GB2048177A - Improved vehicle frame - Google Patents
Improved vehicle frame Download PDFInfo
- Publication number
- GB2048177A GB2048177A GB7913693A GB7913693A GB2048177A GB 2048177 A GB2048177 A GB 2048177A GB 7913693 A GB7913693 A GB 7913693A GB 7913693 A GB7913693 A GB 7913693A GB 2048177 A GB2048177 A GB 2048177A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transverse frame
- frame member
- frame
- members
- wheels
- 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.)
- Granted
Links
- 238000005452 bending Methods 0.000 claims abstract description 6
- 239000000725 suspension Substances 0.000 claims abstract description 3
- 239000007787 solid Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/18—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17
- B62D21/183—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17 specially adapted for sports vehicles, e.g. race, dune buggies, go-karts
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Arrangement Of Transmissions (AREA)
Abstract
A frame for a kart, which by definition does not have an elastic or hinged suspension device, is provided with a configuration which supports the rear wheels (2) in bending and torsional modes. This is achieved by providing frame members (14) extending between transverse frame members (13) and (6) and bending outwardly at (16) to carry bearing supports (18) for the rear axles. Flexing of these frame members is accommodated by universal joints (28). <IMAGE>
Description
SPECIFiCATION
Improved vehicle frame
This invention relates to frames for vehicles, and especially for the simple type of motor vehicle known as a kart.
A kart is defined by limitations in an equipment specification published by the International
Karting Commission which controls the sport of karting. The definition is mainly by dimension of the vehicle itself and its wheels. One other restriction placed is that any suspension device,
either elastic or hinged, is prohibited.
According to the present invention, there is
provided a frame for a vehicle having front and
rear wheels, and an engine driving the rear
wheels, the frame comprising a forward transverse frame member, generally longitudinal frame
members extending rearwardly from the forward
transverse frame member to an intermediate
transverse frame'member, a subsidiary transverse frame member extending between the longitudinal
frame members at a location between the forward
and intermediate transverse frame member, and a
longitudinal connection between the intermediate transverse frame member and a rear transverse f.rame member, the frame also including a pair of
generally longitudinally extending rear wheel
supporting members extending rearwardly from
the subsidiary transverse frame member below
the intermediate transverse frame member and terminating at the rear transverse frame member, 'and laterally outwardly between the intermediate
and rear transverse frame members to bearing
supports for the rear wheels.
In order to accommodate movement of the
wheels relative to the frame consequent upon
flexing of the wheel supporting members, the rear
axles may include universal joints between a
central drive member mounted on the longitudinal
connection and the bearing supports.
The invention will be further described with
reference to the accompanying drawing, of which
the single figure is a plan view of a preferred form
of frame for a kart, with wheels and some other
components also shown.
The drawing shows the frame of a kart
supported on steerable front wheels 1 and driven
rear wheels 2. The frame consists of a forward
transverse frame element 3, a pair of generally
longitudinal frame members 4 extending
rearwardly from the frame element 3 as far-as an
intermediate transverse frame member 5. Near
the forward end, the longitudinal frame members
are supported by the front wheels 1. The
intermediate transverse frame member 5 is
somewhat forward of the rear wheels 2, and
between this frame member 5 and the front
wheels 1, there is also provided a subsidiary
transverse frame member 6. Between the
transverse frame members 5 and 6, there is
mounted an engine and gear box assembly,
generally indicated by 7 and a driver's seat (not
shown). A steering shaft is indicated at 8, and a
gear shift linkage at 9.
To the rear of the intermediate transverse frame member 5, there extends a pair of connecting frame members 11 which extend longitudinally of the vehicle and close to its centre line 12 as far as a rear frame assembly 13. Between the rear frame assembly 1 3 and the subsidiary transverse frame member 6, there extend a pair of wheel supporting frame members 14, each of which has a forward generally longitudinally extending portion 15, and an outwardly bent portion 1 6 and an inwardly inclined and rearmost portion 1 7. Between the portion 1 6 and 17, there is mounted a support 18 for a bearing 19 for a half shaft 21 carrying one of the wheels 2.
Drive from the engine and gear box assembly 7 is taken by a chain drive 22 to a sprocket 23 on a transversely extending shaft 24 which terminates adjacent the centre line 12 of the vehicle in a spur gear 25 meshing with a similar spur 26 mounted on a shaft supported in bearings 27 on the frame members 11. The shaft also is connected by universal joints 28 to the half shafts 21.
It is conventional in karts for the final chain drive to be taken to a solid back axle, and the particular configuration as described is adopted because of the possibility of flexing of the wheel supporting members 14 leading to movement of the wheels 2 relative to the portions of the frame supporting the engine. Accordingly, the back axle is provided with the universal joints 28 and drive has to be taken to a point between the universal joints which is solid with the frame at 11.
It will be seen that the frame is supported on the rear wheels 2 by means of the support members 14, and by virtue of the configuration of these members, some flexibility is imparted to this support although the members 14 would appear to be neither elastic or pivoted. The sections 1 5 of the members 14 resist this movement in a torsional mode, and the portions 1 6 in bending and the portions 1 7 in combined bending and torsion.
