Motorcycle frame assembly and motorcycle

Abstract

This utility model provides a motorcycle frame assembly and a motorcycle. The motorcycle frame assembly includes a front frame assembly, which includes a head tube and a pair of connectors. A connecting rod is provided between the connectors. A front frame support tube and a front frame reinforcing tube are provided between the head tube and the connectors. A reinforcing rod assembly is provided between the front frame support tube and the front frame reinforcing tube. A rear frame assembly is also provided. The front frame assembly further includes a connecting mechanism, and the rear frame assembly is detachably connected to the front frame assembly via the connecting mechanism. This utility model, through the detachable connection design of the front and rear frame assemblies and the optimized arrangement of the reinforcing rod assembly, effectively improves the overall strength of the frame while facilitating frame assembly and disassembly.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle technology, and in particular to a motorcycle frame assembly and a motorcycle. Background Technology

[0002] The motorcycle frame is a crucial component, closely related to the motorcycle's handling and riding comfort. The frame supports the engine, provides a fixed position for the steering mechanism and rear shock absorber, carries the rider, passenger, and their luggage, and also provides mounting locations for the fuel tank, battery, and other components.

[0003] In the existing technology, the motorcycle frame is mainly made of multiple independent round or square tubes welded together. The vibration generated during the motorcycle's operation will be transmitted to various parts of the frame, which is especially noticeable in off-road motorcycles and racing motorcycles. If the motorcycle frame is not strong enough, it is easy to cause damage to the frame during long-term operation. Summary of the Invention

[0004] This utility model provides a motorcycle frame assembly and a motorcycle to solve the technical problem of insufficient strength of the motorcycle frame.

[0005] This utility model provides a motorcycle frame assembly and a motorcycle, the motorcycle frame assembly and the motorcycle comprising: A front frame assembly, the front frame assembly including a head tube and a pair of connectors, a connecting rod between the connectors, a front frame support tube and a front frame reinforcing tube between the head tube and the connectors, and a reinforcing rod assembly connecting the front frame support tube and the front frame reinforcing tube. The rear frame assembly, the front frame assembly further includes a connecting mechanism, the rear frame assembly being detachably connected to the front frame assembly via the connecting mechanism.

[0006] In one embodiment of the present invention, the front frame support tube has a first horizontal portion and a first bent connecting portion, the front frame reinforcing tube has a second horizontal portion and a second bent connecting portion, the ends of the first bent connecting portion and the second bent connecting portion are connected to the connector, the first bent connecting portion and the second bent connecting portion are welded together, and the reinforcing rod assembly is disposed between the first horizontal portion and the second horizontal portion.

[0007] In one embodiment of the present invention, the reinforcing rod assembly includes a first reinforcing rod, a second reinforcing rod, a third reinforcing rod, and a fourth reinforcing rod that are connected end to end along the extension direction of the front frame support tube and the front frame reinforcing tube.

[0008] In one embodiment of the present invention, the second reinforcing rod and the fourth reinforcing rod are arranged perpendicular to the front frame support tube and the front frame reinforcing tube, the first reinforcing rod is inclinedly arranged at one end of the front tube and the second reinforcing rod, and the third reinforcing rod is inclinedly arranged between the second reinforcing rod and the fourth reinforcing rod, and the first reinforcing rod and the third reinforcing rod are inclined in the same direction.

[0009] In one embodiment of this utility model, a reinforcing connecting tube is provided at the connection between the connecting rod and the front frame support tube.

[0010] In one embodiment of the present invention, the rear frame assembly includes a rear frame support tube and a handrail tube. One end of the rear frame support tube and the handrail tube are detachably connected to the front frame support tube through the connecting mechanism, and the other end of the rear frame support tube is fixedly connected to the handrail tube.

[0011] In one embodiment of the present invention, the connecting mechanism includes a fixing head and a connecting head. The fixing head and the connecting head are coaxially arranged, and the fixing head and the connecting head are detachably connected by fasteners. The connecting head is provided with a fixing part, and the fixing part is fixedly connected to the rear frame support tube or the handrail tube.

[0012] In one embodiment of the present invention, a fixing rod is provided between the front frame reinforcing tubes, and a fixing block for fixing the engine is provided on the fixing rod. A bracket for fixing the engine is detachably connected to the connector.

[0013] In one embodiment of the present invention, the front frame support tube is provided with a mounting rod, and the mounting rod is provided with a mounting block for fixing the shock absorber.

[0014] This utility model also provides a motorcycle, which includes the motorcycle frame assembly described above.

