Muffler patch

Abstract

The utility model discloses a muffler patch, which relates to the technical field of automobile accessories. It includes a patch base and an intake pipe sleeve; the intake pipe sleeve is a sleeve that is small at the top and large at the bottom, and the large end is connected to the patch base; the bottom surface of the patch base is an arc surface that matches the R-angle arc surface of the muffler cylinder, and the projection width L1 of the bottom surface of the patch base is equal to the projection width L2 of the R-angle arc surface of the cylinder, and the edges of the two are flat when welded. The utility model can solve the problem that the weld at the patch patch of the existing patch patch is too far away from the arc edge of the cylinder, the supporting force is insufficient, and it is easy to cause the cylinder to sag under the condition of thermal expansion and contraction, resulting in defective products.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a new type of patch patch used on the surface of a cylinder body of a rear muffler of an automobile. Background Art

[0002] In order to reduce noise, it is necessary to make an opening on the surface of the rear muffler cylinder to allow air to enter the muffler. Figure 1 A muffler cylinder as shown, the surface of the muffler cylinder 1 is provided with an air inlet 2 at the cylinder R angle arc surface 5, as shown in FIG. Figure 2 As shown in (a) and (b), after the air inlet 2 of the cylinder is inserted into the air inlet 3, in order to achieve the purpose of sealing and stable sealing, the air inlet 3 is inserted into the air inlet 2 and then the mouth of a patch 4 is matched with the air inlet mouth and installed, and the patch and the cylinder are welded and sealed by a robot. The existing patch has the problem that the weld at the patch is too far away from the arc edge of the cylinder, such as Figure 2 As shown in (a) and (b) in the longitudinal direction, the arc edges are too far away and the supporting force is insufficient. Under the condition of thermal expansion and contraction, it is easy to cause the cylinder to sag, resulting in defective products. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a muffler patch, which can solve the problem that the weld at the patch is too far away from the arc edge of the cylinder, the supporting force is insufficient, and the cylinder is easily dented under the condition of thermal expansion and contraction, resulting in defective products.

[0004] In order to solve the above problems, the technical solution of the utility model is: this muffler patch patch includes a patch base and an intake pipe sleeve; the intake pipe sleeve is a sleeve that is small at the top and large at the bottom, and the large end is connected to the patch base; the bottom surface of the patch base is an arc surface that matches the R-angle arc surface of the muffler cylinder, and the projection width L1 of the bottom surface of the patch base is equal to the projection width L2 of the R-angle arc surface of the cylinder, and the edges of the two are flat when welded.

[0005] In the above technical solution, a more specific solution is: the inner diameter of the air intake pipe sleeve matches the air intake pipe, and the air intake pipe is inserted into the air intake pipe sleeve and the air inlet of the cylinder and then connected to the air intake pipe sleeve.

[0006] Further: the projection width L1 of the bottom surface of the patch base is 65 mm.

[0007] Further: The length of the patch base is 116 mm.

[0008] Further: the arc radius of the longitudinal section of the patch base is 57 mm.

[0009] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0010] The width of the patch patch of the utility model is equal to the R angle of the cylinder, which is smaller than the traditional patch patch and is shortened by 3-13mm. The welding position of the patch patch is limited to the R angle of the cylinder, which not only saves costs but also increases the supporting force of the cylinder, and solves the problem of cylinder dents easily caused by thermal expansion and contraction, resulting in defective products. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the position of the air inlet on the muffler cylinder;

[0012] Figure 2 It is a schematic diagram of the existing patch patch on the muffler cylinder and the intake pipe at the air inlet;

[0013] Figure 3 It is a main schematic diagram of the utility model;

[0014] Figure 4 It is a top view schematic diagram of the utility model;

[0015] Figure 5 yes Figure 4 The schematic cross-section diagram along the AA section line;

[0016] Figure 6 It is a schematic diagram of the utility model being combined with the air intake pipe at the air intake port on the muffler cylinder.

[0017] The numbers in the figure are as follows: 1, muffler cylinder, 2, cylinder air inlet, 3, air intake pipe, 4, patch, 4-1, patch base, 4-2, air intake pipe sleeve, 5- cylinder R-angle arc surface. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 3 , Figure 4 and Figure 5 The muffler patch comprises a patch base 4-1 and an air intake pipe sleeve 4-2. The air intake pipe sleeve 4-2 is a sleeve that is small at the top and large at the bottom, and is connected with the patch base 4-1.

[0020] The bottom surface of the patch base 4-1 is an arc surface that matches the R-angle arc surface 5 of the cylinder. The projection width L1 of the bottom surface of the patch base 4-1 is equal to the projection width L2 of the R-angle arc surface 5 of the cylinder. When the two are welded, the edges are flat. Figure 6On both sides of the length direction shown in (c) and (d), the welds are on the arc edges of the cylinder, which have stronger supporting force and are not easy to cause the cylinder to dent due to thermal expansion and contraction, thus avoiding the production of defective products.

[0021] The inner diameter of the air intake sleeve 4-2 matches the air intake pipe 3. The air intake pipe 3 is inserted into the air intake sleeve 4-2 and the cylinder air inlet 2 and then welded to the air intake sleeve 4-2. Figure 6 (c) and (d).

[0022] In this embodiment, the bottom projection width L1 of the patch base 4-1 is 65 mm, the length of the patch base 4-1 is 116 mm, the arc radius of the longitudinal section of the patch base 4-1 is 57 mm, and the remaining dimensions are shown in FIG. Figure 3 , Figure 4 and Figure 5 shown.

Claims

1. A muffler patch, characterized in that: The invention comprises a patch base (4-1) and an air intake pipe sleeve (4-2); the air intake pipe sleeve (4-2) is a sleeve that is small at the top and large at the bottom, and the large end is connected to the patch base (4-1); the bottom surface of the patch base (4-1) is an arc surface that matches the cylinder R-angle arc surface (5) on the muffler cylinder (1); the projection width L1 of the bottom surface of the patch base (4-1) is equal to the projection width L2 of the cylinder R-angle arc surface (5), and the edges of the two are flush when welded.

2. The muffler patch according to claim 1, characterized in that: The inner diameter of the air intake pipe sleeve (4-2) matches that of the air intake pipe (3); the air intake pipe (3) is inserted into the air intake pipe sleeve (4-2) and the cylinder air inlet (2) and then connected to the air intake pipe sleeve (4-2).

3. The muffler patch according to claim 1 or 2, characterized in that: The bottom projection width L1 of the patch base (4-1) is 65 mm.

4. The muffler patch according to claim 3, characterized in that: The length of the patch base (4-1) is 116 mm.

5. The muffler patch according to claim 4, characterized in that: The arc radius of the longitudinal section of the patch base (4-1) is 57 mm.

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