Corrugated pipe connecting assembly of silencer

Abstract

The utility model is suitable for the technical field of power equipment, and provides a silencer corrugated pipe connecting assembly which comprises a first shell and a second shell which are arranged on an air inlet pipe of a silencer body and used for connecting and fixing a corrugated pipe body. The clamping plates are symmetrically arranged in the first shell and the second shell and are used for clamping the corrugated pipe main body and the air inlet pipe of the silencer main body; the first springs are arranged in the first shell and the second shell respectively and used for limiting the clamping plate, and the bottom ends of the first springs are fixedly connected with the clamping plate; and the limiting mechanism is arranged on the first shell and the second shell and is used for limiting. According to the silencer corrugated pipe connecting assembly, the problem that in the using process of an existing traditional silencer rigid connecting mode, disassembly is difficult is solved.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment technology, and in particular relates to a muffler bellows connection assembly. Background Technology

[0002] During operation, internal combustion engines generate high-intensity noise and vibration, which not only causes serious noise pollution to the surrounding environment but may also affect the service life and performance stability of the engine itself and its related components. As a key component for reducing exhaust noise from internal combustion engines, the reliability of its connection to the engine and its own structural stability are crucial.

[0003] Currently, traditional muffler connection methods mainly rely on rigid connections, with direct welding being one of the most common methods. During initial installation, rigid connections may meet certain strength requirements, allowing the muffler to work relatively stably with the internal combustion engine. However, as usage time increases and actual operating conditions change, the drawbacks of this connection method gradually become apparent. When the muffler needs replacement due to long-term exposure to high temperatures, corrosive gases, vibration fatigue, or other factors, the disassembly difficulties caused by rigid connections become a thorny issue. Because the welded joint forms a permanent fixed connection, disassembly often requires specialized cutting tools. This not only consumes a significant amount of time and labor but also easily damages the connection points of the internal combustion engine during disassembly, affecting the installation accuracy and reliability of subsequent new mufflers. Utility Model Content

[0004] This utility model provides a bellows connection assembly for a muffler, which aims to solve the problem of disassembly difficulties that occur during the use of traditional rigid connection methods for mufflers.

[0005] This utility model is implemented as follows: a muffler bellows connection assembly includes: a first housing and a second housing disposed on the muffler main body air inlet pipe for connecting and fixing the bellows main body; clamping plates symmetrically disposed in the first housing and the second housing for clamping the bellows main body and the muffler main body air inlet pipe; first springs respectively disposed in the first housing and the second housing for limiting the clamping plates, the bottom end of the first springs being fixedly connected to the clamping plates; and limiting mechanisms disposed on the first housing and the second housing for limiting the movement.

[0006] Preferably, the limiting mechanism includes: a plug plate symmetrically fixedly installed on the first housing, the plug plate having equidistant toothed grooves; a limiting block symmetrically fixedly installed on the second housing, the limiting block having a toothed block that can mesh with the toothed grooves; a slide rod slidably installed on the limiting block, one end of the slide rod being fixedly connected to the toothed block; and a second spring sleeved on the slide rod.

[0007] Preferably, both the first housing and the second housing are provided with assembly grooves, which are adapted to the air inlet pipes of the bellows body and the muffler body.

[0008] Preferably, the card plate is semi-circular, and has an arc-shaped groove on it that is adapted to the bellows body and the air intake pipe of the muffler body.

[0009] Preferably, the limiting block has a sliding hole that is adapted to the sliding rod, and a pull ring for pulling is fixedly installed on the sliding rod.

[0010] Preferably, both the first housing and the second housing are provided with mounting grooves, which are used to assemble the first spring and the retaining plate.

[0011] Preferably, the limiting block has an opening that is adapted to the second spring and the toothed block.

[0012] Preferably, both the first and second housings are made of metal, and a rubber pad for increasing friction is provided in the arc-shaped groove. The rubber pad is in contact with the outer wall of the bellows body and the air intake pipe of the muffler body.

