WO1983003232A1

WO1983003232A1 - Foldable bicycle which can be carried in a bag

Info

Publication number: WO1983003232A1
Application number: PCT/HU1983/000012
Authority: WO
Inventors: Talalmanyokat Értékesito Vallalat Licencia
Original assignee: Csizmadia, Lajos
Priority date: 1982-03-16
Filing date: 1983-03-16
Publication date: 1983-09-29
Also published as: US4598923A; EP0103609A4; DE3376973D1; HU185269B; EP0103609A1; EP0103609B1; JPS59500465A

Abstract

The foldable bicycle is comprised of a frame divided into three hollow parts which are mutually hinged. In the front part, the front wheel, the fork and the handlebar can be folded and stored therein. In the central part the saddle and its support shaft can be slid down, and in the rear part can be stored the rear wheel, the chain, the crank gear and the pedals. When folded up the three parts of the frame have the shape of the storing bag. When the bag is opened the elements of the bike can be unfolded and locked into a riding position.

Description

TASCHEtJ BICYCLE

Technical field

The invention relates to a pocket bicycle, which, in accordance with its generally known use as a bicycle, is a two-wheel, single-lane road vehicle with leg drive and can be folded out of handbag size to be a handbag.

State of the art

Bikes of this type are particularly required to be operationally reliable, to meet the requirements of traffic safety, to be put into operation quickly and to be put out of operation. It is also important that they are small, take up little space and everywhere, e.g. in the apartment, possibly under a piece of furniture or even under the bed or in the front room, if necessary at the workplace, next to the

Workbench or below can be accommodated without them - with their protruding parts, e.g. Pedals etc. - the passing. * Can hurt people. Furthermore, it is required that they can be carried in the folded state in the hand in mass transport without hindering anyone or causing injuries or an accident, furthermore that they are light and their carrying does not require any great physical effort , whereby the construction elements are always connected and the commissioning does not require any special expertise.

None of the bicycles manufactured to date can fully meet these requirements due to their shape, size, weight and design. The current shape and design of the bikes can look back almost a century. They consist of a frame which is welded together from a thin-walled steel tube, a fork, a rear wheel driven with pedals by chain transmission and a free-running front wheel controllable by a handlebar, saddles, brakes and auxiliary devices. Depending on the shape of the frame, these bicycles can be men's bicycles in which the saddle and the handlebar are connected horizontally by a tube, women's bicycles in which there is no horizontal tube and collapsible bicycles used by men and women can also be used and after use in the interest of the small space required at a certain point, usually at a lower point of the frame, can be disassembled or articulated by rotating the wheels towards one another. Among these bicycles there are also those that are made for races that are light, but whose dimensions correspond to those of the previous ones. The common feature of these bicycles is that they take up a lot of space, are heavy, they are cumbersome to store and they are not portable in a pocket.

The manufacturers of the well-known and commercially available bicycles are trying to eliminate the disadvantages described by means of various construction solutions. Smaller wheel diameter applied, the frame and the fork construction made from a light metal tube, and the carrying is to be carried out. the removal of the wheels and the folding of the pedals are facilitated. There are also known bicycles that can be completely disassembled and placed in a backpack or in a carrier or storage box made for it.

OMH f Although these solutions make the bicycle suitable for many purposes, they do not solve the problem that the residents of housing estates store their bicycles in a suitable manner, for example in their apartment, or that the children take them easily with them in a short time and can put together, and that such bicycles can then be used safely, since the previous bicycles are so heavy that you can not carry them up high in the apartment, since there is either no space for storing bicycles or there is very little space , but storage is not safe either. They cannot be transported by mass transport for excursions, they take up too much space in other means of transport and their transport is very expensive, and they cannot be taken to work because of their large space requirement, which is why their use is restricted in many places .

The invention is therefore based on the object of eliminating the above-mentioned disadvantages of the earlier constructions and of creating a collapsible bicycle which, without disassembling the frame and the entire construction into pocket shape and size, folds together in an articulated manner and out of the Position of a portable pocket bicycle can be transformed in a short time with simple, no specialist knowledge handles to a two-wheeled, single-track, safely usable means of transport with leg drive, without having to search for the position and the connections of the components or that it would have to be assembled from separate parts.

_ O PI Presentation of the invention

According to the invention, the object was achieved in that the elements of the pocket bicycle are designed in an articulated manner and can be pushed into one another or rotated and securely locked, which can be enclosed by a special multi-part hollow shell construction frame, while the cyclist has several Options to adjust the bike according to its size. In order to comply with the safety requirements, the bicycle must be equipped with brakes, which act on the rear wheel and the front wheel and can be actuated by hydraulic Bowden cable or by rods, as well as auxiliary devices, e.g. a front lamp and a rear taillight, which also represents the handle. The axis of the drive pedal is designed so that the drive crank can be screwed or countersunk into the space provided for this purpose in the shell construction frame, while the foot part of the pedal can also rotate. The seat post can be pushed into the frame and through. the loosening of the joint-like lower part of the saddle can be fitted into the frame. After turning the rear wheel, it can be rotated together with the chain wheel, the chain and its bracket-like support in the rear part of the frame together with the wheel protection plate. The components of the pocket bicycle snap into place in the folded state, so they are not damaged when worn or cannot get into each other.

