CN2345436Y

CN2345436Y - Fork tricycle

Info

Publication number: CN2345436Y
Application number: CN98215735U
Authority: CN
Inventors: 蒋文杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-15
Filing date: 1998-06-15
Publication date: 1999-10-27
Anticipated expiration: 2008-06-15

Abstract

The utility model relates to a fork type man-power tricycle comprising a front wheel, handlebars, a front frame, a carriage and rear wheels. The utility model is characterized in that the frame is provided with a pedal rod moving forward and a pedal rod moving backward; short arm end parts of the pedal rods are respectively fixed to a moon-shaped gear, and the gears are engaged with an intermediate gear on a rear frame and a wheel moving backward; the intermediate gear is engaged with a gear moving forward, and is respectively connected with sprockets on the rear wheels by a sprocket and a chain at both ends of a rear shaft; the rear frame forms a V shape; end parts of two side arms of the rear frames are respectively connected with two U-shaped support frames; two rear wheels are respectively fixed to the support frames; in addition, the utility model is also provided with a reversing mechanism, which is convenient in moving backward; drivers do not get off. The utility model has the advantages of labor saving in riding, safety and big carrying capacity, which is not easy to fatigue.

Description

The V shape three-wheel vehicle

The utility model relates to a kind of three-wheel vehicle, specifically the V shape manual tricycle.

Existing manual tricycle structure has front vehicle wheel, handlebar, front vehicle frame, back vehicle frame, rear wheel and railway carriage, employing be linked transmission, promptly on front vehicle frame, be provided with hinge wheel, fixed conveyor axle on the vehicle frame of back, railway carriage then is placed in the top of transmission shaft; Rotate a hinge wheel by riding and turn axle, take turns by the clavula at chain drive transmission shaft middle part and rotate, and drive the wheel at transmission shaft two ends, vehicle is moved ahead.When riding and since chaufeur to the application of force direction that turns axle be constantly change and constantly adjust the body appearance because of the application of force, physical consumption is fast, and is tired easily, therefore ride more painstaking, endurance ability is relatively poor; In order to guarantee to travel steadily, make the volume of railway carriage be restricted, unsuitable loading is overweight; Chinese patent 93208852 discloses a kind of bicycle and man, three-wheel vehicle drive mechanism, and it adopts the link gear drive mechanism, rides to be connected with bent axle, bent axle and connecting rod rack and flywheel gear transmission, flywheel gear and gear mesh produce power, though it is laborsaving to adopt this structure to ride, but be subjected to the restriction of its body frame structure for automotive, railway carriage still is placed in the top of transmission shaft, can not strengthen load carrying ability, otherwise can make that the center of gravity of back vehicle body is higher, stationarity is relatively poor, easily overturning, dangerous; Also there is the inconvenient defective of reversing in said structure in addition.

The purpose of this utility model be to provide a kind of ride laborsaving, safety and stability, the big and manual tricycle easily of moveing backward of load-carrying.

For achieving the above object, the utility model is provided with move ahead treadle and backward treadle on front vehicle frame, and fulcrum is positioned at the back lower place of front vehicle frame; With vehicle frame behind the front vehicle frame bonded assembly be " V " shape vehicle frame, the parallel antero posterior axis that is provided with between the vehicle frame side arm, the middle part of rear axle move ahead gear and backward gear, the rear axle two ends are left and right sides sprocket wheel fixedly, and intermediate gear is arranged on the front axle; End in back vehicle frame two side arms connects two " U " shape bracing frames respectively, and two bracing frames are parallel to each other, and two rear vehicle shafts that will be provided with sprocket wheel are separately fixed on each bracing frame; Two " U " t joists of crosswise fixed between the inner webs of " U " shape bracing frame, railway carriage is placed on the joist.Described treadle and the backward treadle of moving ahead is long-armed lever, and the long-armed end connecting pin of each treadle is stepped on, and each fixes " month shape " gear each treadle galianconism end; Move ahead " month shape " gear and intermediate gear engagement on the treadle, the intermediate gear and the gear mesh that moves ahead, the sprocket wheel on the rear axle is connected with sprocket wheel on the trailing wheel respectively by chain; " month shape " direct geared and backward gear mesh on the backward treadle.In order to make move ahead gear and backward gear and transmission shaft be in engagement or released state, respectively be provided with arrangement of clutch between gear and backward gear and the transmission shaft moving ahead.For move ahead treadle and backward treadle can be resetted, between the long-armed and front vehicle frame of treadle, be respectively equipped with pull back spring.

Because of the utility model adopts the secondary type of drive, i.e. gear transmission and linked transmission, application of force direction was with low uncertainty when chaufeur was ridden, and did not need constantly to adjust the body appearance, and the idle work of doing is few, and the physical efficiency degree of utilization is higher; Because the back vehicle frame is " V " shape vehicle frame, and rear wheel is not coaxial, can turn down the railway carriage position, reduce the vehicle body center of gravity on the other hand, strengthen the railway carriage height, improve the volume of railway carriage, can increase load carrying ability and matter-loading amount and cruising characteristic.So laborsaving, safety that the utility model is ridden is difficult for tiredly, load carrying ability, matter-loading amount are big, and the utility model also is provided with reverse gear in addition, need not get off to get final product backward.

