CN1443677A

CN1443677A - Fuel tank supporting structure for motorcycle

Info

Publication number: CN1443677A
Application number: CN03121632A
Authority: CN
Inventors: 佐藤彰一郎; 桑原幸重; 中井信男
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2002-03-08
Filing date: 2003-03-10
Publication date: 2003-09-24
Anticipated expiration: 2023-03-10
Also published as: KR100472327B1; MY130348A; KR20030074302A; BR0300455A; JP4116799B2; CN1196616C; JP2003261082A; BR0300455B1; AR039599A1

Abstract

A front and rear of the fuel tank is supported on a seat rail 14 via the rubber member 218, and a stopper 244 preventing shrinkage exceeding the certain value C1 of the rubber material 218 is protrudedly formed from one to another of tank brackets 202 of a seat rail 14 side and a fuel tank 31 side. It reduces size of a body and maintain cushioning performance of a seat and a capacity of fuel tank by regulating a displacement of the fuel tank exceeding a certain value even when a size of a rubber member is reduced by a permanent set caused by secular change due to a load acting on the rubber member from a fuel tank side for a long time and eliminating a need to provide a large clearance for preventing interference between the fuel tank and components arranged around the fuel tank.

Description

The fuel tank supporting structure of motor bike

[technical field]

The present invention relates to the fuel tank supporting structure of motor bike, particularly, relate to the improvement technology of the structure that supports via elastic component.

[prior art]

As the fuel tank supporting structure of motor bike, for example, known have a real public clear 57-8539 communique described " erecting device of the fuel tank in the two-wheel car ".

In Fig. 2 of above-mentioned communique, described that via elastic component 8,10 fuel tank 2 is installed on vehicle body frame 5 (for label, use the label that uses in this communique, below identical), the device at seat 1 is installed on the top of fuel tank 2.

When having fuel tank 2 from seat 1 when affacting big load on the elastic component 8,10 for a long time, owing to be compressed in elastic component 8, produce permanent deformation on 10, for example can cause the interference of fuel tank 2 and vehicle body frame 5 and other parts, perhaps can on fuel tank 2 and seat 1, produce and rock.

In order to prevent this problem, estimate above-mentioned permanent deformation, the profile of elastic component 8,10 is strengthened, make it not disturb with other parts, do not produce and rock, but need the height of fuel tank 2 to increase, the amount of increasing is equivalent to the amount with elastic component 8,10 increasings, the seat surface at seat uprises, the inappropriate part that causes two-wheel car to maximize.

In addition, for the seat surface with seat 1 remains on specified height, for example, if with the reduced thickness at seat 1, can damage cushion characteristic, if reduce the capacity of fuel tank 2, the operating range when filling it up with oil falls short of.

[summary of the invention]

Therefore, the objective of the invention is, by improvement to the fuel tank supporting structure of motor bike, there is not the influence of the permanent deformation of the elastic component between vehicle body frame and fuel tank, make the wheel miniaturization, and, the cushion characteristic of vehicle seat and the capacity of fuel tank kept.

For achieving the above object, the supporting structure of scheme 1 described bike tank, vehicle seat is being arranged on body tail, fuel tank is configured in the motor bike of below of vehicle seat, it is characterized by, the anteroposterior diameter of fuel tank is bearing on the vehicle body frame by elastic component, and, the block piece that the contraction that prevents these elastic components surpasses certain value formed highlightedly to another one of from vehicle body frame and fuel tank.

Prevent that by setting elastic member contracts from surpassing the block piece of certain value, even owing to for a long time load is affacted on the elastic component from the fuel tank side, variation elastic component generation permanent deformation along with the time, the size of elastic component reduces, and also can limit the displacement that fuel tank surpasses certain value.Thereby, needn't and be configured between the fuel tank parts on every side at fuel tank the big spacing that prevents to disturb usefulness is set, can make the vehicle body miniaturization, and, the height dimension of vehicle seat and fuel tank needn't be dwindled, the cushion characteristic of vehicle seat and the capacity of fuel tank can be kept.

