Electric rice cooker and manufacturing method thereof

Abstract

The present application relates to a kind of electric rice cooker and its manufacturing method, comprising: boiler body, boiler body includes seat body and support ring, support ring is set on seat body, support ring is formed with two respectively having opening accommodating cavity with seat body boundary;Two inner containers, can be respectively accommodated in two accommodating cavities by two openings;Two boiler covers, each boiler cover is hinged with support ring by hinge shaft, one boiler cover is set to one accommodating cavity, to open and close the opening of accommodating cavity;Two hinge covers, corresponding setting with two hinge shafts, each hinge cover is covered on boiler body to shield corresponding hinge shaft;Wherein, two hinge covers are integrally formed with support ring.It reduces the number of parts of electric rice cooker, facilitates the assembly of electric rice cooker, makes the structure of whole electric rice cooker simple.Two hinge covers are integrally formed with support ring, relative to the mode that hinge cover and support ring are set in the prior art, avoid the problem that hinge cover and support ring need to be assembled, do not produce the problem of clearance caused by assembly deviation.

Description

Technical Field

[0001] This invention relates to the field of cooking appliance technology, and in particular to an electric rice cooker and its manufacturing method. Background Technology

[0002] An electric rice cooker, also known as a rice pot or electric rice cooker, is a cooking appliance that converts electrical energy into internal energy. It has multiple functions such as steaming, boiling, stewing, and simmering food. An electric rice cooker consists of a main body, an inner pot, and a lid. The inner pot can be operably placed inside the main body or removed from it. The lid is hinged to the main body to open and close the rice cooker.

[0003] Traditional rice cookers typically have one inner pot, which can only cook one type of food or a certain amount of food at a time, limiting its functionality. To accommodate cooking different foods and increase the cooking capacity, rice cookers with two inner pots were developed. These rice cookers include two inner pots and two lids. Each inner pot can be operably placed inside the rice cooker or removed from it. Both lids are hinged to the rice cooker via hinge shafts, and each lid corresponds to one inner pot.

[0004] However, the rice cooker mentioned above has two lids, both of which are hinged to the cook body via hinge shafts. This requires two hinge covers for each hinge shaft. However, these independent and detachable hinge covers would significantly increase the manufacturing cost of the rice cooker. Each additional hinge cover would require an additional mold, and each mold costs at least 30,000 to 80,000 yuan, which is not conducive to cost reduction. Moreover, assembly errors would lead to gaps, which would be detrimental to the later use and maintenance of the rice cooker. Summary of the Invention

[0005] Therefore, it is necessary to provide a rice cooker and its manufacturing method that are easy to assemble, addressing the problem of inconvenient assembly of traditional rice cookers.

[0006] An electric rice cooker, comprising:

[0007] The pot body includes a base and a support ring, the support ring being disposed on the base, and the support ring and the base defining two receiving cavities, each having an opening;

[0008] The two inner liner can be respectively received into the two receiving cavities through the two openings;

[0009] Two pot lids, each hinged to the support ring via a hinge axis, each pot lid corresponding to one receiving cavity to open and close the opening of the receiving cavity; and

[0010] Two hinge covers are provided, corresponding one-to-one with the two hinge shafts, and each hinge cover is placed on the pot body to cover the corresponding hinge shaft;

[0011] The two hinge covers are integrally formed with the support ring.

[0012] In one embodiment, the support ring includes a ring body and two hinged portions connected to the ring body. The ring body is disposed on the base body and defines two receiving cavities with the base body. A pot lid is hinged to one of the hinged portions via a hinge axis.

[0013] The two hinge portions have a first shaft hole wall at their ends away from each other, and a second shaft hole wall at their ends close to each other, the second shaft hole wall comprising a first sub-wall and a second sub-wall that are offset from each other;

[0014] A first half-hole is formed on the first sub-wall facing away from the opening of the seat body, and a second half-hole is formed on the second sub-wall facing the opening of the seat body. The first half-hole and the second half-hole together form a second shaft hole for the hinge shaft to pass through.

[0015] In one embodiment, the second sub-wall is disposed close to the first shaft hole wall relative to the first sub-wall; the hinge cover is connected to the first shaft hole wall, the first sub-wall, and the second sub-wall.

[0016] In one embodiment, the first shaft hole wall is also configured to include a first sub-wall and a second sub-wall that are offset from each other. A first half-hole is formed on the first sub-wall facing away from the opening of the receiving cavity, and a second half-hole is formed on the second sub-wall facing the opening of the receiving cavity. The first half-hole and the second half-hole together form a first shaft hole for the hinge shaft to pass through; or the first shaft hole wall is configured as a single wall, and a first shaft hole for the hinge shaft to pass through is formed thereon.

[0017] In one embodiment, the wall thickness of the first sub-wall and the second sub-wall is 2mm-3mm, the distance between the first sub-wall and the second sub-wall is 0mm-2mm, and the wall thickness of the second shaft hole wall is 4mm-8mm.

[0018] In one embodiment, the thickness of both the first sub-wall and the second sub-wall is 2.5 mm, the distance between the first sub-wall and the second sub-wall is 0.5 mm, and the thickness of the second shaft hole wall is 5.5 mm.

[0019] In one embodiment, the first distance L3 between the surfaces of the two first sub-walls facing each other is less than or equal to 80 mm, preferably 50 mm to 58 mm.

[0020] In one embodiment, the support ring further includes two connecting plates, the hinge portion further includes a connecting wall, the two ends of the connecting wall are respectively connected to the first shaft hole wall and the first sub-wall, the hinge cover and the hinge portion define an installation space, and the connecting plate is disposed in the corresponding installation space; one end of the connecting plate is connected to the hinge portion, and the other end is suspended and extends towards the side close to the hinge cover.

[0021] The rice cooker also includes a torsion spring, which includes a spring body and a first leg and a second leg respectively connected to both ends of the spring body. The spring body is sleeved on the hinge shaft, the first leg is connected to the cooker lid, and the second leg is connected to the connecting plate.

[0022] The hinge cover conceals the torsion spring that is sleeved on the corresponding hinge shaft.

[0023] In one embodiment, the connecting plate has a connecting hole, and the second leg passes through the connecting hole.

[0024] In one embodiment, the support ring further includes a reinforcing rib, which is connected between the ring body and the connecting plate.