Various modifications may be made within the scope of the invention.
1. A frame for a vehicle having front and rear wheels, and an engine driving the rear wheels, the frame comprising a forward transverse frame member, generally longitudinal frame members extending rearwardly from the forward transverse frame member to an intermediate transverse frame member, a subsidiary transverse frame member extending between the longitudinal frame members at a location between the forward and intermediate transverse frame members, and a longitudinal connection between the intermediate transverse frame member and a rear transverse frame member, the frame also including a pair of generally longitudinally extending rear wheel supporting members extending rearwardly from the subsidiary transverse frame member below the intermediate transverse frame member and terminating at the rear transverse frame member, and laterally outwardly between the intermediate
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (6)
1. A frame for a vehicle having front and rear wheels, and an engine driving the rear wheels, the frame comprising a forward transverse frame member, generally longitudinal frame members extending rearwardly from the forward transverse frame member to an intermediate transverse frame member, a subsidiary transverse frame member extending between the longitudinal frame members at a location between the forward and intermediate transverse frame members, and a longitudinal connection between the intermediate transverse frame member and a rear transverse frame member, the frame also including a pair of generally longitudinally extending rear wheel supporting members extending rearwardly from the subsidiary transverse frame member below the intermediate transverse frame member and terminating at the rear transverse frame member, and laterally outwardly between the intermediate and rear transverse frame members to bearing supports for the rear wheels.
2. A vehicle having front and rear wheels, an engine driving the rear wheels and a frame, in which the frame comprises a forwardly transverse frame member, generally longitudinal frame members extending rearwardly from the forward transverse frame member to an intermediate transverse frame member, a subsidiary transverse frame member extending between the longitudinal frame members at a location between the forward and intermediate transverse frame members, and a longitudinal connection between the intermediate transverse frame member and a rear transverse frame member, the frame also including a pair of generally longitudinally extending rear wheel supporting members extending rearwardly from the subsidiary transverse frame member below the intermediate transverse frame member and terminating at the rear transverse frame member, and laterally outwardly between the intermediate and rear transverse frame members to bearing supports for the rear wheels.
3. A vehicle as claimed in claim 2, in which the rear wheels are supported on axles connected to universal joints between a central drive member mounted on the longitudinal connection and the bearing supports.
4. A vehicle as claimed in claim 1 or 2, in which the engine, and gearbox, are mourited between the intermediate and subsidiary transverse frame members.
5. A vehicle as claimed in claims 3 and 4, in which the drive from the engine is transmitted by a chain drive to a transversely extending shaft and thence by a gear drive to a shaft driving the universal joints.
6. A vehicle or vehicle frame substantially as hereinbefore described with reference to the accompanying drawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7913693A GB2048177B (en) | 1979-04-19 | 1979-04-19 | Vehicle frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB7913693A GB2048177B (en) | 1979-04-19 | 1979-04-19 | Vehicle frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2048177A true GB2048177A (en) | 1980-12-10 |
| GB2048177B GB2048177B (en) | 1983-02-16 |
Family
ID=10504656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7913693A Expired GB2048177B (en) | 1979-04-19 | 1979-04-19 | Vehicle frame |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2048177B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988006996A1 (en) * | 1987-03-12 | 1988-09-22 | Frost Magnus R | Flexible understructure for vehicles |
| GB2221434A (en) * | 1988-08-04 | 1990-02-07 | Terence Sydney Harrison | Drive axle assembly |
| WO1991004184A1 (en) * | 1989-09-21 | 1991-04-04 | Derviller Peter R J | A vehicle construction |
| FR2661646A1 (en) * | 1990-05-02 | 1991-11-08 | Savard Franck | Cart with central engine, and chassis with multiple settings |
| GB2300839A (en) * | 1995-05-15 | 1996-11-20 | John Barry Ellis Wheeler | A racing kart chassis with variable torsional stiffness and adjustable seating position |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104477242A (en) * | 2014-12-13 | 2015-04-01 | 广西科技大学 | Car frame of formula car |
-
1979
- 1979-04-19 GB GB7913693A patent/GB2048177B/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1988006996A1 (en) * | 1987-03-12 | 1988-09-22 | Frost Magnus R | Flexible understructure for vehicles |
| GB2221434A (en) * | 1988-08-04 | 1990-02-07 | Terence Sydney Harrison | Drive axle assembly |
| GB2221434B (en) * | 1988-08-04 | 1992-05-27 | Terence Sydney Harrison | Improvements relating to drive axle assemblies |
| WO1991004184A1 (en) * | 1989-09-21 | 1991-04-04 | Derviller Peter R J | A vehicle construction |
| FR2661646A1 (en) * | 1990-05-02 | 1991-11-08 | Savard Franck | Cart with central engine, and chassis with multiple settings |
| GB2300839A (en) * | 1995-05-15 | 1996-11-20 | John Barry Ellis Wheeler | A racing kart chassis with variable torsional stiffness and adjustable seating position |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2048177B (en) | 1983-02-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |