CN2548828Y - Special engine frame and rear wheel fork for stepped gear motorcycle - Google Patents

Abstract

The utility model relates to a technical scheme to arrange a nature wind cooling engine on pedal type motorcycles, which is characterized in that, an engine fixation frame and a back wheel fork comprising the integrated function of the arrangement of the nature wind cooling engine and the arrangement of a back wheel fork is designed to arrange the engine and the back wheel together in the most compact way, and to achieve the purpose to arrange the nature wind cooling engine on the premise that the original outer cover piece and the motorcycle frame of the pedal type motorcycles are not changed, the implementation of the technical scheme can utilize parts of the original pedal type motorcycles directly to produce novel classification shift speed pedal type motorcycles.

Description

A kind of step change pedal motorcycle special engine frame and rear wheel fork

The utility model relates to the technical scheme that natural air cooled driving engine is installed on pedal motorcycle.

Existing pedal motorcycle is that configuration combines force-air cooling, stepless change, three kinds of functions of automatic clutch in the driving engine of one, be called forced air cold engine, most straddle type motorcycles then are that configuration combines natural air cooled, step change, automatic or manual clutch function in the driving engine of one, are called natural air cooled driving engine.The advantage that cost is low, oil consumption is low, type is mature and stable because natural air cooled driving engine is compared with forced air cold engine, if with natural air cooled engine installation on pedal motorcycle, just can produce that price is low, oil consumption is low, stay-in-grade novel pedal motorcycle, this patent is called it " step change pedal motorcycle ".The patent of number of patent application 00241670.0 and number of patent application 00223481.5 has all proposed the technical scheme of natural air cooled engine installation on pedal motorcycle, their common ground is to have adopted and the consistent rear wheel fork of the special-purpose rear wheel fork structure of straddle type motorcycle, rear wheel fork front end axis hole is connected on the engine suspension plate that is fixed on the vehicle frame by axle, suspension plate connects driving engine again, the rear end of rear wheel fork connects trailing wheel, owing to have suspension plate width dimensions and rear wheel fork deep beam width dimensions in the middle of the size total length of the connection structure of this straddle type motorcycle combination, the size of space that also has rear wheel fork deep beam and suspension plate, the size of space of rear wheel fork deep beam and trailing wheel, natural air cooled engine cylinder after the connection push up to the length of trailing wheel well beyond former pedal motorcycle lay the length in forced air cold engine space, force on the cylinder head of natural air cooled driving engine and the foot-operated flat board that middle cylinder partly is prepended to former pedal motorcycle, caused necessary redesign to make vehicle frame and the middle driving engine wrapper plate that arches upward, change former outward appearance and utility function of stepping on the foot-operated flat board of the main feature of formula motor bike, strengthened product manufacture difficulty and manufacturing cost.

The purpose of this utility model provides a kind of under the prerequisite of the outer cover that does not change former pedal motorcycle, especially foot-operated flat board and vehicle frame, the technical scheme of the natural air cooled driving engine of configuration on former pedal motorcycle.

The technical solution of the utility model is the Der Motortraeger and the rear wheel fork of a kind of step change pedal motorcycle of design special use, and employing and the diverse connection structure combination of above-mentioned straddle type motorcycle, natural air cooled driving engine and trailing wheel are installed together the most compactly, the above-mentioned width dimensions and the size of space have been eliminated, shorten natural air cooled engine cylinder to greatest extent and push up dimensions length, reach the purpose that natural air cooled driving engine is installed to trailing wheel.

By implementing the technical program, natural air cooled driving engine is installed in the installing space of forced air cold engine of former pedal motorcycle smoothly, the outward appearance and the utility function that have kept the foot-operated flat board of former pedal motorcycle, and can make novel pedal motorcycle use the main parts size of former pedal motorcycle fully, the outward appearance cover panel and the vehicle frame of especially investment maximum, the general interchangeability between the main parts size and the normalisation of main parts size have been realized, for the production cycle that shortens novel pedal motorcycle, reducing manufacturing cost has stronger practicality.

Below in conjunction with accompanying drawing embodiment is described:

Fig. 1 is the mounting structure scheme drawing of natural air cooled driving engine and Der Motortraeger, rear wheel fork: wherein (1) is Der Motortraeger, and (2) are natural air cooled driving engine, and (3) are the trailing wheel fork shaft, and (4) are rear wheel fork, and (5) are trailing wheel.

Fig. 2 is the Der Motortraeger scheme drawing: wherein (6) are the Der Motortraeger connecting bore, and (7) are the driving engine connecting bore, and (8) are the rear wheel fork suspension plate, and (9) are the rear wheel fork axis hole.

Fig. 3 is the rear wheel fork scheme drawing: wherein (10) are the rear wheel fork axis hole, and (11) are the trailing wheel axis hole, and (12) are the rear wheel fork left arm, and (13) are the rear wheel fork right arm, and (14) are the rear wheel fork deep beam.

As shown in Figure 1, natural air cooled driving engine (2) is installed in bolt on the driving engine connecting bore (7) of Der Motortraeger of Fig. 2, Der Motortraeger (1) is installed in (figure slightly) on the vehicle frame by Der Motortraeger connecting bore (6), the rear wheel fork axis hole (10) of rear wheel fork (4) (with reference to Fig. 3) is installed on the rear wheel fork axis hole (9) of Der Motortraeger (Fig. 2) with trailing wheel fork shaft (3), and trailing wheel (5) is installed on the trailing wheel axis hole (11) with hind axle.

As shown in Figure 2, the rear wheel fork that has been rigidly connected on Der Motortraeger suspension plate (8), its benefit are both need not do the big transformation of the way to existing pedal motorcycle body frame structure for automotive, have played the effect that rear wheel fork is installed again.

As shown in Figure 3, this rear wheel fork is compared with existing two-wheeled motor vehicle rear wheel fork, its difference is that existing two-wheeled motor vehicle rear wheel fork deep beam is installed between rear wheel fork left arm (12) and the rear wheel fork right arm (13) in the formed plane space, after trailing wheel is fit into rear wheel fork, must there be certain clearance at trailing wheel cylindrical place with deep beam, so trailing wheel to the dimensions length that engine cylinder pushes up can't shorten.And this rear wheel fork deep beam is installed between rear wheel fork left arm (12) and the rear wheel fork right arm (13) outside the formed plane space, crossbeam strides across trailing wheel cylindrical place (referring to Fig. 1), so trailing wheel cylindrical place can try one's best near driving engine, shorten the dimensions length of trailing wheel, reach natural air cooled driving engine is installed to purpose in the installing space of forced air cold engine of former pedal motorcycle smoothly to the engine cylinder top.

Claims (3)

1. step change pedal motorcycle special engine frame and rear wheel fork are made up of hard ware etc., and it is characterized in that: rear wheel fork (4), is attached on the suspension plate (8) of engine mount (1) by axis hole (9) and (10) with trailing wheel fork shaft (3).

2. engine mount according to claim 1 and rear wheel fork is characterized in that going up rigidity at engine mount (1) has linked rear wheel fork suspension plate (8), has rear wheel fork axis hole (9) on the suspension plate.

3. engine mount according to claim 1 and rear wheel fork, the deep beam (14) that it is characterized in that rear wheel fork (4) is an arch configuration, rigidity is attached at the plane space lateral surface that forms relatively between rear wheel fork left arm (12) and the rear wheel fork right arm (13).

Images