DE1965110U - FOLDABLE OR FOLDING BIKE. - Google Patents

Description

Patent attorney Dipl.-lng. Th. Hoefer

This * act, Z. 232o / 66

RA.647 481 * 10.1266

6/4

48 Bielefeld, the

December 9, 1966

Kreuzstrasse 32

Telephone 61836 Telex 9-32 449 Bank account: Commerzbank AG, Bielefeld Postal checking account: Hanover Office No. 68928

Rapier - 3? Ahrradfabrik G-ebr, Illermann,

Gohfeld / Westf,

Bicycle "

The fire refers to a bicycle with a divisible frame, its two Eahiaenhälften in the area of one or more Cross tubes can be folded together by means of an articulated joint

are*

Foldable or collapsible bicycle frames are known where in the area of the lower Eahiaen tubes (cross tubes)

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Joints are arranged like hinges * around which the folding or Folding movement can be carried out * These joints "or their arrangement are in different Looks from lachteil · There such hinges in the Si-separation area are exposed to a "special load, they must have a stable construction" This stability however, it has connections that are more complex and proportionate sig large construction, which are bulky and annoying · With a lighter construction, none is required Security more available.

Furthermore, it occurs with the known movable parts of the Haehteil ₃ that they are collapsible, but not in every lalle can be dismantled »

The object of the new rank is ₃ $ to create a two-tier! Bicycle that is foldable while avoiding the previous power cables and disassembled, while having a great stability in Verbindungsbereieh with a simple design.

According to the innovation, a bicycle with a divisible Eahmenj whose two frame halves in the area of one or several cross tubes are collapsible coupled by means of an articulated connection, the cross tube in the separation area outside of its tubular profile connected in a hinge-like manner on one side and by means of the opposite side Screw connection fixable provided.

In a preferred embodiment, the aligned End faces of the cross tube with attached

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-4-welded G-joint plates can be equipped with a large contact surface ₄ whereby the joint plates outside the cross tube can be provided on one side with interlocking joint rollers or the like that are pivotably connected to one another by means of a hinge pin.

The hinge pin can be detachably stored in the hinged rollers of the hinged plates by means of a G-ewinüe or the like. The joint plate areas opposite the hinge-like connection can be detachably connected to one another by means of a fastening element that can be plugged in and / or screwed in outside the cross-tube profile ι the fastening element can be provided as a threaded bolt with a screw-on hand nut or wing nut or the like.

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-5-The split cross tube can preferably be connected to a form hollow reekeek-shaped cross-sectional shape, wherein the longer side of the Keckeekform can preferably be provided to run parallel to the frame plane.

The bike frame according to the new version shows an isolation * which has been carried out in an expedient manner, preferably on two thirds of the cross tube length near the seat tube is and there are the two cross tube end faces facing each other with a hinge-like connection equipped, on the one hand a simple construction and easy handling and on the other hand is provided with large contact surfaces (pressing surfaces) that the In the (detection area, particularly occurring stresses can be picked up favorably «This consideration of the large contact surfaces gives great stability and still shows

-G- no bulky and disruptive training.

The design of the cross tube with a rectangular cross-sectional shape also contributes favorably to a high level of stability and involves relatively long weld seams _? which leads to a particularly good connection between the cross tube and the joint plates. Thanks to the favorable weld seams and the large contact areas, the bicycle frame according to the invention can be particularly stressed when bending in a vertical plane. "

Furthermore, the bicycle frame can be dismantled and thus opened in a few simple steps Little hardly adaptable to accommodate.

In a further feature of the furnace, the rear wheel strut can be designed as a luggage rack and at the same time angled

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-6agebogen on one side of the seat tube and with your other End in the area of the rear wheel bearing by means of welding or "to be connected like that" Such a training gives the bike an additional stability and the G-epaeolo carrier Despite the relatively light construction, great durability and long service life *

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The drawing shows an embodiment of the inflation rate * It shows %

! ig · 1 is a side view of a collapsible and disassemblable bike frame *

lig. 2 is a plan view of the same bicycle frame,

]? ig · 3 is a side view of the split cross tube with Yerbing joint according to section "A" in Pig. I,

Fig. 4 is a plan view of the same connecting hinge with split cross tube and

I ¹ Ig. 5 is a front view of the same connection joint in the unfolded state.

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In a known way, a bicycle has a frame 1.0, which has a "front control tube 11 with a downwardly widening front fork 12; a parallel to the Control tube 11 extending seat tube 13 is by means of a The cross tube 14 is rigidly connected to the control tube 11. in the the lower end of the seat tube 13 is a bottom bracket 15, from which the rear fork 16 extends parallel to the running plane of the bicycle. A rear strut 17 shows an angled training * with a rounded apex, with one leg parallel to the rear fork and the other leg runs approximately parallel to the seat tube 13. This rear wheel strut 17 serves on the one hand for support of the seat tube 13 opposite the "rear fork 16 and is on the other hand provided as a luggage carrier 18, since the rear wheel strut 17 from its attachment point on the seat tube 13 as two parallel Eohr-

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bracket 17a, 17b is formed, which sicli jeifeils in the camp
19 for the rear wheel axle meet with the rear wheel fork 16,
In the support area for the luggage od, the like. The rear wheel strut 17 shows several of the two. Eohrbügel 17a, 17b connecting cross struts 2o *

The cross tube 14 preferably has a right in cross section; oval hollow shape and is supported at the end by Yer- ^; Strengthening ribs 21 welded to the head tube 11 and to the seat tube 13 j the rectangular cross-sectional shape advantageously brings relatively long weld seams with \

itself, whereby a large area | Connection and great stability is given. :

This cross tube 14 shows its subdivision approximately into two
Third of its total length, in the area near that ^;

Seat tube 143 lies · This division results in functional;

massive way two equally large frame and thus bicycle parts «

The separate end faces of the cross tube 14, which are directed towards one another, are provided with welded-on joint plates 22, 23 provided 5 the rectangular cross tube 14 is so provided that the longer tube sides are vertical, that is run parallel to the frame plane 5 thereby becomes a larger one Stability against the stress of the knee is achieved. Furthermore, there are again relatively long weld seams in the connection area with the hinge plates 22, 23, with the connection plates. 22, 23 a large area Point of contact and connection.