Scheme 2 described bike tank supporting structures is characterized by, but the seat hinge of freely openable ground supporting saddle are installed to the top of fuel tank via damper element.

By the vehicle seat elastic support on fuel tank, with the fuel tank elastic support on vehicle body frame, can further prevent this passenger of transfer of vibration with driving engine.

[simple declaration of accompanying drawing]

Fig. 1, be the lateral plan that adopts according to the motor bike of fuel tank supporting structure of the present invention.

Fig. 2, be lateral plan according to the main portion of the vehicle body frame of motor bike of the present invention.

Fig. 3, be back view according to the main portion of the vehicle body frame of motor bike of the present invention.

Fig. 4, be the 4-4 line section-drawing of Fig. 2.

Fig. 5, be Fig. 25 to view.

Fig. 6, be Fig. 26 to view.

Fig. 7, be the transparent view of explanation according to the fuel tank supporting structure of motor bike of the present invention.

Fig. 8, be the transparent view of explanation according to the vehicle seat supporting structure main portion of motor bike of the present invention.

Fig. 9, be the transparent view of explanation according to the supporting structure of the fuel tank of motor bike of the present invention and vehicle seat.

Figure 10, be the section-drawing of explanation according to the supporting structure of the anterior bottom of the fuel tank of motor bike of the present invention.

Figure 11, be the 11-11 line section-drawing of Fig. 9.

Figure 12, be the section-drawing of explanation according to the supporting structure at the rear portion of the fuel tank of motor bike of the present invention.

Figure 13, be the 13-13 line section-drawing of Fig. 9.

Figure 14, be the section-drawing of front supporting structure of the vehicle seat of explanation motor bike of the present invention.

Figure 15, be first action diagram of explanation according to the effect of rubber component of the present invention.

Figure 16, be second action diagram of explanation according to the effect of rubber component of the present invention.

Figure 17, be the section-drawing of explanation according to another form of implementation of the supporting structure of the anterior bottom of fuel tank of the present invention.

Figure 18, be explanation according to another of the supporting structure at the rear portion of fuel tank of the present invention

The section-drawing of form of implementation.

[nomenclature]

10 ... motor bike, 11 ... vehicle body frame, 31 ... fuel tank, 32 ... vehicle seat, 207 ... seat hinge, 218,221 ... elastic component (rubber component), 222 ... damper element (rubber component), 244,251,266,272 ... block piece, 261 ... mounting hole, C1～C4 ... certain value.

[working of an invention form]

Form of implementation of the present invention is described below with reference to the accompanying drawings.Wherein, observe drawing according to the indication of label.

Fig. 1 is the lateral plan that adopts according to the motor bike of fuel tank supporting structure of the present invention, motor bike 10, by constituting with the lower part: vehicle body frame 11 is (by the head pipe 12 of front end, from the beginning manage 12 persons in charge 13 that extend to the back lower place, from being responsible for the free a pair of vehicle seat horizontal bar 14 that extend to the back upper place 13 centre, 14 (the vehicle seat horizontal bars 14 of not shown inboard), be installed in the pivot plate 15 at the person in charge 13 rear portion, the lower end is connected to these person in charges' 13 the rear end and the rear portion of pivot plate 15, be connected to vehicle seat horizontal bar 14 to the back upper place setting and with the rear end, backstay 16 on 14,16 (backstays 16 of not shown inboard) constitute), be rotatably installed in the Handle axis 22 on the pipe of this vehicle body frame 11, front fork 23 on the bottom of this Handle axis 22 is installed, be installed in the front-wheel 24 on the lower end of this front fork 23, be installed in the handle 25 on the top of Handle axis 22, be installed to the power unit 26 on the person in charge 13 and the pivot plate 15, can be installed to the swing arm 27 on the pivot plate 15 with swinging up and down, be installed in the trailing wheel 28 on the rear end of this swing arm 27.

