Shell cover and cooking utensil

Abstract

The embodiment of the utility model provides a shell cover and a cooking utensil, and the shell cover comprises a shell and an inner container supporting block; the shell is provided with an inner container receding opening, and the inner container receding opening penetrates through the shell in the first direction of the shell. The inner container supporting block is arranged on the side, in the first direction, of the shell and located on the peripheral side of the inner container avoiding opening, and the inner container supporting block is formed on the shell through injection molding. According to the shell cover, the production efficiency can be improved, and the production cost can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to an outer shell cover and a cooking appliance. Background Art

[0002] The inner pots of some cooking utensils, such as rice cookers, will be provided with a circle of folded edges around the inner pot opening to facilitate users to take them out. At the same time, in order to separate the inner pot from the outer cover to achieve the purpose of heat insulation, an inner pot support block will also be provided on the outer cover. When the inner pot is placed in the accommodating cavity of the cooking utensils, the folded edges of the inner pot will abut against the inner pot support block, thereby preventing direct contact between the inner pot and the outer cover.

[0003] In the related art, the inner liner support block is generally snap-connected with the outer shell cover. However, due to the relatively large hardness of the inner liner support block, it is difficult to achieve automated assembly, and the manual assembly method is inefficient, which is not conducive to improving production efficiency. Utility Model Content

[0004] In view of this, embodiments of the present application hope to provide an outer shell cover and a cooking utensil that are conducive to improving production efficiency.

[0005] To achieve the above-mentioned object, an embodiment of the present application provides a housing cover for a cooking appliance, comprising:

[0006] A shell having an inner liner avoidance opening, wherein the inner liner avoidance opening penetrates the shell along a first direction of the shell;

[0007] The liner support block is arranged on one side of the shell along the first direction and is located around the liner avoidance opening. The liner support block is injection molded on the shell.

[0008] In one embodiment, the liner support block is molded on the shell by double-color injection molding or inlay injection molding.

[0009] In one embodiment, the shell has a first end face and an annular support portion protruding from the first end face on one side along the first direction. The annular support portion surrounds the circumference of the inner liner avoidance opening and is inclined toward the direction close to the inner liner avoidance opening. The inner liner support block is injection molded on the annular support portion.

[0010] In one embodiment, the shell has a first connection surface intersecting with the first direction on one side along the first direction, and the liner support block has a second connection surface on one side along the first direction, and the second connection surface is connected to the first connection surface.

[0011] In one embodiment, the liner support block has a first outer surface on a side facing away from the second connecting surface along the first direction, and the shape of the first outer surface is the same as that of the first connecting surface.

[0012] In one embodiment, the shell has a mounting seat on one side along the first direction and is located around the inner container avoidance opening, and the mounting seat has the first connecting surface.

[0013] In one embodiment, the mounting seat has a peripheral edge, and the peripheral edge is arranged around the circumference of the first connecting surface to define a mounting groove.

[0014] In one embodiment, the first connecting surface is located on the side of the mounting seat away from the inner liner avoidance opening along the second direction, and the second direction is perpendicular to the first direction; the side of the mounting seat close to the inner liner avoidance opening has a third connecting surface, and the inner liner support block has a fourth connecting surface connected to the third connecting surface.

[0015] In one embodiment, the first connecting surface is inclined relative to the first direction toward the direction close to the third connecting surface; and / or,

[0016] The third connecting surface is inclined relative to the first direction toward a direction approaching the first connecting surface.

[0017] In one embodiment, the liner support block includes a supporting portion having the second connecting surface and a connecting portion having the fourth connecting surface, the connecting portion is arranged on one side of the supporting portion, and the second connecting surface and the fourth connecting surface are respectively located on the side where the supporting portion and the connecting portion are close to each other.

[0018] In one embodiment, the side of the mounting seat provided with the third connecting surface has one of a protrusion and a groove, the side of the connecting portion provided with the fourth connecting surface has the other of the protrusion and the groove, and the protrusion is located in the groove; and / or,

[0019] The connecting portion has an inner container abutting surface on a side facing away from the supporting portion.

