Silencer four-hole flange positioning device

Abstract

The utility model particularly relates to the technical field of silencers, and discloses a silencer four-hole flange positioning device which comprises a silencer assembly and a flange assembly, the silencer assembly comprises an outer shell, an air inlet pipe is connected to one end of the outer shell in an inserted mode, and the flange assembly comprises a flange plate arranged on the outer surface of the outer shell in a sleeved mode. Threaded grooves are formed in the four corners of the flange plate, a limiting base is fixedly arranged on the side wall, close to the outer shell, of the flange plate, an inserting groove is formed in the middle of the flange plate and sequentially penetrates through the flange plate and the limiting base, and two second protruding blocks are symmetrically and fixedly arranged on the side wall, close to the limiting base, of the air inlet pipe. The silencer assembly and the flange assembly are arranged, the inserting groove penetrates through the flange plate and the limiting base to be matched with the inner size of the air inlet pipe, the clamping grooves are symmetrically formed in the side wall of the limiting base to be communicated with the inserting groove, and therefore the convenience of installation and positioning of the flange plate and the outer shell is improved, and the installation precision of the outer shell and the flange plate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mufflers, and particularly relates to a four-hole flange positioning device for a muffler. Background Technique

[0002] An automobile muffler is a part used to reduce the exhaust noise generated when the engine of a motor vehicle operates. The muffler can be installed at the end of the engine exhaust pipe through a four-hole flange, thereby realizing the connection of the pipeline. Since the length difference between the two pipelines in the automobile muffler is equal to half of the wavelength of the sound wave emitted by the automobile, the two sound waves interfere with each other and cancel each other out when they are superimposed, weakening the sound intensity and reducing the sound, thus achieving the effect of silencing.

[0003] During the assembly process of the existing four-hole flange positioning device for a muffler, the operator needs to first insert the intake pipe of the muffler into the socket in the middle of the flange for welding. During the flange welding process, the flange may be displaced, which may affect the installation accuracy of the flange and the muffler housing. Summary of the Utility Model

[0004] The utility model provides a four-hole flange positioning device for a muffler, aiming to solve the problem that during the assembly process of the existing four-hole flange positioning device for a muffler, the operator needs to first insert the intake pipe of the muffler into the socket in the middle of the flange for welding, and during the flange welding process, the flange may be displaced, which may affect the installation accuracy of the flange and the muffler housing.

[0005] The utility model is realized as follows. A four-hole flange positioning device for a muffler includes a muffler assembly and a flange assembly. The muffler assembly includes a housing body. One end of the housing body is inserted with an intake pipe. The flange assembly includes a flange plate sleeved on the outer surface of the housing body. Threaded grooves are provided at the four corner positions of the flange plate. A limiting seat is fixedly provided on the side wall of the flange plate close to the housing body. A socket is provided in the middle of the flange plate, which sequentially penetrates through the flange plate and the limiting seat. Two convex blocks II are symmetrically and fixedly provided on the side wall of the intake pipe close to the limiting seat. Two clamping grooves are symmetrically provided on the side wall of the limiting seat for the convex blocks II to be clamped.

[0006] Preferably, a partition I is fixedly provided on the inner side wall of the housing body. One end of the convex block II penetrates through the partition I and is provided with a plurality of hole grooves. A communicating pipe is inserted above the hole grooves close to the partition I, which improves the noise reduction efficiency.

[0007] Preferably, a partition II is fixedly provided on the inner side wall of the housing body close to the end of the intake pipe. An exhaust pipe is inserted into the other end of the housing body. One end of the exhaust pipe sequentially penetrates through the housing body, the partition II and the partition I, which is convenient for the exhaust gas to be discharged.

[0008] Preferably, two first bumps are symmetrically and fixedly arranged at the end of the air inlet pipe close to the outer shell, and the first bumps are perpendicular to the side wall of the outer shell. The two first bumps are located at the same horizontal position as the second bump in sequence, which improves the convenience of installing and positioning the first bump.

[0009] Preferably, a groove is formed on the side wall of the flange away from the outer shell, and the groove communicates with the slot.

[0010] Preferably, a friction surface is engraved on the surface of the flange close to the groove, and the friction surface is in a concentric circle structure, which improves the sealing performance of the connection of the flange.