In addition, motor bike 10, comprise: be installed in vehicle seat horizontal bar 14, fuel tank 31 on 14, can be installed in the vehicle seat 32 of the front upper portion of this fuel tank 31 with opening and closing, cover the interior rear mudguard 33 on the top of trailing wheel 28 by the lower rear that is configured in this vehicle seat 32, be installed in the outer rear mudguard 34 on the rear portion of rear mudguard 33 in this, be installed in the taillight 35 of the person in charge 13 rear end, the end is respectively installed to the back buffer cell of being responsible in 13 sides and the swing arm 27 36,36 (the back buffer cells 36 of not shown inboard), freeing pipe 38 and silencer 41 from the driving engine 37 of the front portion that constitutes power unit 26 rearward extends are used to hold battery 42, observe from the side and be configured in by the aforementioned person in charge 13, battery container 44 in the triangle space 43 that vehicle seat horizontal bar 14 and backstay 16 form.

Here, the 51st, handle cover, the 52nd, reversing light, the 53rd, headlight, the 54th, front shroud, the 55th, the front fender apron of covering front-wheel, the 56th, be installed in the air purifier of being responsible on 13 with top installation portion 57, the 58th, from being arranged on from air purifier 56 to driving engine the carburettor on 37 the intake channel, the 59th, in order to constitute the change-speed box that power unit 26 is arranged on the rear portion of

driving engine

37,61,61 (labels 61 of not shown inboard) are with first installation portion 62 of being located at power unit 26 sides the suspension strut of the centre that is arranged on the person in charge 13 of power unit 26 usefulness to be installed, 62, the 63rd, power unit 26 is installed to second installation portion of being located at power unit 26 sides and the 3rd installation portion of using on the

pivot plate

15,64 upper brackets, 65 chain guards, the 66th, the anterior bottom of fuel tank 31 is installed to vehicle seat horizontal bar 14, fuel tank first installation portion of using on 14, the 71st, formation opens and closes the link pin of the switching axle of vehicle seat 32 usefulness, the 73rd, the filler cap of fuel tank 31, the 74th, carry out the regulating control that voltage control is used, 75,76 (labels 76 of not shown inboard) are the vehicle body covers, the 77th, and bicycle basket, HF are the height dimensions of fuel tank 31.

Fig. 2 is the lateral plan according to the main portion of the vehicle body frame of motor bike of the present invention, express among the figure, via connecting panel 81 with backstay 16, the bottom of 16 (backstays 16 of not shown inboard) is installed on the person in charge 13 the rear end, strengthening carriage 82 with first sets up on the vehicle seat horizontal bar 14 that is installed in the person in charge 13 and close side at one's side, first strengthens carriage 83 sets up on the vehicle seat horizontal bar 14 that is installed in the person in charge 13 and inboard, the second reinforcement carriage 84 (carriage 84 is strengthened in second of not shown inboard) sets up respectively and is installed on vehicle seat horizontal bar 14 and the backstay 16, equally, the 3rd reinforcement carriage 85 (the 3rd carriage 85 of not shown inboard) is installed on the connecting portion of vehicle seat horizontal bar 14 and backstay 16, about two the 3rd strengthen carriages 85, setting up the cross section between 85 is first crossbeam 86 of コ font, the nut 87 that rear portion that fuel tank 31 (with reference to Fig. 1) is installed is used is installed on this first crossbeam 86,87 (not shown one of them nut 87), in the cross section is the inboard of the pivot plate 15 of コ font, and the 4th reinforcement carriage 88 of strengthening pivot plate 15 usefulness own is installed.

Here, 91,92 (with reference to the labels 92 of Fig. 1) are to be arranged on the first power unit installation portion and the second power unit installation portion on the pivot plate 15 for power unit 26 (with reference to Fig. 1) is installed, the 93rd, the pivotal axis of swing arm 27 usefulness, the 94th, for front portion that battery container 44 (with reference to Fig. 1) is installed, be installed in first nut of strengthening on the

carriage

83,96, the 97th, for the rear portion that battery container 44 is installed is installed in rear portion upper bracket and rear lower carriage on the backstay 16 (inboard, the i.e. backstay on vehicle body right side).