[0020] An embodiment of the present application also provides a cooking utensil, comprising an inner pot, an outer shell with an opening, and the outer shell cover described above, wherein the outer shell cover is arranged at the opening, the inner pot is inserted into the outer shell from the inner pot avoidance opening, and the inner pot support block abuts against the inner pot.

[0021] The present invention provides an outer shell and a cooking utensil. By injection-molding the inner pot support block into the shell, the outer shell eliminates the manual assembly steps required in the related art to assemble the shell and the inner pot support block, thereby improving production efficiency and reducing production costs. Furthermore, because the outer shell of the present invention does not require a separate assembly of the inner pot support block, the outer shell of the present invention is more conducive to the automated production of cooking utensils. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of an outer shell provided in an embodiment of the present application;

[0023] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0024] Figure 3 for Figure 1 The structural diagram of the inner tank support block and the mounting seat shown;

[0025] Figure 4 for Figure 1 A schematic structural diagram of the mounting base shown;

[0026] Figure 5 for Figure 1 The structural diagram of the inner liner support block shown;

[0027] Figure 6 for Figure 1 A structural schematic diagram of the inner liner support block from another perspective is shown;

[0028] Figure 7 for Figure 1 The structure diagram of the inner liner support block shown is from another perspective.

[0029] Description of reference numerals:

[0030] 10. Shell; 10a. Inner liner avoidance; 10b. First end surface; 11. Mounting seat; 11a. First connecting surface; 11b. Third connecting surface; 11c. Mounting groove; 11d. Recess; 111. Edge; 12. Annular support portion; 20. Inner liner support block; 20a. Second connecting surface; 20b. Fourth connecting surface; 20c. First outer surface; 21. Support portion; 22. Connecting portion; 22a. Inner liner abutting surface; 222. Protrusion. DETAILED DESCRIPTION

[0031] In the description of the embodiments of the present application, it should be noted that the terms "first direction" and "second direction" are based on the attached Figure 1The orientation or positional relationship shown. These orientation terms are only for the convenience of describing the embodiments of the present application and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application. In addition, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be understood to indicate or imply relative importance.

[0032] An embodiment of the present application provides a cooking utensil, which includes an inner pot, an outer shell, and an outer shell cover.

[0033] Cooking appliances include but are not limited to rice cookers, electric pressure cookers and other appliances.

[0034] The shell has an opening, and the shell cover is arranged at the opening.

[0035] See also Figure 1 The outer shell of the embodiment of the present application includes a shell 10 and an inner liner support block 20. The shell 10 has an inner liner avoidance opening 10a, which penetrates the shell 10 along a first direction. The inner liner support block 20 is disposed on one side of the shell 10 along the first direction and is located around the inner liner avoidance opening 10a. The inner liner support block 20 is injection molded onto the shell 10.

[0036] The inner liner escape opening 10a is used to allow the inner liner to pass through. Specifically, the inner liner is placed into the outer shell through the inner liner escape opening 10a, with the inner liner support block 20 abutting against the inner liner. Because the inner liner escape opening 10a penetrates the shell 10 along the first direction, when the outer shell cover is positioned at the opening of the shell 10, the inner liner is actually placed into the outer shell through the inner liner escape opening 10a along the first direction of the shell 10.

[0037] The inner liner support block 20 is used to support the inner liner to prevent the inner liner from directly contacting the outer shell, thereby achieving the purpose of heat insulation.

[0038] The shell 10 and the liner support block 20 can be made of different materials. For example, the shell 10 can be made of PP (Polypropylene) and the liner support block 20 can be made of PA (Polyamide). Both PP and PA have good mechanical properties and heat resistance.

[0039] In other embodiments, the shell 10 and the liner support block 20 may also be made of the same material.

[0040] The number of the liner support blocks 20 is generally at least two. For example, see Figure 1The number of the inner liner support blocks 20 can be four, and the four inner liner support blocks 20 are spaced apart and arranged around the inner liner avoidance opening 10a, which is conducive to stably supporting the inner liner. In another embodiment, the number of the inner liner support blocks 20 can be two, three, five, or more than five.

[0041] The liner support block 20 is formed on the housing 10 by injection molding. That is, the liner support block 20 and the housing 10 are an integrally molded structure formed by injection molding.

[0042] For housing 10 and liner support block 20 made of different materials, liner support block 20 can be formed on housing 10 through two-color injection molding. Two-color injection molding refers to the process of molding two materials into one piece during a single injection molding process. The two materials can be of different colors, hardness, or other properties.

[0043] For example, the shell 10 and the liner support block 20 can be double-shot molded using a set of molds. The process steps are as follows: two injection moldings are performed in a set of molds. A movable core is provided in the mold cavity of the mold. When the core is in a first position, the core and the side walls of the mold cavity enclose a molding cavity for the shell 10. After the shell 10 is molded and cooled by the first injection molding, the core is moved to a second position to free up the molding cavity for the liner support block 20. The liner support block 20 is then molded by the second injection molding. Double-shot molding using a set of molds only requires partial core pulling of the mold to complete the injection molding, without the need to open the mold midway. The production efficiency of the outer shell is high, which is conducive to improving production capacity.

[0044] Exemplarily, the shell 10 and the liner support block 20 can also be made by the parallel double-shot process in two-color injection molding. "Parallel" means that the injection screws are arranged in parallel, that is, the injection nozzles are arranged in parallel. The process steps of parallel double-shot are: injection molding the shell 10 in the first cavity of the first set of molds. After the shell 10 is cooled and shaped, the first set of molds is opened, and the movable mold of the first set of molds and the shell 10 in the movable mold are rotated 180°, and the mold is closed with the fixed mold of the second set of molds to form a second cavity. The liner support block 20 is injection molded in the second cavity. After the liner support block 20 is cooled and shaped, it is demolded. The parallel double-shot process is equipped with two independent melt and injection systems. The production efficiency of the outer shell cover is relatively high, and the production capacity can also be improved to a certain extent.

[0045] In another embodiment, the liner support block 20 may also be insert-injection-molded into the housing 10 .

[0046] Inlay injection molding is also known as inlay injection molding. Its process steps are as follows: first, the prefabricated shell 10 is placed in the mold cavity of the mold and positioned, and then the molten plastic is injected into the mold cavity to form the liner support block 20. The molten plastic material forms the liner support block 20 on the shell 10. This production method can be produced using an ordinary injection molding machine with a set of melt glue and a set of injection systems. The mold structure is simple, which helps to reduce mold costs.

[0047] The outer shell of the shell 10 is made of PP, and the liner support block 20 is made of PA. Since PA has a lower melting point than PP, when the liner support block 20 is injection-molded onto the shell 10, the molten PA can ablate the surface of the shell 10, achieving localized adhesion and strengthening the connection between the two. Furthermore, PA has a high softening point and does not gradually soften with increasing temperature, but rather softens within a narrow temperature range close to its melting point. Therefore, using PA for the liner support block 20 also ensures that the liner support block 20 provides good support.

[0048] It should be noted that the liner support block 20 and the shell 10 are not limited to being formed into an integral structure by two-color injection molding and inlaid injection molding. In the actual production process, regardless of whether the material of the liner support block 20 and the shell 10 is the same, the liner support block 20 and the shell 10 can be formed into an integral structure by any suitable injection molding process.

[0049] In the prior art, the outer shell and the inner liner support blocks are typically manufactured separately and then assembled together using a snap-on method. Due to the relatively high hardness of the inner liner support blocks, automated assembly is difficult, while manual assembly is time-consuming. For example, an outer shell with four inner liner support blocks requires two workers to assemble simultaneously on the assembly line. This results in low assembly efficiency and high production costs.

[0050] The outer shell of the present invention, by injection molding the inner pot support block 20 onto the housing 10, eliminates the manual assembly steps required in the related art to assemble the housing and the inner pot support block, thereby improving production efficiency and reducing production costs. Furthermore, since the outer shell of the present invention does not require a separate assembly of the inner pot support block 20, the outer shell of the present invention is more conducive to the automated production of cooking utensils.

[0051] In one embodiment, please refer to Figures 1 to 4 The shell 10 may have a first end surface 10b and an annular support portion 12 protruding from the first end surface 10b on one side along the first direction. The annular support portion 12 surrounds the circumference of the inner liner avoidance opening 10a and is inclined toward the direction close to the inner liner avoidance opening 10a. The inner liner support block 20 is injection molded on the annular support portion 12.

[0052] By tilting the annular support portion 12 toward the inner liner escape opening 10a, the structural strength of the annular support portion 12 is increased, and the probability of deformation of the annular support portion 12 due to stress is reduced, thereby extending the service life of the annular support portion 12. Furthermore, because the inner liner support block 20 is disposed on the annular escape opening, the annular support portion 12 is tilted toward the inner liner escape opening 10a. This increases the distance between the outer wall of the inner liner and the housing 10, thereby improving the thermal insulation effect.

[0053] In one embodiment, please refer to Figure 4 and Figure 5 For ease of description, the surfaces connecting the shell 10 and the liner support block 20 may be referred to as the first connecting surface 11a and the second connecting surface 20a, respectively. For shells 10 and liner support block 20 made of different materials, when the liner support block 20's molten adhesive is injection-molded onto the shell 10, the first connecting surface 11a of the shell 10 melts due to heat and fuses with the second connecting surface 20a of the liner support block 20, achieving a fixed connection. For shells 10 and liner support block 20 made of different materials, the first connecting surface 11a and the second connecting surface 20a are actually two virtual surfaces at the junction of the shell 10 and the liner support block 20.

[0054] See also Figure 4 and Figure 5 The first connection surface 11a can be located on one side of the shell 10 along the first direction and intersect with the first direction, and the second connection surface 20a is located on one side of the liner support block 20 along the first direction.

[0055] The first connecting surface 11a intersects the first direction, that is, an angle is formed between the first connecting surface 11a and the first direction. The first connecting surface 11a may be perpendicular to the first direction, or the angle between the first connecting surface 11a and the first direction may be acute or obtuse.

[0056] Since the inner liner is placed into the outer shell from the inner liner avoidance opening 10a along the first direction of the shell 10, the inner liner support block 20 mainly bears the gravity of the inner liner in the first direction. Therefore, the first connecting surface 11a is located on one side of the shell 10 along the first direction and intersects with the first direction. The second connecting surface 20a is located on one side of the inner liner support block 20 along the first direction, so that the inner liner support block 20 can be connected to the shell 10 on one side along the first direction, thereby better ensuring that the inner liner support block 20 can bear the gravity of the inner liner in the first direction, and is not prone to cracking or breaking due to the extrusion of the inner liner.

[0057] For example, see Figure 3 and Figure 6The liner support block 20 has a first outer surface 20c on one side away from the second connection surface 20a along the first direction. The shape of the first outer surface 20c can be the same as that of the first connection surface 11a.

[0058] That is, the first outer surface 20c and the first connecting surface 11a can be molded using the same molding surface so that they have the same shape. For example, if the housing 10 and the liner support block 20 are double-molded using a single mold, since the molding cavity of the liner support block 20 is formed by a moving core, the first connecting surface 11a and the first outer surface 20c can be formed to have the same shape by moving the core.

[0059] In addition, since the first outer surface 20c has the same shape as the first connecting surface 11a, the shape of the second connecting surface 20a is also the same as the shape of the first outer surface 20c. Since the second connecting surface 20a and the first outer surface 20c are respectively located on opposite sides of the inner liner support block 20 along the first direction, the thickness of the inner liner support block 20 along the first direction can be kept roughly the same to ensure that the inner liner support block 20 has better supporting strength.

