Curved surface welding-free connecting structure of air inlet channel

Abstract

The application discloses a curved surface welding-free connecting structure of an air inlet channel, which comprises an air channel front plate, an air channel back plate and a side connecting plate, the left and right sides of the air channel front plate and the air channel back plate are provided with front-back plate connecting pieces, the front and back sides of the side connecting plate are formed with side connecting pieces through rolling, the cross section of the side connecting piece is U-shaped, the opening of the side connecting piece faces outward, a limiting part is formed at the opening of the side connecting piece through rolling, and buckle assemblies are arranged on the front-back plate connecting pieces. The air channel front plate and the air channel back plate are connected through the side connecting plate, the front and back sides of the side connecting plate are formed with side connecting pieces with U-shaped cross sections through rolling, the left and right sides of the air channel front plate and the air channel back plate are formed with front-back plate connecting pieces through rolling, the front-back plate connecting pieces are clamped into the side connecting pieces to complete the connection of the air channel front plate, the air channel back plate and the side connecting plate, and the clamping mode is adopted to replace welding, so that the assembly is more convenient and the cost is lower.

Description

TECHNICAL FIELD

[0001] The present application relates to the integrated stove technical field, especially to a curved surface welding-free connecting structure of air inlet duct. BACKGROUND

[0002] The air inlet duct on the market is manufactured by large mold, and after forming, it is cut in the middle into front and rear parts, and the connecting part is rolled and welded. Its manufacturing process is complex, the process is many, and the mold development cost is high, so it needs to be improved. SUMMARY

[0003] The present application provides a new curved surface welding-free connecting structure of air inlet duct to solve the defects of complex process and high cost of the existing technology.

[0004] In order to solve the above technical problems, the present application realizes the following technical scheme:

[0005] A curved surface welding-free connecting structure of air inlet duct, comprising a front air duct plate, a rear air duct plate and a side connecting plate, the left and right sides of the front air duct plate and the rear air duct plate are provided with front and rear plate connecting parts, the front and rear sides of the side connecting plate are formed with side connecting parts by rolling, the cross section of the side connecting part is U-shaped, the opening of the side connecting part faces outward, and the opening of the side connecting part is formed with a limiting part by rolling, the front and rear plate connecting parts are inserted into the side connecting part, and the buckle assembly is in abutment with the limiting part.

[0006] The front and rear air duct plates are connected by the side connecting plate, the front and rear sides of the side connecting plate are formed with side connecting parts with U-shaped cross section by rolling, the left and right sides of the front and rear air duct plates are formed with front and rear plate connecting parts by rolling, the front and rear plate connecting parts are inserted into the side connecting part to complete the connection of the front and rear air duct plates and the side connecting plate, and the clamping mode is used instead of welding, which is more convenient to assemble and has lower cost.

[0007] As a preferred, the buckle assembly of the curved surface welding-free connecting structure of air inlet duct is provided with a buckle inclined surface.

[0008] The setting of the buckle inclined surface provides convenience for the process of inserting the front and rear plate connecting parts into the side connecting part.

[0009] As preferred, the curved surface non-welding connecting structure of the air inlet duct, the side connecting piece comprises a first folded plate, a connecting curved part, a second folded plate, a special-shaped folded plate and a third folded plate connected in sequence, the first folded plate, the connecting curved part, the second folded plate and the special-shaped folded plate jointly form a U-shaped groove, the first folded plate and the A surface of the front and rear plate connecting piece form a plane seal, the special-shaped folded plate is protruded to the outside and forms a buckle containing space on the inside, the buckle assembly is arranged in the buckle containing space, the third folded plate is located in the U-shaped groove, and the end of the third folded plate is the limiting part abutting against the buckle assembly.

[0010] The end of the third folded plate abutting against the buckle assembly can play a locking role, so that the connection of the front plate of the air duct, the rear plate of the air duct and the side connecting plate is more close.

[0011] As preferred, the curved surface non-welding connecting structure of the air inlet duct, the connecting part of the second folded plate and the special-shaped folded plate abuts against the front and rear plate connecting piece.

[0012] The connecting part of the second folded plate and the special-shaped folded plate abutting against the front and rear plate connecting piece can play a role of fixing the front and rear plate connecting piece, so as to ensure the plane seal state between the A surface of the first folded plate and the front and rear plate connecting piece.

[0013] As preferred, the curved surface non-welding connecting structure of the air inlet duct, the third folded plate and the B surface of the front and rear plate connecting piece form a plane seal.

[0014] The third folded plate and the B surface of the front and rear plate connecting piece form a plane seal, so as to avoid the oil fume in the air duct from running out.

[0015] As preferred, the curved surface non-welding connecting structure of the air inlet duct, the buckle assembly comprises at least two convex stamps.

