Limiting structure, cover body assembly and cooking utensil

Abstract

The utility model provides a limit structure, cover body subassembly and cooking utensil, limit structure includes: basal body plate, basal body plate has limit mouth, and clamping piece, be provided basal body plate one side, the clamping piece includes the first buckle and second buckle that are respectively located limit mouth opposite two side wall position, the first buckle and / or second buckle have / has elasticity. According to the technical scheme, the problem that in the prior art, a protection piece cannot give consideration to installation firmness and operation convenience at the same time can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of small household appliances, and in particular to a limiting structure, a cover assembly and a cooking utensil. Background Art

[0002] In the related art, pressure cooking appliances use the physical phenomenon that the boiling point of liquid increases under higher pressure to allow water to reach a higher temperature without boiling, thereby speeding up the effect of stewing food. It has the advantages of saving time and energy, and is therefore becoming more and more widely used.

[0003] In order to maintain a high pressure in the cooking cavity, the cover assembly of the pressure cooking device generally includes a sealing ring that can seal the cover assembly and the pot body. During use, since food is easily adhered to the sealing ring, the sealing ring is set to a detachable structure, so that the user can remove the sealing ring for cleaning to keep the sealing ring clean, which greatly improves the user experience.

[0004] However, the general method of setting the sealing ring as a detachable structure is to set a mounting hole on the inner cover and set a connecting protrusion on the sealing ring, and the connecting protrusion can be inserted into the mounting hole or taken out from the mounting hole, so that the user can disassemble and assemble the sealing ring by himself. Since the inner cover is generally made of metal material, the mounting hole is formed by stamping, and there will be burrs on the edge of the mounting hole. When the user disassembles and assembles the sealing ring, the connecting protrusion of the sealing ring will scratch the burrs, thereby affecting the subsequent use effect and overall service life of the sealing ring.

[0005] In order to solve the problem that the burrs mentioned above will affect the service life of the sealing ring, the utility model patent with publication number CN203041843U discloses that a protective piece is provided at the accommodation groove of the metal pot cover, so that when the user is disassembling and assembling the sealing ring, the protective piece can block the mutual friction between the sealing ring and the edge of the accommodation groove, thereby effectively preventing the burrs on the accommodation groove from scratching the sealing ring and extending the service life of the sealing ring. However, the protective piece proposed in the utility model needs to be connected to the metal pot cover by welding or using connectors such as screws. This connection method ensures the firmness of the connection, but the operation of installing the protective piece is relatively complicated; it also proposes a solution to connect the protective piece to the metal pot cover by interference fit. This solution is relatively simple to install the protective piece, but its connection firmness is poor. Utility Model Content

[0006] The main purpose of the utility model is to provide a limiting structure, a cover assembly and a cooking utensil to solve the problem that the protective member in the related art cannot take into account both the firmness of installation and the convenience of operation.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a limiting structure is provided, including: a base plate, the base plate has a limiting opening, a clip arranged on one side of the base plate, the clip comprising a first clip and a second clip respectively located at two side walls opposite to the limiting opening, and the first clip and / or the second clip are elastic.

[0008] By applying the technical solution of the utility model, the limiting structure is installed on the outside of the installation opening of the inner cover of the cover body assembly, and the sealing ring of the cover body assembly can cooperate with the limiting structure to install the sealing ring on the inner cover. Since the limiting structure is a separate, smaller component, it is easier to make the limiting port into a structure that will not scratch the sealing ring; the limiting structure is installed at the installation port of the inner cover through a snap-fitting member, and the snap-fitting member includes a first snap-fitting member and a second snap-fitting member respectively arranged at two side walls of the limiting port, and the first snap-fitting member and the second snap-fitting member are arranged oppositely, so that the limiting structure can be stably installed at the installation port; at least one of the first snap-fitting member and the second snap-fitting member is elastic, and when the staff installs the limiting structure at the installation port, they only need to align the first snap-fitting member and the second snap-fitting member with the side wall corresponding to the installation port and then press the limiting structure toward the installation port, and when the first snap-fitting member and the second snap-fitting member pass through the installation port, the elastic snap-fitting member will be elastically deformed toward the middle of the installation port under the extrusion of the installation port, and when the first snap-fitting member and the second snap-fitting member pass through the installation port, the elastic snap-fitting member will be reset under the action of its own elasticity, so that the first snap-fitting member and the second snap-fitting member are respectively engaged with the two side walls of the installation port, and no additional operation or other components are required during the entire installation process, which has the advantage of being easy to install. Therefore, the technical solution of the present application can effectively solve the problem that the protective member in the related art cannot take into account both installation firmness and operation convenience.

