CN1557670A

CN1557670A - Chain case structure of motorcycle

Info

Publication number: CN1557670A
Application number: CNA2003101247658A
Authority: CN
Inventors: 大坪守; 也; 栗田和也; 一; 中林俊一
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2003-01-08
Filing date: 2003-12-25
Publication date: 2004-12-29
Anticipated expiration: 2023-12-25
Also published as: TWI239308B; JP2004210226A; AR042699A1; BRPI0400057B1; PE20040737A1; TW200416166A; KR20040063829A; MXPA04000146A; CN100333959C; BRPI0400057A

Abstract

The gear case structure of motorcycle adopts covering the chain entirely of the chain case structure for the motorcycle, and installing the top and bottom of the of the gear case structure on a swing arm, so as to render a light impression. The case rear end connected section 70 of the top and bottom of the gear structure 54 and 55 is offset from the axis of axle 15 and extends further upper than the arm centerline C along a longitudinal direction of swing arm 14a which extends to the longitudinal direction of swing arm 14a.

Description

Two-wheeled chain case structure

Technical field

The present invention relates to a kind of two-wheeled chain case structure, is in the swing arm by the axletree of rearward end supporting wheels, is equipped with from the top of this swing arm of clamping up and down and lower case and make top and the rearward end of lower case interconnects.

Background technology

For example, the two-wheeled chain case structure of using that has disclosed in following patent documentation 1 grade is equipped with in swing arm from up and down it being carried out the top and the lower case of clamping.

[patent documentation 1]

Te Kaiping 9-263278 communique

But, though above-mentioned chain case structure in the past, adopted the structure of so-called whole chain case, in this chain case, be passed to the chain of trailing wheel for integral body covers the rotary power that is used for being produced by engine installation, and top and lower case are installed in the swing arm, still, the rear end connecting portion of upper body and lower case, be set at by trailing wheel axle axis and along on the extension line of the arm line of centers of swing arm longitudinal extension.That is, the rearward end of upper body, with below walk around the swing arm rearward end mode form, therefore, lack brisk sense.

The present invention In view of the foregoing, its purpose is to adopt and wholely covers chain and top and lower case are installed in the two-wheeled chain case structure of using in the swing arm, thereby can improve brisk sense.

Summary of the invention

To achieve these goals, the present invention's 1 described two-wheeled chain case structure, be in swing arm by the axletree of rearward end supporting wheels, be equipped with from the top and the lower case of this swing arm of clamping up and down, and the rearward end of top and lower case is interconnected, it is characterized in that: the rear end connecting portion of described top and lower case, be offset to by described axletree axis and along the top of the arm line of centers of swing arm longitudinal extension.

Adopt the present invention's 1 described invention structure, because the rear end connecting portion of top and lower case is set at the top of arm line of centers, therefore, when observing whole chain case from the side, the rear portion of chain case presents to back upper place bevelled outward appearance, thereby can obtain to improve the outward appearance of brisk sense.

In addition, the present invention's 2 invention is on the basis of the structure of the 1 described invention of the invention described above, it is characterized in that, the front end of the rearward end of described top and lower case is set at the place ahead of swing arm rear end, adopts this structure, the rearward end that the rear end of lower case is walked around swing arm up forms, thereby can further improve brisk sense, simultaneously, when upper body is installed in swing arm, with the rearward end of lower case as guiding part, so that improve assembling.

In addition, the present invention's 3 invention is on the basis of the structure of the present invention's 1 or 2 described inventions, it is characterized in that the mutual light and shade of described top and lower case differs greatly, so that distinguish with color, adopt this structure, can obtain further to improve the outward appearance of brisk sense.

Description of drawings

Fig. 1 is two-wheeled lateral plan;

Fig. 2 is the amplification view of chain case;

Fig. 3 is the amplification view of 3-3 line among Fig. 2;

Fig. 4 is the amplification view of 4-4 line among Fig. 2.

Among the figure: 14a-swing arm, 15-axletree, 54-upper body, 55-lower case, 70-rear end connecting portion, C-arm line of centers, WR-trailing wheel.

The specific embodiment

Below, the example of the present invention shown in illustrates embodiments of the invention with reference to the accompanying drawings.

Fig. 1～4 have shown one embodiment of the invention, and Fig. 1 is two-wheeled lateral plan, and Fig. 2 is the enlarged side view of chain case, and Fig. 3 is the amplification view of 3-3 line among Fig. 2, and Fig. 4 is the amplification view of 4-4 line among Fig. 2.

At first in Fig. 1, described two-wheeled vehicle frame 5 is provided with the front pipe 6 that operably supports front fork 9, with the body frame 7 that extends to the back lower place from this front pipe 6, the pair of right and left after-frame 8 that links to each other and extend with rear portion to the back upper place with body frame 7 ... lower end at described front fork 9, supporting front-wheel WF with axle, be connected with shaft-like directed handlebar 10 on the top of front fork 9, the front fender apron 11 above front fork 9 upper supports have covering front-wheel WF.

On the pars intermedia two sides of body frame 7, be fixed with boatswain chair 12 respectively ..., on the two sides, rear portion of body frame 7, be fixed with pivot plate 13.Below body frame 7, be provided with the driving engine E that for example cylinder axis is provided with to the front upper place slightly, this driving engine E is by above-mentioned boatswain chair 12 and 13 supportings of described pivot plate, to be suspended on the vehicle frame 5.

On described pivot plate 13, can support the leading section of back vent 14 with swinging up and down, be supported with the axletree 15 of trailing wheel WR in the rearward end of back vent 14.In addition, the after-frame on vehicle frame 58 ... and between the back vent 14, be provided with posterior bumper 16.

Above trailing wheel WR, at after-frame 8 ... on, being supported with Fuel Tank 17 and the storage tank 18 that is arranged on these Fuel Tank 17 the place aheads, the top of Fuel Tank 17 and above-mentioned Fuel Tank 17 can be taken with seat 19 coverings by for example two people's lap sidings with opening and closing.

On vehicle frame 5, be equipped with and cover this vehicle frame 5, the part of above-mentioned driving engine E, the car body lid 20 that the synthetic resin of Fuel Tank 17 and storage tank 18 etc. is made, this car body lid 20 is by the anterior side cover 21 that is arranged on body frame 7 left and right sides ... with cover from the place ahead driver's shank and with two anterior side covers 21 ... the front portion shank baffle plate 22 that links to each other and to form ... with cover from the place ahead front pipe 6 and with two shank baffle plates 22 ... the preceding top cover 23 that links to each other, with cover the front pipe from the rear, 6 cover from the top simultaneously body frame 7 and the body frame top cover 24 that links to each other with preceding top cover 23 and with above-mentioned two anterior side covers 21 ... the lower cover 25 that links to each other of bottom ... and the rear portion side cover 26 that covers Fuel Tank 17 and storage tank 18 from both sides constitutes.

Above-mentioned taking with seat 19, can realize storage and the taking-up and towards the fuel feeding of Fuel Tank 17 of article in storage tank 18, and can be installed in the top of rear portion side cover 26 with opening and closing, make the setting that links to each other with rear portion side cover 26 of the rear mudguard 27 of the top, rear portion that covers trailing wheel WR.

Above-mentioned driving engine E constitutes engine installation P with change-speed box M, by chain 28 output of change-speed box M is passed to trailing wheel WR.That is, non junction chain 28 is rolled up on drive sprocket 30 that hangs on the output shaft 29 that is fixed in change-speed box M and the driven sprocket 31 that is installed on the trailing wheel WR.

Referring to Fig. 2 and Fig. 3, back vent 14 is that the tubular of rectangle forms with the cross-sectional plane, and is provided with a pair of swing arm 14a that is arranged on the trailing wheel WR left and right sides ..., the leading section of back vent 14 by horizontal pivot shaft 32, can be bearing on the pivot plate 13 of vehicle frame 5 with swinging up and down.

