Side air inlet structure of tricycle
By setting a side air intake channel and a resonant noise reduction cavity in the longitudinal beam of the tricycle frame, the problems of poor air circulation, dust accumulation and noise in the traditional tricycle air intake system are solved, the life of the air filter and driving comfort are improved, and the vehicle structure is optimized.
Patent Information
- Application Number
- CN202520305174.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-02-25
AI Technical Summary
Traditional tricycle engine intake systems suffer from poor air circulation, dust accumulation, small air filter capacity, and noise issues, which affect engine performance and driving comfort.
The air intake channel is located inside the longitudinal beam on one side of the frame. It adopts a hollow square tube and sealing components to form a closed air intake channel. A resonant noise reduction cavity is set in the air intake channel to optimize airflow and filtration efficiency.
It improves the intake environment, extends the life of the air filter, reduces noise levels, enhances vehicle stability and driving comfort, and improves the rationality of space utilization.
Smart Images

Figure CN223938157U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tricycle processing technology, and in particular to a side air intake structure for tricycles. Background Technology
[0002] In the design and production of tricycles, the layout of the engine intake system has always been a key technical issue. In traditional tricycle designs, the engine intake system is often located under the seat. This layout has many shortcomings.
[0003] First, the space under the seat is relatively small and enclosed, resulting in poor air circulation and a harsh intake environment. Dust and impurities in the air easily accumulate and are drawn into the intake system, causing serious contamination and wear to the air filter. This not only shortens the lifespan of the air filter but also affects the normal operation and performance of the engine.
[0004] Secondly, due to limited space under the seat, traditional tricycle air intake systems are often designed with space constraints in mind, resulting in relatively small air filter volumes. Small air filter volumes mean limited filtration capacity and efficiency, making it difficult to effectively filter out impurities and particles in the air. This not only exacerbates engine wear and failure rates but also leads to noise problems. When air flows directly through a small air filter at a high velocity, it generates significant noise, affecting driver comfort and driving experience. Therefore, it is necessary to improve and optimize existing tricycle engine air intake systems to enhance the quality of the intake environment, extend the lifespan of the air filter, and reduce noise levels. Utility Model Content
[0005] To address the problems mentioned in the background art, this utility model discloses a side air intake structure for a tricycle, which can improve the air intake environment and extend the life of the air filter: by cleverly setting the air intake channel in the longitudinal beam on one side of the frame, it effectively avoids the problems of poor air circulation and dust accumulation caused by the air intake system being located under the seat in the traditional design.
[0006] The technical solution adopted by this utility model is: a side air intake structure for a three-wheeled vehicle, including an air intake channel set on the frame, the air intake channel being connected to an air intake pipe and an air outlet pipe, the air intake pipe being connected to an air filter, the air intake channel being set inside a longitudinal beam on one side of the frame, and the air outlet pipe and air intake pipe being set on the inner and outer sides of the longitudinal beam respectively, and connected to the air intake channel inside the longitudinal beam.
[0007] To further optimize this utility model, the following technical solutions may be preferred:
[0008] Preferably, the longitudinal beam is a hollow square tube, and a first sealing component and a second sealing component are spaced apart inside the hollow square tube. The first sealing component, the second sealing component, and the hollow square tube form a sealed air intake channel, effectively preventing air leakage and impurity intrusion, and ensuring the stability and reliability of the air intake system. At the same time, the sealing components adopt a removable sealing gasket design, which facilitates installation, maintenance, and replacement, reducing maintenance costs.
[0009] Preferably, both the first sealing component and the second sealing component include a fixing frame disposed within the longitudinal beam, and a sealing gasket is detachably disposed on the fixing frame, the sealing gasket being sealed and fitted against the inner wall of the longitudinal beam.
[0010] Preferably, the first sealing component is disposed at the end of the longitudinal beam near the front of the vehicle, and the second sealing component is disposed in the middle of the longitudinal beam.
[0011] Preferably, the air inlet pipe and the air outlet pipe are inclined, and the longitudinal beam has elliptical through holes at the positions of the air inlet pipe and the air outlet pipe to increase the air inlet area and the air outlet area.