[0009] Further, when the first buckle and the second buckle are respectively located on both sides of the limiting opening in the transverse direction, the side wall of the limiting opening in the vertical direction is provided with a transitional camber; or, when the first buckle and the second buckle are respectively located on both sides of the limiting opening in the vertical direction, the side wall of the limiting opening in the transverse direction is provided with a transitional camber. By providing a transitional camber at the side wall where the first buckle and the second buckle are not provided and performing position limiting cooperation with the limiting rib of the sealing ring through the side wall where the first buckle and the second buckle are not provided, it is possible to prevent the first buckle, the second buckle and the sharp corners at the limiting opening from damaging the sealing ring.

[0010] Furthermore, when the first buckle and the second buckle are respectively located on both sides of the limiting opening in the transverse direction, the spacing of the side walls of the limiting opening in the vertical direction is smaller than the length of the first buckle or the second buckle in the vertical direction; or, when the first buckle and the second buckle are respectively located on both sides of the limiting opening in the vertical direction, the spacing of the side walls of the limiting opening in the transverse direction is smaller than the width of the first buckle or the second buckle in the transverse direction. By making the size of the first buckle or the second buckle in its own extension direction larger than the size of the limiting opening in the extension direction of the first buckle and the second buckle, it is possible to achieve the limitation through the cooperation of the first buckle and the second buckle with the installation opening and the limitation through the cooperation of the limiting opening with the limiting rib of the sealing ring, and it is possible to avoid the limiting rib from being scratched and damaged by the limiting rib when the limiting rib passes through the installation opening.

[0011] Furthermore, the first buckle includes an elastic arm connected to the base plate and a buckle portion provided on an outer side wall of an end of the elastic arm away from the base plate, and the buckle portion extends in a direction away from the limiting opening. When the limiting structure is installed, the elastic arm can be deformed in the direction of the limiting opening, so that the first buckle can smoothly penetrate from the outer side of the inner cover to the inner side of the inner cover, thereby realizing the clamping connection between the first buckle and the inner cover.

[0012] Furthermore, a transition arc surface is provided at a position of the limiting opening corresponding to the surface of the base plate; and / or the limiting structure is a plastic part or a metal part. The limiting opening is provided with transition arc surfaces at both the inner and outer surfaces corresponding to the base plate, so that the limiting opening has a smooth side wall surface to avoid damaging the sealing ring. Plastic parts can be formed by injection molding and have the advantage of being easy to process; metal parts have the advantage of high structural strength and can ensure the stability of the connection with the inner cover.

[0013] According to another aspect of the utility model, a cover assembly is provided, comprising an inner cover, a sealing ring detachably arranged on the inner cover, and a limiting structure arranged on the outer side of the inner cover, wherein the inner cover is provided with an installation opening for installing the sealing ring, the limiting structure is arranged at the installation opening, and the limiting structure is the above-mentioned limiting structure. The above-mentioned limiting structure can effectively solve the problem that the protective member in the related art cannot take into account both the installation firmness and the operation convenience, and the cover assembly with the above-mentioned limiting structure also has the above-mentioned advantages.

[0014] Furthermore, the sealing ring includes a ring body, a connecting rib arranged outside the ring body, and a limiting rib arranged at one end of the connecting rib away from the ring body, the height of the limiting rib is greater than the thickness of the connecting rib, the limiting rib is in clearance with the installation opening, and the maximum height of the limiting rib and the height of the limiting opening satisfy: 0mm≤H1-H2≤0.5mm. That is, the maximum height H1 of the limiting rib is greater than the height H2 of the limiting opening, so that the limiting rib is not easy to fall out of the limiting opening when it is in limiting cooperation with the limiting opening, thereby ensuring the stability of the limiting.

[0015] Furthermore, the sealing ring is an anti-sucking pot sealing ring, which includes a ring body, a connecting rib arranged on the outside of the ring body, and a limiting rib arranged at one end of the connecting rib away from the ring body. The height of the limiting rib is greater than the thickness of the connecting rib, and the limiting rib is matched with the installation opening. The maximum height of the limiting rib and the height of the limiting opening satisfy: -0.5mm≤H1-H2≤0mm. The limiting rib can extend to the outside of the base plate through the installation opening and the limiting opening and make the connecting rib overlap on the lower edge of the limiting opening. The maximum height H1 of the limiting rib is less than the height H2 of the limiting opening, so that the user encounters less resistance when disassembling the sealing ring, making it easier for the user to disassemble and assemble the sealing ring. And the lower end of the limiting rib can cooperate with the outer surface stopper of the base plate, so that the sealing ring is not easy to fall off during use, ensuring the stability of the limit.