[0015] The beneficial effects of this utility model are as follows: The motorcycle frame assembly and motorcycle proposed in this utility model effectively improve the overall strength of the frame through the detachable connection design of the front frame assembly and the rear frame assembly, as well as the optimized arrangement of the reinforcing rod assembly. At the same time, the reasonable layout of multiple reinforcing rods disperses stress and enhances the durability of the frame. Furthermore, the detachable connection between the front frame assembly and the rear frame assembly realizes the split structure of the frame, which is convenient for replacement and maintenance. It also has the advantages of improving the frame strength, effectively dispersing stress, and enhancing durability. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0017] In the attached diagram: Figure 1 This is a schematic diagram of a vehicle frame structure provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the front structure of the vehicle frame during assembly according to one embodiment of the present invention; Figure 3 This is a schematic diagram of the rear structure of the vehicle frame during assembly according to one embodiment of the present utility model; Figure 4 This is a schematic diagram of the connection mechanism provided in one embodiment of the present invention; Figure 5 This is a cross-sectional view of the connecting mechanism provided in one embodiment of the present invention.

[0018] The attached figures are labeled as follows: 1. Head tube; 2. Connector; 3. Connecting rod; 4. Front frame support tube; 5. First horizontal section; 6. First bent connecting section; 7. Front frame reinforcing tube; 8. Second reinforcing rod; 9. Third reinforcing rod; 10. Fixing rod; 11. Fixing block; 12. Bracket; 13. Mounting rod; 14. Mounting block; 15. Connecting mechanism; 15. Fixing head; 1501. Connecting head; 1502. Fastener; 1503. Fixing part; 1504. Rear frame support tube; 16. Handrail tube; 17. Shock absorber; 18. Engine; 19. Detailed Implementation

[0019] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0020] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0021] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0022] Please see Figures 1-5 This utility model provides a motorcycle frame assembly in one embodiment.

[0023] In one exemplary embodiment, the motorcycle frame assembly includes: The front frame assembly includes a front tube 1 and a pair of connectors 2. A connecting rod 3 is provided between the connectors 2. A front frame support tube 4 and a front frame reinforcing tube 5 are provided between the front tube 1 and the connectors 2. A reinforcing rod assembly that connects the front frame support tube 4 and the front frame reinforcing tube 5 is provided between the front frame support tube 4 and the front frame reinforcing tube 5. The rear frame assembly and the front frame assembly also include a connecting mechanism 15, through which the rear frame assembly is detachably connected to the front frame assembly.

[0024] In this embodiment, the front frame assembly forms a basic frame consisting of the front tube 1, connectors 2, and connecting rods 3. The front frame support tube 4 and reinforcing tube form a double support structure, with the reinforcing rod assembly forming a mesh support between them, effectively improving torsional rigidity and bending strength. The connecting mechanism 15 adopts a detachable design, achieving modular assembly while ensuring the connection strength between the front and rear frame assemblies. Compared with existing welded frames, this solution has advantages such as good structural stability, uniform stress distribution, and ease of maintenance. By optimizing the support structure and connection method, both overall rigidity is improved, and the maintenance difficulties caused by the irreversible connection of traditional frames are solved.

[0025] For example, the reinforcing bars can be constructed from straight or bent tubes, and their connection methods include welding, riveting, or threaded connections. As a preferred embodiment, the reinforcing bars are made of hollow steel tubes to reduce weight, or composite material tubes to improve structural strength.

[0026] In an exemplary embodiment, the front frame support tube 4 has a first horizontal portion 401 and a first bent connection portion 402, and the front frame reinforcing tube 5 has a second horizontal portion 501 and a second bent connection portion 502. The ends of the first bent connection portion 402 and the second bent connection portion 502 are connected to the connector 2. The first bent connection portion 402 and the second bent connection portion 502 are welded together, and the reinforcing rod assembly is disposed between the first horizontal portion 401 and the second horizontal portion 501.

[0027] In this embodiment, the connection strength between the front frame support tube 4 and the front frame reinforcing tube 5 is effectively enhanced by welding the bent connection and setting the reinforcing rod assembly. The bent connection expands the welding contact area, making the stress distribution more uniform. The reinforcing rod assembly forms a support frame between the first horizontal part 401 and the second horizontal part 501, significantly improving the overall structural rigidity. This solves the problem of stress concentration at the connection between the support tube and the reinforcing tube in traditional frames, extending the service life of the frame and improving vehicle driving stability. Specifically, the welded bent connection can effectively transfer loads, while the reinforcing rod assembly suppresses frame deformation through multi-directional support.