[0012] Preferably, the opening of the air intake pipe faces the front of the vehicle, and the opening of the air outlet pipe faces the rear of the vehicle; this design facilitates smoother airflow into the air intake system during the tricycle's operation, reducing airflow resistance and energy consumption.
[0013] Preferably, the intake pipe and exhaust pipe are connected to the middle of the intake channel, forming a resonant noise reduction cavity within the intake channel. This layout not only facilitates the uniform distribution and flow of air within the intake channel but also creates a resonant noise reduction cavity by rationally dividing the space of the intake channel. This allows air to pass through the air filter more evenly, improving the air filter's filtration efficiency and performance, and extending its service life. When air passes through the intake channel, the resonant noise reduction cavity absorbs and reduces some noise, further reducing the noise level generated by the intake system and improving the driver's ride comfort.
[0014] Beneficial effects:
[0015] (1) Improved intake environment and extended air filter life: By cleverly setting the intake channel in the longitudinal beam on one side of the frame, the problems of poor air circulation and dust accumulation caused by the intake system being located under the seat in the traditional design are effectively avoided. This improvement significantly improves the cleanliness of the intake environment, reduces the contamination of the air filter by impurities in the air, thereby greatly extending the service life of the air filter and reducing the replacement frequency and maintenance costs.
[0016] (2) Increase the volume of the air filter to reduce noise: The new layout of the intake channel provides more installation space for the air filter, allowing for the selection of a larger volume air filter. The increased volume not only improves the filtration efficiency and capacity of the air filter, but also effectively slows down the airflow velocity, thereby significantly reducing the noise generated by the intake system. This is of great significance for improving the driver's ride comfort and driving experience.
[0017] (3) Optimize space utilization and enhance structural rationality: The design of the side air intake structure makes full use of the longitudinal beam space of the frame and avoids the limitation of the space under the seat, making the overall structure of the tricycle more compact and reasonable. This layout not only improves the stability and safety of the vehicle, but also provides more possibilities for the arrangement of other components, which is conducive to improving the overall performance of the tricycle.
[0018] (4) High adaptability and easy to promote: The side air intake structure for tricycles proposed in this utility model has wide applicability and can be applied to tricycles of various types and specifications. At the same time, its structure is simple and easy to install, making it easy to promote and apply in the processing and production of tricycles.
[0019] In summary, the tricycle side air intake structure proposed in this utility model has shown significant beneficial effects in improving the air intake environment, extending the life of the air filter, reducing noise, optimizing space utilization, and enhancing structural rationality, and has broad application prospects and market value. Attached Figure Description
[0020] Figure 1 This is a three-dimensional structural diagram of the tricycle's overall frame;
[0021] Figure 2 A top view of the overall frame of the tricycle;
[0022] Figure 3 A detailed structural diagram of the side air intake structure;
[0023] Figure 4 This is a front view of the overall frame of the tricycle.
[0024] Figure 5 for Figure 4 Sectional view at point BB.
[0025] Among them, 1-front longitudinal beam, 2-rear longitudinal beam, 3-connecting beam between front and rear longitudinal beams, 4-front frame, 5-rear frame, 6-intake pipe, 7-exhaust pipe, 8-first sealing component, 9-second sealing component, 10-intake channel, 11-fixed bracket, 12-sealing gasket, 13-screw. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.
[0027] Example 1:
[0028] The tricycle frame mainly consists of a rear longitudinal beam 2, a front longitudinal beam 1, a connecting beam between the front and rear longitudinal beams 3, a rear frame 5, and a front frame 4. Specifically, the rear longitudinal beams 2 are fixedly installed on both sides of the rear frame 5, and a rear beam frame is then fixedly installed between these two rear longitudinal beams. These three components together form the rear half of the frame. The front longitudinal beams are fixedly installed on both sides of the front frame, and connecting beams between the front and rear longitudinal beams are installed on the outer surfaces of the two front longitudinal beams.
[0029] like Figure 1-5 As shown, a side air intake structure for a three-wheeled vehicle includes an air intake channel 10 installed on the frame. The air intake channel 10 is connected to an air intake pipe 6 and an air outlet pipe 7. The air intake pipe is connected to an air filter. The air intake channel is installed inside a longitudinal beam (front longitudinal beam / rear longitudinal beam) on one side of the frame. The air outlet pipe 7 and the air intake pipe are respectively installed on the inner and outer sides of the longitudinal beam and connected to the air intake channel inside the longitudinal beam.
