CN87101807A

CN87101807A - foldable touring bike

Info

Publication number: CN87101807A
Application number: CN 87101807
Authority: CN
Inventors: 张乾梁
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-03-07
Filing date: 1987-03-07
Publication date: 1988-11-02

Abstract

The invention provides a "foldable tourist bicycle" device which can be folded into a box shape and packed into a tourist bag, which is an improvement of the CN85102418A bicycle. The advantage of this bicycle is that it adopts the form of an ordinary bicycle to be folded into a box shape, and the folded volume is smaller than that of the existing folding bicycle. Taking a 16″ bicycle as an example, the length of the bicycle is 1300mm, and it can be folded into a volume of 580×540×240mm. About 15 seconds, the production weight of ordinary materials is about 15kg.

Description

Folding travelling bicycle

The invention relates to a foldable travelling bicycle device which can be folded, particularly can be folded into a box shape and put into a travelling case to be carried for travelling, and is an improvement of Chinese patent application No. CN85102418A folding travelling bicycle.

Folding bicycles are generally folded by using a structure of a folding bicycle body and a structure of a telescopic bicycle body, such as peer-to-peer folding bicycles, telescopic bicycles, U.S. Pat. No. 6,3015498, folding bicycles with two folds and three sections, future bicycles, which are introduced in the United kingdom in 1979, and the like, which are produced in the early stage of China, but have the following problems in use: the former has large folded volume and irregular appearance, which brings people little necessity for folding, and the latter has the defect of sectional fastening when in use.

In order to solve the problem, it is a common practice to design the vehicle body as small wheels, which can be folded into a box-shaped and luggage-containing structure, and to install a quick-locking and quick-releasing mechanism at the folded position. There are still limitations: for example, the folded volume of the one-side-down folding bicycle released in 5 th 1982 in America, the one-side-down folding bicycle released in 6 th 1986 in Japan is still larger, the folded bicycle can be put into a goods bucket of a car, is inconvenient to carry on a bus or a train when traveling, and has poor applicability in China, for example, the folded bicycle released in 6 th 1986 in America, the fully folded bicycle released in 7 th 1986 in China and the chainless folding bicycle are of independent high-rod and connecting-rod structures after folding a seat rod, the length of a handle bar is changed into an overlong type, and a handle bar double-connecting-rod structure is adopted, so that the mechanical strength of the part when a vehicle body is used is greatly influenced, in the design of the former folded bicycle, although a double-rod supporting piece is added on the handle bar, the section bar of the seat is changed, but the main defects are still not overcome, and the structure is complicated, and the cost is also high.

The invention aims to provide a new and improved folding tourism bicycle device adopting a common bicycle form, which is convenient to fold and unfold, has good use rigidity of a bicycle body, can be loaded into a case and carried for tourism after being folded, can be folded into a smaller box-shaped volume than the existing folding bicycle under the same wheels, and is the Chinese patent application number: CN85102418A vehicle,

CN86103945 vehicle and CN85300574 vehicle.

The invention is realized by the following steps: the invention is realized by adopting the basic structure that a folding stay bar in a tripod of a CN85102418A vehicle is used for folding a vehicle seat into a box, a structure that two vehicle handles can be automatically folded when being folded is added by a structure that a vehicle beam and wheels are folded into a zigzag shape, and a spring chain connecting structure and a pedal folding box-entering structure are added on a vehicle core vertical pipe.

The invention only needs to change the simple self-made parts with small quantity on the old bicycle, so the structure is particularly simple and the cost is low. Meanwhile, the invention has the advantages of better practicability and rigidity because the basic body structure of the common bicycle is not separated, and the bicycle is easily accepted by the majority of users.

The invention will be described in further detail below with reference to the following drawings:

FIG. 1 is a view showing the configuration of a foldable bicycle for touring according to the present invention.

