CN1096984C

CN1096984C - Motor driven two wheeled vehicle

Info

Publication number: CN1096984C
Application number: CN99110404A
Authority: CN
Inventors: 杉冈浩一
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 1998-07-09
Filing date: 1999-07-07
Publication date: 2002-12-25
Anticipated expiration: 2019-07-07
Also published as: IT1308776B1; JP2000025670A; CN1244479A; ITTO990567A1; TW586505U

Abstract

The present invention relates to a motor driven two wheeled vehicle to supporting a transmission case on a frame wherein the a transmission case comprises engine and a transmission mechanism for transmitting the motive power of the engine to the rear wheel. The transmission case storing a transmission mechanism is connected to the engine main body and is connected to a housing covering the transmission case. The air cleaner case of the air cleaner is composed of a case main body formed connecting integrally with the cover and a case cover tightened to the case main body.

Description

Two-wheeled

Technical field

The present invention relates to unit power plant is supported on the two-wheeled of vehicle frame swingably, this unit power plant constitutes by driving engine with the transmission of power of this driving engine transmission device to trailing wheel.

Background technology

This of prior art be two-wheeled for example have been opened flat 7-187050 number and spy by the Japanese patent gazette spy and has opened flat 7-247854 number etc. disclosed.

Above-mentioned Japanese patent gazette spy open flat 7-187050 number disclosed two-wheeled in, airfilter is configured in the unit power plant top, owing to will avoid and accommodate the transmission gearbox interference of transmission device and the stay of configuration support air fil etc., so be difficult to guarantee big air cleaner capacity.

On the other hand, above-mentioned Japanese patent gazette spy open flat 7-247854 number disclosed two-wheeled in, transmission gearbox is made of transmission gearbox body and the transmission-case cover that is connected in this transmission gearbox body, the case body and the above-mentioned transmission-case cover that constitute airfilter with case lid are configured as one, can obtain big air cleaner capacity.And, since when the case body be metal weight increase when making, so transmission-case cover is divided into the part that metal partial sum synthetic resin is made, the case body of the integrally formed airfilter of in transmission-case cover, making of part by synthetic resin.Therefore, in the occasion that a transmission gearbox part is formed by synthetic resin, can not guarantee to have enough intensity as transmission gearbox.

Summary of the invention

The present invention makes in view of above situation, and it is a kind of two-wheeled that its purpose is to provide, and can guarantee the capacity of airfilter under the prerequisite of guaranteeing transmission gearbox intensity, and can suppress the noise that transmission device produces.

In order to achieve the above object, the invention provides a kind of two-wheeled, unit power plant is supported on vehicle frame swingably, this unit power plant constitutes by driving engine with the transmission of power of this driving engine transmission device to trailing wheel, it is characterized in that: transmission gearbox is accommodated above-mentioned transmission device and is linked to each other with engine body, on this transmission gearbox, connect an outer cover, described outer cover covers this transmission gearbox, the described two-wheeled air filter case that also is provided with airfilter, described air filter case comprise the case body that fuses with above-mentioned outer cover and are connected in the case lid of this case body.

According to such formation, by covering transmission gearbox by outer cover, the start sound that can be produced by the transmission device in the above-mentioned outer cover inhibition transmission gearbox spreads out of the outside, obtains good soundproof effect.And, owing to connect the case body that constitutes air filter case with case lid on the outer cover of transmission gearbox integratedly being connected in, so, do not need to make the part of transmission gearbox with synthetic resin, can guarantee the intensity of transmission gearbox, there is no need to consider with the interference of transmission gearbox simultaneously and be used for the configuration of the stay etc. of support air fil, can guarantee the capacity of big airfilter.

Preferably, the transmission gearbox of described driving engine comprises a case portion, one the 1st box part and one the 2nd box part, described case portion extends to trailing wheel one side, described the 1st case member is connected to described case portion in the opposite side of described trailing wheel, described the 2nd case member is connected to described case portion in above-mentioned trailing wheel one side, between the axletree of crank shaft of described driving engine and above-mentioned trailing wheel, on the lateral surface of described the 1st case member, be provided with recess, be provided with from the extended expansion section of the principal part of described case body on the case body of described airfilter, described expansion section is accommodated in the recess of described the 1st case member.

