Air inlet structure and motorcycle

Abstract

The air inlet structure comprises an outer shell, an air inlet cavity is formed in the outer shell, the two opposite sides of the air inlet cavity are the open side and the closed side respectively, and an air inlet and an air outlet are formed in the open side at the same time; at least one main air inlet channel and at least one auxiliary air inlet channel are formed in the outer shell. Each main air inlet channel is arranged on the closed side and communicated between the air inlet side and the air outlet of the air inlet cavity, and each auxiliary air inlet channel is arranged on the open side and communicated between the air outlet side and the air outlet of the air inlet cavity. The air inlet side is opposite to the air inlet, and the air outlet side is opposite to the air outlet; the length of the main air inlet channel is larger than that of the auxiliary air inlet. The auxiliary air inlet channel is provided with a valve; when the rotating speed of the engine does not exceed the set rotating speed, the valve is closed, only the main air inlet channel carries out air inlet, and medium-low-speed resonance air inlet is achieved. On the contrary, the valve is opened, the main air inlet channel and the auxiliary air inlet channel conduct air inlet simultaneously, high-speed inertia air inlet is suitable, and adaptability is good.

Description

Technical Field

[0001] The present invention relates to the technical field of motorcycles, and in particular to an air intake structure and a motorcycle. Background Art

[0002] To improve the driving experience, motorcycle users are paying more and more attention to the power of the engine. Under the same displacement, the most important way to improve performance is to increase the engine's air intake. The larger the air intake, the better the engine performance.

[0003] According to the engine intake characteristics, for medium and low speed resonant intake, within a certain range, the longer the intake pipe and the smaller the diameter, the higher the charging efficiency and the larger the intake volume; for high speed inertial intake, the shorter the pipe and the larger the diameter, the larger the intake volume; under medium and low speed and high speed conditions, the required intake pipe length and diameter are quite different. However, due to the limitations of the existing technical level, the intake pipe of existing motorcycles has only one length and caliber, which cannot adapt to the requirements of high and low speed for intake pipe specifications at the same time, and has poor adaptability. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide an intake structure and a motorcycle, which are provided with a main intake duct and an auxiliary intake duct. At low speed, only the main intake duct intakes air; at high speed, the main intake duct and the auxiliary intake duct intake air at the same time; it can adapt to high and low speed intake requirements, and solves the technical problem of poor adaptability of the motorcycle's intake structure due to the single intake volume.

[0005] To achieve the above object, the present invention provides an air intake structure, comprising:

[0006] An outer shell is formed with an air inlet cavity, and two opposite sides of the air inlet cavity are an open side and a closed side, respectively, and the open side is provided with an air inlet and an air outlet; at least one main air inlet channel and at least one auxiliary air inlet channel are formed in the outer shell; each main air inlet channel is provided on the closed side and communicated between the air inlet side and the air outlet of the air inlet cavity, and each auxiliary air inlet channel is provided on the open side and communicated between the air outlet side and the air outlet of the air inlet cavity; the air inlet side is opposite to the air inlet, and the air outlet side is opposite to the air outlet;

[0007] Each auxiliary air intake duct is provided with a valve; when the actual speed of the engine exceeds the set speed, the valve opens, and all the main air intake ducts and all the auxiliary air intake ducts are connected one by one at the air outlet; otherwise, the valve closes.

[0008] Preferably, it also includes:

[0009] A guide plate, the guide plate is fixedly arranged on the closed side of the outer shell, and at least one curved air passage is formed between the guide plate and the outer shell;

[0010] A plurality of flow diverters are provided, the flow diverters are located in the outer shell and fixed to the air outlet, each flow diverter is provided with an auxiliary air inlet and a guide air duct, the auxiliary air inlet and the guide air duct are cross-connected at one end close to the air outlet; the curved air duct and the guide air duct are connected to form a main air inlet.