[0013] Compared with related technologies, the muffler bellows connection assembly provided by this utility model has the following advantages:

[0014] The design, which allows for the separate operation of the first and second housings, solves the problem of difficult disassembly of traditional rigid connections, avoiding large-scale disassembly, saving disassembly time and labor costs, reducing the risk of damage to the internal combustion engine connection parts, and ensuring subsequent installation accuracy and connection reliability. For example, the operation is simple and quick when installing and replacing the bellows body. The cooperation between the clamping plate and the first spring provides a stable connection force while buffering external forces, allowing for some fine adjustments to avoid component damage. The symmetrical arrangement of the clamping plates ensures uniform force distribution, making the connection firm and reliable, improving the stability and reliability of the muffler connection, and extending the service life of the exhaust system. In the limiting mechanism, the toothed groove of the plug plate meshes with the toothed block of the limiting block, enhancing the connection firmness and resisting vibration and airflow impact. The sliding rod provides guiding support for the movement of the toothed block, facilitating disassembly and adjustment, improving maintainability and ease of operation. The second spring ensures tight meshing of the toothed block and automatic reset, enhancing connection reliability and stability, and extending the service life of the limiting mechanism. The precise fit between the assembly slot and the bellows body and the muffler body intake pipe reduces installation and adjustment time and difficulty, improves installation efficiency, and avoids problems such as loose connections and poor sealing. Attached Figure Description

[0015] Figure 1 A side view of a bellows connection assembly for a muffler provided by this utility model;

[0016] Figure 2 This is a side sectional view of the present invention.

[0017] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in the figure;

[0018] Figure 4 This is a schematic diagram of the main assembly structure of the first shell and the second shell in this utility model;

[0019] Figure 5 for Figure 4 An enlarged structural diagram of part B shown in the figure;

[0020] Figure 6 This is a schematic diagram of the first shell structure in this utility model.

[0021] Reference numerals in the attached drawings: 1. Muffler body; 2. First housing; 3. Second housing; 4. Bellows body; 5. Assembly groove; 6. Mounting groove; 7. Clamping plate; 8. First spring; 9. Rubber pad; 10. Insertion plate; 11. Limiting block; 12. Tooth groove; 13. Slide rod; 14. Tooth block; 15. Second spring; 16. Pull ring. Detailed Implementation

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] This utility model embodiment provides a muffler bellows connection assembly, such as Figure 1-6As shown, the muffler bellows connection assembly includes: a first housing 2 and a second housing 3 disposed on the air inlet pipe of the muffler body 1 for connecting and fixing the bellows body 4; clamping plates 7 symmetrically disposed in the first housing 2 and the second housing 3 for clamping the bellows body 4 and the air inlet pipe of the muffler body 1; a first spring 8 disposed in the first housing 2 and the second housing 3 for limiting the clamping plates 7, the bottom end of the first spring 8 being fixedly connected to the clamping plates 7; and a limiting mechanism disposed on the first housing 2 and the second housing 3 for limiting the movement.

[0025] In this embodiment, the first housing 2 and the second housing 3 can be operated separately when installing or disassembling the bellows body 4. For example, during initial installation, one end of the bellows body 4 is first placed at a suitable position on the air intake pipe of the muffler body 1, and then the first housing 2 and the second housing 3 are closed from both sides, and a fixed connection is achieved through a subsequent clamping structure. When the bellows body 4 needs to be replaced, the first housing 2 and the second housing 3 can be directly separated, avoiding large-scale disassembly of the entire connecting assembly, making the operation simple and quick. Compared with the traditional rigid welding connection, there is no need to use professional cutting tools to damage the original permanent fixed connection, which greatly saves disassembly time and labor costs, while reducing the risk of damage to the internal combustion engine connection during disassembly, ensuring the installation accuracy and connection reliability of the subsequent new muffler. When the bellows body 4 is inserted into the combined structure of the first housing 2 and the second housing 3 on the intake pipe of the muffler body 1, the clamping plate 7, under the action of the first spring 8, tightly clamps the bellows body 4 and the intake pipe of the muffler body 1 from both sides, providing a stable connection force. This clamping method is more flexible than the welding connection, which can not only meet the connection strength requirements during initial installation and ensure that the muffler works relatively stably with the internal combustion engine, but also easily achieve separation when disassembly is required by releasing the clamping force of the clamping plate 7, effectively solving the problem of difficult disassembly of traditional rigid connections. Furthermore, the symmetrical arrangement of the clamping plates 7 ensures more even force distribution and a more stable and reliable connection, avoiding problems such as loose connections or poor sealing caused by uneven local force distribution. This improves the stability and reliability of the muffler connection and extends the service life of the entire exhaust system. The bottom end of the first spring 8 is fixedly connected to the clamping plate 7. Under normal operating conditions, the first spring 8 is in a compressed state, continuously applying elastic force to the clamping plate 7, maintaining the clamping force between the clamping plate 7 and the bellows body 4 and the intake pipe of the muffler body 1. When subjected to a certain external force, such as vibration or slight displacement, the spring can act as a buffer, allowing for minor adjustments to the position of the clamping plate 7 within a certain range, preventing damage to components due to rigid collisions. In summary, the muffler bellows connection assembly of this utility model solves the drawbacks of the traditional rigid connection method of mufflers from multiple aspects through the synergistic effect of the above-mentioned components, especially the problem of difficult disassembly.

