Simple frame for electric motorcycle

Abstract

The utility model discloses a simple frame for an electric motorcycle, which comprises a main beam frame, a motorcycle head vertical pipe is mounted at the front end of the main beam frame, a first bottom fork and a second bottom fork are connected to the rear end of the main beam frame, an assembly seat for mounting a rear wheel is arranged at the rear end of the first bottom fork, and the rear end of the second bottom fork is connected to the assembly seat. An included angle is formed between the extension direction of the first bottom fork and the extension direction of the second bottom fork, so that any three points, connected pairwise, of the first bottom fork, the second bottom fork and the main beam frame form a triangular arrangement relationship; the main beam frame comprises a first main beam and a second main beam located below the first main beam, each of the first main beam and the second main beam comprises two edge beam rods distributed left and right, and a hollow structure is defined by the interiors of the four edge beam rods. The frame structure has the advantages that the frame structure is defined by the four side beam rods, so that the whole frame structure is very simple and light, and the frame structure is very stable due to the triangular structure between the bottom fork and the main beam frame.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycles, in particular to a simple frame for an electric motorcycle. Background Art

[0002] Electric motorcycles are very popular among contemporary young people because they can provide higher speeds through electrical drive alone.

[0003] The motorcycle frame is the most important supporting component of the electric motorcycle, which has the functions of bearing weight, preventing collision and fixing other parts of the electric motorcycle. In order to ensure the safety of the motorcycle, the motorcycle frame is mostly increased in the production process by increasing the frame's own weight or increasing its overall structure to ensure its own strength.

[0004] However, in the field of off-road motorcycles, in order to ensure good off-road performance, motorcycle frames are developed in the direction of lightweight and simplification. However, this greatly reduces the structural stability and anti-collision ability of the motorcycle frame, posing a huge safety hazard in use. Utility Model Content

[0005] In view of this, the utility model provides a simple frame for an electric motorcycle, aiming to satisfy the requirements of simplification of the frame while ensuring the stability of the frame.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A simple frame for an electric motorcycle, characterized in that it includes a main beam frame arranged obliquely, the main beam frame is constructed into a frame structure, a front standpipe is installed at its front end, a first flat fork and a second flat fork are connected to the rear end of the main beam frame, both extending backward, wherein the rear end of the first flat fork is provided with an assembly seat for mounting a rear wheel, the rear end of the second flat fork is connected to the assembly seat, an extension direction of the first flat fork and an extension direction of the second flat fork form an angle, so that any three points connected between the first flat fork, the second flat fork and the main beam frame form a triangular arrangement relationship; a load-bearing rod extending backward is connected to the middle of the main beam frame, and the load-bearing rod is used to mount a seat cushion.

[0008] With the above structure, the main beam adopts a frame structure, which makes the overall structure of the motorcycle frame very simple and light. Combined with the triangular structural arrangement between the first flat fork, the second flat fork and the main beam, the overall structure of the frame is more stable.

[0009] As a preferred embodiment, the main beam frame includes a first main beam and a second main beam located below the first main beam, the first main beam and the second main beam are both arranged obliquely, the front ends of both are fixedly connected to the front standpipe, and the rear ends of both are fixedly connected together, the first main beam and the second main beam each include two side beams distributed on the left and right, and the four side beams form a hollow structure inside. With the above structure, the main beam frame is very simple and light, and the hollow structure can be used to assemble other parts of the motorcycle, thereby making the overall structure very light.

[0010] As a preferred embodiment, the first main beam and the second main beam are fixedly connected at the rear ends by a first extension rod. With the above structure, the main beam frame forms a closed-loop frame structure, which can ensure the stability of the overall structure of the main beam frame.

[0011] Preferably, a first support rod is provided between the end of the load-bearing rod and the first main beam, and the first main beam, the load-bearing rod and the first support rod form a triangular hollow structure. With the above structure, the triangular structure makes the load-bearing rod more stable, and the internal hollow structure can be used to install other parts of the motorcycle, thereby making the overall assembly structure more compact.

[0012] As a preference: a support block is provided at the front end of the second flat fork, and the support block is connected to the first main beam and the second main beam respectively. With the above structure, the connection between the flat fork mechanism and the main beam frame is more firmly secured.