[0011] Preferably, the guide plate includes a plurality of arc-shaped plates with protrusions, an arc-shaped groove is formed in the arc-shaped plate, and an abutment plate is integrally connected between two adjacent arc-shaped plates; the outer shell includes an upper shell cover, the upper shell cover is provided with a plurality of circular arc grooves, and a support platform is formed between two adjacent circular arc grooves; when the upper shell cover is fixedly connected to the guide plate, the arc-shaped grooves and the circular arc grooves are interlocked to form a curved airway; the abutment plate and the support platform abut against each other to form a blocking portion, and the blocking portion is used to separate two adjacent curved airways.

[0012] Preferably, a limiting protrusion and a limiting groove that cooperate with each other are provided between the abutting plate and the supporting platform, and an airway fastener is passed through the limiting protrusion and the limiting groove.

[0013] Preferably, the guide plate further comprises a plurality of air inlet cylinders, all of which correspond to all of the arc-shaped plates one by one and are integrally connected; abutting inclined surfaces are provided on the side of the air inlet cylinders away from the arc-shaped plates, and the abutting inclined surfaces abut against the limiting inclined surfaces of the upper shell cover.

[0014] Preferably, the flow diverter head comprises a flow guide cylinder, a flow guide airway is formed at the center of the flow guide cylinder, and an airway seal is also provided between the air inlet cylinder and the flow guide cylinder.

[0015] Preferably, a positioning flange and a positioning groove that cooperate with each other are provided between the air inlet cylinder and the guide cylinder.

[0016] Preferably, the diverter head also includes an adjusting cylinder integrally connected to the guide cylinder, a secondary air inlet duct is formed at the center of the adjusting cylinder, and the central axes of the secondary air inlet duct and the guide air duct intersect in a Y shape; a guide notch is formed on the side of the adjusting cylinder facing the air inlet cavity, and the guide notch is used to guide the airflow in the air inlet cavity into the secondary air inlet duct.

[0017] Preferably, each valve comprises a rotating shaft hinged to the air inlet end of the regulating cylinder; and further comprises:

[0018] A driving motor, the output shaft of which is coaxially connected to the rotating shafts of all valves;

[0019] A speed detection component, which is used to detect the actual speed of the engine;

[0020] When the actual speed detected by the speed detection element exceeds the set speed, the controller is used to control the servo motor to drive the rotating shafts of all valves to synchronously rotate to the set angle according to the signal fed back by the speed detection element.

[0021] Preferably, a cross protrusion and a cross groove that cooperate with each other are provided between the output shaft and the rotating shaft and between two adjacent rotating shafts.

[0022] Preferably, the outer shell body also includes a lower shell cover detachably connected to the upper shell cover; an upper connecting edge is formed on the edge of the upper shell cover, and a lower connecting edge is formed on the edge of the lower shell cover; the upper connecting edge is integrally provided with a plurality of upper connecting ears, and the lower connecting edge is integrally provided with a plurality of lower connecting ears, all the upper connecting ears are opposite to all the lower connecting ears one by one and are connected through shell cover fasteners; a clipping flange and a clipping groove that cooperate with each other are formed between the upper connecting edge and the lower connecting edge, and a shell cover seal is provided between the clipping flange and the clipping groove.

[0023] Preferably, any two adjacent rotating shafts are coaxially connected through a connecting shaft; the lower shell cover is provided with a hinge support for supporting the connecting shaft; the hinge support includes a front splint and a rear splint arranged opposite to each other, and the front splint and the rear splint are fixedly connected through a splint fastener; one of the front splint and the rear splint is provided with a buckle, and the other is provided with a buckle hole matching the buckle.

[0024] The present invention also provides a motorcycle, comprising an engine and the above-mentioned air intake structure, wherein the air intake structure is used for intake of air into the engine.

