CN116236066A - Electric cooker cover and electric cooker - Google Patents

Abstract

The invention relates to a rice cooker cover and a rice cooker, wherein the rice cooker cover comprises a cover body and an anti-uncovering device arranged on the cover body, a touch switch is arranged on the cover body, a locking assembly is rotatably arranged on the cover body, and when the locking assembly is positioned at a first rotating position, the cover body is locked; when the locking assembly is in the second rotation position, the cover body is unlocked; the invention relates to a touch switch triggered by a locking component to correspondingly send out a signal for locking a cover body and/or a signal for unlocking the cover body, and an anti-cover opening device comprises a jacking component which is driven by pressure in an electric cooker to move up and down and a stop component which is driven by the jacking component to move up and down, wherein the stop component moves up and down to prevent the locking component from rotating when entering a rotating path of the locking component, and the electric cooker can be normally opened after leaving the rotating path of the locking component.

Description

Electric cooker cover and electric cooker

Technical Field

The invention relates to the technical field of household appliances, in particular to an electric cooker cover and an electric cooker.

Background

The electric cooker is a cooker which converts electric energy into heat energy, has various operation functions of steaming, boiling, stewing and the like on food, and is convenient to use, safe and reliable. The multifunctional food warmer not only can cook food, but also can preserve heat, is clean and sanitary to use, has no pollution, saves time and labor, and is one of the necessary tools for modernization of household labor. However, in the process of using the electric rice cooker, if the electric rice cooker is accidentally opened, potential safety hazards can be brought.

Disclosure of Invention

In order to solve the problems in the prior art, the application discloses an electric cooker cover and an electric cooker.

According to one aspect of the present application, an electric rice cooker cover is disclosed, comprising:

the cover body is rotatably provided with a locking assembly, and is locked when the locking assembly is positioned at a first rotating position; when the locking assembly is positioned at the second rotating position, the cover body is unlocked, the cover body comprises an upper cover and an inner cover arranged on the upper cover, and the inner cover is provided with a mounting hole;

the anti-uncovering device is arranged on the cover body and comprises a jacking component which is driven by pressure in the electric cooker to move up and down and a stopping component which is driven by the jacking component to move up and down, and the stopping component moves up and down to enter or leave a rotating path of the locking component;

The jacking component is configured to move upwards and drive the stopping component to move upwards to enter a rotating path of the locking component to prevent the locking component from rotating from the first rotating position to the second rotating position when the pressure in the electric cooker is larger than a preset pressure threshold value; when the pressure in the electric cooker is less than or equal to the preset pressure threshold value, the jacking component moves downwards, and the stopping component moves downwards to leave the rotating path of the locking component so that the locking component can rotate from the first rotating position to the second rotating position;

the cover body is also provided with a touch switch, and the touch switch is triggered by the locking component at the first rotating position and/or the second rotating position so as to correspondingly send out signals for locking the cover body and/or unlocking the cover body. Further, the cover body comprises 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 jacking component is mounted on the inner cover.

Further, the jacking component comprises a push rod, a pressure-bearing seat with a floating hole at the top and an elastic membrane arranged at the lower end of the push rod, the push rod passes through the floating hole in a reciprocating motion manner, and the elastic membrane is connected with the pressure-bearing seat to bear the pressure in the electric cooker;

When the pressure in the electric cooker is greater than the preset pressure threshold, the elastic membrane is extruded upwards to drive the ejector rod to move upwards, and when the pressure in the electric cooker is less than or equal to the preset pressure threshold, the elastic membrane is deformed in a recovery mode to enable the ejector rod to move downwards.

Further, the elastic membrane comprises a plurality of protruding parts and recessed parts which are alternately connected, and the ejector rod comprises supporting legs inserted into the recessed parts.

Further, the jacking assembly further comprises a protection pore plate, the protection pore plate is arranged at the lower end of the pressure bearing seat and is positioned at the outer side of the elastic membrane, a protection hole is formed in the protection pore plate, and the elastic membrane is used for bearing the pressure in the electric cooker through the protection hole.

Further, the jacking assembly further comprises a first reset spring, the first reset spring is sleeved on the ejector rod to drive the ejector rod to move, when the pressure in the electric cooker is greater than the preset pressure threshold value, the ejector rod moves upwards and extrudes the first reset spring, and when the pressure in the electric cooker is less than or equal to the preset pressure threshold value, the first reset spring drives the ejector rod to move downwards.

Further, the stop assembly further comprises a stop rod and a second reset spring, the second reset spring is sleeved on the stop rod to drive the stop rod to move, the stop rod is pushed by the ejector rod and extrudes the second reset spring in the process of moving the ejector rod upwards and extruding the first reset spring, and the second reset spring drives the stop rod to move downwards in the process of driving the ejector rod to move downwards by the first reset spring.

Further, the stop assembly further comprises a limiting device mounted on the upper cover, a through hole is formed in the limiting device in a penetrating mode from top to bottom, and the stop rod penetrates through the through hole in a reciprocating mode.

Further, the locking assembly comprises a rotating frame and a locking pot ring used for locking the cover body, wherein an upright post extends on the locking pot ring along the axial upward direction of the locking pot ring;

the rotating frame comprises a rotating shaft and a first rotating arm which extends outwards from the side wall of the rotating shaft in the radial direction, the rotating shaft is rotatably mounted on the cover body, the first rotating arm is matched with the upright post so as to drive the pot locking ring to rotate between a first rotating position and a second rotating position when the rotating shaft rotates.

Preferably, the turret further includes a second rotating arm extending radially outwardly from the shaft and offset from the first rotating arm, the detent lever moving upwardly into the rotational path of the second rotating arm to prevent rotation of the locking assembly, the detent lever moving downwardly out of the rotational path of the second rotating arm to permit rotation of the locking assembly.

According to another aspect of the present application, an electric rice cooker is also disclosed, which includes the electric rice cooker cover described above.

