Internal assembly and silencer

Abstract

An interior assembly includes a first baffle and a bulkhead. The first baffle is provided with a first slotted hole, and the first slotted hole comprises a first surface and a second surface opposite to the first surface. The partition plate comprises a first convex piece protruding out of the edge of one side of the partition plate, the first convex piece comprises a first main body part and a first convex hull protruding out of the first main body part, and the first convex hull is provided with an arc-shaped first outer surface. The first protruding piece is at least partially inserted into the first groove hole, so that the first outer surface of the first convex hull abuts against the first surface of the first groove hole. And the first lug is welded and fixed with the first baffle plate. According to the arrangement, the gap between the first main body part and the first surface of the first groove hole and / or the gap between the first main body part and the second surface of the first groove hole falls into the preset welding gap range, and therefore welding implementation is facilitated. The utility model further discloses a silencer with the internal component.

Description

TECHNICAL FIELD

[0001] The utility model relates to an internal component and muffler belong to engine exhaust system technical field. BACKGROUND

[0002] The muffler in the prior art generally comprises a shell and an internal component installed in the shell. The internal component comprises a baffle and a partition plate, and the baffle and the partition plate are welded together.

[0003] However, with the trend of low cost of the muffler, the wall thickness of the baffle and the partition plate is being thinned, so that the parts are prone to deformation during transportation, causing the tab on the partition plate to be difficult to cooperate with the slot hole on the baffle. In order to facilitate assembly, the slot hole needs to be raised; however, after the slot hole is raised, the gap between the tab on the partition plate and the baffle after the tab is inserted into the slot hole will be increased, which is not conducive to subsequent welding. SUMMARY

[0004] The utility model aims at providing an internal component with an improved structure and a muffler with the internal component.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an internal component for a muffler of an exhaust system, the internal component comprising:

[0006] a first baffle provided with a first slot hole, the first slot hole comprising a first surface and a second surface opposite to the first surface; and

[0007] a partition plate comprising a first tab protruding from one side edge of the partition plate, the first tab comprising a first main body portion and a first convex portion protruding from the first main body portion, the first convex portion having an arc-shaped first outer surface, the first tab being at least partially inserted into the first slot hole such that the first outer surface of the first convex portion abuts against the first surface of the first slot hole, and the first tab being welded to the first baffle.

[0008] As a further improved technical scheme of the utility model, the first outer surface of the first convex portion abuts against the first surface of the first slot hole, so as to make the gap between the first main body portion and the first surface of the first slot hole and / or the gap between the first main body portion and the second surface of the first slot hole fall within a predetermined welding gap range.

[0009] As a further improved technical scheme of the utility model, the first tab at least partially protrudes out of the first slot hole.

[0010] As a further improved technical scheme of the utility model, the first convex portion is integrally stamped from the first main body portion.

[0011] As a further improved technical scheme of the utility model, the first tab includes a second convex hull protruding from the first main body part, the second convex hull has an arc-shaped second outer surface, and the second outer surface of the second convex hull abuts against the first surface of the first slot hole.

[0012] As a further improved technical scheme of the utility model, the second convex hull is arranged at intervals from the first tab.

[0013] As a further improved technical scheme of the utility model, the second convex hull and the first tab are located on the same side of the first tab.

[0014] As a further improved technical scheme of the utility model, the second convex hull and the first tab protrude from the first main body part to the same height.

[0015] As a further improved technical scheme of the utility model, the internal component further includes a second baffle, the second baffle is provided with a second slot hole, the second slot hole includes a third surface and a fourth surface opposite to the third surface;

[0016] The baffle includes a second tab protruding from the other side edge thereof, the second tab includes a second main body part and a third convex hull protruding from the second main body part, the third convex hull has an arc-shaped third outer surface, the second tab is at least partially inserted into the second slot hole, so that the third outer surface of the third convex hull abuts against the third surface of the second slot hole, and the second tab is welded and fixed to the second baffle.

[0017] The utility model further discloses a muffler which comprises a shell and an internal component fixedly installed in the shell, the internal component is the aforementioned internal component, and the first baffle is welded and fixed to the inner surface of the shell.

[0018] Compared with the prior art, the internal component and the muffler of the utility model include a first baffle and a baffle, wherein the baffle includes a first tab protruding from one side edge thereof, the first tab includes a first main body part and a first convex hull protruding from the first main body part, the first convex hull has an arc-shaped first outer surface, and the first tab is at least partially inserted into the first slot hole, so that the first outer surface of the first convex hull abuts against the first surface of the first slot hole. In this way, the gap between the first main body part and the first surface of the first slot hole and / or the gap between the first main body part and the second surface of the first slot hole falls within a predetermined welding gap range, thereby facilitating the welding and fixing of the first tab to the first baffle. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1This is a perspective view of one embodiment of the silencer of this utility model, in which part of the housing is not shown.

