CN210121066U - Electric pressure cooker - Google Patents

Abstract

The utility model provides an electric pressure cooker, include: the cooking pot comprises a pot body and a middle plate arranged at the upper part of the pot body, wherein a cooking cavity is arranged in the pot body; the handle comprises a first handle and a second handle, the first handle and the outer side wall of the cooker body are integrally formed, and the second handle is arranged on the first handle. Use the technical scheme of the utility model the problem that the handle assembly efficiency is low of the electric pressure cooker among the prior art can be solved effectively.

Description

Electric pressure cooker

Technical Field

The utility model relates to a on the small household electrical appliances field, particularly, relate to an electric pressure cooker.

Background

At present, the handles of the electric pressure cooker in the market generally comprise a first handle and a second handle, wherein the first handle is fixed on the cooker body through screws or other fixing forms, and the second handle is buckled on the first handle. The structure makes the assembly steps of the handle complicated and the assembly efficiency low.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide an electric pressure cooker to solve the problem of low assembly efficiency of the handle of the electric pressure cooker in the prior art.

In order to achieve the above object, the utility model provides an electric pressure cooker, include: the cooking pot comprises a pot body and a middle plate arranged at the upper part of the pot body, wherein a cooking cavity is arranged in the pot body; the handle comprises a first handle and a second handle, the first handle and the outer side wall of the cooker body are integrally formed, and the second handle is arranged on the first handle.

Use the technical scheme of the utility model, the first in command sets up with a kind of deep pot body's lateral wall integrated into one piece, and the second in command is installed on the first in command. When an assembler assembles the handle, the second handle is only required to be arranged on the first handle, and the first handle does not need to be arranged, so that the assembly steps are simplified, and the assembly efficiency is improved.

Optionally, the inner side of the handle is provided with a handle cavity, and the inner side edge of the handle is provided with a round angle. The structure can prevent the fingers of the user from being cut, thereby improving the use experience of the user.

Optionally, the first handle is a hollow casing, the first handle has an opening, the second handle is a cover plate, the cover plate includes a cover plate body covering the opening and an extension structure located inside the first handle and extending in a direction away from the cover plate body, a cavity between the extension structure and the cooker body forms a handle cavity, the first handle has a portion opposite to the opening in the up-down direction and has an inner side edge, the extension structure is provided with a fillet at a position corresponding to the inner side edge of the first handle at least, the fillet is located on a surface of the extension structure away from the first handle in the inside-out direction, and the bottom of the fillet protrudes from or is flush with the lower surface of the first handle. The structure can avoid the cutting phenomenon of the user and improve the use experience of the user.

Optionally, the extension structure comprises a vertical plate extending vertically downwards, a round corner is arranged at the lower edge of the vertical plate, and the distance L1 between the bottom of the round corner and the lower surface of the first handle is 0.2-0.5 mm. The structure can improve the hand feeling of a user during grasping and improve the use experience of the user.

Optionally, the extending structure includes a vertical plate extending vertically downward, a rounded corner is disposed at a lower edge of the vertical plate, and a distance L2 between an outer surface of the extending structure and an inner surface of the first handle is less than or equal to 0.5 mm. The structure can improve the hand feeling of a user during grasping and improve the use experience of the user.

Optionally, the second handle further comprises a reinforcing structure provided to the flap body and connected to the extension structure. The structure can reduce the deformation of the extension structure inclining towards the inner side, and ensure that the distance between the outer surface of the extension structure and the inner surface of the first handle is within a preset range, thereby further improving the use experience of users.

Optionally, the reinforcing structure includes a reinforcing rib provided on the lower surface of the cover plate body and extending downward, and a connecting rib connected between the extending structure and the reinforcing rib. The structure is simple and easy to process.

Optionally, the first in command includes the diapire and sets up respectively in the inside wall and the lateral wall of diapire both sides, and the oral area that the last border of inside wall and lateral wall encloses forms the opening, and at least part inside wall stretches into between extension structure and the strengthening rib, and the last border department of inside wall is provided with dodges the mouth of dodging of splice bar. Above-mentioned structure can make full use of the inside idle space of handle, reduces the holistic thickness of handle, does benefit to the miniaturized design of handle.