[0025] In one embodiment, the support ring further includes a support plate, which is connected to both the ring body and the connecting plate;

[0026] The support plate abuts against the inner wall of the seat.

[0027] In one embodiment, the rice cooker further includes a torsion spring, the torsion spring including a spring body and a first leg and a second leg respectively connected to both ends of the spring body, the first leg being connected to the cook lid and the second leg being connected to the support ring; each hinge cover covers the torsion spring sleeved on the corresponding hinge shaft;

[0028] The hinge cover is provided with a clearance groove for venting the torsion spring.

[0029] In one embodiment, the pot lid includes a top cover and an inner cover, the top cover being hinged to the support ring via the hinge axis;

[0030] The lid also includes a fitting that connects to the inner lid. The inner side of the top cover has a protruding fitting portion, and the inner lid and the top cover are detachably connected through the fitting portion and the fitting.

[0031] In one embodiment, the mating part is sleeved inside the mating member, the inner wall of the mating member is provided with a first limiting part, and the outer wall of the mating part is provided with a second limiting part. The first limiting part and the second limiting part cooperate to restrict the axial separation of the mating part from the mating member.

[0032] In one embodiment, the two pot lids each have adjacent sides that are adjacent to each other, and each adjacent side includes a first part and a second part that are connected to each other;

[0033] When both lids of the pot are closed, the first part is located outside the second part, and there is a second gap between the two first parts and a third gap between the two second parts;

[0034] The second spacing is smaller than the third spacing.

[0035] In one embodiment, the axes of the two hinge axes intersect; when both lids are opened, the distance between the two adjacent sides gradually increases from the end closest to the base to the distance furthest from the base.

[0036] In one embodiment, the pot lid includes a top cover and an inner cover, the inner cover being disposed inside the top cover, the inner cover having a first vent hole, and the top cover having a second vent hole;

[0037] The pot lid also includes a pressure regulating mechanism, which includes an assembly and a pressure regulating component. The assembly is mounted on the top cover and / or the inner cover, and the assembly has a pressure regulating hole. The pressure regulating component includes a connector and a shielding component. The connector is buoyantly mounted on the assembly to drive the shielding component to float and open or close the pressure regulating hole.

[0038] When the pressure regulating component opens the pressure regulating hole, the first air hole communicates with the second air hole through the pressure regulating hole; when the pressure regulating component closes the pressure regulating hole, the first air hole is disconnected from the second air hole.

[0039] The shielding component is a metal component.

[0040] In one embodiment, the rice cooker further includes a steaming basket that can be operably placed in or removed from the inner pot;

[0041] The steaming basket has a disc-shaped structure, and the opposite sides are recessed with handles for easy gripping.

[0042] In one embodiment, the seat includes a base and an operation panel connected to each other, the operation panel is disposed on the base, the support ring is connected to both the base and the operation panel, and the support ring and the base define the receiving cavity.

[0043] The operation panel is tilted downwards from the end connected to the support ring to the end connected to the base.

[0044] In one embodiment, the operation panel includes a plate body and a first flange connected to the edge of the plate body. The first flange is inclined upward relative to the plate body, and the support ring is disposed outside the first flange.

[0045] In one embodiment, the operation panel includes a plate body and a second flange connected to the edge of the plate body. The second flange is inclined downward relative to the plate body and is located outside the base.

[0046] A method for manufacturing a rice cooker, used to manufacture an integrally formed hinge lid and support ring for a rice cooker as described in any of the above claims, the manufacturing method comprising the steps of:

[0047] A front mold and a rear mold are provided, the front mold and the rear mold being joined to form a mold cavity for molding the support ring and the hinge cover, the rear mold having a first semi-circular structure and the front mold having a second semi-circular structure;

[0048] Molten material is injected into the mold cavity;

[0049] The front mold and the rear mold are opened in the first straight direction to form the support ring and the hinge cover. The first semicircular structure forms the second half hole of the hinge part, and the second semicircular structure forms the first half hole of the hinge part.

[0050] In the aforementioned rice cooker, the two hinge covers and support rings are integrally molded. This reduces the number of parts in the rice cooker, facilitating assembly and simplifying the overall structure and appearance. Furthermore, since the two hinge covers and support rings are integrally molded, compared to the separate hinge covers and support rings in existing technologies, the need to assemble the hinge covers onto the support rings is avoided, thus preventing assembly deviations and gaps. Attached Figure Description

[0051] Figure 1 This is a structural diagram of a rice cooker provided in an embodiment of the present invention when one of its lids is in the open state;

[0052] Figure 2 for Figure 1 The diagram shows the structure of the rice cooker with both lids closed.

[0053] Figure 3 for Figure 1 The diagram shows the structure of a rice cooker when one of the inner pots and the steaming basket are removed.

[0054] Figure 4 for Figure 2 A cross-sectional view of the rice cooker shown;

[0055] Figure 5 for Figure 2 The diagram shows the structure of the rice cooker from another perspective.

[0056] Figure 6 for Figure 2 Another cross-sectional view of the rice cooker shown;

[0057] Figure 7 for Figure 6 Enlarged view of point A on the rice cooker shown;

[0058] Figure 8 for Figure 1 The diagram shows the structure of the rice cooker lid.

[0059] Figure 9 for Figure 1 The diagram shows the structure of the support ring and hinge cover of the rice cooker.

[0060] Figure 10 for Figure 2 Another structural view of the rice cooker shown;

[0061] Figure 11 for Figure 9 A structural diagram of the structure shown from another perspective;

[0062] Figure 12 for Figure 9 Another structural diagram of the structure shown in the image;

[0063] Figure 13 for Figure 12 Enlarged view of section B of the structure shown;

[0064] Figure 14a For use in manufacturing Figure 1 An exploded view of the mold for the support ring and hinge lid in the rice cooker shown.

[0065] Figure 14b for Figure 14a The diagram shows the structure of the mold when the insert is formed into the support ring and hinge cover.

[0066] Figure 14c for Figure 14a The diagram shows the structure of the insert in the mold.

[0067] Figure 14d for Figure 14a The diagram shows the structure of the rear mold insert of the mold.

[0068] Figure 14e for Figure 14a The diagram shown is a structural diagram of the front mold core of the mold.