[0025] Compared with the background technology, the present invention optimizes the air intake structure, and simultaneously arranges a main air intake duct and a secondary air intake duct in the outer shell, wherein the main air intake duct is arranged on the closed side of the outer shell, and the secondary air intake duct is arranged on the open side of the outer shell, and the open side is simultaneously provided with an air inlet and an air outlet, that is, the air intake end of the main air intake duct is farthest from the air outlet, and the air intake end of the secondary air intake duct is closest to the air outlet, and the length of the main air intake duct is greater than the length of the secondary air intake duct;

[0026] The secondary intake duct is equipped with a valve; when the engine speed does not exceed the set speed, the valve is closed, and only the main intake duct intakes air. The main intake duct is longer, has higher charging efficiency, and has a larger intake volume, which can adapt to medium and low speed resonant intake. When the actual engine speed exceeds the set speed, the valve opens, and all the main intake ducts and all the secondary intake ducts are connected one by one at the outlet. The main intake duct and the secondary intake duct intake air at the same time, which increases the intake volume and can adapt to high-speed inertial intake.

[0027] Therefore, the present invention improves the airway structure and flexibly changes the air intake mode, thereby realizing both long-distance air intake and large-diameter air intake, and can adapt to high- and low-speed air intake requirements, with good adaptability.

[0028] The motorcycle provided by the present invention, including the above-mentioned air intake structure, has the same beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0030] Figure 1 A cross-sectional view of an air intake structure provided by a specific embodiment of the present invention;

[0031] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0032] Figure 3 for Figure 1 Cross-sectional view with the filter element removed;

[0033] Figure 4 for Figure 1 Assembly diagram of the middle and upper shell cover and deflector;

[0034] Figure 5 for Figure 4 A cross-sectional view of

[0035] Figure 6 for Figure 1 Assembly diagram of the middle guide plate and the diverter head;

[0036] Figure 7 for Figure 1 Assembly diagram of the middle and lower shell cover and the diverter head;

[0037] Figure 8 for Figure 1 The assembly diagram of the whole diverter in the middle;

[0038] Fig. 9 for Figure 8 A cross-sectional view of all the shunt heads after the drive motor is configured;

[0039] Fig.10 for Figure 1 Cross-sectional view of a single manifold in FIG.

[0040] The reference numerals are as follows:

[0041] An outer shell 1, a main air inlet 2, an auxiliary air inlet 3, a guide plate 4, a splitter 5, an airway fastener 6, an airway seal 7, a drive motor 8 and a hinge support 9;

[0042] An air inlet cavity 10, an air inlet port 11, an air outlet port 12, an upper shell cover 13, a lower shell cover 14, a shell cover fastener 15, a shell cover seal 16 and a filter element 17;

[0043] Arc groove 131, support platform 132, limiting protrusion 133, limiting inclined surface 134, upper connecting edge 135 and upper connecting ear 136;

[0044] Snap-fit ​​flange 1351;

[0045] Lower connecting edge 141;

[0046] A curved airway 21 and a guide airway 22;

[0047] Valve 31;

[0048] A rotating shaft 311 and a connecting shaft 312;

[0049] Cross groove 3211;

[0050] The arc-shaped plate 41, the arc-shaped groove 42, the abutment plate 43, the limiting groove 44 and the air inlet cylinder 45;

[0051] abutment slope 451;

[0052] A guide tube 51 and an adjustment tube 52;

[0053] Positioning flange 511;

[0054] diversion gap 521;

[0055] Output shaft 81;

[0056] Front clamping plate 91 , rear clamping plate 92 , clamping plate fastener 93 and buckle 94 . DETAILED DESCRIPTION

[0057] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0059] First of all, it should be noted that the directions indicated by the four directional words "up, down, left, right, and right" in the text are all attached. Figure 1 The current view is based on the current view.

[0060] The embodiment of the present invention discloses an air intake structure, as shown in the attached Figures 1 to 3As shown, it includes an outer shell 1, which can be specifically the outer shell of the air filter. An air inlet chamber 10 is formed in the outer shell 1, and a filter element 17 is arranged in the air inlet chamber 10 for filtering out impurities. The filter element 17 is installed in the filter shell, and the filter shell is installed in the outer shell 1. The filter element 17 divides the air inlet chamber 10 into a purification chamber and a gas collection chamber that are independent of each other, wherein the purification chamber is located above the filter element 17 and is used to accommodate the filtered gas; the gas collection chamber is located below the filter element 17 and is connected to the air inlet 11, and is used to collect the gas flowing into the air inlet 11.