Optionally, the first handle and the second handle are connected in a clamping manner through a clamping structure. The structure is simple, assembly is convenient, and assembly efficiency is improved.

Optionally, the inner side of the handle is provided with a handle cavity, the first handle is a hollow shell, the upper portion of the first handle is provided with an opening, the second handle is a cover plate, the cover plate comprises a cover plate body covering the opening and an extension structure located on the inner side of the first handle and extending downwards, the cavity between the extension structure and the cooker body forms the handle cavity, the first handle is provided with an inner side edge located at the lower portion, the extension structure is at least provided with a round corner at a position corresponding to the inner side edge of the first handle, the round corner is located on the surface of the extension structure far away from the first handle in the inner and outer directions, the bottom of the round corner protrudes from or is flush with the lower surface of the first handle, the extension structure comprises a vertical plate extending downwards, the round corner is arranged at the lower edge of the vertical plate, the distance L1 between the bottom of the round corner and the lower surface of the first handle is 0.2-0.5 mm, and the distance L2 between the, the second handle is still including setting up in the cover plate body and the additional strengthening of being connected with extending structure, additional strengthening is including setting up in the lower surface of cover plate body and downwardly extending's strengthening rib, and connect the splice bar between extending structure and strengthening rib, the first in command includes the diapire and sets up respectively in the inside wall and the lateral wall of diapire both sides, the oral area that the last border of inside wall and the last border of lateral wall enclosed forms the opening, at least part inside wall stretches into between extending structure and the strengthening rib, the last border department of inside wall is provided with dodges the mouth of dodging of splice bar, the first in command passes through the joint structure joint with the second handle and is connected.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic perspective view of an embodiment of an electric pressure cooker according to the present invention;

FIG. 2 is an exploded view of a portion of the cooking appliance of FIG. 1;

fig. 3 shows a perspective view of a pot body of the cooking appliance of fig. 1;

FIG. 4 shows an enlarged schematic structure at A of the pot body of FIG. 3;

FIG. 5 shows a cross-sectional schematic view of the pot body of FIG. 3;

FIG. 6 shows an enlarged schematic structural view at B of the pot body of FIG. 5; and

FIG. 7 shows an enlarged schematic structure at C of the pot body of FIG. 6;

FIG. 8 shows a perspective view of an angle of a second handle of the electric pressure cooker of FIG. 1;

FIG. 9 shows a perspective view of another angle of the second handle of FIG. 8; and

fig. 10 shows a partial schematic structure of another embodiment of the electric pressure cooker according to the present invention.

Wherein the figures include the following reference numerals:

1. a buckle cavity; 10. a first handle; 11. a bottom wall; 12. an inner sidewall; 121. avoiding the mouth; 13. an outer sidewall; 14. an inner edge; 20. a cover sheet; 21. a cover plate body; 22. an extension structure; 221. round corners; 23. a reinforcing structure; 231. reinforcing ribs; 232. connecting ribs; 24. decorating edges; 30. a clamping structure; 31. a first hook; 32. a second hook; 33. a first bayonet; 34. a second bayonet; 40. a pot body; 50. a handle; 60. a middle plate; 70. a transverse plate.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The inside and outside of the pot body described below are shown in fig. 3, and the inside and outside of the handle are shown in fig. 9. As shown in fig. 1 to 3, 5 and 6, the electric pressure cooker of the present embodiment includes: a pot body 40, a middle plate 60 and a handle 50. Wherein, the middle plate 60 is arranged at the upper part of the cooker body 40, and a cooking cavity is arranged in the cooker body 40; the handle 50 includes a first handle 10 and a second handle, the first handle 10 is integrally formed with an outer sidewall of the pot body 40, and the second handle is connected to the first handle 10.

By applying the technical scheme of the embodiment, the first handle 10 and the outer side wall of the cooker body 40 are integrally formed, and the second handle is installed on the first handle 10. When an assembler assembles the handle, the assembler only needs to install the second handle on the first handle 10 without installing the first handle 10, thereby simplifying the assembly steps and improving the assembly efficiency.

In addition, in the present embodiment, the first handle 10 is integrally formed with the outer side wall of the pot body 40, and since the height of the pot body 40 is high, the arrangement position (height) of the handle 50 is various, and the design can be made according to the actual product requirement.

