Air inlet structure and motorcycle

Abstract

The invention provides an air inlet structure and a motorcycle. The air inlet structure comprises a hard pipe, a first connecting pipe and a second connecting pipe. The hard tube is fixed on the frame side tube, the hard tube comprises a first section, a second section and a third section which are communicated in sequence, the first section is located on the inner side of the frame side tube, and the third section is located on the outer side of the frame side tube. One end of the first connecting pipe is communicated with the first section, and the other end is communicated with a frame main pipe. One end of the second connecting pipe is communicated with the third section, and the other end is communicated with a clutch. According to the air inlet structure, the hard pipe is fixed to the frame side pipe, the first connecting pipe and the second connecting pipe can be fixed and positioned, the mounting position precision of the first connecting pipe and the second connecting pipe is guaranteed, and the reliability of the air inlet structure is improved. In addition, the air inlet structure is communicated with the frame main pipe, a connector does not need to be arranged on the frame side pipe, the influence on the strength and rigidity of the frame side pipe is small, meanwhile, the occupied space of the outer side of the frame side pipe is small, and the practicability of the air inlet structure is improved.

Description

Technical Field

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

[0002] At present, the clutch and frame of a motorcycle need to be connected by air pipes, and there are two commonly used air pipe connection methods. The first is to use a long rubber air pipe, the two ends of which are connected to the frame main pipe and the clutch respectively, but the length of the long rubber air pipe is too long, the middle position accuracy is poor, there is a problem of friction with the frame, and it is limited by the production process of the long rubber air pipe. The second is to use a short rubber air pipe, the two ends of the short rubber air pipe are connected to the frame side pipe and the clutch respectively, but the frame side pipe needs to be designed with a separate rubber pipe connector, which has a great impact on the strength and stiffness of the frame side pipe, and at the same time occupies a large left and right space, which is not conducive to the inward position of the leg position of the whole vehicle. Summary of the invention

[0003] Based on this, it is necessary to provide an air intake structure and a motorcycle to address the problems in the above two air pipe connection methods.

[0004] The technical solution is as follows:

[0005] On the one hand, an air intake structure is provided, which is applied to a motorcycle, comprising:

[0006] A hard tube, the hard tube is fixed on the frame side tube, the hard tube comprises a first section, a second section and a third section which are connected in sequence, the first section is located on the inner side of the frame side tube, and the third section is located on the outer side of the frame side tube;

[0007] A first connecting pipe, one end of which is connected to the first section, and the other end of which is connected to the frame main pipe;

[0008] A second connecting pipe, one end of which is connected to the third section, and the other end of which is used to connect to the clutch.

[0009] The technical solution is further described below:

[0010] In one embodiment, the first section extends toward the direction close to the frame main tube, and the axis of the first section is set at an angle with the axis of the second section. The third section extends toward the direction close to the clutch, and the axis of the third section is set at an angle with the axis of the second section.

[0011] In one of the embodiments, a first fixing portion is provided on an outer side wall of the second section on a side close to the main tube of the frame, and the first fixing portion is used for fixed connection with the side tube of the frame.

[0012] In one embodiment, the outer side wall of the first section is provided with a first limiting portion, and the first limiting portion is used for correspondingly limiting cooperation with the end surface of the first connecting tube when the first section extends into the first connecting tube.

[0013] In one of the embodiments, the outer side wall of the third section is provided with a second fixing portion, and the second fixing portion is used for fixedly connecting with the side tube of the frame.

[0014] In one embodiment, a second limiting portion is provided on the outer wall of the third section, and a third limiting portion is provided on the end of the second connecting tube away from the clutch, and the third limiting portion is used to cooperate with the second limiting portion when the third section extends into the second connecting tube.

[0015] In one embodiment, the air intake structure further includes a first locking member, which is used to lock the third section with the second connecting pipe when the third section extends into the second connecting pipe, so that the third section and the second connecting pipe maintain a sealed connection.

[0016] In one embodiment, an end of the third section close to the second connecting tube is set as the first end, and an end of the second connecting tube close to the third section is set as the second end. The first end is sealed and connected to the second end, and both are set in a flat shape. The width of the first end is smaller than the height of the first end, and the width of the second end is smaller than the height of the second end.

[0017] In one embodiment, the outer side wall of the first connecting tube is provided with a third fixing portion, and the third fixing portion is used to be fixedly connected to the pedal structure on the side tube of the frame.