The joint plates 22, 23 have at one end (parallel to the vertical transverse pipe plane) several in a certain way Distance superimposed hinge rollers 24 which intermesh and articulated with a hinge pin 25

-limit connected to each other »This cylindrical hinge pin 25 engages through the loop-like hinge rollers 24 and has a screw head 25a | at one end below this screw head 25a, the hinge pin 25 has a threaded projection 25b _? which can be screwed into the upper hinge roller 24a equipped with an internal thread. The screwed in and tightly tightened hinge pin 25 represents a secure connection between the two hinge plates 22, 23 and can be released quickly and easily at any time, resulting in two separate frame halves loa _s lob.

The areas of the hinge plates 22 opposite the hinge rollers 24 _? 23 each have a connecting tab 26, 27 j the connecting tab 26 is equipped with a central threaded hole 26a and the connecting tab 27 has a central one with the threaded hole

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26a in the unfolded state of the joint plates 22, 23 open a covering elongated hole 27a, for connecting the G joint plates 22 _? 23, a threaded bolt 29 or the like is screwed into the threaded bore 26a and provided with a lock nut 3o that presses against the connecting tab 26 to prevent automatic loosening due to vibrations or the like - Or wing nut 28 is provided with shoulder 28a, which establishes a firm but detachable connection between the two frame halves loa, lob to be replaced with a new one.

The lock nut 3o and the approach 28a of the hand or wing nut 28 achieve a large flat pressure between ^.

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-13-the two joint plates 22 _? 23j so that's a good one

Concern and secure connection "of both ropes guaranteed is"

By simply loosening the Handel nut 28 from the threaded pin 29 and swiveling the threaded bolt 29 out of the long-Ιο cn 27a, the fixed connection of the divided cross-tube 14 can be canceled and both cross-tube parts can be pivoted around the hinge pin 25 through their articulated connection, namely by ISo ⁰ ^ so that the two frame parts lie on top of each other to save space *

The pivot point and the connection point of the two
Frame halves loa _s lob are outside the cross tube
14 * As a result, there is a large contact surface between these two points - formed from the hinge plates 22 * 23 - which advantageously results in a displacement
or twisting of the front part of the frame in relation to the rear part of the frame due to sudden stress on the frame

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Io prevents the gel-like connection as well as the Io s- "bar Attachment of the cross tube I4 is simple in structure, safe to use and easy to use. ! The frame can be folded up in just a few simple steps and when the hinge pin 25 is loosened (by unscrewing it from the hinge plate 27), the frame Io is easier Way can be dismantled into two ropes.

Instead of the threaded bolt 29 and the Handel nut 28, a screw can also be used as a fastening element Nut or the like or another detachable fastening means Tor see ♦

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Claims (8)

R A. W k B 1 * 10.12.66 Protection claims 1. Bicycle, with a divisible frame ^ whose two frame halves are coupled in the area of one or more cross tubes so that they can be folded together by means of an articulated connection, thereby marked that the cross tube, which is preferably rectangular in cross-section, is in the region of the separation outside its ear - profiles connected in a hinge-like manner on one side and on the opposite side is held securely in place by means of a screw connection. 2. bicycle according to claim I ^ characterized * that the facing end faces of the cross tube with welded G-joint plates with a large contact area are equipped » 3. bicycle according to claim 1 and 2> characterized in that the hinge plates are on one side outside the cross tube with interlocking pivoting by means of a hinge pin Equipped with non-connected swivel castors or the like are. 4 «!" Bicycle according to claims 1 to 3 * characterized in that that the hinge pin by means of thread or the like. releasably mounted in the hinge rollers of the G-elenfcplatten is" 5 · Bicycle according to claims 1 to 4j characterized in that} that the hinged plate areas opposite to the hinge-like connection are by means of a outside of the cross tube prefile and / or -17- screw-in fastening element, releasable with one another connected goals are seen 6 # bicycle according to claims 1 to 5 # characterized! that the fastening element is preferably a threaded bolt ο »like. with screwable hand or Wing nut or the like «is provided. 7 # bicycle according to claims 1 to β _}, characterized in that the longer side of the rectangular cross-sectional shape of the cross tube is provided to run parallel to the frame plane. 8.! Bicycle according to claims 1 to 7 * characterized in that that the identification line of the cross tube is about two thirds of its total length close to the seat tube is provided" -18- 9 · bicycle, in particular according to claim 1, characterized gekennzeiehnet ₅ that formed as a luggage rack chain stay within the Kahmenebene angularly bent and provided od at their free ends by means of welding or the like * "at the seat tube and in the region of the rear bearing is mounted. 1 o.! Bicycle according to claim 9j, characterized in that the rear wheel strut is formed from two tubular bends running parallel next to one another, which run from the fastening point on the seat tube approximately parallel to the rear wheel fork and via a rounded end approximately parallel to the seat tube, in the C-baggage receiving area by means of Cross struts are formed connected to one another ». ..