Frame and bicycle

Abstract

The embodiment of the utility model provides a bicycle frame and a bicycle. The bicycle frame comprises a head tube, a seat tube, a lower tube, a rear bottom fork, a rear lower fork and a reinforcing piece. The head tube is used for installing a handlebar. The seat tube is at least used for installing a seat. The lower tube is disposed between the head tube and the seat tube, and is connected to the bottom of the seat tube and the head tube. The rear fork comprises a first end and a second end which are oppositely arranged. The first end is connected with the bottom of the seat tube. The second end extends in the direction away from the lower pipe. The rear lower fork is connected with the seat tube and the second end of the rear bottom fork, and an included angle is formed between the rear lower fork and the rear bottom fork. And the reinforcing piece is connected with the seat tube and the lower tube so as to increase the flexural rigidity of the frame. An area for a user to hold is defined among the reinforcing piece, the lower tube and the seat tube. By means of the arrangement, the reinforcing piece has the function of a handle and can be conveniently used when a user carries and moves the bicycle, the bending resistance of the connecting position of the lower pipe and the seat pipe can be enhanced, and the overall load capacity and durability of the bicycle frame are remarkably improved.

Description

Technical Field

[0001] The embodiments disclosed herein generally relate to the field of cycling equipment, and more particularly to a frame and a bicycle. Background Technology

[0002] With economic and social development, bicycles and electric bikes have become increasingly popular choices for transportation due to their environmental friendliness and convenience. In the bicycle manufacturing process, most bicycles use a segmented tubing welding method to create the frame. This process places high demands on the technical skills of the operators, the equipment used, and the quality of the materials, making it difficult to effectively control the yield rate. Furthermore, frames manufactured using other processes also suffer from poor strength and durability at the joints, making them prone to fatigue fracture and affecting the overall safety and lifespan of the vehicle. Utility Model Content

[0003] The purpose of the embodiments disclosed herein is to provide a frame and a bicycle that at least partially solve the above-mentioned problems and other potential problems.

[0004] In a first aspect of this disclosure, a bicycle frame is provided. The frame includes: a head tube for mounting handlebars; a seat tube for mounting a saddle; a down tube disposed between the head tube and the seat tube and connected to the bottom of the seat tube and the head tube; a rear swingarm including a first end and a second end disposed opposite to each other, the first end being connected to the bottom of the seat tube and the second end extending in a direction away from the down tube; a chainstay connected to the second end of the seat tube and the rear swingarm and having an angle with the chainstay; and a reinforcement connected to the seat tube and the down tube to increase the bending stiffness of the frame and defining an area for a user to grip between the reinforcement, the down tube, and the seat tube.

[0005] In some embodiments, a first threading hole is provided on the side of the head tube away from the lower tube, the first threading hole is in communication with the interior of the head tube, and the interior of the head tube is in communication with the interior of the lower tube.

[0006] In some embodiments, the frame further includes a shield disposed around at least a portion of the edge of the first wiring hole and connected to the head tube to prevent liquid from entering the interior of the head tube through the first wiring hole.

[0007] In some embodiments, the frame further includes a basket connector disposed on the side of the head tube away from the down tube and connected to the head tube.

[0008] In some embodiments, the frame further includes a bottom bracket tube disposed at the bottom of the seat post and connected to the seat post, the bottom bracket tube being used to mount the pedal assembly.

[0009] In some embodiments, a receiving cavity for wiring is provided at the connection between the lower tube and the seat tube, and the receiving cavity communicates with the interior of the lower tube and the interior of the seat tube.

[0010] In some embodiments, a first connecting portion is provided on the outer side of the bottom bracket tube, and the frame further includes a first cover disposed between the two branches of the rear swingarm and connected to the first connecting portion to cover the cable inside the receiving cavity.

