CN-121990084-A - Front mudguard mounting structure of cross-country motorcycle

Abstract

The invention belongs to the technical field of motorcycles, and mainly relates to a front mudguard mounting structure of an off-road motorcycle, which comprises bracket mounting plates arranged at the lower part of a steering column assembly of the motorcycle, wherein the bracket mounting plates are of polygonal plate structures, flanging lug plates bent at 90 degrees are arranged at two ends of a panel of the bracket mounting plates, mounting holes are further formed in the flanging lug plates, projection welding nuts which are uniformly distributed are arranged at four corners at the top of the panel of the bracket mounting plates, step counter bores which are symmetrically arranged are further arranged between the projection welding nuts, and mounting auxiliary plate assemblies connected with the bracket mounting plates are further arranged at the bottom of the bracket mounting plates. According to the invention, the support system with dynamic buffering capacity is constructed by adopting the support mounting plate structure, so that the overall rigidity and connection stability of the front mudguard mounting structure are obviously improved, the loosening risk is reduced, the production and manufacturing cost is reduced, the disassembly and replacement efficiency during maintenance is improved, and the dual benefits of function improvement and process optimization are realized.

Inventors

• MA BING
• MA XUEHONG
• LIU DONGBAO
• WANG YUN

Assignees

• 洛阳北方易初摩托车有限公司

Dates

Publication Date

20260508

Application Date

20260330

Claims (9)

1. 1. A mounting structure of a front mudguard of an off-road motorcycle comprises support mounting plates (1) arranged at the lower part of a steering column assembly (12) of the off-road motorcycle, and is characterized in that the support mounting plates (1) are of polygonal plate structures, flanging lug plates (2) bent at 90 degrees are arranged at two end parts of a panel of the support mounting plates, mounting holes (13) are further formed in the flanging lug plates (2), projection welding nuts (3) are uniformly distributed at four corners of the top of the panel of the support mounting plates (1), symmetrically-arranged step counter bores (4) are further formed between the projection welding nuts (3), and mounting auxiliary plate (5) assemblies connected with the support mounting plates are further arranged at the bottom of the support mounting plates (1).
2. 2. The front fender mounting structure for an off-road motorcycle according to claim 1, wherein the mounting sub-plate (5) assembly comprises a mounting sub-plate (5), the mounting sub-plate (5) is arranged at the lower part of the bracket mounting plate (1), and the mounting sub-plate (5) is of a polygonal structure as a whole and has the same shape and volume as the bracket mounting plate (1), and is connected with each other through symmetrically arranged split spring bolts (6).
3. 3. The mounting structure of the front mudguard of the cross-country motorcycle according to claim 1, wherein projection welding nuts (3) are uniformly distributed at four corners of the top of the plate surface of the mounting auxiliary plate (5), and symmetrically arranged step counter bores (4) are further arranged between the projection welding nuts (3).
4. 4. The mounting structure for the front mudguard of the cross-country motorcycle according to claim 2, wherein the top of the split spring bolt (6) is inserted into the step counter bore (4) of the bracket mounting plate (1), the bottom of the split spring bolt is inserted into the step counter bore (4) of the mounting auxiliary plate (5), and matched positioning nuts (7) are respectively arranged at the top and the bottom of the bolt for fastening.
5. 5. The mounting structure of the front mudguard of the cross-country motorcycle according to claim 2 is characterized in that the main body of the split spring bolt (6) is a double-thread bolt (8), fixing blocks (9) which are arranged up and down are sleeved at the middle parts of the split spring bolt, compression springs (10) are arranged between the fixing blocks (9), the compression springs (10) encircle the outer sides of the double-thread bolt (8), and two ends of the fixing blocks (9) are fastened through positioning nuts (7).
6. 6. The front fender mounting structure for an all terrain motorcycle according to claim 1, wherein the front fender (11) is connected to the lower portion of the bracket mounting plate (1).
7. 7. The front fender mounting structure for an all terrain motorcycle according to claim 1, wherein a front fender (11) is connected to a lower portion of the mounting sub-plate (5).
8. 8. The front mudguard mounting structure of the dirtbike as claimed in claim 1, characterized in that the bracket mounting plate (1) and the mounting auxiliary plate (5) can be of a hexagonal plate structure.
9. 9. The front mudguard mounting structure of the dirtbike as claimed in claim 1, characterized in that the bracket mounting plate (1) and the mounting auxiliary plate (5) are all one-time stamping formed plate pieces.

