Automobile engine exhaust system silencer flange

Abstract

The utility model discloses a silencer flange of an automobile engine exhaust system, which relates to the technical field of connecting flanges and comprises a flange body, through holes are arranged on two sides of the front of the flange body, bolts are movably inserted into the inner sides of the through holes, a clamping ring is arranged in the middle of each bolt, the top end of each clamping ring is fixedly connected with a connecting rod, and the connecting rod is fixedly connected with the flange body. A lantern ring is fixedly connected to the top end of the connecting rod, an inner concave hole is formed in the middle of the front face of the flange body, an inserting ring is fixedly connected to the inner wall of the inner concave hole, and a rubber ring and a magnetic attraction block are arranged on the two sides of the inserting ring and the two sides of the inner concave hole respectively. According to the utility model, a series of structures are arranged, so that the stability of the flange is kept when the flange is welded with the port of the silencer, the time consumed when the flange is welded on the port of the silencer is saved, and the two flanges on the silencer and the exhaust pipe are not easy to slide relatively when being butted; and bolts can penetrate through the through holes in the two flanges to tighten and fix the flanges.

Description

Technical Field

[0001] The utility model relates to the technical field of connecting flanges, in particular to a muffler flange for an exhaust system of an automobile engine. Background Art

[0002] The muffler of a car's exhaust pipe is a key component for reducing noise during driving. Since the muffler and the exhaust pipe are separate and independent structures, they need to be installed and fixed to the end of the car's engine exhaust system through the corresponding connecting flange before use to reduce the noise generated by the engine exhaust system during exhaust.

[0003] The flange of the existing automobile engine exhaust system muffler is connected to the muffler port by welding. However, since the surface of the flange is relatively smooth and flat and there is no connection structure with the muffler port, the flange cannot remain stable when welded to the muffler intake pipe, resulting in a cumbersome and time-consuming process of welding the flange to the muffler port. In addition, after the flange is welded to the muffler, it must be docked with the flange on the exhaust pipe. Since the flange on the exhaust pipe and the flange of the muffler port have the same flat end faces, the two flanges are prone to relative sliding when docked with bolts, which is not conducive to the bolts passing through the through holes on the two flanges to tighten and fix the flanges. Utility Model Content

[0004] The purpose of the utility model is to provide a muffler flange for an automobile engine exhaust system to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a muffler flange for an automobile engine exhaust system, comprising a flange body, through holes being opened on both sides of the front face of the flange body, bolts being movably inserted through the inner sides of the through holes, a retaining ring being provided in the middle of the bolt, a connecting rod being fixedly connected to the top of the retaining ring, a sleeve being fixedly connected to the top of the connecting rod, an inner concave hole being opened in the middle of the front face of the flange body, an insert ring being fixedly connected to the inner wall of the inner concave hole, and rubber rings and magnetic blocks being provided on both sides of the insert ring and the inner concave hole, respectively.

[0006] Preferably, both the front and back sides of the flange body are provided with embedding grooves, and the magnetic block is fixed to the middle part of the inner side of the embedding grooves.

[0007] Preferably, the rubber ring is sleeved on the outside of the magnetic block, and the rubber ring is embedded in the inner wall of the embedding groove.

[0008] Preferably, the insert ring is movably connected to the inner concave hole on the other flange body through the flange body.

[0009] Preferably, a nut is provided on the movable thread sleeve of the end of the bolt, and the retaining ring is movably connected to the bolt.

[0010] Preferably, the collar is movably connected to the bolt via a connecting rod, and the center of the collar and the center of the inner concave hole are located on the same straight line.

[0011] Preferably, the number of the clamping ring and the number of the connecting rod are two respectively, and the two clamping rings and the two connecting rods are symmetrically arranged on both sides of the ring.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The muffler flange of the automobile engine exhaust system, through the clamping ring, connecting rod and collar, can cooperate with the clamping ring on the bolt and the collar on the muffler port when the flange is welded to the muffler port, so that the flange can be pre-fixed and connected to the muffler port via the clamping ring and collar, thereby improving the stability of the flange when welding to the muffler port, thereby saving the time consumed in welding the flange to the muffler port.