[0069] Figure 14f This is an enlarged view of point C in the front mold core shown in 14e;

[0070] Figure 15 for Figure 9 Top view of the structure shown;

[0071] Figure 16 for Figure 15 A partial cross-sectional view of surface AA of the structure shown;

[0072] Figure 17 for Figure 9 A structural diagram of the structure shown from another perspective;

[0073] Figure 18 for Figure 17 Enlarged view of point D in the structure shown;

[0074] Figure 19 for Figure 8 Another structural view of the pot lid shown;

[0075] Figure 20 for Figure 2 Another cross-sectional view of the rice cooker shown;

[0076] Figure 21 for Figure 20 Enlarged view of point E on the rice cooker shown;

[0077] Figure 22 for Figure 8 A cross-sectional view of the pot lid shown in the image;

[0078] Figure 23 for Figure 22 Enlarged view of point F on the pot lid shown;

[0079] Figure 24 for Figure 8 Another cross-sectional view of the pot lid shown;

[0080] Figure 25 for Figure 24 Enlarged view of point G on the pot lid shown.

[0081] Explanation of reference numerals in the attached figures:

[0082] 100. Rice cooker; 10. Cooker body; 11. Base; 111. Base; 112. Control panel; 1121. Plate; 1122. First flange; 1123. Second flange; 12. Support ring; 121. Hinge; 1211. First shaft hole wall; 1212. First shaft hole; 1213. Second shaft hole wall; 12131. First sub-wall; 12132. First half-hole; 121 33. Second sub-wall; 12134. Second half-hole; 1214. Second shaft hole; 1215. Connecting wall; 122. Ring body; 123. Connecting plate; 1231. Connecting hole; 124. Reinforcing rib; 125. Support plate; 13. Receiving cavity; 14. Opening; 20. Inner pot; 30. Lid; 31. Adjacent side; 311. First part; 312. Second part; 32. Top cover; 3 21. Connecting part; 3211. Second limiting part; 322. Second vent; 33. Inner cover; 331. First vent; 34. Connecting piece; 341. First limiting part; 35. Pressure regulating mechanism; 351. Assembly piece; 3511. Pressure regulating hole; 352. Pressure regulating piece; 3521. Connecting piece; 3522. Shielding piece; 3523. Through foot; 36. Second hinge hole; 40. Hinge shaft; 5 0. Torsion spring; 51. Spring body; 52. First support leg; 53. Second support leg; 60. Hinge cover; 61. Clearance groove; L1. Second spacing; L2. Third spacing; L3. First spacing; 70. Steaming basket; 71. Handle position; 200. Rear mold core; 300. Rear mold insert; 301. First semi-circular structure; 400. Front mold core; 401. Second semi-circular structure; 500. Front mold insert. Detailed Implementation

[0083] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0084] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0085] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0086] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0087] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0088] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0089] See Figure 1 and Figure 2 An embodiment of the present invention provides a rice cooker 100, specifically, a double-pot rice cooker 100. The rice cooker 100 includes a cooker body 10, an inner pot 20, and a cooker lid 30. The cooker body 10 includes a base 11 and a support ring 12. The support ring 12 is disposed on the base 11, and the support ring 12 and the base 11 define two accommodating cavities 13. Each accommodating cavity 13 has an opening 14 communicating with the outside (see [reference]). Figure 3 ).

[0090] There are two inner pots 20 and two lids 30. The two inner pots 20 can be respectively received into two different receiving cavities 13 through two different openings 14. Each lid 30 is connected by a hinge pin 40 (see...). Figure 4 It is hinged to the support ring 12. One pot lid 30 is set with one receiving cavity 13. Each pot lid 30 can open and close the opening 14 of the corresponding receiving cavity 13.

[0091] The rice cooker 100 provided in this embodiment allows for the placement of two inner pots 20 into two accommodating cavities 13 through two openings 14. Then, two lids 30 are used to cover the openings 14 of the two accommodating cavities 13. This facilitates the cooking of different ingredients in the two inner pots 20, increasing the variety of dishes that can be cooked. It allows for dual-purpose cooking or simultaneous cooking of the same ingredients in both inner pots 20, increasing the amount of food that can be cooked. Compared to the prior art where one rice cooker 100 corresponds to one inner pot 20, this method saves kitchen space.

[0092] It should be noted that the rice cooker 100 provided in this embodiment can cook food in both inner pots 20 at the same time, or it can choose to cook food in only one inner pot 20 while the other inner pot 20 is idle, which increases the flexibility of use.

[0093] In one embodiment, see further. Figure 2 The rice cooker 100 has an axisymmetric structure, meaning it has an axis of symmetry. In this case, the two accommodating cavities 13, the two inner pots 20, and the two lids 30 are symmetrically arranged on both sides of the axis of symmetry. It should be understood that in some other embodiments, the rice cooker 100 may also be arranged in other ways, which are not limited here.

[0094] See Figure 5 The base 11 includes a base 111 and an operation panel 112 connected to each other. The operation panel 112 is disposed on the base 111. A support ring 12 is connected to both the base 111 and the operation panel 112, and the support ring 12 and the base 111 define a receiving cavity 13. Specifically, the operation panel 112 is inclined downward from the end connected to the support ring 12 to the end connected to the base 111. In this way, since the operation panel 112 is inclined downward, if liquid drips (water dripping from the lid 30 or water dripping from the outside) onto the operation panel 112, the liquid will flow down from the operation panel 112 under the action of gravity, avoiding liquid deposition on the operation panel 112, thereby reducing the risk of electric shock when touching the operation panel 112.

[0095] Further, see Figure 6 and Figure 7The control panel 112 includes a plate 1121 and a first flange 1122 connected to the edge of the plate 1121. The first flange 1122 is inclined upward relative to the plate 1121, and the support ring 12 is located outside the first flange 1122. Thus, when liquid drips, such as when liquid drips from the lid 30, the liquid will drip onto the plate 1121 of the control panel 112 and flow downward along the plate 1121 under gravity. The first flange 1122 is located inside the support ring 12 and higher than the plate 1121. The first flange 1122 prevents liquid from entering the rice cooker 100, protecting the circuit board inside the rice cooker 100.