[0028] For example, in this embodiment, the ends of the front frame support tube 4 and the front frame reinforcing tube 5 are both welded to the connector 2. During welding, the three are welded together, and the weld between the first bent connecting part 402 and the second bent connecting part 502 is lengthened, increasing the connection area between the two.

[0029] For example, the first horizontal portion 401 and the second horizontal portion 501 are the main body parts of the front frame support tube 4 and the front frame reinforcing tube 5, respectively, and are used to provide the main support force. The first bent connecting portion 402 and the second bent connecting portion 502 are formed by a bending process, and the bending angle can be adjusted according to actual needs, such as using a 90-degree bend or a 135-degree bend.

[0030] For example, the reinforcing bar assembly includes a first reinforcing bar 6, a second reinforcing bar 7, a third reinforcing bar 8, and a fourth reinforcing bar 9 connected end-to-end along the extension direction of the front frame support tube 4 and the front frame reinforcing tube 5. Two horizontal bends are also provided on the first horizontal portion 401 and the second horizontal portion 501. The second reinforcing bar 7 and the fourth reinforcing bar 9 are arranged perpendicular to the front frame support tube 4 and the front frame reinforcing tube 5 and are located near the horizontal bends to improve the structural strength at these locations. The first reinforcing bar 6 is inclined at one end of the front tube 1 and the second reinforcing bar 7, and the third reinforcing bar 8 is inclined between the second reinforcing bar 7 and the fourth reinforcing bar 9. The first reinforcing bar 6 and the third reinforcing bar 8 are inclined in the same direction.

[0031] It is worth noting that the vertically positioned reinforcing bars provide the main support force, while the inclined reinforcing bars form a continuous force transmission path, constructing a stable triangular support system within the frame structure. When the motorcycle is in motion, the vertical bars directly absorb longitudinal vibration loads, while the inclined bars distribute and transmit lateral vibration stress throughout the entire frame structure. Compared to the independently welded tubular frames in existing technologies, this arrangement results in a more uniform distribution of vibration stress, reduces local stress concentration in the frame by approximately 40%, and increases overall rigidity by more than 25%. Because the first and third reinforcing bars 8 are designed with the same inclination, the force transmission path is more continuous, avoiding the force flow interruption problem present in traditional cross-support structures, thereby significantly improving the fatigue life of the frame under continuous vibration conditions.

[0032] For example, the vertical arrangement of the second reinforcing rod 7 and the fourth reinforcing rod 9 can be achieved by welding or integral molding, forming a 90° angle with the horizontal front frame support tube 4 and the front frame reinforcing tube 5, with a tolerance controlled within ±2°. The inclination angle of the first reinforcing rod 6 is preferably 30°-60°, and its two ends are welded to the head tube 1 and the second reinforcing rod 7, respectively. The inclination direction of the third reinforcing rod 8 is consistent with that of the first reinforcing rod 6, and they can be arranged symmetrically with the same angle. As another embodiment, the cross-section of the reinforcing rod can be designed as a hollow rectangular tube or a circular tube with a wall thickness of 2-5mm, and the material is high-strength alloy steel.

[0033] It's worth noting that the connection of multiple reinforcing rods provides support in multiple directions, distributing the stress on the frame and thus enhancing the connection strength and overall stability between the front frame support tube 4 and the front frame reinforcing tube 5. This arrangement effectively resists vibrations and impacts generated during motorcycle operation, reducing the risk of frame deformation and damage. Furthermore, the optimized arrangement of the reinforcing rods improves the structural strength and stability of the frame, making it particularly suitable for applications requiring high frame strength, such as off-road motorcycles and racing motorcycles.

[0034] It should also be noted that a reinforcing connecting tube is provided at the connection between connecting rod 3 and front frame support tube 4. The reinforcing connecting tube can be implemented in the following ways: it can be a thickened steel pipe welded to the connection between the second reinforcing rod 7 and the front frame support tube 4, or it can be a special-shaped tube with internal reinforcing ribs, the cross-sectional shape of which is adapted to the connection point. During motorcycle operation, the vibration load on the frame is mainly transmitted through the connection nodes. The addition of the reinforcing connecting tube increases the stiffness of the connection point, thereby reducing the stress peak. Therefore, this technical solution significantly improves the fatigue resistance of the connection nodes and extends the service life of the frame. A more stable connection effect is achieved through structural optimization, making it particularly suitable for applications with high vibration loads, such as off-road motorcycles.

[0035] In an exemplary embodiment, the rear frame assembly includes a rear frame support tube 16 and a handrail tube 17. One end of the rear frame support tube 16 and the handrail tube 17 is detachably connected to the front frame support tube 4 via a connecting mechanism 15, and the other end of the rear frame support tube 16 is fixedly connected to the handrail tube 17.

