EP0702640A1 - Moped with self-supporting frame - Google Patents

Moped with self-supporting frame

Info

Publication number
EP0702640A1
EP0702640A1 EP94919923A EP94919923A EP0702640A1 EP 0702640 A1 EP0702640 A1 EP 0702640A1 EP 94919923 A EP94919923 A EP 94919923A EP 94919923 A EP94919923 A EP 94919923A EP 0702640 A1 EP0702640 A1 EP 0702640A1
Authority
EP
European Patent Office
Prior art keywords
parts
central plate
handlebar
moped
outer chassis
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.)
Ceased
Application number
EP94919923A
Other languages
German (de)
French (fr)
Inventor
Göran ÖLMEFORS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from SE9302094A external-priority patent/SE503115C2/en
Application filed by Individual filed Critical Individual
Publication of EP0702640A1 publication Critical patent/EP0702640A1/en
Ceased legal-status Critical Current

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
    • B62K19/00—Cycle frames
    • B62K19/02—Cycle frames characterised by material or cross-section of frame members
    • B62K19/04—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity
    • B62K19/08—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity made from sheet
    • 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
    • B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
    • B62K11/02—Frames
    • B62K11/04—Frames characterised by the engine being between front and rear wheels
    • B62K11/06—Frames characterised by the engine being between front and rear wheels the frame being of single-beam type
    • B62K11/08—Frames characterised by the engine being between front and rear wheels the frame being of single-beam type the beam being fabricated from sheet metal, e.g. forming fuel tank walls

Definitions

  • the present invention relates to a moped, motor-cycle or similar vehicle with a self-supporting frame consisting of at least three parts, a longitudinal, central plate and two outer chassis parts, which three parts are joined together.
  • motor-cycles or similar vehicles are manufactured with a tubular frame to which the motor and other parts, suspension, steering and some plastic covers, are screwed.
  • the tubular frame is the load- bearing element.
  • the same old method is used as in the olden days in automobile manufacturing in USA, for instance, i.e. a separate frame to which the chassis is bolted, or as in the manufacture of boats, with a plurality of ribs covered with shell plating.
  • a vehicle manufactured in this way becomes expensive at today's level of costs.
  • the invention aims at a solution to these and other similar problems and is characterised in that the central plate continues past and in front of a handlebar pertaining to the vehicle, and that the handlebar is braced also laterally, inside the outer chassis parts, against said parts by means of at least one handlebar section or brace, and that the rear-wheel fork of the vehicle is also secured in the outer chassis parts, which are in turn connected at the rear to the central plate.
  • a moped or motor-cycle provided with such a self-supporting frame requires few parts, has suitable torsional rigidity, suitable section modulus and, not least, an attractive appearance, as well as being inexpensive to manufacture and of high quality.
  • the central plate contains motor, suspension, steering, etc., but is not itself self-supporting although together with the outer chassis parts it forms a self-supporting frame construction supporting the other parts of the moped.
  • the vehicle is provided at the handlebar with one or two handlebar sections or braces, located inside the outer chassis parts and is connected to these, thereby giving the vehicle considerably increased rigidity.
  • the rear- wheel fork is secured in the outer chassis parts, which in turn are connected at the rear to the central plate. This further increases rigidity, for instance between the rear and front parts of the vehicle, giving considerably increased safety.
  • the vehicle is provided with a tank ledge, connected both to the central plate and the outer chassis parts - another measure that increases safety.
  • the three frame parts (out chassis parts and central plate) are bolted together around the entire periphery.
  • the three parts are also held together at, for instance, the motor attachments, pedals and suspension attachments.
  • the outer chassis parts are manufactured by means of compression moulding in one operation, for instance by means of flex-moulding, i.e. in a press having one fixed tool half and one flexible tool half, comprising a rubber half and a rubber membrane against which hydraulic pressure is applied. Pressures of up to 20000 psi are possible.
  • the tool parts in the press may be made of wood, plastic, "kirksite”, aluminium, etc. and are easy to manufacture and to replace. An inexpensive prototype series is easily obtained. Brief description of the drawings:
  • Figure 1 shows a moped with a frame according to the invention, seen from the side, and Figure 2 the same moped, seen from above.
  • Figure 3 shows the reinforcement of the handlebar according to the invention, and Figure 4 the attachment of the rear-wheel fork.
  • Figure 5 shows part of the vehicle in perspective.
  • FIGS 1-2 illustrate a moped with a self-supporting frame according to the invention.
  • the frame consists of a central plate (1) and two outer chassis parts (2, 3), joined together by means of bolted joints, suitably around the entire periphery and, for instance, at the rear-wheel attachments (4), preferably in combination with pedals (5), at the handlebar attachments and at at least two motor attachments, possibly at additional points also.
  • the outer chassis parts (2, 3) are produced by means of compression moulding in one operation, for instance by means of flex-moulding (see above).
  • FIG. 3 shows the reinforcement of the handlebar (7).
  • the front forks are shown at (8) and reinforcement of the handlebar (7) is effected by means of one or more handlebar sections (9), secured to and located inside the outer chassis parts (2, 3).
  • the central plate (1) extends past and in front of the handlebar (7). The increased rigidity obtained with this arrangement is considerable.
  • the rear-wheel fork (14) according to Figure 4 is connected to the outer chassis parts (2, 3), which are in turn connected to the central plate (1).
  • the engine can be attached to or on an engine ledge (13) and a tank ledge (11), with extension (12), is connected close to the handlebar (7) and connected both to the central plate (1) and the parts (2, 3).
  • Figure 5 is a view in perspective of the front-wheel forks (8) and central plate (1) with adjacent parts.
  • Figure 3 is a section along the line A-A in Figure 5
  • Figure 4 is a section along the line B-B in Figure 5.
  • the tank ledge (11) and its attachment is also shown in Figure 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)

Abstract

The invention relates to a moped, motor-cycle or similar vehicle with a self-supporting frame consisting of three or more parts, a longitudinal, central plate (1) and two outer chassis parts (2, 3) which three parts are joined together. According to the invention the central plate (1) continues past and in front of the vehicle's handlebar (7). The handlebar (7) is braced also laterally, in front of the outer chassis parts (2, 3), against said parts by means of at least one handlebar section (9) or brace. The rear-wheel fork (14) of the vehicle is also secured in the outer chassis parts (2, 3), which are in turn connected to the central plate (1).

Description

Moped with self-supporting frame
Technical field:
The present invention relates to a moped, motor-cycle or similar vehicle with a self-supporting frame consisting of at least three parts, a longitudinal, central plate and two outer chassis parts, which three parts are joined together.
Background art:
Traditionally mopeds, motor-cycles or similar vehicles are manufactured with a tubular frame to which the motor and other parts, suspension, steering and some plastic covers, are screwed. The tubular frame is the load- bearing element. In principle the same old method is used as in the olden days in automobile manufacturing in USA, for instance, i.e. a separate frame to which the chassis is bolted, or as in the manufacture of boats, with a plurality of ribs covered with shell plating. A vehicle manufactured in this way becomes expensive at today's level of costs.
In view of the plans to raise the maximum speed permitted for mopeds to that permitted in EU countries, an increase is expected in the number of such vehicles and also in the demands on mopeds and motor-cycles. Mopeds, for instance, are expected to gain competitively in relation to automobiles.
One problem with such vehicles is that the lateral rigidity is often low, and may result in wobbling or loss of control.
Summary of the invention:
The invention aims at a solution to these and other similar problems and is characterised in that the central plate continues past and in front of a handlebar pertaining to the vehicle, and that the handlebar is braced also laterally, inside the outer chassis parts, against said parts by means of at least one handlebar section or brace, and that the rear-wheel fork of the vehicle is also secured in the outer chassis parts, which are in turn connected at the rear to the central plate. A moped or motor-cycle provided with such a self-supporting frame requires few parts, has suitable torsional rigidity, suitable section modulus and, not least, an attractive appearance, as well as being inexpensive to manufacture and of high quality.
The entire sides (outer chassis parts), from the front lamp to the rear light, are moulded in one piece. The central plate contains motor, suspension, steering, etc., but is not itself self-supporting although together with the outer chassis parts it forms a self-supporting frame construction supporting the other parts of the moped. The vehicle is provided at the handlebar with one or two handlebar sections or braces, located inside the outer chassis parts and is connected to these, thereby giving the vehicle considerably increased rigidity. The rear- wheel fork is secured in the outer chassis parts, which in turn are connected at the rear to the central plate. This further increases rigidity, for instance between the rear and front parts of the vehicle, giving considerably increased safety.
In a preferred embodiment of the invention, the vehicle is provided with a tank ledge, connected both to the central plate and the outer chassis parts - another measure that increases safety.
The three frame parts (out chassis parts and central plate) are bolted together around the entire periphery. The three parts are also held together at, for instance, the motor attachments, pedals and suspension attachments.
The outer chassis parts are manufactured by means of compression moulding in one operation, for instance by means of flex-moulding, i.e. in a press having one fixed tool half and one flexible tool half, comprising a rubber half and a rubber membrane against which hydraulic pressure is applied. Pressures of up to 20000 psi are possible.
The tool parts in the press may be made of wood, plastic, "kirksite", aluminium, etc. and are easy to manufacture and to replace. An inexpensive prototype series is easily obtained. Brief description of the drawings:
Figure 1 shows a moped with a frame according to the invention, seen from the side, and Figure 2 the same moped, seen from above. Figure 3 shows the reinforcement of the handlebar according to the invention, and Figure 4 the attachment of the rear-wheel fork. Figure 5 shows part of the vehicle in perspective.
Preferred embodiment:
Figures 1-2 illustrate a moped with a self-supporting frame according to the invention. The frame consists of a central plate (1) and two outer chassis parts (2, 3), joined together by means of bolted joints, suitably around the entire periphery and, for instance, at the rear-wheel attachments (4), preferably in combination with pedals (5), at the handlebar attachments and at at least two motor attachments, possibly at additional points also.
The outer chassis parts (2, 3) are produced by means of compression moulding in one operation, for instance by means of flex-moulding (see above).
Figure 3 shows the reinforcement of the handlebar (7). The front forks are shown at (8) and reinforcement of the handlebar (7) is effected by means of one or more handlebar sections (9), secured to and located inside the outer chassis parts (2, 3). The central plate (1) extends past and in front of the handlebar (7). The increased rigidity obtained with this arrangement is considerable.
The rear-wheel fork (14) according to Figure 4 is connected to the outer chassis parts (2, 3), which are in turn connected to the central plate (1).
This is a further reinforcing measure. The engine can be attached to or on an engine ledge (13) and a tank ledge (11), with extension (12), is connected close to the handlebar (7) and connected both to the central plate (1) and the parts (2, 3).
Figure 5 is a view in perspective of the front-wheel forks (8) and central plate (1) with adjacent parts. Figure 3 is a section along the line A-A in Figure 5, and Figure 4 is a section along the line B-B in Figure 5. The tank ledge (11) and its attachment is also shown in Figure 5.
The arrangement described above can be varied in many ways within the scope of the following claims, such as by the use of riveted joints instead of bolted joints.