[0013] Preferably, the support block has a first adapter, a second adapter and a third adapter, the first adapter is hinged to the second flat fork, the second adapter is hinged to the second main beam, a shock absorber is installed between the support block and the first main beam, the front end of the shock absorber is hinged to the first main beam, the rear end is hinged to the third adapter, the front end of the first flat fork is hinged to the second main beam, the rear end is hinged to the second flat fork, so that a four-bar linkage is formed between the first flat fork, the second flat fork, the support block and the second main beam. With the above structure, through the combination of the four-bar linkage and the shock absorber, the stability of the frame mechanism is ensured, and the pressure transmission path when the motorcycle is subjected to pressure can be increased, thereby increasing the compression stroke between the rear wheel of the motorcycle and the seat cushion, thereby increasing the shock absorption effect of the motorcycle.

[0014] Preferably, the middle portion of the first main beam is fixedly connected to the second main beam through a second support rod, so that the first main beam, the second support rod, the second main beam and the first extension rod form a trapezoidal structure. With the above structure, the overall structure of the main beam frame is more solid through the trapezoidal structure.

[0015] As a preference: a mounting seat is preset at the lower side of the second main beam, and the mounting seat is used to fix and install the battery box. The above structure makes the assembly space of the battery box larger, and the size of the battery can be changed arbitrarily.

[0016] Preferably, a second extension rod extends downward from the end of the second main beam, and the second extension rod is used for mounting a motorcycle pedal.

[0017] As a preferred embodiment, a protrusion extending forward is provided on the upper part of the assembly seat, and the rear end of the second flat fork is hinged on the protrusion. The above structure makes the structure more compact.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The simplified frame for an electric motorcycle provided by the utility model has a frame-type structural layout for the main beam frame, so that the structure of the motorcycle frame is very simple; the space formed by the frame-type structure can be used to assemble other parts of the motorcycle, so that the overall structure of the motorcycle is very compact; the two rear forks form a triangular supporting relationship with the main beam frame, which ensures that after the motorcycle is assembled with the front and rear wheels, the entire motorcycle frame has very excellent stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a simple frame;

[0021] Figure 2 This is a schematic diagram of the structure of a simple frame (from the main perspective);

[0022] Figure 3 This is a reference diagram of the use status of a simple frame applied to an electric motorcycle;

[0023] Figure 4 It is a structural schematic diagram of the assembly seat 4a;

[0024] Figure 5 It is a schematic structural diagram of the support block 8. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with embodiments and drawings.

[0026] like Figures 1 to 3As shown, a simple frame for an electric motorcycle comprises a main beam frame A arranged obliquely, a front riser 1 is installed at the front end of the main beam frame A, the front riser 1 is used for rotatably installing the front wheel fork and the handlebar of the motorcycle, and the rear end of the main beam frame A is connected to a first fork 4 and a second fork 5 both extending backward, wherein a mounting seat 4a for mounting the rear wheel is provided at the rear end of the first fork 4, and the rear end of the second fork 5 is connected to the mounting seat 4a, and an angle r is formed between the extension direction of the first fork 4 and the extension direction of the second fork 5, and the angle r makes the connection points between the main beam frame A and the first fork 4, the connection points between the main beam frame A and the second fork 5, and the connection points between the first fork 4 and the second fork 5 form a triangular structure, and the triangular structure makes the structure of the entire motorcycle frame more solid.

[0027] In this embodiment, the main beam frame A includes a first main beam 2 and a second main beam 3 located below the first main beam 2. The first main beam 2 and the second main beam 3 each include two side beams a distributed on the left and right. The four side beams a make the main beam frame A form a hollow frame structure, which makes the entire motorcycle frame structure very simple and light.

[0028] A load-bearing rod 6 extending rearward is also connected to the middle of the main beam frame A. The load-bearing rod 6 is mainly used for installing a seat cushion of a motorcycle.

[0029] Based on the above structure, through the frame-type main beam design and the overall triangular structure design, the frame structure is simple and light while ensuring the stability of the overall structure.