[0016] The buckle assembly comprises at least two convex stamps, so as to form multi-point buckling, and the connection of the front plate of the air duct, the rear plate of the air duct and the side connecting plate is more close and stable. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is an explosion view of the present application;

[0018] Figure 2 is a structural schematic view of the present application;

[0019] Figure 3 is a structural schematic view of the side connecting plate in the present application;

[0020] Figure 4 is Figure 3A magnified view of a section at point A in the middle;

[0021] Figure 5 This is a cross-sectional view of the rear plate of the air duct in this invention;

[0022] Figure 6 for Figure 5 A magnified view of a section at point B. Detailed Implementation

[0023] The following is in conjunction with the appendix Figures 1-6 The invention will be further described in detail with reference to specific embodiments, but these are not intended to limit the invention:

[0024] Example 1

[0025] A curved, weld-free connection structure for an air inlet includes a front plate 1, a rear plate 2, and a side connecting plate 3. Front and rear plate connectors 4 are provided on both the left and right sides of the front plate 1 and the rear plate 2. Side connecting plates 31 are formed on both the front and rear sides by rolling. The cross-section of the side connecting plate 31 is U-shaped, with the opening facing outwards. A limiting portion 32 is formed at the opening of the side connecting plate 31 by rolling. A snap-fit ​​assembly 41 is provided on the front and rear plate connectors 4. The front and rear plate connectors 4 are inserted into the side connecting plates 31, and the snap-fit ​​assembly 41 abuts against the limiting portion 32.

[0026] Preferably, the buckle assembly 41 is provided with a buckle bevel 42.

[0027] Preferably, the side connector 31 includes a first folding plate 33, a connecting curved portion 34, a second folding plate 35, an irregularly shaped folding plate 36, and a third folding plate 37 connected in sequence. The first folding plate 33, the connecting curved portion 34, the second folding plate 35, and the irregularly shaped folding plate 36 together form a U-shaped groove. The first folding plate 33 forms a planar seal with the A-side 5 of the front and rear plate connector 4. The irregularly shaped folding plate 36 protrudes outward and forms a snap-fit ​​accommodating space 361 on the inner side. The snap-fit ​​assembly 41 is placed in the snap-fit ​​accommodating space 361. The third folding plate 37 is located in the U-shaped groove. The end of the third folding plate 37 is the limiting portion 32, which abuts against the snap-fit ​​assembly 41.

[0028] Preferably, the connection between the second folding plate 35 and the irregular folding plate 36 abuts against the front and rear plate connector 4.

[0029] Preferably, the third folding plate 37 forms a planar seal with the B-side 6 of the front and rear plate connector 4.

[0030] Preferably, the snap-fit ​​assembly 41 includes at least two embossed prints 411.

[0031] In the assembling process, the front and back plate connecting members 4 on the air duct front plate 1 are aligned with the side connecting members 31 on the side connecting plates 3 and inserted, the two side connecting plates 3 and the air duct front plate 1 are connected, then the air duct back plate 2 is taken, the front and back plate connecting members 4 on the air duct back plate 2 are aligned with the side connecting members 31 on the side connecting plates 3 and inserted, thus the air duct is assembled.

[0032] In summary, the above description is only the preferred embodiment of the present application, any equivalent changes and modifications made within the scope of the present application should be included in the scope of the present application.

Claims

1. A curved surface non-welded connecting structure of an air inlet channel, comprising an air channel front plate (1), an air channel back plate (2), and a side connecting plate (3), characterized in that: The front and rear air duct plates (1) and (2) are provided with front and rear plate connecting members (4) on both sides, the side connecting plates (3) are provided with side connecting members (31) on both sides by rolling, the cross section of the side connecting members (31) is U-shaped, the opening of the side connecting members (31) faces outward, the side connecting members (31) are provided with limiting portions (32) at the opening by rolling, the front and rear plate connecting members (4) are provided with buckle assemblies (41), the front and rear plate connecting members (4) are inserted into the side connecting members (31) and the buckle assemblies (41) abut against the limiting portions (32); The buckle assemblies (41) are provided with buckle inclined surfaces (42); The side connecting members (31) comprise first folding plates (33), connecting curved portions (34), second folding plates (35), special-shaped folding plates (36) and third folding plates (37) connected in sequence, the first folding plates (33), the connecting curved portions (34), the second folding plates (35) and the special-shaped folding plates (36) jointly form a U-shaped groove, the first folding plates (33) form a plane seal with A surfaces (5) of the front and rear plate connecting members (4), the special-shaped folding plates (36) protrude outward and form buckle accommodation spaces (361) on the inner side, the buckle assemblies (41) are arranged in the buckle accommodation spaces (361), the third folding plates (37) are located in the U-shaped groove, and the third folding plates (37) abut against the buckle assemblies (41) at the limiting portions (32); The second folding plates (35) abut against the front and rear plate connecting members (4) at the connecting portions of the second folding plates (35) and the special-shaped folding plates (36); The third folding plates (37) form a plane seal with B surfaces (6) of the front and rear plate connecting members (4).

2. The curved surface non-welded connecting structure of an air inlet according to claim 1, characterized in that: The buckle assemblies (41) comprise at least two embossings (411).

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