CN200948843Y

CN200948843Y - Two-people leisure bicycle

Info

Publication number: CN200948843Y
Application number: CNU2006201338904U
Authority: CN
Inventors: 杨宝玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-26
Filing date: 2006-09-26
Publication date: 2007-09-19
Anticipated expiration: 2016-09-26

Abstract

The utility model relates to a double coasting bicycle which is formed by combining two bicycles side by side. A rack of the bicycle consists of a bottom frame, a rear support and a bending beam at the center. The two ends of the bending beam are fixedly connected respectively with the front-end of the bottom frame and the upper-end of the rear support. A crossbar is fixedly connected with the upper-middle position of the bending beam. Two front wheels, two rear wheels and two center shafts are arranged respectively at the front end, the rear end and the middle of the bottom frame. A steering wheel at one end of the crossbar is connected flexibly with a cross spider universal joint. A steering device is arranged between the cross spider universal joint and the two front wheels. The two sides of the rear support are provided respectively with a saddle, a backrest and a handrail etc. The utility model has a simple and reasonable structure: a rear axle of the bicycle is of the same structure of a tricycle except that the rear axle of the bicycle has two flying wheels. The bicycle can be droved by two people pedaling at the same time or by only one people. The steering device of the rear axle is very flexible and easy to operate. As a universal hydraulic disc brake is adopted, the bicycle is safe and suitable for both the elder people and children.

Description

Double leisure bicycle

Technical field

The utility model relates to a kind of bicycle, is for double quadricycle of riding specifically.

Background technology

Bicycle is with a long history, and constantly develops and innovate, from single, doublely take turns to three, four-wheel, to many people, from the structure to the moulding, the kind model is various, and is in different poses and with different expressions from single, double.It is a kind of vehicle of trip, also can be described as a kind of exercise and fitness equipment or converter tools, and to professional kind development.Common double two-wheeled cycle is long, and common people also are difficult for grasping, and safety performance is undesirable simultaneously, and certain luxury tandem bicycle price is expensive high, lacks practicality.

The utility model content

The technical problems to be solved in the utility model provides a kind of rational in infrastructure, and is economical and practical, the double leisure bicycle of safety and environmental protection.

The double leisure bicycle of the utility model comprises vehicle frame, wherein vehicle frame comprise anterior for trapezoidal, centre and rear portion be the posterior bracket of rectangular under(-)chassis, framed structure and the bending beam at center; Posterior bracket lower end and under(-)chassis rear portion are connected to one, captive joint with the posterior bracket upper end with the front end of under(-)chassis respectively in the two ends of bending beam, the position upwards is provided with the cross bar of captiveing joint with it therebetween, captives joint with the posterior bracket lower link by the supporting brace downwards; Below under(-)chassis front end, rear portion and centre, two front-wheels, two trailing wheels and two axis are housed accordingly respectively; Be rotationally connected by chain respectively between two axis and two trailing wheels; The bearing circle and the cross-axle universal shaft pole that are installed in cross bar one end flexibly connect, and between cross-axle universal shaft pole and two front-wheels steering hardware are housed; Vehicle seat is equipped with on both sides at posterior bracket respectively.

The double leisure bicycle of the utility model, wherein steering hardware comprises the rotation minor axis that is fixed on under(-)chassis lower front centre by support, rotating the minor axis upper end is connected with cross-axle universal shaft pole lower end, its lower end is connected with the fork vertical fixing, one end of the other end of fork and left and right connecting rod is hinged, and the other end of left and right connecting rod is hinged by regulating joint and quarter butt respectively; Vertically that the vertical pivot of bearing is housed is equipped the axle sleeve of captive joint and two ends respectively on two angles of the ladder frame front end of under(-)chassis, the lower end of vertical pivot links into an integrated entity with the horizontal shaft that front-wheel is housed is vertical, and this end also is provided with the quarter butt that vertically is connected as a single entity mutually with vertical pivot and horizontal shaft.

The double leisure bicycle of the utility model, wherein steering hardware comprises the rack-and-gear parts that are connected as a single entity that are fixed on under(-)chassis lower front centre by support, gear wheel shaft in the rack-and-gear parts is connected with cross-axle universal shaft pole lower end, and the two ends of its tooth bar are hinged by regulating joint and quarter butt respectively; Vertically that the vertical pivot of bearing is housed is equipped the axle sleeve of captive joint and two ends respectively on two angles of the ladder frame front end of under(-)chassis, the lower end of vertical pivot links into an integrated entity with the horizontal shaft that front-wheel is housed is vertical, and this end also is provided with the quarter butt that vertically is connected as a single entity mutually with vertical pivot and horizontal shaft.

