CN218913002U - Stainless steel exhaust flange forging for automobile - Google Patents

Abstract

The utility model discloses a stainless steel exhaust flange forging for an automobile, which is characterized in that the connection of an exhaust flange and an object is completed through a connection structure on a body, so that a connection supporting effect is achieved on an exhaust pipe assembled in a corresponding body, the exhaust pipe penetrates through a mounting hole for mounting, wherein the mounting hole comprises a straight section, an inward arc section, a conical section and an outward arc section which are connected at two ends of the straight section and are sequentially arranged.

Description

Stainless steel exhaust flange forging for automobile

Technical Field

The utility model relates to the technical field of automobiles, in particular to a stainless steel exhaust flange forging for an automobile.

Background

The main effect of the automobile exhaust pipe is that high-temperature exhaust gas generated after the engine works is led into a three-way catalyst or a silencer and discharged, so that stable operation and environment-friendly emission of the engine are ensured, flanges are often used between an engine exhaust manifold and each section of exhaust pipeline to connect the pipelines, and as the requirements of host factories are different, if some host factories require the exhaust flange to be in a welded structure with the exhaust pipe, other host factories require the exhaust pipe to be in a movable structure with the exhaust flange, the existing exhaust flange has poor universality, one flange can only be assembled with a specific exhaust pipe, and when an exhaust pipe assembly is produced, different exhaust pipe flanges are required according to different exhaust pipe types to be matched with the flange, so that the management complexity and the production cost are increased.

Disclosure of Invention

The utility model aims to provide a stainless steel exhaust flange forging for an automobile, which solves the problems that the prior exhaust flange in the prior art has poor universality, one flange can only be assembled with a specific exhaust pipe, and when an exhaust pipe assembly is produced, different exhaust pipe flanges are required to be matched with the exhaust pipe assembly according to different exhaust pipe types, and the variety of the exhaust pipe flanges is increased, so that the management complexity and the production cost are increased.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a stainless steel exhaust flange forging for car, includes integrative forging shaping stainless steel body, be equipped with connection structure on the body, the middle part of body has a mounting hole that is used for installing the blast pipe, the mounting hole includes straight section and connects straight section both ends are arranged in proper order and smooth connection's indent circular arc section, toper section and outer convex circular arc section, straight section both ends indent circular arc section toper section with outer convex circular arc section is with straight section symmetry sets up, straight section's both ends indent circular arc section the toper section with outer convex circular arc section's internal diameter size increases gradually.

Further, the body is annular, a plurality of lugs are arranged at intervals in the circumferential direction of the body, and the connecting structure is arranged on the lugs.

Further, an assembling portion is arranged on the lug, the connecting structure is arranged on the assembling portion, the end face of the assembling portion is arranged flatly, and the height difference between the upper end face of the assembling portion and the upper end face of the body is H, H=3+/-0.05 mm.

Further, the connecting structure comprises counter bores and connecting holes which are arranged along the axial direction of the body and are communicated with each other, and the connecting holes are through holes.

Further, the counter bore is a hexagonal counter bore.

The utility model provides a stainless steel exhaust flange forging for an automobile, which comprises a stainless steel body formed by integral forging, wherein the stainless steel body is forged by stainless steel, so that the stainless steel exhaust flange forging has good high-temperature resistance effect and is not easy to rust; the connecting structure is arranged on the body, the connection of the exhaust flange and the object is completed through the connecting structure, the connection supporting effect is achieved on the exhaust pipe assembled in the corresponding body, connection reliability is guaranteed, the exhaust pipe passes through the mounting hole to be mounted, the mounting hole comprises a flat section, an inward concave circular arc section, a conical section and an outward convex circular arc section, the inward concave circular arc section, the conical section and the outward convex circular arc section are connected at two ends of the flat section and are sequentially arranged, when the exhaust pipe is mounted, the first end of the mounting hole is inserted into the second end, when the exhaust pipe is a common straight circular pipe, the flat section of the mounting hole is connected with the outer peripheral wall of the exhaust pipe in a matched mode, the inward concave circular arc section and the conical section of the second end of the mounting hole are fixedly connected with the outer peripheral wall of the exhaust pipe in a matched mode, and the two sections of the exhaust pipe are reliably connected in a butt joint mode.

Drawings

FIG. 1 is a schematic perspective view of a stainless steel exhaust flange forging for an automobile in an embodiment of the utility model;

FIG. 2 is a schematic view of a stainless steel exhaust flange forging for an automobile according to an embodiment of the present utility model from another perspective;

FIG. 3 is a cross-sectional view taken along the direction C-C in FIG. 2;

FIG. 4 is a schematic diagram showing a connection structure between an automotive stainless steel exhaust flange forging and an exhaust pipe in an embodiment of the present utility model;

FIG. 5 is a schematic diagram II of a connection between an automotive stainless steel exhaust flange forging and an exhaust pipe;

fig. 6 is a partial enlarged view at B in fig. 5.