[0011] In some embodiments, the seatpost includes a first cavity and a second cavity, wherein the second cavity is closer to the chainstay than the first cavity, the first cavity is used to mount the saddle, the second cavity is used to arrange cables electrically connected to the control components, and the frame also includes a mounting plate disposed between the two branches of the chainstay and connected to the chainstay, the mounting plate being used to mount the control components.

[0012] In some embodiments, the first cover includes a first support portion, the mounting plate includes a second support portion, and the first and second support portions are used to fix the mudguard.

[0013] In some embodiments, the second support includes a limiting groove disposed on the side of the mounting plate facing the seat tube.

[0014] In some embodiments, a second cable hole is provided at the bottom of the lower tube, and the frame further includes: a second cover connected to a branch of the rear swingarm, and including a second connecting portion, wherein the second cover and the corresponding branch of the rear swingarm are used to arrange a cable connected to the vehicle lock, and the second connecting portion is adapted to fix a brake cable extending from the second cable hole.

[0015] In some embodiments, the lower pipe is a hollow straight pipe.

[0016] In some embodiments, a reinforcing section is provided at the connection between the head tube and the lower tube.

[0017] In some embodiments, the head tube, seat tube, downtube, rear swingarm, rear chainstay, and reinforcement are integrally formed by die casting.

[0018] In a second aspect of this disclosure, a bicycle is provided. The bicycle includes the frame of the first aspect of this disclosure.

[0019] In embodiments of this disclosure, the frame includes a head tube, seat tube, down tube, rear swingarm, chainstays, and a reinforcement. The head tube is used to mount the handlebars. The seat tube is used to mount at least the saddle. The down tube is disposed between the head tube and the seat tube and connects to the bottom of the seat tube and the head tube. The rear swingarm includes a first end and a second end disposed opposite to each other. The first end is connected to the bottom of the seat tube. The second end extends in a direction away from the down tube. The chainstays are connected to the second end of the seat tube and the rear swingarm and form an angle with the rear swingarm. The reinforcement is connected to the seat tube and the down tube to increase the bending stiffness of the frame. An area for the user to grip is defined between the reinforcement, the down tube, and the seat tube. With this arrangement, the reinforcement not only functions as a handle for easy carrying and moving of the bicycle, but also enhances the bending performance at the connection between the down tube and the seat tube, significantly improving the overall load capacity and durability of the frame.

[0020] It should be understood that the content described in this section is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0021] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0022] Figure 1 A schematic diagram of a vehicle frame according to an embodiment of the present disclosure is shown;

[0023] Figure 2 A perspective view of a vehicle frame according to an embodiment of the present disclosure is shown, wherein a first threading hole is shown;

[0024] Figure 3 A perspective view of a vehicle frame according to an embodiment of the present disclosure is shown, in which a receiving cavity is shown;

[0025] Figure 4 A perspective view of a vehicle frame according to an embodiment of the present disclosure is shown, wherein a first cover and a second cover are shown; and

[0026] Figure 5 A perspective view of a vehicle frame according to an embodiment of the present disclosure is shown, in which a first cavity and a second cavity are shown.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10. Head tube; 11. First wire hole; 12. Shelter; 13. Basket connector;

[0029] 20. Seat tube; 21. First lumen; 22. Second lumen; 23. Receiving cavity;

[0030] 30. Bottom tube; 31. Reinforcing section; 32. Second wire hole;

[0031] 40. Rear horizontal crossbar;

[0032] 50. Rear underrunner; 51. Mounting plate; 52. Second support unit;

[0033] 60. Reinforcing components;

[0034] 70. Central shaft tube; 71. First connecting part;

[0035] 81. First cover; 811. First support; 82. Second cover; 821. Second connecting part. Detailed Implementation

[0036] Preferred embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0037] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects.

[0038] As mentioned above, in the bicycle manufacturing process, most bicycles are made by welding segmented tubing together to form the frame. This manufacturing process places high demands on the technical skills of the operators, the equipment used, and the quality of the materials, making it difficult to effectively control the yield rate of finished products. In addition, frames produced using other processes also have problems with the strength and durability of the joints, making them prone to fatigue fracture, which affects the safety and service life of the entire vehicle.

