CN2152750Y

CN2152750Y - Foldable predrive bicycle

Info

Publication number: CN2152750Y
Application number: CN 92221904
Authority: CN
Inventors: 雷泽奇
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-18
Filing date: 1992-12-18
Publication date: 1994-01-12
Anticipated expiration: 2002-12-18

Abstract

The utility model relates to a predrive folding bicycle which is mainly composed of a front bicycle frame, a back bicycle frame, a pre-arranged chain plate, a seat with a backrest, an operating handle with four connecting rods, a dashpot and a rotary shaft. The utility model is characterized in that the front and the back bicycle frames are connected by a quick dismounting hook. After the quick dismounting hook is opened, the longitudinal fold of the back bicycle frame round the rotary shaft can be accomplished. The operating handle is positioned under the seat. Pedals and the chain plate are arranged on the front upper part of a front wheel. The utility model has the advantages of portable and safe riding, high bicycle frame rigidity, small folded size, convenience for conveying and convenient storage, and the maximum force of a person can be exerted.

Description

Foldable predrive bicycle

The utility model relates to a kind of pre-driver Folding Bicycle, is made of front vehicle frame, back vehicle frame, front and back wheel, steering unit, seat chain drum, chain, rotating shaft and shock absorber, is particularly suitable for long-distance riding.

Traditional bicycle mainly is made of front fork, front-wheel, spider, back vent, trailing wheel, chain drum, chain, foot-operated and saddle, because the spider of rigidity is arranged, its rigidity of structure is good; Chain drum with ride in car below, advance by the foot power driven under the commutation of people's foot wheel when riding, maximum legpower is about cyclist's gravity, can not bring into play people's maximum capacity; Comfortable in order to ride, its seat terrain clearance=(leg length+stretcher minimum terrain clearance)＞leg is long, ride when onboard people is stopped and can not stably stand in the ground, thereby its safety performance is relatively poor.The formation of a known class Folding Bicycle is similar to ordinary bicycle, and be folds needed hinge means more, and this class Folding Bicycle is laterally folded by the realization of the knot of the hinge under saddle joint, and volume after folding is little.Another kind of is single-beam sleeve type folding bicycle.The weak point of this two classes folded bicycle is that rigidity of frame is poor, and the selectivity of road pavement requires very high, and the degree of utilization of bicycle is restricted.

The purpose of this utility model is to provide a kind of vehicle frame good rigidity, riding safety, comfortable, and back vehicle frame is realized longitudinal folding and can be given full play to the pre-driver Folding Bicycle of people's strength along rotating shaft.

The purpose of this utility model can reach by following measure: chain drum (1) is installed in the front vehicle frame intersection point (I) of front-wheel (4) front upper place and locates.Bumper (10) lower end is connected on the intersection point of back vehicle frame by bearing pin (30) and sleeve (31), and sleeve (31) can rotate with respect to bearing pin (30).Spring (27) is sleeved on and makes it to be on the connecting rod (28) between moving seat (29) and the reservation (26), and the bearing pin (25) of bumper upper end inserts the notch of crossbeam (8) termination.Connecting rod (28) can rotate with respect to bearing pin (25), achieves a fixed connection and separates by the quick-release lock hook.Pillar (18) is a queen post, and lower end has circular hole, by coupling bush (21) twin columns is connected as a single entity, and the endoporus of coupling bush is coaxial with the circular hole of strut end head.Back vent (11) is installed in the outside of pillar (18), aims at the center of circle of follower head and strut end head circular hole, inserts the axle (23) of both end thread (BET), and front vehicle frame and back vehicle frame are coupled together, and is fixing with tapped lining (22).Quick-release lock hook (24) is installed in the rear end of crossbeam (8) with bolt (32), and can make bi-directional rotary around bolt (32), and lock hook is fixed bearing pin (25) and crossbeam, and bicycle just becomes a rigid unitary; Throw off from bearing pin (25) when the quick-release lock hook, back vehicle frame separates with this point of connection of front vehicle frame, thereby can realize (16) " F " indication direction of arrow rotation in Fig. 1 around the shaft of back vehicle frame, reaches longitudinal folding purpose.

The purpose of this utility model can also reach by following measure: signaling handle (38) is installed on the stud (42) of seat (9) below, one bearing pin (40) is arranged on the handle, connect rocking arm (34) by adjustable connecting-rod (36), the other end of rocking arm is fixed on the upper end of front fork; Seat is the seat (9) of band backrest, and seat is fixed on the crossbeam (8) by pressing plate (46), bolt (44), nut (45), unclamps the fore-and-aft adjustment that pressing plate can be realized seat.Bicycle crossbeam (8) can be a two-beam type, also can adopt the structure of single-beam formula.

The drawing of accompanying drawing is described as follows:

Fig. 1 is a pre-driver Folding Bicycle structural representation;

Fig. 2 is hinged rotating shaft scheme drawing;

Fig. 3 is hinged rotating shaft A-A cutaway view;

Fig. 4 is bumper and connection diagram thereof;

Fig. 5 is seat and signaling handle and scheme of installation thereof;

Fig. 6 is the upward view of seat and signaling handle and installation thereof;

Fig. 7 is signaling handle and bonded assembly scheme drawing thereof;

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is a pre-driver Folding Bicycle structural representation, crossbeam (8), following crossbeam (19) and pillar (18) are welded into spandrel frame, locate to install chain drum (1) and stretcher (2) at the intersection point (I) of framework, chain drum forms the pre-driver mode in the front upper place of front-wheel (4).Because chain drum has been moved on to the front-wheel front upper place, make that the layout of height of seat is no longer restricted, can arrange lowly as far as possible, thereby reach purpose of safety.Signaling handle is positioned at under-seat away from front-wheel, and therefore the vibration influence that transmitted by front-wheel is very little, and the vibrations of trailing wheel are absorbed by bumper, so the vibrations fatigue of hand has obtained the actv. improvement.The fixed muffle of front fork (6) is welded on crossbeam (8) and the following crossbeam (19), and the lower end of front fork is equipped with front-wheel (4), and operating rock arm (34) is equipped with in the upper end.Intersection point the place ahead of front fork and following crossbeam is equipped with a sprocket wheel (5).Seat (9) is installed on the crossbeam (8).The junction of crossbeam and pillar (18) is called intersection point (II), the junction of following crossbeam and pillar (18) is called intersection point (V), rotating shaft (16) is equipped with at this place, and by the spider that crossbeam (8), following crossbeam (19) and pillar (18) form, constitutes the front vehicle frame of bicycle.Crossbeam, following crossbeam adopt the twin-spar construction that is symmetrical in facing, also can adopt single-spar construction.Equally, pillar (18) is also for being symmetrical in the queen post of facing, also can adopt open side type.The spider that back vent (11), brace (14) and pillar (15) are welded to form is the back vehicle frame.The intersection point of front vehicle frame (II) is connected by bumper (10) with the intersection point (III) of back vehicle frame, and the point of connection of front and back vehicle frame is to locate to realize hinged by rotating shaft (16) at intersection point (V).Intersection point (IV) at the back vehicle frame locates to be equipped with flywheel (47) and trailing wheel (12).Clothes hanger (13) one ends link to each other with intersection point (III) and link to each other with intersection point (IV) by strut (48), and chain (3) is sleeved on chain drum (1) and the flywheel (47), and with sprocket wheel (a 5) tension chain, make chain that enough tension force be arranged and are convenient to ride.

Fig. 2 and Fig. 3 are hinged rotating shaft scheme drawings, and it has provided the structural form of hinged rotating shaft, and pillar (18) is two columns, and lower end is pressed into plate shaped by pipe, have the circular hole with sleeve (21) concentric, by coupling bush (21) two columns are connected as one.Back vehicle frame is installed in the outside of pillar (18) by the circular hole on back vent (11) termination, aim at the center of circle of back vent termination and pillar lower end circular hole, insert the axle (23) of both end thread (BET), screw in threaded lining (22), realize that the hinge that front vehicle frame and back vehicle frame are located at intersection point (V) is connected, and also can adorn antifriction-bearing box to improve its alerting ability and durability in the lining.Following crossbeam (19) is the component part of front vehicle frame, and pole (15) is the component part of back vehicle frame.

Fig. 4 is bumper and connection diagram thereof, quick-release lock hook (24) is fixedly mounted on the rear end of crossbeam (8) with bolt (32), lock hook can be made bi-directional rotary around bolt, the quick-release lock hook colludes on bearing pin (25), vehicle frame before and after the bicycle is connected to an integral body, vehicle frame intersection point (II) before and after bearing pin (25) center is.The bumper lower end is located by the intersection point (III) that the bearing pin (30) on the sleeve (31) is fixed on the back vehicle frame, spring (27) is sleeved on and makes it to be on the connecting rod (28) between moving seat (29) and the reservation (26), and connecting rod (28) lower end is provided with stop pin (28A).In riding, the vibrations of back vehicle frame are absorbed by bumper and cushion, make ride more comfortable.