[0016] Furthermore, in the direction away from the ring body, the lower surface of the connecting rib is inclined upward, the limiting rib protrudes downward from the connecting rib, and an overlapping corner portion is formed between the limiting rib and the lower surface of the connecting rib. When the sealing ring is installed on the cover assembly, the overlapping corner portion is overlapped on the lower edge of the limiting opening. Under the gravity of the ring body, the sealing ring has a tendency to move downward, and cooperates with the lower surface of the connecting rib, so that the overlapping corner portion can be stably overlapped on the lower edge of the limiting opening, ensuring the hooking force between the limiting rib and the outer surface of the base plate, thereby ensuring the stability of the limit.

[0017] Furthermore, a guiding slope is provided on the upper surface and / or the lower surface of the limiting rib so that the height of the limiting rib gradually decreases in the direction away from the ring body; and / or, the limiting structure is connected to the installation opening through a clamping piece, the area of ​​the limiting opening is smaller than the area of ​​the installation opening, and the projection of the limiting opening on the inner cover is located within the range of the installation opening. In this way, a small head is formed at the end of the limiting rib away from the ring body, which is convenient for inserting the limiting rib into the limiting opening, and facilitating the user to install the sealing ring. The area of ​​the limiting opening is smaller than the area of ​​the installation opening, so that when the user inserts the limiting rib through the installation opening to the limiting opening, the limiting rib and the installation opening gap can be matched to avoid the sealing ring from rubbing against the installation opening that may have burrs, which can effectively protect the sealing ring and thus increase the service life of the sealing ring.

[0018] According to another aspect of the present invention, a cooking utensil is provided, comprising the above-mentioned limiting structure or the above-mentioned cover assembly. The above-mentioned limiting structure and the above-mentioned cover assembly can effectively solve the problem that the protective member in the related art cannot take into account both the firmness of installation and the convenience of operation. The cooking utensil having the above-mentioned limiting structure or the above-mentioned cover assembly also has the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 A three-dimensional structural schematic diagram of an embodiment of a position limiting structure according to the utility model is shown;

[0021] Figure 2 A three-dimensional structural schematic diagram of a cover assembly according to a first embodiment of the utility model is shown;

[0022] Figure 3 Shows Figure 2 An enlarged view of the cover assembly at A;

[0023] Figure 4 Shows Figure 2 A schematic cross-sectional view of a partial structure of a cover assembly;

[0024] Figure 5 Shows Figure 4 An enlarged view of position B of the cover assembly;

[0025] Figure 6 Shows Figure 2 An enlarged view of a portion of the structure of the inner cover, the sealing ring and the limiting structure of the cover assembly;

[0026] Figure 7 Shows Figure 2 An enlarged view of a portion of the structure of the inner cover and the limiting structure of the cover assembly, wherein the limiting structure is not installed on the inner cover;

[0027] Figure 8 Shows Figure 2 An enlarged view of a portion of the structure of the inner cover and the limiting structure of the cover assembly, wherein the limiting structure is installed on the inner cover;

[0028] Fig. 9 A cross-sectional schematic diagram of a partial structure of a second embodiment of a cover assembly according to the utility model is shown.

[0029] The above drawings include the following reference numerals:

[0030] 10. Inner cover; 11. Installation opening;

[0031] 20. Sealing ring; 21. Ring body; 22. Connecting ribs; 23. Limiting ribs; 24. Overlapping corners;

[0032] 30. base plate; 31. limit opening; 32. transition arc surface;

[0033] 40. snap-fitting member; 41. first snap-fitting member; 411. elastic arm; 412. snap-fitting member; 413. guide slope; 42. second snap-fitting member;

[0034] 50. Face cover;

[0035] H1, the maximum height of the limiting rib; H2, the height of the limiting opening. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0039] like Figures 1 to 6As shown, the present application provides a limiting structure, which includes a base plate 30 and a clip 40, wherein the base plate 30 has a limiting opening 31, and the clip 40 is arranged on one side of the base plate 30, and the clip 40 includes a first clip 41 and a second clip 42 respectively located at two side walls opposite to the limiting opening 31, and the first clip 41 and / or the second clip 42 are elastic.