[0018] On the other hand, a motorcycle is provided, comprising a frame side pipe, a frame main pipe, a clutch and the air intake structure, wherein the air intake structure is fixed to the frame side pipe and connected to the frame main pipe and the clutch.

[0019] Compared with the air intake structure in the prior art, the air intake structure in the present application has at least the following advantages: 1. The air intake structure in the present application is assembled by a hard pipe, a first connecting pipe and a second connecting pipe, and the length of a single pipe is small, which is convenient for processing and production. 2. The hard pipe is fixed on the frame side pipe, which can play a role in fixing and positioning the first connecting pipe and the second connecting pipe, ensuring the installation position accuracy of the first connecting pipe and the second connecting pipe, and improving the reliability of the air intake structure. 3. The air intake structure is connected to the frame main pipe, and there is no need to set a connector on the frame side pipe, which has little effect on the strength and rigidity of the frame side pipe. At the same time, the first section and the first connecting pipe are located on the inner side of the frame side pipe, occupying a small space outside the frame side pipe, thereby improving the practicality of the air intake structure. 4. The corners of the air intake structure can be arranged at the connection between the first section and the second section, and at the connection between the second section and the third section, so that the number of corners on the first connecting pipe and the second connecting pipe is reduced, the difficulty of designing the production mold of the first connecting pipe and the second connecting pipe is reduced, and the difficulty of the production process of the air intake structure is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] FIG. 1 is a schematic diagram of the structure of an air intake structure after installation and connection according to an embodiment.

[0023] FIG. 2 is a schematic structural diagram of the air intake structure of FIG. 1 after being fixedly connected to the pedal structure.

[0024] FIG. 3 is a partial enlarged view of portion A in FIG. 2 .

[0025] FIG. 4 is a partial enlarged view of portion B in FIG. 2 .

[0026] Description of reference numerals:

[0027] 10. Intake structure; 100. Hard pipe; 110. First section; 120. Second section; 130. Third section; 131. First end; 140. First fixing part; 150. First limiting part; 160. Second fixing part; 170. Second limiting part; 200. First connecting pipe; 210. Third fixing part; 300. Second connecting pipe; 310. Third limiting part; 321. Second end; 400. First locking member; 20. Frame side pipe; 30. Frame main pipe; 40. Clutch; 50. Pedal structure. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] As shown in FIG1 , in one embodiment, a motorcycle is provided, comprising a frame side pipe 20, a frame main pipe 30, a clutch 40 and an air intake structure 10, wherein the air intake structure 10 is fixed to the frame side pipe 20 and communicates with the frame main pipe 30 and the clutch 40. In this way, the clutch 40 can be inhaled through the air intake structure 10 and the frame main pipe 30, thereby improving the practicality of the motorcycle.

[0030] Specifically in this embodiment, the air intake structure 10 is communicated with the air intake port on the clutch cover of the clutch 40. The air intake port is located on a side of the clutch cover close to the frame main pipe 30 (ie, located on the front side of the clutch cover).

[0031] As shown in FIG1 , an air intake structure 10 is provided in one embodiment, comprising a hard pipe 100, a first connecting pipe 200 and a second connecting pipe 300. The hard pipe 100 is fixed to the frame side pipe 20, and the hard pipe 100 comprises a first section 110, a second section 120 and a third section 130 which are connected in sequence, the first section 110 is located on the inner side of the frame side pipe 20, and the third section 130 is located on the outer side of the frame side pipe 20. One end of the first connecting pipe 200 is connected to the first section 110, and the other end is used to be connected to the frame main pipe 30. One end of the second connecting pipe 300 is connected to the third section 130, and the other end is used to be connected to the clutch 40.

[0032] Compared with the air intake structure in the prior art, the air intake structure 10 in the present application has at least the following advantages: 1. The air intake structure 10 in the present application is assembled by a hard tube 100, a first connecting tube 200 and a second connecting tube 300, and the length of a single tube is small, which is convenient for processing and production. 2. The hard tube 100 is fixed on the frame side tube 20, which can play a role in fixing and positioning the first connecting tube 200 and the second connecting tube 300, ensure the installation position accuracy of the first connecting tube 200 and the second connecting tube 300, and improve the reliability of the air intake structure 10. 3. The air intake structure 10 is connected with the frame main tube 30, and there is no need to set a connector on the frame side tube 20, which has little effect on the strength and rigidity of the frame side tube 20. At the same time, the first section 110 and the first connecting tube 200 are located on the inner side of the frame side tube 20, occupying a small space outside the frame side tube 20, thereby improving the practicality of the air intake structure 10. 4. The corners of the air intake structure 10 can be arranged at the connection between the first section 110 and the second section 120, and at the connection between the second section 120 and the third section 130, so that the number of corners on the first connecting tube 200 and the second connecting tube 300 is reduced, the difficulty of designing the production molds of the first connecting tube 200 and the second connecting tube 300 is reduced, and the difficulty of the production process of the air intake structure 10 is improved.