[0096] Furthermore, the control panel 112 also includes a second flange 1123, which is connected to the edge of the panel 1121. The second flange 1123 is inclined downward relative to the panel 1121 and is located outside the base 111. With this configuration, liquid flowing down from the panel 1121 will not enter the interior of the rice cooker 100 due to the blocking effect of the second flange 1123, thus protecting the circuit board inside the rice cooker 100.

[0097] Meanwhile, by setting the first flange 1122 and the second flange 1123, the operation panel 112 avoids setting a seal between the support ring 12 and the operation panel 112, as well as a seal between the operation panel 112 and the base 111, thereby reducing the number of parts in the rice cooker 100 and facilitating the processing and manufacturing of the rice cooker 100.

[0098] For details, please refer to [link / reference]. Figure 8 The rice cooker 100 also includes a torsion spring 50, which includes a spring body 51 and a first leg 52 and a second leg 53 connected to both ends of the spring body 51. The spring body 51 is sleeved on the hinge shaft 40, the first leg 52 is connected to the lid 30, and the second leg 53 is connected to the support ring 12. When the lid 30 is closed, the torsion spring 50 stores force; when the lid 30 is pressed open, the torsion spring 50 provides the force for the lid 30 to spring open. More specifically, two torsion springs 50 are sleeved on each hinge shaft 40, which facilitates opening the lid 30. The lid 30 is provided with a second hinge hole 36 (see...). Figure 8 The hinge shaft 40 passes through the second shaft hole 1214 and the second hinge hole 36 to make the lid 30 and the pot body 10 hinged.

[0099] In one embodiment, see Figure 9 and Figure 10 The rice cooker 100 also includes two hinged covers 60, which correspond to two hinge shafts 40 respectively. Each hinged cover 60 is placed on the cooker body 10 and covers the corresponding hinge shaft 40 and torsion spring 50 to ensure the aesthetics of the rice cooker 100.

[0100] The two hinge covers 60 and the support ring 12 are integrally formed, which reduces the number of parts in the rice cooker 100, facilitates the assembly of the rice cooker 100, and simplifies the overall structure and appearance of the rice cooker 100. Furthermore, since the two hinge covers 60 and the support ring 12 are integrally formed, compared to the separate hinge covers 60 and support ring 12 in the prior art, the problem of needing to assemble the hinge covers 60 onto the support ring 12 is avoided, thus preventing assembly deviations and gaps.

[0101] Specifically, by utilizing the front and rear mold through-hole structure of the mold, the two hinge covers 60 and the support ring 12 are merged (integrated molding). Of course, in other embodiments, other methods can be used to integrally mold the two hinge covers 60 and the support ring 12, and the manufacturing process is not limited here.

[0102] See Figure 11 and Figure 12 The support ring 12 includes a ring body 122, which is disposed on the base 111. The ring body 122 and the base 111 define a receiving cavity 13. The pot lid 30 is hinged to the ring body 122.

[0103] The support ring 122 also includes two hinged portions 121 connected to the ring body 122, and a pot lid 30 is hinged to one of the hinged portions 121 via a hinge shaft 40.

[0104] See Figure 13 The two hinge portions 121 have a first shaft hole wall 1211 at their ends away from each other, and a first shaft hole 1212 for the hinge shaft 40 to pass through is formed on the first shaft hole wall 1211. The two hinge portions 121 have a second shaft hole wall 1213 at their ends close to each other, and the second shaft hole wall 1213 includes a first sub-wall 12131 and a second sub-wall 12133 that are offset from each other, and the second sub-wall 12133 is disposed close to the first shaft hole wall 1211 relative to the first sub-wall 12131. The hinge cover 60 is connected to the first shaft hole wall 1211, the first sub-wall 12131 and the second sub-wall 12133.

[0105] Specifically, a first half-hole 12132 is formed on the first sub-wall 12131, opening away from the seat body 11, and a second half-hole 12134 is formed on the second sub-wall 12133, opening towards the seat body 11. The first half-hole 12132 and the second half-hole 12134 together form a second shaft hole 1214 for the hinge shaft 60 to pass through.

[0106] The second shaft hole wall 1213 is configured as a first sub-wall 12131 and a second sub-wall 12133 that are offset from each other. The first half-hole 12132 on the first sub-wall 12131 and the second half-hole 12134 on the second sub-wall together form a second shaft hole 1214 for the hinge shaft 60 to pass through. The above configuration is very advantageous, so it is easier to manufacture and can simplify the structure of the mold.

[0107] like Figures 14a-14f A mold used for manufacturing the integrally molded support ring 12 and hinge cover 60 is shown. The mold includes a front mold and a rear mold, in which cavities for molding the support ring 12 and hinge cover 60 are formed. Specifically, the rear mold includes a rear mold core 200 and a rear mold insert 300, and the front mold includes a front mold core 400 and a front mold insert 500. The rear mold insert 300 is mounted on the rear mold core 200 and moves with it, while the front mold insert 500 is mounted on the front mold core 400 and moves with it. The rear mold core 200, rear mold insert 300, front mold core 400, and front mold insert 500 together form the aforementioned mold cavities.

[0108] Inserts refer to irregularly shaped accessories used to be embedded in a mold. They are fixed to the mold core and move with it, thus simplifying the mold core. In some embodiments, the insert and the mold core can also be made as an integral structure.

[0109] Specifically, the rear mold insert 300 has a first semi-circular structure 301, which is used to form the second semi-hole 12134; the front mold core 400 has a second semi-circular structure 401, which is used to form the first semi-hole 12132. When the support ring 12 and hinge cover 60 are integrally molded, the injection molding material is poured into the mold cavity and solidifies within the mold cavity. Then along... Figure 14a The first half-hole 12132 and the second half-hole 12134 can be formed by opening the mold in the upper and lower directions.

[0110] If the second shaft hole 1214 is set as a round hole on the side of the two hinge parts 121 that are close to each other, the second shaft hole 1214 must be opened along the axial direction of the hinge shaft 40. In order to form a round hole, the commonly used forming methods include: one method is to set a slider structure in the mold. During demolding, the slider structure moves along the axial direction of the hinge shaft 40 to demold. This not only makes the mold structure complicated, but also the distance between the two hinge parts 121 that need to be formed is small, much smaller than the size required by the slider structure.