The electric cooker cover comprises a cover body and an anti-uncovering device arranged on the cover body, wherein a locking assembly is rotatably arranged on the cover body, and the cover body is locked when the locking assembly is positioned at a first rotating position; the cover body is unlocked when the locking assembly is in a second rotational position; the cover opening prevention device comprises a jacking component which is driven by pressure in the electric cooker to move up and down and a stopping component which is driven by the jacking component to move up and down, wherein the stopping component moves up and down to enter or leave a rotating path of the locking component; specifically, when the pressure in the electric cooker is greater than a preset pressure threshold value, the jacking component moves upwards and drives the stop rod to move upwards so as to enter a rotation path of the locking component to stop the locking component from rotating from the first rotation position to the second rotation position; when the pressure in the electric cooker is smaller than or equal to the preset pressure threshold value, the jacking component moves downwards, and the stopping component moves downwards to leave the rotating path of the locking component so that the locking component can rotate from the first rotating position to the second rotating position. Therefore, the locking assembly can be prevented from rotating through the rotating path of the locking assembly, so that the electric cooker cover is prevented from being opened, the electric cooker can be ensured to be normally opened after the electric cooker cover leaves the rotating path of the locking assembly, the convenience in opening and closing the electric cooker cover is improved, the electric cooker cover can be prevented from being accidentally opened, and the use safety of the electric cooker is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of an electric cooker cover according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an anti-uncapping device provided by an embodiment of the present invention;

FIG. 3 is a schematic view of a lock collar according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a turret according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an upper cover bracket according to an embodiment of the present invention;

fig. 6 is a sectional view of an electric rice cooker according to an embodiment of the present invention;

FIG. 7 is a schematic view of the position of the turret when the cap body is unlocked according to an embodiment of the invention;

FIG. 8 is a schematic view of the position of the turret when the cap body is locked according to an embodiment of the invention;

FIG. 9 is a schematic view of a structure of an ejector rod according to an embodiment of the present invention when the ejector rod moves upward to a certain position;

Fig. 10 is a sectional view of a cover of an electric rice cooker according to an embodiment of the present invention;

FIG. 11 is an enlarged view of a portion at I of FIG. 10;

fig. 12 is a schematic structural view of an inner cap holder according to an embodiment of the present invention;

FIG. 13 is a schematic view of an angle configuration of an inner locking member according to an embodiment of the present invention;

FIG. 14 is a schematic view of another angular configuration of an inner locking member provided in accordance with an embodiment of the present invention;

FIG. 15 is a schematic view of an angle configuration of an outer locking member provided in accordance with an embodiment of the present invention;

FIG. 16 is a schematic view of another angle configuration of an outer retaining member provided in accordance with an embodiment of the present invention;

FIG. 17 is a schematic view of the structure of the under-cap seal provided by the embodiment of the present invention;

fig. 18 is a schematic structural view of an inner cap according to an embodiment of the present invention;

FIG. 19 is a cross-sectional view of an angle of an electric rice cooker according to an embodiment of the present invention;

in the figure, 1-inner cap holder, 11-auxiliary locking part, 12-notch, 13-chute sidewall, 131-stopper protrusion, 14-fixing part, 15-connecting part, 2-locking component, 21-inner locking part, 211-snap-in protrusion, 212-first rim, 213-main locking part, 214-positioning groove, 2141-via hole, 22-outer locking part, 221-snap-in groove, 222-second rim, 223-seal ring groove, 224-positioning hole column, 225-support rib, 3-inner cap lower seal, 31-seal lip, 32-base, 4-inner cap upper seal, 41-mounting part, 42-seal part, 5-fixing part, 6-inner cap, 61-mounting hole, 611-rotation limit area, 7-upper cap,

101-pressure-bearing chamber, 102-pressure-bearing seat, 103-protection orifice plate, 1031-protection orifice, 104-elastic membrane, 1041-boss, 1042-recess, 105-floating orifice, 106-inner chamber, 107-sealing gasket, 20-ejector pin, 201-supporting leg, 202-top extension, 203-limit part, 30-stop lever, 301-stop step, 40-stop device, 50-through hole, 60-locking component, 601-lock pot ring, 602-upright post, 603-pot cover saw tooth, 604-rotating frame, 6041-first rotating arm, 6042-second rotating arm, 6043-rotating shaft, 6044-jack, 605-handle, 70-first return spring, 80-second return spring,

100-connecting device, 200-anti-uncovering device, 300-upper cover bracket and 400-pot body.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

The invention discloses an electric cooker cover. As shown in fig. 1 to 9, the electric rice cooker cover includes: the cover body, the locking assembly 60 rotatably mounted on the cover body, and the cover opening prevention device 200 mounted on the cover body.

When the locking assembly 60 is in the first rotational position, the cover body is locked; when the locking assembly 60 is in the second rotational position, the cover body is unlocked.

With continued reference to fig. 2, the anti-uncap device 200 includes a jacking assembly driven to move up and down by pressure within the rice cooker and a stopping assembly driven to move up and down by the jacking assembly, the stopping assembly moving up and down to enter or leave the rotational path of the locking assembly 60.

The jacking component is configured such that the pressure in the electric cooker is greater than a preset pressure threshold, the jacking component moves upwards and drives the stopping component to move upwards to enter the rotating path of the locking component 60 so as to prevent the locking component 60 from rotating from the first rotating position to the second rotating position; when the pressure in the electric cooker is less than or equal to a preset pressure threshold value, the jacking component moves downwards, and the stopping component moves downwards to be away from the rotating path of the locking component 60 so that the locking component 60 can rotate from a first rotating position to a second rotating position;

A trigger switch is further provided on the cover body, and in the first rotation position and/or the second rotation position, the trigger switch is triggered by the locking component 60 to correspondingly send out a signal for locking the cover body and/or a signal for unlocking the cover body.