[0033] The inner side of the frame side tube 20 refers to the side of the frame side tube 20 close to the frame main tube 30 along the horizontal direction. The outer side of the frame side tube 20 refers to the side of the frame side tube 20 away from the frame main tube 30 along the horizontal direction. Specifically in this embodiment, the motorcycle has two frame side tubes 20, the area between the two frame side tubes 20 is the inner side of the frame side tube 20, and the area outside the two frame side tubes 20 is the outer side of the frame side tube 20.

[0034] The hard tube 100 can be mounted on the frame side tube 20 by means of clamping, screwing, bonding or other fixed connection methods. The first section 110 can be sealed and connected with the first connecting tube 200 by means of threaded fitting, interference fitting or other sealing connection methods. The third section 130 can be sealed and connected with the second connecting tube 300 by means of screwing, clamping, interference fitting or other sealing connection structures.

[0035] As shown in FIG1 , specifically in this embodiment, the second section 120 is located above the frame side tube 20. In this way, the frame side tube 20 can support the hard tube 100, thereby improving the convenience of installing the air intake structure 10. In other embodiments, the second section 120 can also be located below the frame side tube 20.

[0036] As shown in FIG. 1 , optionally, the first section 110 extends toward the direction close to the frame main tube 30, and the axis of the first section 110 is set at an angle with the axis of the second section 120, and the third section 130 extends toward the direction close to the clutch 40, and the axis of the third section 130 is set at an angle with the axis of the second section 120. In this way, the hard tube 100 is Z-shaped, that is, the corner in the air intake structure 10 is located on the hard tube 100, so that the number of corners on the first connecting tube 200 and the second connecting tube 300 is reduced, the difficulty of designing the production mold of the first connecting tube 200 and the second connecting tube 300 is reduced, and the difficulty of the production process of the air intake structure 10 is improved.

[0037] The angle between the axis of the first section 110 and the axis of the second section 120 , and the angle between the axis of the third section 130 and the axis of the second section 120 can be flexibly adjusted according to actual needs.

[0038] Specifically in this embodiment, the first connecting tube 200 and the second connecting tube 300 can be set as rubber tubes, which can be produced by ordinary injection molding. The hard tube 100 can be set as a plastic tube, which is blow molded.

[0039] As shown in Fig. 1, Fig. 2 and Fig. 3, in one embodiment, the outer side wall of the second section 120 close to the frame main pipe 30 is provided with a first fixing portion 140, and the first fixing portion 140 is used to be fixedly connected to the frame side pipe 20. In this way, the first fixing portion 140 is located in the angled area formed by the first section 110 and the second section 120, without occupying additional installation space, thereby improving the practicality of the air intake structure 10.

[0040] Specifically in the embodiment, the first fixing portion 140 is configured as a first mounting lug. The first mounting lug is integrally formed with the second section 120 and is fixed to the frame side tube 20 by bolts.

[0041] As shown in Fig. 1 and Fig. 3, optionally, the outer side wall of the first section 110 is provided with a first limiting portion 150, and the first limiting portion 150 is used to limit and cooperate with the end surface of the first connecting tube 200 when the first section 110 extends into the first connecting tube 200. In this way, the first limiting portion 150 can play a limiting role, ensuring that the first section 110 can quickly and accurately extend into the first connecting tube 200 by a first preset length, thereby ensuring the sealing performance between the first section 110 and the first connecting tube 200, and improving the convenience and reliability of the air intake structure 10.

[0042] The first limiting portion 150 may be configured as a limiting seat, a limiting column, a limiting protrusion or other limiting structures. Specifically in this embodiment, the first limiting portion 150 is configured as a limiting ring, and the limiting ring is disposed along the circumference of the first section 110 .