[0030] Furthermore, the first main beam 2 and the second main beam 3 are arranged obliquely, and the front ends of the two are fixed to the same side of the vehicle body vertical tube 1, and the ends of the two are fixed together through the first extension rod 2a, so that the four side beams a can form a closed-loop frame structure to ensure the stability of the main beam frame A. Among them, the first extension rod 2a is integrally formed at the end of the first main beam 2, and extends obliquely downward to be fixed to the end of the second main beam 3.

[0031] like Figure 1 and Figure 2 As shown, a first support rod 7 is fixedly arranged between the end of the load-bearing rod 6 and the first main beam 2, so that the first main beam 2, the load-bearing rod 6 and the first support rod 7 form a triangular hollow structure. The triangular structure makes the load-bearing rod 6 have a stronger load-bearing capacity. At the same time, the internal hollow structure also forms an assembly space, which can be used to install some other parts of the electric motorcycle, making the overall assembly structure of the motorcycle very compact. In addition, the fixing position of the first support rod 7 is located at the intersection between the first main beam 2 and the first extension rod 2a, so that when the load-bearing rod 6 is subjected to force, it can be avoided that the force is concentrated on the first main beam 2, so that the first main beam 2 is deformed.

[0032] like Figure 1 , Figure 2 and Figure 4 As shown, a support block 8 is installed at the front end of the second flat fork 5, and the support block 8 is also distributed and connected to the first main beam 2 and the second main beam 3, so that the structure between the first flat fork 4, the second flat fork 5 and the main beam frame A can be further ensured to be more solid. In this embodiment, a first adapter 8a, a second adapter 8b and a third adapter 8c are formed on the support block 8. The first adapter 8a is hinged to the second flat fork 5, and the second adapter 8b is hinged to the second main beam 3. A shock absorber 9 is installed between the support block 8 and the first main beam 2. The front end of the shock absorber 9 is hinged to the first main beam 2, and the rear end is hinged to the third adapter 8c. In addition, as Figure 1 and Figure 3 As shown, the front end of the first flat fork 4 is hinged to the rear end of the second main beam 3, and the upper part of the assembly seat 4a is provided with a protrusion 4a1 extending forward, and the rear end of the second flat fork 5 is hinged to the protrusion 4a1, which makes a four-bar linkage mechanism formed between the first flat fork 4, the second flat fork 5, the support block 8 and the second main beam 3. Although the single four-bar linkage is not structurally stable, it is restricted by the shock absorber 9, which not only makes the overall structure of the frame more stable, but also makes the pressure conduction path of the motorcycle longer when the motorcycle is bumpy during driving, so that the compression stroke between the rear wheel of the motorcycle and the seat cushion is larger, thereby making the overall shock absorption effect of the motorcycle better.

[0033] In addition, a second support rod 10 is connected between the middle of the first main beam 2 and the second main beam 3, so that a trapezoidal structure is formed between the first main beam 2, the second support rod 10, the second main beam 3 and the first extension rod 2a, further making the structure of the main beam frame A more stable. The second support rod 10 divides the original hollow structure of the main beam frame A into a trapezoidal structure and a quadrilateral structure, and the inside of the trapezoidal structure and the quadrilateral structure can be used to install other parts of the motorcycle, so as to make the entire motorcycle structure more compact. In this embodiment, the installation position of the second support rod 10 is located at the intersection between the load-bearing rod 6 and the first main beam 2, which also allows the force of the load-bearing rod 6 to be directly transmitted to the second main beam 3, avoiding the first main beam 2 from being deformed due to concentrated force.

[0034] like Figures 1 to 3 As shown, a mounting seat 3a is preset on the lower side of the second main beam 3, and the mounting seat 3a can be used to fix the battery box. In this embodiment, no other limiting structure is additionally installed on the lower side of the second main beam 3, which makes the frame of this embodiment applicable to a variety of battery models, making the frame more selective in battery matching.

[0035] Furthermore, a second extension rod 3b is further extended downwardly at the end of the second main beam 3. In this embodiment, the second extension rod 3b is formed at the end of the first extension rod 2a and is in the same extension direction as the first extension rod 2a. Both sides of the second extension rod 3b can be used to install motorcycle pedals. In addition, in this embodiment, the second extension rod 3b is also fixedly installed with a mounting plate, and the support plate can be used to support the motorcycle motor between the mounting plate and the second main beam 3.