[0011] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0012] Firstly, by providing a muffler assembly and a flange assembly, the slot penetrates through the flange and the limit seat and is adapted to the internal dimension of the air inlet pipe, and the clamping grooves are symmetrically formed on the side wall of the limit seat and communicate with the slot, thereby improving the convenience of installing and positioning the flange and the outer shell, and improving the installation accuracy of the outer shell and the flange. Secondly, by providing the first bumps, the first bumps are symmetrically distributed and are connected with the outer shell, which improves the installation and positioning accuracy of the air inlet pipe and the outer shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front three-dimensional structural schematic diagram of the present utility model.

[0014] Figure 2 It is a side three-dimensional structural schematic diagram of the present utility model.

[0015] Figure 3 It is an exploded structural schematic diagram of the present utility model.

[0016] Figure 4 It is a front cross-sectional structural schematic diagram of the muffler of the present utility model.

[0017] Reference numerals are: 1, muffler assembly; 101, outer shell; 102, air inlet pipe; 103, first bump; 104, air outlet pipe; 105, second bump; 106, hole groove; 107, first partition; 108, connecting pipe; 109, second partition; 2, flange assembly; 201, flange; 202, slot; 203, groove; 204, thread groove; 205, friction surface; 206, limit seat; 207, clamping groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0019] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] Please refer to Figures 1-4 , an embodiment provided by the present utility model: a four-hole flange positioning device for a muffler, comprising a muffler assembly 1 and a flange assembly 2. The muffler assembly 1 includes a housing 101, and an intake pipe 102 is inserted at one end of the housing 101 for intake. The flange assembly 2 includes a flange plate 201 sleeved on the outer surface of the housing 101. Thread grooves 204 are provided at four corner positions of the flange plate 201 for bolt connection. A groove 203 is provided on the side wall of the flange plate 201 away from the housing 101 for clamping a sealing ring. The groove 203 communicates with a slot 202. The sealing ring is annular and can be made of graphite material to improve the sealing performance of the flange connection. The sealing ring is a prior art and will not be elaborated herein. A friction surface 205 is engraved on the surface of the flange plate 201 near the groove 203. The friction surface 205 has a concentric circle structure, increasing the friction force of the flange connection contact surface and improving the sealing performance of the flange connection. A limit seat 206 is fixedly provided on the side wall of the flange plate 201 near the housing 101. A slot 202 is provided in the middle of the flange plate 201, which sequentially penetrates the flange plate 201 and the limit seat 206 for the intake pipe 102 to be inserted. The external dimensions of the intake pipe 102 are adapted to the internal dimensions of the slot 202. Two second protrusions 105 are symmetrically and fixedly provided on the side wall of the intake pipe 102 near the limit seat 206. Two clamping grooves 207 are symmetrically provided on the side wall of the limit seat 206 for the second protrusions 105 to be clamped. The internal dimensions of the slot 202 and the clamping grooves 207 are adapted to the external dimensions of the intake pipe 102 and the second protrusions 105, improving the connection stability between the intake pipe 102 and the flange plate 201, thereby avoiding the offset and rotation generated by welding the intake pipe 102 and the flange plate 201, and improving the installation and positioning accuracy of the flange plate 201 and the housing 101.

[0021] On the inner side wall of the outer housing 101, a first partition 107 is fixedly provided. One end of the second convex block 105 penetrates through the first partition 107 and is provided with a plurality of hole grooves 106 for diverting and weakening the exhaust gas noise, improving the noise reduction efficiency. Above the hole grooves 106 near the first partition 107, a connecting pipe 108 is inserted. On the inner side wall of the outer housing 101 near the end of the intake pipe 102, a second partition 109 is fixedly provided. The second partition 109 and the first partition 107 are used to partition the interior of the outer housing 101, so that the exhaust gas noise is superimposed and offset between the first partition 107 and the second partition 109. At the other end of the outer housing 101, an exhaust pipe 104 is inserted. One end of the exhaust pipe 104 sequentially penetrates through the outer housing 101, the second partition 109 and the first partition 107, facilitating the discharge of the exhaust gas.