[0043] As shown in Fig. 1, Fig. 2 and Fig. 4, in one embodiment, the outer side wall of the third section 130 is provided with a second fixing portion 160, and the second fixing portion 160 is used to be fixedly connected to the frame side tube 20. In this way, the third section 130 can be closely attached to the frame side tube 20 to reduce the space outside the frame side tube 20 and improve the practicality of the air intake structure 10.

[0044] Specifically in this embodiment, the second fixing portion 160 can be configured as a second mounting ear, which is located above the third section 130 and is integrally formed with the third section 130 . The second mounting ear is fixed to the outer wall of the frame side tube 20 by bolts.

[0045] As shown in FIG. 1 and FIG. 4 , optionally, the outer side wall of the third section 130 is provided with a second limiting portion 170, and the end of the second connecting pipe 300 away from the clutch 40 is provided with a third limiting portion 310, and the third limiting portion 310 is used to cooperate with the second limiting portion 170 when the third section 130 extends into the second connecting pipe 300. In this way, the second limiting portion 170 and the third limiting portion 310 can cooperate to play a limiting role, ensuring that the third section 130 can quickly and accurately extend into the second connecting pipe 300 by a second preset length, thereby ensuring the sealing performance between the third section 130 and the second connecting pipe 300, and improving the convenience and reliability of the intake structure 10.

[0046] Among them, the second limiting portion 170 can be set as a limiting seat, a limiting protrusion or other limiting structures. The third limiting portion 310 can be correspondingly set as a limiting seat, a limiting groove or other limiting structures. The number of the second limiting portion 170 and the third limiting portion 310 can be flexibly adjusted according to the needs of actual use. Specifically in this embodiment, the second fixing portion 160 is located on the side of the second limiting portion 170 close to the second section 120. The second limiting portion 170 is set as a limiting protrusion. The third limiting portion 310 is set as a convex block, and a limiting groove corresponding to the limiting protrusion is provided on the side of the convex block away from the clutch 40. When the third section 130 extends into the second connecting pipe 300 by a second preset length, the limiting protrusion cooperates with the inner wall of the limiting groove.

[0047] As shown in FIG. 1 and FIG. 4 , the air intake structure 10 may further include a first locking member 400, which is used to lock the third section 130 with the second connecting tube 300 when the third section 130 extends into the second connecting tube 300, so that the third section 130 and the second connecting tube 300 are kept in sealed communication. In this way, the reliability of the air intake structure 10 is improved.

[0048] Specifically in this embodiment, an annular groove is provided on the outer wall of the end of the second connecting tube 300 away from the clutch 40. The first locking member 400 is configured as a clamp. When the third section 130 extends into the second connecting tube 300 by a second preset length, the clamp is installed in the annular groove so as to seal and fix the end of the second connecting tube 300 away from the clutch 40 on the outer wall of the third section 130.

[0049] As shown in FIG. 1 and FIG. 4 , optionally, one end of the third section 130 close to the second connecting tube 300 is set as the first end 131, and one end of the second connecting tube 300 close to the third section 130 is set as the second end 321. The first end 131 is sealed and communicated with the second end 321, and both are set in a flat shape. The width of the first end 131 is smaller than the height of the first end 131, and the width of the second end 321 is smaller than the height of the second end 321. In this way, the outer space of the frame side tube 20 occupied by the air intake structure 10 can be further reduced, and the practicality of the air intake structure 10 can be improved.

[0050] As shown in FIG. 1 and FIG. 3 , in one embodiment, the outer side wall of the first connecting tube 200 is provided with a third fixing portion 210, and the third fixing portion 210 is used to be fixedly connected to the footrest structure 50 on the frame side tube 20. In this way, the footrest structure can play a role in fixing and positioning the first connecting tube 200, ensure the installation position accuracy of the first connecting tube 200, and improve the reliability of the intake structure 10.

[0051] The third fixing portion 210 can be mounted on the pedal structure 50 by snap connection, screw connection, bonding or other fixed connection methods. Specifically in this embodiment, the third fixing portion 210 is provided with a slot extending in the horizontal direction, and the pedal structure 50 is provided with a tongue that is plugged into the slot.

[0052] Specifically in this embodiment, the vehicle frame includes a frame side tube 20 and a frame main tube 30 .

[0053] In one embodiment, the pedal structure 50 includes a pedal bracket and a counterweight. The pedal bracket is mounted on the frame and used to support the pedal. The counterweight is mounted on the pedal bracket and used to adjust the vibration frequency on the pedal bracket. In this way, when the pedal structure 50 is used, the counterweight can be installed at the corresponding position of the pedal bracket according to the vibration distribution and frequency on the frame, so that the pedal bracket can adjust the vibration frequency transmitted from the frame and then transmit it to the pedal, ensuring that the vibration frequency at the pedal is in a comfortable range, thereby improving the comfort of the vehicle.

[0054] The number, shape and material of the weight piece can be flexibly adjusted according to the actual use requirements. The weight piece can be installed on the pedal bracket by screw connection, clamp connection, hoop connection, adhesive connection or other connection methods.

[0055] Specifically in this embodiment, the counterweight is located at the bottom of the pedal bracket. In this way, the counterweight is hidden under the pedal bracket, ensuring that the counterweight does not interfere with surrounding components, thereby improving the reliability of the pedal structure 50. In other embodiments, the counterweight may also be installed on the side of the pedal bracket or other locations.

[0056] Furthermore, the pedal bracket is provided with at least one fourth fixing portion, each of which is arranged along the extension direction of the pedal bracket, and at least one counterweight is provided, each of which can be selectively installed on each fourth fixing portion. In this way, the installation position and number of the counterweight can be flexibly adjusted according to the actual use needs, ensuring that the vibration frequency at the pedal can be adjusted to a comfortable range, thereby improving the reliability and practicality of the pedal structure 50.

[0057] It should be noted that each fourth fixing portion may be provided with no counterweight, one counterweight, or multiple counterweights. Specifically in this embodiment, the counterweight is detachably installed at the fourth fixing portion.

[0058] Optionally, the pedal bracket includes a fourth section, a fifth section, and a sixth section, the fourth section and the sixth section are spaced apart, the fifth section is connected to the fourth section and the sixth section, and the fourth section, the fifth section, and the sixth section are all provided with a fourth fixing portion. In this way, each part of the pedal bracket is provided with a fourth fixing portion, so that the adjustment range of the vibration frequency of the pedal structure 50 is increased, ensuring that the vibration frequency at the pedal can be adjusted to a comfortable range, and improving the reliability and practicality of the pedal structure 50.

[0059] The number of the fifth section can be flexibly adjusted according to the actual use needs. The number and position of the fourth fixing parts on the fourth section, the fifth section and the sixth section can be flexibly adjusted according to the actual use needs. Specifically in this embodiment, the pedal bracket is injection molded. The two ends of the fifth section are respectively connected to the fourth section and the sixth section to form a C shape. In other embodiments, the pedal bracket can also be in an I-shaped, a square-shaped or a well-shaped shape.

[0060] In one embodiment, the pedal structure 50 further includes at least one second locking member, which is used to lock the counterweight member to the fourth fixing portion. In this way, the second locking member can lock the counterweight member and the pedal bracket as a whole, ensuring that the counterweight member will not loosen relative to the pedal bracket during use, thereby improving the reliability of the pedal structure 50.

[0061] The number of the second locking members can be flexibly adjusted according to the number of the counterweight members. The second locking member can be configured as a clamp, a locking bolt or other locking structures.

[0062] Optionally, the fourth fixing portion is provided with a first fixing hole, the counterweight is provided with a second fixing hole corresponding to the first fixing hole, and the second locking member includes a bolt and a nut, the bolt passes through the first fixing hole and the second fixing hole, and is threadedly connected with the nut to lock the counterweight to the fourth fixing portion. In this way, the convenience of assembling the pedal structure 50 is improved.

[0063] Among them, the number of first fixing holes at each fourth fixing part and the number of second fixing holes on each counterweight can be flexibly adjusted according to the actual use needs. Specifically in this embodiment, two first fixing holes are provided at each fourth fixing part, two second fixing holes are provided on each counterweight, the number of second locking members is twice the number of counterweights, and each second locking member is provided corresponding to each second fixing hole. In this way, it is ensured that the counterweight will not rotate around the axis of the bolt, and the reliability of the pedal structure 50 is improved.

[0064] The pedal structure 50 can be installed on the frame by screwing, clamping, plugging, hooping or other connection methods. The foot pedal can be installed on the pedal structure 50 by screwing, clamping, plugging, hooping or other connection methods.

[0065] In one embodiment, the pedal bracket is provided with at least one fifth fixing portion, and each fifth fixing portion is used for detachably connecting with the frame, so as to improve the convenience of installation between the pedal structure 50 and the frame.