[0039] This disclosure provides an embodiment of a bicycle frame and a bicycle. The frame includes a head tube, seat tube, down tube, rear swingarm, chainstays, and a reinforcing member. The head tube is used to mount the handlebars. The seat tube is used to mount at least the saddle. The down tube is disposed between the head tube and the seat tube and connects to the bottom of the seat tube and the head tube. The rear swingarm includes a first end and a second end disposed opposite each other. The first end is connected to the bottom of the seat tube. The second end extends in a direction away from the down tube. The chainstays are connected to the second end of the seat tube and the rear swingarm, and form an angle with the rear swingarm. The reinforcing member is connected to the seat tube and the down tube to increase the bending stiffness of the frame. An area for the user to grip is defined between the reinforcing member, the down tube, and the seat tube. With this arrangement, the reinforcing member not only functions as a handle for easy carrying and moving of the bicycle, but also enhances the bending performance at the connection between the down tube and the seat tube, significantly improving the overall load-bearing capacity and durability of the frame. The following will describe... Figures 1 to 5 The principles of this disclosure will be described in detail below.

[0040] like Figure 1 As shown, the frame can be used in two-wheeled vehicles such as bicycles, electric bikes, and mopeds. The frame includes a head tube 10, seat tube 20, down tube 30, rear swingarm 40, chainstays 50, and a reinforcing member 60. The head tube 10 is located at the front of the frame and is used to mount the front fork and handlebars. During vehicle operation, the head tube 10 can withstand the impact force from the front wheel.

[0041] like Figure 1 As shown, the seat post 20 can be used to mount the bicycle seat, and it can also be used to run cables and other components. The seat post 20 can be used with the bicycle seat, and the height of the seat can be adjusted by the user to meet the needs of users of different heights.

[0042] like Figure 1 As shown, one end of the downtube 30 is connected to the headtube 10, and the other end is connected to the bottom of the seat tube 20. In this way, the downtube 30 connects the front wheel support structure and the rear wheel support structure of the frame, and is the main load-bearing component of the frame. In some embodiments, the downtube 30 may have an approximately elliptical or rectangular cross-section. Here, the vertical cross-sectional dimension of the downtube 30 is larger than the horizontal cross-sectional dimension, thereby increasing the load-bearing capacity of the downtube 30.

[0043] like Figure 1 and Figure 2 As shown, the rear swingarm 40 includes a first end and a second end disposed opposite to each other. The first end of the rear swingarm 40 is connected to the bottom of the seat tube 20. The second end of the rear swingarm 40 extends away from the downtube 30. The second end of the rear swingarm 40 may include two branches, the ends of which are connected to the axle of the rear wheel.

[0044] like Figure 1 and Figure 2As shown, the chainstay 50 is connected to the second end of the seat tube 20 and the rear swingarm 40. The chainstay 50 and the rear swingarm 40 form a certain angle, which can form a triangular stability structure, thereby dispersing the impact force from the rear wheel.

[0045] like Figure 1 and Figure 2 As shown, the reinforcing member 60 is connected to the seat tube 20 and the down tube 30. An area for the user to grip is defined between the reinforcing member 60, the down tube 30, and the seat tube 20. In this way, the reinforcing member 60 not only functions as a handle for easy carrying and moving of the bicycle, but also enhances the bending resistance at the connection between the down tube 30 and the seat tube 20, significantly improving the overall load-bearing capacity and durability of the frame. Furthermore, the placement and size of the reinforcing member 60 differ from the crossbeams of traditional frames, allowing the user's legs to easily pass over it, thereby improving riding convenience and safety.

[0046] In some embodiments, the cross-sectional shape of the reinforcing member 60 may be approximately elliptical or rectangular. Here, the cross-sectional dimension of the reinforcing member 60 in the vertical direction is smaller than that in the horizontal direction, thereby improving the lateral bending resistance of the reinforcing member 6.