The bicycle is composed of a handlebar (1), a bicycle core vertical tube (2), a bicycle beam (3), a wheel (4), a tripod (5), a flywheel (6), pedals (7), a front fork (8), a bicycle seat and a clothes rack, wherein the bicycle beam (1) adopts a flat tube straight bicycle beam, the wheel (4) can adopt the same structure of the wheel, or can adopt a structure with a small front wheel and a large rear wheel, the bicycle seat can be retracted into a box body when the bicycle is folded, the left pedal of the pedal (7) can be reversely turned into the box, and the tripod (5) is composed of a bicycle seat rod vertical tube, a lower supporting rod and a foldable supporting rod which can be folded into two sections, and the bicycle seat, the clothes rack and the bicycle beam (3) can be locked when the bicycle is unfolded.

FIG. 2 is a front view of the foldable touring bicycle apparatus as folded into a box body according to the present invention.

If the vertical tube (2) of the bicycle core is connected by a spring chain (9), two handles of the handlebar (1) are folded and arranged at two sides of a front wheel (4), a bicycle beam (3) and the front and rear wheels (4) are folded into a zigzag shape, the front and rear wheels are folded and arranged in a box body (10) in parallel, a tripod (5) is folded and arranged between a vertical tube of a saddle rod and the rear wheel along with a clothes hanger, a left pedal (7) and the saddle are folded and arranged in the box after being reversed, when the chain plate is arranged in the figure, the chain plate and the front wheel are changed by a structure folded and arranged at the outer side surface of the rear wheel, the saddle rod is changed to be short, the right end of the bicycle beam (3) is downwards displaced in the figure after the front wheel is changed to be small, and the folding and rotating angle (the following) of a hinge piece of the bicycle beam for controlling the front wheel to be folded into the box: the minimum folding volume vehicle with the folded box width equal to the wheel diameter of the rear wheel is structured as a 13 ' wheel for the front wheel, a 16 ' wheel for the rear wheel can produce a vehicle with the folding volume of 580 multiplied by 410 multiplied by 240mm, a 580 multiplied by 540 multiplied by 240mm volume vehicle can be produced when the front wheel [4] and the rear wheel [4] adopt the 16 ' wheel, the unfolding time is about 10 seconds, the folding time is about half minute, the vehicle length: 1300mm, 930mm high, about 12.5kg weight modified from old bicycle, about 7kg produced from aluminum alloy.

Fig. 3A and fig. 3B and fig. 4 are views showing a folding structure of the handle bar (1) of the foldable touring bicycle according to the present invention. In the figure, a figure 3A is a front view of a handlebar (I), a figure 3B is a left view of the handlebar (I), a handle (11) of a handlebar (1) is inserted into a U-shaped pipe of a handle seat (12) and can rotate, and a figure (15) is an upper vertical pipe of a bicycle core. When a return spring of the handle (11) is arranged at the position A in the figure 4, when the device is folded, the handle (1) presses a key (14) on the transverse pin, and the steel ball (13) can force the lock pin to retreat, so that the two handles (11) can be automatically folded immediately. The unfolding angle of the two handles (11) used by the handlebar (1) can be controlled to be generally 10-18 degrees by the opposite bending angle of the lower ends of the two handles (11).

Fig. 5 is an assembly view of the core tube (2) and the beam (3) of the foldable touring bicycle device according to the present invention.

As shown in the figure, an upper vertical pipe (15) in figure 5A and a lower vertical pipe (16) in figure 5B of a vehicle core vertical pipe (2) are connected by a spring chain (9) in a pulling mode, a tenon (17) is combined with a connecting column (18) during the connection, a reverse locking pin (19) is used for locking, a double-button piece (20) is used for releasing during the folding of the device, a vertical pipe capping screw cover is arranged in a figure (21), a guide spring pipe is arranged in a figure (22), a supporting spring piece is arranged in a figure (23), and the combination of a vehicle beam (3) and the lower vertical pipe (16) is completed by a detachable hinge piece (24). And 25 is a steering block part welded on the lower vertical pipe 11 and inserted in the vehicle beam 3. Item [ 26 ] is a manual lock block pin to lock the turning block [25] when the device is deployed. When the device is produced into a large or small wheel vehicle, the steering block (25) can also be replaced by a common vehicle, the structure that the vehicle beam and the vertical pipe are directly welded can be realized, and when the detachable hinge piece (24) is detached in use, objects can be stored in the beam cavity of the vehicle beam (3), such as a small tool bicycle raincoat and the like.