The first rotational position described above may refer to a position where the cover body may be locked. When the pressure in the electric cooker is greater than the preset pressure threshold value in the first rotation position, the pressure in the electric cooker jacks up the jacking component, and the jacking component jacks up the stopping component to stop the rotation of the locking component 60. The second rotational position may refer to a position where the cover body may be unlocked. At this time, the pressure in the electric rice cooker is less than or equal to the preset pressure threshold, and the jacking assembly and the stopping assembly are retracted so that the blocking locking assembly 60 can rotate. Specifically, when the electric rice cooker is used for stewing rice, after the pressure in the electric rice cooker reaches the preset pressure threshold, the jacking component jacks up the stop component to stop the rotation of the locking component 60, and the cover body is locked and can not rotate to cover the cover, so that the cover is prevented from being opened when the internal pressure of the electric rice cooker is larger than the preset pressure threshold, and the safety of the electric rice cooker is improved. After the pressure is released, the pressure in the electric cooker is equal to the pressure threshold value or is smaller than the pressure threshold value after the electric cooker is pressed down, the jacking component moves downwards, then the stopping component moves downwards, the blocking function is removed from the locking component 60, and the electric cooker can be opened. It can be understood that the lifting component and the stop component can move up and down along with the change of the pressure in the electric cooker, so that the function of preventing the electric cooker from accidentally uncovering can be realized, and the structure is simple and compact.

Further, the rotational path may refer to a path formed by the locking assembly 60 between the first rotational position and the second rotational position, in which the locking assembly 60 may rotate counterclockwise or clockwise.

Further, the preset pressure threshold may be preset, for example, may be 3KPa, 4KPa, etc., and may be specifically set according to the requirement. It should be appreciated that the predetermined pressure threshold should be as small as possible so that when the rice cooker is in use, after a short period of heating (i.e., only a small pressure rise within the rice cooker), the jacking assembly and stopping assembly will rise to prevent the rice cooker from being accidentally uncapped.

Further, the triggering of the trigger switch by the locking assembly 60 may be that the first rotating arm 6041 on the rotating frame 604 touches the trigger switch, the first rotating arm 6041 may be configured to have a bend, and the trigger switch 8 may be two and disposed corresponding to the bend of the first rotating arm 6041. The two tact switches can be touched simultaneously by the first rotating arm 6041. By arranging two touch switches, when one touch switch fails, the other touch switch can normally send out a signal for locking the cover body or a signal for unlocking the cover body, so that the touch switch can be triggered normally. It should be understood that the number of the touch switches may be 3, 4 or other numbers, and may be specifically set according to practical situations, which is not limited herein.

Further, as shown in fig. 3, 4, 7 and 8, the locking assembly 60 includes a rotating frame 604 and a lock collar 601 for locking the cover body. The lock ring 601 is provided with a column 602 extending in an upward direction of the lock ring 601, and the lock ring 601 is provided with a cover saw tooth 603 extending in a radial inward direction of the lock ring 601. The turret 604 includes a rotating shaft 6043, a first rotating arm 6041 extending radially outwardly from the rotating shaft 6043, and a second rotating arm 6042 extending radially outwardly from the rotating shaft 6043 and offset from the first rotating arm 6041. The rotation shaft 6043 is rotatably mounted to the cover body. The first rotating arm 6041 (or the rotating frame 604) is matched with the upright post 602 and can drive the lock ring 601 to rotate, so that the cover saw teeth 603 are locked or separated from the pan body saw teeth 4001 on the pan body 400, and the cover of the electric cooker is covered or opened.

When the pressure in the rice cooker is greater than the preset pressure threshold during stewing, the stop assembly is lifted to prevent the second rotating arm 6042 from rotating, and the rotating frame 604 and the pot locking ring 601 cannot rotate, so that the cover of the rice cooker is prevented from being opened. After the pressure in the electric cooker is less than or equal to the preset pressure threshold, the stop component is lowered to stop the second rotating arm 6042 from rotating, so that the rotating frame 604 and the pot locking ring 601 can be rotated, and the cover of the electric cooker can be opened.

In a specific embodiment, for example, a receptacle 6044 is provided at an end of the first rotating arm 6041. During assembly, the upright 602 is inserted into the insertion hole 6044 to realize the matching of the rotating frame 604 and the lock pot ring 601. In another embodiment, as shown in fig. 4, a handle 605 is further disposed on the rotating frame 604, specifically, the handle 605 extends from the outside to the inside of the electric cooker cover in a rotating manner and is connected with the rotating shaft 6043 of the rotating frame 604, so that the rotating frame 604 can be operated to rotate by rotating the handle 605 outside the electric cooker cover, and the lock ring 601 is driven to rotate to realize the closing and opening of the electric cooker cover, thereby facilitating the operation of a user.

For example, the lock ring 601 may be set to rotate clockwise to rotate forward to lock the cover saw teeth 603 with the saw teeth of the pot body, and the lock ring 601 may be set to rotate counterclockwise to rotate reversely to disengage the cover saw teeth 603 from the saw teeth of the pot body. In one possible implementation, the lid serrations 603 may be four, the four lid serrations 603 being disposed 90 apart along the circumference of the lock collar 601. At this time, the number of the saw teeth of the cooker body is the same as the number of the saw teeth 603 of the cooker cover so as to realize the matching with the saw teeth 603 of the cooker cover, and further realize the locking of the saw teeth of the cooker cover and the saw teeth of the cooker body, so that the cover of the electric cooker is covered.

In one possible implementation, the shaft 6043, the first pivot arm 6041, and the second pivot arm 6042 are integrally formed. It should be understood that the integral formation of the rotating shaft 6043, the first rotating arm 6041 and the second rotating arm 6042 is only a preferred embodiment, and in other embodiments, the rotating shaft 6043, the first rotating arm 6041 and the second rotating arm 6042 may be separately processed and assembled together to form the rotating frame 604.