[0111] Another method is to use a slanted ejector to form a round hole. However, if a slanted ejector is used, it will inevitably leave ejection marks on the surface of the product, affecting the aesthetics of the plastic product. This is unacceptable when ejecting from the outer surface of the product. Therefore, the above-mentioned shaft hole injection molding method is generally used for surfaces that are not easily observed on the product. Furthermore, after a certain period of use, the fit between the slanted ejector and the mold core is prone to deviation, resulting in problems such as flash on the injection molded parts. At the same time, the slanted ejector is a moving part, which is prone to wear and requires frequent replacement, and the mold structure is complex.

[0112] It should be noted that, due to the size limitation of the non-slider outlet hole, the first shaft hole 1212 can be formed by a slider structure, that is, the first shaft hole wall is set as a single wall, and a first shaft hole 1212 for the hinge shaft to pass through is formed thereon; or it can be set in a similar way to the second shaft hole, that is, the first shaft hole wall is also set to include a first sub-wall and a second sub-wall that are staggered with each other, a first half hole is formed on the first sub-wall facing away from the opening of the receiving cavity, and a second half hole is formed on the second sub-wall facing the opening of the receiving cavity. The first half hole and the second half hole together form the first shaft hole 1212 for the hinge shaft to pass through.

[0113] See Figure 15 and Figure 16 In one embodiment, the first distance L3 between the surfaces of the two first sub-walls 12131 facing each other is less than or equal to 80 mm, preferably 50 mm to 58 mm. The wall thickness of both the first sub-wall 12131 and the second sub-wall 12133 is 2 mm to 3 mm, preferably 2.5 mm; the distance between the first sub-wall 12131 and the second sub-wall 12133 is 0 mm to 2 mm, preferably 0.5 mm; the wall thickness of the second shaft hole wall 1213 (i.e., the total wall thickness of the first sub-wall 12131 and the second sub-wall 12133) is 4 mm to 8 mm, preferably 5.5 mm.

[0114] The specific reasons are as follows: Since the initial distance L3 between the two first sub-walls 12131 is relatively small, and the wall thickness of the first sub-walls 12131 is generally 3-5mm, the angled ejector stroke needs to be more than three times the undercut amount. Therefore, the thickness of the angled ejector component in the mold must be at least 15mm. If the first sub-walls 12131 of the two hinge parts 121 use a suction ejector, a distance of at least 60mm is required. However, with the initial distance L3 between the facing surfaces of the two first sub-walls 12131 being 50mm-58mm, using an angled ejector is difficult and practically impossible, placing excessively high precision requirements on the mold. Therefore, when the initial distance L3 between the facing surfaces of the two first sub-walls 12131 is 50mm-58mm, using a slider structure places even higher demands on the initial distance L3 between the two hinge parts 121.

[0115] See Figure 17 and Figure 18 The support ring 12 also includes a connecting plate 123, and the hinge part 121 also includes a connecting arm 1215. The two ends of the connecting arm 1215 are respectively connected to the first shaft hole wall 1211 and the first sub-wall 12131. The hinge cover 60 and the hinge part 121 define an installation space.

[0116] With the above configuration, since the connecting plate 123 is only connected to the connecting arm 1215 and not to the hinge cover 60, and since part of the outer surface of the rice cooker 100 is formed on the hinge cover 60, the connection plate 123 is prevented from being connected to the structure that is the outer surface of the rice cooker 100, thereby preventing the hinge cover 60 from shrinking during injection molding.

[0117] Specifically, the connecting plate 123 has a connecting hole 1231, and the second leg 53 of the torsion spring 50 passes through the connecting hole 1231. Of course, in other embodiments, the second leg 53 can also be connected to the connecting plate 123 in other ways, which is not limited here.

[0118] The support ring 12 also includes a reinforcing rib 124, which is connected to both the ring body 122 and the connecting plate 123, thereby increasing the strength of the connecting plate 123 and reducing the deformation of the connecting plate 123 under stress during use.

[0119] See Figure 11 and Figure 18 The support ring 12 also includes a support plate 125, which is connected to the ring body 122, the connecting plate 123, and the hinge cover 60. Part of the support plate 125 is located within the cuboid frame structure, while the remaining portion extends outside the cuboid frame structure and abuts against the inner wall of the base 111. The support plate 125 not only strengthens the connecting plate 123 but also supports the outer shell of the base 111.

[0120] In one embodiment, the hinge cover 60 is provided with a clearance groove 61 for the clearance torsion spring 50, so as to avoid the hinge cover 60 interfering with the torsion spring 50 and affecting the opening effect during the opening process.

[0121] In one embodiment, the two lids 30 each have adjacent side surfaces 31 (see [reference]). Figure 1 Each adjacent side 31 includes an interconnected first portion 311 and a second portion 312 (see [reference]). Figure 19 When the two lids 30 are closed at the opening 14, the first part 311 is outside the second part 312. See also Figure 20 and Figure 21When the two lids 30 are closed on the opening 14, there is a second gap L1 between the two first parts 311 and a third gap L2 between the two second parts 312. The second gap L1 is smaller than the third gap L2. This arrangement ensures that the gap on the side of the two adjacent sides 31 closest to the outside is not too large and affects the aesthetics. At the same time, it ensures that the gap on the side of the two adjacent sides 31 closest to the inside is larger, avoiding interference or friction when the two lids 30 are flipped due to manufacturing errors.

[0122] Furthermore, the first portion 311 and the second portion 312 are smoothly transitioned to avoid forming sharp edges that could cause injury to the user. Of course, in other embodiments, the first portion 311 and the second portion 312 may also be transitioned by a stepped surface, which is not limited here.

[0123] Specifically, the first portion 311 is U-shaped, and the second portion 312 is located within the U-shape of the first portion 311. It should be understood that in some embodiments, the specific shape of the first portion 311 is not limited.

[0124] like Figure 19 and Figure 20 As shown, in the height direction, the proportion of the first part 311 occupying the adjacent side 31 is smaller than the proportion of the second part 312 occupying the adjacent side 31, to further avoid interference between the two lids 30. In one specific embodiment, the height of the first part 311 is 3.71 mm, and the height of the second part 312 is 42.06 mm, with the ratio of the first part 311 to the second part 312 being approximately 1 / 10. In other specific embodiments, the specific ratio between the first part 311 and the second part 312 is not limited.