Description of drawings

Accompanying drawing is simply described as follows:

Fig. 1 is the lateral plan of small motorcycle type motorbicycle.

Fig. 2 is the 2-2 line amplification view of Fig. 1.

Fig. 3 is the decomposition diagram of transmission gearbox and airfilter.

Fig. 4 is the 4-4 line amplification view of Fig. 1.

Fig. 5 is the 5-5 line amplification view of Fig. 1.

The specific embodiment

Below with reference to the accompanying drawings shown in one embodiment of the invention form of implementation of the present invention is described.

Fig. 1-Fig. 5 illustrates one embodiment of the invention, Fig. 1 is the lateral plan of small motorcycle type motorbicycle, and Fig. 2 is the 2-2 line amplification view of Fig. 1, and Fig. 3 is the decomposition diagram of transmission gearbox and airfilter, Fig. 4 is the 4-4 line amplification view of Fig. 1, and Fig. 5 is the 5-5 line amplification view of Fig. 1.

At first, in Fig. 1, the vehicle frame F of small motorcycle type motorbicycle V has preceding pipe 12, lower extending tube 13, reaches back vehicle frame 14.Should before pipe 12 can support the front fork 11 that is used to hang front-wheel WF with turning to, this lower extending tube 13 from this before pipe 12 extend downwards, this back vehicle frame 14 is connected with in the also extension rearward of the bottom of this lower extending tube 13.This back vehicle frame 14 has a pair of front frame 14a of portion ..., a pair of in the middle of the vehicle frame 14b of portion ... and the 14c of rear portion vehicle frame portion, under overlooking, be ellipticity substantially.This a pair of front frame 14a of portion ... be connected in the lower end of lower extending tube 13 and on even keel extension substantially rearward with its leading section, the vehicle frame 14b of portion in the middle of this is a pair of ... from the 14a of front frame portion ... the rear end extend to the back upper place, the 14c of this rear portion vehicle frame portion is with the vehicle frame 14b of portion in the middle of two ... the rear end interconnect.

Vehicle frame F is covered by vehicle body cover 16, and this vehicle body cover 16 has the base plate 16a of supporting driver person's sole, is provided with the vehicle seat 17 that chaufeur is taken advantage of a usefulness at the rear portion of this vehicle body cover 16.

Trailing wheel WR is supported on the rear portion of unit power plant P.This unit power plant P is supported on vehicle frame F swingably, constitutes by 2 stroke forced air-cooling h type engine h E with as the toric transmission M that the outputting power with this driving engine E is delivered to the transmission device of above-mentioned trailing wheel WR.The front portion of this unit power plant P is supported on the two middle vehicle frame 14b of portion of the back vehicle frame 14 of above-mentioned vehicle frame F by not shown connecting rod mechanism ... and can be around the axis parallel with trailing wheel WR rotation axis swing, at rear portion and 14 of the vehicle frames in above-mentioned back of unit power plant P posterior bumper 19 is set.

In Fig. 2, the engine body 20 of driving engine E is configured in the place ahead of this trailing wheel WR, and the axis of crank shaft 22 is parallel with the rotation axis of trailing wheel WR, and this crank shaft 22 is supported on the crankcase 21 as this engine body 20 parts.

Be integrally formed with the case portion 23 that extends to trailing wheel WR one side at crankcase 21, by with above-mentioned trailing wheel WR opposition side be connected to above-mentioned case portion 23 the 1st case member 24, above-mentioned trailing wheel WR side be connected to above-mentioned case portion 23 rear portions the 2nd case member 25, and above-mentioned case portion 23 constitute transmission gearbox 26, crank shaft 22 protrudes from crankcase 21, the axletree 27 of trailing wheel WR is bearing in the rear portion of transmission gearbox 26 pivotally, and the toric transmission M that is located between crank shaft 22 and the axletree 27 is housed in this transmission gearbox 26.

