Universal engine silencer assembly

Abstract

The utility model discloses a general engine silencer assembly which comprises a silencer and an outer cover arranged on the outer side of the silencer in a covering mode, a heat dissipation gap is formed between the outer cover and the silencer, and a supporting piece is connected between the outer cover and the silencer. The supporting piece comprises a first supporting part making contact with the silencer face and a second supporting part making contact with the outer cover face, a plate-shaped third supporting part is connected between the first supporting part and the second supporting part, and the plate face of the third supporting part is arranged in the vertical direction. According to the scheme, the problem that in the prior art, an outer cover of a silencer assembly is prone to inclining or falling off is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to general engine muffler assembly. BACKGROUND

[0002] General engine muffler assembly is a device for reducing the exhaust noise of general engine. The muffler assembly comprises a muffler and an outer cover covering the outer side of the muffler, the outer cover is connected with the muffler through a support, and a certain gap is formed between the outer cover and the outer wall of the muffler, so that the situation that the user is directly contacted with the muffler and scalded can be reduced.

[0003] Chinese patent document CN107165722B discloses a general gasoline engine muffler outer cover, which comprises a polygonal body, characterized in that a plurality of hollow holes are arranged on the polygonal body, the polygonal body is one-time stamping forming, the hollow holes are connected by semicylindrical connecting ribs, the semicylindrical connecting ribs have a U-shaped cross-section outer contour arc surface, and the distance between the ridge line of the outer contour arc surface and the low end plane is greater than or equal to 3mm.

[0004] The above prior art scheme reduces the scalding area by setting the ridge line protruding from the low end plane, and improves the structural strength by adopting one-piece stamping forming. However, it is found in actual use that the prior art has the following disadvantages: 1. One-piece stamping forming is adopted, the process is complex, the material utilization rate is low, and the production cost is increased; 2. The part where the outer cover is connected with the muffler is prone to tearing and damage, thereby causing the outer cover to be skewed or detached. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a general engine muffler assembly to solve the problem that the outer cover of the muffler assembly in the prior art is prone to skewing or detachment.

[0006] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a general engine muffler assembly, which comprises a muffler and an outer cover covering the outer side of the muffler, a heat dissipation gap is arranged between the outer cover and the muffler, a support is connected between the outer cover and the muffler, the support comprises a first support part in contact with the surface of the muffler and a second support part in contact with the surface of the outer cover, a third support part in the form of a plate is connected between the first support part and the second support part, and the plate surface of the third support part is arranged vertically.

[0007] The beneficial effects of this basic solution are as follows: the first support part of the support member contacts the muffler surface, the second support part contacts the outer cover surface, and the plate surface of the plate-shaped third support part is set vertically, thereby giving the support member greater rigidity in the vertical direction. This makes it less likely for the outer cover and the muffler to rub against each other under the action of vibration or thermal expansion, reducing the problem of tearing at the connection between the outer cover or the muffler and the support member, which could lead to the outer cover tilting or falling off.

[0008] Preferably, the first support portion is a plate-shaped part that fits against the surface of the muffler, and the second support portion is a plate-shaped part that fits against the surface of the outer cover. This arrangement satisfies the requirements of surface contact between the first support portion and the muffler, and surface contact between the second support portion and the outer cover, while also simplifying the structure of both the first and second support portions, thereby facilitating the lightweighting of the support components.

[0009] Preferably, the first support portion, the second support portion, and the third support portion are integrally formed. This arrangement enhances the reliability of the support component, thereby ensuring its support effect between the muffler and the outer casing, and also facilitates the processing and forming of the support component.

[0010] Preferably, the first support portion and the second support portion are located on opposite sides of the plate surface of the third support portion. This arrangement minimizes mutual interference between the first and second support portions during their respective connection operations, thereby facilitating assembly.

[0011] Preferably, a cavity is formed between the support member and the outer cover. This arrangement creates a three-dimensional spatial structure between the support member and the outer cover, thereby enhancing the rigidity of the outer cover using the support member and improving its structural stability.