[0014] 2. The muffler flange of the automobile engine exhaust system is connected to the exhaust pipe flange by means of a clamping ring, an elastic ring and a magnetic block. The clamping ring is embedded in the inner concave hole for connection, and then the flange is fixed by the magnetic force generated by the magnetic block. At the same time, the friction resistance generated by the elastic ring during the fitting makes it difficult for the two flanges to slide relative to each other when docked, which makes it easier for bolts to pass through the through holes on the two flanges and tighten and fix the flanges. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the collar and connecting rod of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the rubber ring and magnetic block of the utility model;

[0018] Figure 4 This is a schematic diagram of the insert ring and inner concave hole structure of the utility model.

[0019] In the figure: 1. Flange body; 2. Magnetic block; 3. Rubber ring; 4. Insert ring; 5. Bolt; 6. Snap ring; 7. Nut; 8. Connecting rod; 9. Ring; 10. Through hole; 11. Groove; 12. Inner recessed hole. DETAILED DESCRIPTION

[0020] The following will be combined with the 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.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1 to 4 As shown, the muffler flange of the automobile engine exhaust system in this embodiment includes a flange body 1, through holes 10 are opened on both sides of the front of the flange body 1, bolts 5 are movably inserted into the inner side of the through hole 10, a snap ring 6 is provided in the middle of the bolt 5, the top of the snap ring 6 is fixedly connected to the connecting rod 8, the top of the connecting rod 8 is fixedly connected to the collar 9, an inner concave hole 12 is opened in the middle of the front of the flange body 1, an insert ring 4 is fixedly connected to the inner wall of the inner concave hole 12, and a rubber ring 3 and a magnetic block 2 are respectively provided on both sides of the insert ring 4 and the inner concave hole 12.

[0024] Specifically, the flange body 1 is an integral blanking structure with a high hardness. The inner diameter of the through hole 10 is larger than the outer diameter of the bolt 5, so that the bolt 5 can pass through the through hole 10 smoothly, thereby realizing the locking of the flange by the bolt 5 and the nut 7. The bolt 5 and the flange body 1 are detachable structures. The inner diameter of the clamping ring 6 is larger than the outer diameter of the bolt 5, so that the clamping ring 6 can pass through the bolt 5 and be connected to the flange via the bolt 5. The function of the connecting rod 8 is to connect the clamping ring 6 with the collar 9. The inner diameter of the collar 9 is adapted to the outer diameter of the muffler port pipe, so that the collar 9 can be tightened before the method The flange is sleeved on the port of the muffler, which is beneficial for the flange to maintain better stability when welding with the muffler port. The inner diameter of the inner recessed hole 12 is adapted to the outer diameter of the insert ring 4, so that when the two flanges are docked, the insert ring 4 can be smoothly inserted into the inner recessed hole 12, thereby facilitating the docking of the two flanges. The surface of the rubber ring 3 is rough, which can increase the friction coefficient of the flange contact surface and reduce the probability of relative sliding of the flanges when docking, thereby increasing the stability of the two flanges when docking and facilitating the bolt 5 to pass through the through hole 10 to lock the flanges.

[0025] Furthermore, the front and back sides of the flange body 1 are provided with embedding grooves 11, and the magnetic block 2 is fixed in the middle of the inner side of the embedding groove 11. The function of the embedding groove 11 is to enable the rubber ring 3 to be embedded in the flange body 1, so that the side of the rubber ring 3 can be flush with the side of the flange body 1, thereby reducing the situation where the rubber ring 3 is raised when the two flanges are connected and a gap is generated.

[0026] Furthermore, the rubber ring 3 is sleeved on the outside of the magnetic block 2, and the rubber ring 3 is embedded in the inner wall of the embedding groove 11. The function of the magnetic block 2 is to enable the two flanges to be adsorbed and fixed in advance by the magnetic force generated by the magnetic block 2 when docking, so that the two flanges can maintain a relatively static state when docking, thereby facilitating the bolt 5 to pass through the through holes 10 on the two flanges at the same time.

[0027] Furthermore, the insert ring 4 is movably connected to the inner recessed hole 12 on the other flange body 1 through the flange body 1. The outer wall of the insert ring 4 is rough, so that when the insert ring 4 is inserted into the inner recessed hole 12, it is not easy to rotate relative to the inner recessed hole 12, thereby helping the two flanges to maintain better stability when docking.

[0028] Furthermore, a nut 7 is provided on the movable thread sleeve at the end of the bolt 5, and a retaining ring 6 is movably connected to the bolt 5. The function of the nut 7 is to lock the end of the bolt 5 so that the retaining ring 6 on the bolt 5 can be locked on the bolt 5, thereby facilitating the flange body 1 to be fixed to the port on the muffler through the bolt 5, the retaining ring 6 and the sleeve ring 9, so as to facilitate the subsequent welding of the flange on the port of the muffler.

