Variable size intake duct

Abstract

The utility model discloses a size changeable air intake pipe, including the air intake manifold for connecting engine, the air throttle valve for accurate control air intake and the pipeline main part for guiding and optimizing air intake airflow, for guiding and optimizing air intake airflow, air intake manifold and pipeline main part are connected respectively at air throttle valve's both sides, and pipeline main part is by interface section, connecting section and horn mouth section at least three section pipe body detachably connected composition, pipeline main part gradually increases along the direction of away from air throttle valve its pipe diameter. The utility model discloses size changeable air intake pipe, will air intake pipe design as multistage detachable modularization structure, need maintenance or refitting, and user only needs to simply unscrew each section pipe body, and the operation is extremely simple, and each section uses the screw thread cooperation and connects, spares the independent clamp, flange and multiple bolts, reduces the part quantity and material cost.

Description

Technical Field

[0001] This utility model relates to the field of automotive air intake technology, and in particular to an air intake pipe with adjustable dimensions. Background Technology

[0002] The intake system of a motorcycle engine is crucial to its performance, and the intake manifold connected to the throttle valve is responsible for smoothly introducing air into the engine.

[0003] However, in existing technologies, the intake manifold after the throttle valve in motorcycles is typically designed as a single piece. This structure has significant limitations: First, its length and cavity volume are fixed, making it impossible to flexibly adjust according to engine modification needs (such as increasing intake volume or changing the resonant frequency). If adjustments to intake characteristics are required, the entire manifold must be replaced, which is costly and wasteful of materials. Second, when a part of the intake manifold is damaged (such as a dent at the flare or a crack in the manifold itself), the entire assembly must also be replaced, making maintenance inconvenient and uneconomical. Therefore, there is an urgent need in the field for an intake manifold structure that can flexibly adapt to different usage scenarios and facilitate localized repairs.

[0004] Therefore, a technical solution to the above problems is needed. Utility Model Content

[0005] In order to solve the technical problems existing in the prior art, the purpose of this utility model is to provide an air intake pipe with variable size to solve the above-mentioned technical problems.

[0006] To achieve its purpose, the present invention adopts the following technical solution:

[0007] Adjustable-size intake pipes, including:

[0008] The intake manifold is used to connect to the engine;

[0009] Throttle valve, used to precisely control the intake air volume; and

[0010] The main body of the pipe is used to guide and optimize the intake airflow. The intake manifold and the main body of the pipe are respectively connected to both sides of the throttle valve, and the main body of the pipe is composed of at least three pipe sections, namely an interface section, a connecting section and a flared section, which are detachably connected.

[0011] In some embodiments, the pipe body has a gradually increasing diameter along the direction away from the throttle valve.

[0012] In some embodiments, the interface segment, the connection segment, and the horn segment are connected in sequence, and the interface segment is used to connect the throttle valve.

[0013] In some embodiments, the end of the flared section away from the connecting section is configured as a flared opening.

[0014] In some embodiments, the connecting segment includes at least one connecting ring, which is an annular hollow pipe structure with an internal channel, and its diameter gradually increases in the direction away from the interface segment.

[0015] In some implementations, the interface segment, connecting segment, and flared segment are detachably connected to each other via threaded engagement.

[0016] In some embodiments, the throttle valve is detachably connected to the pipe body, and the interface section is detachably connected to the throttle valve.

[0017] In some embodiments, the interface segment, the connecting segment, and the flared segment are provided with anti-loosening structures at the connection between the throttle valve and the interface segment.

[0018] In some embodiments, the anti-loosening structure includes a threaded hole radially disposed at the threaded connection between the interface section, the connecting section and the flared section, and a fastener screwed into the threaded hole, the end of the fastener being able to abut against the outer surface of the adjacent pipe section.

[0019] The variable-size intake pipe of this invention is designed as a multi-section detachable modular structure. Users can freely add, reduce, or replace connecting sections of different sizes and tapers, like building blocks, according to the engine's performance requirements. This allows for flexible adjustment of the total length and volume of the intake manifold, optimizing intake efficiency and resonance effects to meet different power tuning needs. Furthermore, when local damage occurs to the pipe, it is not necessary to replace the entire intake pipe assembly; only the damaged section (such as the flared section or a connecting ring) needs to be replaced, greatly saving maintenance time and parts costs.