[0040] By applying the technical solution of this embodiment, the limiting structure is installed on the outside of the installation opening 11 of the inner cover 10 of the cover assembly, and the sealing ring 20 of the cover assembly can cooperate with the limiting structure to install the sealing ring 20 on the inner cover 10. Since the limiting structure is a separate, smaller component, it is easier to make the limiting opening 31 a structure that will not scratch the sealing ring; the limiting structure is installed at the installation opening 11 of the inner cover 10 through the clip 40, and the clip 40 includes a first clip 41 and a second clip 42 respectively arranged on two side walls of the limiting opening 31 that are opposite to each other. The first clip 41 and the second clip 42 are arranged oppositely, so that the limiting structure can be stably installed at the installation opening 11, and at least one of the first clip 41 and the second clip 42 is elastic. When the staff installs the limiting structure at the installation opening 11, they only need to tighten the first clip 41. The first and second snap buckles 41 and 42 are aligned with the side walls corresponding to the installation opening 11, and then the limiting structure is pressed toward the installation opening 11. When the first and second snap buckles 41 and 42 pass through the installation opening 11, the elastic snap buckle will be elastically deformed toward the middle of the installation opening 11 under the extrusion of the installation opening 11. After the first and second snap buckles 41 and 42 pass over the installation opening 11, the elastic snap buckle is reset under the action of its own elasticity, so that the first and second snap buckles 41 and 42 are respectively engaged with the two side walls opposite to the installation opening 11. No additional operation or other parts are required during the entire installation process, which has the advantage of easy installation. Therefore, the technical solution of this embodiment can effectively solve the problem that the protective member in the related art cannot take into account both installation firmness and operation convenience.

[0041] It should be noted that the inside and outside used in the description of this application are relative to the cover assembly. Specifically, the part close to the central axis of the cover assembly is "inside", and the part away from the central axis of the cover assembly is "outside"; the up and down used in the description of this application refer to the up and down of the cover assembly when it is covered on the pot body, wherein the part close to the ground is "down", and the part away from the ground is "up".

[0042] like Figure 1 As shown, when the first buckle 41 and the second buckle 42 are respectively located on both sides of the limiting opening 31 in the transverse direction, the side wall of the limiting opening 31 in the vertical direction (that is, Figure 1The upper side wall and the lower side wall of the middle limit opening 31 are provided with a transition arc surface 32; or, when the first buckle 41 and the second buckle 42 are respectively located on both sides of the limit opening 31 in the vertical direction, the side wall of the limit opening 31 in the horizontal direction (that is, Figure 1 The left and right side walls of the middle limit opening 31 are provided with transition arc surfaces 32. Specifically, in this embodiment, the limit opening 31 is a rectangular structure. Figure 1 When the first buckle 41 and the second buckle 42 are arranged at the left side wall and the right side wall corresponding to the middle limit opening 31, the two long sides (i.e. Figure 1 The upper side wall and the lower side wall of the middle limit opening 31 correspond to the edges thereof, and the limit ribs 23 of the sealing ring 20 are limited, and transition arc surfaces 32 are arranged on the two side walls of the limit opening 31, so as to avoid damaging the sealing ring 20; when the first buckle 41 and the second buckle 42 are arranged at the two long sides of the rectangular structure, the limit ribs 23 of the sealing ring 20 can be limited by the two short sides of the rectangular structure, and transition arc surfaces 32 are arranged on the two side walls of the limit opening 31, so as to avoid damaging the sealing ring 20.

[0043] like Figure 1 , Figure 4 and Figure 5 As shown, when the first buckle 41 and the second buckle 42 are respectively located on both sides of the limiting opening 31 in the horizontal direction, the side wall spacing of the limiting opening 31 in the vertical direction is smaller than the length of the first buckle 41 or the second buckle 42 in the vertical direction; or, when the first buckle 41 and the second buckle 42 are respectively located on both sides of the limiting opening 31 in the vertical direction, the side wall spacing of the limiting opening 31 in the horizontal direction is smaller than the width of the first buckle 41 or the second buckle 42 in the horizontal direction.

[0044] Specifically, in this embodiment, the first buckle 41 and the second buckle 42 can be used to realize the limit structure and the installation port 11. Figure 4 The front and rear (direction perpendicular to the paper), left and right, and up and down directions of the limiting structure are as follows: wherein a clamping groove is formed between the first clamping buckle 41 and the base plate 30 and between the second clamping buckle 42 and the base plate 30, and the corresponding edge of the mounting opening 11 is inserted into the clamping groove to realize the limiting structure and the mounting opening 11 in Figure 5 The first buckle 41 and the second buckle 42 are limited in the left and right directions; Figure 5 The upper and lower sides of the mounting opening 11 are respectively matched with the upper and lower side walls of the mounting opening 11 to achieve the limit structure and the mounting opening 11 in Figure 5 The first buckle 41 and the second buckle 42 are separated from each other by the side edges and the two side walls of the mounting opening 11 in the front and rear directions of the mounting opening 5 to achieve the limiting structure and the mounting opening 11 in Figure 5 Limitation in the front and rear directions.