Description

Front mudguard mounting structure of cross-country motorcycle Technical Field The invention belongs to the technical field of motorcycles, and mainly relates to a front mudguard mounting structure of an off-road motorcycle. Background The front mudguard of the motorcycle is used as a key component in the external decoration and function protection system of the whole motorcycle, and bears the core function of effectively blocking and isolating mud, sewage and other impurities from the front wheels from splashing upwards when the motorcycle runs so as to keep the body surface of the rider and part of the vehicle body clean. In the whole body interior and exterior decoration construction system of the motorcycle, the combination of the front mudguard and the mounting framework thereof is a basic link for ensuring that the components can be stably and accurately assembled and can exert the effect for a long time. However, the front mudguard mounting scheme commonly adopted in the market has a plurality of obvious defects and improvable parts, namely firstly, the connection stability and the structural rigidity of mounting points are insufficient, when a motorcycle, particularly an off-road motorcycle, runs at a high speed on a complex bumpy road surface, continuous and severe vibration is extremely easy to cause fatigue loosening of connecting pieces (such as screws, buckles or brackets), further the whole or partial loosening and displacement of the mudguard are caused, the functions of the parts are influenced, the safety running and the whole stability of the motorcycle are more likely to be potentially threatened, secondly, the reserved gap between the lower edge of the front mudguard and the tire tread in common design is generally deviated to be narrow, the splashed silt is extremely easy to be rapidly accumulated and hardened in the narrow space under the severe road conditions such as mud, sand and the like, the rolling resistance of the front wheel is greatly increased, the dynamic performance and the control flexibility of the vehicle are influenced, the long-term accumulation is likely to cause abnormal on the tires and peripheral parts, finally, the conventional structural design is poor in terms of manufacturing and field assembly, the process design is very difficult to be assembled, the spare parts are likely to be excessively complicated or the manufacturing and the maintenance is excessively difficult to be removed, and the maintenance is difficult to be excessively low in manufacturing and maintenance process is required to be excessively low. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a front mudguard mounting structure of an off-road motorcycle, which solves the problems of insufficient stability, sediment accumulation, high process cost and the like of the existing structure by optimizing a supporting and connecting system and a gap adjusting mechanism, and aims to improve the mounting reliability and the use durability of the front mudguard, and simplify the assembly process to reduce the manufacturing cost. In order to solve the technical problems, the invention adopts the following technical scheme: The mounting structure of the front mudguard of the cross-country motorcycle comprises a bracket mounting plate arranged at the lower part of a steering column component of the cross-country motorcycle, wherein the bracket mounting plate is of a polygonal plate structure, two end parts of a panel of the bracket mounting plate are provided with flanging lug plates bent at 90 degrees, mounting holes are further formed in the flanging lug plates, projection welding nuts which are uniformly distributed are arranged at four corners of the top of the panel of the bracket mounting plate, step counter bores which are symmetrically arranged are further arranged between the projection welding nuts, and a mounting auxiliary plate component connected with the bracket mounting plate is further arranged at the bottom of the bracket mounting plate. The installation auxiliary plate assembly comprises an installation auxiliary plate, the installation auxiliary plate is arranged at the lower part of the support mounting plate, the installation auxiliary plate is integrally of a polygonal structure and is identical to the support mounting plate in shape and size, and the installation auxiliary plate and the support mounting plate are connected with each other through symmetrically arranged split spring bolts. Projection welding nuts are uniformly distributed at four corners of the top of the plate surface of the installation auxiliary plate, and symmetrically arranged step counter bores are further formed between the projection welding nuts. The top of the split spring bolt is inserted into the step counter bore of the support mounting plate, the bottom of the split spring bolt is inserted into the step counter bore of the mounting auxiliary plate, and matched