Fig. 3 is the back view according to the main portion of motorcycle stature of the present invention, express among the figure, second crossbeam 105 is erected at vehicle seat horizontal bar 14, on 14 the upper rear end, the taillight top hold-down bolt 106 that top that taillight 35 (with reference to Fig. 1) is installed is used is set on this second crossbeam 105,106, at vehicle seat horizontal bar 14, on 14 the rear end lower, it is the back end bracket 107,107 of コ font that the cross section is installed, and this back end bracket is equipped with the bottom of taillight 35 and the rear portion of interior rear mudguard 33 (with reference to Fig. 1), at backstay 16, on 16 the side, rear portion upper bracket 96 and rear lower carriage 97 are installed, the hold-down bolt 108 that the front end of rear mudguard 33 is used in installing is installed on connecting panel 81, the lower end of

backstay

16,16 is installed on the back side of pivot plate 15.

Fig. 4 is the 4-4 line section-drawing of Fig. 2, expresses among the figure, and the person in charge 13 cross section is essentially rectangle, and the tapered portion 103,103 that is arranged on the top of pivot plate 15 is installed on each side of this person in charge 13.

Fig. 5 be Fig. 2 to view, express among the figure, be responsible on 13 by connecting panel 81 is installed to, the left and right end portions of this connecting panel 81 is respectively installed on the

backstay

16,16, will be responsible for 13 and backstay 16,16 couple together.

Fig. 6 be Fig. 2 to view, express among the figure, strengthen medial surface and the rear side that carriage 88 is installed to pivot plate 15 with the 4th, the 4th lower end of strengthening carriage 88 is installed on the pivotal axis 93.

Fig. 7 is the transparent view of explanation according to the fuel tank supporting structure of motor bike of the present invention, the figure shows, the 3rd crossbeam 201 is erected at left and right sides vehicle seat horizontal bar 14, on 14 the front portion, with the front portion of the 3rd crossbeam 201 via fuel tank carriage 202 supporting fuel tanks 31, first crossbeam 86 (with reference to Fig. 2) is erected at left and right sides vehicle seat horizontal bar 14 as previously described, on 14 the rear portion, with the rear portion of these first crossbeam, 86 supporting fuel tanks 31.In addition, 204 level sensors that are mounted on the fuel tank 31.

Fig. 8 is the transparent view of explanation according to the main portion of the vehicle seat supporting structure of motor bike of the present invention, the figure shows, but with seat hinge 207 freely openable ground vehicle seat 32 is installed on the front upper portion of fuel tank 31.

Seat hinge 207 is installed to the hinge plate 211 of fuel tank side on the backing plate 208 of the front upper portion that is arranged on fuel tank 31, seat side hinge plate 212 is installed on the base plate 163 of vehicle seat 32, these fuel tank side hinge plates 211 and seat side hinge plate 212 can be coupled together with freely swinging with link pin 71.

Here, 213 ... it is the bolt that is installed on the backing plate 208,214 ... be by being screwed into the nut of bolt 213 fixed fuel tank side hinge plates 211,215,215 (wherein have the label 215 of a side not shown) are the bolts that is installed on the base plate 163,216,216th, by being screwed into the fixedly nut of seat side hinge plate 212 of bolt 215,215.

Fig. 9 is the instruction diagram that is used to illustrate according to the supporting structure of the fuel tank of motor bike of the present invention and vehicle seat, represent among the figure, utilize vehicle seat

horizontal bar

14,14 via the rubber component 218 as elastic component, 218,221,221 (218 of not shown inboards, 221) the anterior bottom and the rear portion of supporting fuel tank 31 use fuel tank 31 via the rubber component 222 as buffer component ... the front portion of supporting saddle 32.In addition, rubber component 218 and rubber component 221 are same members, but for convenience of description, adopt different labels.