[0047] In some embodiments, major components such as the head tube 10, seat tube 20, down tube 30, rear swingarm 40, chainstay 50, and reinforcement 60 are integrally formed using a die-casting process. This ensures seamless connections between all components, avoids stress concentration at weld points, and makes the entire frame more robust and durable.

[0048] In some embodiments, welding technology can also be used to assemble the frame. In this process, each individual component, such as the head tube 10, seat tube 20, down tube 30, rear swingarm 40, rear chainstay 50, and reinforcement 60, is fabricated separately, and then they are joined and welded together using appropriate welding methods.

[0049] It should be understood that in other embodiments, the head tube 10, seat tube 20, down tube 30, rear swingarm 40, rear chainstay 50, and reinforcement 60 can be combined in any feasible manner, and this disclosure is not intended to limit this.

[0050] In some embodiments, as Figure 2As shown, a first cable hole 11 is provided on the side of the head tube 10 away from the down tube 30. The first cable hole 11 communicates with the interior of the head tube 10, and the interior of the head tube 10 communicates with the interior of the down tube 30. Cables for electronic components in the basket or on the handlebars (such as brake sensors, gearshift control cables, electric power assist system wires, etc.) can be inserted through the first cable hole 11 and then routed along the interior of the head tube 10 and down tube 30, eventually connecting to other electronic components at the seat post 20 or the rear swingarm 40. In this way, not only can the overall appearance of the bicycle be made cleaner and more aesthetically pleasing, but damage or wear that may occur when cables are exposed can also be avoided.

[0051] For example, during daily riding, exposed cables are easily scratched by branches, stones, or other external objects, or squeezed by other vehicles when parked, causing cables to break or insulation to be damaged, thus affecting the normal operation of electronic devices. By hiding the cables inside the frame, the lifespan and reliability of the bicycle can be significantly improved, while reducing maintenance costs.

[0052] In some embodiments, as Figure 2 As shown, the frame also includes a shield 12. The shield 12 is disposed around at least a portion of the edge of the first cable hole 11, for example, around the top and left and right sides of the first cable hole 11. The shield 12 is connected to the head tube 10 and can prevent liquids (such as rainwater, mud, etc.) from entering the head tube 10 through the first cable hole 11. In this way, the cables and bearings inside the head tube 10 can be protected from moisture intrusion, thereby avoiding the risk of short circuits or corrosion.

[0053] In some embodiments, the shield 12 and the head tube 10 are integrally formed by die casting. This arrangement provides a seamless connection between the shield 12 and the head tube 10, improving the frame's sealing and waterproofing performance.

[0054] In some embodiments, as Figure 1 and Figure 2 As shown, the frame also includes a basket connector 13. The basket connector 13 is located on the side of the head tube 10 away from the down tube 30 and is connected to the head tube 10. The basket connector 13 can secure the basket, providing the user with additional storage space. In some embodiments, the basket connector 13 may have multiple screw holes, thereby securing the basket to the basket connector 13 with threaded parts (such as screws).

[0055] In some embodiments, as Figure 1 and Figure 2As shown, when the basket connector 13 intersects with the first cable hole 11, in order not to affect the cable arrangement, a groove, through hole, or other structure can be provided on the basket connector 13 to avoid the first cable hole 11. In this way, the cable can pass smoothly through the first cable hole 11, and the installation of the basket can avoid squeezing or damaging the cable.

[0056] In some embodiments, as Figures 1 to 3 As shown, the frame also includes a bottom bracket tube 70. The bottom bracket tube 70 is located at the bottom of the seat post 20 and is connected to the seat post 20. The bottom bracket tube 70 can be used to mount pedal components, which may include components such as cranks, chainrings, and bearings. In this way, the bottom bracket tube 70 can provide a stable mounting base for the pedal components and can effectively transmit power.

