, thus installing the inner cover 6 onto the upper cover bracket 300. During the sliding of the boss within the slide groove, the engaging protrusion 211 rotates within the rotation limit area 611, thereby causing the locking assembly 2 to rotate relative to the inner cover 6 within the rotation limit area 611. Preferably, the angle of the rotation limit area 611 is 0–90°. When removing the inner cover 6, the boss is first rotated to the notch 12 position on the slide groove, so that the boss disengages from the inner cover bracket 1 at the notch 12 position, thus removing the inner cover 6 from the upper cover bracket 300.

[0087] Furthermore, the engaging protrusion 211 rotates within the rotation limiting area 611, causing the locking assembly 2 to rotate relative to the inner cover 6 within the rotation limiting area 611. Thus, during the installation and removal of the inner cover 6, the locking assembly 2 can rotate relative to the inner cover 6 by rotating the outer locking member 21, while the inner cover 6 remains stationary. This ensures the installation accuracy of components on the inner cover 6 (such as the vent valve) that need to be aligned with the corresponding structure of the outer cover (or upper cover bracket 300) of the rice cooker. Additionally, the rotation limiting area 611 can control the rotation angle of the locking assembly 2, thereby preventing over-rotation. Furthermore, the rotation limiting area 611 is set from the edge of the mounting hole 61, specifically as follows... Figure 9 The mounting hole 61 extends outward from its edge, which enlarges part of the radial dimension of the mounting hole 61, thereby increasing the gap between the locking component 2 and the mounting hole 61, facilitating the assembly of the locking component 2 and the inner cover 6. Furthermore, because only part of the radial dimension of the mounting hole 61 is enlarged, it also cleverly prevents the locking component 2 from detaching from the mounting hole 61.

[0088] Furthermore, the aforementioned inner cover sealing element 4 can improve the airtightness of the rotation limit area 611 during the operation of the rice cooker.

[0089] Furthermore, the rice cooker also includes a first pressure relief assembly and / or a second pressure relief assembly. The first pressure relief assembly includes a solenoid valve, a steel ball, and a first pressure relief valve seat. When the rice cooker reaches the first pressure relief condition, the solenoid valve attracts the steel ball, causing the steel ball to avoid the first pressure relief hole on the first pressure relief valve seat, thus achieving pressure relief. The second pressure relief assembly includes a second pressure relief valve seat and a pressure relief valve core. When the rice cooker reaches the second pressure relief condition, the pressure relief valve core avoids the second pressure relief hole on the second pressure relief valve seat, thus achieving pressure relief. It is understood that the first and second pressure relief conditions can be set according to specific pressure relief conditions. Preferably, the pressure relief pressure when the second pressure relief condition is met is greater than the pressure relief pressure when the first pressure relief condition is met.

[0090] The rice cooker also includes a heating plate, which is positioned between the upper cover support 300 and the inner cover 6. The heating plate integrates a heater to heat the rice cooker during operation. Preferably, the heating plate has a semi-circular structure to avoid obstructing the anti-opening device 200 and connecting device 100 on the inner cover 6. It is understood that a semi-circular shape is only a preferred option; in other feasible solutions, the heating plate can also be circular with through holes to accommodate the upper cover support 300 while avoiding obstruction of the anti-opening device 200 and connecting device 100 on the inner cover 6. This also increases the heating area and improves heating uniformity.

[0091] Furthermore, to facilitate understanding of the working principle of the rice cooker of this invention, the following description, in conjunction with the specific working process, will be provided:

[0092] Specifically, when there is no pressure inside the rice cooker, the locking component 60 is in the position as follows: Figure 7 In the second rotation position shown, i.e., when the lid body is not locked, the rotating bracket 604 can be rotated clockwise to cause the first rotating arm 6041 to drive the locking ring 601 to rotate via the column 602. After the locking ring 601 rotates to its position, the lid serrations 603 on the locking ring 601 lock with the pot body serrations on the pot body 400. At this time, the top rod 20 is located as shown in the figure. Figure 2 The location shown.

[0093] Then, the rice cooker is powered on and begins its normal operation. Taking the rice cooking process as an example, the rice cooker cooking process will be explained in detail below:

[0094] After the rice cooker is powered on and begins heating, the pressure inside gradually increases. When the pressure inside the rice cooker (pressure chamber 101) reaches a preset pressure threshold, the push rod 20 moves upward, pushing the stop rod 30 upward during this movement. When the push rod 20 moves to the... Figure 9 When the position shown is reached, the stop rod 30 enters the rotation path of the second rotating arm 6042, blocking the counterclockwise rotation of the rotating frame 604 to prevent the rice cooker from accidentally opening. When the pressure inside the rice cooker (pressure chamber 101) drops to the preset pressure threshold, the top rod 20 falls back under its own weight and the action of the first return spring 70, and the stop rod 30 falls back under its own weight and the action of the second return spring 80, until the top rod 20 and the stop rod 30 return to their original positions. Figure 2 As shown in the diagram, the stop lever 30 is removed from the rotation path of the second rotating arm 6042, allowing the rotating frame 604 to rotate counterclockwise to open the rice cooker lid.

[0095] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the invention. In the description of the invention, it should be understood that the terms "upper," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and for simplifying the description, and do not 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein.