Brief description of the drawings

Further details of the invention are described in more detail below in connection with the accompanying drawings, which represent an advantageous embodiment

^ δ ^ E

OH put. The drawings show:

Fig. 1 is a side view of the invention

Pocket bike in (open) condition of use,

2 shows the same side view of the pocket bicycle as in FIG. 1, the front wheel being rotated into the frame space,

3 shows a side view of the pocket bicycle, the rear wheel being turned into the rear frame part,

4 shows a side view of the pocket bicycle, the rear frame part being rotated and connected to the front frame part,

^• = ig a side view of the pocket bicycle ^* wherein the handlebar in the front frame member rotates ge and hydrogenated in its holder, the actual Sattelstaπge inserted,

Fig. 6. the pocket bike in - by turning the saddle holder to the front frame part - pocket-like folded and portable condition, in

Shown side view,

6 / a the front view of the pocket bicycle in Fig. 6th

Fig. 7 along the construction parts of the handlebar

_* their longitudinal axis,

8 shows a cross section over the handlebar along the line AA in FIG. 7, O

Fig. 9 a front view of the driver,

Fig. 10 the consecutive details of the connection of the handlebar and the handlebar in the section along line 3-3 in Fig. 9,

Fig. 11 the connection of the rear frame part and the bike-holding console, from below the view light,

Fig. 12 illustrative sketch of the pedal drive.

Preferred embodiment

The front frame part 1, which is shaped like a recess or hollow, is a main element of the pocket bicycle, with which the saddle holder 2 is rotatably connected by a bolt 4 and the rear frame part 3 rotatable about a bolt 5 (FIG. 1). The lower part 8 of the steering shaft is mounted in the front frame part 1, and there is also the housing 6 of a lower ball bearing 10 (FIG. 7) and the housing 11 of an upper ball bearing 7, which pass through, upper and lower Circlips 12 and 13 are secured. The steering shaft lower part 8 holds a nut 14 in the position set by the upper ball bearing 7. The steering sheep upper part 9 has an articulated connecting structure 15, which facilitates the accommodation of the handlebar when folded and is located in the steering sheep lower part 8, the conical end 16 of which is tightened with a conical nut 17. The handlebar 18 on which the handles 19 and the brake arms 20 can be found is located on the upper steering shaft part 9 (FIG. 9). By turning the arm 22 of an eccentric 21, the upper steering shaft part 9 is attracted to the central part of the handlebar 18 (FIG. 10). The handlebar 18 is secured against rotation by conical locking pins 23 which are moved by a pull rod 24 and which engage in the bores 27 and 26. The eccentric 21 also actuates a conical nut connection 17 by moving arm 22 and via a rod 25 (FIG. 7, 10).

On the steering shaft lower part 8 there is a locking band 29 which can be actuated by a bolt 28, in which a mandrel 32 with a pulling fork 30 is pushed against a spring 31 into a bore 33 (FIG. 8). The locking band 29 / a belongs to the fork 34, in which the front wheel 35, which is freewheeling on the axle 36, is located (FIG. 1).

The saddle holder holding the seat shaft 37 in a ^* for suitable pulling tape 60, and the shaft at the end of 37 Sattel¬ the saddle 39, which can be adjusted with a hinge 38 is located (Fig. 1). The saddle holder is held in connection with the rear frame part 3 by spring securing pins 40. In the rear frame part 3, the drive axle 42 is housed and mounted, at both ends with a drive crank 44 and a pedal 45 and the drive sprocket 43. In the rear frame part 3, the bracket 17 holding the rear wheel 48 can be pivoted on the bolt 50, where the The rear wheel 48 is connected to the bracket 47 by a spring locking pin 51 which engages in the arm-like attachments 47 / a of the bracket and is held in position (FIG. 11). In the bracket 47 rotatable about the bolt 50, the rear wheel 48 is accommodated with its axis 49 and with the curved chain wheel 53, which drives the drive chain 46 via the chain tensioner 52 in the generally known manner.

^« ΕE

OMPI The two drive pedal arms 44 located near the drive chain wheel 43 can be rotated after loosening a clamp 64 and brought into the groove 62 by turning the pedals 45 (FIGS. 1 and 12). The solar cells 66 on the side of the front frame part 1 charge the electric battery.

The pocket bike, whose construction has been described in detail, works as follows:

In operating state - i.e. when open - it can be used like the well-known bikes, i.e. one sits on the saddle 39, grips the handle 19 with both hands, leans forward a little and positions the pedal 45 from the vertical in the direction of travel 54, then the pedal 45 is pressed with the foot, and the Cyclist pushes off with the other foot and can drive by turning the pedal 54 counterclockwise - see FIG. 1.