[0125] It should be noted that when the two lids 30 are closed at the opening 14, the second distance L1 at each point of the two first parts 311 can be equal or unequal, and the third distance L2 at each point of the two second parts 312 can be equal or unequal. However, in any case, the third distance L2 at any point of the two second parts 312 is greater than the second distance L1 at any point of the two first parts 311.

[0126] In one specific embodiment, the second spacing L1 at each of the two first portions 311 is set to be equal, and the third spacing L2 at each of the two second portions 312 is set to be equal. For example... Figure 21 As shown, the second spacing L1 is set to be less than 1 mm, preferably 0.88 mm, and the third spacing L2 is set to be greater than 1 mm, preferably 1.3 mm. It should be understood that in some other embodiments, the specific dimensions of the second spacing L1 and the third spacing L2 are not limited.

[0127] In another embodiment, the second spacing L1 of the two first portions 311 is equal at all points, and the third spacing L2 of the two second portions 312 gradually increases from the edge to the center. In yet another embodiment, the second spacing L1 of the two first portions 311 can be gradually decreased from the end connected to the second surface to the end away from the second surface, and the third spacing L2 of the two second portions 312 is equal at all points. In yet another embodiment, the second spacing L1 of the two first portions 311 can be gradually decreased from the end connected to the second surface to the end away from the second surface; and the third spacing L2 of the two second portions 312 can be gradually increased from the edge to the center.

[0128] In one embodiment, the axes of the two hinge shafts 40 intersect, and when both lids 30 are opened 14, the distance between the two adjacent sides 31 gradually increases from the end closest to the base 11 to the end furthest from the base 11. This arrangement further avoids interference between the lids 30 during opening and closing.

[0129] In one embodiment, see Figure 22 and Figure 23 The pot lid 30 includes a top cover 32 and an inner cover 33. The top cover 32 is hinged to the ring body 122 via a hinge shaft 40. The aforementioned adjacent side 31 is formed on the top cover 32. The inner cover 33 is installed inside the top cover 32. In other words, the inner cover 33 is located on the side of the top cover 32 facing the receiving cavity 13. Specifically, the inner cover 33 and the top cover 32 are detachably connected to facilitate cleaning of the pot lid 30.

[0130] The lid 30 also includes a fitting 34, which is detachably connected to the inner lid 33. The inner side of the top lid 32 has a protruding fitting portion 321. The inner lid 33 and the top lid 32 are detachably connected via the fitting portion 321 and the fitting 34. This detachable connection between the inner lid 33 and the top lid 32 simplifies the overall structure of the lid 30. Furthermore, the detachable connection between the inner lid 33 and the top lid 32 via the fitting portion 321 and the fitting 34 facilitates cleaning and prevents the accumulation of dirt and grime.

[0131] Specifically, the inner cover 33 has an assembly hole, and the outer wall of the mating part 34 has an annular groove in the circumferential direction. The mating part 34 passes through the assembly hole, and the inner cover 33 is embedded in the annular groove to achieve the connection between the assembly part 351 and the inner cover 33. Since the assembly part 351 is a silicone part, when it is necessary to disassemble the mating part 34, it is only necessary to forcefully remove the mating part 34 from the inner cover 33.

[0132] The mating part 34 and the mating portion 321 are sleeved together to achieve a detachable connection. Specifically, the mating portion 321 is sleeved inside the mating part 34. The inner wall of the mating part 34 is provided with a first limiting portion 341, and the outer wall of the mating portion 321 is provided with a second limiting portion 3211. The first limiting portion 341 and the second limiting portion 3211 cooperate to restrict the mating portion 321 from separating from the mating part 34 in the axial direction.

[0133] When the inner lid 33 needs to be assembled onto the outer lid 32, the fitting part 321 is simply placed inside the fitting member 34, and the first limiting part 341 and the second limiting part 3211 are engaged in a limiting fit, making assembly convenient. Similarly, when the inner lid 33 needs to be removed from the outer lid 32 for cleaning, force is simply applied to separate the first limiting part 341 from the second limiting part 3211 of the fitting part 321, and to separate the fitting part 321 from the fitting member 34, making disassembly convenient.

[0134] In one embodiment, see Figure 24 and Figure 25 The inner lid 33 has a first vent 331, and the outer lid 32 has a second vent 322. The lid 30 also includes a pressure regulating mechanism 35 (bubble breaker), which includes a fitting 351 and a pressure regulating component 352. The fitting 351 is mounted on the outer lid 32 and / or the inner lid 33, and has a pressure regulating hole 3511. The pressure regulating component 352 is buoyantly mounted on the fitting 351 to open and close the pressure regulating hole 3511. When the pressure regulating component 352 opens the pressure regulating hole 3511, the first vent 331 communicates with the second vent 322 through the pressure regulating hole 3511; when the pressure regulating component 352 closes the pressure regulating hole 3511, the first vent 331 and the second vent 322 are disconnected.

[0135] With the above settings, when the rice cooker 100 is cooking, if the pressure inside the rice cooker 100 is too high or air bubbles are generated, the gas in the inner pot 20 will exert a force on the pressure regulating component 352. The fitting 351 connected to the pressure regulating component 352 will then float upwards, opening the pressure regulating port 3511. At this time, the first vent 331 and the second vent 322 will connect, maintaining a balance between the internal and external pressures of the rice cooker 100, thus regulating the pressure or breaking bubbles. When the pressure inside the rice cooker 100 is low, the fitting 351 will descend under gravity, closing the pressure regulating port 3511. At this time, the first vent 331 and the second vent 322 will disconnect, and the rice cooker 100 will resume normal cooking.

[0136] Furthermore, the assembly 351 can be detachably connected to the face cover 32 and the inner cover 33, and the pressure regulating component 352 can also be detachably connected to the assembly 351, so as to facilitate cleaning of the pressure regulating mechanism 35.

[0137] The pressure regulating component 352 includes a connector 3521 and a shielding component 3522. The connector 3521 is connected to the assembly 351, and the shielding component 3522 is connected to the connector 3521. The connector 3521 can drive the shielding component 3522 to float up and down relative to the assembly 351, thereby opening and closing the pressure regulating port 3511. The connector 3521 has multiple through feet 3523, which are inserted into the assembly 351 to facilitate the up and down floating of the pressure regulating component 352 relative to the assembly 351.

