GB2030677A - A bumper for vehicles, more particularly passenger cars - Google Patents
A bumper for vehicles, more particularly passenger cars Download PDFInfo
- Publication number
- GB2030677A GB2030677A GB7928734A GB7928734A GB2030677A GB 2030677 A GB2030677 A GB 2030677A GB 7928734 A GB7928734 A GB 7928734A GB 7928734 A GB7928734 A GB 7928734A GB 2030677 A GB2030677 A GB 2030677A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cover
- bumper
- support member
- overrider
- impact
- 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
- 230000001154 acute effect Effects 0.000 claims description 5
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/44—Bumper guards
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
A bumper has a support element (9) mounted on energy absorbing elements (17) and a resilient cover (8) which conceals the support member. In the event of an angular impact (arrow A) on the bumper, the impact force is transferred to the support member via the cover, whilst in the event of an impact normal to the bumper (arrow B), the impact force is transferred via an overrider (11) in contact with the support member in order to reduce force peaks on the mounting of the cover. <IMAGE>
Description
SPECIFICATION
A bumper for vehicles, more particularly passenger cars
The invention relates to a bumper for vehicles, more particularly passenger cars, with a formstable support element mounted on energy absorbing elements and a resilient cover which conceals the support member and is mounted on the vehicle superstructure.
In a known bumper of the kind referred to above (German Offenlegungsschrift 23 30 494) the cover is constructed as a complete end unit of the superstructure and is mounted along a portion of the superstructure extending transversely to the longitudinal axis of the vehicle. The cover is resilient but, in order to remain form-stable, must have a defined thickness. If such a cover is stressed in a direction longitudinally of the vehicle, high force peaks are built up around the portion on which the cover is attached to the superstructure and these force peaks lead to deformation of the superstructure. It is the object of the invention to provide a bumper which is constructed so that the above-described disadvantages are avoided.
According to the invention there is provided a bumper for vehicles, more particular passenger cars, with a form-stable support element mounted on energy absorbing elements and a resilient cover which concea Is said support member and is mounted on the superstructure, wherein in the event of an angular impact on the bumper, the impact force is transferred to the support member via the cover whilst in the event of an impact normal to the bumper, the impact force is transferred via an overrider associated with the support member in order to reduce force peaks on the mounting of the cover. Preferably, in the region of the overrider the cover is provided with a recess of which one wall extends between the overrider and the support member and an opening is provided in the other wall which surrounds the overrider in shell configuration transversely of the vehicle.In the region of the cover at which the angular impact occurs, the cover is preferably provided with a local thickened portion which extends to a portion of the support member. This portion is preferably of 'U'-shaped cross-section. The plan view of the external shape of the cover may be defined by auxiliary lines of which a first line extends normal to the longitudinal direction, of the vehicle and a second line extends at an acute angle to the first line and against the vehicle. Furthermore, the acute angle is preferably 300.
The special advantages of the invention are that, as a result of the construction of the cover and by virtue of the provision of the overrider, the impact forces (angular and longitudinal of the vehicle) are absorbed and distributed so that deformation of the superstructure, orto the superstructure sides of the cover, is avoided.
In the accompanying drawings:- Fig. 1 is a perspective view of the rear portion, of a motor vehicle with a bumper according to the invention.
Fig. 2 is a section taken along the line 11-11 of Fig. 1 shown to an enlarged scale.
Fig. 3 is a part view similar to a portion of Fig.
2, but showing another embodiment.
Fig. 4 is a section taken along the line 1 V-1V of Fig. 1 shown to a largerscale.
Fig. 1 shows a passenger car 1 provided with
wheels 2, 3 and a superstructure 4 having windows 5 and a hatch flap 6. The superstructure
of body 4 is provided with a bumper 7 comprising
a cover 8 of resilient material such as polyurethane
foam and a form stable support member 9 of
metal, plastics or the like. The cross-section of the
support member 9 may be of U-shaped
configuration. The cover 8 is provided with 3
recess 10 for receiving overriders 11, 12 and a
number plate, not shown.
The cover 8 which, although resilient, has a
defined stiffness is mounted on the superstructure
or body 4 along a parting line 13 by means of
threaded retaining elements 14 which are,
conveniently, bolts. The bolts co-operate with an
angled portion 1 5 of the cover 8 and with a flange
16 of the superstructure 4 (Fig. 4).
According to Fig. 2 impact directed at an angle
in the direction indicated by arrow A is transferred
via the cover 8 to the support member 9 which is
mounted on the superstructure by means of
hydraulic dampers 17. The forces resulting from a
perpendicular impact, indicated by arrow B, are
however transferred to the support member 9 via the overrider 11.
The cover 8 has an open portion 19 in the
region of the overrider 11 which is mounted on the support member 9 by means of a threaded
retaining element 18. It is also possible for one
wall of the cover 8 to extend between the support
member 9 and the overrider 11 and an opening 22
is provided in another wall 21 which surrounds the overrider 11 in shell configuration in the transverse direction C-C of the vehicle.
Furthermore, in the region in which the angular impact A is received, the cover 8 is also provided with local thickening 23 which extends to a portion 24 of the support member 9. The portion 24 is formed by a section 25 which is of 'U'shaped cross-section and mounted on the support member 9. To ensure correct transference of force into the bumper 7, the plan view of the external shape of the cover 8 is defined by auxiliary lines 26, 27. The line 26 extends normal to the longitudinal direction of the vehicle D-D and the line 27 extends at an acute angle a to the line 26 and against the passenger car 1. Advantageously, the angle a is 300.