[0012] Preferably, the outer cover includes a first cover portion opposite to the circumferential side of the muffler and a second cover portion opposite to the top of the muffler, the first cover portion and the second cover portion being welded together. This arrangement allows the first and second cover portions to be processed and shaped separately before being welded together to form the outer cover, thereby reducing the processing difficulty of the outer cover, improving material utilization, and helping to reduce costs.

[0013] Preferably, the first cover has an integrally formed connecting portion that fits snugly against the muffler on the side of the muffler facing away from the support member, and the connecting portion is detachably connected to the muffler. This arrangement strengthens the rigidity of the first cover on the side with the connecting portion, thereby enhancing the structural stability of the outer cover.

[0014] Preferably, a connecting plate is provided on the side of the connecting portion facing away from the muffler. The connecting plate is welded to the first cover and the second cover respectively, and a heat insulation cavity is formed between the connecting plate and the connecting portion. This arrangement helps to further enhance the structural stability of the outer cover.

[0015] This utility model has the following beneficial effects:

[0016] 1. Compared with the prior art, the present invention has a first support part of the support member that contacts the muffler surface, a second support part that contacts the outer cover surface, and a plate-shaped third support part that is arranged vertically. This gives the support member greater rigidity in the vertical direction, making it less likely for the outer cover and the muffler to rub against each other under the action of vibration or thermal expansion. This reduces the problem of tearing at the connection between the outer cover or the muffler and the support member, which could lead to the outer cover tilting or falling off.

[0017] 2. The first support part, the second support part and the third support part of this utility model are all plate-shaped, which achieves lightweighting while ensuring the structural rigidity of the support component, thereby improving the reliability of the muffler assembly in a vibration environment.

[0018] 3. The outer cover of this utility model adopts a structure in which the first cover part and the second cover part are processed and formed separately and then welded together, which greatly reduces the processing difficulty of the outer cover and improves the material utilization rate of the outer cover. Compared with the structure of the outer cover being formed by integral stamping, the cost is greatly reduced and it is easy to promote and use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an embodiment of a universal engine muffler assembly according to the present invention;

[0020] Figure 2 for Figure 1 Exploded view;

[0021] Figure 3 This is a schematic diagram from another perspective of an embodiment of a universal engine muffler assembly according to the present invention;

[0022] Figure 4 for Figure 3 Exploded view;

[0023] Figure 5 for Figure 1 A schematic diagram of the C-view direction in the image;

[0024] Figure 6 for Figure 5 AA section view in the middle;

[0025] Figure 7 for Figure 3 A schematic diagram of the D-view direction in the image;

[0026] Figure 8 for Figure 7 BB section view in the middle. Detailed Implementation

[0027] The following detailed description illustrates the specific implementation method:

[0028] The reference numerals in the accompanying drawings include: outer cover 1, second cover 11, first cover 12, screw 2, muffler 3, support member 4, first support 41, third support 42, second support 43, connecting part 5, and connecting plate 6.

[0029] The basic implementation examples are as follows: Figures 1 to 8 As shown: A general-purpose engine muffler assembly includes a muffler 3 and an outer cover 1 covering the outside of the muffler 3, with a heat dissipation gap between the outer cover 1 and the muffler 3. A support member 4 connects the outer cover 1 and the muffler 3. The support member 4 includes a first support portion 41 in contact with the surface of the muffler 3 and a second support portion 43 in contact with the surface of the outer cover 1. A plate-shaped third support portion 42 connects the first support portion 41 and the second support portion 43, with the plate surface of the third support portion 42 arranged vertically.

[0030] In this embodiment, the first support portion 41 is a plate-shaped part that fits against the surface of the muffler 3, and the second support portion 43 is a plate-shaped part that fits against the surface of the outer cover 1. The first support portion 41, the second support portion 43, and the third support portion 42 are preferably integrally formed. For example, the first support portion 41, the second support portion 43, and the third support portion 42 can be formed by repeatedly bending a single plate-shaped piece. In this embodiment, the first support portion 41 and the second support portion 43 are located on opposite sides of the plate surface of the third support portion 42.