[0020] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the internal components.

[0021] Figure 3 yes Figure 2 A magnified view of part A circled in the middle.

[0022] Figure 4 It is along Figure 3 A cross-sectional view of the BB line.

[0023] Figure 5 yes Figure 2 A three-dimensional schematic diagram of the first baffle.

[0024] Figure 6 yes Figure 5 A magnified view of part C circled in the middle.

[0025] Figure 7 yes Figure 2 A three-dimensional schematic diagram of the partition.

[0026] Figure 8 yes Figure 7 A magnified view of part D circled in the middle. Detailed Implementation

[0027] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Where several specific embodiments exist, features in these embodiments can be combined with each other without conflict. When the description relates to the drawings, unless otherwise stated, the same numbers or symbols in different drawings represent the same or similar elements. The content described in the following exemplary embodiments does not represent all embodiments of this utility model; rather, they are merely examples of products consistent with this utility model and as described in the claims.

[0028] The terminology used in this invention is for the purpose of describing specific embodiments only and is not intended to limit the scope of protection of this invention. It should be understood that terms such as "first," "second," and similar words used in the specification and claims of this invention do not indicate any order, quantity, or importance, but are merely used to distinguish the features.

[0029] Please refer to Figures 1 to 8 As shown, this utility model discloses a muffler 100 for an exhaust system, which includes a housing 1 and an internal component 2 installed and fixed in the housing 1.

[0030] The inner component 2 comprises a first baffle 21, a second baffle 22 and a partition 23 between the first baffle 21 and the second baffle 22. In an embodiment of the present application, the partition 23 is welded and fixed with the first baffle 21 and the second baffle 22 respectively to form an integral whole.

[0031] In the embodiment shown in the present application, the first baffle 21 comprises a first plate body part 211 and a first flange part 212 bent from the outer edge of the first plate body part 211, and the first flange part 212 is welded and fixed on the inner surface of the shell 1.

[0032] The first plate body part 211 is provided with a plurality of first slot holes 213. Each first slot hole 213 is flat, i.e. the width of the first slot hole 213 is greater than its height. The first slot hole 213 comprises a first surface 2131 and a second surface 2132 opposite to the first surface 2131.

[0033] Similarly, in the embodiment shown in the present application, the second baffle 22 comprises a second plate body part 221 and a second flange part 222 bent from the outer edge of the second plate body part 221, and the second flange part 222 is welded and fixed on the inner surface of the shell 1.

[0034] The second plate body part 221 is provided with a plurality of second slot holes. Each second slot hole is flat, i.e. the width of the second slot hole is greater than its height. The second slot hole comprises a third surface and a fourth surface opposite to the third surface.

[0035] In the embodiment shown in the present application, the bending directions of the first flange part 212 and the second flange part 222 are opposite.

[0036] The partition 23 is generally annular, comprising a plurality of first tabs 231 protruding from one side edge thereof and a plurality of second tabs 232 protruding from the other side edge thereof.

[0037] Each first tab 231 comprises a first main body part 2310, a first convex part 2311 protruding from the first main body part 2310 and a second convex part 2312 protruding from the first main body part 2310. In the embodiment shown in the present application, the first convex part 2311 and the second convex part 2312 are integrally punched from the first main body part 2310. The second convex part 2312 is arranged in a spaced manner with the first convex part 2311. The second convex part 2312 and the first convex part 2311 are located on the same side of the first tab 231. Preferably, the second convex part 2312 and the first convex part 2311 protrude from the first main body part 2310 by the same height.

[0038] Each second tab 232 comprises a second body portion 2320, a third protrusion 2321 protruding from the second body portion 2320, and a fourth protrusion 2322 protruding from the second body portion 2320. In the embodiment shown in the drawings of the present application, the third protrusion 2321 and the fourth protrusion 2322 are integrally stamped from the second body portion 2320. The fourth protrusion 2322 is spaced apart from the third protrusion 2321. The fourth protrusion 2322 and the third protrusion 2321 are located on the same side of the second tab 232. Preferably, the fourth protrusion 2322 and the third protrusion 2321 protrude from the second body portion 2320 to the same height.

[0039] In the embodiment shown in the drawings of the present application, the first protrusion 2311 has an arc-shaped first outer surface 2313, and the second protrusion 2312 has an arc-shaped second outer surface 2314. The third protrusion 2321 has an arc-shaped third outer surface, and the fourth protrusion 2322 has an arc-shaped fourth outer surface.