[0057] In some embodiments, as Figure 3 As shown, a receiving cavity 23 for cabling is provided at the connection between the lower tube 30 and the seat tube 20. The receiving cavity 23 communicates with the interior of the lower tube 30 and the interior of the seat tube 20. A cable connection structure can be arranged inside the receiving cavity 23, so that cables extending from the head tube 10 and the lower tube 30 can be connected to cables in the rear fork 40 or the seat tube 20 at the receiving cavity 23. In this way, wear and damage to the cables caused by the external environment can be avoided.

[0058] In some embodiments, cables of different parts can be connected together using dedicated connectors (such as waterproof connectors or quick connectors) to ensure the stability of the electrical connection and waterproof performance. Here, the connector is arranged within the receiving cavity 23 for enhanced security.

[0059] In some embodiments, as Figure 3 and Figure 4 As shown, a first connecting part 71 is provided on the outer side of the bottom bracket tube 70 of the frame. The first connecting part 71 can be connected to the first cover 81. The first cover 81 is located between the two branches of the rear swingarm 40. By fixing the first connecting part 71, the first cover 81 can cover and protect the cables in the receiving cavity 23.

[0060] In some embodiments, as Figure 5 As shown, the seatpost 20 employs a dual-cavity structure, including a first cavity 21 and a second cavity 22. The first cavity 21 is used to mount the saddle, ensuring riding comfort and stability. The second cavity 22 is located behind the first cavity 21, closer to the chainstay 50, and can be used to house cables electrically connected to the control components. In this way, the dual-cavity structure not only makes full use of the internal space of the seatpost 20 but also improves cable protection, preventing exposed cables from being worn or damaged.

[0061] In some embodiments, as Figure 5 As shown, the frame also includes a mounting plate 51. The mounting plate 51 is positioned between the two branches of the rear chainstay 50 and connected to the rear chainstay 50. The mounting plate 51 can be used to mount control components, such as positioning units, circuit boards, battery management units, or other electronic devices. By mounting the control components on the mounting plate 51, interference from other structures with the control component signals, such as navigation positioning signals or Bluetooth signals, can be avoided, thereby improving the bicycle's performance.

[0062] In some embodiments, the cross-sectional shape of the two branches of the rear lower fork 50 may be, for example, a U-shaped structure, thereby improving the structural performance of the rear lower fork 50.

[0063] In some embodiments, as Figure 4 As shown, a first support portion 811 is provided on the first cover 81, and a second support portion 52 is provided on the mounting plate 51. These two supports are used to fix the mudguard. The first cover 81 is located between the two branches of the rear swingarm 40, and the mounting plate 51 is located between the two branches of the rear chainstay 50 and connected to the rear chainstay 50. In this way, the mudguard can be fixed in two different positions on the frame, which can ensure the stability and reliability of the mudguard during riding, thereby preventing it from loosening or falling off on bumpy roads.

[0064] In some embodiments, as Figure 4 As shown, the second support portion 52 includes a limiting groove. This limiting groove is located on the side of the mounting plate 51 facing the seat tube 20. A lifting lug can be provided on the outer side of the mudguard, and the lifting lug can be inserted into the limiting groove on the mounting plate 51. After the lifting lug is inserted, it can be connected to the mounting plate 51 by threaded parts (such as screws or bolts), thereby fixing the mudguard. In addition, the limiting groove can limit the swaying of the lifting lug, thereby enhancing the stability of the mudguard.

[0065] In some embodiments, as Figure 4 As shown, the bottom of the downtube 30 is provided with a second cable pass-through hole 32, which is used to lead out the brake cable arranged inside the downtube 30. The frame also includes a second cover 82. The second cover 82 is connected to one branch of the rear swingarm 40. The cross-sectional shape of the branch of the rear swingarm 40 can be, for example, an L-shaped structure, and the cross-sectional shape of the second cover 82 can also be, for example, an L-shaped structure. When the second cover 82 is connected to one branch of the rear swingarm 40, a closed area is formed between the two, in which a cable connected to the lock can be arranged, thereby ensuring that the cable is protected and avoiding wear or damage caused by the external environment.