[0045] The size of the first clip 41 or the second clip 42 in its own extension direction is made larger than the size of the limiting opening 31 in the extension direction of the first clip 41 and the second clip 42, so that the first clip 41 and the second clip 42 cooperate with the installation opening 11 for limiting, and the limiting opening 31 cooperates with the limiting rib 23 of the sealing ring 20 for limiting, which can ensure that the size of the limiting rib 23 of the sealing ring 20 in the extension direction of the first clip 41 and the second clip 42 is smaller than the size of the installation opening 11 in this direction, thereby preventing the limiting rib 23 from rubbing against the installation opening 11 when passing through the installation opening 11, so that the burrs at the installation opening 11 scratch the limiting rib 23.

[0046] It should be noted that the above-mentioned "vertical direction" is not limited to the vertical direction, and it can be the vertical direction and the direction with a certain angle (for example, 0° to 15°) to the vertical direction; the above-mentioned "lateral direction" is not limited to the horizontal direction, and it can be the horizontal direction and the direction with a certain angle (for example, 0° to 15°) to the horizontal direction.

[0047] like Figure 1 as well as Figures 6 to 8 As shown, the limiting opening 31 is a rectangular structure, and the first buckle 41 and the second buckle 42 are respectively arranged at the two short sides of the rectangular structure. Correspondingly, the mounting opening 11 and the base plate 30 are also rectangular structures. Compared with setting the mounting opening and the limiting opening as special-shaped structures, setting the mounting opening 11 and the limiting opening 31 as regular rectangles is convenient for processing the two and also convenient for users to disassemble and assemble the sealing ring. The first buckle 41 and the second buckle 42 are respectively arranged at both ends of the limiting opening 31 in the length direction, so that the long side of the base plate 30 is pressed against the inner cover 10 by the first buckle 41 and the second buckle 42 located at both ends, and the short side of the base plate 30 will not be lifted.

[0048] like Figure 1 As shown, the first buckle 41 includes an elastic arm 411 connected to the base plate 30 and a buckle portion 412 provided on the outer wall of the end of the elastic arm 411 away from the base plate 30, and the buckle portion 412 extends in a direction away from the limiting opening 31. When the limiting structure is installed, the elastic arm 411 can be deformed in the direction of the limiting opening 31, so that the first buckle 41 can smoothly penetrate from the outer side of the inner cover 10 to the inner side of the inner cover 10, thereby realizing the clamping connection between the first buckle 41 and the inner cover 10.

[0049] like Figure 1As shown, the side of the buckle portion 412 away from the base plate 30 has a guiding inclined surface 413, and in the direction away from the limiting opening 31, the guiding inclined surface 413 extends toward the base plate 30. When the limiting structure is installed in this way, the elastic arm 411 is pushed toward the limiting opening 31 to deform through the abutment between the guiding inclined surface 413 and the side wall of the installation opening 11, so that the first buckle 41 is connected to the inner cover 10 by a clamping connection.

[0050] like Figure 1 As shown, the second buckle 42 has the same structure as the first buckle 41 and is symmetrically arranged with the first buckle 41 .

[0051] like Figure 1 and Figure 5 As shown, the limiting opening 31 is provided with a transition arc surface 32 at a position corresponding to the surface of the base plate 30. Specifically, the base plate 30 has an inner surface close to the inner cover 10 and an outer surface away from the inner cover 10, and the limiting opening 31 is provided with transition arc surfaces 32 at positions corresponding to the inner and outer surfaces of the base plate 30, so that the limiting opening 31 has a smooth side wall surface to avoid damaging the sealing ring 20. That is, the limiting opening 31 is provided with an R angle of the inner and outer circumferences, so that the sealing ring 20 will not be cut when disassembling and assembling, thereby extending the service life of the sealing ring 20.

[0052] In this embodiment, the limiting structure is a plastic part or a metal part. Plastic parts (such as plastic parts, silicone parts, etc.) can be formed by injection molding, which has the advantage of being easy to process. Preferably, the limiting structure is a plastic part, the material of the plastic part is relatively hard and the friction between the plastic part and the sealing ring 20 is relatively small, so it is not easy to fall off from the inner cover 10, and the user encounters less resistance when disassembling the sealing ring 20, which is convenient for the user to disassemble and assemble the sealing ring 20.

[0053] Metal parts have the advantage of high structural strength. Specifically, when processing metal limiting structures, a limiting opening can be punched out on a metal plate first, and a transition arc surface can be processed on the side wall of the limiting opening through an extrusion molding process. Then, part of the metal plate can be bent to form an elastic arm, and finally a snap-on portion can be punched out at the free end of the elastic arm.