[0030] The longitudinal beams are hollow square tubes, and a first sealing component 8 and a second sealing component 9 are installed at intervals inside the hollow square tubes. The first sealing component 8, the second sealing component 9 and the hollow square tubes form a sealed air intake channel, effectively preventing air leakage and impurity intrusion, and ensuring the stability and reliability of the air intake system. At the same time, the sealing components adopt a removable sealing gasket design, which facilitates installation, maintenance and replacement, and reduces maintenance costs.
[0031] In a preferred embodiment, both the first sealing component 8 and the second sealing component 9 include a fixing frame 11 installed inside the longitudinal beam. A sealing gasket 12 is detachably installed on the fixing frame 11. The sealing gasket is sealed and fitted to the inner wall of the longitudinal beam. Specifically, the sealing gasket is detachably installed on the fixing frame by screws 13. The detachable method facilitates maintenance and replacement while maintaining the sealing effect.
[0032] In a preferred embodiment, the first sealing component 8 is installed at the end of the longitudinal beam near the front of the vehicle, and the second sealing component is installed in the middle of the longitudinal beam.
[0033] In a preferred embodiment, the intake and exhaust pipes are installed at an angle, and elliptical through holes are provided on the longitudinal beams corresponding to the positions of the intake and exhaust pipes to increase the intake and exhaust areas. Furthermore, the intake pipe opening faces the front of the vehicle, and the exhaust pipe opening faces the rear; forming a direct connection between the intake pipe, intake channel, and exhaust pipe facilitates smoother airflow into the intake system during tricycle operation, reducing airflow resistance and energy consumption.
[0034] In a preferred embodiment, the intake pipe and exhaust pipe are connected to the middle of the intake channel, forming a resonant noise reduction cavity within the intake channel. This layout not only facilitates the uniform distribution and flow of air within the intake channel but also, through the rational division of the intake channel space, creates a resonant noise reduction cavity. This allows air to pass through the air filter more evenly, improving the air filter's filtration efficiency and performance, and extending its service life. When air passes through the intake channel, the resonant noise reduction cavity absorbs and reduces some noise, further lowering the noise level generated by the intake system and improving the driver's ride comfort.
[0035] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an 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.
[0036] The above are preferred embodiments of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A side air intake structure for a three-wheeled vehicle, comprising an air intake channel mounted on the frame, the air intake channel being connected to an air intake pipe and an air outlet pipe, the air intake pipe being connected to an air filter, characterized in that: The air intake channel is located inside the longitudinal beam on one side of the frame, and the air outlet pipe and air intake pipe are respectively located on the inner and outer sides of the longitudinal beam and connected to the air intake channel inside the longitudinal beam.
2. The side air intake structure for a tricycle according to claim 1, characterized in that: The longitudinal beam is a hollow square tube, and a first sealing component and a second sealing component are spaced apart inside the hollow square tube, forming a sealed air intake channel between the first sealing component, the second sealing component and the hollow square tube.
3. The side air intake structure for a tricycle according to claim 2, characterized in that: Both the first sealing component and the second sealing component include a fixing frame disposed inside the longitudinal beam. A sealing gasket is detachably disposed on the fixing frame, and the sealing gasket is sealed and fitted to the inner wall of the longitudinal beam.
4. The side air intake structure for a tricycle according to claim 3, characterized in that: The first sealing component is located at the end of the longitudinal beam near the front of the vehicle, and the second sealing component is located in the middle of the longitudinal beam.
5. The side air intake structure for a tricycle according to claim 1, characterized in that: The air inlet pipe and air outlet pipe are inclined, and elliptical through holes are opened on the longitudinal beam corresponding to the positions of the air inlet pipe and air outlet pipe.
6. The side air intake structure for a tricycle according to claim 5, characterized in that: The opening of the air intake pipe faces the front of the vehicle, and the opening of the air outlet pipe faces the rear of the vehicle.
7. The side air intake structure for a tricycle according to claim 5, characterized in that: The air intake pipe and air outlet pipe are connected to the middle of the air intake channel, and a resonant noise reduction cavity is formed inside the air intake channel.