The wheel hub 33 of trailing wheel WR is bearing on the axletree 15 by pair of right and left ball bearing of main shaft 34 free to rotately, between the inner ring of two ball bearing of main shafts 34, the cylindraceous inboard axle sleeve 35 around axletree 15 is installed.

By yielding rubber 37 chain pulley seat 36 is connected the left part of wheel hub 33, above-mentioned driven sprocket 31 is by a plurality of bolts 38 ... and nut 39 ... be fastened on the above-mentioned chain pulley seat 36.In addition, chain pulley seat 36 is bearing on the outside cylindraceous axle sleeve 40 free to rotately the inner of above-mentioned outside axle sleeve 40 and above-mentioned two ball bearing of main shafts 34 by ball bearing of main shaft 41 ... the inner ring outer end butt joint of the ball bearing of main shaft 34 in middle left side and encirclement axletree 15.

On the swing arm 14a in left side, with the interior side external surface of above-mentioned chain pulley seat 36 cooresponding parts on, be welded with rear portion adapter plate 42, this rear portion adapter plate 42 has housing installation portion 42a, the 42b that stretches out up and down from this swing arm 14a, between the inner ring outer end of this rear portion adapter plate 42 and above-mentioned ball bearing of main shaft 41, cylindric lining 44 around above-mentioned outside axle sleeve 40 is installed,, between chain pulley seat 36 and lining 44, annular seal 45 is installed in the outside of above-mentioned ball bearing of main shaft 41.Therefore, be certain interval between the left part of the wheel hub 33 of regulation trailing wheel WR and the swing arm 14a in left side, can stop dust and water etc. to invade described wheel hub 33 from the left side.

On the other hand, also can stipulate to be certain interval between the swing arm on right side and above-mentioned wheel hub 33 right parts, also can stop dust and water etc. to invade above-mentioned wheel hub 33 from the right side.

On the left and right sides and above-mentioned rear portion adapter plate 43 of the swing arm 14a in left side rearward end, be respectively equipped with long slotted

hole

46,46,47 along fore-and-aft direction, the left and right sides in the swing arm rearward end on right side also is respectively equipped with and above-mentioned slotted hole 46 ... identical slotted hole (not shown).The left part of axletree 15 and the outside axle sleeve 40 that surrounds axletree 15 left parts ... can pass the swing arm 14a in left side and the

slotted hole

46,46,47 of above-mentioned rear portion adapter plate 43 movably along fore-and-aft direction, the swing arm that the outside axle sleeve of the right part of axletree 15 and encirclement axletree 15 right parts can pass the right side movably along fore-and-aft direction.

And, by screw thread make nut 48 respectively with from two swing arm 14a ... rearward end stretch out the above the outside axle sleeve 40 ... protrusion engage, by clamping packing ring 49 between the rearward end lateral surface of two swing arm 14a with fastening described nut 48 ... thereby along fore-and-aft direction, that is swing arm 14a ... length direction determine the position of axletree 15.

On the other hand, left part at axletree 15, be formed with the enlarged head 15a that docks, cooperates with axle sleeve 40 outer ends, the outside, left side, though illustrate in the drawings, but make with the outer end of the outside wheel rim on right side by screw thread dock, nut engaged engages with the right part of axletree 15, by fastening this nut, axletree 15 can be bearing in two swing arm 14a ... rearward end between.

And, at two swing arm 14a ... in, at above-mentioned outside axle sleeve 40 ... on, being fixed with can be at swing arm 14a ... the interior slide block 50 that slides ... front end and this slide block 50 ... the bolt 51 that links to each other ... rearward end, connect each swing arm 14a vertically movably ... aft bulkhead, a pair of nut 52,53 by screw thread respectively with from swing arm 14a ... the protrusion of the bolt 51 that stretches out of aft bulkhead engage.And loosening nut 48 ... state under, by loosening above-mentioned nut 52,53, the fore-and-aft direction position that can regulate axletree 15 is to regulate the tension force of chain 28.