[0054] like Figure 1 As shown, in the present embodiment, the surface of the base plate 30 facing the inner cover 10 and the surface of the snap portion 412 facing the base plate 30 are spaced apart and form a snap groove, and the side wall of the inner cover 10 can be inserted into the snap groove to realize the installation of the limiting structure at the installation port 11; the base plate 30 is hollowed out at the position corresponding to the snap portion 412, so as to facilitate the integral molding of the base plate 30 and the snap-connector 40 by injection molding.

[0055] like Figures 2 to 8As shown, the present application also provides a cover assembly. Embodiment 1 of the cover assembly of the present application includes an inner cover 10, a sealing ring 20 detachably arranged on the inner cover 10, and a limiting structure arranged on the outer side of the inner cover 10. The inner cover 10 is provided with an installation opening 11 for installing the sealing ring 20. The limiting structure is arranged at the installation opening 11. The limiting structure is the above-mentioned limiting structure. The above-mentioned limiting structure can effectively solve the problem that the protective member in the related art cannot take into account both the firmness of installation and the convenience of operation. The cover assembly with the above-mentioned limiting structure also has the above-mentioned advantages.

[0056] like Figures 1 to 6 As shown, the limiting structure is connected to the installation opening 11 through the clamping member 40, the area of ​​the limiting opening 31 is smaller than the area of ​​the installation opening 11, and the projection of the limiting opening 31 on the inner cover 10 is located within the range of the installation opening 11. Preferably, the limiting opening 31 is one circle smaller than the installation opening 11, so that when the user inserts the limiting rib 23 through the installation opening 11 to the limiting opening 31, the limiting rib 23 and the installation opening 11 can be matched with each other to avoid the sealing ring 20 from rubbing against the installation opening 11 that may have burrs, which can effectively protect the sealing ring and thus increase the service life of the sealing ring. Specifically, in this embodiment, the height of the limiting opening 31 is 0.5mm to 1mm smaller than the height of the installation opening 11.

[0057] Specifically, in this embodiment, the inner cover 10 is a hardware component, and the sealing ring 20 is made of silicone.

[0058] like Figures 2 to 4 As shown, the cover assembly further includes a cover 50 disposed outside the inner cover 10, and the limiting structure is located between the inner cover 10 and the cover 50. The sealing ring 20 includes a plurality of connecting ribs 22 and a plurality of limiting ribs 23 spaced apart on the outer periphery of the ring body 21, and the plurality of limiting ribs 23 are connected to the outer ends of the plurality of connecting ribs 22 in a one-to-one correspondence. The sealing ring 20 in this embodiment is a vertically symmetrical structure, which prevents the user from installing the sealing ring 20 upside down when assembling it by himself, simplifies the user's operation, and improves the user's experience.

[0059] like Figure 4 and Figure 5As shown, the sealing ring 20 includes a ring body 21, a connecting rib 22 arranged outside the ring body 21, and a limiting rib 23 arranged at one end of the connecting rib 22 away from the ring body 21, the height of the limiting rib 23 is greater than the thickness of the connecting rib 22, the limiting rib 23 is in clearance with the installation opening 11, and the maximum height H1 of the limiting rib 23 and the height H2 of the limiting opening 31 satisfy: 0mm≤H1-H2≤0.5mm. That is, the maximum height H1 of the limiting rib 23 is greater than the height H2 of the limiting opening 31, so that the limiting rib 23 is not easy to escape from the limiting opening 31 when it is in limiting cooperation with the limiting opening 31, thereby ensuring the stability of the limiting. In this embodiment, after the limiting rib 23 passes through the limiting opening 31, the connection position of the limiting rib 23 and the connecting rib 22 overlaps the lower edge of the limiting opening 31, so that the limiting rib 23 is not easy to escape from the limiting opening 31. Preferably, the difference between H1 and H2 may be 0.1 mm, 0.3 mm or 0.5 mm.

[0060] like Figure 4 and Figure 5 As shown, the upper and lower surfaces of the limiting rib 23 are provided with guiding inclined surfaces so that the height of the limiting rib 23 gradually decreases in the direction away from the ring body 21. In this way, a small head is formed at one end of the limiting rib 23 away from the ring body 21 (so that the cross section of the limiting rib 23 forms a triangular shape), which facilitates the insertion of the limiting rib 23 into the limiting opening 31 and facilitates the user to install the sealing ring 20.

[0061] Of course, in an embodiment not shown in the figure, only the upper surface of the limiting rib or the lower surface of the limiting rib may have a guiding slope, as long as a small head is formed at the end of the limiting rib away from the ring body.

