CN201305085Y - Motorcycle chassis - Google Patents

Abstract

The utility model discloses a motorcycle chassis, which comprises a chassis girder, a right lower tube, a left lower tube, a right side tube and a left side tube; wherein, the right lower tube and the left lower tube are arranged symmetrically; the right side tube and the left side tube are arranged symmetrically; the front ends of the right side tube and the left side tube are connected together by a stamped part with a U-shaped section; the opening of the stamped part faces downwards to wrap the right side tube and the left side tube; and the stamped part is integrally connected with the right side tube and the left side tube. A left reinforcing tube and a right reinforcing tube are respectively welded between the front end of the right side tube and the U-shaped bottom of the right lower tube and between the front end of the left side tube and the U-shaped bottom of the left lower tube. The utility model reduces the manufacturing technique difficulty and cost of the chassis, whereas the strength is higher and assembly is more convenient; moreover, a larger space is provided for mounting an engine, the secondary processing of the chassis is not needed, and thereby, the requirement on the space for mounting the engine is met. In particular, by arranging the left and the right reinforcing tubes, the left and the right lower tubes can be formed into a quadrangular frame structure, thus further enhancing the rigidity and strength of the chassis.

Description

A kind of frame of motorcycle

Technical field

The utility model relates to a kind of motorcycle frame structure, and especially a kind of manufacturing process is simple, the pedal motorcycle vehicle frame of vehicle frame good rigidly.

Background technology

Frame of motorcycle is the basic component of motor bike, and all parts all will be installed on the vehicle frame, the position that each parts is kept relative stability; Simultaneously, vehicle frame need bear the impact load that produces in the quality of parts such as driving engine and the driving process.Therefore, frame of motorcycle requires that enough strength and stiffness are arranged, and makes every effort to little quality simultaneously, to alleviate dead weight of vehicle.The kind of existing frame of motorcycle is various, structure is different, can be divided into two kinds of steel pipe type and steel plate types by the material of making, and steel pipe type vehicle frame major part all is to be welded with pipe, and small part adopts square or special steel pipe is made.Cradle-type frame is a kind of of steel pipe type vehicle frame, and its structure is relatively complicated, but intensity and rigidity are better, is suitable for the bigger motor bike of power and uses.

In the prior art, cradle-type frame of motorcycle (referring to Fig. 5) mainly comprises vehicle frame main beam 9, bottom right pipe 10, lower-left pipe 11, cross sill 12 and the right pipe 20 and left side pipe 21 etc.; Wherein, the structure of the right pipe 20 and left side pipe 21 mainly contains two kinds, and a kind of is that a complete tube bending forms, and this left and right sides Bian Guan is referred to as the back pipe; The posterior segment of back pipe adopts steel pipe transverse to connect, and the front end of back pipe bends to the U type, and this back pipe is because U type sinuousness is bigger, wayward, and its difficulty of processing is bigger, and forming process is comparatively complicated; And the wrinkling deformation defect of Denging can take place in the steel pipe in knee after the bending of steel pipe front end.Simultaneously, if also need to flatten moulding at back pipe front end crooked position, moulding is difficulty not only, and has the forming defect existence, thereby influences the service life of steel pipe.Another kind, the right pipe 20 and left side pipe 21 are independently two, are laterally connected by preceding steel pipe 461, this employing steel-tube construction ways of connecting has the following disadvantages: the first, the connection between the steel pipe, joint face is less, influences the stability and the rigidity of vehicle frame; Second, because vehicle frame is after installing driving engine, need to give the parts such as cylinder head of driving engine to stay motion space, so need and to flatten (steel pipe 461 bottoms promptly) to position, the first-class parts top of the engine cylinder on the vehicle frame, so not only increase manufacturing procedure, and reduced the aesthetic feeling and the quality of outward appearance.

In addition, the force part of existing frame of motorcycle bottom right pipe 10 and lower-left pipe 11, promptly the bottom right pipe 10 and the lower-left pipe 11 of 21 bottoms managed on the right pipe 20 and the left side, also need to weld punch forming part 462 and strengthen its intensity, but this kind strengthened the structure of intensity and had following deficiency, the one, adopt the punching press weldment, cost of manufacture is higher; The 2nd, the punching press weldment is less to the rigidity booster action of vehicle frame.

