CN2447271Y

CN2447271Y - Bicycle driven by front and rear pressure

Info

Publication number: CN2447271Y
Application number: CN00257955U
Authority: CN
Inventors: 辛在春; 崔刚豪
Original assignee: SIN CHAE CHUN
Current assignee: SIN CHAE CHUN
Priority date: 2000-08-29
Filing date: 2000-10-20
Publication date: 2001-09-12
Anticipated expiration: 2010-10-20
Also published as: KR20020017902A; KR20000064209A

Abstract

The utility model relates to a bicycle driven by front and rear pressure. The utility model comprises a main bicycle frame, a front fork, a rear fork, a handlebar, a saddle, a front fork bracket, a front wheel and rear wheels, wherein, the main bicycle frame forms a ' T ' shape; the front end of the main bicycle frame is movably connected with the front fork, and the rear end of the main bicycle frame is movably connected with the rear fork which is provided with two parallel rear wheels; the ends of two support bars of the main bicycle frame is provided with gear shafts, wherein, both ends of which are provided with two intermediate wheels; the intermediate of each gear shaft is fixed with two gears which are respectively hung with a chain. The utility model is the bicycle for strengthening full body motion, and can prevent slide at the time of riding for upslope.

Description

Pressure-actuated bicycle before and after utilizing

The utility model relates to a kind of bicycle.

General bicycle all is to adopt the mode of stretcher to drive to advance usually, this bicycle does not have the propulsive effort of speed sense and generation very little yet, and rider especially children feels gruelling, and leg also is easy to fatigue, and when going up a slope, glide the safety performance deficiency easily backward.

The purpose of this utility model provide a kind of safety performance good, without stretcher but utilize the front and back pressure that itself produces to come bicycle driven.

The purpose of this utility model realizes by following technical measures: it comprises main car frame, front fork, back vent, handlebar, saddle, front forked bracket, front-wheel and trailing wheel, wherein handlebar is installed on the front fork, front fork and front forked bracket are welded into one, front-wheel is installed on the front fork, trailing wheel is installed on the back vent, and saddle is installed in the rear end of main car frame; Described main car frame is " T " font, and the below of main car frame is provided with two strut bars that are parallel to each other, and the front end of main car frame and front fork flexibly connect, and rear end and back vent flexibly connect, and two trailing wheels arranged side by side are installed on the back vent; The end of two strut bars of main car frame is equipped with a gear wheel shaft, and two breast wheels are installed at the two ends of gear wheel shaft, and the center fixed of gear wheel shaft has two gears, leaves certain interval between two gears; Described gear hangs with a chain respectively, and wherein a gear tangles chain from above, and another gear tangles chain from below; One portable bar and two gear fixed mounts are installed between described front forked bracket and back vent, two fixed gear wheels are housed respectively on the gear fixed mount; Two chains each with the gear fixed mount on fixed gear wheel interlock.

The spring protection lid is installed between the utility model front forked bracket and the main car frame front end, recoil spring is housed in it; One chain lid arrangement is installed between front forked bracket and back vent, and the chain lid arrangement comprises cochain lid and following chain lid, and the chain lid is fastened and connected mutually by set trough with straight angle during chain covers down up and down, and the chain lid arrangement with portable bar and chain bag within it.

The utility model does not adopt the stretcher form, but the pressure that utilizes saddle and handlebar to produce moves forward.When the user rides bicycle; because of saddle is subjected to human weight; front fork also can move because of pressure when back vent was moved backward; the chain that is arranged on chain lid the inside drives one of them intermediate gear and revolves and turn around; the breast wheel that is fixed on the gear wheel shaft is advanced forward; and the intermediate gear sky of another survey turns around; portable bar keeps certain pace of progress and all the time to same direction activity; at this moment the impact that the recoil spring of setting can alleviate front fork inside the spring protection lid makes front fork movable back and forth like a cork; move so repeatedly, will drive bicycle and move forward.

The utility model is a kind of bicycle of strengthening all-around exercises, particularly health and the growth to the child that growing up has sizable help, can cause curiosity, obtain healthy and joyful mentally, and can prevent from when riding the slope to glide and increased safety to the user, also comfortable when advancing.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the utility model integral structure scheme drawing;

Fig. 2 is the subsidiary chain lid structural representation of the utility model;

Fig. 3 is a STRUCTURE DECOMPOSITION scheme drawing of the present utility model;

Fig. 4 is the subsidiary gear wheel shaft of the utility model and the activity chart of chain;

Fig. 5 is the subsidiary chain lid scheme drawing of the utility model;

Fig. 6 is along the section-drawing of A-A line in Fig. 5;

Fig. 7 a is a driving condition scheme drawing of the present utility model;

Fig. 7 b is the scheme drawing of driving condition more of the present utility model.