[0062] Of course, in an embodiment not shown in the figure, the base plate can also be set to be thicker, so that the depth of the limit opening is larger. After the limit rib passes through the installation opening, it has an interference fit with the upper and lower edges of the limit opening, which can also prevent the limit rib from falling off.

[0063] It should be noted that, in this embodiment, the cross-sectional area of ​​the limiting rib 23 cut by the vertical surface is smaller than the area of ​​the mounting opening 11, and the above-mentioned "clearance fit between the limiting rib 23 and the mounting opening 11" means that during the installation of the sealing ring 20, the upper and lower surfaces and the left and right surfaces of the limiting rib 23 will not contact the wall of the mounting opening 11.

[0064] Fig. 9 A cross-sectional schematic diagram of a partial structure of a second embodiment of the cover assembly of the present application is shown. The following mainly describes the parts of the second embodiment that are different from the first embodiment, and the same parts of the two embodiments are not repeated.

[0065] like Fig. 9As shown, the sealing ring 20 is an anti-sucking pot sealing ring, and the sealing ring 20 includes a ring body 21, a connecting rib 22 arranged outside the ring body 21, and a limiting rib 23 arranged at one end of the connecting rib 22 away from the ring body 21. The height of the limiting rib 23 is greater than the thickness of the connecting rib 22. The limiting rib 23 and the installation opening 11 are in clearance fit. The maximum height H1 of the limiting rib 23 and the height H2 of the limiting opening 31 satisfy: -0.5mm≤H1-H2≤0mm. The limiting rib 23 can extend to the outside of the base plate 30 through the installation opening 11 and the limiting opening 31 and make the connecting rib 22 overlap on the lower edge of the limiting opening 31. In this embodiment, the maximum height H1 of the limiting rib 23 is less than the height H2 of the limiting opening 31, so that the user encounters less resistance when disassembling the sealing ring 20, making it easier for the user to disassemble and assemble the sealing ring 20. When the user installs the sealing ring 20, the limiting rib 23 can extend to the outside of the base plate 30 through the installation opening 11 and the limiting opening 31 and make the connecting rib 22 overlap the lower edge of the limiting opening 31, so that the lower end of the limiting rib 23 can cooperate with the outer surface stopper of the base plate 30, so that the limiting rib 23 is not easy to be separated from the limiting opening 31 inward, so that the sealing ring 20 is not easy to fall off during use, and the stability of the limit is ensured. Preferably, the difference between H2 and H1 can be 0.1mm, 0.3mm or 0.5mm.

[0066] Specifically, the above-mentioned anti-pot suction sealing ring refers to a sealing ring whose adsorption force with the pot mouth is sufficiently small when the lid is opened and which is not prone to pot suction, such as the sealing rings disclosed in Chinese patents CN201220212644.3, CN202122306869.7, CN202220681735.5, CN202122595780.7 or CN201320278199.5.

[0067] like Figure 4 and Figure 5 As shown, in the direction away from the ring body 21, the lower surface of the connecting rib 22 is inclined upward, the limiting rib 23 protrudes downward from the connecting rib 22, and a lap corner portion 24 is formed between the limiting rib 23 and the lower surface of the connecting rib 22. When the sealing ring 20 is installed on the cover assembly, the lap corner portion 24 is lapped on the lower edge of the limiting opening 31. In this way, after the user installs the sealing ring 20 on the cover assembly, under the gravity of the ring body 21, the sealing ring 20 will tend to move downward, and cooperate with the lower surface of the connecting rib 22, so that the lap corner portion 24 can be stably lapped on the lower edge of the limiting opening 31, ensuring the hooking force between the limiting rib 23 and the outer surface of the base plate 30, so that the sealing ring 20 is not easy to fall off during use, ensuring the stability of the limit.

[0068] The present application also provides a cooking utensil, comprising the above-mentioned limiting structure or the above-mentioned cover assembly. The above-mentioned limiting structure and the above-mentioned cover assembly can effectively solve the problem that the protective member in the related art cannot take into account both the firmness of installation and the convenience of operation. The cooking utensil having the above-mentioned limiting structure or the above-mentioned cover assembly also has the above-mentioned advantages.

[0069] In the present embodiment, the cooking utensil is a pressure cooking utensil. Of course, in embodiments not shown in the figure, the cooking utensil can also be products such as an electric rice cooker, a low-pressure rice cooker, a soybean milk machine, a food processor, a cooking machine, an electric stew pot, a multi-function pot, etc.