In the figure: 1. a body; 2. an exhaust pipe; 11. a connection structure; 12. a mounting hole; 13. a lug; 14. an assembling portion; 111. countersink; 112. a connection hole; 121. a straight section; 122. a concave arc section; 123. a conical section; 124. an outer convex arc section; 201. a welding part; 202. an outer ring table; 203. a step.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 6, an embodiment of the present utility model provides a stainless steel exhaust flange forging for an automobile, including a stainless steel body 1 integrally forged and formed, a connection structure 11 is provided on the body 1, a mounting hole 12 for mounting an exhaust pipe 2 is provided in the middle of the body 1, the mounting hole 12 includes a straight section 121, and an inner concave arc section 122, a conical section 123 and an outer convex arc section 124 which are sequentially arranged at two ends of the straight section 121 and are smoothly connected, the inner concave arc section 122, the conical section 123 and the outer convex arc section 124 at two ends of the straight section 121 are symmetrically arranged with respect to the straight section 121, the mounting hole 12 is a circular hole, the middle of the inner wall of the mounting hole 12 is the straight section 121, and the inner diameters of the inner concave arc section 122, the conical section 123 and the outer convex arc section 124 at two ends of the straight section 121 are gradually increased. Typically, the taper a of the tapered section 123 is 5 deg. ±0.5°, with a taper of 5 ° being preferred.

Specifically, the body 1 is forged by stainless steel, so that the high-temperature-resistant effect is good, and rust is not easy to occur; the body 1 is provided with a connecting structure 11, the connection of the exhaust flange and the object is completed through the connecting structure 11, so that the connection supporting effect is achieved on the exhaust pipe 2 assembled in the body 1 and the object, the connection reliability is ensured, the exhaust pipe 2 passes through the mounting hole 12 to be mounted, wherein the mounting hole 12 comprises a straight section 121, an inward arc section 122, a conical section 123 and an outward arc section 124 which are connected at two ends of the straight section 121 and are sequentially arranged, when the exhaust pipe 2 is mounted, a second end is inserted from the first end of the mounting hole 12, when the exhaust pipe 2 is a common straight round pipe, the straight section of the mounting hole 12 is connected with the outer peripheral wall of the exhaust pipe 2 in a matched manner, the inward arc section 122 and the conical section 123 at the second end of the mounting hole 12 are fixedly connected with the exhaust pipe 2 through a welding process (a welding part 201 shown in fig. 4 is formed after the welding is completed), and the outward arc section 124 and the conical section 123 can provide an operation space (namely welding groove) for the mounting sealing ring; when the exhaust pipe 2 with the outer ring table 202 structure at the end part is adopted, the straight section 121 of the mounting hole 12 is matched and connected with the outer peripheral wall of the exhaust pipe 2, the concave arc section 122 at the second end of the mounting hole 12 is matched and clamped with the outer ring table 202 of the exhaust pipe 2 to provide the axial pressing force required by connection, so that the two sections of connected exhaust pipes 2 are reliably abutted and fixed; the utility model can adapt to different exhaust pipe 2 structures by the structure of the mounting hole 12, and has strong adaptability.

Further, the body 1 is annular, a plurality of lugs 13 are arranged at intervals in the circumferential direction of the body 1, the connecting structure 11 is arranged on the lugs 13, and by arranging the lugs 13 on the body 1, on one hand, structural interference during installation of the connecting structure 11 can be reduced, and meanwhile, the strength of the body 1 is increased through the lugs 13. The lug 13 in this embodiment is provided with the assembly portion 14, the connection structure 11 is arranged on the assembly portion 14, the end face of the assembly portion 14 is arranged flatly, the height difference between the upper end face of the assembly portion 14 and the upper end face of the body 1 is H, h=3±0.05mm, H in this embodiment is preferably 3.02, generally, when two exhaust flanges are installed, the body 1 is fastened and fixed through the connection bolt, and the end face of the assembly portion 14 and the end face of the body 1 are provided with the step difference, so that the use amount of raw materials can be saved, and meanwhile, the end face of the bolt is ensured not to protrude on the end face of the body 1, and interference is further generated to other structures.

The connecting structure 11 in this embodiment includes a counter bore 111 and a connecting hole 112 which are axially arranged along the body 1 and are mutually communicated, the connecting hole 112 is a through hole, a general outer hexagonal bolt includes a head portion and a stem portion, wherein the stem portion passes through the connecting hole 112, and the head portion is located in the counter bore 111, so that the head portion can be better hidden to avoid interference. The counterbore 111 in this embodiment is generally a hexagonal counterbore 111, and correspondingly uses an outer hexagonal bolt.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a stainless steel exhaust flange forging for car which characterized in that: including integrative forging fashioned stainless steel body, be equipped with connection structure on the body, the middle part of body has a mounting hole that is used for installing the blast pipe, the mounting hole includes straight section and connects straight section both ends are arranged in proper order and smooth connection's indent circular arc section, toper section and outer convex circular arc section, straight section both ends indent circular arc section toper section with outer convex circular arc section is with straight section symmetry sets up, straight section's both ends indent circular arc section the toper section with the internal diameter size of outer convex circular arc section increases gradually.

2. The automotive stainless steel exhaust flange forging according to claim 1, wherein: the body is annular, a plurality of lugs are arranged at intervals in the circumferential direction of the body, and the connecting structure is arranged on the lugs.

3. The automotive stainless steel exhaust flange forging according to claim 2, wherein: the lug is provided with an assembly part, the connecting structure is arranged on the assembly part, the end face of the assembly part is arranged flatly, and the height difference between the upper end face of the assembly part and the upper end face of the body is H, H=3+/-0.05 mm.

4. A stainless steel exhaust flange forging for an automobile according to claim 3, wherein: the connecting structure comprises counter bores and connecting holes which are axially arranged along the body and are mutually communicated, and the connecting holes are through holes.

5. The automotive stainless steel exhaust flange forging according to claim 4, wherein: the counter bore is a hexagonal counter bore.

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