The double leisure bicycle of the utility model, wherein axis comprises sprocket wheel and pedal, the overcoat of axis is welded on below the U type draw-in groove, by being bolted to the under(-)chassis below; A downward bending edges that is connected as a single entity is stretched out in U type draw-in groove junction, with the bent plate that is welded on under(-)chassis below by bolt from the fixing axis of other direction.

The double leisure bicycle of the utility model, wherein two trailing wheels are installed in the rear axle two ends; Two flywheels of fixed installation on rear axle, and being connected with sprocket rotation on the axis by chain respectively, rear axle by bearing fixing below the under(-)chassis rear portion.

The double leisure bicycle of the utility model wherein is equipped with the hydraulic pressure disc brake in the middle part of rear axle, and the control handle of hydraulic pressure disc brake is fixed on the cross bar.

The double leisure bicycle of the utility model wherein is equipped with backrest and handrail on posterior bracket top, and its side also is provided with the deck of loading.

The double leisure bicycle of the utility model wherein is provided with the trim board cover above the bending beam, the trim board cover is an arc, and its front portion is a triangle, captives joint with the posterior bracket upper end with the under(-)chassis front end respectively in two ends; Between under(-)chassis rear end and posterior bracket bottom, baffle plate is housed also.

The utility model is equivalent to two bicycles are made up side by side, designed the simple and reasonable vehicle frame that constitutes by under(-)chassis, posterior bracket, bending beam and supporting brace etc., rear axle adopts the structure of three-wheel vehicle rear axle, but two flywheels are housed, and two people are pedaled simultaneously or a people is pedaled all and can be driven, and have designed the steering hardware of front-wheel, turn to turn round light flexibly, adopt general-duty hydraulic pressure disc brake, make tandem bicycle safe and reliable, the elderly and children are all rideable.

Description of drawings

Fig. 1 is the double leisure bicycle structural principle of a utility model schematic perspective view;

Fig. 2 is the under(-)chassis schematic top plan view among Fig. 1;

Fig. 3 is a fork steering hardware structural principle schematic top plan view in the utility model;

Fig. 4 is Fig. 3 steering state scheme drawing;

Fig. 5 is the utility model middle gear rack steering mechanism structural principle schematic top plan view;

Fig. 6 is a front-wheel rotatable parts structural representation among Fig. 3 or Fig. 5;

Fig. 7 is Fig. 6 schematic top plan view;

Fig. 8 is that the A of axis mounting structure among Fig. 2 is to scheme drawing.

The specific embodiment

By Fig. 1 as seen to Fig. 4, the double leisure bicycle of the utility model is that two bicycle unitized design arranged side by side are formed, wherein vehicle frame comprise anterior for trapezoidal, centre and rear portion be the posterior bracket 2 of rectangular under(-)chassis 1, framed structure and the bending beam 3 at center; Posterior bracket 2 upper ends recede, the lower end is fixed on top, under(-)chassis 1 rear portion, and be positioned at the place ahead of rear axle 23, captive joint with posterior bracket 2 upper ends with the front end of under(-)chassis 1 respectively in the two ends of bending beam 3, therebetween the position by with its fixing U type hoop repeatedly on captive joint a cross bar 4, and cross bar 4 is vertical mutually with bending beam 3, captives joint with posterior bracket 2 lower link by supporting brace 5 downwards; Under(-)chassis 1 front end, rear portion and middle below two front-wheels 6, two trailing wheels 7 and two axis 8 are housed respectively accordingly; The bearing circle 9 that is installed in cross bar 4 one ends flexibly connects with cross-axle universal shaft pole 10, between cross-axle universal shaft pole 10 and two front-wheels 6 steering hardware is housed; Vehicle seat 11 is equipped with on both sides at posterior bracket 2 respectively.