It should be noted that, in this embodiment, the cooker body 40 includes an outer shell, a heat preservation cover and an inner pot which are sequentially arranged from outside to inside, and the inner pot has a cooking cavity therein. The housing is made of a plastic material and the first handle 10 is injection molded together with the housing, which is simple in structure and easy to process.

As shown in fig. 4 to 7, in the present embodiment, the inside of the handle 50 has the buckle cavity 1, and the inside edge of the handle 50 is provided with a rounded corner 221. The structure enables the user not to be cut by the sharp edge of the handle when the user grips the handle, thereby improving the use experience of the user.

It should be noted that the positions of the first handle and the second handle can be arranged up and down, left and right, or front and back, but no matter what the form of the first handle and the second handle is, the inner side edge 14 of the handle formed by assembling the first handle and the second handle is provided with a round corner 221 to avoid cutting the fingers of the user. It should be further noted that the inner side edge 14 may be an inner side upper edge of the handle, and may also be an inner side lower edge of the handle.

As shown in fig. 1 to 3, 5 and 6, in the present embodiment, the first handle 10 is a hollow case, the first handle 10 has an opening, and the second handle is a cover 20. The structure enables the inside of the handle 50 to be of a hollow structure, and production cost can be effectively reduced. In addition, in this embodiment, the cooker body 40 includes a shell, a heat preservation cover and an inner pot which are sequentially arranged from outside to inside, and the inner pot has a cooking cavity therein. The housing is made of a plastic material and the first handle 10 is injection molded together with the housing, which is simple in structure and easy to process.

After long-term research, the inventor finds that the handle is a part directly contacted with the hand of the user, but the part of the first handle 10 contacted with the hand of the user cannot be rounded due to the mold stripping of the cooker body of the electric pressure cooker or other reasons, so that the hand feeling of the handle is poor, and even the hand of the user can be cut. In order to solve the above problem, as shown in fig. 4 to 7, in the present embodiment, the cover plate 20 includes a cover plate body 21 covering the opening and an extending structure 22 located inside the first handle 10 and extending in a direction away from the cover plate body 21, a cavity between the extending structure 22 and the cooker body 40 forms a handle cavity 1, the first handle 10 has an inner side edge 14 at a portion opposite to the opening in the up-down direction, the extending structure 22 is provided with a round corner 221 at least at a position corresponding to the inner side edge 14 of the first handle 10, the round corner 221 is located on a surface of the extending structure 22 away from the first handle 10 in the inward-outward direction, and a bottom of the round corner 221 protrudes or is flush with a lower surface of the first handle 10.

By adopting the technical scheme of the embodiment, when the user grips the handle 50, the hand of the user is in contact with the fillet 221 on the extension structure 22 at the inner side of the first handle 10, so that the hand of the user is prevented from touching the sharper inner side edge 14 of the first handle 10, the hand feeling of the user during gripping can be improved, the cutting phenomenon is prevented from occurring, and the use experience of the user is improved.

It should be noted that if the opening is located at the upper portion of the first handle 10, the inner edge of the bottom wall of the first handle 10 forms the inner side edge 14. If the opening is located in the lower portion of the primary handle 10, the inner edge of the top wall of the primary handle forms the inner edge described above.

In this embodiment, the opening is located at the upper part of the first handle 10, the cover sheet body 21 covers the opening at the upper part of the first handle 10, and the round corner 221 is arranged at the lower edge of the inner side of the handle. Of course, in other embodiments not shown in the figures, the opening may be provided at the lower part of the first handle, the cover sheet comprises a cover sheet body covering the opening at the lower part and an extending structure located at the inner side of the first handle and extending upwards, the cavity between the extending structure and the cooker body forms a handle cavity, and the extending structure is provided with a round angle at a position corresponding to the upper edge of the inner side of the first handle 10.

As shown in fig. 5 to 7, in the present embodiment, the extension structure 22 includes a vertical plate extending vertically downward, a fillet 221 is disposed at a lower edge of the vertical plate, and a distance L1 between a bottom of the fillet 221 and a lower surface of the first handle 10 is between 0.2mm and 0.5 mm. If L1 is less than 0.2mm, the user's fingers may also hit the inside edge 14 of the first handle 10, resulting in a poor user experience. If L1 is greater than 0.5mm, the lower end of the extension structure 22 protrudes too much from the lower surface of the first handle 10, which causes the user to have a hand hurting phenomenon when gripping the handle, and also affects the user experience. Of course, as shown in fig. 10, in other embodiments, the extension structure 22 may further include a transverse plate 70 extending outward, and a rounded corner 221 is provided at the connection between the transverse plate 70 and the vertical plate to prevent the hand of the user from being cut.