As Fig. 1, shown in 2, pressure-actuated bicycle before and after the utility model utilizes, comprise main car frame 20, front fork 21, back vent 22, handlebar 24, saddle 29, front forked bracket 31, front-wheel 26 and trailing wheel 28, wherein handlebar 24 is installed on the front fork 21, front fork 21 is welded into one with front forked bracket 31, foot pad plate 25 is vertically fixed on the front forked bracket 31, front-wheel 26 is installed on the front fork 21, trailing wheel 28 is installed on the back vent 22, saddle 29 is installed in the rear end of main car frame 20 by saddle screw 19, spring protection lid 32 is installed between front forked bracket 31 and main car frame 20 front ends, 32 ', recoil spring 30 is housed in it; Main car frame 20 is " T " font, the below of main car frame 20 is provided with two strut bars that are parallel to each other, the front end of main car frame 20 flexibly connects by the place ahead screw 15 and front fork 21, and the rear end flexibly connects by rear screw 18 and back vent 22, and two trailing wheels arranged side by side 28 are installed on the back vent 22; The end of two strut bars of main car frame 20 is equipped with a gear wheel shaft 33, and two breast wheels 27 are installed at the two ends of gear wheel shaft 33, the center fixed of gear wheel shaft 33 have two gears 35,35 ', two gears 35,35 ' between leave certain interval; Gear 35,35 ' respectively hang with a chain 34 ', 34, left gear 35 ' tangle chain 34 wherein, right gear 35 from above tangle from below chain 34 ', as shown in Figure 4; 22 of front forked bracket 31 and back vents by

movable screw

16,17 be equipped with a portable bar 39 and two gear fixed mounts 37,37 ', gear fixed mount 37,37 ' on two fixed gear wheels 38,38 are housed respectively ", 38 ', 38 ; Two chains 34,34 ' each with gear fixed mount 37,37 ' on fixed gear wheel 38,38 ", 38 ', 38 interlock, as shown in Figure 3; One chain lid arrangement is installed between front forked bracket 31 and back vent 22, the chain lid arrangement comprise cochain lid 23 ' and following chain cover 23, up and down chain lid 23 ', 23 be fastened and connected mutually by set trough with straight angle 36 in the chain lid 23 down, the chain lid arrangement with portable bar 39 and chain 34,34 ' bag within it, shown in Fig. 5,6.

Shown in Fig. 7 a, 7b, for front and

back wheel

26,28 is moved easily, breast wheel 27 will contact all the time on ground when bicycle is advanced, and front-wheel 26 or trailing wheel 28 are in the state of built on stilts a little.Shown in Fig. 7 a, front-wheel 26 meeting built on stilts when trailing wheel 28 kiss the earths, at this moment front forked bracket 25 and back vent 22 move at an easy rate; Shown in Fig. 7 b, Yi Bian Yi Bian slam the foot pad plate 25 pull-up handlebar 24 of standing up forward, trailing wheel 28 will move forward by built on stilts.

The utility model is not limited within the scope of above explanation, can design diversified style under emphasis principle unmodified situation, and these styles all fall into protection domain of the present utility model.

Claims

1. pressure-actuated bicycle before and after the utilization, comprise main car frame (20), front fork (21), back vent (22), handlebar (24), saddle (29), front forked bracket (31), front-wheel (26) and trailing wheel (28), wherein handlebar (24) is installed on the front fork (21), front fork (21) is welded into one with front forked bracket (31), front-wheel (26) is installed on the front fork (21), trailing wheel (28) is installed on the back vent (22), saddle (29) is installed in the rear end of main car frame (20), it is characterized in that: described main car frame (20) is " T " font, the below of main car frame (20) is provided with two strut bars that are parallel to each other, the front end of main car frame (20) and front fork (21) flexibly connect, rear end and back vent (22) flexibly connect, and two trailing wheels arranged side by side (28) are installed on the back vent (22); The end of two strut bars of main car frame (20) is equipped with a gear wheel shaft (33), at the two ends of gear wheel shaft (33) two breast wheels (27) are installed, the center fixed of gear wheel shaft (33) has two gears (35,35 '), leaves certain interval between two gears (35,35 '); Described gear (35,35 ') hangs with a chain (34 ', 34) respectively, and wherein a gear (35 ') tangles chain (34) from above, and another gear (35) tangles chain (34 ') from below; One portable bar (39) and two gear fixed mounts (37,37 ') are installed between described front forked bracket (31) and back vent (22), be equipped with respectively on the gear fixed mount (37,37 ') two fixed gear wheels (38,38 ", 38 ', 38 ); Two chains (34,34 ') each with gear fixed mount (37,37 ') on fixed gear wheel (38,38 ", 38 ', 38 ) interlock.

2. pressure-actuated bicycle before and after the utilization as claimed in claim 1 is characterized in that: spring protection lid (32,32 ') is installed between front forked bracket (31) and main car frame (20) front end, recoil spring (30) is housed in it.

3. pressure-actuated bicycle before and after the utilization as claimed in claim 1 or 2, it is characterized in that: between front forked bracket (31) and back vent (22), a chain lid arrangement is installed, the chain lid arrangement comprises cochain lid (23 ') and following chain lid (23), chain lid (23 ', 23) is fastened and connected mutually by set trough with straight angle (36) in the chain lid (23) down up and down, and the chain lid arrangement wraps portable bar (39) and chain (34,34 ') within it.