Wherein front-wheel 6 is placed on two angles of ladder frame front end of under(-)chassis 1, by vertically the axle sleeve 12 of captive joint and the vertical pivot 13 that bearing is equipped with at two ends are equipped with, the lower end of vertical pivot 13 and horizontal shaft 14 vertical the linking into an integrated entity that front-wheel 6 is housed, this end also is provided with the quarter butt 15 that vertically is connected as a single entity mutually with vertical pivot 13 and horizontal shaft 14.Be that vertical pivot 13, horizontal shaft 14 and quarter butt 15 are the rotatable parts that an end is connected as a single entity, vertical pivot 13 and quarter butt 15 are finished and are turned to function, and horizontal shaft 14 advances front-wheel, as Fig. 6, shown in Figure 7.The diameter of axle of vertical pivot 13 is preferably designed as the hierarchic structure that the bottom is big, top is little, corresponding upper and lower bearing also small one and large one, axle sleeve 12 is equipped with it.

Two trailing wheels 7 are installed in rear axle 23 two ends, and are identical with axle construction behind the general three-wheel vehicle; But two flywheels 24 of fixed installation on rear axle 23, and being connected with sprocket rotation in the axis 8 by chain respectively, rear axle 23 by bearing fixing below under(-)chassis 1 rear portion.

Axis 8 comprises sprocket wheel and pedal etc., and the overcoat of axis 8 is welded on below the U type draw-in groove 20, and U type draw-in groove 20 is stuck in the side frame outside of under(-)chassis 1, above by the bolt crosswise fixed; Because a downward bending edges 21 that is connected as a single entity is stretched out in U type draw-in groove 20 junctions, axis 8 is fixing from other direction and under(-)chassis 1 with the bent plate 22 that is welded on under(-)chassis 1 below by bolt, can adjust simultaneously the distance between axis 8 and the flywheel 24, promptly regulate the degree of tightness of chain, as shown in Figure 8.Sprocket wheel on two axis 8 all is placed in the inboard of under(-)chassis 1.

Comprise among steering hardware first embodiment of front-wheel 6 by support and be fixed on the middle rotation minor axis 16 of under(-)chassis 1 lower front, this rotates minor axis 16 upper ends and is connected with cross-axle universal shaft pole 10 lower ends, its lower end is connected with fork 17 vertical fixing, the other end of fork 17 is hinged with left and right connecting rod 18 1 ends, the other end of left and right connecting rod 18 is hinged by regulating joint and quarter butt 15 respectively, is called the oscillating rod type steering hardware.During use, steering wheel rotation 9 rotates the rotation minor axis 16 that is fixed in under(-)chassis 1 front portion by cross-axle universal shaft pole 10, drive fork 17 swings, thereby promote quarter butt 15 swings on left and right connecting rod 18 and both sides, make two front-wheels 6 deflection one angle in the same way at last, reach the purpose that turns to.All hinge-points all adopt ball-and-socket type joint, can overcome the upper and lower displacement of fork 17 swing, make turn to steadily, corner is big.The other end of left and right connecting rod 18 all is connected with quarter butt 15 by regulating joint in the enforcement, regulates the distance between two quarter butts, 15 hinge-points, make its with two vertical pivots 13 between apart from consistent, guarantee two front-wheel steering unanimities.

Fig. 5 is a rack-and-gear steering hardware example structure scheme drawing, it comprises the rack-and-gear parts 19 that are connected as a single entity that are fixed on under(-)chassis 1 lower front centre by support, gear wheel shaft in the rack-and-gear parts 19 is connected with cross-axle universal shaft pole 10 lower ends, the two ends of its tooth bar are hinged by regulating joint and quarter butt 15 respectively, and other structure is identical with the former with steering principle.

Brake gear on the double leisure bicycle of the utility model is commercially available hydraulic pressure disc brake 25, is installed in the middle part of rear axle 23, and its control handle 26 is fixed on the described cross bar 4, is communicated with by hydraulic pipe.

Backrest 27 and handrail 28 are equipped with in posterior bracket 2 tops at the double leisure bicycle of the utility model, and be more comfortable when riding, and its side also is provided with the deck 29 of loading, can lay water glass etc.

Be provided with trim board cover 30 above bending beam 3, this trim board cover 30 is an arc, and its front portion is a triangle, captives joint with posterior bracket 2 upper ends with under(-)chassis 1 front end respectively in two ends; Between under(-)chassis 1 rear end and posterior bracket 2 bottoms, curved baffle 31 is housed also, all adopts light material to make, make car load have beautiful appearance and moulding.