[0026] In a further preferred embodiment of the present invention, the limiting mechanism includes: a plug-in plate 10 symmetrically fixedly installed on the first housing 2, the plug-in plate 10 having equidistant toothed grooves 12; a limiting block 11 symmetrically fixedly installed on the second housing 3, the limiting block 11 having a toothed block 14 that can mesh with the toothed grooves 12; a slide rod 13 slidably installed on the limiting block 11, one end of the slide rod 13 being fixedly connected to the toothed block 14; and a second spring 15 sleeved on the slide rod 13.

[0027] In this embodiment, the plug-in plate 10 is symmetrically fixedly mounted on the first housing 2 and has equidistantly spaced toothed grooves 12. These toothed grooves 12 provide precise positioning and a stable connection foundation for subsequent engagement with the toothed block 14. When the first housing 2 and the second housing 3 need to be connected and assembled, the toothed grooves 12 can guide the toothed block 14 to accurately embed into the corresponding position, thereby ensuring the stability and reliability of the overall structure of the muffler bellows connection assembly; the limiting block 11 is symmetrically fixed on the second housing 3, and the toothed block 14 inside it can engage with the toothed grooves 12. This engagement structure greatly enhances the firmness of the connection between the first housing 2 and the second housing 3. During normal operation of the muffler, it will be subjected to external forces such as internal combustion engine vibration and airflow impact, and the tight engagement of the toothed block 14 with the toothed groove 12 can effectively resist these external forces, preventing relative displacement or loosening between the two housings. The sliding rod 13 is slidably mounted on the limiting block 11, and one end of it is fixedly connected to the toothed block 14. The sliding rod 13 provides guidance and support for the movement of the toothed block 14. When the connecting assembly needs to be disassembled or adjusted, the operator can pull the slide rod 13 to disengage the toothed block 14 from the toothed groove 12, thus easily separating or reinstalling the two housings, greatly improving the maintainability and ease of operation of the connecting assembly. Simultaneously, the stable sliding performance of the slide rod 13 ensures the smoothness of the toothed block 14 during engagement and disengagement, preventing damage to the toothed groove 12 and the limiting mechanism due to jamming or misalignment of the toothed block 14, further extending the service life of the limiting mechanism. The second spring 15, sleeved on the slide rod 13, plays a crucial role. Under normal operating conditions, the second spring 15 is in a compressed state, providing continuous pressure on the toothed block 14 towards the toothed groove 12, ensuring that the toothed block 14 and the toothed groove 12 always maintain a tight engagement, preventing the toothed block 14 from accidentally disengaging from the toothed groove 12 due to vibration or other factors, thereby further enhancing the reliability and stability of the connection. Moreover, when it is necessary to disassemble the connecting components, the operator can overcome the elastic force of the second spring 15 to pull the slide bar 13. After the operation is completed, the slide bar 13 is released, and the second spring 15 can automatically push the tooth block 14 back to the initial position, ready for the next engagement. This automatic reset function simplifies the operation process, improves work efficiency, and also ensures the consistency of the limit mechanism's performance after multiple uses.

[0028] In a further preferred embodiment of the present invention, both the first housing 2 and the second housing 3 are provided with an assembly groove 5, which is adapted to the air inlet pipe of the corrugated pipe body 4 and the muffler body 1.