[0061] As attached Figure 1 As shown, the two opposite sides of the air inlet cavity 10 are an open side and a closed side, respectively. The open side is one side of the lower shell cover 14, and the closed side is one side of the upper shell cover 13. The open side is provided with an air inlet 11 and an air outlet 12 at the same time, that is, air inlet and air outlet are achieved on the same side, which is conducive to extending the length of the air inlet duct and increasing the air intake volume. As a preferred embodiment, both the air inlet 11 and the air outlet 12 are provided on the lower shell cover 14, the air inlet 11 is provided on the left side of the lower shell cover 14, and the air outlet 12 is provided on the right side of the lower shell cover 14.

[0062] At least one main air inlet duct 2 and at least one auxiliary air inlet duct 3 are formed in the outer shell 1. Each main air inlet duct 2 is arranged on the closed side and is connected between the air inlet side of the air inlet cavity 10 and the air outlet 12, and the air inlet side of the air inlet cavity 10 is opposite to the air inlet 11, that is, each main air inlet duct 2 is formed on the upper shell cover 13, and the air inlet end of each main air inlet duct 2 is located at the top of the air inlet cavity 10 and is arranged on one end of the upper shell cover 13 aligned with the air inlet 11, so that the main air inlet duct 2 extends along the inner wall of the upper shell cover 13 until it bends from top to bottom and extends to the air outlet 12.

[0063] As attached Figure 1 and 3 As shown, as a preferred embodiment, the cross-section of each main air intake duct 2 is circular, and each main air intake duct 2 is divided into four sections, including a first straight line segment, a second straight line segment, a third arc segment and a fourth straight line segment connected in sequence, wherein the first straight line segment is used to guide the airflow to flow from left to right, the second straight line segment is set at an angle to the first straight line segment, and the second straight line segment is used to guide the airflow to incline to the right and then downward, the fourth straight line segment is set in a V-shape with the second straight line segment, and the fourth straight line segment is also used to guide the airflow to incline to the left and then downward, and the third arc segment is used to transitionally connect the second straight line segment and the fourth straight line segment.

[0064] As attached Figure 1 and 3As shown, each auxiliary air inlet duct 3 is arranged on the open side and communicated between the air outlet side of the air inlet cavity 10 and the air outlet 12, and the air outlet side of the air inlet cavity 10 is opposite to the air outlet 12, that is, each auxiliary air inlet duct 3 is formed with the lower shell cover 14, and the air inlet end of each auxiliary air inlet duct 3 is located at the bottom of the air inlet cavity 10, and the auxiliary air inlet duct 3 extends from the bottom of the air inlet cavity 10 from top to bottom to the air outlet 12. The cross section of each auxiliary air inlet cavity 10 is circular, and the auxiliary air inlet duct 3 is a straight air duct.

[0065] The air inlet end of the main air inlet 2 is farthest from the air outlet 12, and the air inlet end of the auxiliary air inlet 11 is closest to the air outlet 12. The length of the main air inlet 2 is greater than that of the auxiliary air inlet 11; the main air inlet 2 is a slender air duct, and the auxiliary air inlet 3 is a short and thick air duct.

[0066] The secondary air intake duct 3 is provided with a valve 31; when the engine speed does not exceed the set speed, the valve 31 is closed, and only the main air intake duct 2 is inhaled, and the main air intake duct 2 is relatively long, has a high charging efficiency, and has a large air intake volume, which can adapt to medium and low speed resonant air intake. When the actual engine speed exceeds the set speed, the valve 31 is opened, and all the main air intake ducts 2 and all the secondary air intake ducts 3 are connected one by one at the air outlet 12, and the main air intake duct 2 and the secondary air intake duct 3 are inhaled at the same time, so that the air intake volume is increased, which can adapt to high-speed inertia air intake.

[0067] The present invention improves the airway structure and flexibly changes the air intake mode, thereby realizing both long-distance air intake and large-diameter air intake, and can adapt to high- and low-speed air intake requirements, with good adaptability.