Toric transmission M has drive side drive pulley 28, driven shaft 29, slave end drive pulley 30, centrifugal clutch 31, ring-type cone belt 32, and reducing gear row 33, this drive side drive pulley 28 is connected in crank shaft 22, but this driven shaft 29 has the axis parallel with crank shaft 22 and free rotaring ground supporting in the rear portion of transmission gearbox 26, this slave end drive pulley 30 is a pair of with 28 one-tenth of above-mentioned drive side drive pulleys, this centrifugal clutch 31 is located between this slave end drive pulley 30 and the driven shaft 29, these ring-type cone belt 32 volumes hang over and drive and slave

end drive belt

28,30, these reducing gear row 33 are located between the axletree 27 and driven shaft 29 of above-mentioned trailing wheel WR.

Drive side drive pulley 28 is made of tight pulley halfbody 34 that is fixed in crank shaft 22 and the movable half-pulley 35 that can be installed on crank shaft 22 vertically slidably.Between fixing and movable half-

pulley

34,35, form triangle endless groove 36, in this endless groove 36, insert cone belt 32.In addition, at the back side of movable half-pulley 35 in the fixing swash plate 37 of crank shaft 22, at this swash plate 37 and movably accommodate a plurality of centrifugal rollers 38 with quick condition between the half-pulley 35.As rev up when crank shaft 22 turns round, the centrifugal roller 38 that is subjected to centrifugal action moves towards foreign side radially, movable half-pulley 35 is moved along the direction near tight pulley halfbody 34, can increase the contact radius of cone belt 32 thus in two half-

pulley

34,35.

Together as can be known with reference to Fig. 3-Fig. 5, and crank shaft 22 and axletree 27 between the cooresponding position of pars intermedia, ground, open two ends is set along the recess 40 that extends up and down in the lateral surface of the 1st transmission component 24 of transmission gearbox 26.

On the other hand, in the outside of the 1st case member 24 of transmission gearbox 26 by a plurality of

screw members

42,42 ... connect plastic outer cover 41, cover the part except above-mentioned recess 40 of the 1st case member 24 by this outer cover 41.

As shown in figures 1 and 3, at the top position of engine body 20 configuration carburettor 43, at the rear side configuration airfilter 44 of this carburettor 43.

The air filter case 45 of this airfilter 44 is made of case body 46 and case lid 47, and this air filter case 45 links to each other with above-mentioned outer cover 41 integratedly and formed by synthetic resin, and this case lid 47 is connected in this case body 46.

Case body 46 is integrally formed with case body principal part 46a, the 1st expansion section 46b, reaches the 2nd expansion section 46c, this principal part 46a will be connected in the top of outer cover 41 with open ground of trailing wheel WR opposition side one, the 1st expansion section 46b extends downwards and is connected in outer cover 41, the 2 expansion section 46c integratedly for the recess 40 of the 1st case member 24 that be contained in transmission gearbox 26 and from case body principal part 46a bottom and stretches out to the front side of trailing wheel WR from the front portion of case body principal part 46a.Case body principal part 46a and the 1st expansion section 46b are linked to be T word shape substantially, with trailing wheel WR opposition side opening, the 2nd expansion section 46c forms the tubular of closed front.

Case lid 47 forms T word shape for inaccessible case body 46 substantially with the peristome of trailing wheel WR opposition side, by a plurality of

screw line members

48,48 ... be connected to case body 46.

Inner peripheral surface at the case body principal part 46a of case body 46 inwardly is wholely set receiving portion 49 in the side projectedly, accept the circumference of filter medium 52 by above-mentioned receiving portion 49, this filter medium 52 will be divided into the not decontamination chamber 50 and the decontamination chamber 51 of case lid 47 sides in the air filter case 46.In case lid 47 one projectioies a plurality of

compressed part

53,53 are set ..., these a plurality of

compressed part

53,53 ... and receiving portion 49 between the circumference of the above-mentioned filter medium 52 of clamping.Therefore, make filter medium 52 circumferences contacts under the state of receiving portion 49, case lid 47 is connected in case body 46, thus between case body 46 and case lid 47 clamping filter medium 52.