If the bumper 7 is stressed by the angular impact A, the forces are transferred via the cover 8 to the support member 9 and are absorbed by the damper 17. An angular impact A causes the resultant forces to be distributed so that tolerable loads, which do not cause deformation, are applied to the mounting of the cover 8 (along the line 13).
In the event of a longitudinally directed impact
D as shown in Fig 2, the overrider 11 is displaced to the plane E and similarly the support member 9 is thus displaced. Energy is absorbed by the damper 17 but the cover 8 and its mounting are not stressed. The cover 8 is stressed only when displacement beyond the plane E is exceeded.
However, the stresses will be of such magnitude that no deformation occurs on the superstructureside mounting of the cover 8.
The embodiment according to Fig. 4 operates in a similar manner. As soon as the overrider 11 is displaced as far as the plane E, the opening 22 increases as indicated by the line 28 without the cover 8 being excessively stressed.
Claims (8)
1. A bumperforvehicles, more particular
passenger cars, with a form-stable support
element mounted on energy absorbing elements
and a re'silient cover which conceals said support
member and is mounted on the superstructure,
wherein in the event of an angular impact on the
bumper, the impact force is transferred to the
support member via the cover, whilst in the event
of an impact normal to the bumper, the impact
force is transferred via an overrider associated
with the support member in order to reduce force
peaks on the mounting of the cover.
2. A bumper according to claim 1, wherein the cover is cut free in the region of the overrider.
3. A bumper according to the claim 1 ,wherein the cover is provided with a recess in the region of the overrider of which one wall extends between the overrider and the support member and an opening is provided in another wall which surrounds the overrider in shell configuration transversely of the vehicle.
4. A bumper according to claim 1 ,wherein in the region of the cover at which the angular impact occurs the cover is provided with a local thickened portion which extends to a portion of the support member.
5. A bumper according to claim 4, wherein said portion of the support member is of 'U'-shaped cross-section.
6. A bumper according to claim 1, wherein the outer shape of the cover as seen in plan view is defined by auxiliary lines of which a first line extends normal to the longitudinal direction of the vehicle and a second line extends at an acute angle (a) with respect to the first line and against the vehicle.
7. A bumper according to claim 6, wherein the acute angle (a) is approximateiy 300.
8. A bumper for vehicles substantially as described with reference to, and as illustrated in, the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2838572A DE2838572C2 (en) | 1978-09-05 | 1978-09-05 | Bumper devices for vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2030677A true GB2030677A (en) | 1980-04-10 |
| GB2030677B GB2030677B (en) | 1982-10-27 |
Family
ID=6048664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7928734A Expired GB2030677B (en) | 1978-09-05 | 1979-08-17 | Bumper for vehicles more particularly passenger cars |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2838572C2 (en) |
| FR (1) | FR2435375B1 (en) |
| GB (1) | GB2030677B (en) |
| IT (1) | IT1165280B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3039365A1 (en) * | 1980-10-18 | 1982-05-19 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | BUMPER FOR A MOTOR VEHICLE, ESPECIALLY A PASSENGER CAR |
| DE3622483A1 (en) * | 1986-07-04 | 1988-01-07 | Porsche Ag | BUMPER FOR VEHICLES |
| DE4201839C2 (en) * | 1992-01-24 | 1998-09-17 | Porsche Ag | Bumpers for vehicles, in particular motor vehicles |
| DE10107287A1 (en) | 2001-02-16 | 2002-09-12 | Porsche Ag | Bumper system for a vehicle |
| DE102005033074B4 (en) * | 2005-07-15 | 2014-08-28 | Audi Ag | Rear bumper for a motor vehicle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB559193A (en) * | 1942-11-30 | 1944-02-08 | Austin Motor Co Ltd | Improvements in bumper bars for vehicles |
| GB674971A (en) * | 1949-07-08 | 1952-07-02 | Rolls Royce | Improvements in or relating to bumpers for motor vehicles |
| GB1422636A (en) * | 1972-06-29 | 1976-01-28 | Triumph Motor Co Ltd | Energy absorbing bumper assembly for vehicles |
| DE2330494C2 (en) * | 1973-06-15 | 1982-06-16 | Adam Opel AG, 6090 Rüsselsheim | Bumpers for automobiles |
| US3866963A (en) * | 1973-08-13 | 1975-02-18 | Mccord Corp | Energy absorbing bumper assembly |
| GB1445293A (en) * | 1974-04-06 | 1976-08-11 | British Leyland Uk Ltd | Energy absorbing bumper assembly |
| US4061384A (en) * | 1976-04-29 | 1977-12-06 | General Motors Corporation | Bumper having pivotal load spreader plate for deflecting energy absorbing medium |
-
1978
- 1978-09-05 DE DE2838572A patent/DE2838572C2/en not_active Expired
-
1979
- 1979-07-31 IT IT24827/79A patent/IT1165280B/en active
- 1979-08-17 GB GB7928734A patent/GB2030677B/en not_active Expired
- 1979-09-05 FR FR7922170A patent/FR2435375B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2030677B (en) | 1982-10-27 |
| DE2838572A1 (en) | 1980-03-13 |
| FR2435375B1 (en) | 1986-05-16 |
| FR2435375A1 (en) | 1980-04-04 |
| DE2838572C2 (en) | 1986-05-07 |
| IT1165280B (en) | 1987-04-22 |
| IT7924827A0 (en) | 1979-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 746 | Register noted 'licences of right' (sect. 46/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |