DE4139725A1 - Double wheels for motorcycles - involve fluid activated by spring pressure and connecting both fork arms producing even wheel pressures on ground in each travel position - Google Patents
Double wheels for motorcycles - involve fluid activated by spring pressure and connecting both fork arms producing even wheel pressures on ground in each travel positionInfo
- Publication number
- DE4139725A1 DE4139725A1 DE19914139725 DE4139725A DE4139725A1 DE 4139725 A1 DE4139725 A1 DE 4139725A1 DE 19914139725 DE19914139725 DE 19914139725 DE 4139725 A DE4139725 A DE 4139725A DE 4139725 A1 DE4139725 A1 DE 4139725A1
- Authority
- DE
- Germany
- Prior art keywords
- wheel
- wheels
- telescopic
- pressures
- motorcycles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
- B62K5/10—Cycles with handlebars, equipped with three or more main road wheels with means for inwardly inclining the vehicle body on bends
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B11/00—Units comprising multiple wheels arranged side by side; Wheels having more than one rim or capable of carrying more than one tyre
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K25/00—Axle suspensions
- B62K25/005—Axle suspensions characterised by the axle being supported at one end only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K25/00—Axle suspensions
- B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
- B62K25/06—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2210/00—Detection or estimation of road or environment conditions; Detection or estimation of road shapes
- B60T2210/10—Detection or estimation of road conditions
- B60T2210/13—Aquaplaning, hydroplaning
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Cycles, And Cycles In General (AREA)
Abstract
Description
Bei Automobilen wurden Zwillingsräder an den Vorderachsen vor Jahren mit Erfolg bei Aquaplaning versucht. Zwillingsräder an Einspurfahrzeugen müßten auch solche Vorteile, u. a., bringen. Da bei Kurvenfahrten dieser Fahrzeuge aber starke Schrägneigungen nötig sind, würde das in der Kurve außenliegende Rad je nach Neigung der Maschine einen immer geringeren Druck auf den Boden ausüben und könnte gar vom Boden abheben, wenn beide Zwillingsräder auf einer Achse liefen. Deshalb muß jedes Rad seine eigene abgefederte Achse besitzen (Fig. 1). Dies ist der wesentlichste Punkt dieser Idee.In automobiles, twin wheels on the front axles were tried successfully in aquaplaning years ago. Twin wheels on single-track vehicles should also bring such advantages, among other things. However, since these vehicles require strong inclinations when cornering, the wheel on the outside of the curve would exert less and less pressure on the ground, depending on the inclination of the machine, and could even lift off the ground if both twin wheels were running on one axle. Therefore each wheel must have its own sprung axle ( Fig. 1). This is the main point of this idea.
Die beste Lösung wäre, wenn in jeder Fahrlage jedes einzelne Rad den gleichen Druck auf den Erdboden ausüben würde. Dies wird entweder durch eine Flüssigkeit erreicht (Fig. 7), die von einem Teleskoprohr zum anderen durch eine rohrartige Verbindung fließen kann, denn in Flüssigkeiten pflanzen sich Drücke gleichmäßig fort. Der gleiche Effekt kann, wie in Fig. 8 gezeigt, auch durch eine starre mechanische Verbindung erreicht werden. Hier greift ein mittig liegendes Zahnrad (Z) in eine Zähnelung im inneren oberen Teleskoprohr ein, und zwar durch eine kleine zum Zahnrad gerichtete Öffnung im oberen äußeren Teleskoprohr. Im Prinzip erreichen beide Lösungen den gleichen Zweck, nämlich die in jeder Fahrlage stets gleichen Raddrücke jedes der beiden Zwillingsräder auf den Erdboden.The best solution would be if every single wheel exerted the same pressure on the ground in every driving position. This is achieved either by a liquid ( Fig. 7), which can flow from one telescopic tube to another through a tube-like connection, because pressures propagate evenly in liquids. The same effect can, as shown in Fig. 8, also be achieved by a rigid mechanical connection. Here, a centrally located gear (Z) engages a toothing in the inner upper telescopic tube, namely through a small opening facing the gear in the upper outer telescopic tube. In principle, both solutions achieve the same purpose, namely the wheel pressures of each of the two twin wheels on the ground, which are always the same in every driving position.
Es ergeben sich folgende Vorteile dieser Konstruktion:The advantages of this construction are as follows:
- 1. Größere Sicherheit bei Aquaplaning (Fig. 1 und 7 und 8);1. Greater safety in aquaplaning ( Fig. 1 and 7 and 8);
- 2. bessere Sicherheit bei Kurvenfahrten (Fig. 3 und 7 und 8);2. better safety when cornering ( Fig. 3 and 7 and 8);
- 3. desgleichen auf schräger Fahrbahn (Fig. 4);3. the same on an inclined roadway ( Fig. 4);
- 4. sicherer und komfortabler bei Straßenunebenheiten (Fig. 5);4. safer and more comfortable on uneven roads ( Fig. 5);
- 5. leichtere Lenkbewegungen im Stand und langsamer Fahrt gegenüber einem Einzelrad mit nötiger voluminöserer Bereifung, denn beide Zwillingsräder rollen bei einer Lenkbewegung auf dem Boden ab (Fig. 6).5. easier steering movements when stationary and slow travel compared to a single wheel with the necessary more voluminous tires, because both twin wheels roll on the ground during a steering movement ( Fig. 6).
Bei einer Ausführung der Radaufhängungen mit Schwingarmen statt der Teleskoprohre ergeben sich im Prinzip gleiche und nur abgewandelte Bauarten, in Fig. 2 nur angedeutet.When the wheel suspensions are designed with swing arms instead of the telescopic tubes, in principle the same and only modified designs result, only indicated in FIG. 2.
Claims (2)
daß ein jeder Teleskoparm (Fig. 1) einer Radgabel eine Radachse mit einem Laufrad trägt und daß der untere innere Teleskoparm (T₂, Fig. 1 und 8) im äußeren Teleskoparm (T₁, Fig. 1 und 8) abgefedert wird, und d. h., daß jedes Zwillingsrad für sich allein abgefedert ist;
bei einer Ausführung mit Schwingarmen an Stelle der Teleskoprohre ergeben sich ähnliche und im Prinzip gleiche Bauarten.1. "Twin wheels" or "double wheels" on single-track vehicles, for. B. on motorcycle front or rear wheel forks, characterized in that
that each telescopic arm (Fig. 1) carries a wheel fork a wheel axle with a wheel and that the lower inner telescopic arm (T₂, Fig. 1 and 8) in the outer telescopic arm (T₁, Fig. 1 and 8) is cushioned, and that, that each twin wheel is cushioned by itself;
In the case of a design with swing arms instead of the telescopic tubes, there are similar and in principle the same types of construction.
- a) die oberen Anschläge der Federn in den oberen Teleskoprohren sind nicht fixiert, wie in Fig. 1 gezeigt, sondern sie bestehen aus in diesen Rohren gleitenden Körpern (K), und die darüberliegenden Räume sind mit Flüssigkeit - z. B. Bremsöl - gefüllt und kommunizieren durch eine rohrförmige Verbindung miteinander, schraffiert in Fig. 7; das gewünschte Ergebnis ist, daß die Drücke beider Räder auf die Fahrbahn stets gleich groß sind, gleichgültig, welche Schräglage die Maschine einnimmt, denn in Flüssigkeiten pflanzen sich Drücke gleichmäßig fort;
- b) um diese gleichmäßige Übertragung der Federdrücke in jeder Stellung des Fahrzeugs auf jedes Rad der Zwillingsräder zu erhalten - wie unter a gezeigt -, können auch mechanische Übertragungen benutzt werden, z. B. durch ein zentralliegendes Zahnrad (Z) und je einer innenliegenden Zähnelung der oberen inneren Teleskoprohre, in die das Zahnrad eingreifen kann (Fig. 8); hierzu ist eine kleine, nach innen liegende Öffnung im oberen äußeren Teleskoprohr nötig; das Ergebnis dieser Bauart entpricht dem des unter a beschriebenen.
- a) the upper stops of the springs in the upper telescopic tubes are not fixed, as shown in Fig. 1, but they consist of bodies sliding in these tubes (K), and the spaces above are filled with liquid - e.g. B. brake oil - filled and communicate with each other through a tubular connection, hatched in Fig. 7; the desired result is that the pressures of both wheels on the road are always the same, regardless of the inclination of the machine, because pressures propagate evenly in liquids;
- b) in order to obtain this uniform transmission of the spring pressures in every position of the vehicle on each wheel of the twin wheels - as shown under a - mechanical transmissions can also be used, e.g. B. by a central gear (Z) and an internal toothing of the upper inner telescopic tubes, in which the gear can engage ( Fig. 8); this requires a small, inward opening in the upper outer telescopic tube; the result of this design corresponds to that described under a.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914139725 DE4139725A1 (en) | 1991-12-02 | 1991-12-02 | Double wheels for motorcycles - involve fluid activated by spring pressure and connecting both fork arms producing even wheel pressures on ground in each travel position |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914139725 DE4139725A1 (en) | 1991-12-02 | 1991-12-02 | Double wheels for motorcycles - involve fluid activated by spring pressure and connecting both fork arms producing even wheel pressures on ground in each travel position |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4139725A1 true DE4139725A1 (en) | 1993-06-03 |
Family
ID=6446097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19914139725 Withdrawn DE4139725A1 (en) | 1991-12-02 | 1991-12-02 | Double wheels for motorcycles - involve fluid activated by spring pressure and connecting both fork arms producing even wheel pressures on ground in each travel position |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4139725A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2733198A1 (en) * | 1995-04-21 | 1996-10-25 | Peugeot Motocycles Sa | Front wheel suspension for motorcycle |
US7073806B2 (en) * | 2003-06-03 | 2006-07-11 | Piaggio & C. S.P.A. | Three-wheel rolling vehicle with front two-wheel steering |
-
1991
- 1991-12-02 DE DE19914139725 patent/DE4139725A1/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2733198A1 (en) * | 1995-04-21 | 1996-10-25 | Peugeot Motocycles Sa | Front wheel suspension for motorcycle |
ES2130931A1 (en) * | 1995-04-21 | 1999-07-01 | Peugeot Motocycles S A | Front wheel suspension for motorcycle |
US7073806B2 (en) * | 2003-06-03 | 2006-07-11 | Piaggio & C. S.P.A. | Three-wheel rolling vehicle with front two-wheel steering |
CN1572644B (en) * | 2003-06-03 | 2012-05-09 | 皮亚乔公司 | Three-wheel rolling vehicle with front two-wheel steering |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |