Lid assembly and cooking appliance having the same

Abstract

The utility model provides a kind of lid assembly and the cooking utensil with it, wherein, lid assembly includes: inner cover;Sealing ring, including sealing main body and the installation portion being set above sealing main body;Press ring, it is set below inner cover, installation portion is clamped between inner cover and press ring;Metal connecting piece, it is embedded and connected in press ring;Fastener, it is threaded in inner cover and metal connecting piece to seal ring and press ring are fixed on inner cover.The technical scheme of the application can effectively solve the problem that fastener is prone to loosen relative to press ring in related technology, affecting the sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of small household appliance technology, and more specifically, to a cover assembly and a cooking appliance having the same. Background Technology

[0002] In related technologies, in order to ensure that pressure cooking appliances can have a sealed cooking chamber for pressure cooking, a sealing ring needs to be installed between the lid assembly and the pot body assembly.

[0003] The sealing ring can be installed on the inner cover via a pressure ring. Specifically, a portion of the sealing ring is connected to the pressure ring, and then the inner cover and the pressure ring are connected with screws or other fasteners to clamp the sealing ring between the inner cover and the pressure ring. The pressure ring is typically an injection-molded part. During the use of pressure cooking appliances, the pressure ring undergoes frequent thermal expansion and contraction, making it prone to deformation and damage. This can lead to the fasteners loosening relative to the pressure ring, affecting the sealing effect of the sealing ring. Utility Model Content

[0004] The main objective of this invention is to provide a cover assembly and a cooking appliance having the same, in order to solve the problem in related technologies where fasteners are prone to loosening relative to the pressure ring, thus affecting the sealing effect.

[0005] To achieve the above objectives, according to one aspect of the present invention, a cover assembly is provided, comprising: an inner cover; a sealing ring including a sealing body and a mounting portion disposed above the sealing body; a pressure ring disposed below the inner cover, with the mounting portion sandwiched between the inner cover and the pressure ring; a metal connector embedded and connected within the pressure ring; and a fastener passing through the inner cover and the metal connector to fix the sealing ring and the pressure ring to the inner cover.

[0006] By employing the technical solution of this utility model, a metal connector is embedded within the pressure ring, and fasteners are connected to the metal connector to fix the sealing ring and the pressure ring to the inner cover. Since the coefficient of thermal expansion of the metal connector is much smaller than that of the pressure ring, its deformation after heating and cooling is minimal. Furthermore, due to the high structural strength of the metal connector, it is not prone to deformation or damage after prolonged use, thus ensuring the firmness of the connection between the fasteners and the metal connector. In addition, because the metal connector is embedded and connected within the pressure ring, even if the pressure ring deforms, it will be pressed tightly against the underside of the inner cover by the metal connector and the fasteners. This allows the mounting portion of the sealing ring to be clamped between the pressure ring and the inner cover, preventing air leakage at the mounting position and ensuring a sealing effect. Therefore, the technical solution of this application effectively solves the problem in related technologies where fasteners easily loosen relative to the pressure ring, affecting the sealing effect.

[0007] Furthermore, the pressure ring and the metal connector are manufactured using an insert molding process. By embedding the metal connector within the pressure ring using this process, the strong connection between the two can be ensured.

[0008] Furthermore, a recess is provided on the outer surface of the metal connector, and the recess is spaced apart from the bottom surface of the metal connector; and / or, a stop tooth is provided on the outer surface of the metal connector, the stop tooth extending along the height direction of the metal connector. The recess allows molten material to flow in to restrict the metal connector from detaching upward from the pressure ring, and the stop tooth restricts the metal connector from moving or rotating laterally relative to the pressure ring, thereby ensuring the reliability of the connection between the metal connector and the pressure ring.

[0009] Furthermore, the metal connector is a nut structure, and the fastener is threadedly engaged with the nut structure. By setting the metal connector as a nut structure and engaging it with the fastener's threads to fix the sealing ring, it has the advantages of simple structure and reliable connection.

[0010] Furthermore, the pressure ring is provided with a first reinforcing rib, which extends along the circumferential direction of the pressure ring. The first reinforcing rib can increase the structural strength of the pressure ring, making it less prone to deformation or damage after long-term use.

[0011] Furthermore, a second reinforcing rib is provided on the pressure ring, intersecting with the first reinforcing rib. This intersecting arrangement of the first and second reinforcing ribs provides better structural reinforcement of the pressure ring.

[0012] Furthermore, there are multiple metal connectors, with one located at the weld position of the pressure ring. By providing a metal connector at the weld position of the pressure ring, even if the pressure ring deforms at this location, the pressure ring will still press against the sealing ring under the tensile force between the metal connector and the fastener, thus ensuring a sealing effect.

[0013] Furthermore, the cover assembly includes a plurality of fasteners spaced apart along the circumferential direction of the pressure ring. These fasteners include a first fastener and a plurality of second fasteners. The first fasteners are positioned corresponding to the welding position of the pressure ring, and the plurality of second fasteners are equally spaced along the circumferential direction of the pressure ring. By adding a first fastener at the welding position of the pressure ring, even if the pressure ring deforms at this position, the pressure ring will still press against the sealing ring under the tensile force between the metal connector and the fastener, thus ensuring a sealing effect.

[0014] Furthermore, the cover assembly includes a plurality of fasteners spaced apart along the circumferential direction of the pressure ring, with the spacing between each pair of fasteners gradually increasing in the direction away from the welding position of the pressure ring. By making the fasteners denser at locations where the structural strength of the pressure ring is relatively low and sparser at locations where the structural strength of the pressure ring is relatively high, the clamping effect of the sealing ring can be effectively guaranteed while reducing the number of fasteners and lowering the cost of the cover assembly.

[0015] According to another aspect of this utility model, a cooking appliance is provided, including a lid assembly, wherein the lid assembly is the lid assembly described above. The lid assembly described above effectively solves the problem in related technologies where fasteners easily loosen relative to the pressure ring, affecting the sealing effect. The cooking appliance having the lid assembly described above also has the aforementioned advantages. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 An exploded structural diagram of an embodiment of the cover assembly according to the present invention is shown;

[0018] Figure 2 It shows Figure 1 Enlarged view of a portion of the cover assembly structure;

[0019] Figure 3 It shows Figure 1 A three-dimensional structural diagram of the pressure ring of the cover assembly;

[0020] Figure 4 It shows Figure 3 Enlarged view of part of the pressure ring structure;

[0021] Figure 5 It shows Figure 1 A three-dimensional structural diagram of the metal connectors of the cover assembly;

[0022] Figure 6 It shows Figure 1 Enlarged view of a portion of the sealing ring structure of the cover assembly;

[0023] Figure 7 It shows Figure 1 A three-dimensional structural diagram of the inner cover of the cover assembly;

[0024] Figure 8 It shows Figure 7 A cross-sectional view of the inner cover;

[0025] Figure 9 A cross-sectional schematic diagram of an embodiment of a cooking appliance according to the present invention is shown;

[0026] Figure 10 It shows Figure 9 A magnified view of point A on the cooking utensil.

[0027] The above figures include the following reference numerals:

[0028] 10. Inner cover; 11. First connecting hole; 12. Second connecting hole; 13. Main body; 14. Connecting part;

[0029] 20. Sealing ring; 21. Sealing body; 22. Mounting part;

[0030] 30. Pressure ring; 31. First reinforcing rib; 32. Second reinforcing rib; 33. Mounting position; 34. Mounting groove;

[0031] 40. Metal connector; 41. Recessed portion; 42. Stop tooth; 43. First connector; 44. Second connector;

[0032] 50. Fastener; 51. First fastener; 52. Second fastener;

[0033] 60. Clay pot body components. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0035] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0037] like Figure 1 , Figure 2 and Figure 6 As shown, this application provides a cover assembly. An embodiment of the cover assembly includes: an inner cover 10, a sealing ring 20, a pressure ring 30, a metal connector 40, and a fastener 50. The sealing ring 20 includes a sealing body 21 and a mounting portion 22 disposed above the sealing body 21; the pressure ring 30 is disposed below the inner cover 10, and the mounting portion 22 is sandwiched between the inner cover 10 and the pressure ring 30; the metal connector 40 is embedded and connected within the pressure ring 30; the fastener 50 passes through the inner cover 10 and the metal connector 40 to fix the sealing ring 20 and the pressure ring 30 to the inner cover 10.

[0038] By employing the technical solution of this embodiment, the sealing ring 20 and the pressure ring 30 are fixed to the inner cover 10 by embedding a metal connector 40 inside the pressure ring 30 and connecting the fastener 50 to the metal connector 40. Since the coefficient of thermal expansion of the metal connector 40 is much smaller than that of the pressure ring 30, its deformation after heating and cooling is small. Furthermore, due to the high structural strength of the metal connector 40, it is not prone to deformation or damage after prolonged use, thus ensuring the firmness of the connection between the fastener 50 and the metal connector 40. In addition, because the metal connector 40 is embedded and connected inside the pressure ring 30, even if the pressure ring 30 deforms, it will be pressed tightly under the inner cover 10 by the metal connector 40 and the fastener 50. This allows the mounting portion 22 of the sealing ring 20 to be clamped between the pressure ring 30 and the inner cover 10, preventing air leakage at the mounting portion 22 and ensuring a sealing effect. Therefore, the technical solution of this embodiment can effectively solve the problem in related technologies where fasteners are prone to loosening relative to the pressure ring, thus affecting the sealing effect.

[0039] It should be noted that, in describing the embodiments of this application, the terms "upper" and "lower" both refer to the state in which the pot body assembly 60 is placed on the placement platform and the cover assembly is placed on top of the pot body assembly 60 (i.e., Figure 9 The states shown in the image are "up" and "down".

[0040] like Figure 1 , Figure 7 and Figure 10 As shown, the inner cover 10 is made of metal and includes a main body 13 and a connecting part 14 disposed on the outside of the main body 13. The connecting part 14 is provided with a mounting groove with a lower opening. The mounting part 22 of the sealing ring 20 and the pressure ring 30 both extend into the mounting groove.

[0041] like Figure 7 and Figure 8 As shown, in order to increase the strength of the inner cover 10 and reduce the deformation of the inner cover 10 under high temperature and high pressure, the main body 13 has an annular concave-convex structure.

[0042] In this embodiment, the pressure ring 30 and the metal connector 40 are formed using an insert molding process. By embedding the metal connector 40 into the pressure ring 30 using the insert molding process, the connection between the two can be ensured to be firm, and the metal connector 40 is not easy to loosen relative to the pressure ring 30.

[0043] Specifically, when forming the pressure ring 30, the metal connector 40 is first installed in a specific position of the mold, and then molten material is injected into the mold. After the molten material solidifies, the pressure ring 30 is formed.

[0044] like Figure 1 and Figure 2 As shown, the metal connector 40 is a nut structure, and the fastener 50 is threadedly engaged with the nut structure. The fastener 50 has an external thread on its outer surface, and the metal connector 40 has an internal thread. By setting the metal connector 40 as a nut structure and threading it with the fastener 50, the sealing ring 20 is fixed, which has the advantages of simple structure and reliable connection.

[0045] Specifically, fastener 50 is a screw.

[0046] like Figure 3 , Figure 4 and Figure 10 As shown, the pressure ring 30 has a mounting position 33, and the metal connector 40 is disposed at the mounting position 33. The pressure ring 30 is provided with an upward-opening mounting groove 34, and the mounting portion 22 of the sealing ring 20 has a downward-extending flange structure that extends into the mounting groove 34.

[0047] like Figure 9 and Figure 10As shown, the mounting position 33 is located outside the mounting groove 34, that is, the metal connector 40 is located outside the mounting part 22, which can avoid damaging the sealing ring 20.

[0048] like Figure 5 As shown, a recessed portion 41 is provided on the outer surface of the metal connector 40, and the recessed portion 41 is spaced apart from the bottom surface of the metal connector 40. During the molding of the pressure ring 30, the molten material can flow into the recessed portion 41. After the molten material solidifies, it stops and cooperates with the lower surface of the recessed portion 41 to prevent the metal connector 40 from detaching upward from the pressure ring 30, thereby ensuring the reliability of the connection between the metal connector 40 and the pressure ring 30.

[0049] Specifically, such as Figure 4 As shown, in this embodiment, the recess 41 is provided at the middle of the metal connector 40 along the height direction. In an embodiment not shown in the figure, the recess may also extend to the top surface of the metal connector, as long as there is a gap between the recess and the bottom surface of the metal connector.

[0050] like Figure 5 As shown, a stop tooth 42 is provided on the outer surface of the metal connector 40, and the stop tooth 42 extends along the height direction of the metal connector 40. The stop tooth 42 can restrict the metal connector 40 from moving or rotating in the lateral direction relative to the pressure ring 30, thereby ensuring the reliability of the connection between the metal connector 40 and the pressure ring 30.

[0051] like Figure 5 As shown, in this embodiment, the metal connector 40 includes two large-diameter sections and a small-diameter section located between the two large-diameter sections. Stop teeth 42 are provided on the outer surfaces of the two large-diameter sections, and the concave portion 41 is formed on the outer side of the small-diameter section.

[0052] like Figure 3 and Figure 4 As shown, a first reinforcing rib 31 is provided on the pressure ring 30, and the first reinforcing rib 31 extends along the circumferential direction of the pressure ring 30. The first reinforcing rib 31 can increase the structural strength of the pressure ring 30, making the pressure ring 30 less prone to deformation or damage after long-term use.

[0053] Specifically, the first reinforcing rib 31 is an annular rib, and multiple first reinforcing ribs 31 are provided on the pressure ring 30, arranged along the radial direction of the pressure ring 30. For example... Figure 3 and Figure 4 As shown, in this embodiment, the number of first reinforcing ribs 31 is three.

[0054] like Figure 3 and Figure 4As shown, the pressure ring 30 is also provided with a second reinforcing rib 32, which intersects with the first reinforcing rib 31. The intersecting arrangement of the first reinforcing rib 31 and the second reinforcing rib 32 provides better structural reinforcement for the pressure ring 30.

[0055] Specifically, in this embodiment, there are multiple second reinforcing ribs 32, which are arranged along the circumferential direction of the pressure ring 30, and each second reinforcing rib 32 extends along the radial direction of the pressure ring 30.

[0056] It should be noted that the "multiple" mentioned above refers to two or more.

[0057] Since the pressure ring 30 is a plastic part molded by injection molding, the weld lines on it have relatively slow flow of injection particles, resulting in lower structural strength at the weld lines. This makes it prone to deformation under high temperature and pressure, making it difficult for the pressure ring 30 to tightly compress the sealing ring 20. It should be noted that because the pressure ring 30 has a ring structure, during its molding, after the molten material is injected into the mold, it flows along the annular gap in the mold to both sides of the injection point. The aforementioned weld line is the intersection of two streams of molten material, located on the opposite side of the injection point.

[0058] like Figure 1 and Figure 2 As shown, there are multiple metal connectors 40, and the metal connectors 40 are provided at the welding positions of the pressure ring 30. By providing metal connectors 40 at the welding positions of the pressure ring 30, even if the pressure ring 30 deforms at this position, the pressure ring 30 will still press the sealing ring 20 tightly under the tensile force between the metal connectors 40 and the fasteners 50 to ensure the sealing effect.

[0059] like Figure 1 As shown, in this embodiment, there are multiple metal connectors 40 and multiple fasteners 50, and the multiple metal connectors 40 and multiple fasteners 50 are arranged in a one-to-one correspondence; in an embodiment not shown in the figure, one metal connector can also cooperate with multiple fasteners, for example: one metal connector is connected to two fasteners, or one metal connector is connected to three fasteners.

[0060] like Figure 1 and Figure 2As shown, the cover assembly includes a plurality of fasteners 50 spaced apart along the circumferential direction of the pressure ring 30. The plurality of fasteners 50 includes a first fastener 51 and a plurality of second fasteners 52. The first fasteners 51 are positioned corresponding to the welding position of the pressure ring 30, and the plurality of second fasteners 52 are equally spaced along the circumferential direction of the pressure ring 30. By adding a first fastener 51 at the welding position of the pressure ring 30, even if the pressure ring 30 deforms at this position, the pressure ring 30 will still press the sealing ring 20 under the tensile force between the metal connector 40 and the fasteners 50, thus ensuring a sealing effect.

[0061] like Figure 1 , Figure 2 and Figure 7 As shown, the inner cover 10 is provided with a first connecting hole 11 for the first fastener 51 to pass through and a second connecting hole 12 for the second fastener 52 to pass through; correspondingly, the pressure ring 30 is provided with a first connecting member 43 for threaded engagement with the first fastener 51 and a second connecting member 44 for threaded engagement with the second fastener 52.

[0062] In one feasible embodiment, the cover assembly includes a plurality of fasteners 50 spaced apart along the circumferential direction of the pressure ring 30, with the spacing between adjacent fasteners 50 gradually increasing in the direction away from the welding position of the pressure ring 30. Since the structural strength of the welding position of the pressure ring 30 is relatively low, the fasteners 50 are arranged more densely there, effectively ensuring the clamping effect on the sealing ring 20. The structural strength of other positions of the pressure ring 30 is relatively high, ensuring the clamping effect on the sealing ring 20 while reducing the number of fasteners 50 and lowering the cost of the cover assembly.

[0063] It should be noted that the phrase "in the direction away from the welding position of the pressure ring 30" refers to the direction from the welding position to the injection position of the molten material in the extension direction of the pressure ring 30.

[0064] like Figure 9 and Figure 10 As shown, this application also provides a cooking appliance. An embodiment of the cooking appliance of this application includes a lid assembly, wherein the lid assembly is the aforementioned lid assembly. The aforementioned lid assembly effectively solves the problem in related technologies where fasteners easily loosen relative to the pressure ring, affecting the sealing effect. The cooking appliance having the aforementioned lid assembly also has the aforementioned advantages.

[0065] like Figure 9 As shown, the cooking appliance also includes a pot body assembly 60, and a lid assembly is detachably mounted on top of the pot body assembly 60.

[0066] In the description of this utility model, it should be understood that "multiple" means two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0067] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0068] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0069] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cap assembly, characterized by, include: Inner cover (10); The sealing ring (20) includes a sealing body (21) and a mounting portion (22) disposed above the sealing body (21); A pressure ring (30) is disposed below the inner cover (10), and the mounting part (22) is sandwiched between the inner cover (10) and the pressure ring (30); A metal connector (40) is embedded and connected within the pressure ring (30); Fasteners (50) are inserted through the inner cover (10) and the metal connector (40) to secure the sealing ring (20) and the pressure ring (30) to the inner cover (10).

2. The cover assembly of claim 1, wherein The pressure ring (30) and the metal connector (40) are formed by insert molding process.

3. The cover assembly according to claim 1, characterized in that, The outer surface of the metal connector (40) is provided with a recess (41), and the recess (41) is spaced from the bottom surface of the metal connector (40); and / or, The outer surface of the metal connector (40) is provided with a stop tooth (42), which extends along the height direction of the metal connector (40).

4. The cover assembly according to claim 1, characterized in that, The metal connector (40) is a nut structure, and the fastener (50) is threadedly engaged with the nut structure.

5. The cover assembly according to any one of claims 1 to 4, characterized in that, The pressure ring (30) is provided with a first reinforcing rib (31), which extends along the circumferential direction of the pressure ring (30).

6. The cover assembly according to claim 5, characterized in that, The pressure ring (30) is also provided with a second reinforcing rib (32), which is intersecting with the first reinforcing rib (31).

7. The cover assembly of any one of claims 1 to 4, wherein, There are multiple metal connectors (40), and the metal connectors (40) are provided at the welding positions of the pressure ring (30).

8. The cover assembly of any one of claims 1 to 4, wherein, The cover assembly includes a plurality of fasteners (50) spaced apart along the circumferential direction of the pressure ring (30). The plurality of fasteners (50) include a first fastener (51) and a plurality of second fasteners (52). The first fastener (51) is disposed corresponding to the welding position of the pressure ring (30), and the plurality of second fasteners (52) are equally spaced along the circumferential direction of the pressure ring (30).

9. The cover assembly of any one of claims 1 to 4, wherein, The cover assembly includes a plurality of fasteners (50) spaced apart along the circumferential direction of the pressure ring (30), with the spacing between each pair of adjacent fasteners (50) gradually increasing in the direction away from the welding position of the pressure ring (30).

10. A cooking appliance comprising a lid assembly, characterized in that, The cover assembly is the cover assembly according to any one of claims 1 to 9.

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