[0066] The number of the fifth fixing parts can be flexibly adjusted according to the actual use requirements. Specifically in this embodiment, the number of the fifth fixing parts is four, and the four fifth fixing parts are respectively installed at both ends of the fourth section and the sixth section.

[0067] In one embodiment, the footrest bracket is provided with at least one sixth fixing portion, and each sixth fixing portion is used for detachably connecting with the footrest, so as to improve the convenience of installation between the footrest structure 50 and the footrest.

[0068] The number of the sixth fixing parts can be flexibly adjusted according to actual use requirements. Specifically in this embodiment, the number of the sixth fixing parts is four, and the four sixth fixing parts are respectively installed at both ends of the fourth section and the sixth section.

[0069] The pedal bracket can be connected to the air intake structure 10 by screwing, clamping, plugging, gluing or other methods. Specifically in this embodiment, the pedal bracket and the frame can be made of different materials (for example, the pedal bracket can be made of aluminum alloy or plastic material) so that the pedal bracket can be designed with a complex shape to facilitate wiring and piping.

[0070] In one embodiment, the pedal bracket is provided with a seventh fixing portion, and the seventh fixing portion is used to connect with the third fixing portion 210. In this way, the pedal bracket can play a role in fixing and positioning the air intake structure 10, ensure the installation position accuracy of the air intake structure 10, and improve the practicality of the pedal structure 50.

[0071] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0072] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0073] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; 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 the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0074] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0075] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0076] It should also be understood that when explaining the connection relationship or positional relationship of elements, although not explicitly described, the connection relationship and positional relationship are interpreted as including an error range, which should be within the acceptable deviation range of a specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" may mean within one or more standard deviations, which are not limited here.

[0077] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An air intake structure, applied to a motorcycle, characterized in that: include: A hard tube, the hard tube is fixed on the frame side tube, the hard tube comprises a first section, a second section and a third section which are connected in sequence, the first section is located on the inner side of the frame side tube, and the third section is located on the outer side of the frame side tube; A first connecting pipe, one end of which is connected to the first section, and the other end of which is connected to the frame main pipe; A second connecting pipe, one end of which is connected to the third section, and the other end of which is used to connect to the clutch.

2. The air intake structure according to claim 1, characterized in that: The first section extends toward the direction close to the frame main tube, and the axis of the first section is set at an angle with the axis of the second section. The third section extends toward the direction close to the clutch, and the axis of the third section is set at an angle with the axis of the second section.

3. The air intake structure according to claim 1, characterized in that: The outer side wall of the second section close to the main tube of the frame is provided with a first fixing portion, and the first fixing portion is used for fixed connection with the side tube of the frame.

4. The air intake structure according to claim 1, characterized in that: The outer side wall of the first section is provided with a first limiting portion, and the first limiting portion is used for correspondingly limiting cooperation with the end surface of the first connecting tube when the first section extends into the first connecting tube.

5. The air intake structure according to claim 1, characterized in that: The outer side wall of the third section is provided with a second fixing portion, and the second fixing portion is used for being fixedly connected to the side tube of the frame.

6. The air intake structure according to claim 1, characterized in that: A second limiting portion is provided on the outer side wall of the third section, and a third limiting portion is provided on one end of the second connecting tube away from the clutch, and the third limiting portion is used to cooperate with the second limiting portion when the third section extends into the second connecting tube.

7. The air intake structure according to claim 1, characterized in that: The air intake structure further includes a first locking member, which is used to lock the third section with the second connecting pipe when the third section extends into the second connecting pipe, so that the third section and the second connecting pipe maintain sealed communication.

8. The air intake structure according to claim 1, characterized in that: One end of the third section close to the second connecting tube is set as the first end, and one end of the second connecting tube close to the third section is set as the second end. The first end is sealed and connected to the second end, and both are set in a flat shape. The width of the first end is smaller than the height of the first end, and the width of the second end is smaller than the height of the second end.

9. The air intake structure according to any one of claims 1 to 8, characterized in that: The outer side wall of the first connecting tube is provided with a third fixing portion, and the third fixing portion is used for fixedly connecting with the pedal structure on the side tube of the frame.

10. A motorcycle, characterized in that: It comprises a frame side pipe, a frame main pipe, a clutch and an air intake structure as claimed in any one of claims 1 to 9, wherein the air intake structure is fixed on the frame side pipe and connected to the frame main pipe and the clutch.

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