Fig. 6, 7A, 7B and 8 are structural views of a steering block (25), a beam (3) and a detachable hinge part (24) of the folding type touring bicycle, wherein the steering block is shown as the 25 in fig. 6, a double-dot chain line is the position of the beam (3) in a box body, and fig. 7 is a view of the beam, wherein the view of fig. 7A is a front view of the beam, the view of fig. 7B is a top view of the beam, a reinforcing steel sleeve is welded on the head of the beam, and the tail of the beam is cut off by an oblique angle of 5-15 degrees, so that the beam (3) deviates from the rear wheel and the front and rear wheels (4) in folding and is superposed into a character shape. Fig. 3 is a structural view of a detachable hinge (24) for fastening a vehicle beam (3) and a steering block (25) by a composite bolt assembly, and fig. 32 is a lock shaft bolt. And (33) is a shaft stop positioning pin welded on the gasket.

Fig. 9 is a structural view of the foot shaft part of the tripod (5) of the folding touring bicycle device according to the invention.

As shown in the figure, when the device is folded, the lower support rod (31) can be forced, the steel ball (27) presses the lock pin (19) to retreat, so that the beam supporting piece (30) can automatically support the beam (3) when the beam (3) is bounced off the beam supporting piece (30) and unfolded, the lock pin (19) can lock the beam (3), the drum-shaped top sleeve is shown in the figure (28), and the top beam piece is shown in the figure (29).

Fig. 10, fig. 11 and fig. 12 are structural views of a lock seat rod (35), an auxiliary steam cylinder structure and a foldable stay rod (38) of a tripod (5) of the folding type touring bicycle device according to the invention.

As shown in figure 10, figure 10A is a front view, figure 10B is a left view, when the device is folded, a cam block (39) on a foldable stay rod (38) in figure 12 forces a push block (34) to pull a lock pin (36) out of a hole of a seat rod (35), the lower end of a seat tube vertical tube (37) is provided with an air nozzle, figure 11 and the seat rod (35) form a spare air cylinder device, a leather tube used by an air cylinder is stored in a beam cavity, the foldable stay rod (38) in figure 12 can be folded into two sections, a transverse pin is welded in the middle, a steel sleeve (40) can be used for replacing a tricycle chain in a hinge trial production, and a steel sleeve (41) is a quick lock and is pushed by a spring.

Fig. 13A and 13B are views showing the structure of the pedal (7) of the foldable touring bicycle according to the present invention. Fig. 13A is a front view, and fig. 13B is a plan view.

As shown in the figure (44), a lock foot shaft bolt piece is used as a folding base shaft of a pedal rod (43) and a shaft stop screw sleeve (45), and a locking bolt (32) forms a composite bolt group. When the double-button piece (20) is pressed down, the built-in lock pin releases the rear pedal rod (43) and rotates 180 degrees reversely to fold the pedal into the box, the spring top pin is shown in the figure (36), and the foot shaft is shown in the figure (46).

Fig. 14 is a view showing the structure of the flywheel (6) of the folding type touring bicycle device according to the present invention.

If a ratchet wheel (47) is arranged in a disc chuck part (50) of a shaft sleeve, a replaceable small cone (49) is inserted outside, the replaceable small cone (49) is provided with a plurality of spare parts with different tooth numbers for selecting the using speed of the device, and a cover is shown in a figure (48).

Fig. 15 is a view of the trolley of the folding bicycle device according to the invention when the handlebar (1) is attached after folding out the small pulley on the hanger.

FIG. 15, FIG. 16A and FIG. 16B are a front view of a detachable fork cover of the foldable bicycle device for touring of the present invention and a front view of a combined structure of the present invention and wheels, wherein FIG. 16A is a front view and FIG. 16B is a left side view.

As shown in the figure, the lower end of the front fork (8) is sleeved with 2 eccentric fork mouth parts: the fork sleeve can be disassembled (52). The width of the crotch can be increased after reverse installation, e.g., B, B'. When the device is arranged at the front fork opening, the front fork can be assembled on the rear wheel shaft of another front and rear same-vehicle by using the structure after the front wheel is removed, a bowl cover (an inner through hole) of the front fork in figure 17 is provided with a four-bar mechanism part and a workshop reinforcing brace rod, so that the vehicle can be formed into a pair vehicle and a multi-wheel multi-seat vehicle, and [ 51 ] is an inner welding pipe.