[0066] In some embodiments, as Figure 4As shown, the second cover 82 is also provided with a second connecting portion 821. The second connecting portion 821 can fix the brake cable extending from the second cable hole 32. The second connecting portion 821 may include, for example, a special slot or clamp, which can fix the brake cable and prevent it from loosening or shifting during riding.

[0067] In some embodiments, as Figures 1 to 5 As shown, the downtube 30 is a hollow straight tube. Hollow straight tubes not only facilitate manufacturing and processing but also reduce the overall weight of the frame. The interior of the hollow straight tube is a cavity, which can be used to arrange cables, providing them with ample protection within the frame and preventing wear or damage from the external environment. Furthermore, when the hollow straight tube connects to the seatpost 20, the load is concentrated at the joint. A reinforcing member 60 is provided between the downtube 30 and the seatpost 20. The reinforcing member 60 increases the bending stiffness of the joint, preventing fatigue cracks or other damage due to long-term use. In this way, the overall frame structure is more robust and durable, ensuring riding safety and comfort while also extending the frame's lifespan.

[0068] In some embodiments, as Figure 4 and Figure 5 As shown, a reinforcing part 31 is provided at the connection between the head tube 10 and the down tube 30. The reinforcing part 31 can distribute the stress generated during riding and prevent fatigue cracks or other damage from long-term use at the connection. It should be understood that the shape and size of the reinforcing part 31 need to be adapted to the structure of the head tube 10 and the down tube 30, taking into account both aesthetics and durability.

[0069] In some embodiments, the overall frame structure is integrally formed by die casting, including multiple components such as a shield 12, a basket connector 13, a mounting plate 51, a bottom bracket tube 70, a head tube 10, a seat tube 20, a downtube 30, a rear swingarm 40, a rear chainstay 50, and a reinforcing member 60. In this way, all components can be seamlessly connected to form a highly integrated and robust structure.

[0070] In a second aspect of this disclosure, a bicycle is provided. The bicycle includes the frame of the first aspect of this disclosure. In this bicycle, the frame includes a head tube 10, a seat tube 20, a down tube 30, a rear swingarm 40, a chainstay 50, and a reinforcing member 60. The head tube 10 is used to mount the handlebars. The seat tube 20 is used to mount at least the saddle. The down tube 30 is disposed between the head tube 10 and the seat tube 20 and is connected to the bottom of the seat tube 20 and the head tube 10. The rear swingarm 40 includes a first end and a second end disposed opposite to each other. The first end is connected to the bottom of the seat tube 20. The second end extends in a direction away from the down tube 30. The chainstay 50 is connected to the second end of the seat tube 20 and the rear swingarm 40 and forms an angle with the rear swingarm 40. The reinforcing member 60 is connected to the seat tube 20 and the down tube 30 to increase the bending stiffness of the frame. An area for a user to grip is defined between the reinforcing member 60, the down tube 30, and the seat tube 20. With this arrangement, the reinforcement 60 not only functions as a handle, making it convenient for users to carry and move the bicycle, but also enhances the bending resistance at the connection between the downtube 30 and the seat tube 20, significantly improving the overall load-bearing capacity and durability of the frame.

[0071] In some embodiments, the bicycle also includes a basket. The basket is connected to the frame via a basket connector 13 on the head tube 10. Furthermore, a solar panel can be installed inside the basket to provide power to the bicycle's electronic equipment. The solar panel's cable passes through a first wiring hole 11 on the head tube 10, then extends along the interior of the head tube 10 and the down tube 30 to the bottom of the seat tube 20, where it connects to cables for other electronic components.