[0138] The connector 3521 is made of silicone, and the shielding part 3522 is made of metal. Compared with the case where the shielding part 3522 is made of silicone, the metal shielding part 3522 is not easy to age and deform during long-term use, that is, it has higher stability and can achieve stable pressure regulation.

[0139] Continue reading Figure 3 The rice cooker 100 also includes a steaming basket 70, which can be operably placed in or removed from the inner pot 20. During cooking, food is placed on the steaming basket 70 to facilitate processing of the food by steam.

[0140] Specifically, the steaming basket 70 has a disc-shaped structure, and its opposite sides are recessed with handle positions 71 for easy gripping. Because the steaming basket 70 is disc-shaped, when placed in the inner liner 20, the outward-curving edge of the steaming basket 70 can contact the inner wall of the inner liner 20, preventing liquids and other liquids from dripping down and affecting the texture of the food below. Simultaneously, the recessed handle positions 71 on the opposite sides of the steaming basket 70 eliminate the need for a carrying handle, making it convenient to lift the steaming basket 70 during use. Furthermore, steam can circulate through the handle positions 71 on both sides, preventing excessive moisture from entering the steaming basket 70 and affecting the texture of the food inside.

[0141] Another embodiment of the present invention also provides a method for manufacturing a rice cooker, used to manufacture the integrally formed hinge cover 60 and support ring 12 in the above-mentioned rice cooker, the manufacturing method including the following steps:

[0142] A front mold and a rear mold are provided, which are joined together to form a mold cavity for molding the support ring 12 and the hinge cover 60. The rear mold has a first semi-circular structure 301 and the front mold has a second semi-circular structure 401.

[0143] Inject molten material into the mold cavity;

[0144] The front mold and the rear mold are in the first straight direction ( Figure 14a The mold is opened in the middle and upper direction to form the support ring 12 and the hinge cover 60. The first semicircular structure 301 forms the second half hole 12134 of the hinge part, and the second semicircular structure 401 forms the first half hole 12132 of the hinge part.

[0145] See Figures 14a-14f The rear mold includes a rear mold core 200 and a rear mold insert 300, and the front mold includes a front mold core 400 and a front mold insert 500. The rear mold insert 300 is mounted on the rear mold core 200 and moves with it, while the front mold insert 500 is mounted on the front mold core 400 and moves with it. The rear mold core 200, rear mold insert 300, front mold core 400, and front mold insert 500 together form the aforementioned mold cavity. The rear mold insert 300 has a first semi-circular structure 301, which is used to form a second semi-hole 12134; the front mold core 400 has a second semi-circular structure 401, which is used to form a first semi-hole 12132.

[0146] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0147] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An electric rice cooker, characterized by comprising: The utility model relates to a double -walled pot, including: A pot body (10) including a seat body (11) and a support ring (12), the support ring (12) is located on the seat body (11), the support ring (12) includes a ring body (122) and two hinged parts (121) connected with the ring body (122), the ring body (122) is located on the seat body (11) and is formed with two accommodating cavities (13) with openings (14) respectively with the seat body (11); Two inner containers (20) can be accommodated in two accommodating cavities (13) through two openings (14) respectively; Two pot covers (30), each pot cover (30) is hinged with the support ring (12) through a hinge shaft (40), one pot cover (30) is arranged corresponding to one accommodating cavity (13) to open and close the opening (14) of the accommodating cavity (13), one pot cover (30) is hinged with one hinged part (121) through one hinge shaft (40);And Two hinge covers (60) are arranged corresponding to two hinge shafts (40) one by one, and each hinge cover (60) is arranged on the pot body (10) to shield the corresponding hinge shaft (40); Wherein, two hinge covers (60) are integrally formed with the support ring (12); The end of two hinged parts (121) away from each other has a first shaft hole wall (1211), and the end of two hinged parts (121) close to each other has a second shaft hole wall (1213), and the second shaft hole wall (1213) includes a first sub-wall (12131) and a second sub-wall (12133) arranged opposite each other; The first half hole (12132) is formed on the first sub-wall (12131) and faces away from the seat opening, the second half hole (12134) is formed on the second sub-wall (12133) and faces the seat (11) opening, and the first half hole (12132) and the second half hole (12134) form a second shaft hole (1214) for penetrating the hinge shaft (40).

2. The electric rice cooker according to claim 1, characterized by The second sub-wall (12133) is arranged close to the first shaft hole wall (1211) relative to the first sub-wall (12131), and the hinge cover (60) is connected with the first shaft hole wall (1211), the first sub-wall (12131) and the second sub-wall (12133).

3. The electric rice-cooker according to claim 1, characterized by The first shaft hole wall (1211) is also arranged to include a first sub-wall and a second sub-wall arranged opposite each other, a first half hole is formed on the first sub-wall and faces away from the opening of the accommodating cavity (13), a second half hole is formed on the second sub-wall and faces the opening of the accommodating cavity (13), and the first half hole and the second half hole form a first shaft hole (1212) for penetrating the hinge shaft (40); Or the first shaft hole wall (1211) is arranged as a single wall, and a first shaft hole (1212) for penetrating the hinge shaft (40) is formed thereon.

4. The electric rice-cooker according to claim 1, characterized by The wall thickness of the first sub-wall (12131) and the second sub-wall (12133) is 2mm-3mm, the distance between the first sub-wall (12131) and the second sub-wall (12133) is 0mm-2mm, and the wall thickness of the second shaft hole wall (1213) is 4mm-8mm.

5. The electric rice-cooker according to claim 4, characterized in that, The wall thickness of the first sub-wall (12131) and the second sub-wall (12133) is 2.5mm, the distance between the first sub-wall (12131) and the second sub-wall (12133) is 0.5mm, and the wall thickness of the second shaft hole wall (1213) is 5.5mm.

6. The electric rice-cooker according to claim 3, characterized in that, The first distance (L3) between the surfaces of the two first sub-walls (12131) facing each other is less than or equal to 80mm.