In a specific embodiment, with continued reference to fig. 1 and 5, the cap body includes an upper cap holder 300 and an inner cap 6, the inner cap 6 being detachably disposed on the upper cap holder 300 by the coupling device 100 to facilitate cleaning and maintenance of the inner cap 6. The lifting assembly is provided on the inner lid 6, and the stopping assembly is provided on the upper lid bracket 300, whereby the lifting assembly and the stopping assembly are of a separate structure, and after the stewing is completed, both the inner lid 6 and the lifting assembly may be contaminated with food. By making the jacking assembly and the stopping assembly as separate structures, the jacking assembly can be cleaned conveniently at the same time when the inner cover 6 is detached for cleaning, thereby greatly facilitating the operation of a user. In another possible implementation, the lifting assembly and the stopping assembly may be integrated without affecting the disassembly and assembly of the inner cap 6, so as to simplify the overall structure of the anti-uncapping device 200.

Further, with continued reference to fig. 2, the jacking assembly includes a pressure-bearing 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, wherein the push rod 20 reciprocally moves through the floating hole 105, and the elastic membrane 104 is connected with the pressure-bearing seat 102 and can seal the entire lower end of the pressure-bearing seat 102, and is supported at the bottom of the pressure-bearing seat 102 to support the pressure in the electric cooker. Specifically, the floating hole 105 and the elastic membrane 104 are both communicated with the inner cavity 106 of the pressure-bearing seat 102; the ejector rod 20 is located in the inner cavity 106, when the electric cooker works normally, the elastic membrane 104 is pressed upwards to deform so as to drive the ejector rod 20 to move upwards when the pressure in the electric cooker is larger than a preset pressure threshold, and when the pressure in the electric cooker is smaller than or equal to the preset pressure threshold, the elastic membrane 104 recovers deformation so as to enable the ejector rod to move downwards. It will be appreciated that the lower end of this embodiment is the end facing the pan body 400 and the upper end is the end opposite the lower end.

Specifically, with continued reference to fig. 9, the elastic membrane 104 includes a plurality of alternately connected protrusions 1041 and recesses 1042, and the jack 20 includes support legs 201 inserted into the recesses 1042. The elastic film 104 can support the ejector rod 20, in addition, the recess 1042 can accommodate the supporting leg 201, and the recess 1042 can limit the ejector rod 20 to ensure the stability of the ejector rod 20 along the vertical direction (i.e., the up-and-down movement direction of the ejector rod 20).

Further, the jacking assembly further comprises a first return spring 70, and the first return spring 70 is sleeved on the ejector rod 20 to drive the ejector rod 20 to move. The push rod 20 further includes a top extension 202 and a stopper 203 extending radially outwardly from the top extension 202, the top extension 202 being connected to the support leg 201 and being in line. The top extension 202 passes through the floating aperture 105 in the pressure bearing seat 102. The first return spring 70 is specifically sleeved on the top extension portion 202, and two ends of the first return spring 70 respectively lean against the limiting portion 203 and the pressure-bearing seat 102. Thus, when the pressure in the electric cooker is greater than the preset pressure threshold, the elastic membrane 104 is extruded by the ejector rod 20 and deforms to drive the ejector rod 20 to move upwards, and the first reset spring 70 is compressed; when the pressure in the electric cooker is less than or equal to the preset pressure threshold value, the first return spring 70 stretches and drives the ejector rod 20 to move downwards.

Further, the jacking assembly further comprises a protection hole plate 103, the protection hole 103 is arranged at the lower end of the pressure bearing seat 102 and is located at the outer side of the elastic die 104, the protection hole plate 103 is provided with a protection hole 1031, and the elastic die 104 receives pressure in the electric cooker through the protection hole 103. Specifically, a pressure-bearing cavity 101 communicated with the interior of the electric cooker is formed between the elastic membrane 104 and the protective orifice plate 103. When the pressure in the pressure-bearing cavity 101 (i.e. the electric cooker) is greater than a preset pressure threshold value, the elastic membrane 104 deforms upwards to drive the ejector rod 20 to move upwards; when the pressure in the pressure-bearing chamber 101 (i.e., the electric rice cooker) is less than or equal to a preset pressure threshold, the shape of the elastic membrane 104 is restored and the ejector rod 20 moves downward.

In one possible implementation, the guard aperture 1031 has a diameter of 1.8mm to 2.2mm. Illustratively, in this embodiment, the guard aperture 1031 may be 2mm in diameter. As can be appreciated, the inventor has found that the shield hole 1031 of such a size can reduce the possibility of rice soup overflowing into the pressure-bearing chamber 101 when rice is stewed, thereby reducing the possibility of contamination of the elastic membrane 104 and improving the cleanliness of the rice cooker. Further, the stopping assembly further comprises a stopping rod 30 and a second return spring 80, wherein the second return spring 80 is sleeved on the stopping rod 30 to drive the stopping rod 30 to move, the stopping rod 30 is pushed by the ejector rod 20 and presses the second return spring 80 in the process that the ejector rod 30 moves upwards and presses the first return spring 70, and the second return spring 80 drives the stopping rod 30 to move downwards in the process that the first return spring 70 drives the ejector rod 20 to move downwards.

Further, the stopper assembly further includes a stopper 40 mounted to the upper cover bracket 300. The stopper 40 has a through hole 50 formed therethrough from top to bottom, and the stopper rod 30 extends through the through hole 50 and is reciprocally movable in the axial direction of the through hole 50. The stop device 40 plays a role in limiting and maintaining the stop lever 30, so that the stop lever 30 is kept stable in the vertical direction (i.e., the movement direction of the stop lever 30) and is prevented from being knocked over by the second rotating arm 6042, and the stop lever 30 is ensured to prevent the rice cooker from being opened under pressure.

