Heat shield utilizing negative-angle welding edge

Abstract

The utility model discloses a heat shield utilizing a negative-angle welding edge, and relates to the technical field of heat shields. The heat insulation cover comprises a product body and a heat insulation cover body, the product body comprises an elbow section, the two ends of the elbow section are connected with a flange and a conical hopper respectively, the heat insulation cover body comprises a left cover body and a right cover body, the left cover body and the right cover body are symmetrically arranged on the product body in a sleeving mode, and inner folding edges are arranged on the edges of the left cover body and the right cover body. Heat insulation cotton cavities are formed between the inner folding edges of the left cover body and the right cover body. According to the heat shield structure with the negative-angle welding edge design, butt joint points are flush and smooth, welding grooves can be formed, positioning of the two connector ends on the conical hopper is matched, positioning welding is facilitated, welding quality and efficiency are improved, the assembly efficiency of the heat shield is improved, the welding tightness can be improved through the welding edge of the double-layer structure, and meanwhile compared with landing edge welding, the welding efficiency is improved. The efficiency is improved, meanwhile, sharp corner flash is avoided, and the welding quality, appearance and safety are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat insulation covers, in particular to a heat insulation cover with a negative angle welding edge. Background Art

[0002] The air inlet or air outlet end of the three-way catalytic component is composed of a cone (cone or square cone or square connected to circle), an elbow and a flange, and interfaces are arranged on the cone for the positioning and installation of various sensors. Therefore, the heat shield structure at the air inlet or air outlet end is more complicated than the straight-cylinder heat shield structure, and cannot be positioned and installed quickly and accurately. If a docking-type heat shield is designed, there may be excess margin or large gap at the docking point, which will make subsequent welding difficult, the welding effect poor, the assembly efficiency low, the aesthetics insufficient, and the appearance of burrs and sharp corners that affect safety. Summary of the Invention

[0003] The purpose of the utility model is to provide a heat shield using a negative angle welding edge. The heat shield structure designed with a negative angle welding edge has a flat and smooth docking point and can form a welding groove. The positioning of the two interface ends on the cone bucket is conducive to positioning welding, improving welding quality and efficiency, and improving the assembly efficiency of the heat shield. The double-layer structure of the welding edge can improve welding tightness. Compared with lap welding, the efficiency is improved while avoiding sharp flash, ensuring welding quality, appearance and safety.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The utility model is a heat shield with a negative angle welding edge, comprising a product body and a heat shield body, wherein the product body comprises an elbow section, and both ends of the elbow section are respectively connected with a flange and a cone bucket;

[0006] The heat-insulating cover includes a left cover and a right cover, and the left cover and the right cover are symmetrically sleeved on the product body. The edges of the left cover and the right cover are provided with inner folds, and a heat-insulating cotton cavity is formed between the inner folds of the left cover and the right cover;

[0007] The inner sides of the adjacent inner folds of the left cover body and the right cover body are connected with flanges through a 180-degree bending portion. The left cover body and the right cover body are connected by welding, and the welding point of the left cover body and the right cover body is located between the adjacent bending portions of the left cover body and the right cover body.

[0008] Furthermore, a first interface end and a second interface end are provided on the peripheral side surface of the cone bucket segment, and the first interface end is opposite to the flange.

[0009] Furthermore, arc-shaped openings are provided on opposite sides of the left cover body and the right cover body, and a first clearance opening is formed between the arc-shaped openings of the left cover body and the right cover body. The first interface end passes through the first clearance opening and is gap-fitted with the first clearance opening.

[0010] Furthermore, a second clearance opening is provided on the right cover body, and the second interface end passes through the second clearance opening and is loosely fitted with the second clearance opening.

[0011] Furthermore, a first concave reinforcement portion is provided on the left and right cover bodies at the outer edge of the arc-shaped opening, and a second concave reinforcement portion is provided on the right cover body at the outer edge of the second clearance opening.

[0012] Furthermore, an expanded neck section is provided on the left cover body and the right cover body at the connection between the cone bucket and the elbow section, and arc-shaped transition portions are provided at both ends of the expanded neck section.

[0013] The utility model has the following beneficial effects:

[0014] The utility model adopts the heat shield structure designed with negative angle welding edge, and the docking point is flush and smooth, and can form a welding groove, which is conducive to positioning welding with the positioning of the two interface ends on the cone bucket, thereby improving the welding quality and efficiency and the assembly efficiency of the heat shield. The double-layer structure of the welding edge can improve the welding tightness. At the same time, compared with the overlap welding, the efficiency is improved while avoiding sharp flash, thereby ensuring the welding quality, appearance and safety.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic structural diagram of a heat shield utilizing a negative angle welding edge according to the present invention;

[0018] Figure 2 Schematic diagram of the structure of the left cover body and the right cover body;

[0019] Figure 3 It is a structural cross-sectional view of the connection between the left cover body and the right cover body;