[0029] Furthermore, the collar 9 is movably connected to the bolt 5 through the connecting rod 8, and the center of the collar 9 is located on the same straight line as the center of the inner recessed hole 12. The collar 9 serves to connect the flange and the muffler port in advance, so that the flange is not prone to shaking during welding, thereby saving the time required for welding the flange to the muffler port.

[0030] Furthermore, there are two snap rings 6 and two connecting rods 8, which are symmetrically arranged on both sides of the collar 9, so that the force on the collar 9 can be kept balanced, thereby facilitating the flange to be connected to the port of the muffler through the collar 9 first.

[0031] The method of using this embodiment is as follows: when it is necessary to weld the muffler flange of the automobile engine exhaust system to the intake pipe port of the muffler, the collar 9 on the flange can be first put on the outer wall of the muffler intake pipe, so that the flange is fixed to the port of the muffler intake pipe at the same time through the collar 9 and the connecting rod 8 connected to the collar 9, as well as the clamping ring 6 and the bolt 5. Then the bolt 5 can be tightened so that the clamping ring 6 is tightly attached to one side wall of the flange and fixed, so that the collar 9 and the flange are in a relatively static state, and then one side wall of the flange is slid along the outer wall of the muffler intake pipe through the collar 9 until one side wall of the flange is tightly attached to the port of the muffler intake pipe, and the flange can be welded to the port of the muffler intake pipe. When it is necessary to dock the welded flange on the muffler with the flange welded on the end of the exhaust pipe of the automobile engine exhaust system, the bolt 5 and the nut 7 can be separated first, and then pulled out from the through hole 10 of the flange, and then the flange on the muffler and the flange on the exhaust pipe are docked. At this time, the magnetic blocks 2 on the contact surfaces of the two flanges will be adsorbed and connected by magnetic force, and the rubber rings 3 on the outside of the magnetic blocks 2 will be pressed against each other, and the insert ring 4 on the muffler flange will be inserted into the inner concave hole 12 of the flange on the exhaust pipe, so that the two flanges remain relatively stationary. Finally, the bolt 5 can be passed through the through holes 10 on the muffler flange and the exhaust pipe flange at the same time, and the nut 7 can be put on the end of the bolt 5 and tightened.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A muffler flange for an automobile engine exhaust system, comprising a flange body (1), characterized in that: Through holes (10) are provided on both sides of the front face of the flange body (1), bolts (5) are movably inserted into the inner sides of the through holes (10), a snap ring (6) is provided in the middle of the bolts (5), the top end of the snap ring (6) is fixedly connected to a connecting rod (8), the top end of the connecting rod (8) is fixedly connected to a sleeve ring (9), an inner concave hole (12) is provided in the middle of the front face of the flange body (1), an insert ring (4) is fixedly connected to the inner wall of the inner concave hole (12), and rubber rings (3) and magnetic blocks (2) are provided on both sides of the insert ring (4) and the inner concave hole (12), respectively.

2. The muffler flange of an automobile engine exhaust system according to claim 1, characterized in that: The front and back sides of the flange body (1) are both provided with embedding grooves (11), and the magnetic block (2) is fixed to the middle portion of the inner side of the embedding groove (11).

3. The automobile engine exhaust system muffler flange according to claim 2, characterized in that: The rubber ring (3) is sleeved on the outer side of the magnetic block (2), and the rubber ring (3) is embedded in the inner wall of the embedding groove (11).

4. The automobile engine exhaust system muffler flange according to claim 1, characterized in that: The insert ring (4) is movably connected through the inner recessed hole (12) on the other flange body (1) via the flange body (1).

5. The automobile engine exhaust system muffler flange according to claim 1, characterized in that: The end of the bolt (5) is movably threaded with a nut (7), and the clamping ring (6) is movably connected to the bolt (5).

6. The automobile engine exhaust system muffler flange according to claim 1, characterized in that: The collar (9) is movably connected to the bolt (5) via a connecting rod (8), and the center of the collar (9) and the center of the inner concave hole (12) are located on the same straight line.

7. The automobile engine exhaust system muffler flange according to claim 1, characterized in that: The number of the clamping ring (6) and the number of the connecting rod (8) are two respectively, and the two clamping rings (6) and the two connecting rods (8) are symmetrically arranged on both sides of the collar (9).

Images