In one possible embodiment, the stop lever 30 has a stop step 301 extending radially outward. After the second return spring 80 is sleeved on the stop rod 30, two ends respectively prop against the stop step 301 and the limiting device 40. Specifically, the second return spring 80 is a spring with a gradually decreasing spiral diameter, wherein the end with a larger spiral diameter is located on the stop step 301, and the end with a smaller spiral diameter is connected or abutted on the inner side wall of the limiting device 40.

Further, the invention discloses an electric rice cooker, which comprises a cooker body 400 and the electric rice cooker cover.

Specifically, as shown in fig. 10 to 19, the rice cooker cover further includes an upper cover bracket 300 and a coupling device 100, the inner cover 6 is detachably mounted with the upper cover bracket 300 through the coupling device 100, and the inner cover 6 is constructed with a mounting hole 61; the coupling device 100 includes an inner cap holder 1 and a locking assembly 2, the inner cap holder 1 being mounted on an upper cap holder 300, and an auxiliary locking part 11 being provided on a sidewall of the inner cap holder 1; the locking assembly 2 is rotatably installed at the installation hole 61, and the locking assembly 2 includes an inner locking member 21 and an outer locking member 22; inner retaining member 21 has a first rim 212 extending radially outwardly and outer retaining member 22 has a second rim 222 extending radially outwardly; the inner locking member 21 is positioned within the outer locking member 22 and the first rim 212 and the second rim 222 overlap each other, a portion of the inner cap 6 being clamped between the first rim 212 and the second rim 222; the side wall of the inner locking member 21 is provided with a main locking portion 213 adapted to the auxiliary locking portion 11, and the main locking portion 213 is configured to be capable of being locked to each other or disengaged from each other after rotation of the auxiliary locking portion 11 when the locking assembly 2 is rotated.

The locking assembly 2 of the invention can clamp the inner cap 6 and rotate relative to the inner cap 6, so that when the locking assembly 2 is rotated to mount the inner cap 6 on the upper cap bracket 300, based on the characteristic that the locking assembly 2 can rotate relative to the inner cap 6, the inner locking member 21 on the locking assembly 2 is locked with the inner cap bracket 1, and the relative position between the inner cap 6 and the upper cap bracket 300 is not changed in the assembly process, thereby avoiding the dislocation between other structures on the inner cap 6 and the matched structures on the upper cap bracket 300, and improving the mounting precision of the inner cap 6. Further, when the locking assembly 2 is rotated to detach the inner cap 6, based on the characteristic that the locking assembly 2 clamps the inner cap 6, the inner locking member 21 of the locking assembly 2 is separated from the inner cap bracket 1, and then the inner cap 6 is driven to be separated from the upper cap, so that the inner cap 6 is detached, and the operation of a user is simplified.

In one possible implementation, with continued reference to fig. 13-16, inner retaining member 21 may be configured as a first cup and outer retaining member 22 may be configured as a second cup. Illustratively, the inner locking member 21 and the outer locking member 22 may be fixedly connected using a hook and fixedly connected using ultrasonic waves, so that the modular design of the locking assembly 2 is realized, the overall structure of the connecting device 100 is simplified, and the installation efficiency of the inner cap 6 is improved.

Further, in another possible implementation, a radially outwardly protruding engaging protrusion 211 may be disposed on the outer sidewall of the first cup, and an engaging groove 221 may be disposed on the inner sidewall of the second cup, where the engaging groove 221 engages with the engaging protrusion 211 when the inner locking member 21 is located in the outer locking member 22. Thereby, the circumferential positions of the outer locking member 22 and the inner locking member 21 are relatively fixed by the mutual engagement between the engagement protrusion 211 and the engagement groove 221, so that the outer locking member 22 drives the inner locking member 21 to synchronously rotate when the outer locking member 22 is rotated, and the overall rotation of the locking assembly 2 is finally realized. Thereby realizing the modular design of the locking assembly 2, simplifying the overall structure of the coupling device 100, and improving the installation efficiency of the inner cap 6.

It is understood that the number of the engaging protrusions 211 may be one, and the engaging grooves 221 are provided corresponding to the engaging protrusions 211.

Further, with continued reference to fig. 10-17, locking assembly 2 further includes securing member 5, cup bottom 226 of outer locking member 22 is provided with locating hole post 224, cup bottom of inner locking member 21 is provided with locating slot 214, locating slot 214 is provided with through hole 2141, and securing member 5 passes through hole 2141 and locating hole post 224 to clamp inner cover 6 between inner locking member 21 and outer locking member 22 and secure together when inner locking member 21 is positioned within outer locking member 22. By providing the positioning groove 214 and the positioning hole column 224, the pre-installation positioning at the time of the installation of the inner locking member 21 and the outer locking member 22 can be performed, and the installation speed and the installation positioning accuracy can be improved. Further, the fixing member 5 may be any one of a pin, a bolt, and a rivet. It will be appreciated that the degree of locking between the outer locking member 22 and the inner locking member 21 can be adjusted by tightening the securing member 5 such that the first rim 212 and the second rim 222 can stably clamp the inner lid 6 without affecting the relative rotation between the attachment device 100 and the inner lid 6. And, through setting up the assembly between the mounting 5 realization interior retaining member 21 and the outer retaining member 22, can specifically satisfy the detachable assembly between interior retaining member 21 and the outer retaining member 22 to make things convenient for the dismantlement cleaning or the change of interior retaining member 21 and/or outer retaining member 22.

In one possible implementation, the groove wall of the positioning groove 214 is inclined from the groove opening to the groove bottom, and the outer side wall of the positioning hole column 224 is further provided with an inclined supporting rib 225, and the supporting rib 225 is matched with the groove wall. It can be appreciated that by obliquely arranging the groove wall of the positioning groove 214 and arranging the support rib 225 having a matching inclined plane with the inclination angle of the groove wall on the outer side wall of the positioning hole column 224, the positioning hole column 224 and the positioning groove 214 can be installed and positioned, the guiding function is achieved for the installation between the positioning hole column 224 and the positioning groove 214, the positioning precision between the outer locking member 22 and the inner locking member 21 is further improved, and the installation fit degree between the outer locking member 22 and the inner locking member 21 is further improved.