[0068] As attached Figure 1 and 3 As shown, the air intake structure also includes a guide plate 4 and a plurality of flow diverters 5. The guide plate 4 is fixedly arranged on the closed side of the outer shell 1. At least one curved air duct 21 is formed between the guide plate 4 and the outer shell 1. The curved air duct 21 is formed by connecting the first straight line segment, the second straight line segment and the third arc segment in sequence. All the flow diverters 5 are evenly distributed along the line. Each flow diverter 5 is located in the outer shell 1 and is fixedly arranged at the air outlet 12. Each flow diverter 5 is provided with an auxiliary air intake duct 3 and a guide air duct 22. The auxiliary air intake duct 3 and the guide air duct 22 are cross-connected at one end close to the air outlet 12, wherein the guide air duct 22 is the fourth straight line segment of the main air intake duct 2, and the curved air duct 21 and the guide air duct 22 are connected to form the main air intake duct 2, so that the main air intake duct 2 and the auxiliary air intake duct 3 can achieve at least two different air intake volumes by relying on the diverter 5.

[0069] As attached Figures 4 to 6As shown, the guide plate 4 is a wave-shaped structure, including a plurality of arc-shaped plates 41 with protrusions, and an arc-shaped groove 42 is formed in the arc-shaped plate 41; an abutment plate 43 is integrally connected between two adjacent arc-shaped plates 41; the outer shell 1 includes an upper shell cover 13, and the upper shell cover 13 is provided with a plurality of arc-shaped grooves 131, and a support platform 132 is formed between two adjacent arc-shaped grooves 131. When the upper shell cover 13 is fixedly connected to the guide plate 4, the arc-shaped grooves 42 and the arc-shaped grooves 131 are interlocked to form a curved airway 21; the abutment plate 43 and the support platform 132 are abutted to form a blocking part, and the blocking part is used to separate two adjacent curved airways 21, to ensure that each main air intake duct 2 is independent of each other and does not interfere with each other, so that the airflow of each main air intake duct 2 is stable. As a preferred embodiment, the guide plate 4 is specifically provided with four arc-shaped plates 41, and the four arc-shaped plates 41 are arranged equidistantly. In the direction approaching the air outlet 12 , the distance between two adjacent arc-shaped plates 41 gradually increases.

[0070] As attached Figure 5 As shown, a limiting protrusion 133 and a limiting groove 44 that cooperate with each other are provided between the abutment plate 43 and the support platform 132, which are used to quickly limit the relative position of the guide plate 4 and the upper shell cover 13 during assembly, thereby reducing the difficulty of assembly and improving the assembly efficiency. An airway fastener 6 is provided between the limiting protrusion 133 and the limiting groove 44, so that the guide plate 4 can be detachably fixed on the top of the upper shell cover 13, which is convenient for disassembly and assembly during the inspection or cleaning of the main air inlet 2. The airway fastener 6 is specifically a fastening screw, but is not limited to this. As a preferred embodiment, the limiting protrusion 133 is a cylindrical protrusion provided on the upper shell cover 13, and the limiting groove 44 is a circular arc groove provided on the guide plate 4, and the cylindrical protrusion and the circular arc groove are matched in a concave-convex manner.

[0071] As attached Figure 6 As shown, the guide plate 4 also includes a plurality of air inlet cylinders 45, which are cylindrical. All the air inlet cylinders 45 correspond to all the arc plates 41 one by one and are connected in an integral manner. A contact slope 451 is provided on the side of the air inlet cylinder 45 away from the arc plate 41, and the contact slope 451 abuts against the limiting slope 134 of the upper shell cover 13, and adopts a wedge-shaped matching method, which can be used to limit the airflow direction of the main air inlet duct 2 and improve the sealing between the main air inlet duct 2 and the upper shell cover 13.

[0072] As attached Figure 2 As shown, the flow divider 5 includes a guide tube 51, a guide airway 22 is formed in the center of the guide tube 51, and an airway seal 7 is also provided between the air intake tube 45 and the guide tube 51 to ensure the sealing between the guide plate 4 and the flow divider 5, to avoid air leakage and affect the stability of the intake amount of the main intake duct 2, and to ensure stable and reliable operation of the engine. The airway seal is specifically an O-ring, but is not limited thereto.