[0020] The variable-size air intake pipe of this invention uses a pure threaded connection between the sections of the main pipe body, eliminating the need for bulky clamps and bolts in the traditional method. This not only reduces weight and cost but also makes the overall structure more compact and aesthetically pleasing. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. The drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This utility model features a three-dimensional intake pipe with adjustable dimensions. Figure 1 ;

[0023] Figure 2This utility model features a three-dimensional intake pipe with adjustable dimensions. Figure 2 ;

[0024] Figure 3 This is an exploded structural diagram of the variable-size intake pipe in this utility model. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] In the above description, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0030] like Figures 1 to 3 As shown, a variable-size intake pipe is used for motorcycle engine air intake. This intake pipe mainly includes an intake manifold 100 for connecting to the engine, a throttle valve 200 for precisely controlling the intake air volume, and a pipe body 300 for guiding and optimizing the intake airflow. The intake manifold 100 and the pipe body 300 are respectively connected to both sides of the throttle valve 200. External air enters through the pipe body 300, flows through the throttle valve 200 for flow regulation, and finally is evenly delivered to the engine cylinders through the intake manifold 100, completing the entire intake process. The key feature is that the pipe body 300 is a multi-section detachable connection. Unlike existing technologies that use integrated pipes or are fixed with clamps and bolts, the pipe body 300 of this invention adopts a multi-section detachable modular design, and the modules are directly connected and sealed only through precision-machined threaded connections, completely eliminating the need for additional clamps, flanges, bolts, and other fasteners, greatly simplifying the assembly and disassembly process.

[0031] Among them, see Figures 1 to 3 The main body of the pipe 300 consists of three main pipe sections: an interface section 310 for connecting to the throttle valve 200, at least one connecting section 320, and a bell-shaped section 330 for efficient air intake. These three pipe sections are detachably connected in sequence to form an integrated airflow channel. This detachability facilitates the disassembly and replacement of the main body of the pipe 300.

[0032] Preferably, the adjacent sections of the pipe body 300 (e.g., between the interface section 310 and the connecting section 320, and between the connecting section 320 and the bell-mouth section 330) are all directly detachable by using a pure threaded connection, so as to solve the problems of complex structure, inconvenient disassembly and assembly, high cost and easy air leakage caused by the reliance on clamps, flanges and multiple bolts in the prior art.

[0033] The pipe body 300 and the throttle valve 200 can also be detachably connected. Preferably, the interface section 310 of the pipe body 300 and the air inlet of the throttle valve 200 facilitate the overall replacement and disassembly of the pipe body 300. Specifically, in this embodiment, the pipe body 300 and the throttle valve 200 are connected by a threaded connection.

[0034] The main body of the pipe 300 gradually increases in size in the direction away from the throttle valve 200. Preferably, the diameters of the interface section 310, the connecting section 320, and the flared section 330 gradually increase.

[0035] Specifically, in this embodiment, the interface section 310 is a hollow circular pipe structure with an internal thread at one end (air outlet). The throttle valve 200 has an external thread on its air inlet, which is used to directly screw into the external thread of the throttle valve 200's air inlet to achieve a quick sealing connection. Its pipe diameter remains unchanged along the axial direction.

[0036] Preferably, the dimensions of the interface segment 310 do not increase in the direction away from the throttle valve 200.

[0037] The connecting section 320 includes at least one connecting ring. Specifically, in this embodiment, one connecting ring is provided. The connecting ring is an annular hollow pipe structure with a smooth internal channel. Its two ends are respectively machined with internal threads and external threads. Its external threads are connected with the internal threads of the interface section 310 to complete the mating connection.

[0038] Alternatively, in some other embodiments, in order to change the length and size of the pipe body 300, two, three or four connecting rings can be provided, etc., without limitation.

[0039] Preferably, the diameter of the connecting ring gradually increases in the direction away from the interface section 310 (i.e., the air intake direction), so that its air intake diameter is larger than its air outlet diameter. Users can increase or decrease the number of connecting rings as needed, thereby flexibly adjusting the total length and expansion curve of the pipe body 300 to adapt to different modification requirements.

[0040] The flared section 330 is a pipe structure with a flared opening at one end and an external thread at the other end. The external thread is used to screw into the internal thread at the end of the adjacent connecting section 320. The flared opening can effectively reduce air intake resistance and improve volumetric efficiency. To ensure a smooth airflow transition, its minimum inner diameter (connecting end) is greater than or equal to the maximum inner diameter (intake end) of the adjacent connecting section 320.

[0041] Preferably, the inlet size of the interface section 310 is equal to the outlet size of the connecting section 320, and the outlet size of the flared section 330 is equal to the inlet size of the connecting section 320, so that the diameter of the main body of the pipe 300 can gradually increase in the direction away from the throttle valve 200, so that the connection of the interface section 310, the connecting section 320 and the flared section 330 will not affect the smoothness of air intake, and increase the difficulty of controlling the air intake of the intake pipe.