The utility model content

At the prior art above shortcomings, the purpose of this utility model provides a kind of reduction manufacturing process difficulty and manufacturing cost, guarantees the frame of motorcycle of vehicle frame rigidity and intensity.

The purpose of this utility model is achieved in that a kind of frame of motorcycle, comprises vehicle frame main beam, symmetrically arranged bottom right pipe, lower-left pipe, and symmetrically arranged the right pipe and left side pipe; The front end of bottom right pipe and lower-left pipe is connected to the both sides of vehicle frame main beam bottom, and the rear end of bottom right pipe and lower-left pipe is connected with the front portion of left side pipe with the right pipe respectively; It is characterized in that described the right pipe is connected by U type cross section blanked part with the front end of left side pipe; Open Side Down for described U type cross section blanked part, with the right pipe and left side pipe coating wherein and link into an integrated entity.

The described left and right general shape of pipe down is the U type, between the U-bottom portion of described the right pipe front end and bottom right pipe, and is welded with left and right reinforced pipe respectively between the U-bottom portion of left side pipe front end and lower-left pipe.

Described right reinforced pipe is parallel to the U-shaped vertical edges setting of bottom right pipe, and forms the quadrilateral frame shelf structure jointly with bottom right pipe, the right pipe; Described left reinforced pipe is parallel to the U-shaped vertical edges setting of lower-left pipe, and forms the quadrilateral frame shelf structure jointly with lower-left pipe, left side pipe.

Compared to existing technology, the utlity model has following beneficial effect:

1, the left and right limit of the vehicle frame of the utility model frame of motorcycle pipe, adopt the blanked part structure in U type cross section to replace steel pipe to connect, because the blanked part in U type cross section adopts the steel plate one-shot forming to be stamped to form, reduced vehicle frame manufacturing process difficulty, forming defect is few, and condemnation factor is low, and cost is lower, intensity is better, connects more convenient.

2, the described U type cross section blanked part in the utility model frame of motorcycle, Open Side Down is provided with, and with the right pipe and left side pipe coating wherein and link into an integrated entity, not only can increase the location area of connecting portion; Also provide bigger space, do not needed, just can satisfy the space requirement that driving engine and engine wobble are installed its secondary processing for driving engine is installed.

3, the utility model frame of motorcycle, between the left side of frame of motorcycle pipe, the right pipe and lower-left pipe, bottom right pipe, left and right reinforced pipe is set respectively, make itself and left side pipe, lower-left pipe and the right pipe, bottom right pipe form tetragonal framed structure respectively, the intensity and the rigidity of vehicle frame have been strengthened, and satisfying under vehicle frame rigidity and the intensity prerequisite, reduce the manufacture difficulty of vehicle frame, and effectively reduced manufacturing cost.

Description of drawings

Fig. 1 is the perspective view of the utility model frame of motorcycle;

Fig. 2 is the birds-eye view of the utility model frame of motorcycle;

Fig. 3 is the left side view of the utility model frame of motorcycle;

Fig. 4 is the right side view of the utility model frame of motorcycle;