[0073] As attached Figure 2As shown, a positioning flange 511 and a positioning groove that cooperate with each other are provided between the air inlet cylinder 45 and the guide cylinder 51, which are used to define the relative positions of the guide plate 4 and the flow diverter 5, so as to facilitate quick assembly. The positioning flange 511 is specifically an annular flange formed on the edge of the guide cylinder 51, and the positioning groove is an annular groove formed on the inner side of the end of the air inlet cylinder 45.

[0074] As attached Fig.10 As shown, the flow splitter 5 also includes an adjusting cylinder 52 integrally connected to the guide cylinder 51, and a secondary air inlet duct 3 is formed at the center of the adjusting cylinder 52, and the central axes of the secondary air inlet duct 3 and the guide air duct 22 intersect in a Y shape. A guide notch 521 is formed on the side of the adjusting cylinder 52 facing the air inlet cavity 10, and the guide notch 521 is used to guide the airflow in the air inlet cavity 10 to flow into the secondary air inlet duct 3, so that the airflow in the air inlet cavity 10 flows to the secondary air inlet duct 3 to the greatest extent.

[0075] As attached Figures 7 to 9 As shown, each valve 31 includes a rotating shaft 311 hinged to the air intake end of the regulating cylinder 52, and the opening of the valve 31 is adjusted by rotating the rotating shaft 311. The air intake structure also includes a driving motor 8 and a speed detection component, and the output shaft 81 of the driving motor 8 is coaxially connected to the rotating shaft 311 of all valves 31. The speed detection component is used to detect the actual speed of the engine, and can be a speed sensor. When the speed detection component finds that the actual speed exceeds the set speed, the speed detection component feeds back a signal to the controller, and the controller sends a signal to the servo motor after judgment and processing. The servo motor drives the rotating shafts 311 of all valves 31 to rotate synchronously to the set angle through the output shaft 81, and automatically opens all valves 31, with a high degree of automation, and the air intake amount of the auxiliary air intake duct 3 is accurately controlled by controlling the opening of the valve 31, so that the air intake amount of the auxiliary air intake duct 3 changes with the change of the engine speed, and the control accuracy is high. When the speed detection component finds that the actual speed does not exceed the set speed, the speed detection component feeds back a signal to the controller. After judgment and processing, the controller sends a signal to the servo motor. The servo motor drives the rotating shafts 311 of all valves 31 to remain different through the output shaft 81, so that all valves 31 remain closed.

[0076] As attached Figure 6 , 8 As shown in FIG. 9 , a cross protrusion and a cross groove 3211 that cooperate with each other are provided between the output shaft 81 and the rotating shaft 311 and between two adjacent rotating shafts 311 to prevent the two adjacent rotating shafts from rotating relative to each other, so that the output shaft 81 drives all the rotating shafts 311 to rotate synchronously.

[0077] As attached Figure 7As shown, the outer shell 1 also includes a lower shell cover 14 detachably connected to the upper shell cover 13. An upper connecting edge 135 is formed on the edge of the upper shell cover 13, and a lower connecting edge 141 is formed on the edge of the lower shell cover 14; the upper connecting edge 135 is integrally provided with a plurality of upper connecting ears 136, and the lower connecting edge 141 is integrally provided with a plurality of lower connecting ears, all of the upper connecting ears 136 are opposite to all of the lower connecting ears and are connected through the shell cover fastener 15, so as to facilitate the disassembly of the outer shell 1 during maintenance. The shell cover fastener 15 can be a fastening screw. A mutually matching snap-fitting flange 1351 and a snap-fitting groove are formed between the upper connecting edge 135 and the lower connecting edge 141 to ensure the rapid assembly of the upper shell cover 13 and the lower shell cover 14 and improve the assembly accuracy of the two. A shell cover seal 16 is provided between the snap-fitting flange 1351 and the snap-fitting groove to improve the sealing between the upper shell cover 13 and the lower shell cover 14 to prevent air leakage from affecting the air intake of the engine.