[0040] The first tab 231 is at least partially inserted into the first slot hole 213, so that the first outer surface 2313 of the first protrusion 2311 abuts against the first surface 2131 of the first slot hole 213, and the second outer surface 2314 of the second protrusion 2312 abuts against the first surface 2131 of the first slot hole 213. The resulting force pushes the first tab 231 towards the second surface 2132 of the first slot hole 213. In the embodiment shown in the drawings of the present application, the first tab 231 at least partially protrudes out of the first slot hole 213.

[0041] Specifically, the first outer surface 2313 of the first protrusion 2311 abuts against the first surface 2131 of the first slot hole 213, and the second outer surface 2314 of the second protrusion 2312 abuts against the first surface 2131 of the first slot hole 213, so as to cause the gap between the first body portion 2310 and the first surface 2131 of the first slot hole 213 and / or the gap between the first body portion 2310 and the second surface 2314 of the first slot hole 213 to fall within a predetermined welding gap range, thereby facilitating welding to be performed to weld and fix the first tab 231 to the first baffle 21.

[0042] Similarly, the second tab 232 is at least partially inserted into the second slot hole, so that the third outer surface of the third protrusion 2321 abuts against the third surface of the second slot hole, and the second tab 232 is welded and fixed to the second baffle 22.

[0043] Compared with the prior art, the first tab 231 comprises a first body part 2310 and a first convex envelope 2311 protruding from the first body part 2310, the first convex envelope 2311 has an arc-shaped first outer surface 2313, the first tab 231 is at least partially inserted into the first slot hole 213, and the first outer surface 2313 of the first convex envelope 2311 abuts against the first surface 2131 of the first slot hole 213. In this way, the gap between the first body part 2310 and the first surface 2131 of the first slot hole 213 and / or the gap between the first body part 2310 and the second surface 2132 of the first slot hole 213 falls within a predetermined welding gap range, thereby facilitating the welding and fixing of the first tab 231 and the first baffle 21.

[0044] The second tab 232 has the same beneficial effects as the first tab 231, and the utility model will not repeat the description here.

[0045] The above embodiments are only used to illustrate the utility model and not to limit the technical solutions described in the utility model. The understanding of the specification should be based on the technical personnel in the technical field, although the utility model has been described in detail with reference to the above embodiments, but the ordinary technical personnel in the art should understand that the technical personnel in the technical field can still modify or equivalently replace the utility model, and all technical solutions and improvements that do not deviate from the spirit and scope of the utility model should be covered in the scope of claims of the utility model.

Claims

1. An inner assembly for use in a muffler of an exhaust system, characterized by, The inner assembly comprises: a first baffle provided with a first slot hole, the first slot hole comprising a first surface and a second surface opposite to the first surface; and a partition plate comprising a first tab protruding from one side edge thereof, the first tab comprising a first main body portion and a first convexity protruding from the first main body portion, the first convexity having an arc-shaped first outer surface, the first tab being at least partially inserted into the first slot hole such that the first outer surface of the first convexity abuts against the first surface of the first slot hole, and the first tab being welded and fixed to the first baffle.

2. The inner assembly of claim 1, wherein: The first outer surface of the first convexity abuts against the first surface of the first slot hole so as to cause a gap between the first main body portion and the first surface of the first slot hole and / or a gap between the first main body portion and the second surface of the first slot hole to fall within a predetermined welding gap range.

3. The inner assembly of claim 1, wherein: The first tab at least partially penetrates the first slot hole.

4. The inner assembly of claim 1, wherein: The first convexity is integrally punched from the first main body portion.

5. The inner assembly of claim 1, wherein: The first tab comprises a second convexity protruding from the first main body portion, the second convexity having an arc-shaped second outer surface, and the second outer surface of the second convexity abuts against the first surface of the first slot hole.

6. The inner assembly of claim 5, wherein: The second convexity is arranged in a spaced-apart manner from the first convexity.

7. The inner assembly of claim 5, wherein: The second convexity and the first convexity are located on the same side of the first tab.

8. The inner assembly of claim 5, wherein: The second convexity and the first convexity protrude from the first main body portion to the same height.

9. The inner assembly of claim 1, wherein: The inner assembly further comprises a second baffle provided with a second slot hole, the second slot hole comprising a third surface and a fourth surface opposite to the third surface; The partition plate comprises a second tab protruding from the other side edge thereof, the second tab comprising a second main body portion and a third convexity protruding from the second main body portion, the third convexity having an arc-shaped third outer surface, the second tab being at least partially inserted into the second slot hole such that the third outer surface of the third convexity abuts against the third surface of the second slot hole, and the second tab being welded and fixed to the second baffle.

10. A muffler comprising a housing and an inner assembly mounted fixedly in said housing, characterized by The inner assembly is as claimed in any one of claims 1 to 9, and the first baffle is welded and fixed to the inner surface of the shell.

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