In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 as can be seen, when the quick-release lock hook colludes on bearing pin (25), bicycle is a rigid unitary, when the quick-release lock hook is opened and thrown off from bearing pin (25), the front and back vehicle frame is located to separate at intersection point (II), thereby can realize (16) edge " F " indication direction of arrow rotation around the shaft of back vehicle frame, reach longitudinal folding purpose.

Fig. 5 and Fig. 6 are the upward views of seat and signaling handle and scheme of installation and seat and signaling handle and scheme of installation thereof, seat (9) emits (45) to be fixed on the crossbeam (8) by pressing plate (46), bolt (44) and spiral shell, unclamps spiral shell and emits (45) seat to ride with the people who adapts to different heights along crossbeam fore-and-aft adjustment position.The backrest of strut (41) supporting chair makes it more firm.Signaling handle (38) is installed in the below of seat, and by stud (42), spiral shell emits (43) fixing, and circular hole is opened at the signaling handle middle part, and this circular hole cooperates with the polished rod of stud (42), serves as axle energy bi-directional rotary with stud (42), reaches the purpose of manipulation.

Fig. 7 is the signaling handle connection diagram, signaling handle (38) is installed on the stud of under-seat by centre hole (39), certain distance is opened a hole in addition in decentering hole (39), connect signaling handle and adjustable connecting-rod (36) with bearing pin (40), the other end of connecting rod (36) connects rocking arm (34) with bearing pin (33); the other end of rocking arm is sleeved on the upper end of front fork, thereby forms four connecting rod steering units.Adjustable connecting-rod (36) is divided into two sections, is spirally connected with swivel nut (37), with the usefulness that adjusts.

The utility model has the following advantages than prior art:

1. owing to adopt the quick-release lock hook longitudinal folding with the moving axis that rotates, have stronger rigidity, very wide to the selection of the road of riding;

2. be with the seat that leans on, overhead highly low, have preferably security;

3. pre-driver more can be brought into play cyclist's strength, and underlying steering handle and bumper lessen fatigue again greatly, thereby suitable long-distance running;

4. after folding, bodywork length shortens, and is convenient to carrying and deposits.

Claims

1, a kind of pre-driver Folding Bicycle mainly is made up of front vehicle frame, back vehicle frame, front and back wheel, steering unit, seat, chain drum, chain, rotating shaft and bumper, it is characterized in that:

A. the preposition front vehicle frame intersection point (I) that is placed in front-wheel (4) front upper place of chain drum is located;

B. bumper (10) lower end is fixed on the intersection point (III) of back vehicle frame by bearing pin (30), spring (27) is sleeved on the connecting rod (28), make it to be between moving seat (29) and the reservation (26), the bearing pin (25) of bumper upper end inserts the notch of crossbeam (8) termination, realizes fixing and disengaging by quick-release lock hook (24);

C. pillar (18) is twin columns, and lower end has circular hole, twin columns is connected the endoporus of coupling bush and the same axis of the circular hole on the strut end head by coupling bush (21); Back vent (11) is installed in the outer survey of pillar (18), aim at the center of circle of back vent termination and strut end head circular hole, the axle (23) that inserts both end thread (BET) couples together front vehicle frame and back vehicle frame, fixing by tapped lining (22), quick-release lock hook (24) is fixedly mounted on the rear end of crossbeam with bolt (32), and catching on bearing pin (25), to make bicycle be a rigid unitary.

2, a kind of pre-driver Folding Bicycle according to claim 1, it is characterized in that handle (38) is installed in the below of seat (9) with stud (42), connect rocking arm (34) by connecting rod (36), the other end of rocking arm is fixed on the upper end of front fork.

3, a kind of pre-driver Folding Bicycle according to claim 1, it is characterized in that saddle is the seat (9) of band backrest, seat is fixed on the crossbeam (8) by pressing plate (46), bolt (44), nut (45), unclamps pressing plate and can realize fore-and-aft adjustment.

4, a kind of pre-driver Folding Bicycle according to claim 1 is characterized in that crossbeam (8) structurally can be that two-beam type also can adopt the single-beam formula.