[0078] Any two adjacent rotating shafts 311 are coaxially connected via a connecting shaft 312, and the connecting shaft 312 may be an integrated structure or a split structure connected via a cross connector. Figures 7 to 9 As shown, the lower shell cover 14 is provided with a hinge support 9 for supporting the connecting shaft 312. The connecting shaft 312 can be provided with a bearing for supporting the connecting shaft 312 to rotate relative to the hinge support 9, reducing the friction between the connecting shaft 312 and the hinge support 9, and achieving the purpose of noise reduction. The hinge support 9 is a split structure, including a front clamping plate 91 and a rear clamping plate arranged opposite to each other, which is convenient for maintenance and assembly. The front clamping plate 91 and the rear clamping plate are fixedly connected by a clamping plate fastener 93; one of the front clamping plate 91 and the rear clamping plate 92 is provided with a buckle 94, and the other is provided with a clamping hole matched with the buckle 94, ensuring that the front clamping plate 91 and the rear clamping plate are reliably connected.

[0079] An embodiment of the present invention also discloses a motorcycle, comprising an engine and the above-mentioned air intake structure, wherein the air intake structure is used to intake air into the engine, the air intake volume of the engine is variable, the adaptability scenarios of the motorcycle are increased, and the adaptability is better.

[0080] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0081] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An air intake structure, characterized in that: include: An outer shell (1), wherein an air inlet cavity (10) is formed in the outer shell (1), wherein two opposite sides of the air inlet cavity (10) are an open side and a closed side, respectively, and the open side is provided with an air inlet (11) and an air outlet (12); at least one main air inlet passage (2) and at least one auxiliary air inlet passage (3) are formed in the outer shell (1); each of the main air inlet passages (2) is provided on the closed side and communicates between the air inlet side of the air inlet cavity (10) and the air outlet (12), and each of the auxiliary air inlet passages (3) is provided on the open side and communicates between the air outlet side of the air inlet cavity (10) and the air outlet (12); the air inlet side is opposite to the air inlet (11), and the air outlet side is opposite to the air outlet (12); Each of the secondary air intake passages (3) is provided with a valve (31); when the actual speed of the engine exceeds a set speed, the valve (31) opens, and all of the main air intake passages (2) and all of the secondary air intake passages (3) are connected in a one-to-one correspondence at the air outlet (12); otherwise, the valve (31) closes.

2. The air intake structure according to claim 1, characterized in that: Also includes: A guide plate (4), the guide plate (4) being fixedly arranged on the closed side of the outer shell (1), and at least one curved air passage (21) being formed between the guide plate (4) and the outer shell (1); A plurality of flow dividers (5), the flow dividers (5) being located in the outer shell (1) and fixedly mounted on the air outlet (12), each of the flow dividers (5) being provided with the auxiliary air inlet duct (3) and the guide air duct (22), the auxiliary air inlet duct (3) and the guide air duct (22) being cross-connected at one end close to the air outlet (12); the curved air duct (21) and the guide air duct (22) being connected to form the main air inlet duct (2).

3. The air intake structure according to claim 2, characterized in that: The guide plate (4) comprises a plurality of arc-shaped plates (41) with protrusions, an arc-shaped groove (42) is formed in the arc-shaped plates (41), and an abutment plate (43) is integrally connected between two adjacent arc-shaped plates (41); the outer shell (1) comprises an upper shell cover (13), the upper shell cover (13) is provided with a plurality of circular arc grooves (131), and a support platform (132) is formed between two adjacent circular arc grooves (131); when the upper shell cover (13) and the guide plate (4) are fixedly connected, the arc-shaped groove (42) and the circular arc groove (131) are interlocked to form the curved airway (21); the abutment plate (43) and the support platform (132) are abutted to form a blocking portion, and the blocking portion is used to separate two adjacent curved airways (21).

4. The air intake structure according to claim 3, characterized in that: A limiting protrusion (133) and a limiting groove (44) that cooperate with each other are provided between the abutment plate (43) and the support platform (132), and an airway fastener (6) is provided between the limiting protrusion (133) and the limiting groove (44).