[0070] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0071] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0072] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0073] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A limiting structure, characterized in that: include: A base plate (30), wherein the base plate (30) has a limiting opening (31), A clamping member (40) is arranged on one side of the base plate (30), and the clamping member (40) comprises a first clamp (41) and a second clamp (42) respectively located at two side walls of the limiting opening (31) that are arranged opposite to each other, and the first clamp (41) and / or the second clamp (42) are elastic.

2. The limiting structure according to claim 1, characterized in that: When the first clip (41) and the second clip (42) are respectively located on both sides of the limiting opening (31) in the transverse direction, a transition arc surface (32) is provided on the side wall of the limiting opening (31) in the vertical direction; or when the first clip (41) and the second clip (42) are respectively located on both sides of the limiting opening (31) in the vertical direction, a transition arc surface (32) is provided on the side wall of the limiting opening (31) in the transverse direction.

3. The limiting structure according to claim 1, characterized in that: When the first buckle (41) and the second buckle (42) are respectively located on both sides of the limiting opening (31) in the transverse direction, the spacing between the side walls of the limiting opening (31) in the vertical direction is smaller than the length of the first buckle (41) or the second buckle (42) in the vertical direction; or, when the first buckle (41) and the second buckle (42) are respectively located on both sides of the limiting opening (31) in the vertical direction, the spacing between the side walls of the limiting opening (31) in the transverse direction is smaller than the width of the first buckle (41) or the second buckle (42) in the transverse direction.

4. The limiting structure according to any one of claims 1 to 3, characterized in that: The first buckle (41) comprises an elastic arm (411) connected to the base plate (30) and a buckle portion (412) arranged on an outer side wall of an end of the elastic arm (411) away from the base plate (30), and the buckle portion (412) extends in a direction away from the limiting opening (31).

5. The limiting structure according to claim 1 or 3, characterized in that: A transition cambered surface (32) is provided at a position of the limiting opening (31) corresponding to the surface of the base plate (30); and / or, The limiting structure is a plastic part or a metal part.

6. A cover assembly, characterized in that: The invention comprises an inner cover (10), a sealing ring (20) detachably arranged on the inner cover (10), and a limiting structure arranged on the outer side of the inner cover (10); the inner cover (10) is provided with a mounting opening (11) for mounting the sealing ring (20); the limiting structure is arranged at the mounting opening (11); and the limiting structure is the limiting structure described in any one of claims 1 to 5.

7. The cover assembly according to claim 6, characterized in that: The sealing ring (20) comprises a ring body (21), a connecting rib (22) arranged outside the ring body (21), and a limiting rib (23) arranged at one end of the connecting rib (22) away from the ring body (21), the height of the limiting rib (23) is greater than the thickness of the connecting rib (22), the limiting rib (23) and the installation opening (11) are clearance-matched, and the maximum height (H1) of the limiting rib (23) and the height (H2) of the limiting opening (31) satisfy the following relationship: 0mm≤H1-H2≤0.5mm.

8. The cover assembly according to claim 6, characterized in that: The sealing ring (20) is an anti-sucking pot sealing ring, comprising a ring body (21), a connecting rib (22) arranged outside the ring body (21), and a limiting rib (23) arranged at one end of the connecting rib (22) away from the ring body (21), the height of the limiting rib (23) is greater than the thickness of the connecting rib (22), the limiting rib (23) and the mounting opening (11) are clearance-matched, the maximum height (H1) of the limiting rib (23) and the height (H2) of the limiting opening (31) satisfy: -0.5mm≤H1-H2≤0mm, the limiting rib (23) can extend to the outside of the base plate (30) through the mounting opening (11) and the limiting opening (31) and enable the connecting rib (22) to overlap the lower edge of the limiting opening (31).

9. The cover assembly according to claim 8, characterized in that: In the direction away from the ring body portion (21), the lower surface of the connecting rib (22) is inclined upward, and the limiting rib (23) protrudes downward from the connecting rib (22). A lap corner portion (24) is formed between the limiting rib (23) and the lower surface of the connecting rib (22). When the sealing ring (20) is installed on the cover body assembly, the lap corner portion (24) is lapped on the lower edge of the limiting opening (31).

10. The cover assembly according to any one of claims 7 to 9, characterized in that: A guiding slope is provided on the upper surface and / or the lower surface of the limiting rib (23) so that the height of the limiting rib (23) gradually decreases in a direction away from the ring body portion (21); and / or, The limiting structure is connected to the installation opening (11) via the clamping member (40); the area of ​​the limiting opening (31) is smaller than the area of ​​the installation opening (11); and the projection of the limiting opening (31) on the inner cover (10) is within the range of the installation opening (11).

11. A cooking utensil, characterized in that: It comprises the limiting structure described in any one of claims 1 to 5 or the cover assembly described in any one of claims 6 to 10.

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