[0036] In this embodiment, since the first main beam 2 and the second main beam 3 each include two side beam rods a distributed on the left and right, the corresponding load-bearing rod 6, the first support rod 7, the first extension rod 2a and the second support rod 10 also include two side beam rods a distributed on the left and right.

[0037] In this embodiment, except for those explicitly described as hinged installation, other rods are connected by welding or integral molding to ensure the structural strength of the entire frame.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make a variety of similar expressions without violating the purpose and claims of the present invention, and such changes fall within the scope of protection of the present invention.

Claims

1. A simple frame for an electric motorcycle, characterized in that: The invention comprises an inclined main beam frame (A), the main beam frame (A) being constructed into a frame structure, a front end of which is mounted with a front standpipe (1), a rear end of which is connected with a first flat fork (4) and a second flat fork (5) both extending backwards, wherein a mounting seat (4a) for mounting a rear wheel is provided at the rear end of the first flat fork (4), and the rear end of the second flat fork (5) is connected to the mounting seat (4a), and an extending direction of the first flat fork (4) and an extending direction of the second flat fork (5) form an angle (r), so that any three points connected in pairs between the first flat fork (4), the second flat fork (5) and the main beam frame (A) form a triangular arrangement relationship; A load-bearing rod (6) extending backward is connected to the middle of the main beam frame (A), and the load-bearing rod (6) is used to install a seat cushion.

2. The simplified frame for an electric motorcycle according to claim 1, characterized in that: The main beam frame (A) comprises a first main beam (2) and a second main beam (3) located below the first main beam (2); the first main beam (2) and the second main beam (3) are both arranged obliquely, the front ends of both are fixedly connected to the front standpipe (1), and the rear ends of both are fixedly connected together; the first main beam (2) and the second main beam (3) each comprise two side beam rods (a) distributed on the left and right, and the four side beam rods (a) form a hollow structure inside.

3. The simplified frame for an electric motorcycle according to claim 2, characterized in that: The rear ends of the first main beam (2) and the second main beam (3) are fixedly connected together via a first extension rod (2a).

4. The simplified frame for an electric motorcycle according to claim 2, characterized in that: A first support rod (7) is provided between the end of the load-bearing rod (6) and the first main beam (2); the first main beam (2), the load-bearing rod (6) and the first support rod (7) form a triangular hollow structure.

5. The simplified frame for an electric motorcycle according to claim 2, characterized in that: A support block (8) is provided at the front end of the second flat fork (5), and the support block (8) is respectively connected to the first main beam (2) and the second main beam (3).

6. The simplified frame for an electric motorcycle according to claim 5, characterized in that: The support block (8) has a first transfer interface (8a), a second transfer interface (8b) and a third transfer interface (8c); the first transfer interface (8a) is hinged to the second flat fork (5); the second transfer interface (8b) is hinged to the second main beam (3); a shock absorber (9) is installed between the support block (8) and the first main beam (2); the front end of the shock absorber (9) is hinged to the first main beam (2), and the rear end is hinged to the third transfer interface (8c); the front end of the first flat fork (4) is hinged to the second main beam (3), and the rear end is hinged to the second flat fork (5), so that a four-bar linkage is formed between the first flat fork (4), the second flat fork (5), the support block (8) and the second main beam (3).

7. The simplified frame for an electric motorcycle according to claim 2, characterized in that: The middle portion of the first main beam (2) and the second main beam (3) are fixedly connected together via a second support rod (10), and a trapezoidal structure is formed between the first main beam (2), the second support rod (10), the second main beam (3) and the first extension rod (2a).

8. The simplified frame for an electric motorcycle according to claim 2, characterized in that: A mounting seat (3a) is preset on the lower side of the second main beam (3), and the mounting seat (3a) is used for fixing and installing a battery box.

9. The simplified frame for an electric motorcycle according to claim 2, characterized in that: A second extension rod (3b) extends downward from the end of the second main beam (3), and the second extension rod (3b) is used for mounting a motorcycle pedal.

10. The simplified frame for an electric motorcycle according to claim 1, characterized in that: The upper part of the assembly seat (4a) is provided with a protruding portion (4a1) extending forward, and the rear end of the second flat fork (5) is hinged on the protruding portion (4a1).

Images