It will be appreciated that the above-described embodiments of the securing connection between the outer locking member 22 and the inner locking member 21 are merely illustrative, and that the securing connection between the outer locking member 22 and the inner locking member 21 may be achieved in other manners, and is not particularly limited herein.

Further, with continued reference to fig. 12-14, the primary locking portion 213 may be configured as a boss that may extend radially inward from the inner wall of the first cup. The inner cover bracket 1 includes a fixing portion 14 and a connecting portion 15, wherein the fixing portion 14 is fixedly connected with an upper cover of the electric rice cooker through the upper cover bracket 300, and the connecting portion 15 is used for realizing installation connection of the inner locking member 21. Specifically, the auxiliary locking portion 11 is provided on the circumferential side wall of the connecting portion 15 of the inner lid bracket 1. In one embodiment, the auxiliary locking portion 11 may be configured as a chute, a chute sidewall 13 of the chute, which is consistent with the sliding direction, is provided with a notch 12 for the boss to enter or leave the chute, one end of the chute sidewall 13, which is close to the notch 12, is configured with a blocking protrusion 131, and the blocking protrusion 131 protrudes into the chute to limit the main locking portion 213 between the blocking protrusion 131 and the end of the chute. Through constructing main locking portion 213 into the boss, construct auxiliary locking portion 11 into the spout, can realize interior retaining member 21 and inner cup support 1's interlock or break away from each other based on the relative motion of boss and spout, can realize the installation of inner cup 6, simple structure, convenient operation, and boss and interior retaining member 21 overall structure, spout and inner cup support 1 overall structure need not introduce extra installation part, can avoid the part scattered, the problem of losing easily, practice thrift the cost. Further, the blocking protrusion 131 plays a certain role in inhibiting the sliding movement of the main locking portion 213 (i.e., the boss), thereby reducing the risk of accidental detachment of the inner locking member 21 from the inner cap holder 1 after installation, and improving the installation stability.

It will be appreciated that the primary locking portion 213 is configured as a boss and the secondary locking portion 11 is configured as a runner, just one embodiment. In other embodiments, the main locking portion 213 may be formed as a slotted guide and the auxiliary locking portion 11 may be formed as a boss.

Specifically, the boss includes at least two, at least two bosses are uniformly distributed along the circumferential direction of the inner locking member 21, the chute includes at least two, at least two chutes are uniformly distributed along the circumferential direction of the inner cover bracket 1, and for example, the boss in the application may include two, two bosses are arranged at 180 ° intervals along the circumferential direction of the inner locking member 21; the two sliding grooves are arranged at 180-degree intervals along the circumferential direction of the inner cover bracket 1. By arranging two bosses and arranging the two bosses at 180-degree intervals along the circumferential direction of the inner locking member 21, the inner locking member 21 can be conveniently rotated during installation. Preferably, the number of the sliding grooves corresponds to the number of the bosses. It will be appreciated that the number of bosses is two and the number of runners is two, but one preferred embodiment. In other possible implementation schemes, the number of the bosses may be 3 or other numbers, the sliding grooves are correspondingly arranged with the bosses, and the specific number and the arrangement mode may be set according to actual situations, which is not limited in detail herein.

In one possible implementation, with continued reference to fig. 15 and 16, the second rim 222 is disposed below the inner cap 6, and the second rim 222 is provided with a seal ring groove 223, and the seal ring groove 223 is used to mount the inner cap lower seal member 3.

Further, with continued reference to fig. 17, the under-cap seal 3 includes a sealing lip 31 and a base 32, the base 32 extending radially outwardly a greater dimension than the sealing lip 31. When the under-cap seal 3 is mounted to the seal ring groove 223, specifically, the base 32 of the under-cap seal 31 is mounted into the seal ring groove 223, the seal lip 31 of the under-cap seal 3 is interference-sealed with the inner cap 6. It will be appreciated that the tightness of the electric rice cooker during operation can be improved by the interference seal of the sealing lip 31 on the lower inner cover sealing member 3 with the inner cover 6. In addition, the seal lip 31 is easy to change along with the shape, so that the occurrence of the rotation blocking phenomenon can be reduced, and the rotation smoothness of the locking assembly 2 can be improved.

Further, in other embodiments, the lower cap seal 3 may also be provided as an O-ring that fits within the seal ring groove 223, with an interference seal with the inner cap 6.

Further, with continued reference to fig. 11, the attachment device 100 further includes an inner lid upper seal member 4, the inner lid upper seal member 4 including a mounting portion 41 and a sealing portion 42, the mounting portion 41 being mounted on top of the inner lid bracket 1, the sealing portion 42 abutting against the inner lid 6. By arranging the sealing part of the sealing piece 4 on the inner cover to be in interference sealing with the inner cover 6, the air tightness of the electric cooker in the working process can be improved.

Preferably, the inner locker 21 and the outer locker 22 may be made of food grade 304 stainless steel (SUS 304) material, thereby improving the food safety level of the rice cooker. Further, the inner locking member 21 and the outer locking member 22 can be formed by die casting at one time, so as to improve the structural strength, high temperature resistance and high pressure resistance.

Further, the knurling is arranged on the outer side wall of the second cup body structure (the outer locking piece 22), so that the friction between hands and the outer locking piece 22 in the process of operating the outer locking piece 22 can be improved, and the hands are prevented from sliding during disassembly and assembly. And, knurling structure can improve outward appearance aesthetic measure.