Rear portion at case body principal part 46 a of case body 46 is provided for air is imported to the not air introducing port 54 of decontamination chamber 50 from the outside, and the air with decontamination chamber 51 of continuing in the front portion of the 2nd expansion section 46c of above-mentioned case body 46 imports to the conduit 55 in the carburettor 43.

The following describes the effect of this embodiment.The 1st case member 24 of transmission gearbox 26 that contains toric transmission M be owing to cover by the outer cover 41 that is connected in the 1st case member 24, spread out of the outside so can suppress the start sound that the toric transmission M in the transmission gearboxs 26 produce by outer cover 41.

In addition, though the air filter case 45 of airfilter 44 is made of body 46 and the case lid 47 that is connected to this case body 46, but because case body 46 is integrally formed with outer cover 41, so do not need to make the part of transmission gearbox 26 with synthetic resin, thereby can guarantee the intensity of transmission gearbox 26, and there is no need to consider with the interference of transmission gearbox 26 and be used for the configuration of the stay etc. of support air fil 44, can guarantee that the capacity of airfilter 44 is bigger.

And, in the 1st case member 24 of transmission gearbox 26, between the axletree 27 of crank shaft 22 and trailing wheel WR, be provided with recess 40, case body 46 at air filter case 45 is provided with the 1st expansion section 46b that is contained in the recess 40, so, can further increase the capacity of airfilter 44, in addition, owing to also be provided with the 2nd expansion section 46c that stretches out to trailing wheel WR front side at the case body 46 of air filter case 45, so, the capacity of airfilter 44 can further be increased.

Embodiments of the invention more than have been described in detail in detail, but have the invention is not restricted to the foregoing description, can make all design modifications not breaking away under the described condition of the present invention of claim.

As described above according to first scheme of the present invention, not only can suppress start sound that the transmission device in the transmission gearbox produces by outer cover spreads out of outside and obtains good soundproof effect, and do not need to make the part of transmission gearbox, thereby can under the prerequisite of guaranteeing transmission gearbox intensity, guarantee the capacity of big airfilter with synthetic resin.

In addition, according to alternative plan of the present invention, can further increase the capacity of airfilter.

Claims

One kind two-wheeled, unit power plant (P) is supported on vehicle frame (F) swingably, this unit power plant (P) constitutes by driving engine (E) with the transmission of power of this driving engine (E) transmission device (M) to trailing wheel (WR), it is characterized in that: transmission gearbox (26) is accommodated above-mentioned transmission device (M) and is linked to each other with engine body (20), go up a connection outer cover (41) at this transmission gearbox (26), described outer cover (41) covers this transmission gearbox (26), the described two-wheeled air filter case (45) that also is provided with airfilter (44), described air filter case (45) comprises case body (46) that fuses with above-mentioned outer cover (41) and the case lid (47) that is connected in this case body (46).
2. as claimed in claim 1 two-wheeled, it is characterized in that: the transmission gearbox (26) of described driving engine (E) comprises a case portion (23), one the 1st box part (24) and one the 2nd box part (25), described case portion (23) extends to trailing wheel (WR) side, described the 1st case member (24) is connected to described case portion (23) in an opposite side of described trailing wheel (WR), described the 2nd case member (25) is connected to described case portion (23) in above-mentioned trailing wheel (WR) side, between the axletree (27) of the crank shaft (22) of described driving engine (E) and above-mentioned trailing wheel (WR), on the lateral surface of described the 1st case member (24), be provided with recess (40), be provided with the extended expansion section of principal part (46a) (46b) from described case body (46) on the case body (46) of described airfilter, described expansion section (46b) is accommodated in the recess (40) of described the 1st case member.