7. The electric rice-cooker according to claim 6, characterized in that, The first distance (L3) is 50mm-58mm.

8. The electric rice-cooker according to claim 1, characterized by The support ring (12) further comprises two connecting plates (123), the hinge part (121) further comprises a connecting wall (1215), two ends of the connecting wall (1215) are connected with the first shaft hole wall (1211) and the first sub-wall (12131) respectively, the hinge cover (60) and the hinge part (121) define a mounting space, and the connecting plates (123) are arranged in the corresponding mounting spaces; one end of the connecting plate (123) is connected with the hinge part (121), and the other end is suspended and extends towards the side close to the hinge cover (60). The electric rice cooker further comprises a torsion spring (50), the torsion spring (50) comprises a spring body (51) and first and second legs (52, 53) connected to two ends of the spring body (51) respectively, the spring body (51) is sleeved outside the hinge shaft (40), the first leg (52) is connected with the pot cover (30), and the second leg (53) is connected with the connecting plate (123). The hinge cover (60) covers the torsion spring (50) sleeved outside the corresponding hinge shaft (40).

9. The electric rice-cooker according to claim 8, characterized in that, A connecting hole (1231) is formed in the connecting plate (123), and the second leg (53) is arranged in the connecting hole (1231).

10. The electric rice cooker according to claim 8, characterized by The support ring (12) further comprises a reinforcing rib (124) connected between the ring body (122) and the connecting plate (123).

11. The electric rice-cooker according to claim 8, characterized by The support ring (12) further comprises a support plate (125) connected with the ring body (122) and the connecting plate (123). The support plate (125) abuts against the inner wall of the seat body (11).

12. The electric rice-cooker according to claim 1, characterized by The electric rice cooker further comprises a torsion spring (50), the torsion spring (50) comprises a spring body (51) and first and second legs (52, 53) connected to two ends of the spring body (51) respectively, the first leg (52) is connected with the pot cover (30), and the second leg (53) is connected with the support ring (12); each hinge cover (60) covers the torsion spring (50) sleeved outside the corresponding hinge shaft (40). The hinge cover (60) is provided with a clearance groove (61) for avoiding the torsion spring (50).

13. The electric rice-cooker according to claim 1, characterized by The pot cover (30) comprises a surface cover (32) and an inner cover (33), the surface cover (32) is hinged to the support ring (12) through the hinge shaft (40); The pot cover (30) further comprises a matching part (34) connected to the inner cover (33), the inner side of the surface cover (32) is provided with a matching part (321), and the inner cover (33) is detachably connected with the surface cover (32) through the matching part (321) and the matching part (34).

14. The electric rice cooker according to claim 13, characterized by The matching part (321) is sleeved in the matching part (34), the inner wall of the matching part (34) is provided with a first limiting part (341), and the outer wall of the matching part (321) is provided with a second limiting part (3211), the first limiting part (341) and the second limiting part (3211) cooperate to limit the axial separation of the matching part (321) and the matching part (34).

15. The electric rice-cooker according to claim 1, characterized by Two pot covers (30) have adjacent side surfaces (31) adjacent to each other, and each side surface (31) comprises a first part (311) and a second part (312) connected to each other; When both pot covers (30) cover the opening (14), the first part (311) is located outside the second part (312), and the second distance (L1) is between the two first parts (311), and the third distance (L2) is between the two second parts (312); The second distance (L1) is less than the third distance (L2).

16. The electric rice-cooker according to claim 15, characterized by The axes of the two hinge shafts (40) intersect, and when both pot covers (30) open the opening (14), the distance between the two adjacent side surfaces (31) gradually increases from one end close to the seat body (11) to the distance far from the seat body (11).

17. The electric rice-cooker according to claim 1, characterized by The pot cover (30) comprises a surface cover (32) and an inner cover (33), the inner cover (33) is arranged in the surface cover (32), the inner cover (33) is provided with a first air hole (331), and the surface cover (32) is provided with a second air hole (322); The pot cover (30) further comprises a pressure regulating mechanism (35), the pressure regulating mechanism (35) comprises a fitting part (351) and a pressure regulating part (352), the fitting part (351) is fitted on the surface cover (32) and / or the inner cover (33), and the fitting part (351) is provided with a pressure regulating hole (3511); the pressure regulating part (352) comprises a connecting part (3521) and a shielding part (3522), the connecting part (3521) is floatingly fitted on the fitting part (351) to drive the shielding part (3522) to float to open and close the pressure regulating hole (3511); When the pressure regulating piece (352) opens the pressure regulating hole (3511), the first air hole (331) communicates with the second air hole (322) through the pressure regulating hole (3511); when the pressure regulating piece (352) closes the pressure regulating hole (3511), the first air hole (331) is disconnected from the second air hole (322). The shielding piece (3522) is a metal piece.

18. The electric rice-cooker according to claim 1, characterized by The electric rice cooker further comprises a steaming basket (70) which can be operatively placed in or taken out of the inner container (20). The steaming basket (70) is in a disc shape and has a buckle position (71) for hand holding concavely arranged on opposite sides.

19. The electric rice-cooker according to claim 1, characterized by The seat body (11) comprises a base (111) and an operation panel (112) connected with each other, the operation panel (112) is arranged on the base (111), the support ring (12) is connected with the base (111) and the operation panel (112), and the support ring (12) and the base (111) define the accommodating cavity (13). The operation panel (112) is arranged obliquely downward from one end connected with the support ring (12) to the other end connected with the base (111).

20. The electric rice cooker according to claim 19, characterized by The operation panel (112) comprises a plate body (1121) and a first flange (1122) connected with the edge of the plate body (1121), the first flange (1122) is arranged obliquely upward relative to the plate body (1121), and the support ring (12) is arranged outside the first flange (1122).

21. The electric rice-cooker according to claim 19, characterized by The operation panel (112) comprises a plate body (1121) and a second flange (1123) connected with the edge of the plate body (1121), the second flange (1123) is arranged obliquely downward relative to the plate body (1121), and the second flange (1123) is arranged outside the base (111).

22. A manufacturing method for manufacturing the electric rice cooker according to any one of claims 1-21, comprising manufacturing an integrally formed hinge cover and support ring, the manufacturing method comprising steps of: providing a front mold and a rear mold, the front mold and the rear mold are butted to form a mold cavity for forming the support ring (12) and the hinge cover (60), the rear mold has a first semicircular structure, and the front mold has a second semicircular structure; injecting molten material into the mold cavity; opening the front mold and the rear mold in a first linear direction to form the support ring (12) and the hinge cover (60), the first semicircular structure forms a second half hole of the hinge part, and the second semicircular structure forms a first half hole of the hinge part.

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