[0029] In this embodiment, the assembly groove 5 is formed on the first housing 2 and the second housing 3, and its shape and size are precisely adapted to the bellows body 4 and the air inlet pipe of the muffler body 1. This precise adaptation allows the bellows body 4 and the air inlet pipe of the muffler body 1 to be accurately embedded into the assembly groove 5 during installation, providing a precise positioning basis for subsequent connection and fixing operations. This not only reduces the adjustment time and difficulty during installation and improves installation efficiency, but also avoids problems such as loose connection and poor sealing that may be caused by inaccurate installation position.

[0030] In a further preferred embodiment of this utility model, the card plate 7 is semi-circular, and an arc-shaped groove adapted to the air inlet pipe of the corrugated pipe body 4 and the muffler body 1 is provided on it.

[0031] In this embodiment, when installing the muffler bellows connection assembly, the bellows body 4 is aligned with the air inlet pipe of the muffler body 1, and then the first housing 2 and the second housing 3 are closed. At this time, under the elastic force of the first spring 8, the semi-circular clamping plate 7 will have its arc-shaped groove tightly fitted to the outer wall of the bellows body 4 and the air inlet pipe of the muffler body 1, thereby achieving stable clamping and fixing. Since the clamping plate 7 is semi-circular and has an arc-shaped groove that matches the connecting parts, it can conform well to the circular cross-sectional shape of the bellows body 4 and the air inlet pipe, ensuring tight and uniform contact. The arc-shaped groove design can form a good fit with the outer wall of the bellows body 4 and the air inlet pipe of the muffler body 1. Compared with clamping plates of other shapes, it greatly increases the contact area, effectively reduces the gap at the connection part, and thus improves the sealing performance of the connection.

[0032] In a further preferred embodiment of the present invention, the limiting block 11 is provided with a sliding hole, the sliding hole is adapted to the sliding rod 13, and a pull ring 16 for pulling is fixedly installed on the sliding rod 13.

[0033] In this embodiment, the fitting design of the sliding hole and the sliding rod 13 provides precise guidance and constraint for the linear reciprocating motion of the sliding rod 13. During the installation, disassembly, and maintenance of the muffler bellows connecting assembly, when it is necessary to engage or disengage the toothed block 14 with the toothed groove 12, the sliding rod 13 slides stably along the sliding hole, ensuring that the toothed block 14 can move accurately along the predetermined trajectory. This precise guiding effect avoids abnormal situations such as deviation or jamming of the toothed block 14 during movement, thereby ensuring the smooth operation of the limiting mechanism and improving the maintainability and ease of use of the connecting assembly.

[0034] In a further preferred embodiment of the present invention, both the first housing 2 and the second housing 3 are provided with mounting grooves 6, which are used to assemble the first spring 8 and the retaining plate 7.

[0035] In this embodiment, the mounting slot 6 provides dedicated assembly space for the first spring 8 and the retaining plate 7, allowing these components to be neatly and securely placed within the first housing 2 and the second housing 3. From a structural integrity perspective, this built-in design avoids exposing the first spring 8 and the retaining plate 7, reducing their susceptibility to external impacts, corrosion, and other factors, thereby effectively protecting these critical components and extending their service life.

[0036] In a further preferred embodiment of the present invention, the limiting block 11 is provided with a through opening, which is adapted to the second spring 15 and the tooth block 14.

[0037] In this embodiment, the opening provides a reasonable spatial layout for the movement of the second spring 15 and the toothed block 14; for the second spring 15, the shape and size adaptability of the opening ensures that it can be stably installed inside the limiting block 11, and can stretch and extend along a predetermined direction without deviation or twisting when compressed and stretched by the toothed block 14.

[0038] In a further preferred embodiment of this utility model, the first housing 2 and the second housing 3 are both made of metal, and a rubber pad 9 for increasing friction is provided in the arc-shaped groove. The rubber pad 9 is in contact with the outer wall of the air inlet pipe of the bellows body 4 and the muffler body 1.

[0039] In this embodiment, the use of metal for the first housing 2 and the second housing 3 offers several advantages. Metal possesses high strength and hardness, providing stable and reliable structural support for the connecting components; the rubber pad 9 positioned within the arc-shaped groove plays a crucial role. The rubber pad 9 is tightly fitted to the outer wall of the bellows body 4 and the intake pipe of the muffler body 1. Firstly, the rubber material has excellent elastic deformation capabilities, which can compensate to some extent for changes in gaps between components caused by factors such as machining accuracy errors, vibration, or thermal expansion and contraction, further enhancing the tightness and sealing of the connection.