If the extension 22 is spaced further from the first handle 10 (i.e. the gap between the extension 22 and the inner surface of the first handle 10 is larger), the user's fingers may still protrude into the gap and contact the sharper inside edge 14 of the lower surface of the first handle 10, even if the lower portion of the extension 22 protrudes above the lower surface of the first handle 10. To avoid this, as shown in fig. 6 and 7, in the present embodiment, the rounded corner 221 is disposed at the lower edge of the vertical plate, and the distance L2 between the outer surface of the extension structure 22 and the inner surface of the first handle 10 is less than or equal to 0.5 mm.

As shown in fig. 6, 8 and 9, in the present embodiment, the second handle further includes a reinforcing structure 23 provided to the flap body 21 and connected to the extension structure 22. This configuration reduces the amount of deformation of the extension structure 22 that is inwardly angled, and once this amount of deformation is greater, the distance L2 between the extension structure 22 and the interior surface of the first handle 10 is increased, resulting in the possibility of the user gripping the handle and still contacting the inside edge 14 of the sharpened first handle 10. Therefore, the reinforcing structure 23 connected with the extension structure 22 is arranged on the cover sheet body 21, so that a tensile force can be applied to the extension structure 22, and the distance L2 between the outer surface of the extension structure 22 and the inner surface of the first handle 10 is ensured to be less than or equal to 0.5mm, thereby further improving the use experience of users.

As shown in fig. 6, 8 and 9, in the present embodiment, the reinforcing structure 23 includes a reinforcing rib 231 provided on the lower surface of the cover sheet body 21 and extending downward, and a connecting rib 232 connected between the extending structure 22 and the reinforcing rib 231. The reinforcing ribs 231 are arranged along the circumferential outer side of the extension structure 22. The structure is simple and easy to process. Preferably, in the present embodiment, the connecting rib 232 is two spaced apart from each other. The above structure makes the tension of the reinforcing structure 23 on all parts of the extending structure 22 more uniform, and further makes the gap between the outer surface of the extending structure 22 and the inner surface of the first handle 10 more uniform.

As shown in fig. 4 to 9, in the present embodiment, the first handle 10 includes a bottom wall 11, and an inner side wall 12 and an outer side wall 13 respectively disposed on two sides of the bottom wall 11, wherein a mouth portion enclosed by an upper edge of the inner side wall 12 and an upper edge of the outer side wall 13 forms an opening, at least a portion of the inner side wall 12 extends between the extension structure 22 and the reinforcing rib 231, and an avoiding opening 121 for avoiding the connecting rib 232 is disposed at the upper edge of the inner side wall 12. Above-mentioned structure can make full use of the inside idle space of handle, reduces the holistic thickness of handle, does benefit to the miniaturized design of handle. It should be noted that, in the present embodiment, the lower surface of the first handle 10 refers to the lower surface of the bottom wall 11.

As shown in fig. 4, 6 to 9, in the present embodiment, the first handle 10 and the second handle are connected by a snap structure 30. The structure is simple, assembly is convenient, and assembly efficiency is improved.

As shown in fig. 4 to 9, in this embodiment, the first handle 10 includes a bottom wall 11, and an inner side wall 12 and an outer side wall 13 respectively disposed on two sides of the bottom wall 11, a mouth portion surrounded by an upper edge of the inner side wall 12 and an upper edge of the outer side wall 13 forms an opening, a cavity between the inner side wall 12 and the cooker body 40 forms the handle cavity 1, the second handle further includes a decorative edge 24 extending downward, the extending structure 22 and the decorative edge 24 are respectively disposed on two inner sides and an outer side of the cover plate body 21, the locking structure 30 includes a first hook 31 and a first bayonet 33 capable of being locked with each other, one of the first hook 31 and the first bayonet 33 is disposed on the outer side wall 13, and the other of the first hook 31 and the first bayonet 33 is disposed on an inner wall of the decorative edge 24. The above structure makes it difficult for external water to enter the inside of the handle through the seam between the cover sheet 20 and the first handle 10, and makes the cover sheet 20 firmly attached to the first handle 10.