Further, referring to fig. 18 and 19, the edge of the mounting hole 61 of the inner cap 6 is configured with an arc-shaped rotation limit region 611. When the locking assembly 2 is assembled with the inner cap 6, the inner locking member 21 is assembled into the outer locking member 22 through the mounting hole 61, the engagement protrusion 211 is engaged into the engagement groove 221 and the engagement protrusion 211 is located in the rotation limiting region 611 and can be rotated only within the range of the rotation limiting region 611. The securing member 5 is then used to secure the inner retaining member 21 and the outer retaining member 22 together, with the inner cap 6 being clamped between the first edge 212 of the inner retaining member 21 and the second edge 222 of the outer retaining member 22. Thereby, the assembly of the locking assembly 2 with the inner cap 6 is completed. It should be appreciated that after the locking assembly 2 is assembled with the inner cap 6, the locking assembly 2 may also be rotated relative to the inner cap 6, with the range of rotation being limited to the range of the rotation limit 611.

When the inner lid 6 is mounted to the upper lid bracket 300, the boss (main locking portion 213) is aligned with the notch 12 of the slide groove (auxiliary locking portion 11) of the inner lid bracket 1. Subsequently, the boss is inserted into the notch 12 and then the locking assembly 2 is rotated to slide in the slide groove, thereby fitting the locking assembly 2 with the inner cap holder 1 and thereby achieving the mounting of the inner cap 6 on the upper cap holder 300. In the process that the boss slides in the chute, the clamping protrusion 211 rotates in the range of the rotation limiting region 611, so that the locking assembly 2 rotates relative to the inner cover 6 in the range of the rotation limiting region 611. Preferably, the rotation limit 611 is angled between 0 and 90 °. When the inner cover 6 is detached, the boss is rotated to the notch 12 position on the chute, so that the boss is separated from the inner cover bracket 1 from the notch 12 position, and the inner cover 6 is detached from the upper cover bracket 300.

Further, the engagement protrusion 211 rotates within the rotation limit region 611, so that the locking assembly 2 rotates relative to the inner cap 6 within the rotation limit region 611. Thus, during the process of removing the inner lid 6, the locking assembly 2 can be rotated relative to the inner lid 6 by rotating the outer locking member 21, and the inner lid 6 remains non-rotating, which ensures that the components (e.g., the air release valve, etc.) on the inner lid 6 need to be aligned with the corresponding structure of the outer lid (or the upper lid bracket 300) of the rice cooker with precision in installation. In addition, the rotation limit region 611 can control the rotation angle of the locking assembly 2, thereby preventing the locking assembly 2 from rotating excessively. In addition, the rotation limiting area 611 is disposed from the edge of the mounting hole 61, specifically, as shown in fig. 9, extends outwards from the edge of the mounting hole 61, so that the radial dimension of a part of the mounting hole 61 can be enlarged, thereby increasing the gap between the locking assembly 2 and the mounting hole 61 and facilitating the assembly of the locking assembly 2 and the inner cover 6. Further, since only a part of the radial dimension of the mounting hole 61 is enlarged, the locking assembly 2 can be skillfully prevented from being separated from the mounting hole 61.

Further, the inner cover sealing member 4 can improve the air tightness of the rotation limit region 611 during the operation of the electric rice cooker.

Further, the electric cooker further comprises a first pressure relief assembly and/or a second pressure relief assembly, the first pressure relief assembly comprises an electromagnetic valve, a steel ball and a first pressure relief valve seat, when the electric cooker reaches a first pressure relief condition, the electromagnetic valve attracts the steel ball to be combined, so that the steel ball avoids a first pressure relief hole on the first pressure relief valve seat, pressure relief is realized, the second pressure relief assembly comprises a second pressure relief valve seat and a pressure relief valve core, and when the electric cooker reaches a second pressure relief condition, the pressure relief valve core avoids a second pressure relief hole on the second pressure relief valve seat, and pressure relief is realized. It is understood that the first pressure relief condition and the second pressure relief condition may be set according to a specific pressure relief pressure, and preferably, the pressure relief pressure when the second pressure relief condition is satisfied is greater than the pressure relief pressure when the first pressure relief condition is satisfied.

The electric cooker further comprises a heating plate which is arranged between the upper cover bracket 300 and the inner cover 6, and a heater is integrated in the heating plate so as to heat the electric cooker during working. Preferably, the heating plate may have a semicircular structure to avoid the structure of the cover opening preventing device 200, the connecting device 100, etc. on the inner cover 6 of the electric cooker. It can be appreciated that the shape of the heating plate is set to be a semicircular structure, and in other embodiments, the shape of the heating plate can be set to be a circular structure, and through holes are formed in the circular structure, so that the cover opening preventing device 200, the connecting device 100 and the like on the inner cover 6 of the electric cooker can be avoided while the upper cover bracket 300 is adapted, and meanwhile, the heating area can be increased, and the heating uniformity can be improved.

Further, in order to facilitate understanding of the working principle of the electric cooker of the invention, the following description is made with reference to specific working procedures:

specifically, when there is no pressure in the electric rice cooker, the locking assembly 60 is in the second rotation position shown in fig. 7, i.e. when the cover body is not locked, the rotating frame 604 can be rotated clockwise at this time, so that the first rotating arm 6041 drives the locking ring 601 to rotate through the upright 602. After the lock ring 601 rotates in place, the cover serrations 603 on the lock ring 601 lock with the pot body serrations on the pot body 400. At this time, the jack 20 is positioned as shown in fig. 2.

Then, the electric rice cooker is electrified, and the electric rice cooker executes a normal flow. Taking a rice cooking process as an example, a rice cooking process of the electric rice cooker is specifically described:

after the electric rice cooker is electrified and begins to heat, the pressure in the electric rice cooker gradually rises, and when the pressure in the electric rice cooker (pressure-bearing cavity 101) rises to a preset pressure threshold value, the ejector rod 20 moves upwards and pushes the stop rod 30 to move upwards in the moving process. When the push rod 20 moves to the position shown in fig. 9, the stop rod 30 enters the rotating path of the second rotating arm 6042, and the rotating frame 604 is prevented from rotating anticlockwise, so that the electric rice cooker is prevented from being accidentally uncapped. When the pressure in the electric cooker (pressure-bearing cavity 101) drops to a preset pressure threshold value, the ejector rod 20 falls back under the action of the self gravity and the first return spring 70, and the stop rod 30 falls back under the action of the self gravity and the second return spring 80 until the ejector rod 20 and the stop rod 30 return to the positions shown in fig. 2. The stop lever 30 is separated from the rotating path of the second rotating arm 6042, and the rotating frame 604 can rotate anticlockwise, so as to realize the cover opening of the electric cooker.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "top", "bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may include one or more of the feature, either explicitly or implicitly. Moreover, the terms "first," "second," and the like, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The foregoing is only illustrative of the present invention and is not to be construed as limiting thereof, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present invention.