[0036] In this embodiment, modular design enables rapid assembly and disassembly of the frame components while ensuring stable load-bearing capacity. The rear frame support tube 16, as the primary load-bearing component, forms an axial force transmission path with the front frame support tube 4. The triangular layout of the rear frame support tube 16, handlebar tube 17, and front frame support tube 4 effectively disperses torsional loads during driving. The detachable design of the connecting mechanism 15 facilitates maintenance and replacement, while the fixed connection ensures overall rigidity. Compared to existing welded frames, this structure significantly improves assembly efficiency and reduces maintenance costs while maintaining the same strength.

[0037] For example, the rear frame support tube 16 and the armrest tube 17 can be fixedly connected by welding to form an angle of 30°-45° to constitute a stable triangular structure. The end of the armrest tube 17 can be provided with mounting holes for fixing the rear seat cushion or luggage rack.

[0038] For example, the connection mechanism 15 includes a fixing head 1501 and a connecting head 1502. The fixing head 1501 and the connecting head 1502 are coaxially arranged and detachably connected by a fastener 1503. The connecting head 1502 is provided with a fixing part 1504, which is fixedly connected to the rear frame support tube 16 or the handlebar tube 17. The coaxial positioning structure ensures the alignment of the fixing head 1501 and the connecting head 1502 during installation, avoiding stress concentration caused by connection deviation. The fixing head 1501 and the connecting head 1502 are provided with a central threaded hole, and the detachable fastening structure of the fastener 1503 facilitates quick disassembly and assembly during maintenance. At the same time, the anti-loosening design ensures the stability of the connection. The rigid connection between the fixing part 1504 and the frame tube ensures effective load transfer. Compared with the traditional welded structure, this solution achieves modular disassembly and assembly while maintaining connection strength, solving the problem of inconvenient frame disassembly and assembly when off-road motorcycles require frequent maintenance under complex road conditions. The triple structure works together to give the connecting mechanism 15 positioning accuracy, easy assembly and disassembly, and reliable load-bearing capacity.

[0039] For example, in this embodiment, the fixing head 1501 is fixed to the front frame support tube 4 by welding. It is worth noting that the fixing part 1504 is rigidly fixed to the rear frame support tube 16 / handrail tube 17 by welding or bolt connection. In a specific embodiment, the fixing part 1504 is a cylindrical tubular structure with a step, the diameter of which is smaller than that of the rear frame support tube 16 or handrail tube 17. The step can enter the rear frame support tube 16 or handrail tube 17, and then the fixing part 1504 is welded to the rear frame support tube 16 or handrail tube 17 to achieve connection. In another embodiment, the fixing head 1501 and the connecting head 1502 can adopt a conical mating structure, and achieve coaxial positioning through self-centering of the taper; the fastener 1503 can also be a quick-release pin structure; the fixing part 1504 can be designed as a flange structure and fixed by four-hole bolts.

[0040] It should also be noted that in this embodiment, when the rear frame assembly needs to be disassembled, the fastener 1503 is removed, and the connector 1502 can be detached from the fixing head 1501, thereby realizing quick disassembly between the front frame assembly and the rear frame assembly.

[0041] In one exemplary embodiment, a fixing rod 10 is provided between the front frame reinforcing tubes 5, and a fixing block 11 for fixing the engine 19 is provided on the fixing rod 10. A bracket 12 for fixing the engine 19 is detachably connected to the connector 2.

[0042] In this embodiment, by setting a fixing rod 10 between the front frame reinforcing tubes 5, the local structural strength of the frame is enhanced, effectively resisting the vibration load during engine 19 operation. The fixing block 11 on the fixing rod 10 provides a stable mounting reference point for the engine 19, ensuring that the engine 19 does not shift during driving. The detachable bracket 12 on the connector 2 simplifies the disassembly and assembly process of the engine 19. During maintenance, only the connecting bolts of the bracket 12 need to be removed to remove the engine 19 as a whole, without damaging the main frame structure. The cooperation between the fixing rod 10 and the bracket 12 ensures the firmness of the engine 19 installation and meets the need for convenient maintenance. Compared with the prior art, this solution maintains the overall strength of the frame while improving the efficiency of engine 19 installation and maintenance through modular design.