Fig. 5 is existing cradle-type frame of motorcycle scheme drawing.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the utility model frame of motorcycle comprises vehicle frame main beam 9, and the top of vehicle frame main beam 9 links to each other with seat tube 4; Vehicle frame main beam welds by 9 terminal extensions downwards with the middle part of cross sill 12; The left and right sides of the middle and lower part of vehicle frame main beam 9 is symmetrical arranged (welding respectively) and is the bottom right pipe 10 of U type and the lower-left pipe 11 of U type, the U-bottom portion of bottom right pipe 10 and lower-left pipe 11 is used for the feet pedal jointly, weld mutually with the U-bottom portion of bottom right pipe 10 and lower-left pipe 11 at the two ends of cross sill 12, and this weld nugget is the best with close U-bottom portion front curve place.Weld the front end bottom surface of the end of bottom right pipe 10 and the right pipe 20, is provided with the right adapter plate 32 of engine lifting bracket that is used to install driving engine in the behind of bottom right pipe 10 and the bottom of the right pipe 20; Weld the front end bottom surface of the end of lower-left pipe 11 and left side pipe 21, also is provided with the engine lifting bracket left side adapter plate 31 that is used to install driving engine in the behind of lower-left pipe 11 and the bottom of left side pipe 21; The right pipe 20 links to each other with left side pipe 21 terminal transverse tubes 34 by the vehicle frame afterbody, and the right is managed 20 and managed 21 middle parts with the left side and link to each other by the transverse tube 341 in the middle part of the vehicle frame; The front end of the right pipe 20 and left side pipe 21 links to each other by welding or riveted way with the two ends of U type cross section blanked part 46; The front end of the two ends, bottom of described U type cross section blanked part 46 and left side pipe 21 and the right pipe 20 is complementary.In the utility model, the front end of described the right pipe 20 and left side pipe 21 is connected by U type cross section blanked part 46; Open Side Down for described U type cross section blanked part 46, and with the right pipe 20 with left side pipe 21 coats wherein and welding or riveted joint fuse, it is bigger to connect area, and firmness is higher.Because the U type cross section blanked part 46 that adopts is that steel plate is one time punching molded, the degree of depth of its sinuousness and U type groove greatly reduces the difficulty of manufacturing process by mould shape, and forming defect is few, and condemnation factor is low, thereby cost is lower, and enough intensity is arranged.And,, can increase installation and swing space to driving engine because the bottom surface of U type cross section blanked part 46 is the inner concave shape space.

In addition, the front bottom end of the right pipe 20 and left side pipe 21 is welded with right reinforced pipe 14 and the left reinforced pipe 24 that is used to increase the vehicle frame rigidity respectively, left and right reinforced pipe upper end weld nugget be positioned at bottom right pipe 10 and lower-left pipe 11 respectively with the weld nugget of the right pipe 20 and left side pipe 21 before better; Two vehicle frames connect reinforced pipes 14 and 24 lower end respectively with the U-shaped bottom welding mutually of bottom right pipe 10 and lower-left pipe 11, this weld nugget is being good near knee after the U-bottom portion of bottom right pipe 10 and lower-left pipe 11.

After right reinforced pipe 14 and 24 welding of left reinforced pipe are good, the framed structure of 20 quadrangularlies is managed on right reinforced pipe 14 and bottom right pipe 10 and the right, in like manner left reinforced pipe 24 is also managed the framed structure of 21 quadrangularlies with the lower-left pipe 11 and the left side, the limit that the framed structure of described four limit row is long parallels.Therefore, the use of right reinforced pipe 14 and left reinforced pipe 24 has effectively strengthened the rigidity and the intensity of vehicle frame, has obviously improved the weight capacity of vehicle frame.And right reinforced pipe 14 and left reinforced pipe 24 do not need special making, only need the fished pipe machinework is got final product.

As shown in Figures 2 and 3, also be welded with front fork brace panel 3 between the seat tube 4 at vehicle frame main beam 9 of the present utility model and vehicle frame main beam 9 tops, be used for fixing the position between vehicle frame main beam 9 and the seat tube 4; In addition, on vehicle frame main beam 9, also be provided with folder backboard support 52, horn bracket 53, map pocket upper support 54, coolant storage tank strut member 55, preceding cooling water pipe support 7, cover panel supplemental support 6 and air baffle lower support 8; The bottom of seat tube 4 is provided with limiting steering piece 1, is positioned to be provided with front panel support mount pad 2 on seat tube 4 bottoms and the limiting steering piece 1, is provided with radiator bearer 56 and ignition lock support 5 at the middle part of seat tube 4.