Claims (10)

1. An electric rice cooker cover, comprising:

a cover body on which a locking assembly (60) is rotatably mounted, the cover body being locked when the locking assembly (60) is in a first rotational position; when the locking assembly (60) is positioned at the second rotating position, the cover body is unlocked, the cover body comprises an upper cover (7) and an inner cover (6) arranged on the upper cover (7), and the inner cover (6) is provided with a mounting hole (61);

an anti-uncovering device (200) mounted on the cover body, the anti-uncovering device (200) comprising a jacking component driven by pressure in the electric cooker to move up and down and a stopping component driven by the jacking component to move up and down, wherein the stopping component moves up and down to enter or leave a rotating path of the locking component (60);

the jacking assembly is configured to move upward and drive the stopping assembly upward to enter a rotational path of the locking assembly (60) to prevent the locking assembly (60) from rotating from the first rotational position to a second rotational position when the pressure within the electric rice cooker is greater than a preset pressure threshold; when the pressure in the electric cooker is less than or equal to the preset pressure threshold value, the jacking component moves downwards, and the stopping component moves downwards to leave the rotating path of the locking component (60) so that the locking component (60) can rotate from the first rotating position to the second rotating position;

The cover body is also provided with a touch switch, and the touch switch is triggered by the locking component (60) at the first rotation position and/or the second rotation position so as to correspondingly send out a signal for locking the cover body and/or a signal for unlocking the cover body.

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

3. The electric rice cooker cover according to claim 2, wherein the jacking assembly comprises a push rod (20), a pressure-bearing seat (102) with a floating hole (105) at the top and an elastic membrane (104) arranged at the lower end of the push rod (20), the push rod (20) passes through the floating hole (105) in a reciprocating manner, and the elastic membrane (104) is connected with the pressure-bearing seat (102) to bear the pressure in the electric rice cooker;

when the pressure in the electric cooker is greater than the preset pressure threshold value, the elastic membrane (104) is extruded upwards to drive the ejector rod (20) to move upwards; when the pressure in the electric cooker is smaller than or equal to the preset pressure threshold value, the elastic membrane (104) is restored to enable the ejector rod (20) to move downwards.

4. A lid as claimed in claim 3, wherein said elastic membrane (104) comprises a plurality of alternate projections (1041) and recesses (1042), said push rod (20) comprising support legs (201) inserted in said recesses (1042).

5. The electric cooker cover according to claim 3, wherein the jacking assembly further comprises a protection orifice plate (103), the protection orifice plate (103) is arranged at the lower end of the pressure-bearing seat (102) and is located at the outer side of the elastic membrane (104), a protection hole (1031) is arranged on the protection orifice plate (103), and the elastic membrane (104) receives pressure in the electric cooker through the protection hole (1031).

6. The electric rice cooker cover according to claim 3, wherein the jacking assembly further comprises a first reset spring (70), and the first reset spring (70) is sleeved on the ejector rod (20) to drive the ejector rod (20) to move; when the pressure in the electric cooker is greater than the preset pressure threshold value, the ejector rod (20) moves upwards and presses the first reset spring (70), and when the pressure in the electric cooker is less than or equal to the preset pressure threshold value, the first reset spring (70) drives the ejector rod (20) to move downwards.

7. The rice cooker cover according to claim 6, wherein the stopping assembly comprises a stopping rod (30) and a second return spring (80), the second return spring (80) is sleeved on the stopping rod (30) to drive the stopping rod (30) to move, the stopping rod (30) is pushed by the top rod (20) and presses the second return spring (80) in the process of moving the top rod (20) upwards and pressing the first return spring (70), and the second return spring (80) drives the stopping rod (30) to move downwards in the process of driving the top rod (20) to move downwards by the first return spring (70).

8. The rice cooker cover according to claim 7, wherein the stopping assembly further comprises a limiting device (40) mounted on the upper cover bracket (300), the limiting device (40) has a through hole (50) penetrating from top to bottom, and the stopping rod (30) is carried by the limiting device (40) and passes through the through hole (50) in a reciprocating manner.

9. The electric rice cooker cover according to claim 1, wherein the locking assembly (60) comprises a rotating frame (604) for triggering the trigger switch and a locking pot ring (601) for locking the cover body, and a stand column (602) extends on the locking pot ring (601) along the axial upward direction of the locking pot ring (601);

The rotating frame (604) comprises a rotating shaft (6043) and a first rotating arm (6041) which extends outwards from the rotating shaft (6043) in a radial direction, the rotating shaft (6043) is rotatably arranged on the cover body, the first rotating arm (6041) is matched with the upright post (602) so that when the rotating shaft (6043) rotates, the first rotating arm (6041) drives the pot locking ring (601) to rotate between the first rotating position and the second rotating position,

preferably, the turret (604) further includes a second rotating arm (6042) extending radially outwardly from the rotating shaft (6043) and offset from the first rotating arm (6041), the detent lever (30) moves upwardly into the rotational path of the second rotating arm (6042) to prevent rotation of the locking assembly (60), and the detent lever (30) moves downwardly out of the rotational path of the second rotating arm (6042) to permit rotation of the locking assembly (60).

10. An electric rice cooker, characterized by comprising the electric rice cooker cover according to any one of claims 1 to 9.

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