Claims

1, a kind of double leisure bicycle comprises vehicle frame, it is characterized in that described vehicle frame comprise anterior for trapezoidal, centre and rear portion be the bending beam (3) at rectangular under(-)chassis (1), posterior bracket (2) and center; Described posterior bracket (2) lower end and described under(-)chassis (1) rear portion are connected to one, captive joint with described posterior bracket (2) upper end with the front end of described under(-)chassis (1) respectively in the two ends of described bending beam (3), the position upwards is provided with the cross bar (4) of captiveing joint with it therebetween, captives joint with described posterior bracket (2) lower link by supporting brace (5) downwards; In described under(-)chassis (1) front end, rear portion and middle below two front-wheels (6), two trailing wheels (7) and two axis (8) are housed accordingly respectively; Be rotationally connected by chain respectively between two described axis (8) and described two trailing wheels (7); Bearing circle (9) at described cross bar (4) one ends flexibly connects with cross-axle universal shaft pole (10), between described cross-axle universal shaft pole (10) and two described front-wheels (6) steering hardware is housed; On the both sides of described posterior bracket (2) vehicle seat (11) is housed respectively.

2, double leisure bicycle according to claim 1, it is characterized in that described steering hardware comprises the rotation minor axis (16) that is fixed on described under(-)chassis (1) lower front centre by support, described rotation minor axis (16) upper end is connected with described cross-axle universal shaft pole (10) lower end, its lower end is connected with fork (17) vertical fixing, one end of the other end of described fork (17) and left and right connecting rod (18) is hinged, and the other end of described left and right connecting rod (18) is hinged by regulating joint and quarter butt (15) respectively; Vertically the axle sleeve of captive joint (12) and two ends vertical pivot (13) that bearing is housed is equipped respectively on two angles of the ladder frame front end of described under(-)chassis (1), the lower end of described vertical pivot (13) also is provided with the described quarter butt (15) that vertically is connected as a single entity mutually with described vertical pivot (13) and horizontal shaft (14) with vertical the linking into an integrated entity of the horizontal shaft that described front-wheel (6) are housed (14), this end.

3, double leisure bicycle according to claim 1, it is characterized in that described steering hardware comprises the rack-and-gear parts (19) that are connected as a single entity that are fixed on described under(-)chassis (1) lower front centre by support, gear wheel shaft in the described rack-and-gear parts (19) is connected with described cross-axle universal shaft pole (10) lower end, and the two ends of its tooth bar are hinged by regulating joint and quarter butt (15) respectively; Vertically the axle sleeve of captive joint (12) and two ends vertical pivot (13) that bearing is housed is equipped respectively on two angles of the ladder frame front end of described under(-)chassis (1), the lower end of described vertical pivot (13) also is provided with the described quarter butt (15) that vertically is connected as a single entity mutually with described vertical pivot (13) and horizontal shaft (14) with vertical the linking into an integrated entity of the horizontal shaft that described front-wheel (6) are housed (14), this end.

4, according to claim 2 or 3 described double leisure bicycles, it is characterized in that described axis (8) comprises sprocket wheel and pedal, the overcoat of described axis (8) is welded on below the U type draw-in groove (20), by being bolted to described under(-)chassis (1) below; A downward bending edges (21) that is connected as a single entity is stretched out in described U type draw-in groove (20) junction, fixes described axis (8) by bolt from other direction with the bent plate (22) that is welded on described under(-)chassis (1) below.

5, double leisure bicycle according to claim 4 is characterized in that described two trailing wheels (7) are installed in described rear axle (23) two ends; Go up fixed installation two flywheels (24) at described rear axle (23), and be connected with sprocket rotation on the described axis (8) by chain respectively, described rear axle (23) is by the below of bearing fixing at described under(-)chassis (1) rear portion.

6, double leisure bicycle according to claim 5 is characterized in that in the middle part of described rear axle (23) hydraulic pressure disc brake (25) being housed, and the control handle (26) of described hydraulic pressure disc brake (25) is fixed on the described cross bar (4).

7, double leisure bicycle according to claim 6 is characterized in that on described posterior bracket (2) top backrest (27) and handrail (28) being housed, and its side also is provided with the deck (29) of loading.

8, double leisure bicycle according to claim 7, it is characterized in that being provided with trim board cover (30) in the top of described bending beam (3), described trim board cover (30) is an arc, its front portion is a triangle, captives joint with described posterior bracket (2) upper end with described under(-)chassis (1) front end respectively in two ends; Between described under(-)chassis (1) rear end and described posterior bracket (2) bottom, plane or curved baffle (31) are housed also.