Referring to Fig. 4, on the left side swing arm 14a on the back vent 14, be provided with simultaneously from the upper and

lower housing

54,55 of clamping this swing arm 14a up and down.

Upper body 54, surface plate 56 and backplate 57 that joint is formed by the punching press sheet steel, and to have the roughly U word shape cross-sectional structure that opens wide downwards, lower case 55, surface plate 58 and backplate 59 that joint is formed by the punching press sheet steel, and have upward the cross-sectional structure of the roughly U word shape that opens wide.

For top and

lower case

54,55 are installed, with above-mentioned chain pulley seat 36 cooresponding parts, above-mentioned rear portion adapter plate 42 is welded on the inboard outside of swing arm 14a, simultaneously, the anterior adapter plate 43 that will have the housing installation portion 43a, the 43b that stretch out up and down from this swing arm 14a is welded on the inboard outside near the part of swing arm 14a front end.

On housing installation portion 42a, the 42b of rear portion adapter plate 42, be fixed with the

nut

61,62 that is welded, the bolt 63 that will pass the back side lower part of the surface plate 56 on the upper body 54 by screw thread engages, is fastened on the above-mentioned nut 61 that is welded, the back side lower part of above-mentioned thus surface plate 56 is from outer side covers housing installation portion 42a and be assembled on this housing installation portion 42a.In addition, the bolt 64 that will pass the back upper lateral part of the surface plate 58 in the lower case 55 by screw thread engages, is fastened on the above-mentioned nut 62 that is welded and cooperates, the back upper lateral part of above-mentioned thus surface plate 58 is from outer side covers housing installation portion 42b and be assembled on this housing installation portion 42b.

In addition, the bolt 65 that will run through the preceding side lower part of upper body 54 upper surface panel 56 by screw thread engages, is fastened on the nut that is welded (not shown) on the housing installation portion 43a that is fixed in anterior adapter plate 43, thereby the preceding side lower part of above-mentioned surface plate 56 is from outer side covers housing installation portion 43a and be installed on this housing installation portion 43a.And then, the bolt 66 that will run through the preceding upper lateral part of the surface plate 58 on the lower case 55 by screw thread engages, is fastened on the nut that is welded (not shown) on the housing installation portion 43b that is fixed in anterior adapter plate 43, thereby the preceding upper lateral part of above-mentioned surface plate 58 is from outer side covers housing installation portion 43b and be installed on the installation portion 43b of this housing.

In the place ahead of above-mentioned rear portion adapter plate 42, the support 67 of the roughly U word shape that opens wide upward is welded on above the rear portion of above-mentioned swing arm 14a, in the inboard of this support 67, be fixed with the nut 68 that is welded.And, the bottom of in support 67, inserting posterior bumper 16, and connect by the bolt 69 that screw thread will pass support 67 and posterior bumper 16 bottoms and to be fastened on the described nut 68 that is welded, be connected to the rear portion of swing arm 14a with this lower end with posterior bumper 16.

; for example make the rearward end of the surface plate 58 on the lower case 54 and the interior side superimposed of the surface plate 56 on the upper body 54; simultaneously; make the rearward end of the backplate 59 on the lower case 54 and the interior side superimposed of the backplate 57 on the upper body 54; the rearward end of top and

lower case

54,55 is interconnected; the rear end connecting portion 70 of top and

lower case

54,55 is offset to the axis of the axletree 15 by trailing wheel WR and along the top of the arm line of centers C of swing arm 14a longitudinal extension.

And the front end of the rear end connecting portion 70 of top and

lower case

54,55 is set at the place ahead of swing arm 14a rear end, and above-mentioned rear end connecting portion 70 is provided with in the mode that rearward raises.

By japanning or plating etc. top and

lower case

54,55 are carried out paintedly, the light and shade difference that strengthens top and

lower case

54,55 is so that use color differentiating, and in the present embodiment, the color of upper body 54 is brighter so that use color differentiating than lower case 55.For example with silver color to upper body 54 when painted, painted with black etc. to lower case 55.In addition, make the color of swing arm 14a also bright, for example carry out painted to it with silver color than lower case 55.