[0022] At the end of the intake pipe 102 close to the outer housing 101, two first convex blocks 103 are symmetrically and fixedly provided. The first convex blocks 103 are perpendicular to the side wall of the outer housing 101. The two first convex blocks 103 are sequentially in the same horizontal position as the second convex block 105, so that the first convex blocks 103 support and limit the intake pipe 102, improving the insertion accuracy of the intake pipe 102. Keeping the first convex blocks 103 perpendicular to the side wall of the outer housing 101 can improve the installation and positioning of the second convex block 105.

[0023] Working principle: When this four-hole flange positioning device of the muffler is in use, the operator first inserts the intake pipe 102 at the middle position of one end of the outer housing 101. The first convex blocks 103 support and limit the intake pipe 102, improving the insertion accuracy of the intake pipe 102. Keeping the first convex blocks 103 perpendicular to the side wall of the outer housing 101 can improve the installation and positioning of the second convex block 105. Then, the intake pipe 102 and the second convex block 105 are sequentially inserted into the inner parts of the slot 202 and the card slot 207. The internal dimensions of the slot 202 and the card slot 207 are adapted to the external dimensions of the intake pipe 102 and the second convex block 105, improving the connection stability between the intake pipe 102 and the flange 201, thus avoiding the offset and rotation generated by welding the intake pipe 102 and the flange 201, and improving the installation and positioning accuracy of the flange 201 and the outer housing 101. The intake pipe 102 is inserted into the outer housing 101 to convey the exhaust gas. The hole grooves 106 are used to divert and weaken the exhaust gas noise. The exhaust gas noise is superimposed and offset between the first partition 107 and the second partition 109. The exhaust gas is discharged from the exhaust pipe 104 through the connecting pipe 108, thus reducing the noise of the exhaust gas.

[0024] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0025] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the above-mentioned units may have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0026] The units described above as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions, or other adjustments to the features in the embodiments of the present invention according to the situation without creative efforts, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention. These technical solutions also belong to the scope of protection of the present invention.

Claims

1. A four-hole flange positioning device for a muffler, characterized in that, It includes a muffler component (1) and a flange component (2): The muffler component (1) includes a housing (101), one end of the housing (101) is inserted with an intake pipe (102), the flange component (2) includes a flange plate (201) sleeved on the outer surface of the housing (101), threaded grooves (204) are provided at four corner positions of the flange plate (201), a limit seat (206) is fixedly provided on the side wall of the flange plate (201) close to the housing (101), a slot (202) is provided in the middle of the flange plate (201) and penetrates through the flange plate (201) and the limit seat (206) in sequence, and two second protrusions (105) are symmetrically and fixedly provided on the side wall of the intake pipe (102) close to the limit seat (206), and two clamping grooves (207) are symmetrically provided on the side wall of the limit seat (206) for the second protrusions (105) to be clamped.

2. The four-hole flange positioning device for a muffler according to claim 1, wherein: A first partition (107) is fixedly provided on the inner side wall of the housing (101), a plurality of hole grooves (106) are provided at one end of the second protrusion (105) penetrating through the first partition (107), and a communication pipe (108) is inserted above the first partition (107) close to the hole grooves (106).

3. The four-hole flange positioning device for a muffler according to claim 2, characterized in that: A second partition (109) is fixedly provided on the inner side wall of the housing (101) close to the end of the intake pipe (102), an exhaust pipe (104) is inserted at the other end of the housing (101), and one end of the exhaust pipe (104) penetrates through the housing (101), the second partition (109) and the first partition (107) in sequence.

4. The positioning device for the four-hole flange of a muffler according to claim 3, characterized in that: Two first protrusions (103) are symmetrically and fixedly provided at the end of the intake pipe (102) close to the housing (101), the first protrusions (103) are perpendicular to the side wall of the housing (101), and the two first protrusions (103) and the second protrusions (105) are located at the same horizontal position in sequence.

5. A four-hole flange positioning device for a muffler according to claim 1, characterized in that: A groove (203) is provided on the side wall of the flange plate (201) away from the housing (101), and the groove (203) is communicated with the slot (202).

6. The positioning device for the four-hole flange of a muffler according to claim 1, wherein: A friction surface (205) is engraved at the surface position of the flange plate (201) close to the groove (203), and the friction surface (205) is in a concentric circle structure.

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