The bicycle can be pulled by pulling the brake arm 20 or holding it back or turning the pedal 45 counter to the direction of travel, i.e. be stopped by so-called counter braking. Decommissioning or

The pocket bike is folded as follows:

The pocket bicycle is placed vertically, the pulling fork 30 is pulled backwards with one hand and thus unlocks the wheel fork 34, and rotated together with the front wheel 35 in the direction of arrow 55 into the space of the housing-like front frame part 1 (FIG. 1 and 2).

Then the spring securing pins 51 from the attachments 47 / a of the bracket 47 must be on the rear frame part 3

O;,: F ^" be released, and then the bracket 47 together with the rear wheel 48, the axle 49 and the driven sprocket 53 is rotated in the direction of arrow 56 around the bolt 50 in the rear frame part 3 (FIGS. 1 and 11).

As a next step, the spring locking pin 40 is pressed out or released and the rear frame part is rotated around the bolt 5 in the direction of arrow 57 next to the front frame part 1 (FIG. 3).

Then the handle 22 of the eccentric 21 is rotated, the conical locking pins 23 are removed from the bores 26 and 27 (FIG. 10), while the cone nut connection 17 is also loosened with the rod 25 (FIG. 7) by rotary movements around the joint 15 the steering shaft upper part 9 and the handlebar 18 are rotated in the direction of the longitudinal axis of the front frame part 1 then in direction 59 in the front frame part 1 according to FIG. 4 and into the pocket position according to FIG. 5.

After folding together, the saddle 39 is rotated about the joint 38 and by loosening the pull strap 60 (FIG. 1) the saddle shaft 37 is pushed in the direction 57 into the saddle holder 2. Then the saddle holder 2 is rotated in the direction 61 and fitted into the front frame part 1, as shown in FIGS. 5 and 6.

The pedal 45 is turned, the drive crank 44 is accommodated in the space 62 located in the rear frame part 3 and the pocket bicycle thus comes into a pocket-like, folded, portable state. Carrying is made easier by the handle 63, which in the operating state serves as a supplementary device since it can be used as a rear light (FIG. 6).

θMP When starting up, the above sequence must be reversed. With the solar cells 66, the electric battery of the bicycle can be continuously supplied, from where the energy supply of the structural units - white light, red light - can take place as required.

The pocket bike can be made for children in the usual, known and commercially available sizes and for adults in the usual types of women and men; the length and width dimensions of the front and rear frame parts of these types determine the pocket dimensions which necessarily result from the folding and the reception of the parts.

The pocket bicycle known from the above description of the invention has important advantages over the following:

a) if it is not used and is folded up as a bag, it can be put into operation in a short time,

b) it does not have a spare part that is separate or has no structural connection, which rules out that parts can be lost,

c) it can be produced in chain, toothed V-belt, cardan shaft and curved shaft versions,

d) there are no special maintenance requirements that deviate from the usual bicycles, the assembly does not require more specialist knowledge than is required for them, e) when folded, it takes up little space,

f) it is light and portable, even in mass transportation,

g) it can be accommodated and used in an apartment, in the office, at the work place without any risk of accident or with less danger than before,

h) it has simple components,

i) The electrical energy required for the operation of the components can be supplied by solar cells, for which the pocket surface offers a very advantageous possibility of accommodation and lighting.

Claims

PATENT CLAIMS

1. Pocket bicycle, which is suitable for use as a two-wheeled, single-track means of transport with powered drive, characterized in that it has its ^* structural parts, hollow, front, rear and saddle-holding frame parts (1, 3, 2) which can be folded together with the construction parts of the bicycle into a portable bag.

2. Pocket bicycle according to claim 1, characterized g e k e n n ¬ z e i c h n e t that the handlebar and the front wheel

(35) receiving the front frame part (1), the saddle (39) and the adjustable saddle stem (37) receiving the saddle support (2) and the rear wheel (48) together with the drive members receiving hinte ^'re frame part (3) articulated to each other are connected.

3. Pocket bike according to claims * - _τ and 2, characterized in that it is the front frame part

(1), the saddle holder (2) and the rear frame part

(3) has securing pins (5, 40) which are fastened in the articulated state and are suitably provided with a spring construction and which can be released from their locked position for rotation about the joints of the frame structures.

4. Pocket bicycle according to one of claims 1 to 3, da¬ characterized in that the rear wheel (48) in a with the rear frame part (3) via a bolt (50) articulated and rotatable in the cavity bracket (47) is mounted , whose joint-like connection connected to the rear frame part (3) can be locked by a spring securing pin (51) and released from the locked position.

5. Pocket bicycle according to one of claims 1 to 4, characterized in that the axis (42) of the drive sprocket (43) has a connection (64) which is easily detachable for rotating the drive crank (44).

6. Pocket bicycle according to one of claims 1 to 5, characterized in that it has a tensioning device (52) provided with rollers for tensioning the drive chain or toothed V-belt (46).

7. Pocket bicycle according to one of claims 1 to 6, characterized in that it has a gear drive and a drive shaft provided with a detachable claw coupling.

8. Taschenf ahrrad according to one of claims 1 to 7, characterized in that solar cells (66) has auf¬ ^'for the power supply of the units of the Taschenfa rrades supplying electricity supply battery.