In addition, in Fig. 1 and Fig. 2, lower case 55 has been implemented a little to describe to handle for dark-coloured in order to show lower case 55, but this does not represent will depict such point in lower case 55 in practice.

Below, effect to this embodiment describes, owing to be installed in that swing arm 14a on the back vent 14 goes up and from top and the lower case 54 of this swing arm of clamping 14a up and down, 55 rear end connecting portion 70, be offset to the axis of the axletree 15 by trailing wheel WR and along the top of the arm line of centers C of swing arm 14a longitudinal extension, therefore, observing by top and lower case 54 by the side, 55 constitute whole chain case the time, the rear portion of chain case presents to back upper place bevelled outward appearance, thereby the outward appearance that is obtained can improve brisk sense and the cooresponding degree of so-called half chain case.

In addition, because the front end of the rear end connecting portion 70 of top and

lower case

54,55, be set at the place ahead of swing arm 14a rear end, therefore, the rear end of lower case 55 forms in the mode of the rearward end of walking around swing arm 14a up, thereby can further improve brisk sense.

In addition, when upper body 54 is mounted to swing arm 14a, with the rearward end of lower case 55 as guiding part, so that can improve installation.And, owing to make the rearward end of the surface plate 58 on the lower case 54 and the interior side superimposed of the surface plate 56 on the upper body 54, simultaneously, make the rearward end of the backplate 59 on the lower case 54 and the interior side superimposed of the backplate 57 on the upper body 54, connect top and lower case 54 with this, 55 rearward end, therefore, after lower case 55 is mounted to swing arm 14a, overlap with the rearward end of lower case 55 by the rearward end that makes upper body 54, and upper body 54 can be remained on the lower case 55, so that realize the installation of upper body 54 easily, thereby can further improve the installation of upper body 54 to swing arm 14a to swing arm 14a.

And, with differing greatly of top and

lower case

54,55 mutual light and shades so that be the present invention of feature with color differentiating, color by making upper body 54 sides for example strengthens mutual light and shade difference than lower case 55 bright, use color differentiating, thereby can obtain further to improve the outward appearance of brisk sense.

More than, though embodiments of the invention are illustrated,, the present invention is not limited in the foregoing description, only otherwise break away from institute of the present invention record scope, can carry out various design improvement.

For example in the above-described embodiments, though top and lower case the 54, the 55th make by sheet steel,, also can make top and lower case respectively by synthetic resin.In this case, on top and lower case when painted, be not limited to japanning, can or use colorant, or implement wrinkling processing, can realize the new performance in top and lower case surface thus in the mode of economy.

In addition, the color that makes upper body 54 is more bright than lower case 55, can realize the light and shade contrast.

(invention effect)

As mentioned above, adopt the present invention's 1 described invention, when observing whole chain case from the side, the rear portion of chain case presents to back upper place bevelled outward appearance, thereby can obtain to improve the outward appearance of brisk sense.

Adopt the present invention's 2 described inventions, when further improving brisk sense,, the rearward end of lower case as guiding part, is improved assembleability with this when upper body is installed in swing arm.

Adopt the present invention's 3 described inventions, can obtain further to improve the outward appearance of brisk sense.

Claims

1. two-wheeled chain case structure, be in swing arm (14a) by the axletree (15) of rearward end supporting wheels (WR), installation is from the top and the lower case (54,55) of this swing arm of clamping (14a) up and down, and the rearward end of top and lower case (54,55) is interconnected, it is characterized in that:

The rear end connecting portion (70) of described top and lower case (54,55), be offset to by described axletree (15) axis and along the top of the arm line of centers (C) of swing arm (14a) longitudinal extension.

2. two-wheeled chain case structure according to claim 1 is characterized in that: the front end of the rear end connecting portion (70) of described top and lower case (54,55) is set at the place ahead of swing arm (14a) rear end.

3. two-wheeled chain case structure according to claim 1 and 2 is characterized in that: described top and lower case (54,55), mutual light and shade differs greatly, so that distinguish with color.