As Fig. 2, Fig. 3 and shown in Figure 4, foot-operated backplanes support 50 and rear treadle backplanes support 47 before being respectively equipped with in the U-bottom portion of bottom right pipe 10 and lower-left pipe 11, U-bottom portion is respectively equipped with after cooling water pipe strut member 13 by the inboard in knee, back; Back knee in the U-bottom portion of bottom right pipe 10 and lower-left pipe 11 also is respectively equipped with inboard reinforcement 15 of vehicle frame and side stand connecting panel 16; Secondary leg rest mount pad support tube 43 before on vehicle frame bottom right pipe 10 and vehicle frame lower-left pipe 11, also being welded with respectively, also be welded with the secondary leg rest mount pad support tube 41 in back respectively at engine lifting bracket left side adapter plate 31 and the right adapter plate 32 of engine lifting bracket, the terminal junction of preceding secondary leg rest mount pad support tube 43 and the secondary leg rest mount pad support tube 41 in back is provided with secondary leg rest supporting seat 40.Front end relative position place also is respectively equipped with and supports 45 before the baggage container, supports behind the baggage container 17 and Der Blink und Abblendschalter strut member 39 in the right pipe 20 and the left side pipe 21, relative position place, rear end is provided with successively respectively and supports 38 before the fuel tank, supports 36 behind the fuel tank pressing plate mount pad 19, fuel tank in the right pipe 20 and the left side pipe 21, supports 38 the outside and be provided with electrical part and support 18 before fuel tank; Combination 33 and bench lock strut member 35 are installed after also being provided with luggage carrier on the transverse tube 34 of vehicle frame afterbody.

As shown in Figure 3 and Figure 4, manage on the right 20 and left side pipe 21 in the bottom surface of rear end be provided with support 22 before the rear mudguard, support in the rear mudguard 26 and rear mudguard after support 25; Be provided with back damping supporting seat 23 between before rear mudguard, supporting 26 in support 22 and the rear mudguard; Manage on the right 20 and left side pipe 21 in the relative position place, bottom surface of front end also be provided with negative pressure pump strut member 30, variable voltage rectifier strut member 29 and ignition ring strut member 28 respectively successively.

Adopt the cross section punching press of U type to be made of welded connection between the pipe of the left and right limit of the vehicle frame of the utility model frame of motorcycle, the vehicle frame lateral rigidity can be effectively strengthened, simultaneously, the technology difficulty of making can be reduced, avoid the defective of curved technology of bringing of pipe and material aspect, condemnation factor is low; Also can increase the space that driving engine and engine wobble are installed.Simultaneously, between left side pipe and the lower-left pipe, adopting vehicle frame to connect reinforced pipe respectively between the right pipe and the bottom right pipe strengthens the vehicle frame rigidity, satisfying under rigidity of frame and the intensity prerequisite, has reduced the manufacture difficulty of part, and effectively reduced manufacturing cost.

Claims (3)

1, a kind of frame of motorcycle comprises vehicle frame main beam (9), symmetrically arranged bottom right pipe (10), lower-left pipe (11), and symmetrically arranged the right pipe (20) and left side pipe (21); The front end of bottom right pipe (10) and lower-left pipe (11) is connected to the both sides of vehicle frame main beam (9) bottom, and the rear end of bottom right pipe (10) and lower-left pipe (11) is connected with the front portion of the right pipe (20) with left side pipe (21) respectively; It is characterized in that described the right pipe (20) is connected by U type cross section blanked part (46) with the front end of left side pipe (21); Open Side Down for described U type cross section blanked part (46), with the right pipe (20) and left side pipe (21) coating wherein and link into an integrated entity.

2, frame of motorcycle according to claim 1, it is characterized in that, between the U-bottom portion of the front end of described the right pipe (20) and bottom right pipe (10), and be respectively equipped with left and right reinforced pipe (14,24) between the U-bottom portion of the front end of left side pipe (21) and lower-left pipe (11).

3, frame of motorcycle according to claim 2 is characterized in that, the U-shaped vertical edges that described right reinforced pipe (14) is parallel to bottom right pipe (10) is provided with, and forms the quadrilateral frame shelf structure jointly with bottom right pipe (10), the right pipe (20); The U-shaped vertical edges that left side reinforced pipe (24) is parallel to lower-left pipe (11) is provided with, and forms the quadrilateral frame shelf structure jointly with lower-left pipe (11), left side pipe (21).

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