5. The air intake structure according to claim 3, characterized in that: The guide plate (4) further comprises a plurality of air inlet cylinders (45), all of the air inlet cylinders (45) corresponding one to one with all of the arc-shaped plates (41) and being integrally connected; abutting inclined surfaces (451) are provided on the side of the air inlet cylinders (45) away from the arc-shaped plates (41), and the abutting inclined surfaces (451) abut against the limiting inclined surfaces (134) of the upper shell cover (13).

6. The air intake structure according to claim 5, characterized in that: The flow splitter (5) comprises a flow guide cylinder (51), the flow guide airway (22) being formed at the center of the flow guide cylinder (51), and an airway sealing member (7) is also provided between the air inlet cylinder (45) and the flow guide cylinder (51).

7. The air intake structure according to claim 6, characterized in that: A positioning flange (511) and a positioning groove that cooperate with each other are provided between the air inlet cylinder (45) and the guide cylinder (51).

8. The air intake structure according to claim 5, characterized in that: The flow splitter (5) further comprises an adjusting cylinder (52) integrally connected to the flow guide cylinder (51); the auxiliary air inlet duct (3) is formed at the center of the adjusting cylinder (52); the central axes of the auxiliary air inlet duct (3) and the flow guide duct (22) intersect in a Y shape; a flow guide notch (521) is formed on a side of the adjusting cylinder (52) facing the air inlet cavity (10); the flow guide notch (521) is used to guide the airflow in the air inlet cavity (10) to flow into the auxiliary air inlet duct (3).

9. The air intake structure according to claim 8, characterized in that: Each of the valves (31) comprises a rotating shaft (311) hinged to the air inlet end of the regulating cylinder (52); and further comprises: A driving motor (8), wherein an output shaft (81) of the driving motor (8) is coaxially connected to the rotating shafts (311) of all the valves (31); A rotation speed detection component, the rotation speed detection component is used to detect the actual rotation speed of the engine; When the actual speed detected by the speed detection component exceeds the set speed, the controller is used to control the servo motor to drive the rotating shafts (311) of all the valves (31) to rotate synchronously at a set angle according to the signal fed back by the speed detection component.

10. The air intake structure according to claim 9, characterized in that: Mutually matching cross protrusions and cross grooves (3211) are provided between the output shaft (81) and the rotating shaft (311), as well as between two adjacent rotating shafts (311).

11. The air intake structure according to claim 9, characterized in that: The outer shell (1) further comprises a lower shell cover (14) detachably connected to the upper shell cover (13); an upper connecting edge (135) is formed on the edge of the upper shell cover (13), and a lower connecting edge (141) is formed on the edge of the lower shell cover (14); the upper connecting edge (135) is integrally provided with a plurality of upper connecting ears (136), and the lower connecting edge (141) is integrally provided with a plurality of lower connecting ears, and all of the upper connecting ears (136) are opposite to all of the lower connecting ears one by one and are connected via a shell cover fastener (15); a mutually matching snap-fitting flange (1351) and a snap-fitting groove are formed between the upper connecting edge (135) and the lower connecting edge (141), and a shell cover seal (16) is provided between the snap-fitting flange (1351) and the snap-fitting groove.

12. The air intake structure according to claim 11, characterized in that: Any two adjacent rotating shafts (311) are coaxially connected via a connecting shaft (312); the lower shell cover (14) is provided with a hinge support (9) for supporting the connecting shaft (312); the hinge support (9) comprises a front clamping plate (91) and a rear clamping plate (92) arranged opposite to each other, the front clamping plate (91) and the rear clamping plate (92) being fixedly connected via a clamping plate fastener (93); one of the front clamping plate (91) and the rear clamping plate (92) is provided with a buckle (94), and the other is provided with a buckle hole matching the buckle (94).

13. A motorcycle, characterized in that: The invention comprises an engine and the air intake structure according to any one of claims 1 to 12, wherein the air intake structure is used to intake air into the engine.

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