In order to ensure that the cover sheet 20 can be firmly mounted on the first handle 10 at all positions, as shown in fig. 4, 8 and 9, in this embodiment, the fastening structure 30 further includes a second fastening hook 32 and a second fastening opening 34 that can be fastened to each other, one of the second fastening hook 32 and the second fastening opening 34 is disposed on the cover sheet body 21, and the other of the second fastening hook 32 and the second fastening opening 34 is disposed on the bottom wall 11. The above structure can further allow the cover flap 20 to be securely attached to the first handle 10.

As shown in fig. 1 to 9, in this embodiment, the first handle 10 is a hollow housing, the first handle 10 has an opening, the second handle is a cover sheet 20 covering the opening, the inside of the first handle 10 has a buckle cavity 1, the cover sheet 20 includes a cover sheet body 21 covering the opening and an extension structure 22 extending downward into the buckle cavity 1, a rounded corner 221 is disposed at a position of the extension structure 22 corresponding to the inner side edge 14 of the first handle 10, the rounded corner 221 is located on a surface of the extension structure 22 away from the first handle 10, a bottom of the rounded corner 221 protrudes from or is flush with a lower surface of the first handle 10, the extension structure 22 is a vertical downward extending vertical plate, the rounded corner 221 is disposed at a lower edge of the vertical plate, a distance L1 between the bottom of the rounded corner 221 and the lower surface of the first handle 10 is 0.2 to 0.5mm, a distance L2 between an outer surface of the extension structure 22 and the inner surface of the first handle 10 is less than or equal to 0.5mm, the second handle also comprises a reinforcing structure 23 which is arranged on the cover plate body 21 and connected with the extending structure 22, the reinforcing structure 23 comprises a reinforcing rib 231 which is arranged on the lower surface of the cover plate body 21 and extends downwards and a connecting rib 232 which is connected between the extending structure 22 and the reinforcing rib 231, the first handle 10 comprises a bottom wall 11 and an inner side wall 12 and an outer side wall 13 which are respectively arranged on two sides of the bottom wall 11, the mouth part enclosed by the upper edge of the inner side wall 12 and the upper edge of the outer side wall 13 forms an opening, the cavity between the inner side wall 12 and the cooker body 40 forms a handle cavity 1, at least part of the inner side wall 12 extends into the space between the extending structure 22 and the reinforcing rib 231, the upper edge of the inner side wall 12 is provided with an avoiding port 121 which avoids the connecting rib 232, the first handle 10 and the second handle are connected by a clamping structure 30 in a clamping way, the second handle also comprises a decorative edge 24 which extends, the clamping structure 30 includes a first hook 31 and a first bayonet 33 which can be mutually buckled, one of the first hook 31 and the first bayonet 33 is arranged on the outer side wall 13, the other of the first hook 31 and the first bayonet 33 is arranged on the inner wall of the decorative border 24, the clamping structure 30 further includes a second hook 32 and a second bayonet 34 which can be mutually buckled, one of the second hook 32 and the second bayonet 34 is arranged on the cover plate body 21, and the other of the second hook 32 and the second bayonet 34 is arranged on the bottom wall 11.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An electric pressure cooker, characterized in that, includes:

the cooker comprises a cooker body (40) and a middle plate (60) arranged at the upper part of the cooker body (40), wherein a cooking cavity is arranged in the cooker body (40);

the handle (50) comprises a first handle (10) and a second handle, the first handle (10) and the outer side wall of the cooker body (40) are integrally formed, and the second handle is installed on the first handle (10).

2. Electric pressure cooker according to claim 1, characterized in that the inside of the handle (50) has a grip cavity (1), and that the inside edge (14) of the handle (50) is provided with a fillet (221).