[0072] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A vehicle frame, characterized in that, include: Head tube (10), used to mount handlebars; Seat post (20), used at least for mounting the vehicle seat; The lower tube (30) is disposed between the head tube (10) and the seat tube (20), and is connected to the bottom of the seat tube (20) and the head tube (10); The rear swingarm (40) includes a first end and a second end disposed opposite to each other, the first end being connected to the bottom of the seat tube (20), and the second end extending in a direction away from the downtube (30); The rear lower fork (50) is connected to the second end of the seat tube (20) and the rear horizontal fork (40), and has an angle with the rear horizontal fork (40); as well as A reinforcement (60) is connected to the seat tube (20) and the downtube (30) to increase the bending stiffness of the frame and to define an area for the user to hold between the reinforcement (60), the downtube (30) and the seat tube (20).

2. The frame according to claim 1, characterized in that, A first threading hole (11) is provided on the side of the head tube (10) away from the lower tube (30). The first threading hole (11) communicates with the interior of the head tube (10), and the interior of the head tube (10) communicates with the interior of the lower tube (30).

3. The frame according to claim 2, characterized in that, Also includes: A shield (12) is disposed around at least a portion of the edge of the first thread hole (11) and connected to the head tube (10) to prevent liquid from entering the interior of the head tube (10) through the first thread hole (11).

4. The frame according to claim 1, characterized in that, Also includes: The basket connector (13) is disposed on the side of the head tube (10) away from the lower tube (30) and is connected to the head tube (10).

5. The frame according to claim 1, characterized in that, Also includes: A central tube (70) is disposed at the bottom of the seat tube (20) and connected to the seat tube (20). The central tube (70) is used to install the pedal assembly.

6. The frame according to claim 5, characterized in that, A receiving cavity (23) for wiring is provided at the connection between the lower tube (30) and the seat tube (20), and the receiving cavity (23) communicates with the interior of the lower tube (30) and the interior of the seat tube (20).

7. The frame according to claim 6, characterized in that, The outer side of the central tube (70) is provided with a first connecting part (71), and the frame also includes: A first cover (81) is disposed between the two branches of the rear flat fork (40) and connected to the first connecting part (71) to cover the cable in the receiving cavity (23).

8. The frame according to claim 7, characterized in that, The seatpost (20) includes a first cavity (21) and a second cavity (22), wherein the second cavity (22) is closer to the chainstay (50) than the first cavity (21), the first cavity (21) is used to mount the saddle, and the second cavity (22) is used to carry cables electrically connected to the control components, and the frame also includes: A mounting plate (51) is disposed between the two branches of the rear lower fork (50) and connected to the rear lower fork (50), the mounting plate (51) being used to mount the control component.

9. The frame according to claim 8, characterized in that, The first cover (81) includes a first support portion (811), the mounting plate (51) includes a second support portion (52), and the first support portion (811) and the second support portion (52) are used to fix the mudguard.

10. The frame according to claim 9, characterized in that, The second support (52) includes a limiting groove, which is disposed on the side of the mounting plate (51) facing the seat tube (20).

11. The frame according to any one of claims 1 to 10, characterized in that, The bottom of the lower tube (30) is provided with a second wire hole (32), and the frame also includes: The second cover (82) is connected to one branch of the rear swingarm (40) and includes a second connecting portion (821) between the second cover (82) and the corresponding branch of the rear swingarm (40) for arranging a cable connected to the vehicle lock, the second connecting portion (821) being adapted to secure a brake cable extending from the second cable hole (32).

12. The frame according to any one of claims 1 to 10, characterized in that, The lower pipe (30) is a hollow straight pipe.

13. The frame according to any one of claims 1 to 10, characterized in that, A reinforcing part (31) is provided at the connection between the head tube (10) and the lower tube (30).

14. The frame according to any one of claims 1 to 10, characterized in that, The head tube (10), the seat tube (20), the lower tube (30), the rear horizontal fork (40), the rear lower fork (50), and the reinforcing member (60) are integrally formed by die casting.

15. A bicycle, characterized in that, include: The frame according to any one of claims 1 to 14.

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