Below in conjunction with accompanying drawing the utility model embodiment is described in detail:

Fig. 1 is the birds-eye view of the utility model embodiment;

Fig. 2 is the lateral plan of the utility model embodiment;

Fig. 3 is the front elevation of the utility model embodiment joist.

With reference to Fig. 1, Fig. 2 and Fig. 3, the utility model comprises front-wheel, handlebar, front vehicle frame, railway carriage and rear wheel, and characteristics are to be provided with move ahead treadle 2 and backward treadle 3 on front vehicle frame 1, and fulcrum 4 is positioned at the back lower place of front vehicle frame 1; With vehicle frame behind the front vehicle frame bonded assembly 7 be " V " shape vehicle frame, the parallel antero posterior axis 8,8 ' of establishing between vehicle frame side arm 71, the middle part of rear axle 8 move ahead gear 9 and backward gear 10, described gear 9 and the backward gear 10 of moving ahead is ratchet, the two ends of rear axle 8 are left and right sides sprocket wheel 21,21 ' fixedly, and intermediate gear 11 is arranged on the front axle 8 '; End in back vehicle frame 7 two side arms 71 connects two " U " shape bracing frames 12,12 ' respectively, bracing frame 12,12 ' is parallel to each other, and will be provided with sprocket wheel 13,13 ' two rear vehicle shafts 14,14 ' are separately fixed at bracing frame 12, on 12 ', two " U " t joists 18,18 ' of crosswise fixed between " U " bracing frame 12,12 ' inner webs 17,17 ', railway carriage are installed on the

joist

18,18 '.Described treadle 2 and the backward treadle 3 of moving ahead is long-armed lever, steps on 5 at the long-armed end connecting pin of move ahead treadle 2 and backward treadle 3, and each fixes " month shape " gear 6,6 ' the galianconism end; Move ahead " month shape " gear and intermediate gear 11 engagements on the treadle 2, the intermediate gear 11 and gear 9 engagements that move ahead, rear axle 8 upper sprocket wheels 21,21 ' pass through chain 15,15 ' and are connected with sprocket wheel 13,13 ' on the trailing wheel; " month shape " gear 6 ' direct and backward gear 10 engagements on the backward treadle 3.

In order to make gear 9 and the backward gear 10 that move ahead be in engagement or released state, be respectively equipped with clutch pawl 19,19 ' between gear 9 and backward gear 10 and the transmission shaft 8 moving ahead with transmission shaft 8.

For move ahead treadle 2 and backward treadle 3 can be resetted, between the long-armed and front vehicle frame 1 of treadle 2,3, be respectively equipped with pull back spring 20.

In order to improve the safety of three-wheel vehicle, on the rear axle 8 of back vehicle frame 7, be provided with brake gear 22.

Claims

1, a kind of V shape, three-wheel vehicle comprises front vehicle wheel, handlebar, front vehicle frame and rear wheel, it is characterized in that: be provided with treadle that moves ahead (2) and backward treadle (3) on front vehicle frame (1), fulcrum (4) is positioned at the back lower place of front vehicle frame (1); With vehicle frame (7) behind front vehicle frame (1) bonded assembly be " V " shape vehicle frame, parallelly between vehicle frame side arm (71) be provided with antero posterior axis (8), (8 '), the middle part of rear axle (8) move ahead gear (9) and backward gear (10), rear axle (8) two ends are left and right sides sprocket wheel (21), (21 ') fixedly, and intermediate gear (11) is arranged on the front axle (8 '); End in back vehicle frame (7) two side arms (71) connects two " U " shape bracing frames (12), (12 ') respectively, bracing frame (12), (12 ') are parallel to each other, and two rear vehicle shafts (14), (14 ') that will be provided with sprocket wheel (13), (13 ') are separately fixed at bracing frame (12), on (12 '), in the inner webs (17) of " U " shape bracing frame (12), (12 '), two " U " t joists of crosswise fixed (18), (18 ') between (17 '), railway carriage is placed in joist (18), on (18 ').Described treadle that moves ahead (2) and backward treadle (3) are long-armed lever, step on (5) at the long-armed end connecting pin of treadle that moves ahead (2) and backward treadle (3), and each fixes " month shape " gear (6), (6 ') the galianconism end; " month shape " gear that moves ahead on the treadle (2) meshes with intermediate gear (11), intermediate gear (11) with move ahead gear (9) engagement, rear axle (8) upper sprocket wheel (21), (21 ') are connected with sprocket wheel (13), (13 ') on the trailing wheel by chain (15), (15 '); Direct and backward gear (10) engagement of " month shape " gear (6 ') on the backward treadle (3); Between the described gear that moves ahead (9) and backward gear (10) and transmission shaft (8), respectively be provided with arrangement of clutch; Between the long-armed and front vehicle frame (1) of described treadle (2), (3), be respectively equipped with pull back spring (20).The described gear that moves ahead (9) is ratchet with backward gear (10).

2, V shape three-wheel vehicle as claimed in claim 1 is characterized in that: described arrangement of clutch is clutch pawl (19), (19 ').

3, V shape three-wheel vehicle as claimed in claim 1 is characterized in that: be provided with brake gear (22) on the rear axle (8) of back vehicle frame (7).