In more detail, with the fuel tank carriage 202 of fuel tank 31 via rubber component 218,218 (rubber components 218 of not shown inboard) are installed to and are installed on vehicle seat horizontal bar 14, on the 3rd crossbeam 201 on 14 the front portion, (in more detail with the rear portion of fuel tank 31, be the conduct rear portion 31a of the joint of the fuel tank 31 of the structure of two member engages up and down) via rubber component 221,221 are installed to and are installed on vehicle seat horizontal bar 14, on first crossbeam 86 at 14 rear portion, via rubber component 222 ... seat hinge 207 is installed on the backing plate 208 of fuel tank 31, vehicle seat 32 is installed on this seat hinge 207.

Figure 10 is the section-drawing of explanation according to the supporting structure of the anterior bottom of fuel tank of motor bike of the present invention, represent among the figure, below fuel tank carriage 202 on the 202a, install and form through hole 225, the reinforcement of 225 (through holes 225 of not shown inboard) backing plate 226, the top of rubber component 218 is coupled on the through hole 225, sleeve pipe 227 is led in the rubber component 218, packing ring 228 is placed on the upper surface 218a of rubber component 218, bolt 231 is fed in the sleeve pipe 227, on the other hand, nut 232 is installed on the 3rd crossbeam 201, by above-mentioned bolt 231 is screwed on this nut 232, fuel tank carriage 202 is installed on the vehicle seat horizontal bar 14.

The through hole 225 of backing plate 226, with edge part upward bending forming, be easy to rubber component 218 is inserted from the below, and, strengthen the area of contact of rubber component 218 and backing plate 226, be not easy to injure rubber component 218.

Rubber component 218 is made of with the flange 236 that is located at a portion 235 tops tube portion 235, tube portion 235 comprises the sleeve pipe patchhole 237 that inserts sleeve pipe 227 usefulness, be located at the large diameter hole portion 238 on this sleeve pipe patchhole 237, for a short time be arranged to the annular incision portion 241 of ring-type in order to reduce elastic constant, 242, flange part 236 is to make the major diameter part bigger than the diameter of through hole 225 on the backing plate 226 in order to hang over.

The 3rd crossbeam 201, it is member to fuel tank carriage 202 lateral buckling shaping block pieces 244, described block piece 244 is used for affacting fuel tank carriage 202 when external force under fuel tank 31 (with reference to Fig. 9) side direction, when fuel tank carriage 202 descends, prevent that this fuel tank carriage 202 from descending above certain value C1.

Figure 11 is the section-drawing of the 11-11 line of Fig. 9, and expression is installed to fuel tank carriage 202 on the 3rd crossbeam 201 with two rubber components 218,218.

Backing plate 226 is the members that bear two rubber components 218,218, by this backing plate 226, even on the big load effect fuel tank carriage 202, also can suppress the distortion of fuel tank carriage 202.

Figure 12 is the section-drawing of explanation according to the fuel tank rear support structure of motor bike of the present invention, represent among the figure, the end is bent upward the reinforcement backing plate 247 that is shaped and forms through hole 225, be installed on the rear portion 31a at junction surface of fuel tank 31, the top of rubber component 221 is coupled in the through hole 225, sleeve pipe 227 is fed in the rubber component 221, packing ring 228 is placed on the upper surface 221a of rubber component 221, bolt 231 is fed in the sleeve pipe 227, on the other hand, be installed in the nut 87 on first crossbeam 86 by above-mentioned bolt 231 being screwed to (screw thread in conjunction with), the rear portion 31a at the junction surface of fuel tank 31 is installed on first crossbeam 86.In addition, the structure of rubber component 211, identical with the structure of rubber component 218 shown in Figure 10, in each one of rubber component 21, give the label (but upper surface 221a except) identical with rubber component 218.