Claims

C L A I M S
1. A moped, motor-cycle or similar vehicle with a self-supporting frame consisting of at least three parts, a longitudinal, central plate (1) and two outer chassis parts (2, 3), which three parts are joined together, characterised in that the central plate (1) continues past and in front of a handlebar (7) pertaining to the vehicle, and that the handlebar (7) is braced also laterally, inside the outer chassis parts (2, 3), against said parts by means of a handlebar section (9) or brace, and that the rear- wheel fork (14) of the vehicle is also secured in the outer chassis parts (2, 3), which are in turn connected to the central plate (1).
2. A moped, etc. as claimed in claim 1, characterised in that the outer chassis parts (2, 3), as well as the handlebar section(s) (9) are connected to the central plate (1), by means of bolts, for instance.
3. A moped as claimed in claims 1-2, characterised in that the moped, etc. is provided with a tank ledge (11), connected both to the central plate (1) and the outer chassis parts (2, 3).
EP94919923A 1993-06-17 1994-06-13 Moped with self-supporting frame Ceased EP0702640A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9302094A SE503115C2 (en) 1992-10-13 1993-06-17 Self-supporting frame for moped or similar vehicle
SE9302094 1993-06-17
PCT/SE1994/000570 WO1995000385A1 (en) 1993-06-17 1994-06-13 Moped with self-supporting frame

Publications (1)

Publication Number Publication Date
EP0702640A1 true EP0702640A1 (en) 1996-03-27

Family

ID=20390319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94919923A Ceased EP0702640A1 (en) 1993-06-17 1994-06-13 Moped with self-supporting frame

Country Status (3)

Country Link
EP (1) EP0702640A1 (en)
JP (1) JPH08511493A (en)
WO (1) WO1995000385A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1479738A (en) * 1920-07-20 1924-01-01 Pullin Cyril George Velocipede frame
US1430938A (en) * 1922-05-03 1922-10-03 Calvignac Germain Pressed-steel frame for motor cycles and like vehicles
DE413322C (en) * 1923-02-07 1925-05-08 Ernst Jaenisch Motor vehicle, in particular motorcycle, in which the engine and accessories are enclosed in a housing made of two flange-connected shells that is divided in a vertical plane
FR638953A (en) * 1926-12-29 1928-06-08 Motorcycle
US2827306A (en) * 1955-03-08 1958-03-18 Nsu Werke Ag Frames for motor-bicycles and the like

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9500385A1 *

Also Published As

Publication number Publication date
JPH08511493A (en) 1996-12-03
WO1995000385A1 (en) 1995-01-05

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