[0060] In one embodiment, please refer to Figures 2 to 4 The housing 10 may have a mounting seat 11 on one side along the first direction and located around the inner container avoidance opening 10a. The mounting seat 11 has a first connecting surface 11a. In other words, the inner container support block 20 is disposed on the mounting seat 11.

[0061] For the housing 10 having the annular support portion 12 , the mounting seat 11 is equivalently disposed on the annular support portion 12 .

[0062] Please continue reading Figures 2 to 4 The mounting seat 11 may have a peripheral edge 111, which is arranged around the circumference of the first connecting surface 11a to define a mounting groove 11c.

[0063] When the second connecting surface 20a of the liner mounting seat 11 is connected to the first connecting surface 11a of the mounting seat 11, at least part of the structure of the liner mounting seat 11 is located in the mounting groove 11c to enhance the connection stability between the shell 10 and the liner mounting seat 11 and reduce the probability of the liner mounting seat 11 falling off the mounting seat 11 during use.

[0064] See also Figure 4 and Figure 7 The first connection surface 11a can be located on a side of the mounting base 11 facing away from the inner pot avoidance opening 10a along a second direction, where the second direction is perpendicular to the first direction. The mounting base 11 has a third connection surface 11b on a side closer to the inner pot avoidance opening 10a, and the inner pot support block 20 has a fourth connection surface 20b connected to the third connection surface 11b.

[0065] The second direction may be the radial direction of the contour line of the inner container avoidance opening 10a. Figure 1 If the contour line of the inner liner avoidance opening 10a is arc-shaped, the second direction is the radius or straight line direction of the contour line of the inner liner avoidance opening 10a.

[0066] The first connecting surface 11a is located on the side of the mounting seat 11 along the second direction away from the inner pot avoidance opening 10a, and the third connecting surface 11b is located on the side of the mounting seat along the second direction close to the inner pot avoidance opening 10a. That is to say, the first connecting surface 11a and the third connecting surface 11b are respectively located on the opposite sides of the mounting seat 11 along the second direction. This structure can further enhance the connection strength between the mounting seat 11 and the inner pot support block 20.

[0067] See also Figure 4 The first connecting surface 11a can be inclined relative to the first direction toward the third connecting surface 11b. In other words, the first connecting surface 11a is inclined relative to the first direction, and correspondingly, the second connecting surface 20a is also inclined relative to the first direction. By inclining the first connecting surface 11a relative to the first direction toward the third connecting surface 11b, the probability of displacement of the liner support block 20 in the second direction can be reduced.

[0068] Please continue reading Figure 4 The third connecting surface 11b can be inclined relative to the first direction toward the first connecting surface 11a. In other words, the third connecting surface 11b is an inclined surface relative to the first direction, and correspondingly, the fourth connecting surface 20b is also an inclined surface relative to the first direction.

[0069] For example, see Figure 5 and Figure 7 The inner liner support block 20 can be provided with a support portion 21 having a second connecting surface 20a and a connecting portion 22 having a fourth connecting surface 20b. The connecting portion 22 is provided on one side of the support portion 21, and the second connecting surface 20a and the fourth connecting surface 20b are respectively located on the side where the support portion 21 and the connecting portion 22 are close to each other.

[0070] Since the second connecting surface 20a is connected to the first connecting surface 11a and the fourth connecting surface 20b is connected to the third connecting surface 11b, the connecting portion 22 is actually located on a side of the supporting portion 21 close to the inner container avoidance opening 10a along the second direction.

[0071] The supporting portion 21 is used to support the inner container, and the connecting portion 22 is used to set the fourth connecting surface 20b.

[0072] See also Figure 4 and Figure 7The side of the mounting seat 11 provided with the third connection surface 11b may have a groove 11d, and the side of the connecting portion 22 provided with the fourth connection surface 20b may have a protrusion 222, and the protrusion 222 is located in the groove 11d.

[0073] When the third connecting surface 11b is connected to the fourth connecting surface 20b, the protrusion 222 on the fourth connecting surface 20b extends into the groove 11d of the third connecting surface 11b, and the protrusion 222 is connected to the side wall of the groove 11d, thereby further enhancing the connection strength between the mounting seat 11 and the inner tank support block 20.