Figure 13 is the section-drawing of the 13-13 line of Fig. 9, backing plate 247 is to first crossbeam, 86 lateral buckling shaping block pieces 251,251 member, described block piece 251,251 when external force affacts the rear portion 31a decline at junction surface on the fuel tank 31 downwards, prevents that this rear portion, junction surface 31a from descending above certain value C2.

The 3rd strengthens carriage 85, is made of interior carriage 252 and external support 253, installs on interior carriage 252 in the end of first crossbeam 86, and nut 254 is installed, and offers bolt-through hole 255 respectively on interior carriage 252 and external support 253.

Figure 14 is the section-drawing of explanation according to the supporting structure of the vehicle seat front portion of motor bike of the present invention, represent among the figure, washer-shaped sheet rubber 258 ... be embedded into the bolt 213 on the backing plate 208 that is installed in fuel tank 31 ... on, be located at the mounting hole 261 on the fuel tank side hinge plate 211 ... be embedded into bolt 213 respectively ... on, and fuel tank side hinge plate 211 is placed sheet rubber 258 ... upper surface on, and then with sheet rubber 258 ... be embedded into bolt 213 ... on, via packing ring 262 nut 214 screw threads are screwed into each bolt 213.Above-mentioned two sheet rubbers 258,258 constitute aforementioned rubber component 222.

In addition, in the drawings, with top described the same, expression is installed to the base plate 163 of vehicle seat 32 on the seat side hinge plate 212 of seat hinge 207 via rubber component 222.

The effect of rubber component 218,221 recited above is described with Figure 15 and Figure 16 below.

Figure 15 (a) (b) is first action diagram of explanation according to the effect of rubber component of the present invention.

In (a), for example, when acting on excessive load from vehicle seat downwards on fuel tank, this load passes to fuel tank carriage 202, and then, as shown by arrows, pass to rubber component 218.The result is, rubber component 218 is shown in (b), by shrinking the above-mentioned load of supporting, when amount of contraction reaches certain value C1 (with reference to Figure 10), the lower surface 202a of fuel tank carriage 202 contacts with the block piece 244 of the 3rd crossbeam 201, and fuel tank carriage 202 can not descend above certain value C1.

Figure 16 (a) (b) is second action diagram of explanation according to the effect of rubber component of the present invention.

In (a), when when vehicle seat affacts excessive load on the fuel tank downwards, this load passes to rubber component 221 as shown by arrows from rear portion, the junction surface 31a of fuel tank.As a result, rubber component 221 is shown in (b), and by shrinking the above-mentioned load of supporting, when amount of contraction became C2 (with reference to Figure 13), the block piece 251 of backing plate 247 contacted with first crossbeam 86, and the rear portion 31a at junction surface can not descend above certain value C2.

Figure 17 is the section-drawing of explanation according to another form of implementation of the anterior lower support structure of fuel tank of the present invention, represent among the figure, tabular crossbeam 265 is erected at vehicle seat horizontal bar 14, between 14 (the vehicle seat horizontal bars 14 of a not shown side), on fuel tank carriage 202, prevent that to the shaping of crossbeam 265 lateral bucklings fuel tank carriage 202 from descending above the block piece 266 of certain value C3.Other structure is with shown in Figure 10 the same.

Figure 18 be explanation according to another form of implementation of the supporting structure at the rear portion of fuel tank of the present invention section-drawing, express, backing plate 271 is installed to the bottom of rear portion, the junction surface 31a of fuel tank, and being shaped to backing plate 271 lateral bucklings on first crossbeam 86 prevents that rear portion, junction surface 31a from descending and surpasses the block piece 272 of certain value C4.Other structure is with shown in Figure 13 identical.

As scheme above-mentioned Fig. 1, it is such that Figure 10 and Figure 13 illustrate, first, the present invention, vehicle seat 32 is being arranged on body tail, fuel tank 31 is configured in the motor bike 10 of below of this vehicle seat 32, it is characterized by, be bearing on the vehicle body frame 11 via the front and back of rubber component 218,221 with fuel tank 31, be bearing in more detail on the vehicle seat horizontal bar 14, and wherein a side direction opposite side forms highlightedly and prevents that these rubber components 218,221 from compressing respectively and surpass certain value C1 from vehicle body frame 11 sides and fuel tank 31 sides, the block piece 244,251 of C2.