[0040] In summary, the design allowing for the separate operation of the first housing 2 and the second housing 3 solves the problem of difficult disassembly of traditional rigid connections, avoids large-scale disassembly, saves disassembly time and labor costs, reduces the risk of damage to the internal combustion engine connection parts, and ensures subsequent installation accuracy and connection reliability. For example, the operation is simple and quick when installing and replacing the bellows body 4. The cooperation between the clamping plate 7 and the first spring 8 provides a stable connection force while buffering external forces, allowing for some fine adjustments to avoid component damage. Furthermore, the symmetrical arrangement of the clamping plates 7 ensures uniform force distribution, a stable and reliable connection, improves the stability and reliability of the muffler connection, and extends the exhaust cycle. System service life; In the limiting mechanism, the toothed groove 12 of the plug plate 10 meshes with the toothed block 14 of the limiting block 11, enhancing the connection firmness and resisting vibration and airflow impact. The slide rod 13 provides guiding support for the movement of the toothed block 14, facilitating disassembly and adjustment, improving maintainability and ease of operation. The second spring 15 ensures that the toothed block 14 is tightly meshed and automatically resets, enhancing connection reliability and stability and extending the service life of the limiting mechanism. The precise fit between the assembly groove 5 and the bellows body 4 and the air intake pipe of the muffler body 1 reduces installation and adjustment time and difficulty, improves installation efficiency, and avoids problems such as loose connection and poor sealing.

[0041] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0042] It should be understood, in the several embodiments provided in this application, that the disclosed apparatus may be implemented in other ways.

[0043] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A muffler bellows connection assembly, characterized in that, include: A first housing (2) and a second housing (3) are provided on the intake pipe of the muffler body (1) for connecting and fixing the bellows body (4); A clamping plate (7) is symmetrically arranged in the first housing (2) and the second housing (3) to clamp the bellows body (4) and the intake pipe of the muffler body (1); A first spring (8) is respectively installed in the first housing (2) and the second housing (3) to limit the position of the card plate (7), and the bottom end of the first spring (8) is fixedly connected to the card plate (7); A limiting mechanism is provided on the first housing (2) and the second housing (3) for limiting the position.

2. The muffler bellows connection assembly as described in claim 1, characterized in that, The limiting mechanism includes: A plug-in plate (10) is symmetrically fixedly installed on the first housing (2), and the plug-in plate (10) is provided with toothed grooves (12) at equal intervals; A limiting block (11) is symmetrically fixedly installed on the second housing (3), and a toothed block (14) that can mesh with the toothed groove (12) is provided in the limiting block (11); A slide rod (13) is slidably mounted on the limiting block (11), and one end of the slide rod (13) is fixedly connected to the toothed block (14); A second spring (15) is sleeved on the slide rod (13).

3. The muffler bellows connection assembly as described in claim 1, characterized in that, Both the first housing (2) and the second housing (3) are provided with assembly slots (5), which are adapted to the air inlet pipes of the bellows body (4) and the muffler body (1).

4. The muffler bellows connection assembly as described in claim 1, characterized in that, The card plate (7) is semi-circular, and has an arc-shaped groove on it that is adapted to the air intake pipe of the corrugated pipe body (4) and the muffler body (1).

5. The muffler bellows connection assembly as described in claim 2, characterized in that, The limiting block (11) has a sliding hole that is adapted to the sliding rod (13), and a pull ring (16) for pulling is fixedly installed on the sliding rod (13).

6. The muffler bellows connection assembly as described in claim 1, characterized in that, Both the first housing (2) and the second housing (3) are provided with mounting grooves (6), which are used to assemble the first spring (8) and the retaining plate (7).

7. The muffler bellows connection assembly as described in claim 2, characterized in that, The limiting block (11) has an opening that is adapted to the second spring (15) and the tooth block (14).

8. The muffler bellows connection assembly as described in claim 4, characterized in that, The first housing (2) and the second housing (3) are both made of metal. A rubber pad (9) for increasing friction is provided in the arc groove. The rubber pad (9) is in contact with the outer wall of the bellows body (4) and the air intake pipe of the muffler body (1).

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