The present invention is preferably made of aluminium alloy material or engineering plastic material to further reduce the weight of the vehicle body, and according to the structural characteristics of the present invention, it can also be made into folding sports body-building equipment, children's toy vehicle, after adding floating bag and underwater propeller, it can be changed into water bicycle, and after adding coloured drawing assembly instruction, the vehicle parts can be packed into bulk parts, it can be made into similar building block type toy baby carriage.

Claims

1. The bicycle device can be folded into a box shape, particularly can be packed into a travel box after being folded to be carried for travel, and is provided with a handlebar [1], a bicycle core vertical pipe [2], a bicycle beam [3], wheels [4], a tripod [5], a flywheel [6], pedals [7] and a front fork [8] which are characterized in that:

a, two handles [11] of the handlebar [1] are inserted in a U-shaped pipe of a handle seat [12] and can rotate.

b the vertical tube (2) of the vehicle core is divided into an upper vertical tube (15) and a lower vertical tube (16), the two tubes are connected by a spring chain (9) in a pulling way,

c, the front section of the vehicle beam [3] is provided with a steering block [24] and a detachable hinge [25] and is also provided with a structure directly welded with a vertical pipe of the vehicle core,

d the wheel [4] has a structure that the front wheel and the rear wheel have the same wheel diameter and also has a structure that the front wheel is small and the rear wheel is large,

e the tripod (5) can be folded along with the clothes rack, the saddle, the clothes rack and the vehicle beam of the device are locked when the device is unfolded,

f the ratchet wheel (47) of the flywheel (6) is arranged in the hub faceplate part (50), a small replaceable toothed disc (49) is tightly inserted outside,

g, one pedal of the pedals [7] can be folded into the box body,

h the front fork [8] can be assembled in multiple vehicles by using the structure of the detachable fork sleeve [52 ].

2. The device as claimed in claim 1, wherein the lower ends of the two handles (11) are oppositely bent by an angle of 10-18 degrees, and when the A position of the handle seat (12) is provided with a shift spring, the button (14) on the cross pin of the U-shaped pipe is pressed, so that the two handles can be automatically folded immediately.

3. The device according to claim 1, characterized in that the upper vertical pipe (15) and the lower vertical pipe (16) are combined by a tenon (17) and a connecting column (18), and the lock pin (19) is locked.

4. The device as claimed in claim 1, wherein the rear part of the vehicle beam (3) is cut off with an oblique angle of 5-15 degrees in the longitudinal position, when the device is folded, the device is folded with the wheel (4) in a zigzag manner, when the front section of the device is structured by a detachable hinge (24) and a steering block (25), the designed steering angle between the steering block and the vehicle beam is increased, and the device can be folded into a minimum box body with the width equal to the wheel diameter of the rear wheel by a structure with the smaller front wheel and the larger rear wheel.

5. The device according to claim 1, characterized in that the tripod (5) consists of a foldable strut (38) folded into two sections, a lower strut (31), a seat post riser (37) provided with a cylinder, on which a cam (39) is provided which, when the device is folded, can force the push block (34) to pull the latch (36) out of the seat post (35) hole immediately, the lower strut forces the ball (27) to return the latch (19) and the beam springs away from the rest (30)

6. Apparatus according to claim 1, characterised in that the interchangeable small cone (49) has several spare parts with different number of teeth.

7. The device according to claim 1, characterized in that the pivot bolt (44) doubles as a turning base for the foot lever (43).

8. The device according to claim 1, characterized in that the detachable fork sleeve (52) is fitted over the fork to increase the width of the fork end, the bowl cover of the fork being fitted with the four-link mechanism parts when assembled in a vehicle.

9. A removable hinge (24) according to claim 4 and a bolt member (44) according to claim 7, both being secured by a compound bolt arrangement plus a locking bolt (32).

10. The device as claimed in claim 1, wherein the foldable touring bicycle, the foldable sports fitness equipment children toy baby carriage, the large and small wheelers, the building block toy baby carriage with colorful assembly specification and the water bicycle with floating bag and underwater propeller can be made of common materials, aluminum alloy and engineering plastics.