[0031] In this embodiment, each end of the first support portion 41 is connected to a second support portion 43 via a third support portion 42, thus making the entire support member 4 shaped like a trestle. A cavity is formed between the support member 4 and the outer cover 1. In this embodiment, the first support portion 41 is fixed to the muffler 3 by means of screws 2. The second support portion 43 is fixed to the outer cover 1 by means of screws 2. Of course, in other embodiments, the first support portion 41 and the muffler 3, and the second support portion 43 and the outer cover 1 can also be fixed by means of welding, riveting, etc.

[0032] In this embodiment, the outer cover 1 includes a first cover portion 12 opposite to the circumferential side of the muffler 3 and a second cover portion 11 opposite to the top of the muffler 3. The first cover portion 12 and the second cover portion 11 are welded together. This arrangement allows the first cover portion 12 and the second cover portion 11 to be separately manufactured and then welded together to form the outer cover 1, thereby reducing the manufacturing difficulty of the outer cover 1, improving material utilization, and reducing costs. The first cover portion 12 has an integrally formed connecting portion 5 on the side of the muffler 3 facing away from the support member 4, which fits snugly against the muffler 3. The connecting portion 5 is detachably connected to the muffler 3. In this embodiment, the connecting portion 5 is formed by bending the edge of the first cover portion 12. The detachable connection between the connecting portion 5 and the muffler 3 is preferably achieved using screws 2. In this embodiment, two connecting portions 5 are provided. A connecting plate 6 is provided on the side of the connecting portion 5 facing away from the muffler 3. The connecting plate 6 is welded to the first cover portion 12 and the second cover portion 11 respectively, and a heat insulation cavity is formed between the connecting plate 6 and the connecting portion 5.

[0033] By employing this utility model, it is less likely that the outer cover 1 of the muffler assembly 3 will rub against the muffler 3, thus preventing the outer cover 1 from tilting or falling off under the action of vibration or thermal expansion, thereby improving the structural stability of the muffler assembly 3. Moreover, the outer cover 1 is formed by separately processing the first cover part 12 and the second cover part 11 and then welding them together, which reduces production costs.

[0034] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics of the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A universal engine muffler assembly, comprising a muffler and an outer cover disposed outside the muffler, wherein a heat dissipation gap is provided between the outer cover and the muffler, and a support member is connected between the outer cover and the muffler, characterized in that: The support member includes a first support portion that contacts the surface of the muffler and a second support portion that contacts the surface of the outer cover. A plate-shaped third support portion is connected between the first support portion and the second support portion, and the plate surface of the third support portion is arranged vertically.

2. The universal engine muffler assembly according to claim 1, characterized in that: The first support part is a plate-shaped part that fits into the surface of the muffler, and the second support part is a plate-shaped part that fits into the surface of the outer cover.

3. A universal engine muffler assembly according to claim 2, characterized in that: The first support part, the second support part, and the third support part are integrally formed.

4. A universal engine muffler assembly according to claim 3, characterized in that: The first support and the second support are located on opposite sides of the plate surface of the third support.

5. A universal engine muffler assembly according to claim 4, characterized in that: A cavity is formed between the support member and the outer cover.

6. A universal engine muffler assembly according to any one of claims 1 to 5, characterized in that: The outer cover includes a first cover portion opposite to the circumferential side of the muffler and a second cover portion opposite to the top of the muffler, the first cover portion and the second cover portion being welded and fixed together.

7. A universal engine muffler assembly according to claim 6, characterized in that: The first cover has an integrally formed connecting part that fits with the muffler on the side of the muffler facing away from the support member, and the connecting part is detachably connected to the muffler.

8. A universal engine muffler assembly according to claim 7, characterized in that: A connecting plate is provided on the side of the connecting part facing away from the muffler. The connecting plate is welded to the first cover and the second cover respectively, and a heat insulation cavity is formed between the connecting plate and the connecting part.

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