Prevent rubber component 218 by setting, 221 compressions surpass certain value C1, the block piece 244 of C2,251, even for a long time load is affacted on the rubber component 218,221 because of As time goes on producing the permanent deformation of compression via fuel tank 31 from vehicle seat 32, rubber component 218,221 size reduces, and also can limit fuel tank 31 and surpass certain value C1, the displacement of C2.

Thereby, there is no need can make the vehicle body miniaturization in order to prevent fuel tank and to be configured in the interference between the parts around the fuel tank 31 and big clearance is set, and, the height dimension of vehicle seat 32 and fuel tank 31 can be do not reduced, the cushion characteristic of vehicle seat 32 and the capacity of fuel tank 31 can be kept.

In addition, owing to rubber component 218,221 can not compress above certain value C1, C2, so, in rubber component 218,221 excessive stress can not take place, can dwindle the compression permanent deformation that is taken place.And then, because rubber component 218,221 excessive distortion can not take place, can prevent that rubber component 218,221 from be full of cracks and damaged etc. taking place.

And then, because elastic support fuel tank 31, so, can prevent to give fuel tank 31 with the transfer of vibration of driving engine 37, the fuel that can suppress in the fuel tank 31 bubbles.

The second, as Fig. 1 and shown in Figure 14, of the present invention being characterized as, but the link pin 207 of freely openable ground supporting saddle 32 is installed to the top of fuel tank 31 via rubber component 222.

Like this, by with vehicle seat 32 elastic supports on fuel tank 31, elastic support ground joins fuel tank 31 on the vehicle body frame 11 to, can prevent further that the transfer of vibration of driving engine from giving passenger.

In addition, in this form of implementation, in Figure 17, on fuel tank carriage 202, form block piece 266, but also can on backing plate 226, be bent into the form drag block piece to crossbeam 265.

[effect of invention]

The present invention brings into play following effect by said structure.

Scheme 1 described bike tank supporting structure since via elastic component with fuel oil The front and back of case are bearing on the vehicle body frame, and, one of from vehicle body frame and fuel tank to wherein Another forms highlightedly and prevents that these elastic component compressions from surpassing the block piece of certain value, institute With, even for a long time load is applied on the rubber component from the fuel tank side, because of along with the time Pass the permanent deformation that produces compression, the size reduction of rubber component also can limit fuel oil Case surpasses the displacement of certain value.

Thereby, need not in order to prevent fuel tank and to be configured in doing between the fuel tank parts on every side Disturb and big clearance is set, can make the vehicle body miniaturization, and, can reduce vehicle seat and give The height dimension of fuel tank can keep the shock-absorbing capacity of vehicle seat and the capacity of fuel tank.

The supporting structure of scheme 2 described bike tanks is because can be certainly via bolster Be installed to the top of fuel tank by the seat hinge that opens and closes the ground supporting saddle, so, by cutting with scissors The chain elastic bearing joins the fuel tank elastic bearing on the vehicle body frame on fuel tank, can advance One step prevented from the vibration of engine is passed to passenger.

Claims

1. the supporting structure of a bike tank, vehicle seat is being arranged on body tail, fuel tank is configured in the motor bike of below of vehicle seat, it is characterized by, the anteroposterior diameter of fuel tank is bearing on the vehicle body frame by elastic component, and, form the block piece that the contraction that prevents these elastic components surpasses certain value highlightedly to another one of from vehicle body frame and fuel tank.

2. the fuel tank supporting structure of motor bike as claimed in claim 1 is characterized by, but is installed to the top of aforementioned fuel tank via the seat hinge that damper element freely openable twelve Earthly Branches brought forward is stated vehicle seat.