[0096] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rice cooker lid, characterized in that, include: The cover body has a locking component (60) rotatably mounted on it. When the locking component (60) is in a first rotational position, the cover body is locked; when the locking component (60) is in a second rotational position, the cover body is unlocked. The cover body includes an upper cover (7) and an inner cover (6) mounted on the upper cover (7). The inner cover (6) has a mounting hole (61). An anti-opening device (200) is installed on the lid body. The anti-opening device (200) includes a lifting component that moves up and down driven by the pressure inside the rice cooker and a stop component that moves up and down driven by the lifting component. The stop component moves up and down to enter or leave the rotation path of the locking component (60). The lifting component is configured such that when the pressure inside the rice cooker is greater than a preset pressure threshold, the lifting component moves upward and drives the stop component to move upward to enter the rotation path of the locking component (60) and prevent the locking component (60) from rotating from the first rotation position to the second rotation position. When the pressure inside the rice cooker is less than or equal to the preset pressure threshold, the lifting component moves downward and the stopping component moves downward away from the rotation path of the locking component (60) so that the locking component (60) can rotate from the first rotation position to the second rotation position. The lifting assembly includes a lifting rod (20), a pressure seat (102) with a floating hole (105) at the top, and an elastic membrane (104) disposed at the lower end of the lifting rod (20). The lifting rod (20) reciprocates through the floating hole (105), and the elastic membrane (104) is connected to the pressure seat (102) to bear the pressure inside the rice cooker. When the pressure inside the rice cooker is greater than the preset pressure threshold, the elastic membrane (104) is squeezed upward to deform, thereby driving the lifting rod (20) to move upward. When the pressure inside the rice cooker is less than or equal to the preset pressure threshold, the elastic membrane (104) is compressed upward to deform, thereby driving the lifting rod (20) to move upward. 04) The deformation is restored so that the push rod (20) moves downward; the elastic membrane (104) includes a plurality of alternating protrusions (1041) and recesses (1042), and the push rod (20) includes a support leg (201) inserted into the recess (1042); the lifting assembly also includes a protective hole plate (103), the protective hole plate (103) is disposed at the lower end of the pressure seat (102) and is located outside the elastic membrane (104), the protective hole plate (103) is provided with a protective hole (1031), and the elastic membrane (104) receives the pressure inside the rice cooker through the protective hole (1031); A touch switch is also provided on the cover body. At the first rotation position and / or the second rotation position, the touch switch is triggered by the locking component (60) to correspondingly issue a signal to lock the cover body and / or a signal to unlock the cover body. The rice cooker lid also includes an upper cover bracket (300) and a connecting device (100). The inner cover (6) is detachably installed together with the upper cover bracket (300) through the connecting device (100). The connecting device (100) includes an inner cover bracket (1) and a locking assembly (2). An auxiliary locking part (11) is provided on the side wall of the inner cover bracket (1). The locking assembly (2) includes an inner locking member (21) and an outer locking member (22). A main locking part (213) is provided on the side wall of the inner locking member (21). The main locking part (213) is configured to be able to lock with the auxiliary locking part (11) after rotation or disengage from each other after rotation when the locking assembly (2) rotates. The locking assembly (2) can clamp the inner cover (6) and can rotate relative to the inner cover (6). The locking assembly (2) is rotatably installed in the mounting hole (61). The inner locking member (21) has a first edge (212) extending radially outward, and the outer locking member (22) has a second edge (222) extending radially outward; the inner locking member (21) is located inside the outer locking member (22) and the first edge (212) and the second edge (222) overlap each other, and a portion of the inner cover (6) is clamped between the first edge (212) and the second edge (222).

2. The rice cooker lid according to claim 1, characterized in that, The cover body includes an upper cover bracket (300) and an inner cover (6) detachably mounted on the upper cover bracket (300). The stop assembly is mounted on the upper cover bracket (300), and the lifting assembly is mounted on the inner cover (6).

3. The rice cooker lid according to claim 2, characterized in that, The lifting assembly also includes a first return spring (70), which is sleeved on the top rod (20) to drive the top rod (20) to move. When the pressure in the rice cooker is greater than the preset pressure threshold, the top rod (20) moves upward and squeezes the first return spring (70). When the pressure in the rice cooker is less than or equal to the preset pressure threshold, the first return spring (70) drives the top rod (20) to move downward.

4. The rice cooker lid according to claim 3, characterized in that, The stop assembly includes a stop rod (30) and a second return spring (80). The second return spring (80) is sleeved on the stop rod (30) to drive the stop rod (30) to move. During the upward movement of the top rod (20) and the compression of the first return spring (70), the stop rod (30) is pushed by the top rod (20) and compresses the second return spring (80). During the downward movement of the top rod (20) driven by the first return spring (70), the second return spring (80) drives the stop rod (30) to move downward.

5. The rice cooker lid according to claim 4, characterized in that, The stop assembly also includes a limiting device (40) mounted on the upper cover bracket (300). The limiting device (40) has a through hole (50) extending from top to bottom. The stop rod (30) is supported by the limiting device (40) and reciprocates through the through hole (50).

6. The rice cooker lid according to claim 4, characterized in that, The locking assembly (60) includes a rotating bracket (604) for triggering the touch switch and a locking ring (601) for locking the lid body. A column (602) extends upward along the axial direction of the locking ring (601). The rotating frame (604) includes a rotating shaft (6043) and a first rotating arm (6041) extending radially outward from the rotating shaft (6043). The rotating shaft (6043) is rotatably mounted on the lid body. The first rotating arm (6041) cooperates with the column (602) so that when the rotating shaft (6043) is rotated, the first rotating arm (6041) drives the locking ring (601) to rotate between the first rotation position and the second rotation position.

7. The rice cooker lid according to claim 6, characterized in that, The rotating frame (604) further includes a second rotating arm (6042) extending radially outward from the rotating shaft (6043) and offset from the first rotating arm (6041), wherein the stop rod (30) moves upward to enter the rotation path of the second rotating arm (6042) to prevent the locking assembly (60) from rotating, and the stop rod (30) moves downward to leave the rotation path of the second rotating arm (6042) to allow the locking assembly (60) to rotate.

8. An electric rice cooker, characterized in that, Includes the rice cooker lid as described in any one of claims 1-7.

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