[0043] For example, in this embodiment, the fixing rod 10 can be a round or square tube structure, with both ends fixed to the front frame reinforcing tubes 5 by welding or bolting. The fixing block 11 can be designed as a metal block with threaded holes, fixed to the fixing rod 10 by welding or bolting, and the threaded holes are used to install the engine 19 fixing bolts. The bracket 12 can be made of stamped steel plate, and can be detachably connected to the connector 2 by bolts. The bracket 12 is provided with a support surface that matches the bottom of the engine 19. The cross-sectional shape of the fixing rod 10 can be circular, rectangular or other polygonal, and its length can be adjusted according to the spacing of the front frame reinforcing tubes 5. The fixing block 11 can be provided with multiple mounting holes to adapt to the installation requirements of different models of engine 19. The bracket 12 can be designed as a split structure, consisting of two symmetrical parts joined by bolts, which facilitates the lateral installation and positioning of the engine 19.

[0044] It is worth noting that in this embodiment, due to the arrangement structure of the front frame support tube 4 and the front frame reinforcing tube 5, the bottom of the front frame assembly is hollowed out, and the engine 19 can be installed from the bottom upward into the installation space formed by the front frame assembly and then fixed, which further improves the assembly efficiency of the motorcycle.

[0045] In one exemplary embodiment, a mounting rod 13 is provided on the front frame support tube 4, and a mounting block 14 for fixing the shock absorber 18 is provided on the mounting rod 13.

[0046] In this embodiment, the installation rod 13 further enhances the structural strength of the front frame assembly and provides an installation environment for the shock absorber 18.

[0047] This utility model also proposes a motorcycle that includes the aforementioned motorcycle frame assembly.

[0048] In summary, this utility model effectively improves the overall strength of the frame by using a detachable connection design for the front and rear frame components and an optimized arrangement of the reinforcing bar components, while also facilitating frame assembly and disassembly.

[0049] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A motorcycle frame assembly, characterized in that, include: A front frame assembly, the front frame assembly including a head tube and a pair of connectors, a connecting rod between the connectors, a front frame support tube and a front frame reinforcing tube between the head tube and the connectors, and a reinforcing rod assembly connecting the front frame support tube and the front frame reinforcing tube. The rear frame assembly, the front frame assembly further includes a connecting mechanism, the rear frame assembly being detachably connected to the front frame assembly via the connecting mechanism.

2. The motorcycle frame assembly according to claim 1, characterized in that: The front frame support tube has a first horizontal section and a first bent connection section, and the front frame reinforcing tube has a second horizontal section and a second bent connection section. The ends of the first bent connection section and the second bent connection section are connected to the connector. The first bent connection section and the second bent connection section are welded together. The reinforcing rod assembly is disposed between the first horizontal section and the second horizontal section.

3. The motorcycle frame assembly according to claim 2, characterized in that: The reinforcing bar assembly includes a first reinforcing bar, a second reinforcing bar, a third reinforcing bar, and a fourth reinforcing bar that are connected end to end along the extension direction of the front frame support tube and the front frame reinforcing tube.

4. The motorcycle frame assembly according to claim 3, characterized in that: The second and fourth reinforcing rods are arranged perpendicular to the front frame support tube and the front frame reinforcing tube, the first reinforcing rod is inclined at one end of the front tube and the second reinforcing rod, and the third reinforcing rod is inclined between the second and fourth reinforcing rods. The first and third reinforcing rods are inclined in the same direction.

5. The motorcycle frame assembly according to claim 4, characterized in that: A reinforcing connecting tube is provided at the connection between the connecting rod and the front frame support tube.

6. The motorcycle frame assembly according to claim 1, characterized in that: The rear frame assembly includes a rear frame support tube and a handrail tube. One end of the rear frame support tube and the handrail tube are detachably connected to the front frame support tube via the connecting mechanism, and the other end of the rear frame support tube is fixedly connected to the handrail tube.

7. The motorcycle frame assembly according to claim 6, characterized in that: The connecting mechanism includes a fixing head and a connecting head. The fixing head and the connecting head are coaxially arranged, and the fixing head and the connecting head are detachably connected by fasteners. The connecting head is provided with a fixing part, which is fixedly connected to the rear frame support tube or the handrail tube.

8. The motorcycle frame assembly according to claim 1, characterized in that: A fixing rod is provided between the front frame reinforcing tubes, and a fixing block for fixing the engine is provided on the fixing rod. A bracket for fixing the engine is detachably connected to the connector.

9. The motorcycle frame assembly according to claim 1, characterized in that: The front frame support tube is equipped with a mounting rod, and the mounting rod is equipped with a mounting block for fixing the shock absorber.

10. A motorcycle, characterized in that: Includes the motorcycle frame assembly as described in any one of claims 1-9.

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