High-rigidity light-weight scooter frame

Abstract

The invention discloses a high-rigidity light-weight scooter frame. A main pipe is connected with a head pipe, each first assistant pipe comprises a front section part and a rear section part and is of a two-section separation structure, the front section part comprises a connection section connected with the main pipe and a horizontal section, an engine suspending support is fixed above the horizontal section; the rear section part comprises an ascent section connected with the horizontal section, an expansion section, a tapered section and a tail section; the two ends of a support connectingpipe are fixed above the engine suspending support, a side pipe is fixed at the lower end of the main pipe and on the horizontal section of the front section part of a second assistant pipe, and thetwo ends of a storage compartment connecting pipe are fixed at the ascent section of the rear section part of the second assistant pipe. The high-rigidity light-weight scooter frame has better rigidity and higher strength compared with the previous frame, the support is simplified, weight is reduced, cost and expense for a mould, a jig and a checking fixture are respectively reduced, different materials, pipe diameters and pipe thicknesses can be selected according to different demands, style trend also can be adjusted according to different vehicle models and appearance, and a diversified multifunctional motorcycle frame with mould shareability and platform uniformity is developed.

Description

technical field [0001] The invention relates to a high-rigidity and lightweight scooter frame. Background technique [0002] Existing motorcycle frame 80 structure such as figure 1 with figure 2 Shown, generally by a head pipe 82, a main pipe 83, two auxiliary pipes 84, two brackets 85, a glove box connecting pipe 86, two rear shock absorber brackets 87, a front connecting pipe 88, two front connecting pipe reinforcing pieces 881 And a tail end connecting pipe 89 is formed. The upper end of the main pipe 83 is connected to the head pipe 82, and the lower end extends to the front connecting pipe 88 toward the rear end of the vehicle frame 80. The two ends of the front connecting pipe 88 are fixed on the lower end of the secondary pipe 84. On the left and right sides, each auxiliary pipe 84 extends toward the rear end of the vehicle frame 80 in an integrated form until the tail end. In addition, the storage box connecting pipe 86 is fixed on the upper side of the second au...

AI Technical Summary

Problems solved by technology

[0003] Since the main pipe 83 must extend toward the rear end of the vehicle frame 80 until the front connecting pipe 88 of the vehicle frame 80, the design of the fuel tank in the front will reduce the capacity of the fuel tank, and the rear of the fuel tank will affect the volume of the trunk. In addition , in order to ensure that the rigidity and strength of the vehicle frame 80 meet the requirements of the test, a front connecting tube reinforcement piece 881 is added at the lower end of the front connecting tube 88 and the second auxiliary tube 84 of the vehicle frame 80, so that the overall weight of the vehicle frame 80 increases, and the mold, The cost of inspection tools and fixtures increases, and the structure is relatively complicated

[0004] The engine suspension of the motorcycle is connected to the vehicle frame 80 and the engine, and is usually installed on the bracket 85, because the second secondary pipe 84 is an integrally formed style, and the bracket 85 is fixed at the bend of the secondary pipe 84. The bending part is where the rigidity of the entire frame 80 is relatively weak. Therefore, in order to meet the strength requirements of the bracket 85, the design of the bracket 85 is complicated and the thickness of the plate is thickened. This measure greatly increases the weight of the frame 80. And the cost of molds, inspection tools, and fixtures increases, and the structure is relatively complicated

[0005] The secondary pipe 84 is from the front end of the vehicle frame 80 to the rear end of the vehicle frame 80. The length is relatively long, and after integral molding, the shape variable is large, which will lead to unstable precision of the other secondary pipes 84 fixed on it, and large manufacturing variability. And the strength is unstable, all need reinforcement sheets, which will also increase the weight of the frame and increase the cost

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