[0042] Preferably, a sealing ring can be provided between the throttle valve 200 and the intake manifold 100 to prevent air leakage between the throttle valve 200 and the intake manifold 100.

[0043] Preferably, the throttle valve 200 is provided with an idle speed replenishment valve 210. Specifically, the idle speed replenishment valve 210 is an idle speed motor provided on the throttle valve 200.

[0044] Auxiliary anti-loosening structures are also provided at the threaded connections of each pipe section, and at the connection between the pipe body 300 and the throttle valve 200. Preferably, the anti-loosening structure includes a fixing hole provided on the pipe wall of a section of the pipe (such as the connecting section 320) and a fixing member that can be installed in the fixing hole. The fixing hole is positioned directly opposite the threaded part of another pipe section or the throttle valve 200 (such as the bell-mouth section 330) connected to it. After the pipe section is connected to other pipes or the throttle valve 200, it is fixed in the fixing hole by the fixing member, which enhances the connection strength between the bell-mouth section 330, the connecting section 320 and the interface section 310, and further ensures the reliability of the threaded connection in the high vibration environment of the engine.

[0045] Specifically, in this embodiment, the fixing hole is a screw hole 400 radially provided on the flared section 330, connecting section 320, or interface section 310. The screw hole 400 penetrates one of the flared section 330, connecting section 320, or interface section 310, and the fixing component is a fastening bolt. During assembly, the two pipe sections or the pipe section and the throttle valve 200 are first tightened together by threads. Then, a fastening bolt is screwed into the screw hole 400 until its end tightly abuts against the crest of the external thread of the adjacent pipe section. This method effectively prevents the threads from loosening due to vibration, ensuring the long-term sealing stability of the connection.

[0046] It is understandable that there are no restrictions on the positions of the internal and external threads on the flare section 330, connecting section 320, interface section 310, and throttle valve 200, as long as the four can be connected by threaded engagement. For example, an external thread can be provided on the interface section 310 to engage with the internal thread provided on the throttle valve 200 for connection.

[0047] When the intake pipe of the motorcycle throttle valve 200 of this utility model needs maintenance or modification, the user only needs to unscrew each section of the pipe body. The operation is extremely simple. Moreover, the sections are connected by threaded engagement, which eliminates the need for separate clamps, flanges and multiple bolts, reducing the number of parts and material costs.

[0048] This utility model's motorcycle throttle valve 200 intake pipe features a modular design that allows users to individually replace a damaged section of the pipe, or customize different intake lengths and flow characteristics by combining connecting sections 320 and flared sections 330 of different sizes and tapers to meet engine performance tuning requirements. Its purely threaded connection eliminates the bulky clamps and bolts of traditional methods, not only reducing weight and cost but also making the overall structure more compact and aesthetically pleasing.

[0049] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. An intake pipe with adjustable dimensions, characterized in that, include: The intake manifold is used to connect to the engine; Throttle valve, used to precisely control the intake air volume; as well as The main body of the pipe is used to guide and optimize the intake airflow. The intake manifold and the main body of the pipe are respectively connected to both sides of the throttle valve, and the main body of the pipe is composed of at least three pipe sections, namely an interface section, a connecting section and a flared section, which are detachably connected.

2. The variable-size intake pipe according to claim 1, characterized in that, The diameter of the main body of the pipe gradually increases in the direction away from the throttle valve.

3. The variable-size intake pipe according to claim 2, characterized in that, The interface segment, connection segment, and horn segment are connected in sequence, and the interface segment is used to connect the throttle valve.

4. The variable-size intake pipe according to claim 2, characterized in that, The end of the flared section away from the connecting section is configured with a flared opening.

5. The variable-size intake pipe according to claim 3, characterized in that, The connecting section includes at least one connecting ring, which is an annular hollow pipe structure with an internal channel, and its diameter gradually increases in the direction away from the interface section.

6. The variable-size intake pipe according to any one of claims 1-5, characterized in that, The interface segment, connecting segment, and flared segment are detachably connected to each other via threaded engagement.

7. The variable-size intake pipe according to claim 6, characterized in that, The throttle valve is detachably connected to the main body of the pipeline, and the interface section is detachably connected to the throttle valve.

8. The variable-size intake pipe according to claim 7, characterized in that, The interface section, connecting section, and flared section are connected to each other, and the connection between the throttle valve and the interface section is also provided with an anti-loosening structure.

9. The variable-size intake pipe according to claim 8, characterized in that, The anti-loosening structure includes a threaded hole radially disposed at the threaded connection between the interface section, the connecting section and the flared section, and a fixing member screwed into the threaded hole. The end of the fixing member can abut against the outer surface of the adjacent pipe section.

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