[0074] In another embodiment, the side of the mounting seat 11 provided with the third connection surface 11 b may have a protrusion 222 , and the side of the connecting portion 22 provided with the fourth connection surface 20 b may have a groove 11 d .

[0075] See also Figure 5 An inner liner abutment surface 22a can also be provided on the side of the connecting portion 22 facing away from the supporting portion 21. When the inner liner is placed into the outer shell from the inner liner avoidance opening 10a, the outer wall surface of the inner liner can abut against the inner liner abutment surface 22a. In other words, the connecting portion 22 can also be used to abut against the inner liner, thereby improving the stability of the inner liner.

[0076] In the description of this application, the descriptions with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in this application and features of different embodiments or examples, unless they are mutually inconsistent.

[0077] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application are intended to be within the scope of protection of the present application.

Claims

1. A housing cover for a cooking appliance, characterized in that: include: A shell having an inner liner avoidance opening, wherein the inner liner avoidance opening penetrates the shell along a first direction of the shell; The liner support block is arranged on one side of the shell along the first direction and is located around the liner avoidance opening. The liner support block is injection molded on the shell.

2. The outer shell according to claim 1, wherein: The liner support block is formed on the shell by double-color injection molding or inlay injection molding.

3. The outer shell according to claim 1 or 2, characterized in that: The shell has a first end face and an annular support portion protruding from the first end face on one side along the first direction. The annular support portion surrounds the circumference of the inner liner avoidance opening and is inclined toward the direction close to the inner liner avoidance opening. The inner liner support block is injection molded on the annular support portion.

4. The outer shell according to claim 1 or 2, characterized in that: The shell has a first connection surface intersecting with the first direction on one side along the first direction, and the liner support block has a second connection surface on one side along the first direction, and the second connection surface is connected to the first connection surface.

5. The outer shell according to claim 4, characterized in that The liner support block has a first outer surface on a side facing away from the second connecting surface along the first direction, and the shape of the first outer surface is the same as that of the first connecting surface.

6. The outer shell according to claim 4, wherein: The shell has a mounting seat on one side along the first direction and is located around the inner container avoidance opening. The mounting seat has the first connecting surface.

7. The outer shell according to claim 6, wherein: The mounting seat has a peripheral edge, which is arranged around the circumference of the first connecting surface to define a mounting groove.

8. The outer shell according to claim 6, wherein: The first connecting surface is located on the side of the mounting seat away from the inner tank avoidance opening along the second direction, and the second direction is perpendicular to the first direction; the side of the mounting seat close to the inner tank avoidance opening has a third connecting surface, and the inner tank support block has a fourth connecting surface connected to the third connecting surface.

9. The outer housing according to claim 8, wherein: The first connecting surface is inclined relative to the first direction toward the direction close to the third connecting surface; and / or, The third connecting surface is inclined relative to the first direction toward a direction approaching the first connecting surface.

10. The outer housing according to claim 8, wherein: The liner support block includes a support portion having the second connecting surface and a connecting portion having the fourth connecting surface. The connecting portion is arranged on one side of the support portion, and the second connecting surface and the fourth connecting surface are respectively located on the side where the support portion and the connecting portion are close to each other.

11. The outer housing according to claim 10, wherein: The mounting seat has one of a protrusion and a groove on one side where the third connecting surface is provided, and the connecting portion has the other of the protrusion and the groove on one side where the fourth connecting surface is provided, and the protrusion is located in the groove; and / or, The connecting portion has an inner container abutting surface on a side facing away from the supporting portion.

12. A cooking utensil, characterized in that: It comprises an inner liner, an outer shell with an opening, and an outer shell cover according to any one of claims 1 to 11, wherein the outer shell cover is arranged at the opening, the inner liner is placed into the outer shell from the inner liner avoidance opening, and the inner liner support block abuts against the inner liner.

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