3. The electric pressure cooker according to claim 2, characterized in that the first handle (10) is a hollow shell, the first handle (10) has an opening, the second handle is a cover sheet (20), the cover sheet (20) comprises a cover sheet body (21) covering the opening and an extension structure (22) located at the inner side of the first handle (10) and extending away from the cover sheet body (21), the cavity between the extension structure (22) and the cooker body (40) forms the handle buckling cavity (1), the first handle (10) has the inner side edge (14) at the part opposite to the opening in the up-down direction, the extension structure (22) is provided with the fillet (221) at least at the position corresponding to the inner side edge (14) of the first handle (10), and the fillet (221) is located at the inner and outer side of the extension structure (22) and away from the first handle (10) And the bottom of the fillet (221) protrudes from or is flush with the lower surface of the first handle (10).

4. The electric pressure cooker according to claim 3, characterized in that the extension structure (22) comprises a vertical plate extending vertically downwards, the fillet (221) is arranged at the lower edge of the vertical plate, and the distance L1 between the bottom of the fillet (221) and the lower surface of the first handle (10) is between 0.2 and 0.5 mm.

5. The electric pressure cooker according to claim 3, characterized in that the extension structure (22) comprises a vertical plate extending vertically downwards, the fillet (221) is arranged at the lower edge of the vertical plate, and the distance L2 between the outer surface of the extension structure (22) and the inner surface of the first handle (10) is less than or equal to 0.5 mm.

6. Electric pressure cooker according to claim 3, characterized in that said second handle further comprises a reinforcement structure (23) provided to said cover body (21) and connected to said extension structure (22).

7. The electric pressure cooker according to claim 6, characterized in that the reinforcing structure (23) comprises a reinforcing rib (231) provided on the lower surface of the cover plate body (21) and extending downward, and a connecting rib (232) connected between the extending structure (22) and the reinforcing rib (231).

8. The electric pressure cooker according to claim 7, characterized in that the first handle (10) comprises a bottom wall (11) and an inner side wall (12) and an outer side wall (13) respectively arranged at two sides of the bottom wall (11), wherein an opening portion surrounded by an upper edge of the inner side wall (12) and an upper edge of the outer side wall (13) forms the opening, at least a part of the inner side wall (12) extends into the space between the extending structure (22) and the reinforcing rib (231), and an avoiding opening (121) for avoiding the connecting rib (232) is arranged at the upper edge of the inner side wall (12).

9. The electric pressure cooker according to claim 1, characterized in that the first handle (10) and the second handle are snap-connected by means of a snap-in structure (30).

10. The electric pressure cooker according to claim 1, characterized in that the inner side of the handle (50) is provided with a handle buckling cavity (1), the first handle (10) is a hollow shell, the upper part of the first handle (10) is provided with an opening, the second handle is a cover sheet (20), the cover sheet (20) comprises a cover sheet body (21) covering the opening and an extension structure (22) which is positioned at the inner side of the first handle (10) and extends downwards, the cavity between the extension structure (22) and the cooker body (40) forms the handle buckling cavity (1), the first handle (10) is provided with an inner side edge (14) at the lower part, the extension structure (22) is provided with a round corner (221) at least at a position corresponding to the inner side edge (14) of the first handle (10), and the round corner (221) is positioned on the surface of the extension structure (22) far away from the first handle (10) in the inner and outer directions The bottom of the fillet (221) protrudes out of or is flush with the lower surface of the first handle (10), the extension structure (22) comprises a vertical plate extending vertically downwards, the fillet (221) is arranged at the lower edge of the vertical plate, the distance L1 between the bottom of the fillet (221) and the lower surface of the first handle (10) is 0.2-0.5 mm, the distance L2 between the outer surface of the extension structure (22) and the inner surface of the first handle (10) is less than or equal to 0.5mm, the second handle further comprises a reinforcing structure (23) arranged on the cover plate body (21) and connected with the extension structure (22), the reinforcing structure (23) comprises a reinforcing rib (231) arranged on the lower surface of the cover plate body (21) and extending downwards and a connecting rib (232) connected between the extension structure (22) and the reinforcing rib (231), first in command (10) include diapire (11) and set up respectively in inside wall (12) and lateral wall (13) of diapire (11) both sides, the last border of inside wall (12) and the oral area that encloses is followed to the last of lateral wall (13) forms the opening, at least part inside wall (12) stretch into extending structure (22) with between strengthening rib (231), the last border department of inside wall (12) is provided with dodges dodge mouthful (121) of splice bar (232), first in command (10) with the second in command passes through joint structure (30) joint and connects.

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