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] 1-product body, 2-left cover body, 3-right cover body, 101-elbow section, 102-flange, 103-cone bucket, 104-first interface end, 105-second interface end, 201-inner folding edge, 202-bending part, 203-flanged edge, 204-arc-shaped mouth, 205-first reinforcement part, 206-expanded neck section, 301-second give way mouth, 302-second reinforcement part. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-3 As shown, the utility model is a heat shield using a negative angle welding edge, comprising a product body 1 and a heat shield body, wherein the product body 1 comprises an elbow section 101, and the two ends of the elbow section 101 are respectively connected to a flange 102 and a cone 103;

[0024] The heat-insulating cover body includes a left cover body 2 and a right cover body 3. The left cover body 2 and the right cover body 3 are symmetrically sleeved on the product body 1. The edges of the left cover body 2 and the right cover body 3 are provided with inner folds 201. A heat-insulating cotton cavity is formed between the inner folds 201 of the left cover body 2 and the right cover body 3.

[0025] The inner sides of the adjacent inner fold edges 201 of the left cover body 2 and the right cover body 3 are connected with flanges 203 through a 180-degree bending portion 202. The left cover body 2 and the right cover body 3 are connected by welding, and the welding point of the left cover body 2 and the right cover body 3 is located between the adjacent bending portions 202 of the left cover body 2 and the right cover body 3.

[0026] Among them Figure 1-2 As shown, a first interface end 104 and a second interface end 105 are provided on the circumferential side of the cone bucket 103 , and the first interface end 104 is opposite to the flange 102 .

[0027] Among them Figure 1-2 As shown, an arc-shaped opening 204 is provided on the opposite side of the left cover body 2 and the right cover body 3, and a first clearance opening is formed between the arc-shaped openings 204 of the left cover body 2 and the right cover body 3. The first interface end 104 passes through the first clearance opening and is gap-fitted with the first clearance opening.

[0028] Among them Figure 1-2 As shown, a second clearance opening 301 is provided on the right cover body 3 , and the second interface end 105 passes through the second clearance opening 301 and is loosely fitted with the second clearance opening 301 .

[0029] Among them Figure 1-2 As shown, a concave first reinforcement portion 205 is provided on the left cover body 2 and the right cover body 3 and at the outer edge of the arc-shaped opening 204, and a concave second reinforcement portion 302 is provided on the right cover body 3 and at the outer edge of the second clearance opening 301.

[0030] Among them Figure 1-2 As shown, an expanded neck section 206 is provided on the left cover body 2 and the right cover body 3 at the connection between the cone bucket 103 and the elbow section 101, and arc-shaped transition portions are provided at both ends of the expanded neck section 206.

[0031] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0032] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A heat shield with a negative angle weld edge, comprising a product body (1) and a heat shield body, wherein the product body (1) comprises an elbow section (101), and the two ends of the elbow section (101) are respectively connected to a flange (102) and a cone (103), and the characteristics are: The heat-insulating cover body comprises a left cover body (2) and a right cover body (3), wherein the left cover body (2) and the right cover body (3) are symmetrically sleeved on the product body (1), and inner folding edges (201) are provided at the edges of the left cover body (2) and the right cover body (3), and a heat-insulating cotton cavity is formed between the inner folding edges (201) of the left cover body (2) and the right cover body (3); The inner sides of the adjacent inner folding edges (201) of the left cover body (2) and the right cover body (3) are connected to flanges (203) via a 180-degree bending portion (202); the left cover body (2) and the right cover body (3) are connected by welding; and the welding point of the left cover body (2) and the right cover body (3) is located between the adjacent bending portions (202) of the left cover body (2) and the right cover body (3).

2. A heat shield with a negative angle weld edge according to claim 1, characterized in that: The cone bucket (103) is provided with a first interface end (104) and a second interface end (105) on the circumferential side surface thereof, and the first interface end (104) is positioned opposite to the flange (102).

3. A heat shield with a negative angle weld edge according to claim 2, characterized in that: The left cover body (2) and the right cover body (3) are both provided with arc-shaped openings (204) on opposite sides, a first clearance opening is formed between the arc-shaped openings (204) of the left cover body (2) and the right cover body (3), and the first interface end (104) passes through the first clearance opening and is clearance-matched with the first clearance opening.

4. A heat shield with a negative angle weld edge according to claim 3, characterized in that: The right cover body (3) is provided with a second clearance opening (301), and the second interface end (105) passes through the second clearance opening (301) and is clearance-matched with the second clearance opening (301).

5. A heat shield with negative angle welding edges according to claim 4, characterized in that: A first concave reinforcing portion (205) is provided on the left cover body (2) and the right cover body (3) at the outer edge of the arc-shaped opening (204), and a second concave reinforcing portion (302) is provided on the right cover body (3) at the outer edge of the second clearance opening (301).

6. The heat shield using negative angle welding edges according to claim 1, characterized in that: An expanded neck section (206) is provided on the left cover body (2) and the right cover body (3) at the connection between the cone bucket (103) and the elbow section (101), and arc-shaped transition portions are provided at both ends of the expanded neck section (206).

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